🎨 use Clang-Format

.clang-format

@@ -1,4 +1,3 @@
-#AccessModifierOffset: 2
 AlignAfterOpenBracket: Align
 AlignConsecutiveAssignments: false
 #AlignConsecutiveBitFields: false
@@ -12,7 +11,7 @@ AllowAllConstructorInitializersOnNextLine: false
 AllowAllParametersOfDeclarationOnNextLine: false
 AllowShortBlocksOnASingleLine: Empty
 AllowShortCaseLabelsOnASingleLine: false
-#AllowShortEnumsOnASingleLine: true
+AllowShortEnumsOnASingleLine: true
 AllowShortFunctionsOnASingleLine: Empty
 AllowShortIfStatementsOnASingleLine: Never
 AllowShortLambdasOnASingleLine: Empty
@@ -30,27 +29,26 @@ BraceWrapping:
   AfterControlStatement: Always
   AfterEnum: true
   AfterFunction: true
-  AfterNamespace: false
+  AfterNamespace: true
   AfterStruct: true
   AfterUnion: true
   AfterExternBlock: false
   BeforeCatch: true
   BeforeElse: true
-  #BeforeLambdaBody: false
+  BeforeLambdaBody: false
-  #BeforeWhile: false
+  BeforeWhile: false
   SplitEmptyFunction: false
   SplitEmptyRecord: false
   SplitEmptyNamespace: false
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializers: BeforeComma
 BreakStringLiterals: false
-ColumnLimit: 0
+ColumnLimit: 160
 CompactNamespaces: false
 ConstructorInitializerIndentWidth: 2
-Cpp11BracedListStyle: true
+Cpp11BracedListStyle: false
 PointerAlignment: Left
 FixNamespaceComments: true
-IncludeBlocks: Preserve
 #IndentCaseBlocks: false
 IndentCaseLabels: true
 IndentGotoLabels: false
@@ -60,7 +58,6 @@ KeepEmptyLinesAtTheStartOfBlocks: false
 MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
 ReflowComments: false
-SortIncludes: true
 SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
 SpaceAfterLogicalNot: false
@@ -79,6 +76,22 @@ SpacesInConditionalStatement: false
 SpacesInContainerLiterals: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard: c++11
+Standard: Latest
 TabWidth: 4
 UseTab: Never
+
+# what to do with include blocks
+SortIncludes: true
+IncludeBlocks: Preserve
+IncludeCategories:
+  - Regex:           '^".*"'
+    Priority:        1
+  - Regex:           '<[^\/]+>'
+    Priority:        2
+  - Regex:           '^<(nlohmann)\/-*'
+    Priority:        3
+  - Regex:           '.*'
+    Priority:        4
+
+Macros:
+  - JSON_PRIVATE_UNLESS_TESTED=private

.github/CONTRIBUTING.md

@@ -50,7 +50,7 @@ To make changes, you need to edit the following files:
 ## Note
 
 - If you open a pull request, the code will be automatically tested with [Valgrind](http://valgrind.org)'s Memcheck tool to detect memory leaks. Please be aware that the execution with Valgrind _may_ in rare cases yield different behavior than running the code directly. This can result in failing unit tests which run successfully without Valgrind.
-- There is a Makefile target `make pretty` which runs [Artistic Style](http://astyle.sourceforge.net) to fix indentation. If possible, run it before opening the pull request. Otherwise, we shall run it afterward.
+- There is a Makefile target `make pretty` which runs [Clang-Format](https://clang.llvm.org/docs/ClangFormat.html) to fix indentation. If possible, run it before opening the pull request. Otherwise, we shall run it afterward.
 
 ## Please don't
 

.github/workflows/check_amalgamation.yml

@@ -21,15 +21,9 @@ jobs:
 
   check:
     runs-on: ubuntu-latest
+    container: silkeh/clang:dev
     env:
       MAIN_DIR: ${{ github.workspace }}/main
-      INCLUDE_DIR: ${{ github.workspace }}/main/single_include/nlohmann
-      TOOL_DIR: ${{ github.workspace }}/tools/tools/amalgamate
-      ASTYLE_FLAGS: >
-        --style=allman --indent=spaces=4 --indent-modifiers --indent-switches --indent-preproc-block
-        --indent-preproc-define --indent-col1-comments --pad-oper --pad-header --align-pointer=type
-        --align-reference=type --add-brackets --convert-tabs --close-templates --lineend=linux --preserve-date
-        --formatted
 
     steps:
       - name: Checkout pull request
@@ -44,27 +38,7 @@ jobs:
           path: tools
           ref: develop
 
-      - name: Install astyle
-        run: |
-          sudo apt-get update
-          sudo apt-get install astyle
-
       - name: Check amalgamation
         run: |
           cd $MAIN_DIR
-
+          make check-amalgamation
-          rm -fr $INCLUDE_DIR/json.hpp~ $INCLUDE_DIR/json_fwd.hpp~
-          cp $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json.hpp~
-          cp $INCLUDE_DIR/json_fwd.hpp $INCLUDE_DIR/json_fwd.hpp~
-
-          python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json.json -s .
-          python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json_fwd.json -s .
-          echo "Format (1)"
-          astyle $ASTYLE_FLAGS --suffix=none --quiet $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json_fwd.hpp
-
-          diff $INCLUDE_DIR/json.hpp~ $INCLUDE_DIR/json.hpp
-          diff $INCLUDE_DIR/json_fwd.hpp~ $INCLUDE_DIR/json_fwd.hpp
-
-          astyle $ASTYLE_FLAGS $(find docs/examples include tests -type f \( -name '*.hpp' -o -name '*.cpp' -o -name '*.cu' \) -not -path 'tests/thirdparty/*' -not -path 'tests/abi/include/nlohmann/*' | sort)
-          echo Check
-          find $MAIN_DIR -name '*.orig' -exec false {} \+

.github/workflows/ubuntu.yml

@@ -46,7 +46,7 @@ jobs:
     container: ghcr.io/nlohmann/json-ci:v2.4.0
     strategy:
       matrix:
-        target: [ci_cppcheck, ci_test_valgrind, ci_test_amalgamation, ci_test_single_header, ci_single_binaries, ci_infer]
+        target: [ci_cppcheck, ci_test_valgrind, ci_test_single_header, ci_single_binaries, ci_infer]
     steps:
       - uses: actions/checkout@v3
       - name: Run CMake
@@ -54,6 +54,18 @@ jobs:
       - name: Build
         run: cmake --build build --target ${{ matrix.target }}
 
+  ci_test_amalgamation:
+    runs-on: ubuntu-latest
+    container: silkeh/clang:dev
+    steps:
+      - uses: actions/checkout@v3
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@v3.27.7
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_amalgamation
+
   ci_static_analysis_ubuntu:
     runs-on: ubuntu-latest
     strategy:

Makefile

@@ -142,33 +142,9 @@ pvs_studio:
 # Code format and source amalgamation
 ##########################################################################
 
-# call the Artistic Style pretty printer on all source files
-pretty:
-	astyle \
-	    --style=allman \
-	    --indent=spaces=4 \
-	    --indent-modifiers \
-	    --indent-switches \
-	    --indent-preproc-block \
-	    --indent-preproc-define \
-	    --indent-col1-comments \
-	    --pad-oper \
-	    --pad-header \
-	    --align-pointer=type \
-	    --align-reference=type \
-	    --add-braces \
-	    --squeeze-lines=2 \
-	    --convert-tabs \
-	    --close-templates \
-	    --lineend=linux \
-	    --preserve-date \
-	    --suffix=none \
-	    --formatted \
-	   $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) docs/examples/*.cpp
-
 # call the Clang-Format on all source files
-pretty_format:
+pretty:
-	for FILE in $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) docs/examples/*.cpp; do echo $$FILE; clang-format -i $$FILE; done
+	clang-format --Werror --verbose -i $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE)
 
 # create single header files and pretty print
 amalgamate: $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE)

README.md

@@ -1774,8 +1774,8 @@ The library itself consists of a single header file licensed under the MIT licen
 - [**amalgamate.py - Amalgamate C source and header files**](https://github.com/edlund/amalgamate) to create a single header file
 - [**American fuzzy lop**](https://lcamtuf.coredump.cx/afl/) for fuzz testing
 - [**AppVeyor**](https://www.appveyor.com) for [continuous integration](https://ci.appveyor.com/project/nlohmann/json) on Windows
-- [**Artistic Style**](http://astyle.sourceforge.net) for automatic source code indentation
 - [**Clang**](https://clang.llvm.org) for compilation with code sanitizers
+- [**Clang-Format**](https://clang.llvm.org/docs/ClangFormat.html) for automatic source code indentation
 - [**CMake**](https://cmake.org) for build automation
 - [**Codacy**](https://www.codacy.com) for further [code analysis](https://www.codacy.com/app/nlohmann/json)
 - [**Coveralls**](https://coveralls.io) to measure [code coverage](https://coveralls.io/github/nlohmann/json)

cmake/ci.cmake

@@ -8,16 +8,16 @@ set(N 10)
 include(FindPython3)
 find_package(Python3 COMPONENTS Interpreter)
 
-find_program(ASTYLE_TOOL NAMES astyle)
-execute_process(COMMAND ${ASTYLE_TOOL} --version OUTPUT_VARIABLE ASTYLE_TOOL_VERSION ERROR_VARIABLE ASTYLE_TOOL_VERSION)
-string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" ASTYLE_TOOL_VERSION "${ASTYLE_TOOL_VERSION}")
-message(STATUS "🔖 Artistic Style ${ASTYLE_TOOL_VERSION} (${ASTYLE_TOOL})")
-
 find_program(CLANG_TOOL NAMES clang++-HEAD clang++ clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11 clang++)
 execute_process(COMMAND ${CLANG_TOOL} --version OUTPUT_VARIABLE CLANG_TOOL_VERSION ERROR_VARIABLE CLANG_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TOOL_VERSION "${CLANG_TOOL_VERSION}")
 message(STATUS "🔖 Clang ${CLANG_TOOL_VERSION} (${CLANG_TOOL})")
 
+find_program(CLANG_FORMAT_TOOL NAMES clang-format)
+execute_process(COMMAND ${CLANG_FORMAT_TOOL} --version OUTPUT_VARIABLE CLANG_FORMAT_TOOL_VERSION ERROR_VARIABLE CLANG_FORMAT_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_FORMAT_TOOL_VERSION "${CLANG_FORMAT_TOOL_VERSION}")
+message(STATUS "🔖 Clang-Format ${CLANG_FORMAT_TOOL_VERSION} (${CLANG_FORMAT_TOOL})")
+
 find_program(CLANG_TIDY_TOOL NAMES clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy)
 execute_process(COMMAND ${CLANG_TIDY_TOOL} --version OUTPUT_VARIABLE CLANG_TIDY_TOOL_VERSION ERROR_VARIABLE CLANG_TIDY_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TIDY_TOOL_VERSION "${CLANG_TIDY_TOOL_VERSION}")
@@ -581,33 +581,8 @@ add_custom_target(ci_test_clang_sanitizer
 # Check if header is amalgamated and sources are properly indented.
 ###############################################################################
 
-set(ASTYLE_FLAGS --style=allman --indent=spaces=4 --indent-modifiers --indent-switches --indent-preproc-block --indent-preproc-define --indent-col1-comments --pad-oper --pad-header --align-pointer=type --align-reference=type --add-brackets --convert-tabs --close-templates --lineend=linux --preserve-date --formatted)
-
-file(GLOB_RECURSE INDENT_FILES
-    ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp
-        ${PROJECT_SOURCE_DIR}/tests/src/*.cpp
-        ${PROJECT_SOURCE_DIR}/tests/src/*.hpp
-        ${PROJECT_SOURCE_DIR}/tests/benchmarks/src/benchmarks.cpp
-    ${PROJECT_SOURCE_DIR}/docs/examples/*.cpp
-)
-
-set(include_dir ${PROJECT_SOURCE_DIR}/single_include/nlohmann)
-set(tool_dir ${PROJECT_SOURCE_DIR}/tools/amalgamate)
 add_custom_target(ci_test_amalgamation
-    COMMAND rm -fr ${include_dir}/json.hpp~ ${include_dir}/json_fwd.hpp~
+    COMMAND make check-amalgamation
-    COMMAND cp ${include_dir}/json.hpp ${include_dir}/json.hpp~
-    COMMAND cp ${include_dir}/json_fwd.hpp ${include_dir}/json_fwd.hpp~
-
-    COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json.json -s .
-    COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json_fwd.json -s .
-    COMMAND ${ASTYLE_TOOL} ${ASTYLE_FLAGS} --suffix=none --quiet ${include_dir}/json.hpp ${include_dir}/json_fwd.hpp
-
-    COMMAND diff ${include_dir}/json.hpp~ ${include_dir}/json.hpp
-    COMMAND diff ${include_dir}/json_fwd.hpp~ ${include_dir}/json_fwd.hpp
-
-    COMMAND ${ASTYLE_TOOL} ${ASTYLE_FLAGS} ${INDENT_FILES}
-    COMMAND for FILE in `find . -name '*.orig'`\; do false \; done
-
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
     COMMENT "Check amalgamation and indentation"
 )

include/nlohmann/adl_serializer.hpp

@@ -24,8 +24,7 @@ struct adl_serializer
     /// @brief convert a JSON value to any value type
     /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
     template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+    static auto from_json(BasicJsonType&& j, TargetType& val) noexcept(noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
-        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
         -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
     {
         ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
@@ -34,18 +33,16 @@ struct adl_serializer
     /// @brief convert a JSON value to any value type
     /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
     template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto from_json(BasicJsonType && j) noexcept(
+    static auto from_json(BasicJsonType&& j) noexcept(noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType>{})))
-    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+        -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType>{}))
-    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
     {
-        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
+        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType>{});
     }
 
     /// @brief convert any value type to a JSON value
     /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
     template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+    static auto to_json(BasicJsonType& j, TargetType&& val) noexcept(noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
-        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
         -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
     {
         ::nlohmann::to_json(j, std::forward<TargetType>(val));

include/nlohmann/detail/abi_macros.hpp

@@ -47,54 +47,40 @@
 #endif
 
 // Construct the namespace ABI tags component
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi ## a ## b
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi##a##b
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) \
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
-    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
 
-#define NLOHMANN_JSON_ABI_TAGS                                       \
+#define NLOHMANN_JSON_ABI_TAGS NLOHMANN_JSON_ABI_TAGS_CONCAT(NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS, NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
-    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
-            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
-            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
 
 // Construct the namespace version component
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) _v##major##_##minor##_##patch
-    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
 
 #if NLOHMANN_JSON_NAMESPACE_NO_VERSION
-#define NLOHMANN_JSON_NAMESPACE_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_VERSION
 #else
-#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    #define NLOHMANN_JSON_NAMESPACE_VERSION                                                                                                                    \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+        NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, NLOHMANN_JSON_VERSION_MINOR, NLOHMANN_JSON_VERSION_PATCH)
-                                           NLOHMANN_JSON_VERSION_MINOR, \
-                                           NLOHMANN_JSON_VERSION_PATCH)
 #endif
 
 // Combine namespace components
-#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a##b
-#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
-    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
 
 #ifndef NLOHMANN_JSON_NAMESPACE
-#define NLOHMANN_JSON_NAMESPACE               \
+    #define NLOHMANN_JSON_NAMESPACE nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT(NLOHMANN_JSON_ABI_TAGS, NLOHMANN_JSON_NAMESPACE_VERSION)
-    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
-            NLOHMANN_JSON_ABI_TAGS,           \
-            NLOHMANN_JSON_NAMESPACE_VERSION)
 #endif
 
 #ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
-#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    #define NLOHMANN_JSON_NAMESPACE_BEGIN                                                                                                                      \
         namespace nlohmann                                                                                                                                     \
         {                                                                                                                                                      \
-    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+        inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT(NLOHMANN_JSON_ABI_TAGS, NLOHMANN_JSON_NAMESPACE_VERSION)                                               \
-                NLOHMANN_JSON_ABI_TAGS,              \
-                NLOHMANN_JSON_NAMESPACE_VERSION)     \
         {
 #endif
 
 #ifndef NLOHMANN_JSON_NAMESPACE_END
-#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    #define NLOHMANN_JSON_NAMESPACE_END                                                                                                                        \
         }  /* namespace (inline namespace) NOLINT(readability/namespace) */                                                                                    \
         }  // namespace nlohmann
 #endif

include/nlohmann/detail/conversions/from_json.hpp

@@ -44,10 +44,9 @@ inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
 }
 
 // overloads for basic_json template parameters
-template < typename BasicJsonType, typename ArithmeticType,
+template<typename BasicJsonType,
-           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+         typename ArithmeticType,
-                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+         enable_if_t<std::is_arithmetic<ArithmeticType>::value && !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value, int> = 0>
-                         int > = 0 >
 void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
 {
     switch (static_cast<value_t>(j))
@@ -100,13 +99,12 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t&
     s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
 }
 
-template <
+template<typename BasicJsonType,
-    typename BasicJsonType, typename StringType,
+         typename StringType,
-    enable_if_t <
+         enable_if_t<std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value &&
-        std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value
+                         is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value &&
-        && is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value
+                         !std::is_same<typename BasicJsonType::string_t, StringType>::value && !is_json_ref<StringType>::value,
-        && !std::is_same<typename BasicJsonType::string_t, StringType>::value
+                     int> = 0>
-        && !is_json_ref<StringType>::value, int > = 0 >
 inline void from_json(const BasicJsonType& j, StringType& s)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
@@ -136,8 +134,7 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_int
 }
 
 #if !JSON_DISABLE_ENUM_SERIALIZATION
-template<typename BasicJsonType, typename EnumType,
+template<typename BasicJsonType, typename EnumType, enable_if_t<std::is_enum<EnumType>::value, int> = 0>
-         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
 inline void from_json(const BasicJsonType& j, EnumType& e)
 {
     typename std::underlying_type<EnumType>::type val;
@@ -147,8 +144,7 @@ inline void from_json(const BasicJsonType& j, EnumType& e)
 #endif  // JSON_DISABLE_ENUM_SERIALIZATION
 
 // forward_list doesn't have an insert method
-template<typename BasicJsonType, typename T, typename Allocator,
+template<typename BasicJsonType, typename T, typename Allocator, enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
-         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
 inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
@@ -156,16 +152,13 @@ inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l
         JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
     }
     l.clear();
-    std::transform(j.rbegin(), j.rend(),
+    std::transform(j.rbegin(), j.rend(), std::front_inserter(l), [](const BasicJsonType& i) {
-                   std::front_inserter(l), [](const BasicJsonType & i)
-    {
         return i.template get<T>();
     });
 }
 
 // valarray doesn't have an insert method
-template<typename BasicJsonType, typename T,
+template<typename BasicJsonType, typename T, enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
-         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
 inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
@@ -173,16 +166,14 @@ inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
         JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
     }
     l.resize(j.size());
-    std::transform(j.begin(), j.end(), std::begin(l),
+    std::transform(j.begin(), j.end(), std::begin(l), [](const BasicJsonType& elem) {
-                   [](const BasicJsonType & elem)
-    {
         return elem.template get<T>();
     });
 }
 
 template<typename BasicJsonType, typename T, std::size_t N>
 auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
--> decltype(j.template get<T>(), void())
+    -> decltype(j.template get<T>(), void())
 {
     for (std::size_t i = 0; i < N; ++i)
     {
@@ -197,9 +188,7 @@ inline void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType:
 }
 
 template<typename BasicJsonType, typename T, std::size_t N>
-auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr, priority_tag<2> /*unused*/) -> decltype(j.template get<T>(), void())
-                          priority_tag<2> /*unused*/)
--> decltype(j.template get<T>(), void())
 {
     for (std::size_t i = 0; i < N; ++i)
     {
@@ -207,23 +196,17 @@ auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
     }
 }
 
-template<typename BasicJsonType, typename ConstructibleArrayType,
+template<typename BasicJsonType,
-         enable_if_t<
+         typename ConstructibleArrayType,
-             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+         enable_if_t<std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value, int> = 0>
-             int> = 0>
 auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
--> decltype(
+    -> decltype(arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()), j.template get<typename ConstructibleArrayType::value_type>(), void())
-    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
-    j.template get<typename ConstructibleArrayType::value_type>(),
-    void())
 {
     using std::end;
 
     ConstructibleArrayType ret;
     ret.reserve(j.size());
-    std::transform(j.begin(), j.end(),
+    std::transform(j.begin(), j.end(), std::inserter(ret, end(ret)), [](const BasicJsonType& i) {
-                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
-    {
         // get<BasicJsonType>() returns *this, this won't call a from_json
         // method when value_type is BasicJsonType
         return i.template get<typename ConstructibleArrayType::value_type>();
@@ -231,20 +214,15 @@ auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, p
     arr = std::move(ret);
 }
 
-template<typename BasicJsonType, typename ConstructibleArrayType,
+template<typename BasicJsonType,
-         enable_if_t<
+         typename ConstructibleArrayType,
-             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+         enable_if_t<std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value, int> = 0>
-             int> = 0>
+inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<0> /*unused*/)
-inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
-                                 priority_tag<0> /*unused*/)
 {
     using std::end;
 
     ConstructibleArrayType ret;
-    std::transform(
+    std::transform(j.begin(), j.end(), std::inserter(ret, end(ret)), [](const BasicJsonType& i) {
-        j.begin(), j.end(), std::inserter(ret, end(ret)),
-        [](const BasicJsonType & i)
-    {
         // get<BasicJsonType>() returns *this, this won't call a from_json
         // method when value_type is BasicJsonType
         return i.template get<typename ConstructibleArrayType::value_type>();
@@ -252,44 +230,41 @@ inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType&
     arr = std::move(ret);
 }
 
-template < typename BasicJsonType, typename ConstructibleArrayType,
+template<typename BasicJsonType,
-           enable_if_t <
+         typename ConstructibleArrayType,
-               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+         enable_if_t<is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value &&
-               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+                         !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value &&
-               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+                         !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value &&
-               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+                         !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value && !is_basic_json<ConstructibleArrayType>::value,
-               !is_basic_json<ConstructibleArrayType>::value,
+                     int> = 0>
-               int > = 0 >
 auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
--> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+    -> decltype(from_json_array_impl(j, arr, priority_tag<3>{}), j.template get<typename ConstructibleArrayType::value_type>(), void())
-j.template get<typename ConstructibleArrayType::value_type>(),
-void())
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
         JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
     }
 
-    from_json_array_impl(j, arr, priority_tag<3> {});
+    from_json_array_impl(j, arr, priority_tag<3>{});
 }
 
-template < typename BasicJsonType, typename T, std::size_t... Idx >
+template<typename BasicJsonType, typename T, std::size_t... Idx>
-std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+std::array<T, sizeof...(Idx)>
-        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
+from_json_inplace_array_impl(BasicJsonType&& j, identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
 {
     return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
 }
 
-template < typename BasicJsonType, typename T, std::size_t N >
+template<typename BasicJsonType, typename T, std::size_t N>
 auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
--> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+    -> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N>{}))
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
         JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
     }
 
-    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N>{});
 }
 
 template<typename BasicJsonType>
@@ -303,7 +278,8 @@ inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t&
     bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
 }
 
-template<typename BasicJsonType, typename ConstructibleObjectType,
+template<typename BasicJsonType,
+         typename ConstructibleObjectType,
          enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
 inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
 {
@@ -315,11 +291,7 @@ inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
     ConstructibleObjectType ret;
     const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
     using value_type = typename ConstructibleObjectType::value_type;
-    std::transform(
+    std::transform(inner_object->begin(), inner_object->end(), std::inserter(ret, ret.begin()), [](typename BasicJsonType::object_t::value_type const& p) {
-        inner_object->begin(), inner_object->end(),
-        std::inserter(ret, ret.begin()),
-        [](typename BasicJsonType::object_t::value_type const & p)
-    {
         return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
     });
     obj = std::move(ret);
@@ -329,14 +301,13 @@ inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
 // (BooleanType, etc..); note: Is it really necessary to provide explicit
 // overloads for boolean_t etc. in case of a custom BooleanType which is not
 // an arithmetic type?
-template < typename BasicJsonType, typename ArithmeticType,
+template<typename BasicJsonType,
-           enable_if_t <
+         typename ArithmeticType,
-               std::is_arithmetic<ArithmeticType>::value&&
+         enable_if_t<std::is_arithmetic<ArithmeticType>::value && !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value &&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value &&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value &&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
                          !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
-               int > = 0 >
+                     int> = 0>
 inline void from_json(const BasicJsonType& j, ArithmeticType& val)
 {
     switch (static_cast<value_t>(j))
@@ -379,46 +350,48 @@ std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<
     return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
 }
 
-template < typename BasicJsonType, class A1, class A2 >
+template<typename BasicJsonType, class A1, class A2>
 std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
 {
-    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
+    return { std::forward<BasicJsonType>(j).at(0).template get<A1>(), std::forward<BasicJsonType>(j).at(1).template get<A2>() };
-            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
 }
 
 template<typename BasicJsonType, typename A1, typename A2>
 inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
 {
-    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>>{}, priority_tag<0>{});
 }
 
 template<typename BasicJsonType, typename... Args>
 std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
 {
-    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...>{});
 }
 
 template<typename BasicJsonType, typename... Args>
 inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
 {
-    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...>{});
 }
 
 template<typename BasicJsonType, typename TupleRelated>
 auto from_json(BasicJsonType&& j, TupleRelated&& t)
--> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+    -> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3>{}))
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
     {
         JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
     }
 
-    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3>{});
 }
 
-template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+template<typename BasicJsonType,
-           typename = enable_if_t < !std::is_constructible <
+         typename Key,
-                                        typename BasicJsonType::string_t, Key >::value >>
+         typename Value,
+         typename Compare,
+         typename Allocator,
+         typename = enable_if_t<!std::is_constructible<typename BasicJsonType::string_t, Key>::value>>
 inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
@@ -436,9 +409,13 @@ inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allo
     }
 }
 
-template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+template<typename BasicJsonType,
-           typename = enable_if_t < !std::is_constructible <
+         typename Key,
-                                        typename BasicJsonType::string_t, Key >::value >>
+         typename Value,
+         typename Hash,
+         typename KeyEqual,
+         typename Allocator,
+         typename = enable_if_t<!std::is_constructible<typename BasicJsonType::string_t, Key>::value>>
 inline void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
 {
     if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
@@ -471,8 +448,7 @@ inline void from_json(const BasicJsonType& j, std_fs::path& p)
 struct from_json_fn
 {
     template<typename BasicJsonType, typename T>
-    auto operator()(const BasicJsonType& j, T&& val) const
+    auto operator()(const BasicJsonType& j, T&& val) const noexcept(noexcept(from_json(j, std::forward<T>(val))))
-    noexcept(noexcept(from_json(j, std::forward<T>(val))))
         -> decltype(from_json(j, std::forward<T>(val)))
     {
         return from_json(j, std::forward<T>(val));

include/nlohmann/detail/conversions/to_chars.hpp

@@ -61,7 +61,10 @@ struct diyfp // f * 2^e
     std::uint64_t f = 0;
     int e = 0;
 
-    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept
+      : f(f_)
+      , e(e_)
+    {}
 
     /*!
     @brief returns x - y
@@ -72,7 +75,7 @@ struct diyfp // f * 2^e
         JSON_ASSERT(x.e == y.e);
         JSON_ASSERT(x.f >= y.f);
 
-        return {x.f - y.f, x.e};
+        return { x.f - y.f, x.e };
     }
 
     /*!
@@ -133,11 +136,11 @@ struct diyfp // f * 2^e
         // Effectively we only need to add the highest bit in p_lo to p_hi (and
         // Q_hi + 1 does not overflow).
 
-        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+        Q += std::uint64_t{ 1 } << (64u - 32u - 1u);  // round, ties up
 
         const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
 
-        return {h, x.e + y.e + 64};
+        return { h, x.e + y.e + 64 };
     }
 
     /*!
@@ -168,7 +171,7 @@ struct diyfp // f * 2^e
         JSON_ASSERT(delta >= 0);
         JSON_ASSERT(((x.f << delta) >> delta) == x.f);
 
-        return {x.f << delta, target_exponent};
+        return { x.f << delta, target_exponent };
     }
 };
 
@@ -198,24 +201,21 @@ boundaries compute_boundaries(FloatType value)
     // If v is normalized:
     //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
 
-    static_assert(std::numeric_limits<FloatType>::is_iec559,
+    static_assert(std::numeric_limits<FloatType>::is_iec559, "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
-                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
 
     constexpr int kPrecision = std::numeric_limits<FloatType>::digits;  // = p (includes the hidden bit)
     constexpr int kBias = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
     constexpr int kMinExp = 1 - kBias;
-    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{ 1 } << (kPrecision - 1);  // = 2^(p-1)
 
-    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t>::type;
 
     const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
     const std::uint64_t E = bits >> (kPrecision - 1);
     const std::uint64_t F = bits & (kHiddenBit - 1);
 
     const bool is_denormal = E == 0;
-    const diyfp v = is_denormal
+    const diyfp v = is_denormal ? diyfp(F, kMinExp) : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
-                    ? diyfp(F, kMinExp)
-                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
 
     // Compute the boundaries m- and m+ of the floating-point value
     // v = f * 2^e.
@@ -240,8 +240,7 @@ boundaries compute_boundaries(FloatType value)
 
     const bool lower_boundary_is_closer = F == 0 && E > 1;
     const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
-    const diyfp m_minus = lower_boundary_is_closer
+    const diyfp m_minus = lower_boundary_is_closer ? diyfp(4 * v.f - 1, v.e - 2)   // (B)
-                          ? diyfp(4 * v.f - 1, v.e - 2)  // (B)
                                                    : diyfp(2 * v.f - 1, v.e - 1);  // (A)
 
     // Determine the normalized w+ = m+.
@@ -250,7 +249,7 @@ boundaries compute_boundaries(FloatType value)
     // Determine w- = m- such that e_(w-) = e_(w+).
     const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
 
-    return {diyfp::normalize(v), w_minus, w_plus};
+    return { diyfp::normalize(v), w_minus, w_plus };
 }
 
 // Given normalized diyfp w, Grisu needs to find a (normalized) cached
@@ -380,90 +379,28 @@ inline cached_power get_cached_power_for_binary_exponent(int e)
     constexpr int kCachedPowersMinDecExp = -300;
     constexpr int kCachedPowersDecStep = 8;
 
-    static constexpr std::array<cached_power, 79> kCachedPowers =
+    static constexpr std::array<cached_power, 79> kCachedPowers = { {
-    {
+        { 0xAB70FE17C79AC6CA, -1060, -300 }, { 0xFF77B1FCBEBCDC4F, -1034, -292 }, { 0xBE5691EF416BD60C, -1007, -284 }, { 0x8DD01FAD907FFC3C, -980, -276 },
-        {
+        { 0xD3515C2831559A83, -954, -268 },  { 0x9D71AC8FADA6C9B5, -927, -260 },  { 0xEA9C227723EE8BCB, -901, -252 },  { 0xAECC49914078536D, -874, -244 },
-            { 0xAB70FE17C79AC6CA, -1060, -300 },
+        { 0x823C12795DB6CE57, -847, -236 },  { 0xC21094364DFB5637, -821, -228 },  { 0x9096EA6F3848984F, -794, -220 },  { 0xD77485CB25823AC7, -768, -212 },
-            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+        { 0xA086CFCD97BF97F4, -741, -204 },  { 0xEF340A98172AACE5, -715, -196 },  { 0xB23867FB2A35B28E, -688, -188 },  { 0x84C8D4DFD2C63F3B, -661, -180 },
-            { 0xBE5691EF416BD60C, -1007, -284 },
+        { 0xC5DD44271AD3CDBA, -635, -172 },  { 0x936B9FCEBB25C996, -608, -164 },  { 0xDBAC6C247D62A584, -582, -156 },  { 0xA3AB66580D5FDAF6, -555, -148 },
-            { 0x8DD01FAD907FFC3C,  -980, -276 },
+        { 0xF3E2F893DEC3F126, -529, -140 },  { 0xB5B5ADA8AAFF80B8, -502, -132 },  { 0x87625F056C7C4A8B, -475, -124 },  { 0xC9BCFF6034C13053, -449, -116 },
-            { 0xD3515C2831559A83,  -954, -268 },
+        { 0x964E858C91BA2655, -422, -108 },  { 0xDFF9772470297EBD, -396, -100 },  { 0xA6DFBD9FB8E5B88F, -369, -92 },   { 0xF8A95FCF88747D94, -343, -84 },
-            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+        { 0xB94470938FA89BCF, -316, -76 },   { 0x8A08F0F8BF0F156B, -289, -68 },   { 0xCDB02555653131B6, -263, -60 },   { 0x993FE2C6D07B7FAC, -236, -52 },
-            { 0xEA9C227723EE8BCB,  -901, -252 },
+        { 0xE45C10C42A2B3B06, -210, -44 },   { 0xAA242499697392D3, -183, -36 },   { 0xFD87B5F28300CA0E, -157, -28 },   { 0xBCE5086492111AEB, -130, -20 },
-            { 0xAECC49914078536D,  -874, -244 },
+        { 0x8CBCCC096F5088CC, -103, -12 },   { 0xD1B71758E219652C, -77, -4 },     { 0x9C40000000000000, -50, 4 },      { 0xE8D4A51000000000, -24, 12 },
-            { 0x823C12795DB6CE57,  -847, -236 },
+        { 0xAD78EBC5AC620000, 3, 20 },       { 0x813F3978F8940984, 30, 28 },      { 0xC097CE7BC90715B3, 56, 36 },      { 0x8F7E32CE7BEA5C70, 83, 44 },
-            { 0xC21094364DFB5637,  -821, -228 },
+        { 0xD5D238A4ABE98068, 109, 52 },     { 0x9F4F2726179A2245, 136, 60 },     { 0xED63A231D4C4FB27, 162, 68 },     { 0xB0DE65388CC8ADA8, 189, 76 },
-            { 0x9096EA6F3848984F,  -794, -220 },
+        { 0x83C7088E1AAB65DB, 216, 84 },     { 0xC45D1DF942711D9A, 242, 92 },     { 0x924D692CA61BE758, 269, 100 },    { 0xDA01EE641A708DEA, 295, 108 },
-            { 0xD77485CB25823AC7,  -768, -212 },
+        { 0xA26DA3999AEF774A, 322, 116 },    { 0xF209787BB47D6B85, 348, 124 },    { 0xB454E4A179DD1877, 375, 132 },    { 0x865B86925B9BC5C2, 402, 140 },
-            { 0xA086CFCD97BF97F4,  -741, -204 },
+        { 0xC83553C5C8965D3D, 428, 148 },    { 0x952AB45CFA97A0B3, 455, 156 },    { 0xDE469FBD99A05FE3, 481, 164 },    { 0xA59BC234DB398C25, 508, 172 },
-            { 0xEF340A98172AACE5,  -715, -196 },
+        { 0xF6C69A72A3989F5C, 534, 180 },    { 0xB7DCBF5354E9BECE, 561, 188 },    { 0x88FCF317F22241E2, 588, 196 },    { 0xCC20CE9BD35C78A5, 614, 204 },
-            { 0xB23867FB2A35B28E,  -688, -188 },
+        { 0x98165AF37B2153DF, 641, 212 },    { 0xE2A0B5DC971F303A, 667, 220 },    { 0xA8D9D1535CE3B396, 694, 228 },    { 0xFB9B7CD9A4A7443C, 720, 236 },
-            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+        { 0xBB764C4CA7A44410, 747, 244 },    { 0x8BAB8EEFB6409C1A, 774, 252 },    { 0xD01FEF10A657842C, 800, 260 },    { 0x9B10A4E5E9913129, 827, 268 },
-            { 0xC5DD44271AD3CDBA,  -635, -172 },
+        { 0xE7109BFBA19C0C9D, 853, 276 },    { 0xAC2820D9623BF429, 880, 284 },    { 0x80444B5E7AA7CF85, 907, 292 },    { 0xBF21E44003ACDD2D, 933, 300 },
-            { 0x936B9FCEBB25C996,  -608, -164 },
+        { 0x8E679C2F5E44FF8F, 960, 308 },    { 0xD433179D9C8CB841, 986, 316 },    { 0x9E19DB92B4E31BA9, 1013, 324 },
-            { 0xDBAC6C247D62A584,  -582, -156 },
+    } };
-            { 0xA3AB66580D5FDAF6,  -555, -148 },
-            { 0xF3E2F893DEC3F126,  -529, -140 },
-            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
-            { 0x87625F056C7C4A8B,  -475, -124 },
-            { 0xC9BCFF6034C13053,  -449, -116 },
-            { 0x964E858C91BA2655,  -422, -108 },
-            { 0xDFF9772470297EBD,  -396, -100 },
-            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
-            { 0xF8A95FCF88747D94,  -343,  -84 },
-            { 0xB94470938FA89BCF,  -316,  -76 },
-            { 0x8A08F0F8BF0F156B,  -289,  -68 },
-            { 0xCDB02555653131B6,  -263,  -60 },
-            { 0x993FE2C6D07B7FAC,  -236,  -52 },
-            { 0xE45C10C42A2B3B06,  -210,  -44 },
-            { 0xAA242499697392D3,  -183,  -36 },
-            { 0xFD87B5F28300CA0E,  -157,  -28 },
-            { 0xBCE5086492111AEB,  -130,  -20 },
-            { 0x8CBCCC096F5088CC,  -103,  -12 },
-            { 0xD1B71758E219652C,   -77,   -4 },
-            { 0x9C40000000000000,   -50,    4 },
-            { 0xE8D4A51000000000,   -24,   12 },
-            { 0xAD78EBC5AC620000,     3,   20 },
-            { 0x813F3978F8940984,    30,   28 },
-            { 0xC097CE7BC90715B3,    56,   36 },
-            { 0x8F7E32CE7BEA5C70,    83,   44 },
-            { 0xD5D238A4ABE98068,   109,   52 },
-            { 0x9F4F2726179A2245,   136,   60 },
-            { 0xED63A231D4C4FB27,   162,   68 },
-            { 0xB0DE65388CC8ADA8,   189,   76 },
-            { 0x83C7088E1AAB65DB,   216,   84 },
-            { 0xC45D1DF942711D9A,   242,   92 },
-            { 0x924D692CA61BE758,   269,  100 },
-            { 0xDA01EE641A708DEA,   295,  108 },
-            { 0xA26DA3999AEF774A,   322,  116 },
-            { 0xF209787BB47D6B85,   348,  124 },
-            { 0xB454E4A179DD1877,   375,  132 },
-            { 0x865B86925B9BC5C2,   402,  140 },
-            { 0xC83553C5C8965D3D,   428,  148 },
-            { 0x952AB45CFA97A0B3,   455,  156 },
-            { 0xDE469FBD99A05FE3,   481,  164 },
-            { 0xA59BC234DB398C25,   508,  172 },
-            { 0xF6C69A72A3989F5C,   534,  180 },
-            { 0xB7DCBF5354E9BECE,   561,  188 },
-            { 0x88FCF317F22241E2,   588,  196 },
-            { 0xCC20CE9BD35C78A5,   614,  204 },
-            { 0x98165AF37B2153DF,   641,  212 },
-            { 0xE2A0B5DC971F303A,   667,  220 },
-            { 0xA8D9D1535CE3B396,   694,  228 },
-            { 0xFB9B7CD9A4A7443C,   720,  236 },
-            { 0xBB764C4CA7A44410,   747,  244 },
-            { 0x8BAB8EEFB6409C1A,   774,  252 },
-            { 0xD01FEF10A657842C,   800,  260 },
-            { 0x9B10A4E5E9913129,   827,  268 },
-            { 0xE7109BFBA19C0C9D,   853,  276 },
-            { 0xAC2820D9623BF429,   880,  284 },
-            { 0x80444B5E7AA7CF85,   907,  292 },
-            { 0xBF21E44003ACDD2D,   933,  300 },
-            { 0x8E679C2F5E44FF8F,   960,  308 },
-            { 0xD433179D9C8CB841,   986,  316 },
-            { 0x9E19DB92B4E31BA9,  1013,  324 },
-        }
-    };
 
     // This computation gives exactly the same results for k as
     //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
@@ -543,8 +480,7 @@ inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
     return 1;
 }
 
-inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta, std::uint64_t rest, std::uint64_t ten_k)
-                         std::uint64_t rest, std::uint64_t ten_k)
 {
     JSON_ASSERT(len >= 1);
     JSON_ASSERT(dist <= delta);
@@ -570,9 +506,7 @@ inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t d
     // The tests are written in this order to avoid overflow in unsigned
     // integer arithmetic.
 
-    while (rest < dist
+    while (rest < dist && delta - rest >= ten_k && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
-            && delta - rest >= ten_k
-            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
     {
         JSON_ASSERT(buf[len - 1] != '0');
         buf[len - 1]--;
@@ -584,8 +518,7 @@ inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t d
 Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
 M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
 */
-inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent, diyfp M_minus, diyfp w, diyfp M_plus)
-                             diyfp M_minus, diyfp w, diyfp M_plus)
 {
     static_assert(kAlpha >= -60, "internal error");
     static_assert(kGamma <= -32, "internal error");
@@ -606,7 +539,7 @@ inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
     JSON_ASSERT(M_plus.e <= kGamma);
 
     std::uint64_t delta = diyfp::sub(M_plus, M_minus).f;  // (significand of (M+ - M-), implicit exponent is e)
-    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+    std::uint64_t dist = diyfp::sub(M_plus, w).f;         // (significand of (M+ - w ), implicit exponent is e)
 
     // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
     //
@@ -615,7 +548,7 @@ inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
     //         = ((p1        ) * 2^-e + (p2        )) * 2^e
     //         = p1 + p2 * 2^e
 
-    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+    const diyfp one(std::uint64_t{ 1 } << -M_plus.e, M_plus.e);
 
     auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e);  // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
     std::uint64_t p2 = M_plus.f & (one.f - 1);                 // p2 = f mod 2^-e
@@ -680,7 +613,7 @@ inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
         // Note:
         // Since rest and delta share the same exponent e, it suffices to
         // compare the significands.
-        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        const std::uint64_t rest = (std::uint64_t{ p1 } << -one.e) + p2;
         if (rest <= delta)
         {
             // V = buffer * 10^n, with M- <= V <= M+.
@@ -696,7 +629,7 @@ inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
             //
             //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
             //
-            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            const std::uint64_t ten_n = std::uint64_t{ pow10 } << -one.e;
             grisu2_round(buffer, length, dist, delta, rest, ten_n);
 
             return;
@@ -825,8 +758,7 @@ len is the length of the buffer (number of decimal digits)
 The buffer must be large enough, i.e. >= max_digits10.
 */
 JSON_HEDLEY_NON_NULL(1)
-inline void grisu2(char* buf, int& len, int& decimal_exponent,
+inline void grisu2(char* buf, int& len, int& decimal_exponent, diyfp m_minus, diyfp v, diyfp m_plus)
-                   diyfp m_minus, diyfp v, diyfp m_plus)
 {
     JSON_ASSERT(m_plus.e == m_minus.e);
     JSON_ASSERT(m_plus.e == v.e);
@@ -871,7 +803,7 @@ inline void grisu2(char* buf, int& len, int& decimal_exponent,
     // Note that this does not mean that Grisu2 always generates the shortest
     // possible number in the interval (m-, m+).
     const diyfp M_minus(w_minus.f + 1, w_minus.e);
-    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+    const diyfp M_plus(w_plus.f - 1, w_plus.e);
 
     decimal_exponent = -cached.k;  // = -(-k) = k
 
@@ -887,8 +819,7 @@ template<typename FloatType>
 JSON_HEDLEY_NON_NULL(1)
 void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
 {
-    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3, "internal error: not enough precision");
-                  "internal error: not enough precision");
 
     JSON_ASSERT(std::isfinite(value));
     JSON_ASSERT(value > 0);
@@ -977,8 +908,7 @@ notation. Otherwise it will be printed in exponential notation.
 */
 JSON_HEDLEY_NON_NULL(1)
 JSON_HEDLEY_RETURNS_NON_NULL
-inline char* format_buffer(char* buf, int len, int decimal_exponent,
+inline char* format_buffer(char* buf, int len, int decimal_exponent, int min_exp, int max_exp)
-                           int min_exp, int max_exp)
 {
     JSON_ASSERT(min_exp < 0);
     JSON_ASSERT(max_exp > 0);
@@ -1061,8 +991,7 @@ format. Returns an iterator pointing past-the-end of the decimal representation.
 */
 template<typename FloatType>
 JSON_HEDLEY_NON_NULL(1, 2)
-JSON_HEDLEY_RETURNS_NON_NULL
+JSON_HEDLEY_RETURNS_NON_NULL char* to_chars(char* first, const char* last, FloatType value)
-char* to_chars(char* first, const char* last, FloatType value)
 {
     static_cast<void>(last);  // maybe unused - fix warning
     JSON_ASSERT(std::isfinite(value));
@@ -1075,8 +1004,8 @@ char* to_chars(char* first, const char* last, FloatType value)
     }
 
 #ifdef __GNUC__
-#pragma GCC diagnostic push
+    #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
+    #pragma GCC diagnostic ignored "-Wfloat-equal"
 #endif
     if (value == 0)  // +-0
     {
@@ -1087,7 +1016,7 @@ char* to_chars(char* first, const char* last, FloatType value)
         return first;
     }
 #ifdef __GNUC__
-#pragma GCC diagnostic pop
+    #pragma GCC diagnostic pop
 #endif
 
     JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);

include/nlohmann/detail/conversions/to_json.hpp

@@ -39,7 +39,8 @@ namespace detail
  * https://github.com/nlohmann/json/issues/2865 for more information.
  */
 
-template<value_t> struct external_constructor;
+template<value_t>
+struct external_constructor;
 
 template<>
 struct external_constructor<value_t::boolean>
@@ -75,9 +76,9 @@ struct external_constructor<value_t::string>
         j.assert_invariant();
     }
 
-    template < typename BasicJsonType, typename CompatibleStringType,
+    template<typename BasicJsonType,
-               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+             typename CompatibleStringType,
-                             int > = 0 >
+             enable_if_t<!std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value, int> = 0>
     static void construct(BasicJsonType& j, const CompatibleStringType& str)
     {
         j.m_data.m_value.destroy(j.m_data.m_type);
@@ -171,9 +172,9 @@ struct external_constructor<value_t::array>
         j.assert_invariant();
     }
 
-    template < typename BasicJsonType, typename CompatibleArrayType,
+    template<typename BasicJsonType,
-               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+             typename CompatibleArrayType,
-                             int > = 0 >
+             enable_if_t<!std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value, int> = 0>
     static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
     {
         using std::begin;
@@ -201,8 +202,7 @@ struct external_constructor<value_t::array>
         j.assert_invariant();
     }
 
-    template<typename BasicJsonType, typename T,
+    template<typename BasicJsonType, typename T, enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
-             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
     static void construct(BasicJsonType& j, const std::valarray<T>& arr)
     {
         j.m_data.m_value.destroy(j.m_data.m_type);
@@ -241,8 +241,9 @@ struct external_constructor<value_t::object>
         j.assert_invariant();
     }
 
-    template < typename BasicJsonType, typename CompatibleObjectType,
+    template<typename BasicJsonType,
-               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+             typename CompatibleObjectType,
+             enable_if_t<!std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int> = 0>
     static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
     {
         using std::begin;
@@ -260,27 +261,27 @@ struct external_constructor<value_t::object>
 // to_json //
 /////////////
 
-template<typename BasicJsonType, typename T,
+template<typename BasicJsonType, typename T, enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
-         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
 inline void to_json(BasicJsonType& j, T b) noexcept
 {
     external_constructor<value_t::boolean>::construct(j, b);
 }
 
-template < typename BasicJsonType, typename BoolRef,
+template<typename BasicJsonType,
-           enable_if_t <
+         typename BoolRef,
-               ((std::is_same<std::vector<bool>::reference, BoolRef>::value
+         enable_if_t<((std::is_same<std::vector<bool>::reference, BoolRef>::value &&
-                 && !std::is_same <std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value)
+                       !std::is_same<std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value) ||
-                || (std::is_same<std::vector<bool>::const_reference, BoolRef>::value
+                      (std::is_same<std::vector<bool>::const_reference, BoolRef>::value &&
-                    && !std::is_same <detail::uncvref_t<std::vector<bool>::const_reference>,
+                       !std::is_same<detail::uncvref_t<std::vector<bool>::const_reference>, typename BasicJsonType::boolean_t>::value)) &&
-                                      typename BasicJsonType::boolean_t >::value))
+                         std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value,
-               && std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value, int > = 0 >
+                     int> = 0>
 inline void to_json(BasicJsonType& j, const BoolRef& b) noexcept
 {
     external_constructor<value_t::boolean>::construct(j, static_cast<typename BasicJsonType::boolean_t>(b));
 }
 
-template<typename BasicJsonType, typename CompatibleString,
+template<typename BasicJsonType,
+         typename CompatibleString,
          enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const CompatibleString& s)
 {
@@ -293,21 +294,22 @@ inline void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
     external_constructor<value_t::string>::construct(j, std::move(s));
 }
 
-template<typename BasicJsonType, typename FloatType,
+template<typename BasicJsonType, typename FloatType, enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
-         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, FloatType val) noexcept
 {
     external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
 }
 
-template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+template<typename BasicJsonType,
+         typename CompatibleNumberUnsignedType,
          enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
 {
     external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
 }
 
-template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+template<typename BasicJsonType,
+         typename CompatibleNumberIntegerType,
          enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
 {
@@ -315,8 +317,7 @@ inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
 }
 
 #if !JSON_DISABLE_ENUM_SERIALIZATION
-template<typename BasicJsonType, typename EnumType,
+template<typename BasicJsonType, typename EnumType, enable_if_t<std::is_enum<EnumType>::value, int> = 0>
-         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, EnumType e) noexcept
 {
     using underlying_type = typename std::underlying_type<EnumType>::type;
@@ -330,14 +331,13 @@ inline void to_json(BasicJsonType& j, const std::vector<bool>& e)
     external_constructor<value_t::array>::construct(j, e);
 }
 
-template < typename BasicJsonType, typename CompatibleArrayType,
+template<
-           enable_if_t < is_compatible_array_type<BasicJsonType,
+    typename BasicJsonType,
-                         CompatibleArrayType>::value&&
+    typename CompatibleArrayType,
-                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+    enable_if_t<is_compatible_array_type<BasicJsonType, CompatibleArrayType>::value && !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value &&
-                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                    !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value &&
-                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                    !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value && !is_basic_json<CompatibleArrayType>::value,
-                         !is_basic_json<CompatibleArrayType>::value,
+                int> = 0>
-                         int > = 0 >
 inline void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
 {
     external_constructor<value_t::array>::construct(j, arr);
@@ -349,8 +349,7 @@ inline void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bi
     external_constructor<value_t::binary>::construct(j, bin);
 }
 
-template<typename BasicJsonType, typename T,
+template<typename BasicJsonType, typename T, enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
-         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const std::valarray<T>& arr)
 {
     external_constructor<value_t::array>::construct(j, std::move(arr));
@@ -362,8 +361,9 @@ inline void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
     external_constructor<value_t::array>::construct(j, std::move(arr));
 }
 
-template < typename BasicJsonType, typename CompatibleObjectType,
+template<typename BasicJsonType,
-           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+         typename CompatibleObjectType,
+         enable_if_t<is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value && !is_basic_json<CompatibleObjectType>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
 {
     external_constructor<value_t::object>::construct(j, obj);
@@ -375,28 +375,31 @@ inline void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
     external_constructor<value_t::object>::construct(j, std::move(obj));
 }
 
-template <
+template<typename BasicJsonType,
-    typename BasicJsonType, typename T, std::size_t N,
+         typename T,
-    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+         std::size_t N,
-                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+         enable_if_t<!std::is_constructible<typename BasicJsonType::string_t,
-                  int > = 0 >
+                                            const T (&)[N]>::value,  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-inline void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                     int> = 0>
+inline void to_json(BasicJsonType& j, const T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
 {
     external_constructor<value_t::array>::construct(j, arr);
 }
 
-template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+template<typename BasicJsonType,
+         typename T1,
+         typename T2,
+         enable_if_t<std::is_constructible<BasicJsonType, T1>::value && std::is_constructible<BasicJsonType, T2>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
 {
     j = { p.first, p.second };
 }
 
 // for https://github.com/nlohmann/json/pull/1134
-template<typename BasicJsonType, typename T,
+template<typename BasicJsonType, typename T, enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
-         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const T& b)
 {
-    j = { {b.key(), b.value()} };
+    j = { { b.key(), b.value() } };
 }
 
 template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
@@ -405,10 +408,10 @@ inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<
     j = { std::get<Idx>(t)... };
 }
 
-template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int> = 0>
 inline void to_json(BasicJsonType& j, const T& t)
 {
-    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value>{});
 }
 
 #if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
@@ -422,8 +425,7 @@ inline void to_json(BasicJsonType& j, const std_fs::path& p)
 struct to_json_fn
 {
     template<typename BasicJsonType, typename T>
-    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val)))) -> decltype(to_json(j, std::forward<T>(val)), void())
-    -> decltype(to_json(j, std::forward<T>(val)), void())
     {
         return to_json(j, std::forward<T>(val));
     }

include/nlohmann/detail/exceptions.hpp

@@ -17,13 +17,13 @@
 #include <string>     // to_string
 #include <vector>     // vector
 
-#include <nlohmann/detail/value_t.hpp>
-#include <nlohmann/detail/string_escape.hpp>
 #include <nlohmann/detail/input/position_t.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
 #include <nlohmann/detail/meta/cpp_future.hpp>
 #include <nlohmann/detail/meta/type_traits.hpp>
 #include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/string_escape.hpp>
+#include <nlohmann/detail/value_t.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
@@ -49,7 +49,10 @@ class exception : public std::exception
 
   protected:
     JSON_HEDLEY_NON_NULL(3)
-    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
+    exception(int id_, const char* what_arg)
+      : id(id_)
+      , m(what_arg)  // NOLINT(bugprone-throw-keyword-missing)
+    {}
 
     static std::string name(const std::string& ename, int id_)
     {
@@ -114,9 +117,7 @@ class exception : public std::exception
             return "";
         }
 
-        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{}, [](const std::string& a, const std::string& b) {
-                                   [](const std::string & a, const std::string & b)
-        {
             return concat(a, '/', detail::escape(b));
         });
         return concat('(', str, ") ");
@@ -148,18 +149,20 @@ class parse_error : public exception
     template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
     static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
     {
-        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+        const std::string w = concat(exception::name("parse_error", id_), "parse error", position_string(pos), ": ", exception::diagnostics(context), what_arg);
-                                     position_string(pos), ": ", exception::diagnostics(context), what_arg);
+        return { id_, pos.chars_read_total, w.c_str() };
-        return {id_, pos.chars_read_total, w.c_str()};
     }
 
     template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
     static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
     {
-        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+        const std::string w = concat(exception::name("parse_error", id_),
+                                     "parse error",
                                      (byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
-                                     ": ", exception::diagnostics(context), what_arg);
+                                     ": ",
-        return {id_, byte_, w.c_str()};
+                                     exception::diagnostics(context),
+                                     what_arg);
+        return { id_, byte_, w.c_str() };
     }
 
     /*!
@@ -175,12 +178,13 @@ class parse_error : public exception
 
   private:
     parse_error(int id_, std::size_t byte_, const char* what_arg)
-        : exception(id_, what_arg), byte(byte_) {}
+      : exception(id_, what_arg)
+      , byte(byte_)
+    {}
 
     static std::string position_string(const position_t& pos)
     {
-        return concat(" at line ", std::to_string(pos.lines_read + 1),
+        return concat(" at line ", std::to_string(pos.lines_read + 1), ", column ", std::to_string(pos.chars_read_current_line));
-                      ", column ", std::to_string(pos.chars_read_current_line));
     }
 };
 
@@ -193,13 +197,14 @@ class invalid_iterator : public exception
     static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
     {
         const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
+        return { id_, w.c_str() };
     }
 
   private:
     JSON_HEDLEY_NON_NULL(3)
     invalid_iterator(int id_, const char* what_arg)
-        : exception(id_, what_arg) {}
+      : exception(id_, what_arg)
+    {}
 };
 
 /// @brief exception indicating executing a member function with a wrong type
@@ -211,12 +216,14 @@ class type_error : public exception
     static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
     {
         const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
+        return { id_, w.c_str() };
     }
 
   private:
     JSON_HEDLEY_NON_NULL(3)
-    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+    type_error(int id_, const char* what_arg)
+      : exception(id_, what_arg)
+    {}
 };
 
 /// @brief exception indicating access out of the defined range
@@ -228,12 +235,14 @@ class out_of_range : public exception
     static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
     {
         const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
+        return { id_, w.c_str() };
     }
 
   private:
     JSON_HEDLEY_NON_NULL(3)
-    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+    out_of_range(int id_, const char* what_arg)
+      : exception(id_, what_arg)
+    {}
 };
 
 /// @brief exception indicating other library errors
@@ -245,12 +254,14 @@ class other_error : public exception
     static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
     {
         const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
+        return { id_, w.c_str() };
     }
 
   private:
     JSON_HEDLEY_NON_NULL(3)
-    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+    other_error(int id_, const char* what_arg)
+      : exception(id_, what_arg)
+    {}
 };
 
 }  // namespace detail

include/nlohmann/detail/hash.hpp

@@ -8,8 +8,8 @@
 
 #pragma once
 
-#include <cstdint> // uint8_t
 #include <cstddef>     // size_t
+#include <cstdint>     // uint8_t
 #include <functional>  // hash
 
 #include <nlohmann/detail/abi_macros.hpp>
@@ -59,7 +59,7 @@ std::size_t hash(const BasicJsonType& j)
             auto seed = combine(type, j.size());
             for (const auto& element : j.items())
             {
-                const auto h = std::hash<string_t> {}(element.key());
+                const auto h = std::hash<string_t>{}(element.key());
                 seed = combine(seed, h);
                 seed = combine(seed, hash(element.value()));
             }
@@ -78,43 +78,43 @@ std::size_t hash(const BasicJsonType& j)
 
         case BasicJsonType::value_t::string:
         {
-            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            const auto h = std::hash<string_t>{}(j.template get_ref<const string_t&>());
             return combine(type, h);
         }
 
         case BasicJsonType::value_t::boolean:
         {
-            const auto h = std::hash<bool> {}(j.template get<bool>());
+            const auto h = std::hash<bool>{}(j.template get<bool>());
             return combine(type, h);
         }
 
         case BasicJsonType::value_t::number_integer:
         {
-            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            const auto h = std::hash<number_integer_t>{}(j.template get<number_integer_t>());
             return combine(type, h);
         }
 
         case BasicJsonType::value_t::number_unsigned:
         {
-            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            const auto h = std::hash<number_unsigned_t>{}(j.template get<number_unsigned_t>());
             return combine(type, h);
         }
 
         case BasicJsonType::value_t::number_float:
         {
-            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            const auto h = std::hash<number_float_t>{}(j.template get<number_float_t>());
             return combine(type, h);
         }
 
         case BasicJsonType::value_t::binary:
         {
             auto seed = combine(type, j.get_binary().size());
-            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            const auto h = std::hash<bool>{}(j.get_binary().has_subtype());
             seed = combine(seed, h);
             seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
             for (const auto byte : j.get_binary())
             {
-                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+                seed = combine(seed, std::hash<std::uint8_t>{}(byte));
             }
             return seed;
         }

include/nlohmann/detail/input/binary_reader.hpp

@@ -80,9 +80,11 @@ class binary_reader
 
     @param[in] adapter  input adapter to read from
     */
-    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept : ia(std::move(adapter)), input_format(format)
+    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept
+      : ia(std::move(adapter))
+      , input_format(format)
     {
-        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType>{};
     }
 
     // make class move-only
@@ -101,10 +103,7 @@ class binary_reader
     @return whether parsing was successful
     */
     JSON_HEDLEY_NON_NULL(3)
-    bool sax_parse(const input_format_t format,
+    bool sax_parse(const input_format_t format, json_sax_t* sax_, const bool strict = true, const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-                   json_sax_t* sax_,
-                   const bool strict = true,
-                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
     {
         sax = sax_;
         bool result = false;
@@ -147,8 +146,13 @@ class binary_reader
 
             if (JSON_HEDLEY_UNLIKELY(current != char_traits<char_type>::eof()))
             {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
+                    chars_read,
+                    get_token_string(),
+                    parse_error::create(110,
+                                        chars_read,
+                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"),
+                                        nullptr));
             }
         }
 
@@ -174,7 +178,7 @@ class binary_reader
             return false;
         }
 
-        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/ false)))
         {
             return false;
         }
@@ -224,8 +228,13 @@ class binary_reader
         if (JSON_HEDLEY_UNLIKELY(len < 1))
         {
             auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+            return sax->parse_error(
-                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
+                chars_read,
+                last_token,
+                parse_error::create(112,
+                                    chars_read,
+                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"),
+                                    nullptr));
         }
 
         return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != char_traits<char_type>::eof();
@@ -246,8 +255,13 @@ class binary_reader
         if (JSON_HEDLEY_UNLIKELY(len < 0))
         {
             auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+            return sax->parse_error(
-                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
+                chars_read,
+                last_token,
+                parse_error::create(112,
+                                    chars_read,
+                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"),
+                                    nullptr));
         }
 
         // All BSON binary values have a subtype
@@ -268,8 +282,7 @@ class binary_reader
              Unsupported BSON record type 0x...
     @return whether a valid BSON-object/array was passed to the SAX parser
     */
-    bool parse_bson_element_internal(const char_int_type element_type,
+    bool parse_bson_element_internal(const char_int_type element_type, const std::size_t element_type_parse_position)
-                                     const std::size_t element_type_parse_position)
     {
         switch (element_type)
         {
@@ -327,10 +340,14 @@ class binary_reader
 
             default:  // anything else not supported (yet)
             {
-                std::array<char, 3> cr{{}};
+                std::array<char, 3> cr{ {} };
-                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                static_cast<void>((std::snprintf)(cr.data(),  // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                const std::string cr_str{cr.data()};
+                                                  cr.size(),
-                return sax->parse_error(element_type_parse_position, cr_str,
+                                                  "%.2hhX",
+                                                  static_cast<unsigned char>(element_type)));
+                const std::string cr_str{ cr.data() };
+                return sax->parse_error(element_type_parse_position,
+                                        cr_str,
                                         parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
             }
         }
@@ -396,7 +413,7 @@ class binary_reader
             return false;
         }
 
-        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/ true)))
         {
             return false;
         }
@@ -416,8 +433,7 @@ class binary_reader
 
     @return whether a valid CBOR value was passed to the SAX parser
     */
-    bool parse_cbor_internal(const bool get_char,
+    bool parse_cbor_internal(const bool get_char, const cbor_tag_handler_t tag_handler)
-                             const cbor_tag_handler_t tag_handler)
     {
         switch (get_char ? get() : current)
         {
@@ -524,8 +540,8 @@ class binary_reader
             case 0x3B:  // Negative integer -1-n (eight-byte uint64_t follows)
             {
                 std::uint64_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                return get_number(input_format_t::cbor, number) &&
-                        - static_cast<number_integer_t>(number));
+                       sax->number_integer(static_cast<number_integer_t>(-1) - static_cast<number_integer_t>(number));
             }
 
             // Binary data (0x00..0x17 bytes follow)
@@ -623,8 +639,7 @@ class binary_reader
             case 0x95:
             case 0x96:
             case 0x97:
-                return get_cbor_array(
+                return get_cbor_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
-                           conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
 
             case 0x98:  // array (one-byte uint8_t for n follows)
             {
@@ -732,8 +747,12 @@ class binary_reader
                     case cbor_tag_handler_t::error:
                     {
                         auto last_token = get_token_string();
-                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                        return sax->parse_error(chars_read,
-                                                exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                                                last_token,
+                                                parse_error::create(112,
+                                                                    chars_read,
+                                                                    exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"),
+                                                                    nullptr));
                     }
 
                     case cbor_tag_handler_t::ignore:
@@ -852,27 +871,22 @@ class binary_reader
                 // half-precision floating-point numbers in the C language
                 // is shown in Fig. 3.
                 const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
-                const double val = [&half]
+                const double val = [&half] {
-                {
                     const int exp = (half >> 10u) & 0x1Fu;
                     const unsigned int mant = half & 0x3FFu;
-                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(0 <= exp && exp <= 32);
                     JSON_ASSERT(mant <= 1024);
                     switch (exp)
                     {
                         case 0:
                             return std::ldexp(mant, -24);
                         case 31:
-                            return (mant == 0)
+                            return (mant == 0) ? std::numeric_limits<double>::infinity() : std::numeric_limits<double>::quiet_NaN();
-                            ? std::numeric_limits<double>::infinity()
-                            : std::numeric_limits<double>::quiet_NaN();
                         default:
                             return std::ldexp(mant + 1024, exp - 25);
                     }
                 }();
-                return sax->number_float((half & 0x8000u) != 0
+                return sax->number_float((half & 0x8000u) != 0 ? static_cast<number_float_t>(-val) : static_cast<number_float_t>(val), "");
-                                         ? static_cast<number_float_t>(-val)
-                                         : static_cast<number_float_t>(val), "");
             }
 
             case 0xFA:  // Single-Precision Float (four-byte IEEE 754)
@@ -890,8 +904,10 @@ class binary_reader
             default:  // anything else (0xFF is handled inside the other types)
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(112, chars_read, exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
             }
         }
     }
@@ -986,8 +1002,16 @@ class binary_reader
             default:
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format_t::cbor, concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token), "string"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(
+                        113,
+                        chars_read,
+                        exception_message(input_format_t::cbor,
+                                          concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token),
+                                          "string"),
+                        nullptr));
             }
         }
     }
@@ -1044,29 +1068,25 @@ class binary_reader
             case 0x58:  // Binary data (one-byte uint8_t for n follows)
             {
                 std::uint8_t len{};
-                return get_number(input_format_t::cbor, len) &&
+                return get_number(input_format_t::cbor, len) && get_binary(input_format_t::cbor, len, result);
-                       get_binary(input_format_t::cbor, len, result);
             }
 
             case 0x59:  // Binary data (two-byte uint16_t for n follow)
             {
                 std::uint16_t len{};
-                return get_number(input_format_t::cbor, len) &&
+                return get_number(input_format_t::cbor, len) && get_binary(input_format_t::cbor, len, result);
-                       get_binary(input_format_t::cbor, len, result);
             }
 
             case 0x5A:  // Binary data (four-byte uint32_t for n follow)
             {
                 std::uint32_t len{};
-                return get_number(input_format_t::cbor, len) &&
+                return get_number(input_format_t::cbor, len) && get_binary(input_format_t::cbor, len, result);
-                       get_binary(input_format_t::cbor, len, result);
             }
 
             case 0x5B:  // Binary data (eight-byte uint64_t for n follow)
             {
                 std::uint64_t len{};
-                return get_number(input_format_t::cbor, len) &&
+                return get_number(input_format_t::cbor, len) && get_binary(input_format_t::cbor, len, result);
-                       get_binary(input_format_t::cbor, len, result);
             }
 
             case 0x5F:  // Binary data (indefinite length)
@@ -1086,8 +1106,16 @@ class binary_reader
             default:
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format_t::cbor, concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token), "binary"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(
+                        113,
+                        chars_read,
+                        exception_message(input_format_t::cbor,
+                                          concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token),
+                                          "binary"),
+                        nullptr));
             }
         }
     }
@@ -1098,8 +1126,7 @@ class binary_reader
     @param[in] tag_handler how CBOR tags should be treated
     @return whether array creation completed
     */
-    bool get_cbor_array(const std::size_t len,
+    bool get_cbor_array(const std::size_t len, const cbor_tag_handler_t tag_handler)
-                        const cbor_tag_handler_t tag_handler)
     {
         if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
         {
@@ -1136,8 +1163,7 @@ class binary_reader
     @param[in] tag_handler how CBOR tags should be treated
     @return whether object creation completed
     */
-    bool get_cbor_object(const std::size_t len,
+    bool get_cbor_object(const std::size_t len, const cbor_tag_handler_t tag_handler)
-                         const cbor_tag_handler_t tag_handler)
     {
         if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
         {
@@ -1557,8 +1583,10 @@ class binary_reader
             default:  // anything else
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(112, chars_read, exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
             }
         }
     }
@@ -1640,8 +1668,15 @@ class binary_reader
             default:
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format_t::msgpack, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(113,
+                                        chars_read,
+                                        exception_message(input_format_t::msgpack,
+                                                          concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token),
+                                                          "string"),
+                                        nullptr));
             }
         }
     }
@@ -1659,8 +1694,7 @@ class binary_reader
     bool get_msgpack_binary(binary_t& result)
     {
         // helper function to set the subtype
-        auto assign_and_return_true = [&result](std::int8_t subtype)
+        auto assign_and_return_true = [&result](std::int8_t subtype) {
-        {
             result.set_subtype(static_cast<std::uint8_t>(subtype));
             return true;
         };
@@ -1670,92 +1704,73 @@ class binary_reader
             case 0xC4:  // bin 8
             {
                 std::uint8_t len{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_binary(input_format_t::msgpack, len, result);
-                       get_binary(input_format_t::msgpack, len, result);
             }
 
             case 0xC5:  // bin 16
             {
                 std::uint16_t len{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_binary(input_format_t::msgpack, len, result);
-                       get_binary(input_format_t::msgpack, len, result);
             }
 
             case 0xC6:  // bin 32
             {
                 std::uint32_t len{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_binary(input_format_t::msgpack, len, result);
-                       get_binary(input_format_t::msgpack, len, result);
             }
 
             case 0xC7:  // ext 8
             {
                 std::uint8_t len{};
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_number(input_format_t::msgpack, subtype) &&
-                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xC8:  // ext 16
             {
                 std::uint16_t len{};
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_number(input_format_t::msgpack, subtype) &&
-                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xC9:  // ext 32
             {
                 std::uint32_t len{};
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
+                return get_number(input_format_t::msgpack, len) && get_number(input_format_t::msgpack, subtype) &&
-                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xD4:  // fixext 1
             {
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
+                return get_number(input_format_t::msgpack, subtype) && get_binary(input_format_t::msgpack, 1, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, 1, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xD5:  // fixext 2
             {
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
+                return get_number(input_format_t::msgpack, subtype) && get_binary(input_format_t::msgpack, 2, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, 2, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xD6:  // fixext 4
             {
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
+                return get_number(input_format_t::msgpack, subtype) && get_binary(input_format_t::msgpack, 4, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, 4, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xD7:  // fixext 8
             {
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
+                return get_number(input_format_t::msgpack, subtype) && get_binary(input_format_t::msgpack, 8, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, 8, result) &&
-                       assign_and_return_true(subtype);
             }
 
             case 0xD8:  // fixext 16
             {
                 std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
+                return get_number(input_format_t::msgpack, subtype) && get_binary(input_format_t::msgpack, 16, result) && assign_and_return_true(subtype);
-                       get_binary(input_format_t::msgpack, 16, result) &&
-                       assign_and_return_true(subtype);
             }
 
             default:           // LCOV_EXCL_LINE
@@ -2034,8 +2049,12 @@ class binary_reader
                 }
                 if (number < 0)
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                                            get_token_string(),
+                                            parse_error::create(113,
+                                                                chars_read,
+                                                                exception_message(input_format, "count in an optimized container must be positive", "size"),
+                                                                nullptr));
                 }
                 result = static_cast<std::size_t>(number);  // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
                 return true;
@@ -2050,8 +2069,12 @@ class binary_reader
                 }
                 if (number < 0)
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                                            get_token_string(),
+                                            parse_error::create(113,
+                                                                chars_read,
+                                                                exception_message(input_format, "count in an optimized container must be positive", "size"),
+                                                                nullptr));
                 }
                 result = static_cast<std::size_t>(number);
                 return true;
@@ -2066,8 +2089,12 @@ class binary_reader
                 }
                 if (number < 0)
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                                            get_token_string(),
+                                            parse_error::create(113,
+                                                                chars_read,
+                                                                exception_message(input_format, "count in an optimized container must be positive", "size"),
+                                                                nullptr));
                 }
                 result = static_cast<std::size_t>(number);
                 return true;
@@ -2082,13 +2109,18 @@ class binary_reader
                 }
                 if (number < 0)
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                                            get_token_string(),
+                                            parse_error::create(113,
+                                                                chars_read,
+                                                                exception_message(input_format, "count in an optimized container must be positive", "size"),
+                                                                nullptr));
                 }
                 if (!value_in_range_of<std::size_t>(number))
                 {
-                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                                            get_token_string(),
+                                            out_of_range::create(408, exception_message(input_format, "integer value overflow", "size"), nullptr));
                 }
                 result = static_cast<std::size_t>(number);
                 return true;
@@ -2137,8 +2169,9 @@ class binary_reader
                 }
                 if (!value_in_range_of<std::size_t>(number))
                 {
-                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                    return sax->parse_error(chars_read,
-                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                                            get_token_string(),
+                                            out_of_range::create(408, exception_message(input_format, "integer value overflow", "size"), nullptr));
                 }
                 result = detail::conditional_static_cast<std::size_t>(number);
                 return true;
@@ -2152,7 +2185,10 @@ class binary_reader
                 }
                 if (is_ndarray)  // ndarray dimensional vector can only contain integers, and can not embed another array
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
+                    return sax->parse_error(
+                        chars_read,
+                        get_token_string(),
+                        parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
                 }
                 std::vector<size_t> dim;
                 if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
@@ -2168,7 +2204,7 @@ class binary_reader
                 {
                     for (auto i : dim)  // test if any dimension in an ndarray is 0, if so, return a 1D empty container
                     {
-                        if ( i == 0 )
+                        if (i == 0)
                         {
                             result = 0;
                             return true;
@@ -2184,9 +2220,14 @@ class binary_reader
                     for (auto i : dim)
                     {
                         result *= i;
-                        if (result == 0 || result == npos) // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
+                        if (result == 0 ||
+                            result ==
+                                npos)  // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
                         {
-                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
+                            return sax->parse_error(
+                                chars_read,
+                                get_token_string(),
+                                out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
                         }
                         if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(static_cast<number_unsigned_t>(i))))
                         {
@@ -2239,12 +2280,17 @@ class binary_reader
         if (current == '$')
         {
             result.second = get();  // must not ignore 'N', because 'N' maybe the type
-            if (input_format == input_format_t::bjdata
+            if (input_format == input_format_t::bjdata &&
-                    && JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
+                JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(112,
+                                        chars_read,
+                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"),
+                                        nullptr));
             }
 
             if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "type")))
@@ -2260,8 +2306,13 @@ class binary_reader
                     return false;
                 }
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(112,
+                                        chars_read,
+                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"),
+                                        nullptr));
             }
 
             const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
@@ -2269,8 +2320,10 @@ class binary_reader
             {
                 if (inside_ndarray)
                 {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                    return sax->parse_error(
-                                            exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
+                        chars_read,
+                        get_token_string(),
+                        parse_error::create(112, chars_read, exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
                 }
                 result.second |= (1 << 8);  // use bit 8 to indicate ndarray, all UBJSON and BJData markers should be ASCII letters
             }
@@ -2282,8 +2335,10 @@ class binary_reader
             const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
             if (input_format == input_format_t::bjdata && is_ndarray)
             {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
+                    chars_read,
+                    get_token_string(),
+                    parse_error::create(112, chars_read, exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
             }
             return is_error;
         }
@@ -2399,27 +2454,22 @@ class binary_reader
                 // half-precision floating-point numbers in the C language
                 // is shown in Fig. 3.
                 const auto half = static_cast<unsigned int>((byte2 << 8u) + byte1);
-                const double val = [&half]
+                const double val = [&half] {
-                {
                     const int exp = (half >> 10u) & 0x1Fu;
                     const unsigned int mant = half & 0x3FFu;
-                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(0 <= exp && exp <= 32);
                     JSON_ASSERT(mant <= 1024);
                     switch (exp)
                     {
                         case 0:
                             return std::ldexp(mant, -24);
                         case 31:
-                            return (mant == 0)
+                            return (mant == 0) ? std::numeric_limits<double>::infinity() : std::numeric_limits<double>::quiet_NaN();
-                            ? std::numeric_limits<double>::infinity()
-                            : std::numeric_limits<double>::quiet_NaN();
                         default:
                             return std::ldexp(mant + 1024, exp - 25);
                     }
                 }();
-                return sax->number_float((half & 0x8000u) != 0
+                return sax->number_float((half & 0x8000u) != 0 ? static_cast<number_float_t>(-val) : static_cast<number_float_t>(val), "");
-                                         ? static_cast<number_float_t>(-val)
-                                         : static_cast<number_float_t>(val), "");
             }
 
             case 'd':
@@ -2449,8 +2499,14 @@ class binary_reader
                 if (JSON_HEDLEY_UNLIKELY(current > 127))
                 {
                     auto last_token = get_token_string();
-                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                    return sax->parse_error(
-                                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
+                        chars_read,
+                        last_token,
+                        parse_error::create(
+                            113,
+                            chars_read,
+                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"),
+                            nullptr));
                 }
                 string_t s(1, static_cast<typename string_t::value_type>(current));
                 return sax->string(s);
@@ -2472,7 +2528,9 @@ class binary_reader
                 break;
         }
         auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
+        return sax->parse_error(chars_read,
+                                last_token,
+                                parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
     }
 
     /*!
@@ -2492,16 +2550,17 @@ class binary_reader
         if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
         {
             size_and_type.second &= ~(static_cast<char_int_type>(1) << 8);  // use bit 8 to indicate ndarray, here we remove the bit to restore the type marker
-            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type & p, char_int_type t)
+            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type& p, char_int_type t) {
-            {
                 return p.first < t;
             });
             string_t key = "_ArrayType_";
             if (JSON_HEDLEY_UNLIKELY(it == bjd_types_map.end() || it->first != size_and_type.second))
             {
                 auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
+                    chars_read,
+                    last_token,
+                    parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
             }
 
             string_t type = it->second;  // sax->string() takes a reference
@@ -2516,7 +2575,7 @@ class binary_reader
             }
 
             key = "_ArrayData_";
-            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first) ))
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first)))
             {
                 return false;
             }
@@ -2598,8 +2657,13 @@ class binary_reader
         if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
         {
             auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+            return sax->parse_error(
-                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"), nullptr));
+                chars_read,
+                last_token,
+                parse_error::create(112,
+                                    chars_read,
+                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"),
+                                    nullptr));
         }
 
         string_t key;
@@ -2703,8 +2767,13 @@ class binary_reader
 
         if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
         {
-            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+            return sax->parse_error(
-                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+                chars_read,
+                number_string,
+                parse_error::create(115,
+                                    chars_read,
+                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"),
+                                    nullptr));
         }
 
         switch (result_number)
@@ -2730,8 +2799,14 @@ class binary_reader
             case token_type::end_of_input:
             case token_type::literal_or_value:
             default:
-                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                return sax->parse_error(
-                                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+                    chars_read,
+                    number_string,
+                    parse_error::create(
+                        115,
+                        chars_read,
+                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"),
+                        nullptr));
         }
     }
 
@@ -2762,8 +2837,7 @@ class binary_reader
         do
         {
             get();
-        }
+        } while (current == 'N');
-        while (current == 'N');
 
         return current;
     }
@@ -2827,9 +2901,7 @@ class binary_reader
           the input before we run out of string memory.
     */
     template<typename NumberType>
-    bool get_string(const input_format_t format,
+    bool get_string(const input_format_t format, const NumberType len, string_t& result)
-                    const NumberType len,
-                    string_t& result)
     {
         bool success = true;
         for (NumberType i = 0; i < len; i++)
@@ -2860,9 +2932,7 @@ class binary_reader
           the input before we run out of memory.
     */
     template<typename NumberType>
-    bool get_binary(const input_format_t format,
+    bool get_binary(const input_format_t format, const NumberType len, binary_t& result)
-                    const NumberType len,
-                    binary_t& result)
     {
         bool success = true;
         for (NumberType i = 0; i < len; i++)
@@ -2888,7 +2958,8 @@ class binary_reader
     {
         if (JSON_HEDLEY_UNLIKELY(current == char_traits<char_type>::eof()))
         {
-            return sax->parse_error(chars_read, "<end of file>",
+            return sax->parse_error(chars_read,
+                                    "<end of file>",
                                     parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
         }
         return true;
@@ -2899,9 +2970,10 @@ class binary_reader
     */
     std::string get_token_string() const
     {
-        std::array<char, 3> cr{{}};
+        std::array<char, 3> cr{ {} };
-        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        static_cast<void>(
-        return std::string{cr.data()};
+            (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current)));  // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        return std::string{ cr.data() };
     }
 
     /*!
@@ -2910,9 +2982,7 @@ class binary_reader
     @param[in] context  further context information
     @return a message string to use in the parse_error exceptions
     */
-    std::string exception_message(const input_format_t format,
+    std::string exception_message(const input_format_t format, const std::string& detail, const std::string& context) const
-                                  const std::string& detail,
-                                  const std::string& context) const
     {
         std::string error_msg = "syntax error while parsing ";
 
@@ -2968,41 +3038,37 @@ class binary_reader
     json_sax_t* sax = nullptr;
 
     // excluded markers in bjdata optimized type
-#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ \
+#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
-    make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
 
 #define JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_                                                                                                                 \
-    make_array<bjd_type>(                      \
+    make_array<bjd_type>(bjd_type{ 'C', "char" },                                                                                                              \
-    bjd_type{'C', "char"},                     \
+                         bjd_type{ 'D', "double" },                                                                                                            \
-    bjd_type{'D', "double"},                   \
+                         bjd_type{ 'I', "int16" },                                                                                                             \
-    bjd_type{'I', "int16"},                    \
+                         bjd_type{ 'L', "int64" },                                                                                                             \
-    bjd_type{'L', "int64"},                    \
+                         bjd_type{ 'M', "uint64" },                                                                                                            \
-    bjd_type{'M', "uint64"},                   \
+                         bjd_type{ 'U', "uint8" },                                                                                                             \
-    bjd_type{'U', "uint8"},                    \
+                         bjd_type{ 'd', "single" },                                                                                                            \
-    bjd_type{'d', "single"},                   \
+                         bjd_type{ 'i', "int8" },                                                                                                              \
-    bjd_type{'i', "int8"},                     \
+                         bjd_type{ 'l', "int32" },                                                                                                             \
-    bjd_type{'l', "int32"},                    \
+                         bjd_type{ 'm', "uint32" },                                                                                                            \
-    bjd_type{'m', "uint32"},                   \
+                         bjd_type{ 'u', "uint16" })
-    bjd_type{'u', "uint16"})
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     // lookup tables
     // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
-    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers =
+    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers = JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
-        JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
 
     using bjd_type = std::pair<char_int_type, string_t>;
     // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
-    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map =
+    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map = JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
-        JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
 
 #undef JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_
 #undef JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_
 };
 
 #ifndef JSON_HAS_CPP_17
-    template<typename BasicJsonType, typename InputAdapterType, typename SAX>
+template<typename BasicJsonType, typename InputAdapterType, typename SAX>
-    constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
+constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
 #endif
 
 }  // namespace detail

include/nlohmann/detail/input/input_adapters.hpp

@@ -32,7 +32,15 @@ namespace detail
 {
 
 /// the supported input formats
-enum class input_format_t { json, cbor, msgpack, ubjson, bson, bjdata };
+enum class input_format_t
+{
+    json,
+    cbor,
+    msgpack,
+    ubjson,
+    bson,
+    bjdata
+};
 
 ////////////////////
 // input adapters //
@@ -97,7 +105,8 @@ class input_stream_adapter
     }
 
     explicit input_stream_adapter(std::istream& i)
-        : is(&i), sb(i.rdbuf())
+      : is(&i)
+      , sb(i.rdbuf())
     {}
 
     // delete because of pointer members
@@ -106,7 +115,8 @@ class input_stream_adapter
     input_stream_adapter& operator=(input_stream_adapter&&) = delete;
 
     input_stream_adapter(input_stream_adapter&& rhs) noexcept
-        : is(rhs.is), sb(rhs.sb)
+      : is(rhs.is)
+      , sb(rhs.sb)
     {
         rhs.is = nullptr;
         rhs.sb = nullptr;
@@ -142,7 +152,8 @@ class iterator_input_adapter
     using char_type = typename std::iterator_traits<IteratorType>::value_type;
 
     iterator_input_adapter(IteratorType first, IteratorType last)
-        : current(std::move(first)), end(std::move(last))
+      : current(std::move(first))
+      , end(std::move(last))
     {}
 
     typename char_traits<char_type>::int_type get_character()
@@ -177,10 +188,8 @@ template<typename BaseInputAdapter>
 struct wide_string_input_helper<BaseInputAdapter, 4>
 {
     // UTF-32
-    static void fill_buffer(BaseInputAdapter& input,
+    static void
-                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+    fill_buffer(BaseInputAdapter& input, std::array<std::char_traits<char>::int_type, 4>& utf8_bytes, size_t& utf8_bytes_index, size_t& utf8_bytes_filled)
-                            size_t& utf8_bytes_index,
-                            size_t& utf8_bytes_filled)
     {
         utf8_bytes_index = 0;
 
@@ -235,10 +244,8 @@ template<typename BaseInputAdapter>
 struct wide_string_input_helper<BaseInputAdapter, 2>
 {
     // UTF-16
-    static void fill_buffer(BaseInputAdapter& input,
+    static void
-                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+    fill_buffer(BaseInputAdapter& input, std::array<std::char_traits<char>::int_type, 4>& utf8_bytes, size_t& utf8_bytes_index, size_t& utf8_bytes_filled)
-                            size_t& utf8_bytes_index,
-                            size_t& utf8_bytes_filled)
     {
         utf8_bytes_index = 0;
 
@@ -301,7 +308,8 @@ class wide_string_input_adapter
     using char_type = char;
 
     wide_string_input_adapter(BaseInputAdapter base)
-        : base_adapter(base) {}
+      : base_adapter(base)
+    {}
 
     typename std::char_traits<char>::int_type get_character() noexcept
     {
@@ -330,7 +338,7 @@ class wide_string_input_adapter
     }
 
     /// a buffer for UTF-8 bytes
-    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = { { 0, 0, 0, 0 } };
 
     /// index to the utf8_codes array for the next valid byte
     std::size_t utf8_bytes_index = 0;
@@ -394,19 +402,19 @@ using std::begin;
 using std::end;
 
 template<typename ContainerType, typename Enable = void>
-struct container_input_adapter_factory {};
+struct container_input_adapter_factory
+{};
 
 template<typename ContainerType>
-struct container_input_adapter_factory< ContainerType,
+struct container_input_adapter_factory<ContainerType, void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
-       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
+{
-       {
     using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
 
     static adapter_type create(const ContainerType& container)
-{
+    {
         return input_adapter(begin(container), end(container));
-}
+    }
-       };
+};
 
 }  // namespace container_input_adapter_factory_impl
 
@@ -437,13 +445,11 @@ inline input_stream_adapter input_adapter(std::istream&& stream)
 using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
 
 // Null-delimited strings, and the like.
-template < typename CharT,
+template<
-           typename std::enable_if <
+    typename CharT,
-               std::is_pointer<CharT>::value&&
+    typename std::enable_if<std::is_pointer<CharT>::value && !std::is_array<CharT>::value &&
-               !std::is_array<CharT>::value&&
+                                std::is_integral<typename std::remove_pointer<CharT>::type>::value && sizeof(typename std::remove_pointer<CharT>::type) == 1,
-               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                            int>::type = 0>
-               sizeof(typename std::remove_pointer<CharT>::type) == 1,
-               int >::type = 0 >
 contiguous_bytes_input_adapter input_adapter(CharT b)
 {
     auto length = std::strlen(reinterpret_cast<const char*>(b));
@@ -452,7 +458,8 @@ contiguous_bytes_input_adapter input_adapter(CharT b)
 }
 
 template<typename T, std::size_t N>
-auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+auto input_adapter(T (&array)[N])
+    -> decltype(input_adapter(array, array + N))  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
 {
     return input_adapter(array, array + N);
 }
@@ -463,21 +470,20 @@ auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) /
 class span_input_adapter
 {
   public:
-    template < typename CharT,
+    template<typename CharT,
-               typename std::enable_if <
+             typename std::enable_if<std::is_pointer<CharT>::value && std::is_integral<typename std::remove_pointer<CharT>::type>::value &&
-                   std::is_pointer<CharT>::value&&
-                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
                                          sizeof(typename std::remove_pointer<CharT>::type) == 1,
-                   int >::type = 0 >
-    span_input_adapter(CharT b, std::size_t l)
-        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
-
-    template<class IteratorType,
-             typename std::enable_if<
-                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
                                      int>::type = 0>
+    span_input_adapter(CharT b, std::size_t l)
+      : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l)
+    {}
+
+    template<
+        class IteratorType,
+        typename std::enable_if<std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value, int>::type = 0>
     span_input_adapter(IteratorType first, IteratorType last)
-        : ia(input_adapter(first, last)) {}
+      : ia(input_adapter(first, last))
+    {}
 
     contiguous_bytes_input_adapter&& get()
     {

include/nlohmann/detail/input/json_sax.hpp

@@ -130,9 +130,7 @@ struct json_sax
     @param[in] ex          an exception object describing the error
     @return whether parsing should proceed (must return false)
     */
-    virtual bool parse_error(std::size_t position,
+    virtual bool parse_error(std::size_t position, const std::string& last_token, const detail::exception& ex) = 0;
-                             const std::string& last_token,
-                             const detail::exception& ex) = 0;
 
     json_sax() = default;
     json_sax(const json_sax&) = default;
@@ -173,7 +171,8 @@ class json_sax_dom_parser
     @param[in] allow_exceptions_  whether parse errors yield exceptions
     */
     explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true)
-        : root(r), allow_exceptions(allow_exceptions_)
+      : root(r)
+      , allow_exceptions(allow_exceptions_)
     {}
 
     // make class move-only
@@ -280,8 +279,7 @@ class json_sax_dom_parser
     }
 
     template<class Exception>
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const Exception& ex)
-                     const Exception& ex)
     {
         errored = true;
         static_cast<void>(ex);
@@ -305,8 +303,7 @@ class json_sax_dom_parser
                object to which we can add elements
     */
     template<typename Value>
-    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_RETURNS_NON_NULL BasicJsonType* handle_value(Value&& v)
-    BasicJsonType* handle_value(Value&& v)
     {
         if (ref_stack.empty())
         {
@@ -331,7 +328,7 @@ class json_sax_dom_parser
     /// the parsed JSON value
     BasicJsonType& root;
     /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack {};
+    std::vector<BasicJsonType*> ref_stack{};
     /// helper to hold the reference for the next object element
     BasicJsonType* object_element = nullptr;
     /// whether a syntax error occurred
@@ -352,10 +349,10 @@ class json_sax_dom_callback_parser
     using parser_callback_t = typename BasicJsonType::parser_callback_t;
     using parse_event_t = typename BasicJsonType::parse_event_t;
 
-    json_sax_dom_callback_parser(BasicJsonType& r,
+    json_sax_dom_callback_parser(BasicJsonType& r, const parser_callback_t cb, const bool allow_exceptions_ = true)
-                                 const parser_callback_t cb,
+      : root(r)
-                                 const bool allow_exceptions_ = true)
+      , callback(cb)
-        : root(r), callback(cb), allow_exceptions(allow_exceptions_)
+      , allow_exceptions(allow_exceptions_)
     {
         keep_stack.push_back(true);
     }
@@ -530,8 +527,7 @@ class json_sax_dom_callback_parser
     }
 
     template<class Exception>
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const Exception& ex)
-                     const Exception& ex)
     {
         errored = true;
         static_cast<void>(ex);
@@ -572,7 +568,7 @@ class json_sax_dom_callback_parser
         // container
         if (!keep_stack.back())
         {
-            return {false, nullptr};
+            return { false, nullptr };
         }
 
         // create value
@@ -584,20 +580,20 @@ class json_sax_dom_callback_parser
         // do not handle this value if we just learnt it shall be discarded
         if (!keep)
         {
-            return {false, nullptr};
+            return { false, nullptr };
         }
 
         if (ref_stack.empty())
         {
             root = std::move(value);
-            return {true, & root};
+            return { true, &root };
         }
 
         // skip this value if we already decided to skip the parent
         // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
         if (!ref_stack.back())
         {
-            return {false, nullptr};
+            return { false, nullptr };
         }
 
         // we now only expect arrays and objects
@@ -607,7 +603,7 @@ class json_sax_dom_callback_parser
         if (ref_stack.back()->is_array())
         {
             ref_stack.back()->m_data.m_value.array->emplace_back(std::move(value));
-            return {true, & (ref_stack.back()->m_data.m_value.array->back())};
+            return { true, &(ref_stack.back()->m_data.m_value.array->back()) };
         }
 
         // object
@@ -619,22 +615,22 @@ class json_sax_dom_callback_parser
 
         if (!store_element)
         {
-            return {false, nullptr};
+            return { false, nullptr };
         }
 
         JSON_ASSERT(object_element);
         *object_element = std::move(value);
-        return {true, object_element};
+        return { true, object_element };
     }
 
     /// the parsed JSON value
     BasicJsonType& root;
     /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack {};
+    std::vector<BasicJsonType*> ref_stack{};
     /// stack to manage which values to keep
-    std::vector<bool> keep_stack {};
+    std::vector<bool> keep_stack{};
     /// stack to manage which object keys to keep
-    std::vector<bool> key_keep_stack {};
+    std::vector<bool> key_keep_stack{};
     /// helper to hold the reference for the next object element
     BasicJsonType* object_element = nullptr;
     /// whether a syntax error occurred

include/nlohmann/detail/input/lexer.hpp

@@ -745,7 +745,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xDE:
                 case 0xDF:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({ 0x80, 0xBF })))
                     {
                         return token_type::parse_error;
                     }
@@ -755,7 +755,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
                 case 0xE0:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0xA0, 0xBF, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -779,7 +779,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xEE:
                 case 0xEF:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0x80, 0xBF, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -789,7 +789,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+D000..U+D7FF: bytes ED 80..9F 80..BF
                 case 0xED:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0x80, 0x9F, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -799,7 +799,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
                 case 0xF0:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -811,7 +811,7 @@ class lexer : public lexer_base<BasicJsonType>
                 case 0xF2:
                 case 0xF3:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -821,7 +821,7 @@ class lexer : public lexer_base<BasicJsonType>
                 // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
                 case 0xF4:
                 {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({ 0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF }))))
                     {
                         return token_type::parse_error;
                     }
@@ -1185,8 +1185,7 @@ scan_number_exponent:
 
             default:
             {
-                error_message =
+                error_message = "invalid number; expected '+', '-', or digit after exponent";
-                    "invalid number; expected '+', '-', or digit after exponent";
                 return token_type::parse_error;
             }
         }
@@ -1298,8 +1297,7 @@ scan_number_done:
     @param[in] return_type   the token type to return on success
     */
     JSON_HEDLEY_NON_NULL(2)
-    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+    token_type scan_literal(const char_type* literal_text, const std::size_t length, token_type return_type)
-                            token_type return_type)
     {
         JSON_ASSERT(char_traits<char_type>::to_char_type(current) == literal_text[0]);
         for (std::size_t i = 1; i < length; ++i)
@@ -1455,8 +1453,9 @@ scan_number_done:
             if (static_cast<unsigned char>(c) <= '\x1F')
             {
                 // escape control characters
-                std::array<char, 9> cs{{}};
+                std::array<char, 9> cs{ {} };
-                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                static_cast<void>((  // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                    std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c)));
                 result += cs.data();
             }
             else
@@ -1503,8 +1502,7 @@ scan_number_done:
         do
         {
             get();
-        }
+        } while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
-        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
     }
 
     token_type scan()
@@ -1550,17 +1548,25 @@ scan_number_done:
             // literals
             case 't':
             {
-                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
+                std::array<char_type, 4> true_literal = {
+                    { static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e') }
+                };
                 return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
             }
             case 'f':
             {
-                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
+                std::array<char_type, 5> false_literal = { { static_cast<char_type>('f'),
+                                                             static_cast<char_type>('a'),
+                                                             static_cast<char_type>('l'),
+                                                             static_cast<char_type>('s'),
+                                                             static_cast<char_type>('e') } };
                 return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
             }
             case 'n':
             {
-                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
+                std::array<char_type, 4> null_literal = {
+                    { static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l') }
+                };
                 return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
             }
 
@@ -1609,13 +1615,13 @@ scan_number_done:
     bool next_unget = false;
 
     /// the start position of the current token
-    position_t position {};
+    position_t position{};
 
     /// raw input token string (for error messages)
-    std::vector<char_type> token_string {};
+    std::vector<char_type> token_string{};
 
     /// buffer for variable-length tokens (numbers, strings)
-    string_t token_buffer {};
+    string_t token_buffer{};
 
     /// a description of occurred lexer errors
     const char* error_message = "";

include/nlohmann/detail/input/parser.hpp

@@ -48,8 +48,7 @@ enum class parse_event_t : std::uint8_t
 };
 
 template<typename BasicJsonType>
-using parser_callback_t =
+using parser_callback_t = std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
-    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
 
 /*!
 @brief syntax analysis
@@ -102,8 +101,7 @@ class parser
             {
                 sdp.parse_error(m_lexer.get_position(),
                                 m_lexer.get_token_string(),
-                                parse_error::create(101, m_lexer.get_position(),
+                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
-                                                    exception_message(token_type::end_of_input, "value"), nullptr));
             }
 
             // in case of an error, return discarded value
@@ -160,7 +158,7 @@ class parser
     JSON_HEDLEY_NON_NULL(2)
     bool sax_parse(SAX* sax, const bool strict = true)
     {
-        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType>{};
         const bool result = sax_parse_internal(sax);
 
         // strict mode: next byte must be EOF
@@ -212,7 +210,8 @@ class parser
                         // parse key
                         if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
                         {
-                            return sax->parse_error(m_lexer.get_position(),
+                            return sax->parse_error(
+                                m_lexer.get_position(),
                                 m_lexer.get_token_string(),
                                 parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
                         }
@@ -224,7 +223,8 @@ class parser
                         // parse separator (:)
                         if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
                         {
-                            return sax->parse_error(m_lexer.get_position(),
+                            return sax->parse_error(
+                                m_lexer.get_position(),
                                 m_lexer.get_token_string(),
                                 parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
                         }
@@ -337,7 +337,8 @@ class parser
                     case token_type::parse_error:
                     {
                         // using "uninitialized" to avoid "expected" message
-                        return sax->parse_error(m_lexer.get_position(),
+                        return sax->parse_error(
+                            m_lexer.get_position(),
                             m_lexer.get_token_string(),
                             parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), nullptr));
                     }
@@ -345,13 +346,17 @@ class parser
                     {
                         if (JSON_HEDLEY_UNLIKELY(m_lexer.get_position().chars_read_total == 1))
                         {
-                            return sax->parse_error(m_lexer.get_position(),
+                            return sax->parse_error(
+                                m_lexer.get_position(),
                                 m_lexer.get_token_string(),
-                                                    parse_error::create(101, m_lexer.get_position(),
+                                parse_error::create(101,
-                                                            "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+                                                    m_lexer.get_position(),
+                                                    "attempting to parse an empty input; check that your input string or stream contains the expected JSON",
+                                                    nullptr));
                         }
 
-                        return sax->parse_error(m_lexer.get_position(),
+                        return sax->parse_error(
+                            m_lexer.get_position(),
                             m_lexer.get_token_string(),
                             parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
                     }
@@ -363,7 +368,8 @@ class parser
                     case token_type::literal_or_value:
                     default:  // the last token was unexpected
                     {
-                        return sax->parse_error(m_lexer.get_position(),
+                        return sax->parse_error(
+                            m_lexer.get_position(),
                             m_lexer.get_token_string(),
                             parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
                     }
@@ -422,7 +428,8 @@ class parser
                 // parse key
                 if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
                 {
-                    return sax->parse_error(m_lexer.get_position(),
+                    return sax->parse_error(
+                        m_lexer.get_position(),
                         m_lexer.get_token_string(),
                         parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
                 }
@@ -435,7 +442,8 @@ class parser
                 // parse separator (:)
                 if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
                 {
-                    return sax->parse_error(m_lexer.get_position(),
+                    return sax->parse_error(
+                        m_lexer.get_position(),
                         m_lexer.get_token_string(),
                         parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
                 }
@@ -488,8 +496,7 @@ class parser
 
         if (last_token == token_type::parse_error)
         {
-            error_msg += concat(m_lexer.get_error_message(), "; last read: '",
+            error_msg += concat(m_lexer.get_error_message(), "; last read: '", m_lexer.get_token_string(), '\'');
-                                m_lexer.get_token_string(), '\'');
         }
         else
         {

include/nlohmann/detail/iterators/internal_iterator.hpp

@@ -21,14 +21,15 @@ namespace detail
 @note This structure could easily be a union, but MSVC currently does not allow
 unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
 */
-template<typename BasicJsonType> struct internal_iterator
+template<typename BasicJsonType>
+struct internal_iterator
 {
     /// iterator for JSON objects
-    typename BasicJsonType::object_t::iterator object_iterator {};
+    typename BasicJsonType::object_t::iterator object_iterator{};
     /// iterator for JSON arrays
-    typename BasicJsonType::array_t::iterator array_iterator {};
+    typename BasicJsonType::array_t::iterator array_iterator{};
     /// generic iterator for all other types
-    primitive_iterator_t primitive_iterator {};
+    primitive_iterator_t primitive_iterator{};
 };
 
 }  // namespace detail

include/nlohmann/detail/iterators/iter_impl.hpp

@@ -24,8 +24,10 @@ namespace detail
 {
 
 // forward declare, to be able to friend it later on
-template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType>
-template<typename IteratorType> class iteration_proxy_value;
+class iteration_proxy;
+template<typename IteratorType>
+class iteration_proxy_value;
 
 /*!
 @brief a template for a bidirectional iterator for the @ref basic_json class
@@ -47,7 +49,8 @@ template<typename BasicJsonType>
 class iter_impl  // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
 {
     /// the iterator with BasicJsonType of different const-ness
-    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    using other_iter_impl =
+        iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
     /// allow basic_json to access private members
     friend other_iter_impl;
     friend BasicJsonType;
@@ -57,11 +60,10 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     using object_t = typename BasicJsonType::object_t;
     using array_t = typename BasicJsonType::array_t;
     // make sure BasicJsonType is basic_json or const basic_json
-    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value, "iter_impl only accepts (const) basic_json");
-                  "iter_impl only accepts (const) basic_json");
     // superficial check for the LegacyBidirectionalIterator named requirement
-    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value
+    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value &&
-                  &&  std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
+                      std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
                   "basic_json iterator assumes array and object type iterators satisfy the LegacyBidirectionalIterator named requirement.");
 
   public:
@@ -77,14 +79,11 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     /// a type to represent differences between iterators
     using difference_type = typename BasicJsonType::difference_type;
     /// defines a pointer to the type iterated over (value_type)
-    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+    using pointer =
-          typename BasicJsonType::const_pointer,
+        typename std::conditional<std::is_const<BasicJsonType>::value, typename BasicJsonType::const_pointer, typename BasicJsonType::pointer>::type;
-          typename BasicJsonType::pointer>::type;
     /// defines a reference to the type iterated over (value_type)
     using reference =
-        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename std::conditional<std::is_const<BasicJsonType>::value, typename BasicJsonType::const_reference, typename BasicJsonType::reference>::type;
-        typename BasicJsonType::const_reference,
-        typename BasicJsonType::reference>::type;
 
     iter_impl() = default;
     ~iter_impl() = default;
@@ -97,7 +96,8 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @pre object != nullptr
     @post The iterator is initialized; i.e. `m_object != nullptr`.
     */
-    explicit iter_impl(pointer object) noexcept : m_object(object)
+    explicit iter_impl(pointer object) noexcept
+      : m_object(object)
     {
         JSON_ASSERT(m_object != nullptr);
 
@@ -148,7 +148,8 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
           information refer to: https://github.com/nlohmann/json/issues/1608
     */
     iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
-        : m_object(other.m_object), m_it(other.m_it)
+      : m_object(other.m_object)
+      , m_it(other.m_it)
     {}
 
     /*!
@@ -173,7 +174,8 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @note It is not checked whether @a other is initialized.
     */
     iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
-        : m_object(other.m_object), m_it(other.m_it)
+      : m_object(other.m_object)
+      , m_it(other.m_it)
     {}
 
     /*!
@@ -189,7 +191,7 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
         return *this;
     }
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     /*!
     @brief set the iterator to the first value
     @pre The iterator is initialized; i.e. `m_object != nullptr`.
@@ -363,7 +365,7 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @brief post-increment (it++)
     @pre The iterator is initialized; i.e. `m_object != nullptr`.
     */
-    iter_impl operator++(int)& // NOLINT(cert-dcl21-cpp)
+    iter_impl operator++(int) &  // NOLINT(cert-dcl21-cpp)
     {
         auto result = *this;
         ++(*this);
@@ -414,7 +416,7 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @brief post-decrement (it--)
     @pre The iterator is initialized; i.e. `m_object != nullptr`.
     */
-    iter_impl operator--(int)& // NOLINT(cert-dcl21-cpp)
+    iter_impl operator--(int) &  // NOLINT(cert-dcl21-cpp)
     {
         auto result = *this;
         --(*this);
@@ -465,7 +467,8 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @brief comparison: equal
     @pre The iterator is initialized; i.e. `m_object != nullptr`.
     */
-    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    template<typename IterImpl,
+             detail::enable_if_t<(std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t> = nullptr>
     bool operator==(const IterImpl& other) const
     {
         // if objects are not the same, the comparison is undefined
@@ -501,7 +504,8 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     @brief comparison: not equal
     @pre The iterator is initialized; i.e. `m_object != nullptr`.
     */
-    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    template<typename IterImpl,
+             detail::enable_if_t<(std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t> = nullptr>
     bool operator!=(const IterImpl& other) const
     {
         return !operator==(other);
@@ -548,7 +552,7 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
     */
     bool operator<=(const iter_impl& other) const
     {
-        return !other.operator < (*this);
+        return !other.operator<(*this);
     }
 
     /*!
@@ -740,11 +744,11 @@ class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-speci
         return operator*();
     }
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     /// associated JSON instance
     pointer m_object = nullptr;
     /// the actual iterator of the associated instance
-    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it{};
 };
 
 }  // namespace detail

include/nlohmann/detail/iterators/iteration_proxy.hpp

@@ -27,21 +27,22 @@ namespace detail
 {
 
 template<typename string_type>
-void int_to_string( string_type& target, std::size_t value )
+void int_to_string(string_type& target, std::size_t value)
 {
     // For ADL
     using std::to_string;
     target = to_string(value);
 }
-template<typename IteratorType> class iteration_proxy_value
+template<typename IteratorType>
+class iteration_proxy_value
 {
   public:
     using difference_type = std::ptrdiff_t;
     using value_type = iteration_proxy_value;
-    using pointer = value_type *;
+    using pointer = value_type*;
-    using reference = value_type &;
+    using reference = value_type&;
     using iterator_category = std::input_iterator_tag;
-    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+    using string_type = typename std::remove_cv<typename std::remove_reference<decltype(std::declval<IteratorType>().key())>::type>::type;
 
   private:
     /// the iterator
@@ -57,9 +58,8 @@ template<typename IteratorType> class iteration_proxy_value
 
   public:
     explicit iteration_proxy_value() = default;
-    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0)
+    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0) noexcept(std::is_nothrow_move_constructible<IteratorType>::value &&
-    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+                                                                                           std::is_nothrow_default_constructible<string_type>::value)
-             && std::is_nothrow_default_constructible<string_type>::value)
       : anchor(std::move(it))
       , array_index(array_index_)
     {}
@@ -67,12 +67,12 @@ template<typename IteratorType> class iteration_proxy_value
     iteration_proxy_value(iteration_proxy_value const&) = default;
     iteration_proxy_value& operator=(iteration_proxy_value const&) = default;
     // older GCCs are a bit fussy and require explicit noexcept specifiers on defaulted functions
-    iteration_proxy_value(iteration_proxy_value&&)
+    iteration_proxy_value(iteration_proxy_value&&) noexcept(std::is_nothrow_move_constructible<IteratorType>::value &&
-    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+                                                            std::is_nothrow_move_constructible<string_type>::value) =
-             && std::is_nothrow_move_constructible<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+        default;  // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
-    iteration_proxy_value& operator=(iteration_proxy_value&&)
+    iteration_proxy_value& operator=(iteration_proxy_value&&) noexcept(std::is_nothrow_move_assignable<IteratorType>::value &&
-    noexcept(std::is_nothrow_move_assignable<IteratorType>::value
+                                                                       std::is_nothrow_move_assignable<string_type>::value) =
-             && std::is_nothrow_move_assignable<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+        default;  // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
     ~iteration_proxy_value() = default;
 
     /// dereference operator (needed for range-based for)
@@ -90,7 +90,7 @@ template<typename IteratorType> class iteration_proxy_value
         return *this;
     }
 
-    iteration_proxy_value operator++(int)& // NOLINT(cert-dcl21-cpp)
+    iteration_proxy_value operator++(int) &  // NOLINT(cert-dcl21-cpp)
     {
         auto tmp = iteration_proxy_value(anchor, array_index);
         ++anchor;
@@ -122,7 +122,7 @@ template<typename IteratorType> class iteration_proxy_value
             {
                 if (array_index != array_index_last)
                 {
-                    int_to_string( array_index_str, array_index );
+                    int_to_string(array_index_str, array_index);
                     array_index_last = array_index;
                 }
                 return array_index_str;
@@ -154,7 +154,8 @@ template<typename IteratorType> class iteration_proxy_value
 };
 
 /// proxy class for the items() function
-template<typename IteratorType> class iteration_proxy
+template<typename IteratorType>
+class iteration_proxy
 {
   private:
     /// the container to iterate
@@ -165,7 +166,8 @@ template<typename IteratorType> class iteration_proxy
 
     /// construct iteration proxy from a container
     explicit iteration_proxy(typename IteratorType::reference cont) noexcept
-        : container(&cont) {}
+      : container(&cont)
+    {}
 
     iteration_proxy(iteration_proxy const&) = default;
     iteration_proxy& operator=(iteration_proxy const&) = default;
@@ -220,15 +222,14 @@ namespace std
 #endif
 template<typename IteratorType>
 class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>>  // NOLINT(cert-dcl58-cpp)
-            : public std::integral_constant<std::size_t, 2> {};
+  : public std::integral_constant<std::size_t, 2>
+{};
 
 template<std::size_t N, typename IteratorType>
-class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType>>  // NOLINT(cert-dcl58-cpp)
 {
   public:
-    using type = decltype(
+    using type = decltype(get<N>(std::declval<::nlohmann::detail::iteration_proxy_value<IteratorType>>()));
-                     get<N>(std::declval <
-                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
 };
 #if defined(__clang__)
     #pragma clang diagnostic pop
@@ -237,6 +238,6 @@ class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >>
 }  // namespace std
 
 #if JSON_HAS_RANGES
-    template <typename IteratorType>
+template<typename IteratorType>
-    inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
+inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
 #endif

include/nlohmann/detail/iterators/iterator_traits.hpp

@@ -11,21 +11,21 @@
 #include <iterator>  // random_access_iterator_tag
 
 #include <nlohmann/detail/abi_macros.hpp>
-#include <nlohmann/detail/meta/void_t.hpp>
 #include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/void_t.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
 {
 
 template<typename It, typename = void>
-struct iterator_types {};
+struct iterator_types
+{};
 
 template<typename It>
-struct iterator_types <
+struct iterator_types<
     It,
-    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer, typename It::reference, typename It::iterator_category>>
-    typename It::reference, typename It::iterator_category >>
 {
     using difference_type = typename It::difference_type;
     using value_type = typename It::value_type;
@@ -38,14 +38,11 @@ struct iterator_types <
 // doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
 template<typename T, typename = void>
 struct iterator_traits
-{
+{};
-};
 
 template<typename T>
-struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+struct iterator_traits<T, enable_if_t<!std::is_pointer<T>::value>> : iterator_types<T>
-            : iterator_types<T>
+{};
-{
-};
 
 template<typename T>
 struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>

include/nlohmann/detail/iterators/json_reverse_iterator.hpp

@@ -52,13 +52,16 @@ class json_reverse_iterator : public std::reverse_iterator<Base>
 
     /// create reverse iterator from iterator
     explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
-        : base_iterator(it) {}
+      : base_iterator(it)
+    {}
 
     /// create reverse iterator from base class
-    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+    explicit json_reverse_iterator(const base_iterator& it) noexcept
+      : base_iterator(it)
+    {}
 
     /// post-increment (it++)
-    json_reverse_iterator operator++(int)& // NOLINT(cert-dcl21-cpp)
+    json_reverse_iterator operator++(int) &  // NOLINT(cert-dcl21-cpp)
     {
         return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
     }
@@ -70,7 +73,7 @@ class json_reverse_iterator : public std::reverse_iterator<Base>
     }
 
     /// post-decrement (it--)
-    json_reverse_iterator operator--(int)& // NOLINT(cert-dcl21-cpp)
+    json_reverse_iterator operator--(int) &  // NOLINT(cert-dcl21-cpp)
     {
         return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
     }
@@ -122,7 +125,7 @@ class json_reverse_iterator : public std::reverse_iterator<Base>
     reference value() const
     {
         auto it = --this->base();
-        return it.operator * ();
+        return it.operator*();
     }
 };
 

include/nlohmann/detail/iterators/primitive_iterator.hpp

@@ -33,7 +33,7 @@ class primitive_iterator_t
     static constexpr difference_type begin_value = 0;
     static constexpr difference_type end_value = begin_value + 1;
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     /// iterator as signed integer type
     difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
 
@@ -95,7 +95,7 @@ class primitive_iterator_t
         return *this;
     }
 
-    primitive_iterator_t operator++(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    primitive_iterator_t operator++(int) & noexcept  // NOLINT(cert-dcl21-cpp)
     {
         auto result = *this;
         ++m_it;
@@ -108,7 +108,7 @@ class primitive_iterator_t
         return *this;
     }
 
-    primitive_iterator_t operator--(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    primitive_iterator_t operator--(int) & noexcept  // NOLINT(cert-dcl21-cpp)
     {
         auto result = *this;
         --m_it;

include/nlohmann/detail/json_custom_base_class.hpp

@@ -26,14 +26,11 @@ of @ref basic_json do not require complex case distinctions
 By default, this class is used because it is empty and thus has no effect
 on the behavior of @ref basic_json.
 */
-struct json_default_base {};
+struct json_default_base
+{};
 
 template<class T>
-using json_base_class = typename std::conditional <
+using json_base_class = typename std::conditional<std::is_same<T, void>::value, json_default_base, T>::type;
-                        std::is_same<T, void>::value,
-                        json_default_base,
-                        T
-                        >::type;
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/json_pointer.hpp

@@ -67,10 +67,7 @@ class json_pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
     string_t to_string() const
     {
-        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(), string_t{}, [](const string_t& a, const string_t& b) {
-                               string_t{},
-                               [](const string_t& a, const string_t& b)
-        {
             return detail::concat(a, '/', detail::escape(b));
         });
     }
@@ -97,9 +94,7 @@ class json_pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
     json_pointer& operator/=(const json_pointer& ptr)
     {
-        reference_tokens.insert(reference_tokens.end(),
+        reference_tokens.insert(reference_tokens.end(), ptr.reference_tokens.begin(), ptr.reference_tokens.end());
-                                ptr.reference_tokens.begin(),
-                                ptr.reference_tokens.end());
         return *this;
     }
 
@@ -120,8 +115,7 @@ class json_pointer
 
     /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
-    friend json_pointer operator/(const json_pointer& lhs,
+    friend json_pointer operator/(const json_pointer& lhs, const json_pointer& rhs)
-                                  const json_pointer& rhs)
     {
         return json_pointer(lhs) /= rhs;
     }
@@ -248,7 +242,7 @@ class json_pointer
         return static_cast<size_type>(res);
     }
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     json_pointer top() const
     {
         if (JSON_HEDLEY_UNLIKELY(empty()))
@@ -257,7 +251,7 @@ class json_pointer
         }
 
         json_pointer result = *this;
-        result.reference_tokens = {reference_tokens[0]};
+        result.reference_tokens = { reference_tokens[0] };
         return result;
     }
 
@@ -359,17 +353,12 @@ class json_pointer
             if (ptr->is_null())
             {
                 // check if reference token is a number
-                const bool nums =
+                const bool nums = std::all_of(reference_token.begin(), reference_token.end(), [](const unsigned char x) {
-                    std::all_of(reference_token.begin(), reference_token.end(),
-                                [](const unsigned char x)
-                {
                     return std::isdigit(x);
                 });
 
                 // change value to array for numbers or "-" or to object otherwise
-                *ptr = (nums || reference_token == "-")
+                *ptr = (nums || reference_token == "-") ? detail::value_t::array : detail::value_t::object;
-                       ? detail::value_t::array
-                       : detail::value_t::object;
             }
 
             switch (ptr->type())
@@ -437,9 +426,10 @@ class json_pointer
                     if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
                     {
                         // "-" always fails the range check
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                        JSON_THROW(detail::out_of_range::create(
-                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                            402,
-                                ") is out of range"), ptr));
+                            detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"),
+                            ptr));
                     }
 
                     // note: at performs range check
@@ -495,7 +485,10 @@ class json_pointer
                     if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
                     {
                         // "-" cannot be used for const access
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"), ptr));
+                        JSON_THROW(detail::out_of_range::create(
+                            402,
+                            detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"),
+                            ptr));
                     }
 
                     // use unchecked array access
@@ -544,9 +537,10 @@ class json_pointer
                     if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
                     {
                         // "-" always fails the range check
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                        JSON_THROW(detail::out_of_range::create(
-                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                            402,
-                                ") is out of range"), ptr));
+                            detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"),
+                            ptr));
                     }
 
                     // note: at performs range check
@@ -676,7 +670,8 @@ class json_pointer
         // check if nonempty reference string begins with slash
         if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
         {
-            JSON_THROW(detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
+            JSON_THROW(
+                detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
         }
 
         // extract the reference tokens:
@@ -700,16 +695,12 @@ class json_pointer
             auto reference_token = reference_string.substr(start, slash - start);
 
             // check reference tokens are properly escaped
-            for (std::size_t pos = reference_token.find_first_of('~');
+            for (std::size_t pos = reference_token.find_first_of('~'); pos != string_t::npos; pos = reference_token.find_first_of('~', pos + 1))
-                    pos != string_t::npos;
-                    pos = reference_token.find_first_of('~', pos + 1))
             {
                 JSON_ASSERT(reference_token[pos] == '~');
 
                 // ~ must be followed by 0 or 1
-                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 || (reference_token[pos + 1] != '0' && reference_token[pos + 1] != '1')))
-                                         (reference_token[pos + 1] != '0' &&
-                                          reference_token[pos + 1] != '1')))
                 {
                     JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", nullptr));
                 }
@@ -732,9 +723,7 @@ class json_pointer
     @note Empty objects or arrays are flattened to `null`.
     */
     template<typename BasicJsonType>
-    static void flatten(const string_t& reference_string,
+    static void flatten(const string_t& reference_string, const BasicJsonType& value, BasicJsonType& result)
-                        const BasicJsonType& value,
-                        BasicJsonType& result)
     {
         switch (value.type())
         {
@@ -750,8 +739,7 @@ class json_pointer
                     // iterate array and use index as reference string
                     for (std::size_t i = 0; i < value.m_data.m_value.array->size(); ++i)
                     {
-                        flatten(detail::concat(reference_string, '/', std::to_string(i)),
+                        flatten(detail::concat(reference_string, '/', std::to_string(i)), value.m_data.m_value.array->operator[](i), result);
-                                value.m_data.m_value.array->operator[](i), result);
                     }
                 }
                 break;
@@ -803,8 +791,7 @@ class json_pointer
     @throw type_error.313  if value cannot be unflattened
     */
     template<typename BasicJsonType>
-    static BasicJsonType
+    static BasicJsonType unflatten(const BasicJsonType& value)
-    unflatten(const BasicJsonType& value)
     {
         if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
         {
@@ -839,7 +826,7 @@ class json_pointer
         return result;
     }
 
-    json_pointer<string_t> convert()&&
+    json_pointer<string_t> convert() &&
     {
         json_pointer<string_t> result;
         result.reference_tokens = std::move(reference_tokens);
@@ -875,49 +862,42 @@ class json_pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
     template<typename RefStringTypeLhs, typename RefStringTypeRhs>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
 
     /// @brief compares JSON pointer and string for equality
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
     template<typename RefStringTypeLhs, typename StringType>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs, const StringType& rhs);
-                           const StringType& rhs);
 
     /// @brief compares string and JSON pointer for equality
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
     template<typename RefStringTypeRhs, typename StringType>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const StringType& lhs,
+    friend bool operator==(const StringType& lhs, const json_pointer<RefStringTypeRhs>& rhs);
-                           const json_pointer<RefStringTypeRhs>& rhs);
 
     /// @brief compares two JSON pointers for inequality
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
     template<typename RefStringTypeLhs, typename RefStringTypeRhs>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
 
     /// @brief compares JSON pointer and string for inequality
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
     template<typename RefStringTypeLhs, typename StringType>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs, const StringType& rhs);
-                           const StringType& rhs);
 
     /// @brief compares string and JSON pointer for inequality
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
     template<typename RefStringTypeRhs, typename StringType>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const StringType& lhs,
+    friend bool operator!=(const StringType& lhs, const json_pointer<RefStringTypeRhs>& rhs);
-                           const json_pointer<RefStringTypeRhs>& rhs);
 
     /// @brief compares two JSON pointer for less-than
     template<typename RefStringTypeLhs, typename RefStringTypeRhs>
     // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-                          const json_pointer<RefStringTypeRhs>& rhs) noexcept;
 #endif
 
   private:
@@ -928,58 +908,47 @@ class json_pointer
 #if !JSON_HAS_THREE_WAY_COMPARISON
 // functions cannot be defined inside class due to ODR violations
 template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept
-                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
 {
     return lhs.reference_tokens == rhs.reference_tokens;
 }
 
-template<typename RefStringTypeLhs,
+template<typename RefStringTypeLhs, typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
-         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
 JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
-inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs, const StringType& rhs)
-                       const StringType& rhs)
 {
     return lhs == json_pointer<RefStringTypeLhs>(rhs);
 }
 
-template<typename RefStringTypeRhs,
+template<typename RefStringTypeRhs, typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
-         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
 JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
-inline bool operator==(const StringType& lhs,
+inline bool operator==(const StringType& lhs, const json_pointer<RefStringTypeRhs>& rhs)
-                       const json_pointer<RefStringTypeRhs>& rhs)
 {
     return json_pointer<RefStringTypeRhs>(lhs) == rhs;
 }
 
 template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept
-                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
 {
     return !(lhs == rhs);
 }
 
-template<typename RefStringTypeLhs,
+template<typename RefStringTypeLhs, typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
-         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
 JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
-inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs, const StringType& rhs)
-                       const StringType& rhs)
 {
     return !(lhs == rhs);
 }
 
-template<typename RefStringTypeRhs,
+template<typename RefStringTypeRhs, typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
-         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
 JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
-inline bool operator!=(const StringType& lhs,
+inline bool operator!=(const StringType& lhs, const json_pointer<RefStringTypeRhs>& rhs)
-                       const json_pointer<RefStringTypeRhs>& rhs)
 {
     return !(lhs == rhs);
 }
 
 template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs, const json_pointer<RefStringTypeRhs>& rhs) noexcept
-                      const json_pointer<RefStringTypeRhs>& rhs) noexcept
 {
     return lhs.reference_tokens < rhs.reference_tokens;
 }

include/nlohmann/detail/json_ref.hpp

@@ -36,10 +36,8 @@ class json_ref
       : owned_value(init)
     {}
 
-    template <
+    template<class... Args, enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0>
-        class... Args,
+    json_ref(Args&&... args)
-        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
-    json_ref(Args && ... args)
       : owned_value(std::forward<Args>(args)...)
     {}
 
@@ -66,7 +64,7 @@ class json_ref
 
     value_type const* operator->() const
     {
-        return &** this;
+        return &**this;
     }
 
   private:

include/nlohmann/detail/meta/cpp_future.hpp

@@ -28,8 +28,8 @@ using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::typ
 // the following utilities are natively available in C++14
 using std::enable_if_t;
 using std::index_sequence;
-using std::make_index_sequence;
 using std::index_sequence_for;
+using std::make_index_sequence;
 
 #else
 
@@ -61,7 +61,7 @@ using enable_if_t = typename std::enable_if<B, T>::type;
 //     // will be deduced to `0, 1, 2, 3, 4`.
 //     user_function(make_integer_sequence<int, 5>());
 //   }
-template <typename T, T... Ints>
+template<typename T, T... Ints>
 struct integer_sequence
 {
     using value_type = T;
@@ -76,38 +76,37 @@ struct integer_sequence
 // A helper template for an `integer_sequence` of `size_t`,
 // `absl::index_sequence` is designed to be a drop-in replacement for C++14's
 // `std::index_sequence`.
-template <size_t... Ints>
+template<size_t... Ints>
 using index_sequence = integer_sequence<size_t, Ints...>;
 
 namespace utility_internal
 {
 
-template <typename Seq, size_t SeqSize, size_t Rem>
+template<typename Seq, size_t SeqSize, size_t Rem>
 struct Extend;
 
 // Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
-template <typename T, T... Ints, size_t SeqSize>
+template<typename T, T... Ints, size_t SeqSize>
 struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
 {
-    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
+    using type = integer_sequence<T, Ints..., (Ints + SeqSize)...>;
 };
 
-template <typename T, T... Ints, size_t SeqSize>
+template<typename T, T... Ints, size_t SeqSize>
 struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
 {
-    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
+    using type = integer_sequence<T, Ints..., (Ints + SeqSize)..., 2 * SeqSize>;
 };
 
 // Recursion helper for 'make_integer_sequence<T, N>'.
 // 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
-template <typename T, size_t N>
+template<typename T, size_t N>
 struct Gen
 {
-    using type =
+    using type = typename Extend<typename Gen<T, N / 2>::type, N / 2, N % 2>::type;
-        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
 };
 
-template <typename T>
+template<typename T>
 struct Gen<T, 0>
 {
     using type = integer_sequence<T>;
@@ -122,7 +121,7 @@ struct Gen<T, 0>
 // This template alias is equivalent to
 // `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
 // replacement for C++14's `std::make_integer_sequence`.
-template <typename T, T N>
+template<typename T, T N>
 using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
 
 // make_index_sequence
@@ -130,7 +129,7 @@ using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
 // This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
 // and is designed to be a drop-in replacement for C++14's
 // `std::make_index_sequence`.
-template <size_t N>
+template<size_t N>
 using make_index_sequence = make_integer_sequence<size_t, N>;
 
 // index_sequence_for
@@ -138,7 +137,7 @@ using make_index_sequence = make_integer_sequence<size_t, N>;
 // Converts a typename pack into an index sequence of the same length, and
 // is designed to be a drop-in replacement for C++14's
 // `std::index_sequence_for()`
-template <typename... Ts>
+template<typename... Ts>
 using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
 
 //// END OF CODE FROM GOOGLE ABSEIL
@@ -146,8 +145,12 @@ using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
 #endif
 
 // dispatch utility (taken from ranges-v3)
-template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<unsigned N>
-template<> struct priority_tag<0> {};
+struct priority_tag : priority_tag<N - 1>
+{};
+template<>
+struct priority_tag<0>
+{};
 
 // taken from ranges-v3
 template<typename T>
@@ -157,14 +160,14 @@ struct static_const
 };
 
 #ifndef JSON_HAS_CPP_17
-    template<typename T>
+template<typename T>
-    constexpr T static_const<T>::value;
+constexpr T static_const<T>::value;
 #endif
 
 template<typename T, typename... Args>
-inline constexpr std::array<T, sizeof...(Args)> make_array(Args&& ... args)
+inline constexpr std::array<T, sizeof...(Args)> make_array(Args&&... args)
 {
-    return std::array<T, sizeof...(Args)> {{static_cast<T>(std::forward<Args>(args))...}};
+    return std::array<T, sizeof...(Args)>{ { static_cast<T>(std::forward<Args>(args))... } };
 }
 
 }  // namespace detail

include/nlohmann/detail/meta/detected.hpp

@@ -27,10 +27,7 @@ struct nonesuch
     void operator=(nonesuch&&) = delete;
 };
 
-template<class Default,
+template<class Default, class AlwaysVoid, template<class...> class Op, class... Args>
-         class AlwaysVoid,
-         template<class...> class Op,
-         class... Args>
 struct detector
 {
     using value_t = std::false_type;
@@ -48,7 +45,8 @@ template<template<class...> class Op, class... Args>
 using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
 
 template<template<class...> class Op, class... Args>
-struct is_detected_lazy : is_detected<Op, Args...> { };
+struct is_detected_lazy : is_detected<Op, Args...>
+{};
 
 template<template<class...> class Op, class... Args>
 using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
@@ -63,8 +61,7 @@ template<class Expected, template<class...> class Op, class... Args>
 using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
 
 template<class To, template<class...> class Op, class... Args>
-using is_detected_convertible =
+using is_detected_convertible = std::is_convertible<detected_t<Op, Args...>, To>;
-    std::is_convertible<detected_t<Op, Args...>, To>;
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/meta/identity_tag.hpp

@@ -15,7 +15,9 @@ namespace detail
 {
 
 // dispatching helper struct
-template <class T> struct identity_tag {};
+template<class T>
+struct identity_tag
+{};
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/meta/is_sax.hpp

@@ -9,8 +9,8 @@
 #pragma once
 
 #include <cstdint>  // size_t
-#include <utility> // declval
 #include <string>   // string
+#include <utility>  // declval
 
 #include <nlohmann/detail/abi_macros.hpp>
 #include <nlohmann/detail/meta/detected.hpp>
@@ -24,58 +24,47 @@ template<typename T>
 using null_function_t = decltype(std::declval<T&>().null());
 
 template<typename T>
-using boolean_function_t =
+using boolean_function_t = decltype(std::declval<T&>().boolean(std::declval<bool>()));
-    decltype(std::declval<T&>().boolean(std::declval<bool>()));
 
 template<typename T, typename Integer>
-using number_integer_function_t =
+using number_integer_function_t = decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
-    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
 
 template<typename T, typename Unsigned>
-using number_unsigned_function_t =
+using number_unsigned_function_t = decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
-    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
 
 template<typename T, typename Float, typename String>
-using number_float_function_t = decltype(std::declval<T&>().number_float(
+using number_float_function_t = decltype(std::declval<T&>().number_float(std::declval<Float>(), std::declval<const String&>()));
-                                    std::declval<Float>(), std::declval<const String&>()));
 
 template<typename T, typename String>
-using string_function_t =
+using string_function_t = decltype(std::declval<T&>().string(std::declval<String&>()));
-    decltype(std::declval<T&>().string(std::declval<String&>()));
 
 template<typename T, typename Binary>
-using binary_function_t =
+using binary_function_t = decltype(std::declval<T&>().binary(std::declval<Binary&>()));
-    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
 
 template<typename T>
-using start_object_function_t =
+using start_object_function_t = decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
-    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
 
 template<typename T, typename String>
-using key_function_t =
+using key_function_t = decltype(std::declval<T&>().key(std::declval<String&>()));
-    decltype(std::declval<T&>().key(std::declval<String&>()));
 
 template<typename T>
 using end_object_function_t = decltype(std::declval<T&>().end_object());
 
 template<typename T>
-using start_array_function_t =
+using start_array_function_t = decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
-    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
 
 template<typename T>
 using end_array_function_t = decltype(std::declval<T&>().end_array());
 
 template<typename T, typename Exception>
-using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+using parse_error_function_t =
-        std::declval<std::size_t>(), std::declval<const std::string&>(),
+    decltype(std::declval<T&>().parse_error(std::declval<std::size_t>(), std::declval<const std::string&>(), std::declval<const Exception&>()));
-        std::declval<const Exception&>()));
 
 template<typename SAX, typename BasicJsonType>
 struct is_sax
 {
   private:
-    static_assert(is_basic_json<BasicJsonType>::value,
+    static_assert(is_basic_json<BasicJsonType>::value, "BasicJsonType must be of type basic_json<...>");
-                  "BasicJsonType must be of type basic_json<...>");
 
     using number_integer_t = typename BasicJsonType::number_integer_t;
     using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
@@ -86,27 +75,21 @@ struct is_sax
 
   public:
     static constexpr bool value =
-        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, null_function_t, SAX>::value && is_detected_exact<bool, boolean_function_t, SAX>::value &&
-        is_detected_exact<bool, boolean_function_t, SAX>::value &&
         is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
         is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
         is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
-        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value && is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
-        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value && is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
-        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value && is_detected_exact<bool, start_array_function_t, SAX>::value &&
-        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value && is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
-        is_detected_exact<bool, end_object_function_t, SAX>::value &&
-        is_detected_exact<bool, start_array_function_t, SAX>::value &&
-        is_detected_exact<bool, end_array_function_t, SAX>::value &&
-        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
 };
 
 template<typename SAX, typename BasicJsonType>
 struct is_sax_static_asserts
 {
   private:
-    static_assert(is_basic_json<BasicJsonType>::value,
+    static_assert(is_basic_json<BasicJsonType>::value, "BasicJsonType must be of type basic_json<...>");
-                  "BasicJsonType must be of type basic_json<...>");
 
     using number_integer_t = typename BasicJsonType::number_integer_t;
     using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
@@ -116,41 +99,23 @@ struct is_sax_static_asserts
     using exception_t = typename BasicJsonType::exception;
 
   public:
-    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value, "Missing/invalid function: bool null()");
-                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value, "Missing/invalid function: bool boolean(bool)");
-    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value, "Missing/invalid function: bool boolean(bool)");
-                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value,
-    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
-                  "Missing/invalid function: bool boolean(bool)");
-    static_assert(
-        is_detected_exact<bool, number_integer_function_t, SAX,
-        number_integer_t>::value,
                   "Missing/invalid function: bool number_integer(number_integer_t)");
-    static_assert(
+    static_assert(is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value,
-        is_detected_exact<bool, number_unsigned_function_t, SAX,
-        number_unsigned_t>::value,
                   "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
-    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value,
-                  number_float_t, string_t>::value,
                   "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
-    static_assert(
+    static_assert(is_detected_exact<bool, string_function_t, SAX, string_t>::value, "Missing/invalid function: bool string(string_t&)");
-        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+    static_assert(is_detected_exact<bool, binary_function_t, SAX, binary_t>::value, "Missing/invalid function: bool binary(binary_t&)");
-        "Missing/invalid function: bool string(string_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value, "Missing/invalid function: bool start_object(std::size_t)");
-    static_assert(
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value, "Missing/invalid function: bool key(string_t&)");
-        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value, "Missing/invalid function: bool end_object()");
-        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value, "Missing/invalid function: bool start_array(std::size_t)");
-    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value, "Missing/invalid function: bool end_array()");
-                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
-    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
-                  "Missing/invalid function: bool key(string_t&)");
-    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
-                  "Missing/invalid function: bool end_object()");
-    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
-                  "Missing/invalid function: bool start_array(std::size_t)");
-    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
-                  "Missing/invalid function: bool end_array()");
-    static_assert(
-        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
                   "Missing/invalid function: bool parse_error(std::size_t, const "
                   "std::string&, const exception&)");
 };

include/nlohmann/detail/meta/std_fs.hpp

@@ -11,7 +11,7 @@
 #include <nlohmann/detail/macro_scope.hpp>
 
 #if JSON_HAS_EXPERIMENTAL_FILESYSTEM
-#include <experimental/filesystem>
+    #include <experimental/filesystem>
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
 {
@@ -19,7 +19,7 @@ namespace std_fs = std::experimental::filesystem;
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END
 #elif JSON_HAS_FILESYSTEM
-#include <filesystem>
+    #include <filesystem>
 NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
 {

include/nlohmann/detail/meta/type_traits.hpp

@@ -9,10 +9,10 @@
 #pragma once
 
 #include <limits>       // numeric_limits
+#include <string>       // char_traits
+#include <tuple>        // tuple
 #include <type_traits>  // false_type, is_constructible, is_integral, is_same, true_type
 #include <utility>      // declval
-#include <tuple> // tuple
-#include <string> // char_traits
 
 #include <nlohmann/detail/iterators/iterator_traits.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
@@ -47,19 +47,22 @@ namespace detail
 // In this case, T has to be properly CV-qualified to constraint the function arguments
 // (e.g. to_json(BasicJsonType&, const T&))
 
-template<typename> struct is_basic_json : std::false_type {};
+template<typename>
+struct is_basic_json : std::false_type
+{};
 
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
-struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type
+{};
 
 // used by exceptions create() member functions
 // true_type for pointer to possibly cv-qualified basic_json or std::nullptr_t
 // false_type otherwise
 template<typename BasicJsonContext>
-struct is_basic_json_context :
+struct is_basic_json_context
-    std::integral_constant < bool,
+  : std::integral_constant<bool,
-    is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value
+                           is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value ||
-    || std::is_same<BasicJsonContext, std::nullptr_t>::value >
+                               std::is_same<BasicJsonContext, std::nullptr_t>::value>
 {};
 
 //////////////////////
@@ -70,10 +73,12 @@ template<typename>
 class json_ref;
 
 template<typename>
-struct is_json_ref : std::false_type {};
+struct is_json_ref : std::false_type
+{};
 
 template<typename T>
-struct is_json_ref<json_ref<T>> : std::true_type {};
+struct is_json_ref<json_ref<T>> : std::true_type
+{};
 
 //////////////////////////
 // aliases for detected //
@@ -111,63 +116,61 @@ using get_template_function = decltype(std::declval<T>().template get<U>());
 
 // trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
 template<typename BasicJsonType, typename T, typename = void>
-struct has_from_json : std::false_type {};
+struct has_from_json : std::false_type
+{};
 
 // trait checking if j.get<T> is valid
 // use this trait instead of std::is_constructible or std::is_convertible,
 // both rely on, or make use of implicit conversions, and thus fail when T
 // has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
-template <typename BasicJsonType, typename T>
+template<typename BasicJsonType, typename T>
 struct is_getable
 {
     static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
 };
 
 template<typename BasicJsonType, typename T>
-struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+struct has_from_json<BasicJsonType, T, enable_if_t<!is_basic_json<T>::value>>
 {
     using serializer = typename BasicJsonType::template json_serializer<T, void>;
 
-    static constexpr bool value =
+    static constexpr bool value = is_detected_exact<void, from_json_function, serializer, const BasicJsonType&, T&>::value;
-        is_detected_exact<void, from_json_function, serializer,
-        const BasicJsonType&, T&>::value;
 };
 
 // This trait checks if JSONSerializer<T>::from_json(json const&) exists
 // this overload is used for non-default-constructible user-defined-types
 template<typename BasicJsonType, typename T, typename = void>
-struct has_non_default_from_json : std::false_type {};
+struct has_non_default_from_json : std::false_type
+{};
 
 template<typename BasicJsonType, typename T>
-struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+struct has_non_default_from_json<BasicJsonType, T, enable_if_t<!is_basic_json<T>::value>>
 {
     using serializer = typename BasicJsonType::template json_serializer<T, void>;
 
-    static constexpr bool value =
+    static constexpr bool value = is_detected_exact<T, from_json_function, serializer, const BasicJsonType&>::value;
-        is_detected_exact<T, from_json_function, serializer,
-        const BasicJsonType&>::value;
 };
 
 // This trait checks if BasicJsonType::json_serializer<T>::to_json exists
 // Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
 template<typename BasicJsonType, typename T, typename = void>
-struct has_to_json : std::false_type {};
+struct has_to_json : std::false_type
+{};
 
 template<typename BasicJsonType, typename T>
-struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+struct has_to_json<BasicJsonType, T, enable_if_t<!is_basic_json<T>::value>>
 {
     using serializer = typename BasicJsonType::template json_serializer<T, void>;
 
-    static constexpr bool value =
+    static constexpr bool value = is_detected_exact<void, to_json_function, serializer, BasicJsonType&, T>::value;
-        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
-        T>::value;
 };
 
 template<typename T>
 using detect_key_compare = typename T::key_compare;
 
 template<typename T>
-struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value> {};
+struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value>
+{};
 
 // obtains the actual object key comparator
 template<typename BasicJsonType>
@@ -175,8 +178,7 @@ struct actual_object_comparator
 {
     using object_t = typename BasicJsonType::object_t;
     using object_comparator_t = typename BasicJsonType::default_object_comparator_t;
-    using type = typename std::conditional < has_key_compare<object_t>::value,
+    using type = typename std::conditional<has_key_compare<object_t>::value, typename object_t::key_compare, object_comparator_t>::type;
-          typename object_t::key_compare, object_comparator_t>::type;
 };
 
 template<typename BasicJsonType>
@@ -244,54 +246,67 @@ struct char_traits<signed char> : std::char_traits<char>
 ///////////////////
 
 // https://en.cppreference.com/w/cpp/types/conjunction
-template<class...> struct conjunction : std::true_type { };
+template<class...>
-template<class B> struct conjunction<B> : B { };
+struct conjunction : std::true_type
+{};
+template<class B>
+struct conjunction<B> : B
+{};
 template<class B, class... Bn>
-struct conjunction<B, Bn...>
+struct conjunction<B, Bn...> : std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type
-: std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type {};
+{};
 
 // https://en.cppreference.com/w/cpp/types/negation
-template<class B> struct negation : std::integral_constant < bool, !B::value > { };
+template<class B>
+struct negation : std::integral_constant<bool, !B::value>
+{};
 
 // Reimplementation of is_constructible and is_default_constructible, due to them being broken for
 // std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
 // This causes compile errors in e.g. clang 3.5 or gcc 4.9.
-template <typename T>
+template<typename T>
-struct is_default_constructible : std::is_default_constructible<T> {};
+struct is_default_constructible : std::is_default_constructible<T>
+{};
 
-template <typename T1, typename T2>
+template<typename T1, typename T2>
-struct is_default_constructible<std::pair<T1, T2>>
+struct is_default_constructible<std::pair<T1, T2>> : conjunction<is_default_constructible<T1>, is_default_constructible<T2>>
-            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+{};
 
-template <typename T1, typename T2>
+template<typename T1, typename T2>
-struct is_default_constructible<const std::pair<T1, T2>>
+struct is_default_constructible<const std::pair<T1, T2>> : conjunction<is_default_constructible<T1>, is_default_constructible<T2>>
-            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+{};
 
-template <typename... Ts>
+template<typename... Ts>
-struct is_default_constructible<std::tuple<Ts...>>
+struct is_default_constructible<std::tuple<Ts...>> : conjunction<is_default_constructible<Ts>...>
-            : conjunction<is_default_constructible<Ts>...> {};
+{};
 
-template <typename... Ts>
+template<typename... Ts>
-struct is_default_constructible<const std::tuple<Ts...>>
+struct is_default_constructible<const std::tuple<Ts...>> : conjunction<is_default_constructible<Ts>...>
-            : conjunction<is_default_constructible<Ts>...> {};
+{};
 
-template <typename T, typename... Args>
+template<typename T, typename... Args>
-struct is_constructible : std::is_constructible<T, Args...> {};
+struct is_constructible : std::is_constructible<T, Args...>
+{};
 
-template <typename T1, typename T2>
+template<typename T1, typename T2>
-struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
+struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>>
+{};
 
-template <typename T1, typename T2>
+template<typename T1, typename T2>
-struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
+struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>>
+{};
 
-template <typename... Ts>
+template<typename... Ts>
-struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
+struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>>
+{};
 
-template <typename... Ts>
+template<typename... Ts>
-struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
+struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>>
+{};
 
 template<typename T, typename = void>
-struct is_iterator_traits : std::false_type {};
+struct is_iterator_traits : std::false_type
+{};
 
 template<typename T>
 struct is_iterator_traits<iterator_traits<T>>
@@ -300,11 +315,8 @@ struct is_iterator_traits<iterator_traits<T>>
     using traits = iterator_traits<T>;
 
   public:
-    static constexpr auto value =
+    static constexpr auto value = is_detected<value_type_t, traits>::value && is_detected<difference_type_t, traits>::value &&
-        is_detected<value_type_t, traits>::value &&
+                                  is_detected<pointer_t, traits>::value && is_detected<iterator_category_t, traits>::value &&
-        is_detected<difference_type_t, traits>::value &&
-        is_detected<pointer_t, traits>::value &&
-        is_detected<iterator_category_t, traits>::value &&
                                   is_detected<reference_t, traits>::value;
 };
 
@@ -320,8 +332,7 @@ struct is_range
     // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
     // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
     // but reimplementing these would be too much work, as a lot of other concepts are used underneath
-    static constexpr auto is_iterator_begin =
+    static constexpr auto is_iterator_begin = is_iterator_traits<iterator_traits<iterator>>::value;
-        is_iterator_traits<iterator_traits<iterator>>::value;
 
   public:
     static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
@@ -338,73 +349,62 @@ using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
 // and is written by Xiang Fan who agreed to using it in this library.
 
 template<typename T, typename = void>
-struct is_complete_type : std::false_type {};
+struct is_complete_type : std::false_type
+{};
 
 template<typename T>
-struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type
+{};
 
-template<typename BasicJsonType, typename CompatibleObjectType,
+template<typename BasicJsonType, typename CompatibleObjectType, typename = void>
-         typename = void>
+struct is_compatible_object_type_impl : std::false_type
-struct is_compatible_object_type_impl : std::false_type {};
+{};
 
 template<typename BasicJsonType, typename CompatibleObjectType>
-struct is_compatible_object_type_impl <
+struct is_compatible_object_type_impl<
-    BasicJsonType, CompatibleObjectType,
+    BasicJsonType,
-    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    CompatibleObjectType,
-    is_detected<key_type_t, CompatibleObjectType>::value >>
+    enable_if_t<is_detected<mapped_type_t, CompatibleObjectType>::value && is_detected<key_type_t, CompatibleObjectType>::value>>
 {
     using object_t = typename BasicJsonType::object_t;
 
     // macOS's is_constructible does not play well with nonesuch...
-    static constexpr bool value =
+    static constexpr bool value = is_constructible<typename object_t::key_type, typename CompatibleObjectType::key_type>::value &&
-        is_constructible<typename object_t::key_type,
+                                  is_constructible<typename object_t::mapped_type, typename CompatibleObjectType::mapped_type>::value;
-        typename CompatibleObjectType::key_type>::value &&
-        is_constructible<typename object_t::mapped_type,
-        typename CompatibleObjectType::mapped_type>::value;
 };
 
 template<typename BasicJsonType, typename CompatibleObjectType>
-struct is_compatible_object_type
+struct is_compatible_object_type : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType>
-    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+{};
 
-template<typename BasicJsonType, typename ConstructibleObjectType,
+template<typename BasicJsonType, typename ConstructibleObjectType, typename = void>
-         typename = void>
+struct is_constructible_object_type_impl : std::false_type
-struct is_constructible_object_type_impl : std::false_type {};
+{};
 
 template<typename BasicJsonType, typename ConstructibleObjectType>
-struct is_constructible_object_type_impl <
+struct is_constructible_object_type_impl<
-    BasicJsonType, ConstructibleObjectType,
+    BasicJsonType,
-    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    ConstructibleObjectType,
-    is_detected<key_type_t, ConstructibleObjectType>::value >>
+    enable_if_t<is_detected<mapped_type_t, ConstructibleObjectType>::value && is_detected<key_type_t, ConstructibleObjectType>::value>>
 {
     using object_t = typename BasicJsonType::object_t;
 
-    static constexpr bool value =
+    static constexpr bool value = (is_default_constructible<ConstructibleObjectType>::value &&
-        (is_default_constructible<ConstructibleObjectType>::value &&
+                                   (std::is_move_assignable<ConstructibleObjectType>::value || std::is_copy_assignable<ConstructibleObjectType>::value) &&
-         (std::is_move_assignable<ConstructibleObjectType>::value ||
+                                   (is_constructible<typename ConstructibleObjectType::key_type, typename object_t::key_type>::value &&
-          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+                                    std::is_same<typename object_t::mapped_type, typename ConstructibleObjectType::mapped_type>::value)) ||
-         (is_constructible<typename ConstructibleObjectType::key_type,
+                                  (has_from_json<BasicJsonType, typename ConstructibleObjectType::mapped_type>::value ||
-          typename object_t::key_type>::value &&
+                                   has_non_default_from_json<BasicJsonType, typename ConstructibleObjectType::mapped_type>::value);
-          std::is_same <
-          typename object_t::mapped_type,
-          typename ConstructibleObjectType::mapped_type >::value)) ||
-        (has_from_json<BasicJsonType,
-         typename ConstructibleObjectType::mapped_type>::value ||
-         has_non_default_from_json <
-         BasicJsonType,
-         typename ConstructibleObjectType::mapped_type >::value);
 };
 
 template<typename BasicJsonType, typename ConstructibleObjectType>
-struct is_constructible_object_type
+struct is_constructible_object_type : is_constructible_object_type_impl<BasicJsonType, ConstructibleObjectType>
-    : is_constructible_object_type_impl<BasicJsonType,
+{};
-      ConstructibleObjectType> {};
 
 template<typename BasicJsonType, typename CompatibleStringType>
 struct is_compatible_string_type
 {
-    static constexpr auto value =
+    static constexpr auto value = is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
-        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
 };
 
 template<typename BasicJsonType, typename ConstructibleStringType>
@@ -417,174 +417,164 @@ struct is_constructible_string_type
     using laundered_type = ConstructibleStringType;
 #endif
 
-    static constexpr auto value =
+    static constexpr auto value = conjunction<is_constructible<laundered_type, typename BasicJsonType::string_t>,
-        conjunction <
+                                              is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, laundered_type>>::value;
-        is_constructible<laundered_type, typename BasicJsonType::string_t>,
-        is_detected_exact<typename BasicJsonType::string_t::value_type,
-        value_type_t, laundered_type >>::value;
 };
 
 template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
-struct is_compatible_array_type_impl : std::false_type {};
+struct is_compatible_array_type_impl : std::false_type
+{};
 
 template<typename BasicJsonType, typename CompatibleArrayType>
-struct is_compatible_array_type_impl <
+struct is_compatible_array_type_impl<BasicJsonType,
-    BasicJsonType, CompatibleArrayType,
+                                     CompatibleArrayType,
-    enable_if_t <
+                                     enable_if_t<is_detected<iterator_t, CompatibleArrayType>::value &&
-    is_detected<iterator_t, CompatibleArrayType>::value&&
+                                                 is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value &&
-    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
+                                                 // special case for types like std::filesystem::path whose iterator's value_type are themselves
-// special case for types like std::filesystem::path whose iterator's value_type are themselves
+                                                 // c.f. https://github.com/nlohmann/json/pull/3073
-// c.f. https://github.com/nlohmann/json/pull/3073
+                                                 !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value>>
-    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
 {
-    static constexpr bool value =
+    static constexpr bool value = is_constructible<BasicJsonType, range_value_t<CompatibleArrayType>>::value;
-        is_constructible<BasicJsonType,
-        range_value_t<CompatibleArrayType>>::value;
 };
 
 template<typename BasicJsonType, typename CompatibleArrayType>
-struct is_compatible_array_type
+struct is_compatible_array_type : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType>
-    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+{};
 
 template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
-struct is_constructible_array_type_impl : std::false_type {};
+struct is_constructible_array_type_impl : std::false_type
+{};
 
 template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type_impl <
+struct is_constructible_array_type_impl<BasicJsonType,
-    BasicJsonType, ConstructibleArrayType,
+                                        ConstructibleArrayType,
-    enable_if_t<std::is_same<ConstructibleArrayType,
+                                        enable_if_t<std::is_same<ConstructibleArrayType, typename BasicJsonType::value_type>::value>> : std::true_type
-    typename BasicJsonType::value_type>::value >>
+{};
-            : std::true_type {};
 
 template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type_impl <
+struct is_constructible_array_type_impl<
-    BasicJsonType, ConstructibleArrayType,
+    BasicJsonType,
-    enable_if_t < !std::is_same<ConstructibleArrayType,
+    ConstructibleArrayType,
-    typename BasicJsonType::value_type>::value&&
+    enable_if_t<!std::is_same<ConstructibleArrayType, typename BasicJsonType::value_type>::value &&
-    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+                !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value && is_default_constructible<ConstructibleArrayType>::value &&
-    is_default_constructible<ConstructibleArrayType>::value&&
+                (std::is_move_assignable<ConstructibleArrayType>::value || std::is_copy_assignable<ConstructibleArrayType>::value) &&
-(std::is_move_assignable<ConstructibleArrayType>::value ||
+                is_detected<iterator_t, ConstructibleArrayType>::value &&
- std::is_copy_assignable<ConstructibleArrayType>::value)&&
+                is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value &&
-is_detected<iterator_t, ConstructibleArrayType>::value&&
+                is_detected<range_value_t, ConstructibleArrayType>::value &&
-is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
+                // special case for types like std::filesystem::path whose iterator's value_type are themselves
-is_detected<range_value_t, ConstructibleArrayType>::value&&
+                // c.f. https://github.com/nlohmann/json/pull/3073
-// special case for types like std::filesystem::path whose iterator's value_type are themselves
+                !std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value &&
-// c.f. https://github.com/nlohmann/json/pull/3073
+                is_complete_type<detected_t<range_value_t, ConstructibleArrayType>>::value>>
-!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
-        is_complete_type <
-        detected_t<range_value_t, ConstructibleArrayType >>::value >>
 {
     using value_type = range_value_t<ConstructibleArrayType>;
 
-    static constexpr bool value =
+    static constexpr bool value = std::is_same<value_type, typename BasicJsonType::array_t::value_type>::value ||
-        std::is_same<value_type,
+                                  has_from_json<BasicJsonType, value_type>::value || has_non_default_from_json<BasicJsonType, value_type>::value;
-        typename BasicJsonType::array_t::value_type>::value ||
-        has_from_json<BasicJsonType,
-        value_type>::value ||
-        has_non_default_from_json <
-        BasicJsonType,
-        value_type >::value;
 };
 
 template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type
+struct is_constructible_array_type : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType>
-    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+{};
 
-template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+template<typename RealIntegerType, typename CompatibleNumberIntegerType, typename = void>
-         typename = void>
+struct is_compatible_integer_type_impl : std::false_type
-struct is_compatible_integer_type_impl : std::false_type {};
+{};
 
 template<typename RealIntegerType, typename CompatibleNumberIntegerType>
-struct is_compatible_integer_type_impl <
+struct is_compatible_integer_type_impl<RealIntegerType,
-    RealIntegerType, CompatibleNumberIntegerType,
+                                       CompatibleNumberIntegerType,
-    enable_if_t < std::is_integral<RealIntegerType>::value&&
+                                       enable_if_t<std::is_integral<RealIntegerType>::value && std::is_integral<CompatibleNumberIntegerType>::value &&
-    std::is_integral<CompatibleNumberIntegerType>::value&&
+                                                   !std::is_same<bool, CompatibleNumberIntegerType>::value>>
-    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
 {
     // is there an assert somewhere on overflows?
     using RealLimits = std::numeric_limits<RealIntegerType>;
     using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
 
-    static constexpr auto value =
+    static constexpr auto value = is_constructible<RealIntegerType, CompatibleNumberIntegerType>::value && CompatibleLimits::is_integer &&
-        is_constructible<RealIntegerType,
-        CompatibleNumberIntegerType>::value &&
-        CompatibleLimits::is_integer &&
                                   RealLimits::is_signed == CompatibleLimits::is_signed;
 };
 
 template<typename RealIntegerType, typename CompatibleNumberIntegerType>
-struct is_compatible_integer_type
+struct is_compatible_integer_type : is_compatible_integer_type_impl<RealIntegerType, CompatibleNumberIntegerType>
-    : is_compatible_integer_type_impl<RealIntegerType,
+{};
-      CompatibleNumberIntegerType> {};
 
 template<typename BasicJsonType, typename CompatibleType, typename = void>
-struct is_compatible_type_impl: std::false_type {};
+struct is_compatible_type_impl : std::false_type
+{};
 
 template<typename BasicJsonType, typename CompatibleType>
-struct is_compatible_type_impl <
+struct is_compatible_type_impl<BasicJsonType, CompatibleType, enable_if_t<is_complete_type<CompatibleType>::value>>
-    BasicJsonType, CompatibleType,
-    enable_if_t<is_complete_type<CompatibleType>::value >>
 {
-    static constexpr bool value =
+    static constexpr bool value = has_to_json<BasicJsonType, CompatibleType>::value;
-        has_to_json<BasicJsonType, CompatibleType>::value;
 };
 
 template<typename BasicJsonType, typename CompatibleType>
-struct is_compatible_type
+struct is_compatible_type : is_compatible_type_impl<BasicJsonType, CompatibleType>
-    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+{};
 
 template<typename T1, typename T2>
-struct is_constructible_tuple : std::false_type {};
+struct is_constructible_tuple : std::false_type
+{};
 
 template<typename T1, typename... Args>
-struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...>
+{};
 
 template<typename BasicJsonType, typename T>
-struct is_json_iterator_of : std::false_type {};
+struct is_json_iterator_of : std::false_type
+{};
 
 template<typename BasicJsonType>
-struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type {};
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type
+{};
 
 template<typename BasicJsonType>
 struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::const_iterator> : std::true_type
 {};
 
 // checks if a given type T is a template specialization of Primary
-template<template <typename...> class Primary, typename T>
+template<template<typename...> class Primary, typename T>
-struct is_specialization_of : std::false_type {};
+struct is_specialization_of : std::false_type
+{};
 
-template<template <typename...> class Primary, typename... Args>
+template<template<typename...> class Primary, typename... Args>
-struct is_specialization_of<Primary, Primary<Args...>> : std::true_type {};
+struct is_specialization_of<Primary, Primary<Args...>> : std::true_type
+{};
 
 template<typename T>
 using is_json_pointer = is_specialization_of<::nlohmann::json_pointer, uncvref_t<T>>;
 
 // checks if A and B are comparable using Compare functor
 template<typename Compare, typename A, typename B, typename = void>
-struct is_comparable : std::false_type {};
+struct is_comparable : std::false_type
+{};
 
 template<typename Compare, typename A, typename B>
-struct is_comparable<Compare, A, B, void_t<
+struct is_comparable<
-decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())),
+    Compare,
-decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))
+    A,
->> : std::true_type {};
+    B,
+    void_t<decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())), decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))>>
+  : std::true_type
+{};
 
 template<typename T>
 using detect_is_transparent = typename T::is_transparent;
 
 // type trait to check if KeyType can be used as object key (without a BasicJsonType)
 // see is_usable_as_basic_json_key_type below
-template<typename Comparator, typename ObjectKeyType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+template<typename Comparator,
-         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+         typename ObjectKeyType,
-using is_usable_as_key_type = typename std::conditional <
+         typename KeyTypeCVRef,
-                              is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value
+         bool RequireTransparentComparator = true,
-                              && !(ExcludeObjectKeyType && std::is_same<KeyType,
+         bool ExcludeObjectKeyType = RequireTransparentComparator,
-                                   ObjectKeyType>::value)
+         typename KeyType = uncvref_t<KeyTypeCVRef>>
-                              && (!RequireTransparentComparator
+using is_usable_as_key_type =
-                                  || is_detected <detect_is_transparent, Comparator>::value)
+    typename std::conditional<is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value &&
-                              && !is_json_pointer<KeyType>::value,
+                                  !(ExcludeObjectKeyType && std::is_same<KeyType, ObjectKeyType>::value) &&
+                                  (!RequireTransparentComparator || is_detected<detect_is_transparent, Comparator>::value) && !is_json_pointer<KeyType>::value,
                               std::true_type,
-                              std::false_type >::type;
+                              std::false_type>::type;
 
 // type trait to check if KeyType can be used as object key
 // true if:
@@ -592,31 +582,31 @@ using is_usable_as_key_type = typename std::conditional <
 //   - if ExcludeObjectKeyType is true, KeyType is not BasicJsonType::object_t::key_type
 //   - the comparator is transparent or RequireTransparentComparator is false
 //   - KeyType is not a JSON iterator or json_pointer
-template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+template<typename BasicJsonType,
-         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+         typename KeyTypeCVRef,
-using is_usable_as_basic_json_key_type = typename std::conditional <
+         bool RequireTransparentComparator = true,
-        is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+         bool ExcludeObjectKeyType = RequireTransparentComparator,
-        typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+         typename KeyType = uncvref_t<KeyTypeCVRef>>
-        RequireTransparentComparator, ExcludeObjectKeyType>::value
+using is_usable_as_basic_json_key_type = typename std::conditional<is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
-        && !is_json_iterator_of<BasicJsonType, KeyType>::value,
+                                                                                         typename BasicJsonType::object_t::key_type,
+                                                                                         KeyTypeCVRef,
+                                                                                         RequireTransparentComparator,
+                                                                                         ExcludeObjectKeyType>::value &&
+                                                                       !is_json_iterator_of<BasicJsonType, KeyType>::value,
                                                                    std::true_type,
-        std::false_type >::type;
+                                                                   std::false_type>::type;
 
 template<typename ObjectType, typename KeyType>
 using detect_erase_with_key_type = decltype(std::declval<ObjectType&>().erase(std::declval<KeyType>()));
 
 // type trait to check if object_t has an erase() member functions accepting KeyType
 template<typename BasicJsonType, typename KeyType>
-using has_erase_with_key_type = typename std::conditional <
+using has_erase_with_key_type =
-                                is_detected <
+    typename std::conditional<is_detected<detect_erase_with_key_type, typename BasicJsonType::object_t, KeyType>::value, std::true_type, std::false_type>::type;
-                                detect_erase_with_key_type,
-                                typename BasicJsonType::object_t, KeyType >::value,
-                                std::true_type,
-                                std::false_type >::type;
 
 // a naive helper to check if a type is an ordered_map (exploits the fact that
 // ordered_map inherits capacity() from std::vector)
-template <typename T>
+template<typename T>
 struct is_ordered_map
 {
     using one = char;
@@ -626,14 +616,19 @@ struct is_ordered_map
         char x[2];  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
     };
 
-    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template<typename C>
-    template <typename C> static two test(...);
+    static one test(decltype(&C::capacity));
+    template<typename C>
+    static two test(...);
 
-    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+    enum
+    {
+        value = sizeof(test<T>(nullptr)) == sizeof(char)
+    };  // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
 };
 
 // to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
-template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+template<typename T, typename U, enable_if_t<!std::is_same<T, U>::value, int> = 0>
 T conditional_static_cast(U value)
 {
     return static_cast<T>(value);
@@ -656,17 +651,14 @@ using all_unsigned = conjunction<std::is_unsigned<Types>...>;
 
 // there's a disjunction trait in another PR; replace when merged
 template<typename... Types>
-using same_sign = std::integral_constant < bool,
+using same_sign = std::integral_constant<bool, all_signed<Types...>::value || all_unsigned<Types...>::value>;
-      all_signed<Types...>::value || all_unsigned<Types...>::value >;
 
 template<typename OfType, typename T>
-using never_out_of_range = std::integral_constant < bool,
+using never_out_of_range =
-      (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType)))
+    std::integral_constant<bool,
-      || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T)) >;
+                           (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType))) || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T))>;
 
-template<typename OfType, typename T,
+template<typename OfType, typename T, bool OfTypeSigned = std::is_signed<OfType>::value, bool TSigned = std::is_signed<T>::value>
-         bool OfTypeSigned = std::is_signed<OfType>::value,
-         bool TSigned = std::is_signed<T>::value>
 struct value_in_range_of_impl2;
 
 template<typename OfType, typename T>
@@ -705,12 +697,13 @@ struct value_in_range_of_impl2<OfType, T, true, true>
     static constexpr bool test(T val)
     {
         using CommonType = typename std::common_type<OfType, T>::type;
-        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)())
+        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)()) &&
-               && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+               static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
     }
 };
 
-template<typename OfType, typename T,
+template<typename OfType,
+         typename T,
          bool NeverOutOfRange = never_out_of_range<OfType, T>::value,
          typename = detail::enable_if_t<all_integral<OfType, T>::value>>
 struct value_in_range_of_impl1;
@@ -756,16 +749,15 @@ inline constexpr bool is_c_string()
     using TUnCVExt = typename std::remove_cv<TUnExt>::type;
     using TUnPtr = typename std::remove_pointer<T>::type;
     using TUnCVPtr = typename std::remove_cv<TUnPtr>::type;
-    return
+    return (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value) || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
-        (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value)
-        || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
 }
 
 }  // namespace impl
 
 // checks whether T is a [cv] char */[cv] char[] C string
 template<typename T>
-struct is_c_string : bool_constant<impl::is_c_string<T>()> {};
+struct is_c_string : bool_constant<impl::is_c_string<T>()>
+{};
 
 template<typename T>
 using is_c_string_uncvref = is_c_string<uncvref_t<T>>;
@@ -787,7 +779,8 @@ inline constexpr bool is_transparent()
 
 // checks whether T has a member named is_transparent
 template<typename T>
-struct is_transparent : bool_constant<impl::is_transparent<T>()> {};
+struct is_transparent : bool_constant<impl::is_transparent<T>()>
+{};
 
 ///////////////////////////////////////////////////////////////////////////////
 

include/nlohmann/detail/meta/void_t.hpp

@@ -14,11 +14,13 @@ NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
 {
 
-template<typename ...Ts> struct make_void
+template<typename... Ts>
+struct make_void
 {
     using type = void;
 };
-template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+template<typename... Ts>
+using void_t = typename make_void<Ts...>::type;
 
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END

include/nlohmann/detail/output/binary_writer.hpp

@@ -10,11 +10,11 @@
 
 #include <algorithm>  // reverse
 #include <array>      // array
-#include <map> // map
 #include <cmath>      // isnan, isinf
 #include <cstdint>    // uint8_t, uint16_t, uint32_t, uint64_t
 #include <cstring>    // memcpy
 #include <limits>     // numeric_limits
+#include <map>        // map
 #include <string>     // string
 #include <utility>    // move
 #include <vector>     // vector
@@ -48,7 +48,8 @@ class binary_writer
 
     @param[in] adapter  output adapter to write to
     */
-    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
+    explicit binary_writer(output_adapter_t<CharType> adapter)
+      : oa(std::move(adapter))
     {
         JSON_ASSERT(oa);
     }
@@ -98,9 +99,7 @@ class binary_writer
 
             case value_t::boolean:
             {
-                oa->write_character(j.m_data.m_value.boolean
+                oa->write_character(j.m_data.m_value.boolean ? to_char_type(0xF5) : to_char_type(0xF4));
-                                    ? to_char_type(0xF5)
-                                    : to_char_type(0xF4));
                 break;
             }
 
@@ -253,9 +252,7 @@ class binary_writer
                 // LCOV_EXCL_STOP
 
                 // step 2: write the string
-                oa->write_characters(
+                oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()), j.m_data.m_value.string->size());
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
                 break;
             }
 
@@ -354,9 +351,7 @@ class binary_writer
                 // LCOV_EXCL_STOP
 
                 // step 2: write each element
-                oa->write_characters(
+                oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()), N);
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                    N);
 
                 break;
             }
@@ -422,9 +417,7 @@ class binary_writer
 
             case value_t::boolean:  // true and false
             {
-                oa->write_character(j.m_data.m_value.boolean
+                oa->write_character(j.m_data.m_value.boolean ? to_char_type(0xC3) : to_char_type(0xC2));
-                                    ? to_char_type(0xC3)
-                                    : to_char_type(0xC2));
                 break;
             }
 
@@ -573,9 +566,7 @@ class binary_writer
                 }
 
                 // step 2: write the string
-                oa->write_characters(
+                oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()), j.m_data.m_value.string->size());
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
                 break;
             }
 
@@ -645,7 +636,6 @@ class binary_writer
                                 fixed = false;
                                 break;
                         }
-
                     }
                     else
                     {
@@ -661,8 +651,7 @@ class binary_writer
                 }
                 else if (N <= (std::numeric_limits<std::uint16_t>::max)())
                 {
-                    const std::uint8_t output_type = use_ext
+                    const std::uint8_t output_type = use_ext ? 0xC8   // ext 16
-                                                     ? 0xC8 // ext 16
                                                              : 0xC5;  // bin 16
 
                     oa->write_character(to_char_type(output_type));
@@ -670,8 +659,7 @@ class binary_writer
                 }
                 else if (N <= (std::numeric_limits<std::uint32_t>::max)())
                 {
-                    const std::uint8_t output_type = use_ext
+                    const std::uint8_t output_type = use_ext ? 0xC9   // ext 32
-                                                     ? 0xC9 // ext 32
                                                              : 0xC6;  // bin 32
 
                     oa->write_character(to_char_type(output_type));
@@ -685,9 +673,7 @@ class binary_writer
                 }
 
                 // step 2: write the byte string
-                oa->write_characters(
+                oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()), N);
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                    N);
 
                 break;
             }
@@ -736,9 +722,7 @@ class binary_writer
     @param[in] add_prefix  whether prefixes need to be used for this value
     @param[in] use_bjdata  whether write in BJData format, default is false
     */
-    void write_ubjson(const BasicJsonType& j, const bool use_count,
+    void write_ubjson(const BasicJsonType& j, const bool use_count, const bool use_type, const bool add_prefix = true, const bool use_bjdata = false)
-                      const bool use_type, const bool add_prefix = true,
-                      const bool use_bjdata = false)
     {
         switch (j.type())
         {
@@ -755,9 +739,7 @@ class binary_writer
             {
                 if (add_prefix)
                 {
-                    oa->write_character(j.m_data.m_value.boolean
+                    oa->write_character(j.m_data.m_value.boolean ? to_char_type('T') : to_char_type('F'));
-                                        ? to_char_type('T')
-                                        : to_char_type('F'));
                 }
                 break;
             }
@@ -787,9 +769,7 @@ class binary_writer
                     oa->write_character(to_char_type('S'));
                 }
                 write_number_with_ubjson_prefix(j.m_data.m_value.string->size(), true, use_bjdata);
-                oa->write_characters(
+                oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()), j.m_data.m_value.string->size());
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
                 break;
             }
 
@@ -805,13 +785,11 @@ class binary_writer
                 {
                     JSON_ASSERT(use_count);
                     const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
-                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(), [this, first_prefix, use_bjdata](const BasicJsonType& v) {
-                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
-                    {
                         return ubjson_prefix(v, use_bjdata) == first_prefix;
                     });
 
-                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+                    std::vector<CharType> bjdx = { '[', '{', 'S', 'H', 'T', 'F', 'N', 'Z' };  // excluded markers in bjdata optimized type
 
                     if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
                     {
@@ -862,9 +840,7 @@ class binary_writer
 
                 if (use_type)
                 {
-                    oa->write_characters(
+                    oa->write_characters(reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()), j.m_data.m_value.binary->size());
-                        reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                        j.m_data.m_value.binary->size());
                 }
                 else
                 {
@@ -885,9 +861,13 @@ class binary_writer
 
             case value_t::object:
             {
-                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
+                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() &&
+                    j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() &&
+                    j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
                 {
-                    if (!write_bjdata_ndarray(*j.m_data.m_value.object, use_count, use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
+                    if (!write_bjdata_ndarray(*j.m_data.m_value.object,
+                                              use_count,
+                                              use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
                     {
                         break;
                     }
@@ -903,13 +883,11 @@ class binary_writer
                 {
                     JSON_ASSERT(use_count);
                     const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
-                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                    const bool same_prefix = std::all_of(j.begin(), j.end(), [this, first_prefix, use_bjdata](const BasicJsonType& v) {
-                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
-                    {
                         return ubjson_prefix(v, use_bjdata) == first_prefix;
                     });
 
-                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+                    std::vector<CharType> bjdx = { '[', '{', 'S', 'H', 'T', 'F', 'N', 'Z' };  // excluded markers in bjdata optimized type
 
                     if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
                     {
@@ -928,9 +906,7 @@ class binary_writer
                 for (const auto& el : *j.m_data.m_value.object)
                 {
                     write_number_with_ubjson_prefix(el.first.size(), true, use_bjdata);
-                    oa->write_characters(
+                    oa->write_characters(reinterpret_cast<const CharType*>(el.first.c_str()), el.first.size());
-                        reinterpret_cast<const CharType*>(el.first.c_str()),
-                        el.first.size());
                     write_ubjson(el.second, use_count, use_type, prefix_required, use_bjdata);
                 }
 
@@ -966,26 +942,22 @@ class binary_writer
             static_cast<void>(j);
         }
 
-        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/ 1u;
     }
 
     /*!
     @brief Writes the given @a element_type and @a name to the output adapter
     */
-    void write_bson_entry_header(const string_t& name,
+    void write_bson_entry_header(const string_t& name, const std::uint8_t element_type)
-                                 const std::uint8_t element_type)
     {
         oa->write_character(to_char_type(element_type));  // boolean
-        oa->write_characters(
+        oa->write_characters(reinterpret_cast<const CharType*>(name.c_str()), name.size() + 1u);
-            reinterpret_cast<const CharType*>(name.c_str()),
-            name.size() + 1u);
     }
 
     /*!
     @brief Writes a BSON element with key @a name and boolean value @a value
     */
-    void write_bson_boolean(const string_t& name,
+    void write_bson_boolean(const string_t& name, const bool value)
-                            const bool value)
     {
         write_bson_entry_header(name, 0x08);
         oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
@@ -994,8 +966,7 @@ class binary_writer
     /*!
     @brief Writes a BSON element with key @a name and double value @a value
     */
-    void write_bson_double(const string_t& name,
+    void write_bson_double(const string_t& name, const double value)
-                           const double value)
     {
         write_bson_entry_header(name, 0x01);
         write_number<double>(value, true);
@@ -1012,15 +983,12 @@ class binary_writer
     /*!
     @brief Writes a BSON element with key @a name and string value @a value
     */
-    void write_bson_string(const string_t& name,
+    void write_bson_string(const string_t& name, const string_t& value)
-                           const string_t& value)
     {
         write_bson_entry_header(name, 0x02);
 
         write_number<std::int32_t>(static_cast<std::int32_t>(value.size() + 1ul), true);
-        oa->write_characters(
+        oa->write_characters(reinterpret_cast<const CharType*>(value.c_str()), value.size() + 1);
-            reinterpret_cast<const CharType*>(value.c_str()),
-            value.size() + 1);
     }
 
     /*!
@@ -1036,16 +1004,14 @@ class binary_writer
     */
     static std::size_t calc_bson_integer_size(const std::int64_t value)
     {
-        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)() ? sizeof(std::int32_t)
-               ? sizeof(std::int32_t)
                                                                                                                           : sizeof(std::int64_t);
     }
 
     /*!
     @brief Writes a BSON element with key @a name and integer @a value
     */
-    void write_bson_integer(const string_t& name,
+    void write_bson_integer(const string_t& name, const std::int64_t value)
-                            const std::int64_t value)
     {
         if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
         {
@@ -1064,16 +1030,13 @@ class binary_writer
     */
     static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
     {
-        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)())) ? sizeof(std::int32_t) : sizeof(std::int64_t);
-               ? sizeof(std::int32_t)
-               : sizeof(std::int64_t);
     }
 
     /*!
     @brief Writes a BSON element with key @a name and unsigned @a value
     */
-    void write_bson_unsigned(const string_t& name,
+    void write_bson_unsigned(const string_t& name, const BasicJsonType& j)
-                             const BasicJsonType& j)
     {
         if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
         {
@@ -1087,15 +1050,17 @@ class binary_writer
         }
         else
         {
-            JSON_THROW(out_of_range::create(407, concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"), &j));
+            JSON_THROW(out_of_range::create(
+                407,
+                concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"),
+                &j));
         }
     }
 
     /*!
     @brief Writes a BSON element with key @a name and object @a value
     */
-    void write_bson_object_entry(const string_t& name,
+    void write_bson_object_entry(const string_t& name, const typename BasicJsonType::object_t& value)
-                                 const typename BasicJsonType::object_t& value)
     {
         write_bson_entry_header(name, 0x03);  // object
         write_bson_object(value);
@@ -1108,8 +1073,10 @@ class binary_writer
     {
         std::size_t array_index = 0ul;
 
-        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value),
-        {
+                                                                   std::end(value),
+                                                                   static_cast<std::size_t>(0),
+                                                                   [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type& el) {
                                                                        return result + calc_bson_element_size(std::to_string(array_index++), el);
                                                                    });
 
@@ -1127,8 +1094,7 @@ class binary_writer
     /*!
     @brief Writes a BSON element with key @a name and array @a value
     */
-    void write_bson_array(const string_t& name,
+    void write_bson_array(const string_t& name, const typename BasicJsonType::array_t& value)
-                          const typename BasicJsonType::array_t& value)
     {
         write_bson_entry_header(name, 0x04);  // array
         write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_array_size(value)), true);
@@ -1146,8 +1112,7 @@ class binary_writer
     /*!
     @brief Writes a BSON element with key @a name and binary value @a value
     */
-    void write_bson_binary(const string_t& name,
+    void write_bson_binary(const string_t& name, const binary_t& value)
-                           const binary_t& value)
     {
         write_bson_entry_header(name, 0x05);
 
@@ -1161,8 +1126,7 @@ class binary_writer
     @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
     @return The calculated size for the BSON document entry for @a j with the given @a name.
     */
-    static std::size_t calc_bson_element_size(const string_t& name,
+    static std::size_t calc_bson_element_size(const string_t& name, const BasicJsonType& j)
-            const BasicJsonType& j)
     {
         const auto header_size = calc_bson_entry_header_size(name, j);
         switch (j.type())
@@ -1209,8 +1173,7 @@ class binary_writer
     @param name The name to associate with the JSON entity @a j within the
                 current BSON document
     */
-    void write_bson_element(const string_t& name,
+    void write_bson_element(const string_t& name, const BasicJsonType& j)
-                            const BasicJsonType& j)
     {
         switch (j.type())
         {
@@ -1258,9 +1221,8 @@ class binary_writer
     */
     static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
     {
-        const std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
+        const std::size_t document_size =
-                                          [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+            std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0), [](size_t result, const typename BasicJsonType::object_t::value_type& el) {
-        {
                 return result += calc_bson_element_size(el.first, el.second);
             });
 
@@ -1316,11 +1278,8 @@ class binary_writer
     ////////////
 
     // UBJSON: write number (floating point)
-    template<typename NumberType, typename std::enable_if<
+    template<typename NumberType, typename std::enable_if<std::is_floating_point<NumberType>::value, int>::type = 0>
-                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n, const bool add_prefix, const bool use_bjdata)
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
     {
         if (add_prefix)
         {
@@ -1330,11 +1289,8 @@ class binary_writer
     }
 
     // UBJSON: write number (unsigned integer)
-    template<typename NumberType, typename std::enable_if<
+    template<typename NumberType, typename std::enable_if<std::is_unsigned<NumberType>::value, int>::type = 0>
-                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n, const bool add_prefix, const bool use_bjdata)
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
     {
         if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
         {
@@ -1417,12 +1373,8 @@ class binary_writer
     }
 
     // UBJSON: write number (signed integer)
-    template < typename NumberType, typename std::enable_if <
+    template<typename NumberType, typename std::enable_if<std::is_signed<NumberType>::value && !std::is_floating_point<NumberType>::value, int>::type = 0>
-                   std::is_signed<NumberType>::value&&
+    void write_number_with_ubjson_prefix(const NumberType n, const bool add_prefix, const bool use_bjdata)
-                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
     {
         if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
         {
@@ -1432,7 +1384,8 @@ class binary_writer
             }
             write_number(static_cast<std::int8_t>(n), use_bjdata);
         }
-        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n &&
+                 n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
         {
             if (add_prefix)
             {
@@ -1448,7 +1401,8 @@ class binary_writer
             }
             write_number(static_cast<std::int16_t>(n), use_bjdata);
         }
-        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n &&
+                                n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
         {
             if (add_prefix)
             {
@@ -1464,7 +1418,8 @@ class binary_writer
             }
             write_number(static_cast<std::int32_t>(n), use_bjdata);
         }
-        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n &&
+                                n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
         {
             if (add_prefix)
             {
@@ -1513,31 +1468,38 @@ class binary_writer
 
             case value_t::number_integer:
             {
-                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer &&
+                    j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
                 {
                     return 'i';
                 }
-                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer &&
+                    j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
                 {
                     return 'U';
                 }
-                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer &&
+                    j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
                 {
                     return 'I';
                 }
-                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
+                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer &&
+                                   j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
                 {
                     return 'u';
                 }
-                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer &&
+                    j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
                 {
                     return 'l';
                 }
-                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
+                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer &&
+                                   j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
                 {
                     return 'm';
                 }
-                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer &&
+                    j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
                 {
                     return 'L';
                 }
@@ -1617,9 +1579,8 @@ class binary_writer
     */
     bool write_bjdata_ndarray(const typename BasicJsonType::object_t& value, const bool use_count, const bool use_type)
     {
-        std::map<string_t, CharType> bjdtype = {{"uint8", 'U'},  {"int8", 'i'},  {"uint16", 'u'}, {"int16", 'I'},
+        std::map<string_t, CharType> bjdtype = { { "uint8", 'U' },  { "int8", 'i' },  { "uint16", 'u' }, { "int16", 'I' },  { "uint32", 'm' }, { "int32", 'l' },
-            {"uint32", 'm'}, {"int32", 'l'}, {"uint64", 'M'}, {"int64", 'L'}, {"single", 'd'}, {"double", 'D'}, {"char", 'C'}
+                                                 { "uint64", 'M' }, { "int64", 'L' }, { "single", 'd' }, { "double", 'D' }, { "char", 'C' } };
-        };
 
         string_t key = "_ArrayType_";
         auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
@@ -1761,27 +1722,24 @@ class binary_writer
     void write_compact_float(const number_float_t n, detail::input_format_t format)
     {
 #ifdef __GNUC__
-#pragma GCC diagnostic push
+    #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
+    #pragma GCC diagnostic ignored "-Wfloat-equal"
 #endif
         if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
             static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
             static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
         {
-            oa->write_character(format == detail::input_format_t::cbor
+            oa->write_character(format == detail::input_format_t::cbor ? get_cbor_float_prefix(static_cast<float>(n))
-                                ? get_cbor_float_prefix(static_cast<float>(n))
                                                                        : get_msgpack_float_prefix(static_cast<float>(n)));
             write_number(static_cast<float>(n));
         }
         else
         {
-            oa->write_character(format == detail::input_format_t::cbor
+            oa->write_character(format == detail::input_format_t::cbor ? get_cbor_float_prefix(n) : get_msgpack_float_prefix(n));
-                                ? get_cbor_float_prefix(n)
-                                : get_msgpack_float_prefix(n));
             write_number(n);
         }
 #ifdef __GNUC__
-#pragma GCC diagnostic pop
+    #pragma GCC diagnostic pop
 #endif
     }
 
@@ -1790,15 +1748,13 @@ class binary_writer
     // between uint8_t and CharType. In case CharType is not unsigned,
     // such a conversion is required to allow values greater than 128.
     // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
-    template < typename C = CharType,
+    template<typename C = CharType, enable_if_t<std::is_signed<C>::value && std::is_signed<char>::value>* = nullptr>
-               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
     static constexpr CharType to_char_type(std::uint8_t x) noexcept
     {
         return *reinterpret_cast<char*>(&x);
     }
 
-    template < typename C = CharType,
+    template<typename C = CharType, enable_if_t<std::is_signed<C>::value && std::is_unsigned<char>::value>* = nullptr>
-               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
     static CharType to_char_type(std::uint8_t x) noexcept
     {
         static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
@@ -1808,19 +1764,16 @@ class binary_writer
         return result;
     }
 
-    template<typename C = CharType,
+    template<typename C = CharType, enable_if_t<std::is_unsigned<C>::value>* = nullptr>
-             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
     static constexpr CharType to_char_type(std::uint8_t x) noexcept
     {
         return x;
     }
 
-    template < typename InputCharType, typename C = CharType,
+    template<typename InputCharType,
-               enable_if_t <
+             typename C = CharType,
-                   std::is_signed<C>::value &&
+             enable_if_t<std::is_signed<C>::value && std::is_signed<char>::value && std::is_same<char, typename std::remove_cv<InputCharType>::type>::value>* =
-                   std::is_signed<char>::value &&
+                 nullptr>
-                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
-                   > * = nullptr >
     static constexpr CharType to_char_type(InputCharType x) noexcept
     {
         return x;

include/nlohmann/detail/output/output_adapters.hpp

@@ -27,7 +27,8 @@ namespace detail
 {
 
 /// abstract output adapter interface
-template<typename CharType> struct output_adapter_protocol
+template<typename CharType>
+struct output_adapter_protocol
 {
     virtual void write_character(CharType c) = 0;
     virtual void write_characters(const CharType* s, std::size_t length) = 0;
@@ -124,15 +125,18 @@ class output_adapter
   public:
     template<typename AllocatorType = std::allocator<CharType>>
     output_adapter(std::vector<CharType, AllocatorType>& vec)
-        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
+      : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec))
+    {}
 
 #ifndef JSON_NO_IO
     output_adapter(std::basic_ostream<CharType>& s)
-        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+      : oa(std::make_shared<output_stream_adapter<CharType>>(s))
+    {}
 #endif  // JSON_NO_IO
 
     output_adapter(StringType& s)
-        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+      : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s))
+    {}
 
     operator output_adapter_t<CharType>()
     {

include/nlohmann/detail/output/serializer.hpp

@@ -16,9 +16,9 @@
 #include <cstddef>      // size_t, ptrdiff_t
 #include <cstdint>      // uint8_t
 #include <cstdio>       // snprintf
+#include <iomanip>      // setfill, setw
 #include <limits>       // numeric_limits
 #include <string>       // string, char_traits
-#include <iomanip> // setfill, setw
 #include <type_traits>  // is_same
 #include <utility>      // move
 
@@ -64,12 +64,11 @@ class serializer
     @param[in] ichar  indentation character to use
     @param[in] error_handler_  how to react on decoding errors
     */
-    serializer(output_adapter_t<char> s, const char ichar,
+    serializer(output_adapter_t<char> s, const char ichar, error_handler_t error_handler_ = error_handler_t::strict)
-               error_handler_t error_handler_ = error_handler_t::strict)
       : o(std::move(s))
       , loc(std::localeconv())
-        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+      , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(*(loc->thousands_sep)))
-        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+      , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(*(loc->decimal_point)))
       , indent_char(ichar)
       , indent_string(512, indent_char)
       , error_handler(error_handler_)
@@ -104,11 +103,7 @@ class serializer
     @param[in] indent_step       the indent level
     @param[in] current_indent    the current indent level (only used internally)
     */
-    void dump(const BasicJsonType& val,
+    void dump(const BasicJsonType& val, const bool pretty_print, const bool ensure_ascii, const unsigned int indent_step, const unsigned int current_indent = 0)
-              const bool pretty_print,
-              const bool ensure_ascii,
-              const unsigned int indent_step,
-              const unsigned int current_indent = 0)
     {
         switch (val.m_data.m_type)
         {
@@ -205,8 +200,7 @@ class serializer
                     }
 
                     // first n-1 elements
-                    for (auto i = val.m_data.m_value.array->cbegin();
+                    for (auto i = val.m_data.m_value.array->cbegin(); i != val.m_data.m_value.array->cend() - 1; ++i)
-                            i != val.m_data.m_value.array->cend() - 1; ++i)
                     {
                         o->write_characters(indent_string.c_str(), new_indent);
                         dump(*i, true, ensure_ascii, indent_step, new_indent);
@@ -227,8 +221,7 @@ class serializer
                     o->write_character('[');
 
                     // first n-1 elements
-                    for (auto i = val.m_data.m_value.array->cbegin();
+                    for (auto i = val.m_data.m_value.array->cbegin(); i != val.m_data.m_value.array->cend() - 1; ++i)
-                            i != val.m_data.m_value.array->cend() - 1; ++i)
                     {
                         dump(*i, false, ensure_ascii, indent_step, current_indent);
                         o->write_character(',');
@@ -271,8 +264,7 @@ class serializer
 
                     if (!val.m_data.m_value.binary->empty())
                     {
-                        for (auto i = val.m_data.m_value.binary->cbegin();
+                        for (auto i = val.m_data.m_value.binary->cbegin(); i != val.m_data.m_value.binary->cend() - 1; ++i)
-                                i != val.m_data.m_value.binary->cend() - 1; ++i)
                         {
                             dump_integer(*i);
                             o->write_characters(", ", 2);
@@ -302,8 +294,7 @@ class serializer
 
                     if (!val.m_data.m_value.binary->empty())
                     {
-                        for (auto i = val.m_data.m_value.binary->cbegin();
+                        for (auto i = val.m_data.m_value.binary->cbegin(); i != val.m_data.m_value.binary->cend() - 1; ++i)
-                                i != val.m_data.m_value.binary->cend() - 1; ++i)
                         {
                             dump_integer(*i);
                             o->write_character(',');
@@ -373,7 +364,7 @@ class serializer
         }
     }
 
-  JSON_PRIVATE_UNLESS_TESTED:
+    JSON_PRIVATE_UNLESS_TESTED :
     /*!
     @brief dump escaped string
 
@@ -466,14 +457,15 @@ class serializer
                                 if (codepoint <= 0xFFFF)
                                 {
                                     // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x", static_cast<std::uint16_t>(codepoint)));
-                                                                      static_cast<std::uint16_t>(codepoint)));
                                     bytes += 6;
                                 }
                                 else
                                 {
                                     // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes,
+                                                                      13,
+                                                                      "\\u%04x\\u%04x",
                                                                       static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
                                                                       static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
                                     bytes += 12;
@@ -510,7 +502,8 @@ class serializer
                     {
                         case error_handler_t::strict:
                         {
-                            JSON_THROW(type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
+                            JSON_THROW(
+                                type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
                         }
 
                         case error_handler_t::ignore:
@@ -602,7 +595,8 @@ class serializer
             {
                 case error_handler_t::strict:
                 {
-                    JSON_THROW(type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
+                    JSON_THROW(
+                        type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
                 }
 
                 case error_handler_t::ignore:
@@ -684,13 +678,13 @@ class serializer
     }
 
     // templates to avoid warnings about useless casts
-    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
+    template<typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
     bool is_negative_number(NumberType x)
     {
         return x < 0;
     }
 
-    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
+    template<typename NumberType, enable_if_t<std::is_unsigned<NumberType>::value, int> = 0>
     bool is_negative_number(NumberType /*unused*/)
     {
         return false;
@@ -705,29 +699,27 @@ class serializer
     @param[in] x  integer number (signed or unsigned) to dump
     @tparam NumberType either @a number_integer_t or @a number_unsigned_t
     */
-    template < typename NumberType, detail::enable_if_t <
+    template<typename NumberType,
-                   std::is_integral<NumberType>::value ||
+             detail::enable_if_t<std::is_integral<NumberType>::value || std::is_same<NumberType, number_unsigned_t>::value ||
-                   std::is_same<NumberType, number_unsigned_t>::value ||
+                                     std::is_same<NumberType, number_integer_t>::value || std::is_same<NumberType, binary_char_t>::value,
-                   std::is_same<NumberType, number_integer_t>::value ||
+                                 int> = 0>
-                   std::is_same<NumberType, binary_char_t>::value,
-                   int > = 0 >
     void dump_integer(NumberType x)
     {
-        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99{ {
-        {
+            { { '0', '0' } }, { { '0', '1' } }, { { '0', '2' } }, { { '0', '3' } }, { { '0', '4' } }, { { '0', '5' } }, { { '0', '6' } }, { { '0', '7' } },
-            {
+            { { '0', '8' } }, { { '0', '9' } }, { { '1', '0' } }, { { '1', '1' } }, { { '1', '2' } }, { { '1', '3' } }, { { '1', '4' } }, { { '1', '5' } },
-                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+            { { '1', '6' } }, { { '1', '7' } }, { { '1', '8' } }, { { '1', '9' } }, { { '2', '0' } }, { { '2', '1' } }, { { '2', '2' } }, { { '2', '3' } },
-                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+            { { '2', '4' } }, { { '2', '5' } }, { { '2', '6' } }, { { '2', '7' } }, { { '2', '8' } }, { { '2', '9' } }, { { '3', '0' } }, { { '3', '1' } },
-                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+            { { '3', '2' } }, { { '3', '3' } }, { { '3', '4' } }, { { '3', '5' } }, { { '3', '6' } }, { { '3', '7' } }, { { '3', '8' } }, { { '3', '9' } },
-                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+            { { '4', '0' } }, { { '4', '1' } }, { { '4', '2' } }, { { '4', '3' } }, { { '4', '4' } }, { { '4', '5' } }, { { '4', '6' } }, { { '4', '7' } },
-                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+            { { '4', '8' } }, { { '4', '9' } }, { { '5', '0' } }, { { '5', '1' } }, { { '5', '2' } }, { { '5', '3' } }, { { '5', '4' } }, { { '5', '5' } },
-                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+            { { '5', '6' } }, { { '5', '7' } }, { { '5', '8' } }, { { '5', '9' } }, { { '6', '0' } }, { { '6', '1' } }, { { '6', '2' } }, { { '6', '3' } },
-                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+            { { '6', '4' } }, { { '6', '5' } }, { { '6', '6' } }, { { '6', '7' } }, { { '6', '8' } }, { { '6', '9' } }, { { '7', '0' } }, { { '7', '1' } },
-                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+            { { '7', '2' } }, { { '7', '3' } }, { { '7', '4' } }, { { '7', '5' } }, { { '7', '6' } }, { { '7', '7' } }, { { '7', '8' } }, { { '7', '9' } },
-                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+            { { '8', '0' } }, { { '8', '1' } }, { { '8', '2' } }, { { '8', '3' } }, { { '8', '4' } }, { { '8', '5' } }, { { '8', '6' } }, { { '8', '7' } },
-                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            { { '8', '8' } }, { { '8', '9' } }, { { '9', '0' } }, { { '9', '1' } }, { { '9', '2' } }, { { '9', '3' } }, { { '9', '4' } }, { { '9', '5' } },
-            }
+            { { '9', '6' } }, { { '9', '7' } }, { { '9', '8' } }, { { '9', '9' } },
-        };
+        } };
 
         // special case for "0"
         if (x == 0)
@@ -810,9 +802,10 @@ class serializer
         // guaranteed to round-trip, using strtof and strtod, resp.
         //
         // NB: The test below works if <long double> == <double>.
-        static constexpr bool is_ieee_single_or_double
+        static constexpr bool is_ieee_single_or_double = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 &&
-            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+                                                          std::numeric_limits<number_float_t>::max_exponent == 128) ||
-              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+                                                         (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 &&
+                                                          std::numeric_limits<number_float_t>::max_exponent == 1024);
 
         dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
     }
@@ -863,10 +856,7 @@ class serializer
         o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
 
         // determine if we need to append ".0"
-        const bool value_is_int_like =
+        const bool value_is_int_like = std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1, [](char c) {
-            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
-                         [](char c)
-        {
             return c == '.' || c == 'e';
         });
 
@@ -899,32 +889,41 @@ class serializer
     */
     static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
     {
-        static const std::array<std::uint8_t, 400> utf8d =
+        static const std::array<std::uint8_t, 400> utf8d = { {
-        {
+            0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-            {
+            0,  // 00..1F
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+            0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+            0,  // 20..3F
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+            0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+            0,  // 40..5F
-                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+            0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+            0,  // 60..7F
-                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+            1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+            9,  // 80..9F
-                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+            7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7,   7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
-                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+            7,  // A0..BF
-                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+            8,   8,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+            2,  // C0..DF
-                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+            0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3,
-                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            0x3,  // E0..EF
-            }
+            0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8,
-        };
+            0x8,  // F0..FF
+            0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1,
+            0x1,  // s0..s0
+            1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1,
+            1,  // s1..s2
+            1,   2,   1,   1,   1,   1,   1,   2,   1,   2,   1,   1,   1,   1,   1,   1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1,
+            1,  // s3..s4
+            1,   2,   1,   1,   1,   1,   1,   1,   1,   2,   1,   1,   1,   1,   1,   1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1,
+            1,  // s5..s6
+            1,   3,   1,   1,   1,   1,   1,   3,   1,   3,   1,   1,   1,   1,   1,   1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+            1  // s7..s8
+        } };
 
         JSON_ASSERT(byte < utf8d.size());
         const std::uint8_t type = utf8d[byte];
 
-        codep = (state != UTF8_ACCEPT)
+        codep = (state != UTF8_ACCEPT) ? (byte & 0x3fu) | (codep << 6u) : (0xFFu >> type) & (byte);
-                ? (byte & 0x3fu) | (codep << 6u)
-                : (0xFFu >> type) & (byte);
 
         const std::size_t index = 256u + static_cast<size_t>(state) * 16u + static_cast<size_t>(type);
         JSON_ASSERT(index < utf8d.size());
@@ -963,7 +962,7 @@ class serializer
     output_adapter_t<char> o = nullptr;
 
     /// a (hopefully) large enough character buffer
-    std::array<char, 64> number_buffer{{}};
+    std::array<char, 64> number_buffer{ {} };
 
     /// the locale
     const std::lconv* loc = nullptr;
@@ -973,7 +972,7 @@ class serializer
     const char decimal_point = '\0';
 
     /// string buffer
-    std::array<char, 512> string_buffer{{}};
+    std::array<char, 512> string_buffer{ {} };
 
     /// the indentation character
     const char indent_char;

include/nlohmann/detail/string_concat.hpp

@@ -25,26 +25,26 @@ inline std::size_t concat_length()
 }
 
 template<typename... Args>
-inline std::size_t concat_length(const char* cstr, const Args& ... rest);
+inline std::size_t concat_length(const char* cstr, const Args&... rest);
 
 template<typename StringType, typename... Args>
-inline std::size_t concat_length(const StringType& str, const Args& ... rest);
+inline std::size_t concat_length(const StringType& str, const Args&... rest);
 
 template<typename... Args>
-inline std::size_t concat_length(const char /*c*/, const Args& ... rest)
+inline std::size_t concat_length(const char /*c*/, const Args&... rest)
 {
     return 1 + concat_length(rest...);
 }
 
 template<typename... Args>
-inline std::size_t concat_length(const char* cstr, const Args& ... rest)
+inline std::size_t concat_length(const char* cstr, const Args&... rest)
 {
     // cppcheck-suppress ignoredReturnValue
     return ::strlen(cstr) + concat_length(rest...);
 }
 
 template<typename StringType, typename... Args>
-inline std::size_t concat_length(const StringType& str, const Args& ... rest)
+inline std::size_t concat_length(const StringType& str, const Args&... rest)
 {
     return str.size() + concat_length(rest...);
 }
@@ -54,13 +54,13 @@ inline void concat_into(OutStringType& /*out*/)
 {}
 
 template<typename StringType, typename Arg>
-using string_can_append = decltype(std::declval<StringType&>().append(std::declval < Arg && > ()));
+using string_can_append = decltype(std::declval<StringType&>().append(std::declval<Arg&&>()));
 
 template<typename StringType, typename Arg>
 using detect_string_can_append = is_detected<string_can_append, StringType, Arg>;
 
 template<typename StringType, typename Arg>
-using string_can_append_op = decltype(std::declval<StringType&>() += std::declval < Arg && > ());
+using string_can_append_op = decltype(std::declval<StringType&>() += std::declval<Arg&&>());
 
 template<typename StringType, typename Arg>
 using detect_string_can_append_op = is_detected<string_can_append_op, StringType, Arg>;
@@ -77,64 +77,71 @@ using string_can_append_data = decltype(std::declval<StringType&>().append(std::
 template<typename StringType, typename Arg>
 using detect_string_can_append_data = is_detected<string_can_append_data, StringType, Arg>;
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && detect_string_can_append_op<OutStringType, Arg>::value, int > = 0 >
+         typename... Args,
-inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest);
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && detect_string_can_append_op<OutStringType, Arg>::value, int> = 0>
+inline void concat_into(OutStringType& out, Arg&& arg, Args&&... rest);
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
+         typename... Args,
-                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > = 0 >
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && !detect_string_can_append_op<OutStringType, Arg>::value &&
-inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+                         detect_string_can_append_iter<OutStringType, Arg>::value,
+                     int> = 0>
+inline void concat_into(OutStringType& out, const Arg& arg, Args&&... rest);
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
+         typename... Args,
-                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && !detect_string_can_append_op<OutStringType, Arg>::value &&
-                         && detect_string_can_append_data<OutStringType, Arg>::value, int > = 0 >
+                         !detect_string_can_append_iter<OutStringType, Arg>::value && detect_string_can_append_data<OutStringType, Arg>::value,
-inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+                     int> = 0>
+inline void concat_into(OutStringType& out, const Arg& arg, Args&&... rest);
 
-template<typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType, typename Arg, typename... Args, enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
-         enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
+inline void concat_into(OutStringType& out, Arg&& arg, Args&&... rest)
-inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest)
 {
     out.append(std::forward<Arg>(arg));
     concat_into(out, std::forward<Args>(rest)...);
 }
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && detect_string_can_append_op<OutStringType, Arg>::value, int > >
+         typename... Args,
-inline void concat_into(OutStringType& out, Arg&& arg, Args&& ... rest)
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && detect_string_can_append_op<OutStringType, Arg>::value, int>>
+inline void concat_into(OutStringType& out, Arg&& arg, Args&&... rest)
 {
     out += std::forward<Arg>(arg);
     concat_into(out, std::forward<Args>(rest)...);
 }
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
+         typename... Args,
-                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > >
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && !detect_string_can_append_op<OutStringType, Arg>::value &&
-inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+                         detect_string_can_append_iter<OutStringType, Arg>::value,
+                     int>>
+inline void concat_into(OutStringType& out, const Arg& arg, Args&&... rest)
 {
     out.append(arg.begin(), arg.end());
     concat_into(out, std::forward<Args>(rest)...);
 }
 
-template < typename OutStringType, typename Arg, typename... Args,
+template<typename OutStringType,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+         typename Arg,
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
+         typename... Args,
-                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+         enable_if_t<!detect_string_can_append<OutStringType, Arg>::value && !detect_string_can_append_op<OutStringType, Arg>::value &&
-                         && detect_string_can_append_data<OutStringType, Arg>::value, int > >
+                         !detect_string_can_append_iter<OutStringType, Arg>::value && detect_string_can_append_data<OutStringType, Arg>::value,
-inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+                     int>>
+inline void concat_into(OutStringType& out, const Arg& arg, Args&&... rest)
 {
     out.append(arg.data(), arg.size());
     concat_into(out, std::forward<Args>(rest)...);
 }
 
 template<typename OutStringType = std::string, typename... Args>
-inline OutStringType concat(Args && ... args)
+inline OutStringType concat(Args&&... args)
 {
     OutStringType str;
     str.reserve(concat_length(args...));

include/nlohmann/detail/string_escape.hpp

@@ -28,8 +28,7 @@ enforced with an assertion.**
 @since version 2.0.0
 */
 template<typename StringType>
-inline void replace_substring(StringType& s, const StringType& f,
+inline void replace_substring(StringType& s, const StringType& f, const StringType& t)
-                              const StringType& t)
 {
     JSON_ASSERT(!f.empty());
     for (auto pos = s.find(f);             // find first occurrence of f
@@ -49,8 +48,8 @@ inline void replace_substring(StringType& s, const StringType& f,
 template<typename StringType>
 inline StringType escape(StringType s)
 {
-    replace_substring(s, StringType{"~"}, StringType{"~0"});
+    replace_substring(s, StringType{ "~" }, StringType{ "~0" });
-    replace_substring(s, StringType{"/"}, StringType{"~1"});
+    replace_substring(s, StringType{ "/" }, StringType{ "~1" });
     return s;
 }
 
@@ -64,8 +63,8 @@ inline StringType escape(StringType s)
 template<typename StringType>
 static void unescape(StringType& s)
 {
-    replace_substring(s, StringType{"~1"}, StringType{"/"});
+    replace_substring(s, StringType{ "~1" }, StringType{ "/" });
-    replace_substring(s, StringType{"~0"}, StringType{"~"});
+    replace_substring(s, StringType{ "~0" }, StringType{ "~" });
 }
 
 }  // namespace detail

include/nlohmann/detail/value_t.hpp

@@ -78,17 +78,22 @@ Returns an ordering that is similar to Python:
 @since version 1.0.0
 */
 #if JSON_HAS_THREE_WAY_COMPARISON
-    inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept // *NOPAD*
+inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept  // *NOPAD*
 #else
-    inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
 #endif
 {
-    static constexpr std::array<std::uint8_t, 9> order = {{
+    static constexpr std::array<std::uint8_t, 9> order = { {
-            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+        0 /* null */,
-            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+        3 /* object */,
+        4 /* array */,
+        5 /* string */,
+        1 /* boolean */,
+        2 /* integer */,
+        2 /* unsigned */,
+        2 /* float */,
         6 /* binary */
-        }
+    } };
-    };
 
     const auto l_index = static_cast<std::size_t>(lhs);
     const auto r_index = static_cast<std::size_t>(rhs);

include/nlohmann/json_fwd.hpp

@@ -36,16 +36,15 @@ struct adl_serializer;
 
 /// a class to store JSON values
 /// @sa https://json.nlohmann.me/api/basic_json/
-template<template<typename U, typename V, typename... Args> class ObjectType =
+template<template<typename U, typename V, typename... Args> class ObjectType = std::map,
-         std::map,
          template<typename U, typename... Args> class ArrayType = std::vector,
-         class StringType = std::string, class BooleanType = bool,
+         class StringType = std::string,
+         class BooleanType = bool,
          class NumberIntegerType = std::int64_t,
          class NumberUnsignedType = std::uint64_t,
          class NumberFloatType = double,
          template<typename U> class AllocatorType = std::allocator,
-         template<typename T, typename SFINAE = void> class JSONSerializer =
+         template<typename T, typename SFINAE = void> class JSONSerializer = adl_serializer,
-         adl_serializer,
          class BinaryType = std::vector<std::uint8_t>,  // cppcheck-suppress syntaxError
          class CustomBaseClass = void>
 class basic_json;

include/nlohmann/ordered_map.hpp

@@ -24,9 +24,8 @@ NLOHMANN_JSON_NAMESPACE_BEGIN
 
 /// ordered_map: a minimal map-like container that preserves insertion order
 /// for use within nlohmann::basic_json<ordered_map>
-template <class Key, class T, class IgnoredLess = std::less<Key>,
+template<class Key, class T, class IgnoredLess = std::less<Key>, class Allocator = std::allocator<std::pair<const Key, T>>>
-          class Allocator = std::allocator<std::pair<const Key, T>>>
+struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
-                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
 {
     using key_type = Key;
     using mapped_type = T;
@@ -43,13 +42,19 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
 
     // Explicit constructors instead of `using Container::Container`
     // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
-    ordered_map() noexcept(noexcept(Container())) : Container{} {}
+    ordered_map() noexcept(noexcept(Container()))
-    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc))) : Container{alloc} {}
+      : Container{}
-    template <class It>
+    {}
+    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc)))
+      : Container{ alloc }
+    {}
+    template<class It>
     ordered_map(It first, It last, const Allocator& alloc = Allocator())
-        : Container{first, last, alloc} {}
+      : Container{ first, last, alloc }
-    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator() )
+    {}
-        : Container{init, alloc} {}
+    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator())
+      : Container{ init, alloc }
+    {}
 
     std::pair<iterator, bool> emplace(const key_type& key, T&& t)
     {
@@ -57,26 +62,25 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         {
             if (m_compare(it->first, key))
             {
-                return {it, false};
+                return { it, false };
             }
         }
         Container::emplace_back(key, std::forward<T>(t));
-        return {std::prev(this->end()), true};
+        return { std::prev(this->end()), true };
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    std::pair<iterator, bool> emplace(KeyType&& key, T&& t)
-    std::pair<iterator, bool> emplace(KeyType && key, T && t)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
             if (m_compare(it->first, key))
             {
-                return {it, false};
+                return { it, false };
             }
         }
         Container::emplace_back(std::forward<KeyType>(key), std::forward<T>(t));
-        return {std::prev(this->end()), true};
+        return { std::prev(this->end()), true };
     }
 
     T& operator[](const key_type& key)
@@ -84,9 +88,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return emplace(key, T{}).first->second;
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T& operator[](KeyType&& key)
-    T & operator[](KeyType && key)
     {
         return emplace(std::forward<KeyType>(key), T{}).first->second;
     }
@@ -96,9 +99,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return at(key);
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T& operator[](KeyType&& key) const
-    const T & operator[](KeyType && key) const
     {
         return at(std::forward<KeyType>(key));
     }
@@ -116,9 +118,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         JSON_THROW(std::out_of_range("key not found"));
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T& at(KeyType&& key)  // NOLINT(cppcoreguidelines-missing-std-forward)
-    T & at(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
@@ -144,9 +145,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         JSON_THROW(std::out_of_range("key not found"));
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T& at(KeyType&& key) const  // NOLINT(cppcoreguidelines-missing-std-forward)
-    const T & at(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
@@ -169,7 +169,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
                 for (auto next = it; ++next != this->end(); ++it)
                 {
                     it->~value_type();  // Destroy but keep allocation
-                    new (&*it) value_type{std::move(*next)};
+                    new (&*it) value_type{ std::move(*next) };
                 }
                 Container::pop_back();
                 return 1;
@@ -178,9 +178,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return 0;
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type erase(KeyType&& key)  // NOLINT(cppcoreguidelines-missing-std-forward)
-    size_type erase(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
@@ -190,7 +189,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
                 for (auto next = it; ++next != this->end(); ++it)
                 {
                     it->~value_type();  // Destroy but keep allocation
-                    new (&*it) value_type{std::move(*next)};
+                    new (&*it) value_type{ std::move(*next) };
                 }
                 Container::pop_back();
                 return 1;
@@ -237,7 +236,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
         {
             it->~value_type();                                                      // destroy but keep allocation
-            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
+            new (&*it) value_type{ std::move(*std::next(it, elements_affected)) };  // "move" next element to it
         }
 
         // [ a, b, c, d, h, i, j, h, i, j ]
@@ -269,9 +268,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return 0;
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type count(KeyType&& key) const  // NOLINT(cppcoreguidelines-missing-std-forward)
-    size_type count(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
@@ -295,9 +293,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return Container::end();
     }
 
-    template<class KeyType, detail::enable_if_t<
+    template<class KeyType, detail::enable_if_t<detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    iterator find(KeyType&& key)  // NOLINT(cppcoreguidelines-missing-std-forward)
-    iterator find(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
@@ -321,27 +318,27 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return Container::end();
     }
 
-    std::pair<iterator, bool> insert( value_type&& value )
+    std::pair<iterator, bool> insert(value_type&& value)
     {
         return emplace(value.first, std::move(value.second));
     }
 
-    std::pair<iterator, bool> insert( const value_type& value )
+    std::pair<iterator, bool> insert(const value_type& value)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
         {
             if (m_compare(it->first, value.first))
             {
-                return {it, false};
+                return { it, false };
             }
         }
         Container::push_back(value);
-        return {--this->end(), true};
+        return { --this->end(), true };
     }
 
     template<typename InputIt>
-    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
+    using require_input_iter =
-            std::input_iterator_tag>::value>::type;
+        typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category, std::input_iterator_tag>::value>::type;
 
     template<typename InputIt, typename = require_input_iter<InputIt>>
     void insert(InputIt first, InputIt last)
@@ -352,7 +349,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         }
     }
 
-private:
+  private:
     JSON_NO_UNIQUE_ADDRESS key_compare m_compare = key_compare();
 };
 

single_include/nlohmann/json_fwd.hpp

@@ -24,8 +24,6 @@
 // SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT
 
-
-
 // This file contains all macro definitions affecting or depending on the ABI
 
 #ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
@@ -65,59 +63,44 @@
 #endif
 
 // Construct the namespace ABI tags component
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi ## a ## b
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi##a##b
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) \
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
-    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
 
-#define NLOHMANN_JSON_ABI_TAGS                                       \
+#define NLOHMANN_JSON_ABI_TAGS NLOHMANN_JSON_ABI_TAGS_CONCAT(NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS, NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
-    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
-            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
-            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
 
 // Construct the namespace version component
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) _v##major##_##minor##_##patch
-    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
 
 #if NLOHMANN_JSON_NAMESPACE_NO_VERSION
-#define NLOHMANN_JSON_NAMESPACE_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_VERSION
 #else
-#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    #define NLOHMANN_JSON_NAMESPACE_VERSION                                                                                                                    \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+        NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, NLOHMANN_JSON_VERSION_MINOR, NLOHMANN_JSON_VERSION_PATCH)
-                                           NLOHMANN_JSON_VERSION_MINOR, \
-                                           NLOHMANN_JSON_VERSION_PATCH)
 #endif
 
 // Combine namespace components
-#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a##b
-#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
-    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
 
 #ifndef NLOHMANN_JSON_NAMESPACE
-#define NLOHMANN_JSON_NAMESPACE               \
+    #define NLOHMANN_JSON_NAMESPACE nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT(NLOHMANN_JSON_ABI_TAGS, NLOHMANN_JSON_NAMESPACE_VERSION)
-    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
-            NLOHMANN_JSON_ABI_TAGS,           \
-            NLOHMANN_JSON_NAMESPACE_VERSION)
 #endif
 
 #ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
-#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    #define NLOHMANN_JSON_NAMESPACE_BEGIN                                                                                                                      \
         namespace nlohmann                                                                                                                                     \
         {                                                                                                                                                      \
-    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+        inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT(NLOHMANN_JSON_ABI_TAGS, NLOHMANN_JSON_NAMESPACE_VERSION)                                               \
-                NLOHMANN_JSON_ABI_TAGS,              \
-                NLOHMANN_JSON_NAMESPACE_VERSION)     \
         {
 #endif
 
 #ifndef NLOHMANN_JSON_NAMESPACE_END
-#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    #define NLOHMANN_JSON_NAMESPACE_END                                                                                                                        \
         }  /* namespace (inline namespace) NOLINT(readability/namespace) */                                                                                    \
         }  // namespace nlohmann
 #endif
 
-
 /*!
 @brief namespace for Niels Lohmann
 @see https://github.com/nlohmann
@@ -137,16 +120,15 @@ struct adl_serializer;
 
 /// a class to store JSON values
 /// @sa https://json.nlohmann.me/api/basic_json/
-template<template<typename U, typename V, typename... Args> class ObjectType =
+template<template<typename U, typename V, typename... Args> class ObjectType = std::map,
-         std::map,
          template<typename U, typename... Args> class ArrayType = std::vector,
-         class StringType = std::string, class BooleanType = bool,
+         class StringType = std::string,
+         class BooleanType = bool,
          class NumberIntegerType = std::int64_t,
          class NumberUnsignedType = std::uint64_t,
          class NumberFloatType = double,
          template<typename U> class AllocatorType = std::allocator,
-         template<typename T, typename SFINAE = void> class JSONSerializer =
+         template<typename T, typename SFINAE = void> class JSONSerializer = adl_serializer,
-         adl_serializer,
          class BinaryType = std::vector<std::uint8_t>,  // cppcheck-suppress syntaxError
          class CustomBaseClass = void>
 class basic_json;

tests/abi/config/custom.cpp

@@ -12,7 +12,9 @@
 
 // define custom namespace
 #define NLOHMANN_JSON_NAMESPACE nlohmann  // this line may be omitted
-#define NLOHMANN_JSON_NAMESPACE_BEGIN namespace nlohmann {
+#define NLOHMANN_JSON_NAMESPACE_BEGIN                                                                                                                          \
+    namespace nlohmann                                                                                                                                         \
+    {
 #define NLOHMANN_JSON_NAMESPACE_END }
 #include <nlohmann/json_fwd.hpp>
 
@@ -25,7 +27,7 @@ TEST_CASE("custom namespace")
         std::string expected = "nlohmann::basic_json";
 
         // fallback for Clang
-        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+        const std::string ns{ STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json" };
 
         CHECK(namespace_name<nlohmann::json>(ns) == expected);
     }

tests/abi/config/default.cpp

@@ -20,20 +20,20 @@ TEST_CASE("default namespace")
     {
         std::string expected = "nlohmann::json_abi";
 
-#if JSON_DIAGNOSTICS
+    #if JSON_DIAGNOSTICS
         expected += "_diag";
-#endif
+    #endif
 
-#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
         expected += "_ldvcmp";
-#endif
+    #endif
 
         expected += "_v" STRINGIZE(NLOHMANN_JSON_VERSION_MAJOR);
         expected += "_" STRINGIZE(NLOHMANN_JSON_VERSION_MINOR);
         expected += "_" STRINGIZE(NLOHMANN_JSON_VERSION_PATCH) "::basic_json";
 
         // fallback for Clang
-        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+        const std::string ns{ STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json" };
 
         CHECK(namespace_name<nlohmann::json>(ns) == expected);
     }

tests/abi/config/noversion.cpp

@@ -21,18 +21,18 @@ TEST_CASE("default namespace without version component")
     {
         std::string expected = "nlohmann::json_abi";
 
-#if JSON_DIAGNOSTICS
+    #if JSON_DIAGNOSTICS
         expected += "_diag";
-#endif
+    #endif
 
-#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
         expected += "_ldvcmp";
-#endif
+    #endif
 
         expected += "::basic_json";
 
         // fallback for Clang
-        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+        const std::string ns{ STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json" };
 
         CHECK(namespace_name<nlohmann::json>(ns) == expected);
     }

tests/abi/diag/diag_off.cpp

@@ -25,6 +25,6 @@ std::size_t json_sizeof_diag_off_explicit()
 void json_at_diag_off()
 {
     using nlohmann::json;
-    json j = json{{"foo", json::object()}};
+    json j = json{ { "foo", json::object() } };
     j.at(json::json_pointer("/foo/bar"));
 }

tests/abi/diag/diag_on.cpp

@@ -25,6 +25,6 @@ std::size_t json_sizeof_diag_on_explicit()
 void json_at_diag_on()
 {
     using nlohmann::json;
-    json j = json{{"foo", json::object()}};
+    json j = json{ { "foo", json::object() } };
     j.at(json::json_pointer("/foo/bar"));
 }

tests/benchmarks/src/benchmarks.cpp

@@ -6,12 +6,12 @@
 // SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT
 
-#include <benchmark/benchmark.h>
-#include <nlohmann/json.hpp>
 #include <fstream>
 #include <numeric>
-#include <vector>
 #include <test_data.hpp>
+#include <vector>
+#include <nlohmann/json.hpp>
+#include <benchmark/benchmark.h>
 
 using json = nlohmann::json;
 
@@ -162,8 +162,8 @@ static void BinaryToCbor(benchmark::State& state)
         ++it;
     }
 
-    json::binary_t bin{in};
+    json::binary_t bin{ in };
-    json j{{"type", "binary"}, {"data", bin}};
+    json j{ { "type", "binary" }, { "data", bin } };
 
     while (state.KeepRunning())
     {

tests/cmake_target_include_directories/project/Bar.hpp

@@ -6,7 +6,8 @@
 // SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT
 
-#include <nlohmann/json.hpp>
 #include "Foo.hpp"
+#include <nlohmann/json.hpp>
 
-class Bar : public Foo {};
+class Bar : public Foo
+{};

tests/cmake_target_include_directories/project/Foo.hpp

@@ -9,4 +9,5 @@
 #pragma once
 #include <nlohmann/json.hpp>
 
-class Foo {};
+class Foo
+{};

tests/cuda_example/json_cuda.cu

@@ -10,7 +10,7 @@
 
 int main()
 {
-    nlohmann::ordered_json json = {"Test"};
+    nlohmann::ordered_json json = { "Test" };
     json.dump();
 
     // regression for #3013 (ordered_json::reset() compile error with nvcc)

tests/src/fuzzer-driver_afl.cpp

@@ -12,9 +12,9 @@ an implementation of the `LLVMFuzzerTestOneInput` function which processes a
 passed byte array.
 */
 
-#include <vector>    // for vector
 #include <cstdint>   // for uint8_t
 #include <iostream>  // for cin
+#include <vector>    // for vector
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
 

tests/src/make_test_data_available.hpp

@@ -9,9 +9,9 @@
 #pragma once
 
 #include <cstdio>  // fopen, fclose, FILE
+#include <doctest.h>
 #include <memory>  // unique_ptr
 #include <test_data.hpp>
-#include <doctest.h>
 
 namespace utils
 {
@@ -24,7 +24,10 @@ inline bool check_testsuite_downloaded()
 
 TEST_CASE("check test suite is downloaded")
 {
-    REQUIRE_MESSAGE(utils::check_testsuite_downloaded(), "Test data not found in '" TEST_DATA_DIRECTORY "'. Please execute target 'download_test_data' before running this test suite. See <https://github.com/nlohmann/json#execute-unit-tests> for more information.");
+    REQUIRE_MESSAGE(
+        utils::check_testsuite_downloaded(),
+        "Test data not found in '" TEST_DATA_DIRECTORY
+        "'. Please execute target 'download_test_data' before running this test suite. See <https://github.com/nlohmann/json#execute-unit-tests> for more information.");
 }
 
 }  // namespace utils

tests/src/unit-32bit.cpp

@@ -14,7 +14,7 @@ using nlohmann::json;
 #include <climits>  // SIZE_MAX
 #include <limits>   // numeric_limits
 
-template <typename OfType, typename T, bool MinInRange, bool MaxInRange>
+template<typename OfType, typename T, bool MinInRange, bool MaxInRange>
 struct trait_test_arg
 {
     using of_type = OfType;
@@ -92,10 +92,10 @@ TEST_CASE("32bit")
     REQUIRE(SIZE_MAX == 0xffffffff);
 }
 
-TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test, \
+TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test,
-                          trait_test_arg<std::size_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::size_t, std::int32_t, false, true>,
-                          trait_test_arg<std::size_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::size_t, std::uint32_t, true, true>,
-                          trait_test_arg<std::size_t, std::int64_t, false, false>, \
+                          trait_test_arg<std::size_t, std::int64_t, false, false>,
                           trait_test_arg<std::size_t, std::uint64_t, true, false>);
 
 TEST_CASE("BJData")
@@ -106,27 +106,35 @@ TEST_CASE("BJData")
         {
             SECTION("optimized array: negative size")
             {
-                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+                std::vector<uint8_t> const vM = { '[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']' };
-                std::vector<uint8_t> const vMX = {'[', '$', 'U', '#', '[', 'M', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 'U', 0x01, ']'};
+                std::vector<uint8_t> const vMX = { '[', '$', 'U', '#', '[', 'M', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 'U', 0x01, ']' };
 
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM),
+                                     "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow",
+                                     json::out_of_range&);
                 CHECK(json::from_bjdata(vM, true, false).is_discarded());
 
-                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vMX), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vMX),
+                                     "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow",
+                                     json::out_of_range&);
                 CHECK(json::from_bjdata(vMX, true, false).is_discarded());
             }
 
             SECTION("optimized array: integer value overflow")
             {
-                std::vector<uint8_t> const vL = {'[', '#', 'L', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F};
+                std::vector<uint8_t> const vL = { '[', '#', 'L', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F };
-                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+                std::vector<uint8_t> const vM = { '[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']' };
 
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL),
+                                     "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow",
+                                     json::out_of_range&);
                 CHECK(json::from_bjdata(vL, true, false).is_discarded());
 
-                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM),
+                                     "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow",
+                                     json::out_of_range&);
                 CHECK(json::from_bjdata(vM, true, false).is_discarded());
             }
         }

tests/src/unit-algorithms.cpp

@@ -14,43 +14,37 @@ using nlohmann::json;
 
 TEST_CASE("algorithms")
 {
-    json j_array = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz"};
+    json j_array = { 13, 29, 3, { { "one", 1 }, { "two", 2 } }, true, false, { 1, 2, 3 }, "foo", "baz" };
-    json j_object = {{"one", 1}, {"two", 2}};
+    json j_object = { { "one", 1 }, { "two", 2 } };
 
     SECTION("non-modifying sequence operations")
     {
         SECTION("std::all_of")
         {
-            CHECK(std::all_of(j_array.begin(), j_array.end(), [](const json & value)
+            CHECK(std::all_of(j_array.begin(), j_array.end(), [](const json& value) {
-            {
                 return !value.empty();
             }));
-            CHECK(std::all_of(j_object.begin(), j_object.end(), [](const json & value)
+            CHECK(std::all_of(j_object.begin(), j_object.end(), [](const json& value) {
-            {
                 return value.type() == json::value_t::number_integer;
             }));
         }
 
         SECTION("std::any_of")
         {
-            CHECK(std::any_of(j_array.begin(), j_array.end(), [](const json & value)
+            CHECK(std::any_of(j_array.begin(), j_array.end(), [](const json& value) {
-            {
                 return value.is_string() && value.get<std::string>() == "foo";
             }));
-            CHECK(std::any_of(j_object.begin(), j_object.end(), [](const json & value)
+            CHECK(std::any_of(j_object.begin(), j_object.end(), [](const json& value) {
-            {
                 return value.get<int>() > 1;
             }));
         }
 
         SECTION("std::none_of")
         {
-            CHECK(std::none_of(j_array.begin(), j_array.end(), [](const json & value)
+            CHECK(std::none_of(j_array.begin(), j_array.end(), [](const json& value) {
-            {
                 return value.empty();
             }));
-            CHECK(std::none_of(j_object.begin(), j_object.end(), [](const json & value)
+            CHECK(std::none_of(j_object.begin(), j_object.end(), [](const json& value) {
-            {
                 return value.get<int>() <= 0;
             }));
         }
@@ -61,8 +55,7 @@ TEST_CASE("algorithms")
             {
                 int sum = 0;
 
-                std::for_each(j_array.cbegin(), j_array.cend(), [&sum](const json & value)
+                std::for_each(j_array.cbegin(), j_array.cend(), [&sum](const json& value) {
-                {
                     if (value.is_number())
                     {
                         sum += static_cast<int>(value);
@@ -74,8 +67,7 @@ TEST_CASE("algorithms")
 
             SECTION("writing")
             {
-                auto add17 = [](json & value)
+                auto add17 = [](json& value) {
-                {
                     if (value.is_array())
                     {
                         value.push_back(17);
@@ -84,7 +76,7 @@ TEST_CASE("algorithms")
 
                 std::for_each(j_array.begin(), j_array.end(), add17);
 
-                CHECK(j_array[6] == json({1, 2, 3, 17}));
+                CHECK(j_array[6] == json({ 1, 2, 3, 17 }));
             }
         }
 
@@ -95,22 +87,20 @@ TEST_CASE("algorithms")
 
         SECTION("std::count_if")
         {
-            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json & value)
+            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json& value) {
-            {
                       return (value.is_number());
                   }) == 3);
-            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json&)
+            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json&) {
-            {
                       return true;
                   }) == 9);
         }
 
         SECTION("std::mismatch")
         {
-            json j_array2 = {13, 29, 3, {{"one", 1}, {"two", 2}, {"three", 3}}, true, false, {1, 2, 3}, "foo", "baz"};
+            json j_array2 = { 13, 29, 3, { { "one", 1 }, { "two", 2 }, { "three", 3 } }, true, false, { 1, 2, 3 }, "foo", "baz" };
             auto res = std::mismatch(j_array.begin(), j_array.end(), j_array2.begin());
-            CHECK(*res.first == json({{"one", 1}, {"two", 2}}));
+            CHECK(*res.first == json({ { "one", 1 }, { "two", 2 } }));
-            CHECK(*res.second == json({{"one", 1}, {"two", 2}, {"three", 3}}));
+            CHECK(*res.second == json({ { "one", 1 }, { "two", 2 }, { "three", 3 } }));
         }
 
         SECTION("std::equal")
@@ -125,11 +115,9 @@ TEST_CASE("algorithms")
             SECTION("using user-defined comparison")
             {
                 // compare objects only by size of its elements
-                json j_array2 = {13, 29, 3, {"Hello", "World"}, true, false, {{"one", 1}, {"two", 2}, {"three", 3}}, "foo", "baz"};
+                json j_array2 = { 13, 29, 3, { "Hello", "World" }, true, false, { { "one", 1 }, { "two", 2 }, { "three", 3 } }, "foo", "baz" };
                 CHECK(!std::equal(j_array.begin(), j_array.end(), j_array2.begin()));
-                CHECK(std::equal(j_array.begin(), j_array.end(), j_array2.begin(),
+                CHECK(std::equal(j_array.begin(), j_array.end(), j_array2.begin(), [](const json& a, const json& b) {
-                                 [](const json & a, const json & b)
-                {
                     return (a.size() == b.size());
                 }));
             }
@@ -143,9 +131,7 @@ TEST_CASE("algorithms")
 
         SECTION("std::find_if")
         {
-            auto it = std::find_if(j_array.begin(), j_array.end(),
+            auto it = std::find_if(j_array.begin(), j_array.end(), [](const json& value) {
-                                   [](const json & value)
-            {
                 return value.is_boolean();
             });
             CHECK(std::distance(j_array.begin(), it) == 4);
@@ -153,9 +139,7 @@ TEST_CASE("algorithms")
 
         SECTION("std::find_if_not")
         {
-            auto it = std::find_if_not(j_array.begin(), j_array.end(),
+            auto it = std::find_if_not(j_array.begin(), j_array.end(), [](const json& value) {
-                                       [](const json & value)
-            {
                 return value.is_number();
             });
             CHECK(std::distance(j_array.begin(), it) == 3);
@@ -164,9 +148,7 @@ TEST_CASE("algorithms")
         SECTION("std::adjacent_find")
         {
             CHECK(std::adjacent_find(j_array.begin(), j_array.end()) == j_array.end());
-            CHECK(std::adjacent_find(j_array.begin(), j_array.end(),
+            CHECK(std::adjacent_find(j_array.begin(), j_array.end(), [](const json& v1, const json& v2) {
-                                     [](const json & v1, const json & v2)
-            {
                       return v1.type() == v2.type();
                   }) == j_array.begin());
         }
@@ -177,19 +159,18 @@ TEST_CASE("algorithms")
         SECTION("std::reverse")
         {
             std::reverse(j_array.begin(), j_array.end());
-            CHECK(j_array == json({"baz", "foo", {1, 2, 3}, false, true, {{"one", 1}, {"two", 2}}, 3, 29, 13}));
+            CHECK(j_array == json({ "baz", "foo", { 1, 2, 3 }, false, true, { { "one", 1 }, { "two", 2 } }, 3, 29, 13 }));
         }
 
         SECTION("std::rotate")
         {
             std::rotate(j_array.begin(), j_array.begin() + 1, j_array.end());
-            CHECK(j_array == json({29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", 13}));
+            CHECK(j_array == json({ 29, 3, { { "one", 1 }, { "two", 2 } }, true, false, { 1, 2, 3 }, "foo", "baz", 13 }));
         }
 
         SECTION("std::partition")
         {
-            auto it = std::partition(j_array.begin(), j_array.end(), [](const json & v)
+            auto it = std::partition(j_array.begin(), j_array.end(), [](const json& v) {
-            {
                 return v.is_string();
             });
             CHECK(std::distance(j_array.begin(), it) == 2);
@@ -203,33 +184,34 @@ TEST_CASE("algorithms")
         {
             SECTION("with standard comparison")
             {
-                json j = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", nullptr};
+                json j = { 13, 29, 3, { { "one", 1 }, { "two", 2 } }, true, false, { 1, 2, 3 }, "foo", "baz", nullptr };
                 std::sort(j.begin(), j.end());
-                CHECK(j == json({nullptr, false, true, 3, 13, 29, {{"one", 1}, {"two", 2}}, {1, 2, 3}, "baz", "foo"}));
+                CHECK(j == json({ nullptr, false, true, 3, 13, 29, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3 }, "baz", "foo" }));
             }
 
             SECTION("with user-defined comparison")
             {
-                json j = {3, {{"one", 1}, {"two", 2}}, {1, 2, 3}, nullptr};
+                json j = { 3, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3 }, nullptr };
-                std::sort(j.begin(), j.end(), [](const json & a, const json & b)
+                std::sort(j.begin(), j.end(), [](const json& a, const json& b) {
-                {
                     return a.size() < b.size();
                 });
-                CHECK(j == json({nullptr, 3, {{"one", 1}, {"two", 2}}, {1, 2, 3}}));
+                CHECK(j == json({ nullptr, 3, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3 } }));
             }
 
             SECTION("sorting an object")
             {
-                json j({{"one", 1}, {"two", 2}});
+                json j({ { "one", 1 }, { "two", 2 } });
-                CHECK_THROWS_WITH_AS(std::sort(j.begin(), j.end()), "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(std::sort(j.begin(), j.end()),
+                                     "[json.exception.invalid_iterator.209] cannot use offsets with object iterators",
+                                     json::invalid_iterator&);
             }
         }
 
         SECTION("std::partial_sort")
         {
-            json j = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", nullptr};
+            json j = { 13, 29, 3, { { "one", 1 }, { "two", 2 } }, true, false, { 1, 2, 3 }, "foo", "baz", nullptr };
             std::partial_sort(j.begin(), j.begin() + 4, j.end());
-            CHECK(j == json({nullptr, false, true, 3, {{"one", 1}, {"two", 2}}, 29, {1, 2, 3}, "foo", "baz", 13}));
+            CHECK(j == json({ nullptr, false, true, 3, { { "one", 1 }, { "two", 2 } }, 29, { 1, 2, 3 }, "foo", "baz", 13 }));
         }
     }
 
@@ -238,53 +220,53 @@ TEST_CASE("algorithms")
         SECTION("std::merge")
         {
             {
-                json j1 = {2, 4, 6, 8};
+                json j1 = { 2, 4, 6, 8 };
-                json j2 = {1, 2, 3, 5, 7};
+                json j2 = { 1, 2, 3, 5, 7 };
                 json j3;
 
                 std::merge(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
-                CHECK(j3 == json({1, 2, 2, 3, 4, 5, 6, 7, 8}));
+                CHECK(j3 == json({ 1, 2, 2, 3, 4, 5, 6, 7, 8 }));
             }
         }
 
         SECTION("std::set_difference")
         {
-            json j1 = {1, 2, 3, 4, 5, 6, 7, 8};
+            json j1 = { 1, 2, 3, 4, 5, 6, 7, 8 };
-            json j2 = {1, 2, 3, 5, 7};
+            json j2 = { 1, 2, 3, 5, 7 };
             json j3;
 
             std::set_difference(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
-            CHECK(j3 == json({4, 6, 8}));
+            CHECK(j3 == json({ 4, 6, 8 }));
         }
 
         SECTION("std::set_intersection")
         {
-            json j1 = {1, 2, 3, 4, 5, 6, 7, 8};
+            json j1 = { 1, 2, 3, 4, 5, 6, 7, 8 };
-            json j2 = {1, 2, 3, 5, 7};
+            json j2 = { 1, 2, 3, 5, 7 };
             json j3;
 
             std::set_intersection(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
-            CHECK(j3 == json({1, 2, 3, 5, 7}));
+            CHECK(j3 == json({ 1, 2, 3, 5, 7 }));
         }
 
         SECTION("std::set_union")
         {
-            json j1 = {2, 4, 6, 8};
+            json j1 = { 2, 4, 6, 8 };
-            json j2 = {1, 2, 3, 5, 7};
+            json j2 = { 1, 2, 3, 5, 7 };
             json j3;
 
             std::set_union(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
-            CHECK(j3 == json({1, 2, 3, 4, 5, 6, 7, 8}));
+            CHECK(j3 == json({ 1, 2, 3, 4, 5, 6, 7, 8 }));
         }
 
         SECTION("std::set_symmetric_difference")
         {
-            json j1 = {2, 4, 6, 8};
+            json j1 = { 2, 4, 6, 8 };
-            json j2 = {1, 2, 3, 5, 7};
+            json j2 = { 1, 2, 3, 5, 7 };
             json j3;
 
             std::set_symmetric_difference(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
-            CHECK(j3 == json({1, 3, 4, 5, 6, 7, 8}));
+            CHECK(j3 == json({ 1, 3, 4, 5, 6, 7, 8 }));
         }
     }
 
@@ -293,29 +275,29 @@ TEST_CASE("algorithms")
         std::make_heap(j_array.begin(), j_array.end());
         CHECK(std::is_heap(j_array.begin(), j_array.end()));
         std::sort_heap(j_array.begin(), j_array.end());
-        CHECK(j_array == json({false, true, 3, 13, 29, {{"one", 1}, {"two", 2}}, {1, 2, 3}, "baz", "foo"}));
+        CHECK(j_array == json({ false, true, 3, 13, 29, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3 }, "baz", "foo" }));
     }
 
     SECTION("iota")
     {
         SECTION("int")
         {
-            json json_arr = {0, 5, 2, 4, 10, 20, 30, 40, 50, 1};
+            json json_arr = { 0, 5, 2, 4, 10, 20, 30, 40, 50, 1 };
             std::iota(json_arr.begin(), json_arr.end(), 0);
-            CHECK(json_arr == json({0, 1, 2, 3, 4, 5, 6, 7, 8, 9}));
+            CHECK(json_arr == json({ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }));
         }
         SECTION("double")
         {
-            json json_arr = {0.5, 1.5, 1.3, 4.1, 10.2, 20.5, 30.6, 40.1, 50.22, 1.5};
+            json json_arr = { 0.5, 1.5, 1.3, 4.1, 10.2, 20.5, 30.6, 40.1, 50.22, 1.5 };
             std::iota(json_arr.begin(), json_arr.end(), 0.5);
-            CHECK(json_arr == json({0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5}));
+            CHECK(json_arr == json({ 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5 }));
         }
 
         SECTION("char")
         {
-            json json_arr = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '0', '1'};
+            json json_arr = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '0', '1' };
             std::iota(json_arr.begin(), json_arr.end(), '0');
-            CHECK(json_arr == json({'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}));
+            CHECK(json_arr == json({ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }));
         }
     }
 
@@ -324,7 +306,7 @@ TEST_CASE("algorithms")
         SECTION("copy without if")
         {
             json dest_arr;
-            const json source_arr = {1, 2, 3, 4};
+            const json source_arr = { 1, 2, 3, 4 };
 
             std::copy(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr));
 
@@ -333,33 +315,30 @@ TEST_CASE("algorithms")
         SECTION("copy if")
         {
             json dest_arr;
-            const json source_arr = {0, 3, 6, 9, 12, 15, 20};
+            const json source_arr = { 0, 3, 6, 9, 12, 15, 20 };
 
-            std::copy_if(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr), [](const json & _value)
+            std::copy_if(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr), [](const json& _value) {
-            {
                 return _value.get<int>() % 3 == 0;
             });
-            CHECK(dest_arr == json({0, 3, 6, 9, 12, 15}));
+            CHECK(dest_arr == json({ 0, 3, 6, 9, 12, 15 }));
         }
         SECTION("copy n")
         {
-            const json source_arr = {0, 1, 2, 3, 4, 5, 6, 7};
+            const json source_arr = { 0, 1, 2, 3, 4, 5, 6, 7 };
             json dest_arr;
             const unsigned char numToCopy = 2;
 
             std::copy_n(source_arr.begin(), numToCopy, std::back_inserter(dest_arr));
-            CHECK(dest_arr == json{0, 1});
+            CHECK(dest_arr == json{ 0, 1 });
-
         }
         SECTION("copy n chars")
         {
-            const json source_arr = {'1', '2', '3', '4', '5', '6', '7'};
+            const json source_arr = { '1', '2', '3', '4', '5', '6', '7' };
             json dest_arr;
             const unsigned char numToCopy = 4;
 
             std::copy_n(source_arr.begin(), numToCopy, std::back_inserter(dest_arr));
-            CHECK(dest_arr == json{'1', '2', '3', '4'});
+            CHECK(dest_arr == json{ '1', '2', '3', '4' });
         }
     }
-
 }

tests/src/unit-allocator.cpp

@@ -21,15 +21,17 @@ struct bad_allocator : std::allocator<T>
     using std::allocator<T>::allocator;
 
     bad_allocator() = default;
-    template<class U> bad_allocator(const bad_allocator<U>& /*unused*/) { }
+    template<class U>
+    bad_allocator(const bad_allocator<U>& /*unused*/)
+    {}
 
     template<class... Args>
-    void construct(T* /*unused*/, Args&& ... /*unused*/) // NOLINT(cppcoreguidelines-missing-std-forward)
+    void construct(T* /*unused*/, Args&&... /*unused*/)  // NOLINT(cppcoreguidelines-missing-std-forward)
     {
         throw std::bad_alloc();
     }
 
-    template <class U>
+    template<class U>
     struct rebind
     {
         using other = bad_allocator<U>;
@@ -42,14 +44,7 @@ TEST_CASE("bad_alloc")
     SECTION("bad_alloc")
     {
         // create JSON type using the throwing allocator
-        using bad_json = nlohmann::basic_json<std::map,
+        using bad_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, double, bad_allocator>;
-              std::vector,
-              std::string,
-              bool,
-              std::int64_t,
-              std::uint64_t,
-              double,
-              bad_allocator>;
 
         // creating an object should throw
         CHECK_THROWS_AS(bad_json(bad_json::value_t::object), std::bad_alloc&);
@@ -68,7 +63,7 @@ struct my_allocator : std::allocator<T>
     using std::allocator<T>::allocator;
 
     template<class... Args>
-    void construct(T* p, Args&& ... args)
+    void construct(T* p, Args&&... args)
     {
         if (next_construct_fails)
         {
@@ -102,7 +97,7 @@ struct my_allocator : std::allocator<T>
         p->~T();
     }
 
-    template <class U>
+    template<class U>
     struct rebind
     {
         using other = my_allocator<U>;
@@ -123,14 +118,7 @@ void my_allocator_clean_up(T* p)
 TEST_CASE("controlled bad_alloc")
 {
     // create JSON type using the throwing allocator
-    using my_json = nlohmann::basic_json<std::map,
+    using my_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, double, my_allocator>;
-          std::vector,
-          std::string,
-          bool,
-          std::int64_t,
-          std::uint64_t,
-          double,
-          my_allocator>;
 
     SECTION("class json_value")
     {
@@ -181,7 +169,7 @@ TEST_CASE("controlled bad_alloc")
         SECTION("basic_json(const CompatibleObjectType&)")
         {
             next_construct_fails = false;
-            const std::map<std::string, std::string> v {{"foo", "bar"}};
+            const std::map<std::string, std::string> v{ { "foo", "bar" } };
             CHECK_NOTHROW(my_json(v));
             next_construct_fails = true;
             CHECK_THROWS_AS(my_json(v), std::bad_alloc&);
@@ -191,7 +179,7 @@ TEST_CASE("controlled bad_alloc")
         SECTION("basic_json(const CompatibleArrayType&)")
         {
             next_construct_fails = false;
-            const std::vector<std::string> v {"foo", "bar", "baz"};
+            const std::vector<std::string> v{ "foo", "bar", "baz" };
             CHECK_NOTHROW(my_json(v));
             next_construct_fails = true;
             CHECK_THROWS_AS(my_json(v), std::bad_alloc&);
@@ -225,17 +213,18 @@ template<class T>
 struct allocator_no_forward : std::allocator<T>
 {
     allocator_no_forward() = default;
-    template <class U>
+    template<class U>
-    allocator_no_forward(allocator_no_forward<U> /*unused*/) {}
+    allocator_no_forward(allocator_no_forward<U> /*unused*/)
+    {}
 
-    template <class U>
+    template<class U>
     struct rebind
     {
         using other = allocator_no_forward<U>;
     };
 
-    template <class... Args>
+    template<class... Args>
-    void construct(T* p, const Args& ... args) noexcept(noexcept(::new (static_cast<void*>(p)) T(args...)))
+    void construct(T* p, const Args&... args) noexcept(noexcept(::new(static_cast<void*>(p)) T(args...)))
     {
         // force copy even if move is available
         ::new (static_cast<void*>(p)) T(args...);
@@ -247,14 +236,7 @@ TEST_CASE("bad my_allocator::construct")
 {
     SECTION("my_allocator::construct doesn't forward")
     {
-        using bad_alloc_json = nlohmann::basic_json<std::map,
+        using bad_alloc_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, double, allocator_no_forward>;
-              std::vector,
-              std::string,
-              bool,
-              std::int64_t,
-              std::uint64_t,
-              double,
-              allocator_no_forward>;
 
         bad_alloc_json j;
         j["test"] = bad_alloc_json::array_t();

tests/src/unit-alt-string.cpp

@@ -30,13 +30,19 @@ class alt_string
 
     static constexpr auto npos = static_cast<std::size_t>(-1);
 
-    alt_string(const char* str): str_impl(str) {}
+    alt_string(const char* str)
-    alt_string(const char* str, std::size_t count): str_impl(str, count) {}
+      : str_impl(str)
-    alt_string(size_t count, char chr): str_impl(count, chr) {}
+    {}
+    alt_string(const char* str, std::size_t count)
+      : str_impl(str, count)
+    {}
+    alt_string(size_t count, char chr)
+      : str_impl(count, chr)
+    {}
     alt_string() = default;
 
-    template <typename...TParams>
+    template<typename... TParams>
-    alt_string& append(TParams&& ...params)
+    alt_string& append(TParams&&... params)
     {
         str_impl.append(std::forward<TParams>(params)...);
         return *this;
@@ -47,7 +53,7 @@ class alt_string
         str_impl.push_back(c);
     }
 
-    template <typename op_type>
+    template<typename op_type>
     bool operator==(const op_type& op) const
     {
         return str_impl == op;
@@ -58,7 +64,7 @@ class alt_string
         return str_impl == op.str_impl;
     }
 
-    template <typename op_type>
+    template<typename op_type>
     bool operator!=(const op_type& op) const
     {
         return str_impl != op;
@@ -74,17 +80,17 @@ class alt_string
         return str_impl.size();
     }
 
-    void resize (std::size_t n)
+    void resize(std::size_t n)
     {
         str_impl.resize(n);
     }
 
-    void resize (std::size_t n, char c)
+    void resize(std::size_t n, char c)
     {
         str_impl.resize(n, c);
     }
 
-    template <typename op_type>
+    template<typename op_type>
     bool operator<(const op_type& op) const noexcept
     {
         return str_impl < op;
@@ -148,7 +154,7 @@ class alt_string
     alt_string substr(std::size_t pos = 0, std::size_t count = npos) const
     {
         const std::string s = str_impl.substr(pos, count);
-        return {s.data(), s.size()};
+        return { s.data(), s.size() };
     }
 
     alt_string& replace(std::size_t pos, std::size_t count, const alt_string& str)
@@ -158,7 +164,7 @@ class alt_string
     }
 
   private:
-    std::string str_impl {};
+    std::string str_impl{};
 
     friend bool operator<(const char* /*op1*/, const alt_string& /*op2*/) noexcept;
 };
@@ -168,16 +174,7 @@ void int_to_string(alt_string& target, std::size_t value)
     target = std::to_string(value).c_str();
 }
 
-using alt_json = nlohmann::basic_json <
+using alt_json = nlohmann::basic_json<std::map, std::vector, alt_string, bool, std::int64_t, std::uint64_t, double, std::allocator, nlohmann::adl_serializer>;
-                 std::map,
-                 std::vector,
-                 alt_string,
-                 bool,
-                 std::int64_t,
-                 std::uint64_t,
-                 double,
-                 std::allocator,
-                 nlohmann::adl_serializer >;
 
 bool operator<(const char* op1, const alt_string& op2) noexcept
 {
@@ -232,7 +229,7 @@ TEST_CASE("alternative string type")
 
         {
             alt_json doc;
-            doc["object"] = { {"currency", "USD"}, {"value", 42.99} };
+            doc["object"] = { { "currency", "USD" }, { "value", 42.99 } };
             alt_string dump = doc.dump();
             CHECK(dump == R"({"object":{"currency":"USD","value":42.99}})");
         }
@@ -259,11 +256,11 @@ TEST_CASE("alternative string type")
 
         for (const auto& item : doc_array.items())
         {
-            if (item.key() == "0" )
+            if (item.key() == "0")
             {
-                CHECK( item.value() == "foo" );
+                CHECK(item.value() == "foo");
             }
-            else if (item.key() == "1" )
+            else if (item.key() == "1")
             {
                 CHECK(item.value() == "bar");
             }

tests/src/unit-assert_macro.cpp

@@ -18,7 +18,11 @@ DOCTEST_CLANG_SUPPRESS_WARNING("-Wstrict-overflow")
 static int assert_counter;
 
 /// set failure variable to true instead of calling assert(x)
-#define JSON_ASSERT(x) {if (!(x)) ++assert_counter; }
+#define JSON_ASSERT(x)                                                                                                                                         \
+    {                                                                                                                                                          \
+        if (!(x))                                                                                                                                              \
+            ++assert_counter;                                                                                                                                  \
+    }
 
 #include <nlohmann/json.hpp>
 using nlohmann::json;

tests/src/unit-binary_formats.cpp

@@ -11,8 +11,8 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 
-#include <fstream>
 #include "make_test_data_available.hpp"
+#include <fstream>
 
 TEST_CASE("Binary Formats" * doctest::skip())
 {
@@ -142,7 +142,7 @@ TEST_CASE("Binary Formats" * doctest::skip())
         const auto bjdata_1_size = json::to_bjdata(j).size();
         const auto bjdata_2_size = json::to_bjdata(j, true).size();
         const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
-        const auto bson_size = json::to_bson({{"", j}}).size(); // wrap array in object for BSON
+        const auto bson_size = json::to_bson({ { "", j } }).size();  // wrap array in object for BSON
         const auto cbor_size = json::to_cbor(j).size();
         const auto msgpack_size = json::to_msgpack(j).size();
         const auto ubjson_1_size = json::to_ubjson(j).size();

tests/src/unit-byte_container_with_subtype.cpp

@@ -45,7 +45,7 @@ TEST_CASE("byte_container_with_subtype")
 
     SECTION("comparisons")
     {
-        std::vector<std::uint8_t> const bytes = {{0xCA, 0xFE, 0xBA, 0xBE}};
+        std::vector<std::uint8_t> const bytes = { { 0xCA, 0xFE, 0xBA, 0xBE } };
         nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container1;
         nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container2({}, 42);
         nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container3(bytes);

tests/src/unit-capacity.cpp

@@ -74,8 +74,8 @@ TEST_CASE("capacity")
 
             SECTION("filled array")
             {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = { 1, 2, 3 };  // NOLINT(misc-const-correctness)
-                const json j_const = {1, 2, 3};
+                const json j_const = { 1, 2, 3 };
 
                 SECTION("result of empty")
                 {
@@ -113,8 +113,8 @@ TEST_CASE("capacity")
 
             SECTION("filled object")
             {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = { { "one", 1 }, { "two", 2 }, { "three", 3 } };  // NOLINT(misc-const-correctness)
-                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+                const json j_const = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
 
                 SECTION("result of empty")
                 {
@@ -269,8 +269,8 @@ TEST_CASE("capacity")
 
             SECTION("filled array")
             {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = { 1, 2, 3 };  // NOLINT(misc-const-correctness)
-                const json j_const = {1, 2, 3};
+                const json j_const = { 1, 2, 3 };
 
                 SECTION("result of size")
                 {
@@ -312,8 +312,8 @@ TEST_CASE("capacity")
 
             SECTION("filled object")
             {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = { { "one", 1 }, { "two", 2 }, { "three", 3 } };  // NOLINT(misc-const-correctness)
-                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+                const json j_const = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
 
                 SECTION("result of size")
                 {
@@ -454,8 +454,8 @@ TEST_CASE("capacity")
 
             SECTION("filled array")
             {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = { 1, 2, 3 };  // NOLINT(misc-const-correctness)
-                const json j_const = {1, 2, 3};
+                const json j_const = { 1, 2, 3 };
 
                 SECTION("result of max_size")
                 {
@@ -481,8 +481,8 @@ TEST_CASE("capacity")
 
             SECTION("filled object")
             {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = { { "one", 1 }, { "two", 2 }, { "three", 3 } };  // NOLINT(misc-const-correctness)
-                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+                const json j_const = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
 
                 SECTION("result of max_size")
                 {

tests/src/unit-class_const_iterator.cpp

@@ -49,7 +49,7 @@ TEST_CASE("const_iterator class")
         {
             SECTION("create from uninitialized iterator")
             {
-                const json::iterator it {};
+                const json::iterator it{};
                 json::const_iterator const cit(it);
             }
 
@@ -141,14 +141,14 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator const it = j.cbegin();
                 CHECK(*it == json("bar"));
             }
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator const it = j.cbegin();
                 CHECK(*it == json(1));
             }
@@ -174,14 +174,14 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator const it = j.cbegin();
                 CHECK(std::string(it->type_name()) == "string");
             }
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator const it = j.cbegin();
                 CHECK(std::string(it->type_name()) == "number");
             }
@@ -214,7 +214,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator it = j.cbegin();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
                 it++;
@@ -223,7 +223,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator it = j.cbegin();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
                 it++;
@@ -265,7 +265,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator it = j.cbegin();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
                 ++it;
@@ -274,7 +274,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator it = j.cbegin();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
                 ++it;
@@ -314,7 +314,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator it = j.cend();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
                 it--;
@@ -323,7 +323,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator it = j.cend();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
                 it--;
@@ -363,7 +363,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("object")
             {
-                json const j({{"foo", "bar"}});
+                json const j({ { "foo", "bar" } });
                 json::const_iterator it = j.cend();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
                 --it;
@@ -372,7 +372,7 @@ TEST_CASE("const_iterator class")
 
             SECTION("array")
             {
-                json const j({1, 2, 3, 4});
+                json const j({ 1, 2, 3, 4 });
                 json::const_iterator it = j.cend();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
                 --it;

tests/src/unit-class_iterator.cpp

@@ -131,14 +131,14 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator const it = j.begin();
                 CHECK(*it == json("bar"));
             }
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator const it = j.begin();
                 CHECK(*it == json(1));
             }
@@ -164,14 +164,14 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator const it = j.begin();
                 CHECK(std::string(it->type_name()) == "string");
             }
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator const it = j.begin();
                 CHECK(std::string(it->type_name()) == "number");
             }
@@ -204,7 +204,7 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator it = j.begin();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
                 it++;
@@ -213,7 +213,7 @@ TEST_CASE("iterator class")
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator it = j.begin();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
                 it++;
@@ -255,7 +255,7 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator it = j.begin();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
                 ++it;
@@ -264,7 +264,7 @@ TEST_CASE("iterator class")
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator it = j.begin();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
                 ++it;
@@ -304,7 +304,7 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator it = j.end();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
                 it--;
@@ -313,7 +313,7 @@ TEST_CASE("iterator class")
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator it = j.end();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
                 it--;
@@ -353,7 +353,7 @@ TEST_CASE("iterator class")
 
             SECTION("object")
             {
-                json j({{"foo", "bar"}});
+                json j({ { "foo", "bar" } });
                 json::iterator it = j.end();
                 CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
                 --it;
@@ -362,7 +362,7 @@ TEST_CASE("iterator class")
 
             SECTION("array")
             {
-                json j({1, 2, 3, 4});
+                json j({ 1, 2, 3, 4 });
                 json::iterator it = j.end();
                 CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
                 --it;
@@ -387,18 +387,18 @@ TEST_CASE("iterator class")
             SECTION("primitive_iterator_t")
             {
                 using Iter = nlohmann::detail::primitive_iterator_t;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+                CHECK(std::is_same<decltype(std::declval<Iter&>()++), Iter>::value);
             }
             SECTION("iter_impl")
             {
                 using Iter = nlohmann::detail::iter_impl<json>;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+                CHECK(std::is_same<decltype(std::declval<Iter&>()++), Iter>::value);
             }
             SECTION("json_reverse_iterator")
             {
                 using Base = nlohmann::detail::iter_impl<json>;
                 using Iter = nlohmann::detail::json_reverse_iterator<Base>;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+                CHECK(std::is_same<decltype(std::declval<Iter&>()++), Iter>::value);
             }
         }
         SECTION("post-decrement")
@@ -406,18 +406,18 @@ TEST_CASE("iterator class")
             SECTION("primitive_iterator_t")
             {
                 using Iter = nlohmann::detail::primitive_iterator_t;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value);
+                CHECK(std::is_same<decltype(std::declval<Iter&>()--), Iter>::value);
             }
             SECTION("iter_impl")
             {
                 using Iter = nlohmann::detail::iter_impl<json>;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value );
+                CHECK(std::is_same<decltype(std::declval<Iter&>()--), Iter>::value);
             }
             SECTION("json_reverse_iterator")
             {
                 using Base = nlohmann::detail::iter_impl<json>;
                 using Iter = nlohmann::detail::json_reverse_iterator<Base>;
-                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value );
+                CHECK(std::is_same<decltype(std::declval<Iter&>()--), Iter>::value);
             }
         }
     }
@@ -462,7 +462,6 @@ TEST_CASE("iterator class")
                 using Iter = nlohmann::detail::json_reverse_iterator<Base>;
                 CHECK_FALSE(is_detected<can_post_decrement_temporary, Iter&>::value);
             }
-
         }
     }
 }

tests/src/unit-comparison.cpp

@@ -23,7 +23,8 @@ using nlohmann::json;
 // this can be replaced with the doctest stl extension header in version 2.5
 namespace doctest
 {
-template<> struct StringMaker<std::partial_ordering>
+template<>
+struct StringMaker<std::partial_ordering>
 {
     static String convert(const std::partial_ordering& order)
     {
@@ -54,7 +55,7 @@ namespace
 {
 // helper function to check std::less<json::value_t>
 // see https://en.cppreference.com/w/cpp/utility/functional/less
-template <typename A, typename B, typename U = std::less<json::value_t>>
+template<typename A, typename B, typename U = std::less<json::value_t>>
 bool f(A a, B b, U u = U())
 {
     return u(a, b);
@@ -86,33 +87,23 @@ TEST_CASE("lexicographical comparison operators")
 
     SECTION("types")
     {
-        std::vector<json::value_t> j_types =
+        std::vector<json::value_t> j_types = {
-        {
+            json::value_t::null,   json::value_t::boolean, json::value_t::number_integer, json::value_t::number_unsigned, json::value_t::number_float,
-            json::value_t::null,
+            json::value_t::object, json::value_t::array,   json::value_t::string,         json::value_t::binary,          json::value_t::discarded
-            json::value_t::boolean,
-            json::value_t::number_integer,
-            json::value_t::number_unsigned,
-            json::value_t::number_float,
-            json::value_t::object,
-            json::value_t::array,
-            json::value_t::string,
-            json::value_t::binary,
-            json::value_t::discarded
         };
 
-        std::vector<std::vector<bool>> expected_lt =
+        std::vector<std::vector<bool>> expected_lt = {
-        {
             //0   1   2   3   4   5   6   7   8   9
-            {f_, _t, _t, _t, _t, _t, _t, _t, _t, f_}, //  0
+            { f_, _t, _t, _t, _t, _t, _t, _t, _t, f_ },  //  0
-            {f_, f_, _t, _t, _t, _t, _t, _t, _t, f_}, //  1
+            { f_, f_, _t, _t, _t, _t, _t, _t, _t, f_ },  //  1
-            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  2
+            { f_, f_, f_, f_, f_, _t, _t, _t, _t, f_ },  //  2
-            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  3
+            { f_, f_, f_, f_, f_, _t, _t, _t, _t, f_ },  //  3
-            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  4
+            { f_, f_, f_, f_, f_, _t, _t, _t, _t, f_ },  //  4
-            {f_, f_, f_, f_, f_, f_, _t, _t, _t, f_}, //  5
+            { f_, f_, f_, f_, f_, f_, _t, _t, _t, f_ },  //  5
-            {f_, f_, f_, f_, f_, f_, f_, _t, _t, f_}, //  6
+            { f_, f_, f_, f_, f_, f_, f_, _t, _t, f_ },  //  6
-            {f_, f_, f_, f_, f_, f_, f_, f_, _t, f_}, //  7
+            { f_, f_, f_, f_, f_, f_, f_, f_, _t, f_ },  //  7
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  8
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  9
         };
 
         SECTION("comparison: less")
@@ -140,19 +131,18 @@ TEST_CASE("lexicographical comparison operators")
         // JSON_HAS_CPP_20 (do not remove; see note at top of file)
         SECTION("comparison: 3-way")
         {
-            std::vector<std::vector<std::partial_ordering>> expected =
+            std::vector<std::vector<std::partial_ordering>> expected = {
-            {
                 //0   1   2   3   4   5   6   7   8   9
-                {eq, lt, lt, lt, lt, lt, lt, lt, lt, un}, //  0
+                { eq, lt, lt, lt, lt, lt, lt, lt, lt, un },  //  0
-                {gt, eq, lt, lt, lt, lt, lt, lt, lt, un}, //  1
+                { gt, eq, lt, lt, lt, lt, lt, lt, lt, un },  //  1
-                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  2
+                { gt, gt, eq, eq, eq, lt, lt, lt, lt, un },  //  2
-                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  3
+                { gt, gt, eq, eq, eq, lt, lt, lt, lt, un },  //  3
-                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  4
+                { gt, gt, eq, eq, eq, lt, lt, lt, lt, un },  //  4
-                {gt, gt, gt, gt, gt, eq, lt, lt, lt, un}, //  5
+                { gt, gt, gt, gt, gt, eq, lt, lt, lt, un },  //  5
-                {gt, gt, gt, gt, gt, gt, eq, lt, lt, un}, //  6
+                { gt, gt, gt, gt, gt, gt, eq, lt, lt, un },  //  6
-                {gt, gt, gt, gt, gt, gt, gt, eq, lt, un}, //  7
+                { gt, gt, gt, gt, gt, gt, gt, eq, lt, un },  //  7
-                {gt, gt, gt, gt, gt, gt, gt, gt, eq, un}, //  8
+                { gt, gt, gt, gt, gt, gt, gt, gt, eq, un },  //  8
-                {un, un, un, un, un, un, un, un, un, un}, //  9
+                { un, un, un, un, un, un, un, un, un, un },  //  9
             };
 
             // check expected partial_ordering against expected boolean
@@ -186,102 +176,109 @@ TEST_CASE("lexicographical comparison operators")
 
     SECTION("values")
     {
-        json j_values =
+        json j_values = {
-        {
+            nullptr,
-            nullptr, nullptr,                                              // 0 1
+            nullptr,  // 0 1
-            -17, 42,                                                       // 2 3
+            -17,
-            8u, 13u,                                                       // 4 5
+            42,  // 2 3
-            3.14159, 23.42,                                                // 6 7
+            8u,
-            nan, nan,                                                      // 8 9
+            13u,  // 4 5
-            "foo", "bar",                                                  // 10 11
+            3.14159,
-            true, false,                                                   // 12 13
+            23.42,  // 6 7
-            {1, 2, 3}, {"one", "two", "three"},                            // 14 15
+            nan,
-            {{"first", 1}, {"second", 2}}, {{"a", "A"}, {"b", {"B"}}},     // 16 17
+            nan,  // 8 9
-            json::binary({1, 2, 3}), json::binary({1, 2, 4}),              // 18 19
+            "foo",
-            json(json::value_t::discarded), json(json::value_t::discarded) // 20 21
+            "bar",  // 10 11
+            true,
+            false,  // 12 13
+            { 1, 2, 3 },
+            { "one", "two", "three" },  // 14 15
+            { { "first", 1 }, { "second", 2 } },
+            { { "a", "A" }, { "b", { "B" } } },  // 16 17
+            json::binary({ 1, 2, 3 }),
+            json::binary({ 1, 2, 4 }),  // 18 19
+            json(json::value_t::discarded),
+            json(json::value_t::discarded)  // 20 21
         };
 
-        std::vector<std::vector<bool>> expected_eq =
+        std::vector<std::vector<bool>> expected_eq = {
-        {
             //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
-            {_t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  0
+            { _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  0
-            {_t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  1
+            { _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  1
-            {f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  2
+            { f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  2
-            {f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  3
+            { f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  3
-            {f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  4
+            { f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  4
-            {f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  5
+            { f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  5
-            {f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  6
+            { f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  6
-            {f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  7
+            { f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  7
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  8
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  9
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 10
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 10
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 11
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 11
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 12
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 12
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_}, // 13
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_ },  // 13
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_}, // 14
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_ },  // 14
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_}, // 15
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_ },  // 15
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_}, // 16
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_ },  // 16
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_}, // 17
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_ },  // 17
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_}, // 18
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_ },  // 18
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_}, // 19
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_ },  // 19
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 20
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 21
         };
 
-        std::vector<std::vector<bool>> expected_lt =
+        std::vector<std::vector<bool>> expected_lt = {
-        {
             //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
-            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_}, //  0
+            { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_ },  //  0
-            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_}, //  1
+            { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_ },  //  1
-            {f_, f_, f_, _t, _t, _t, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  2
+            { f_, f_, f_, _t, _t, _t, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  2
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  3
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  3
-            {f_, f_, f_, _t, f_, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  4
+            { f_, f_, f_, _t, f_, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  4
-            {f_, f_, f_, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  5
+            { f_, f_, f_, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  5
-            {f_, f_, f_, _t, _t, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  6
+            { f_, f_, f_, _t, _t, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  6
-            {f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  7
+            { f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  7
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  8
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  8
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  9
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  //  9
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 10
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_ },  // 10
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 11
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_ },  // 11
-            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, // 12
+            { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  // 12
-            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, _t, _t, _t, _t, _t, _t, f_, f_}, // 13
+            { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, _t, _t, _t, _t, _t, _t, f_, f_ },  // 13
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_}, // 14
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_ },  // 14
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 15
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_ },  // 15
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_}, // 16
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_ },  // 16
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, f_, _t, _t, f_, f_}, // 17
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, f_, _t, _t, f_, f_ },  // 17
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_}, // 18
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_ },  // 18
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 19
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 19
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 20
-            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+            { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 21
         };
 
         SECTION("compares unordered")
         {
-            std::vector<std::vector<bool>> expected =
+            std::vector<std::vector<bool>> expected = {
-            {
                 //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  0
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  0
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  1
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  1
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  2
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  2
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  3
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  3
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  4
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  4
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  5
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  5
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  6
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  6
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  7
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  7
-                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  8
+                { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  8
-                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  9
+                { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  //  9
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 10
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 10
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 11
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 11
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 12
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 12
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 13
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 13
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 14
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 14
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 15
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 15
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 16
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 16
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 17
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 17
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 18
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 18
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 19
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t },  // 19
-                {_t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t}, // 20
+                { _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t },  // 20
-                {_t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t}, // 21
+                { _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t },  // 21
             };
 
             // check if two values compare unordered as expected
@@ -301,31 +298,30 @@ TEST_CASE("lexicographical comparison operators")
 #if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
         SECTION("compares unordered (inverse)")
         {
-            std::vector<std::vector<bool>> expected =
+            std::vector<std::vector<bool>> expected = {
-            {
                 //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  0
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  0
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  1
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  1
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  2
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  2
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  3
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  3
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  4
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  4
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  5
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  5
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  6
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  6
-                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  7
+                { f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  7
-                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+                { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  8
-                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+                { f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  //  9
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 10
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 10
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 11
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 11
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 12
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 12
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 13
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 13
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 14
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 14
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 15
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 15
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 16
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 16
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 17
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 17
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 18
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 18
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 19
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 19
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 20
-                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+                { f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_ },  // 21
             };
 
             // check that two values compare unordered as expected (with legacy-mode enabled)
@@ -496,31 +492,30 @@ TEST_CASE("lexicographical comparison operators")
         // JSON_HAS_CPP_20 (do not remove; see note at top of file)
         SECTION("comparison: 3-way")
         {
-            std::vector<std::vector<std::partial_ordering>> expected =
+            std::vector<std::vector<std::partial_ordering>> expected = {
-            {
                 //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
-                {eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un}, //  0
+                { eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un },  //  0
-                {eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un}, //  1
+                { eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un },  //  1
-                {gt, gt, eq, lt, lt, lt, lt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  2
+                { gt, gt, eq, lt, lt, lt, lt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  2
-                {gt, gt, gt, eq, gt, gt, gt, gt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  3
+                { gt, gt, gt, eq, gt, gt, gt, gt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  3
-                {gt, gt, gt, lt, eq, lt, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  4
+                { gt, gt, gt, lt, eq, lt, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  4
-                {gt, gt, gt, lt, gt, eq, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  5
+                { gt, gt, gt, lt, gt, eq, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  5
-                {gt, gt, gt, lt, lt, lt, eq, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  6
+                { gt, gt, gt, lt, lt, lt, eq, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  6
-                {gt, gt, gt, lt, gt, gt, gt, eq, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  7
+                { gt, gt, gt, lt, gt, gt, gt, eq, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  7
-                {gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  8
+                { gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  8
-                {gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  9
+                { gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un },  //  9
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, gt, gt, gt, gt, gt, gt, gt, lt, lt, un, un}, // 10
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, gt, gt, gt, gt, gt, gt, gt, lt, lt, un, un },  // 10
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, eq, gt, gt, gt, gt, gt, gt, lt, lt, un, un}, // 11
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, eq, gt, gt, gt, gt, gt, gt, lt, lt, un, un },  // 11
-                {gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, gt, lt, lt, lt, lt, lt, lt, un, un}, // 12
+                { gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, gt, lt, lt, lt, lt, lt, lt, un, un },  // 12
-                {gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, lt, lt, lt, lt, lt, lt, un, un}, // 13
+                { gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, lt, lt, lt, lt, lt, lt, un, un },  // 13
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, eq, lt, gt, gt, lt, lt, un, un}, // 14
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, eq, lt, gt, gt, lt, lt, un, un },  // 14
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, gt, eq, gt, gt, lt, lt, un, un}, // 15
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, gt, eq, gt, gt, lt, lt, un, un },  // 15
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, eq, gt, lt, lt, un, un}, // 16
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, eq, gt, lt, lt, un, un },  // 16
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, lt, eq, lt, lt, un, un}, // 17
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, lt, eq, lt, lt, un, un },  // 17
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, lt, un, un}, // 18
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, lt, un, un },  // 18
-                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, un, un}, // 19
+                { gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, un, un },  // 19
-                {un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un}, // 20
+                { un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un },  // 20
-                {un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un}, // 21
+                { un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un },  // 21
             };
 
             // check expected partial_ordering against expected booleans
@@ -576,20 +571,18 @@ TEST_CASE("lexicographical comparison operators")
                 [1,2,[3,4,5],4,5]
             )";
 
-            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json & j) noexcept
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& j) noexcept {
-            {
                 // filter all number(2) elements
                 return j != json(2);
             });
 
-            CHECK (j_object == json({{"bar", {{"baz", 1}}}}));
+            CHECK(j_object == json({ { "bar", { { "baz", 1 } } } }));
 
-            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json & j) noexcept
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& j) noexcept {
-            {
                 return j != json(2);
             });
 
-            CHECK (j_array == json({1, {3, 4, 5}, 4, 5}));
+            CHECK(j_array == json({ 1, { 3, 4, 5 }, 4, 5 }));
         }
     }
 #endif

tests/src/unit-concepts.cpp

@@ -52,8 +52,7 @@ TEST_CASE("concepts")
         // X::size_type must return an unsigned integer
         CHECK((std::is_unsigned<json::size_type>::value));
         // X::size_type can represent any non-negative value of X::difference_type
-        CHECK(static_cast<json::size_type>((std::numeric_limits<json::difference_type>::max)()) <=
+        CHECK(static_cast<json::size_type>((std::numeric_limits<json::difference_type>::max)()) <= (std::numeric_limits<json::size_type>::max)());
-              (std::numeric_limits<json::size_type>::max)());
 
         // the expression "X u" has the post-condition "u.empty()"
         {
@@ -130,7 +129,7 @@ TEST_CASE("concepts")
         SECTION("Swappable")
         {
             {
-                json j {1, 2, 3};
+                json j{ 1, 2, 3 };
                 json::iterator it1 = j.begin();
                 json::iterator it2 = j.end();
                 swap(it1, it2);
@@ -138,7 +137,7 @@ TEST_CASE("concepts")
                 CHECK(it2 == j.begin());
             }
             {
-                json j {1, 2, 3};
+                json j{ 1, 2, 3 };
                 json::const_iterator it1 = j.cbegin();
                 json::const_iterator it2 = j.cend();
                 swap(it1, it2);

tests/src/unit-constructor1.cpp

@@ -131,7 +131,7 @@ TEST_CASE("constructors")
 
         SECTION("filled object")
         {
-            json::object_t const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json::object_t const o{ { "a", json(1) }, { "b", json(1u) }, { "c", json(2.2) }, { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
         }
@@ -140,12 +140,14 @@ TEST_CASE("constructors")
     SECTION("create an object (implicit)")
     {
         // reference object
-        json::object_t const o_reference {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+        json::object_t const o_reference{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                          { "d", json(false) }, { "e", json("string") }, { "f", json() } };
         json const j_reference(o_reference);
 
         SECTION("std::map<json::string_t, json>")
         {
-            std::map<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            std::map<json::string_t, json> const o{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                                    { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
@@ -153,11 +155,10 @@ TEST_CASE("constructors")
 
         SECTION("std::map<std::string, std::string> #600")
         {
-            const std::map<std::string, std::string> m
+            const std::map<std::string, std::string> m{
-            {
+                { "a", "b" },
-                {"a", "b"},
+                { "c", "d" },
-                {"c", "d"},
+                { "e", "f" },
-                {"e", "f"},
             };
 
             json const j(m);
@@ -166,7 +167,8 @@ TEST_CASE("constructors")
 
         SECTION("std::map<const char*, json>")
         {
-            std::map<const char*, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            std::map<const char*, json> const o{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                                 { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
@@ -174,7 +176,8 @@ TEST_CASE("constructors")
 
         SECTION("std::multimap<json::string_t, json>")
         {
-            std::multimap<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            std::multimap<json::string_t, json> const o{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                                         { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
@@ -182,7 +185,8 @@ TEST_CASE("constructors")
 
         SECTION("std::unordered_map<json::string_t, json>")
         {
-            std::unordered_map<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            std::unordered_map<json::string_t, json> const o{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                                              { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
@@ -190,7 +194,8 @@ TEST_CASE("constructors")
 
         SECTION("std::unordered_multimap<json::string_t, json>")
         {
-            std::unordered_multimap<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            std::unordered_multimap<json::string_t, json> const o{ { "a", json(1) },     { "b", json(1u) },       { "c", json(2.2) },
+                                                                   { "d", json(false) }, { "e", json("string") }, { "f", json() } };
             json const j(o);
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
@@ -198,7 +203,7 @@ TEST_CASE("constructors")
 
         SECTION("associative container literal")
         {
-            json const j({{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}});
+            json const j({ { "a", json(1) }, { "b", json(1u) }, { "c", json(2.2) }, { "d", json(false) }, { "e", json("string") }, { "f", json() } });
             CHECK(j.type() == json::value_t::object);
             CHECK(j == j_reference);
         }
@@ -215,7 +220,7 @@ TEST_CASE("constructors")
 
         SECTION("filled array")
         {
-            json::array_t const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json::array_t const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
         }
@@ -224,12 +229,12 @@ TEST_CASE("constructors")
     SECTION("create an array (implicit)")
     {
         // reference array
-        json::array_t const a_reference {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+        json::array_t const a_reference{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
         json const j_reference(a_reference);
 
         SECTION("std::list<json>")
         {
-            std::list<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::list<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
@@ -237,7 +242,7 @@ TEST_CASE("constructors")
 
         SECTION("std::pair")
         {
-            std::pair<float, std::string> const p{1.0f, "string"};
+            std::pair<float, std::string> const p{ 1.0f, "string" };
             json const j(p);
 
             CHECK(j.type() == json::value_t::array);
@@ -249,7 +254,7 @@ TEST_CASE("constructors")
 
         SECTION("std::pair with discarded values")
         {
-            json const j{1, 2.0, "string"};
+            json const j{ 1, 2.0, "string" };
 
             const auto p = j.get<std::pair<int, float>>();
             CHECK(p.first == j[0]);
@@ -258,7 +263,7 @@ TEST_CASE("constructors")
 
         SECTION("std::tuple")
         {
-            const auto t = std::make_tuple(1.0, std::string{"string"}, 42, std::vector<int> {0, 1});
+            const auto t = std::make_tuple(1.0, std::string{ "string" }, 42, std::vector<int>{ 0, 1 });
             json const j(t);
 
             CHECK(j.type() == json::value_t::array);
@@ -273,7 +278,7 @@ TEST_CASE("constructors")
 
         SECTION("std::tuple with discarded values")
         {
-            json const j{1, 2.0, "string", 42};
+            json const j{ 1, 2.0, "string", 42 };
 
             const auto t = j.get<std::tuple<int, float, std::string>>();
             CHECK(std::get<0>(t) == j[0]);
@@ -283,7 +288,7 @@ TEST_CASE("constructors")
 
         SECTION("std::pair/tuple/array failures")
         {
-            json const j{1};
+            json const j{ 1 };
 
             CHECK_THROWS_WITH_AS((j.get<std::pair<int, int>>()), "[json.exception.out_of_range.401] array index 1 is out of range", json::out_of_range&);
             CHECK_THROWS_WITH_AS((j.get<std::tuple<int, int>>()), "[json.exception.out_of_range.401] array index 1 is out of range", json::out_of_range&);
@@ -292,7 +297,7 @@ TEST_CASE("constructors")
 
         SECTION("std::forward_list<json>")
         {
-            std::forward_list<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::forward_list<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
@@ -300,7 +305,7 @@ TEST_CASE("constructors")
 
         SECTION("std::array<json, 6>")
         {
-            std::array<json, 6> const a {{json(1), json(1u), json(2.2), json(false), json("string"), json()}};
+            std::array<json, 6> const a{ { json(1), json(1u), json(2.2), json(false), json("string"), json() } };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
@@ -311,10 +316,10 @@ TEST_CASE("constructors")
 
         SECTION("std::valarray<int>")
         {
-            std::valarray<int> const va = {1, 2, 3, 4, 5};
+            std::valarray<int> const va = { 1, 2, 3, 4, 5 };
             json const j(va);
             CHECK(j.type() == json::value_t::array);
-            CHECK(j == json({1, 2, 3, 4, 5}));
+            CHECK(j == json({ 1, 2, 3, 4, 5 }));
 
             auto jva = j.get<std::valarray<int>>();
             CHECK(jva.size() == va.size());
@@ -326,10 +331,10 @@ TEST_CASE("constructors")
 
         SECTION("std::valarray<double>")
         {
-            std::valarray<double> const va = {1.2, 2.3, 3.4, 4.5, 5.6};
+            std::valarray<double> const va = { 1.2, 2.3, 3.4, 4.5, 5.6 };
             json const j(va);
             CHECK(j.type() == json::value_t::array);
-            CHECK(j == json({1.2, 2.3, 3.4, 4.5, 5.6}));
+            CHECK(j == json({ 1.2, 2.3, 3.4, 4.5, 5.6 }));
 
             auto jva = j.get<std::valarray<double>>();
             CHECK(jva.size() == va.size());
@@ -341,7 +346,7 @@ TEST_CASE("constructors")
 
         SECTION("std::vector<json>")
         {
-            std::vector<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::vector<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
@@ -349,7 +354,7 @@ TEST_CASE("constructors")
 
         SECTION("std::deque<json>")
         {
-            std::deque<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::deque<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
@@ -357,7 +362,7 @@ TEST_CASE("constructors")
 
         SECTION("std::set<json>")
         {
-            std::set<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::set<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             // we cannot really check for equality here
@@ -365,7 +370,7 @@ TEST_CASE("constructors")
 
         SECTION("std::unordered_set<json>")
         {
-            std::unordered_set<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            std::unordered_set<json> const a{ json(1), json(1u), json(2.2), json(false), json("string"), json() };
             json const j(a);
             CHECK(j.type() == json::value_t::array);
             // we cannot really check for equality here
@@ -373,7 +378,7 @@ TEST_CASE("constructors")
 
         SECTION("sequence container literal")
         {
-            json const j({json(1), json(1u), json(2.2), json(false), json("string"), json()});
+            json const j({ json(1), json(1u), json(2.2), json(false), json("string"), json() });
             CHECK(j.type() == json::value_t::array);
             CHECK(j == j_reference);
         }
@@ -390,7 +395,7 @@ TEST_CASE("constructors")
 
         SECTION("filled string")
         {
-            json::string_t const s {"Hello world"};
+            json::string_t const s{ "Hello world" };
             json const j(s);
             CHECK(j.type() == json::value_t::string);
         }
@@ -399,12 +404,12 @@ TEST_CASE("constructors")
     SECTION("create a string (implicit)")
     {
         // reference string
-        json::string_t const s_reference {"Hello world"};
+        json::string_t const s_reference{ "Hello world" };
         json const j_reference(s_reference);
 
         SECTION("std::string")
         {
-            std::string const s {"Hello world"};
+            std::string const s{ "Hello world" };
             json const j(s);
             CHECK(j.type() == json::value_t::string);
             CHECK(j == j_reference);
@@ -412,7 +417,7 @@ TEST_CASE("constructors")
 
         SECTION("char[]")
         {
-            char const s[] {"Hello world"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            char const s[]{ "Hello world" };  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
             json const j(s);
             CHECK(j.type() == json::value_t::string);
             CHECK(j == j_reference);
@@ -420,7 +425,7 @@ TEST_CASE("constructors")
 
         SECTION("const char*")
         {
-            const char* s {"Hello world"};
+            const char* s{ "Hello world" };
             json const j(s);
             CHECK(j.type() == json::value_t::string);
             CHECK(j == j_reference);
@@ -457,7 +462,7 @@ TEST_CASE("constructors")
 
         SECTION("from std::vector<bool>::reference")
         {
-            std::vector<bool> v{true};
+            std::vector<bool> v{ true };
             json const j(v[0]);
             CHECK(std::is_same<decltype(v[0]), std::vector<bool>::reference>::value);
             CHECK(j.type() == json::value_t::boolean);
@@ -465,7 +470,7 @@ TEST_CASE("constructors")
 
         SECTION("from std::vector<bool>::const_reference")
         {
-            const std::vector<bool> v{true};
+            const std::vector<bool> v{ true };
             json const j(v[0]);
             CHECK(std::is_same<decltype(v[0]), std::vector<bool>::const_reference>::value);
             CHECK(j.type() == json::value_t::boolean);
@@ -483,7 +488,7 @@ TEST_CASE("constructors")
 
         SECTION("filled binary")
         {
-            json::binary_t const b({1, 2, 3});
+            json::binary_t const b({ 1, 2, 3 });
             json const j(b);
             CHECK(j.type() == json::value_t::binary);
         }
@@ -837,7 +842,7 @@ TEST_CASE("constructors")
             CHECK(j.type() == json::value_t::number_float);
 
             // check round trip of NaN
-            json::number_float_t const d{j};
+            json::number_float_t const d{ j };
             CHECK((std::isnan(d) && std::isnan(n)) == true);
 
             // check that NaN is serialized to null
@@ -852,7 +857,7 @@ TEST_CASE("constructors")
             CHECK(j.type() == json::value_t::number_float);
 
             // check round trip of infinity
-            json::number_float_t const d{j};
+            json::number_float_t const d{ j };
             CHECK(d == n);
 
             // check that inf is serialized to null
@@ -918,13 +923,13 @@ TEST_CASE("constructors")
         {
             SECTION("explicit")
             {
-                json const j(json::initializer_list_t {});
+                json const j(json::initializer_list_t{});
                 CHECK(j.type() == json::value_t::object);
             }
 
             SECTION("implicit")
             {
-                json const j {};
+                json const j{};
                 CHECK(j.type() == json::value_t::null);
             }
         }
@@ -935,13 +940,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(json::array_t())});
+                    json const j(json::initializer_list_t{ json(json::array_t()) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {json::array_t()};
+                    json const j{ json::array_t() };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -950,13 +955,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(json::object_t())});
+                    json const j(json::initializer_list_t{ json(json::object_t()) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {json::object_t()};
+                    json const j{ json::object_t() };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -965,13 +970,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json("Hello world")});
+                    json const j(json::initializer_list_t{ json("Hello world") });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {"Hello world"};
+                    json const j{ "Hello world" };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -980,13 +985,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(true)});
+                    json const j(json::initializer_list_t{ json(true) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {true};
+                    json const j{ true };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -995,13 +1000,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(1)});
+                    json const j(json::initializer_list_t{ json(1) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {1};
+                    json const j{ 1 };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -1010,13 +1015,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(1u)});
+                    json const j(json::initializer_list_t{ json(1u) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {1u};
+                    json const j{ 1u };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -1025,13 +1030,13 @@ TEST_CASE("constructors")
             {
                 SECTION("explicit")
                 {
-                    json const j(json::initializer_list_t {json(42.23)});
+                    json const j(json::initializer_list_t{ json(42.23) });
                     CHECK(j.type() == json::value_t::array);
                 }
 
                 SECTION("implicit")
                 {
-                    json const j {42.23};
+                    json const j{ 42.23 };
                     CHECK(j.type() == json::value_t::array);
                 }
             }
@@ -1041,13 +1046,13 @@ TEST_CASE("constructors")
         {
             SECTION("explicit")
             {
-                json const j(json::initializer_list_t {1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t()});
+                json const j(json::initializer_list_t{ 1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t() });
                 CHECK(j.type() == json::value_t::array);
             }
 
             SECTION("implicit")
             {
-                json const j {1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t()};
+                json const j{ 1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t() };
                 CHECK(j.type() == json::value_t::array);
             }
         }
@@ -1056,13 +1061,13 @@ TEST_CASE("constructors")
         {
             SECTION("object")
             {
-                json const j { {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} };
+                json const j{ { "one", 1 }, { "two", 1u }, { "three", 2.2 }, { "four", false } };
                 CHECK(j.type() == json::value_t::object);
             }
 
             SECTION("array")
             {
-                json const j { {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false}, 13 };
+                json const j{ { "one", 1 }, { "two", 1u }, { "three", 2.2 }, { "four", false }, 13 };
                 CHECK(j.type() == json::value_t::array);
             }
         }
@@ -1077,14 +1082,16 @@ TEST_CASE("constructors")
 
             SECTION("object")
             {
-                json const j = json::object({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} });
+                json const j = json::object({ { "one", 1 }, { "two", 1u }, { "three", 2.2 }, { "four", false } });
                 CHECK(j.type() == json::value_t::object);
             }
 
             SECTION("object with error")
             {
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::object({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false}, 13 }), "[json.exception.type_error.301] cannot create object from initializer list", json::type_error&);
+                CHECK_THROWS_WITH_AS(_ = json::object({ { "one", 1 }, { "two", 1u }, { "three", 2.2 }, { "four", false }, 13 }),
+                                     "[json.exception.type_error.301] cannot create object from initializer list",
+                                     json::type_error&);
             }
 
             SECTION("empty array")
@@ -1095,7 +1102,7 @@ TEST_CASE("constructors")
 
             SECTION("array")
             {
-                json const j = json::array({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} });
+                json const j = json::array({ { "one", 1 }, { "two", 1u }, { "three", 2.2 }, { "four", false } });
                 CHECK(j.type() == json::value_t::array);
             }
         }
@@ -1109,7 +1116,7 @@ TEST_CASE("constructors")
                     // This should break through any short string optimization in std::string
                     std::string source(1024, '!');
                     const auto* source_addr = source.data();
-                    json j = {std::move(source)};
+                    json j = { std::move(source) };
                     const auto* target_addr = j[0].get_ref<std::string const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1120,7 +1127,7 @@ TEST_CASE("constructors")
                     // This should break through any short string optimization in std::string
                     std::string source(1024, '!');
                     const auto* source_addr = source.data();
-                    json j = {{"key", std::move(source)}};
+                    json j = { { "key", std::move(source) } };
                     const auto* target_addr = j["key"].get_ref<std::string const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1131,7 +1138,7 @@ TEST_CASE("constructors")
                     // This should break through any short string optimization in std::string
                     std::string source(1024, '!');
                     const auto* source_addr = source.data();
-                    json j = {{std::move(source), 42}};
+                    json j = { { std::move(source), 42 } };
                     const auto* target_addr = j.get_ref<json::object_t&>().begin()->first.data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1142,9 +1149,9 @@ TEST_CASE("constructors")
             {
                 SECTION("constructor with implicit types (array)")
                 {
-                    json::array_t source = {1, 2, 3};
+                    json::array_t source = { 1, 2, 3 };
                     const auto* source_addr = source.data();
-                    json j {std::move(source)};
+                    json j{ std::move(source) };
                     const auto* target_addr = j[0].get_ref<json::array_t const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1152,9 +1159,9 @@ TEST_CASE("constructors")
 
                 SECTION("constructor with implicit types (object)")
                 {
-                    json::array_t source = {1, 2, 3};
+                    json::array_t source = { 1, 2, 3 };
                     const auto* source_addr = source.data();
-                    json const j {{"key", std::move(source)}};
+                    json const j{ { "key", std::move(source) } };
                     const auto* target_addr = j["key"].get_ref<json::array_t const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1162,9 +1169,9 @@ TEST_CASE("constructors")
 
                 SECTION("assignment with implicit types (array)")
                 {
-                    json::array_t source = {1, 2, 3};
+                    json::array_t source = { 1, 2, 3 };
                     const auto* source_addr = source.data();
-                    json j = {std::move(source)};
+                    json j = { std::move(source) };
                     const auto* target_addr = j[0].get_ref<json::array_t const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1172,9 +1179,9 @@ TEST_CASE("constructors")
 
                 SECTION("assignment with implicit types (object)")
                 {
-                    json::array_t source = {1, 2, 3};
+                    json::array_t source = { 1, 2, 3 };
                     const auto* source_addr = source.data();
-                    json j = {{"key", std::move(source)}};
+                    json j = { { "key", std::move(source) } };
                     const auto* target_addr = j["key"].get_ref<json::array_t const&>().data();
                     const bool success = (target_addr == source_addr);
                     CHECK(success);
@@ -1185,33 +1192,33 @@ TEST_CASE("constructors")
             {
                 SECTION("constructor with implicit types (array)")
                 {
-                    json::object_t source = {{"hello", "world"}};
+                    json::object_t source = { { "hello", "world" } };
                     const json* source_addr = &source.at("hello");
-                    json j {std::move(source)};
+                    json j{ std::move(source) };
                     CHECK(&(j[0].get_ref<json::object_t const&>().at("hello")) == source_addr);
                 }
 
                 SECTION("constructor with implicit types (object)")
                 {
-                    json::object_t source = {{"hello", "world"}};
+                    json::object_t source = { { "hello", "world" } };
                     const json* source_addr = &source.at("hello");
-                    json j {{"key", std::move(source)}};
+                    json j{ { "key", std::move(source) } };
                     CHECK(&(j["key"].get_ref<json::object_t const&>().at("hello")) == source_addr);
                 }
 
                 SECTION("assignment with implicit types (array)")
                 {
-                    json::object_t source = {{"hello", "world"}};
+                    json::object_t source = { { "hello", "world" } };
                     const json* source_addr = &source.at("hello");
-                    json j = {std::move(source)};
+                    json j = { std::move(source) };
                     CHECK(&(j[0].get_ref<json::object_t const&>().at("hello")) == source_addr);
                 }
 
                 SECTION("assignment with implicit types (object)")
                 {
-                    json::object_t source = {{"hello", "world"}};
+                    json::object_t source = { { "hello", "world" } };
                     const json* source_addr = &source.at("hello");
-                    json j = {{"key", std::move(source)}};
+                    json j = { { "key", std::move(source) } };
                     CHECK(&(j["key"].get_ref<json::object_t const&>().at("hello")) == source_addr);
                 }
             }
@@ -1220,37 +1227,36 @@ TEST_CASE("constructors")
             {
                 SECTION("constructor with implicit types (array)")
                 {
-                    json source {1, 2, 3};
+                    json source{ 1, 2, 3 };
                     const json* source_addr = &source[0];
-                    json j {std::move(source), {}};
+                    json j{ std::move(source), {} };
                     CHECK(&j[0][0] == source_addr);
                 }
 
                 SECTION("constructor with implicit types (object)")
                 {
-                    json source {1, 2, 3};
+                    json source{ 1, 2, 3 };
                     const json* source_addr = &source[0];
-                    json j {{"key", std::move(source)}};
+                    json j{ { "key", std::move(source) } };
                     CHECK(&j["key"][0] == source_addr);
                 }
 
                 SECTION("assignment with implicit types (array)")
                 {
-                    json source {1, 2, 3};
+                    json source{ 1, 2, 3 };
                     const json* source_addr = &source[0];
-                    json j = {std::move(source), {}};
+                    json j = { std::move(source), {} };
                     CHECK(&j[0][0] == source_addr);
                 }
 
                 SECTION("assignment with implicit types (object)")
                 {
-                    json source {1, 2, 3};
+                    json source{ 1, 2, 3 };
                     const json* source_addr = &source[0];
-                    json j = {{"key", std::move(source)}};
+                    json j = { { "key", std::move(source) } };
                     CHECK(&j["key"][0] == source_addr);
                 }
             }
-
         }
     }
 
@@ -1258,14 +1264,14 @@ TEST_CASE("constructors")
     {
         SECTION("cnt = 0")
         {
-            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const v = { 1, "foo", 34.23, { 1, 2, 3 }, { { "A", 1 }, { "B", 2u } } };
             json const arr(0, v);
             CHECK(arr.size() == 0);
         }
 
         SECTION("cnt = 1")
         {
-            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const v = { 1, "foo", 34.23, { 1, 2, 3 }, { { "A", 1 }, { "B", 2u } } };
             json const arr(1, v);
             CHECK(arr.size() == 1);
             for (const auto& x : arr)
@@ -1276,7 +1282,7 @@ TEST_CASE("constructors")
 
         SECTION("cnt = 3")
         {
-            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const v = { 1, "foo", 34.23, { 1, 2, 3 }, { { "A", 1 }, { "B", 2u } } };
             json const arr(3, v);
             CHECK(arr.size() == 3);
             for (const auto& x : arr)
@@ -1293,12 +1299,12 @@ TEST_CASE("constructors")
             SECTION("json(begin(), end())")
             {
                 {
-                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
                     json const j_new(jobject.begin(), jobject.end());
                     CHECK(j_new == jobject);
                 }
                 {
-                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
                     json const j_new(jobject.cbegin(), jobject.cend());
                     CHECK(j_new == jobject);
                 }
@@ -1307,12 +1313,12 @@ TEST_CASE("constructors")
             SECTION("json(begin(), begin())")
             {
                 {
-                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
                     json const j_new(jobject.begin(), jobject.begin());
                     CHECK(j_new == json::object());
                 }
                 {
-                    json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
                     json const j_new(jobject.cbegin(), jobject.cbegin());
                     CHECK(j_new == json::object());
                 }
@@ -1320,24 +1326,32 @@ TEST_CASE("constructors")
 
             SECTION("construct from subrange")
             {
-                json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                json const jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u }, { "d", false }, { "e", true } };
                 json const j_new(jobject.find("b"), jobject.find("e"));
-                CHECK(j_new == json({{"b", 1}, {"c", 17u}, {"d", false}}));
+                CHECK(j_new == json({ { "b", 1 }, { "c", 17u }, { "d", false } }));
             }
 
             SECTION("incompatible iterators")
             {
                 {
-                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                    json jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u }, { "d", false }, { "e", true } };
-                    json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json jobject2 = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
-                    CHECK_THROWS_WITH_AS(json(jobject.begin(), jobject2.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject.begin(), jobject2.end()),
-                    CHECK_THROWS_WITH_AS(json(jobject2.begin(), jobject.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject2.begin(), jobject.end()),
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
                 }
                 {
-                    json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                    json const jobject = { { "a", "a" }, { "b", 1 }, { "c", 17u }, { "d", false }, { "e", true } };
-                    json const jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const jobject2 = { { "a", "a" }, { "b", 1 }, { "c", 17u } };
-                    CHECK_THROWS_WITH_AS(json(jobject.cbegin(), jobject2.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject.cbegin(), jobject2.cend()),
-                    CHECK_THROWS_WITH_AS(json(jobject2.cbegin(), jobject.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject2.cbegin(), jobject.cend()),
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
                 }
             }
         }
@@ -1347,12 +1361,12 @@ TEST_CASE("constructors")
             SECTION("json(begin(), end())")
             {
                 {
-                    json jarray = {1, 2, 3, 4, 5};
+                    json jarray = { 1, 2, 3, 4, 5 };
                     json const j_new(jarray.begin(), jarray.end());
                     CHECK(j_new == jarray);
                 }
                 {
-                    json const jarray = {1, 2, 3, 4, 5};
+                    json const jarray = { 1, 2, 3, 4, 5 };
                     json const j_new(jarray.cbegin(), jarray.cend());
                     CHECK(j_new == jarray);
                 }
@@ -1361,12 +1375,12 @@ TEST_CASE("constructors")
             SECTION("json(begin(), begin())")
             {
                 {
-                    json jarray = {1, 2, 3, 4, 5};
+                    json jarray = { 1, 2, 3, 4, 5 };
                     json j_new(jarray.begin(), jarray.begin());
                     CHECK(j_new == json::array());
                 }
                 {
-                    json const jarray = {1, 2, 3, 4, 5};
+                    json const jarray = { 1, 2, 3, 4, 5 };
                     json const j_new(jarray.cbegin(), jarray.cbegin());
                     CHECK(j_new == json::array());
                 }
@@ -1375,30 +1389,38 @@ TEST_CASE("constructors")
             SECTION("construct from subrange")
             {
                 {
-                    json jarray = {1, 2, 3, 4, 5};
+                    json jarray = { 1, 2, 3, 4, 5 };
                     json const j_new(jarray.begin() + 1, jarray.begin() + 3);
-                    CHECK(j_new == json({2, 3}));
+                    CHECK(j_new == json({ 2, 3 }));
                 }
                 {
-                    json const jarray = {1, 2, 3, 4, 5};
+                    json const jarray = { 1, 2, 3, 4, 5 };
                     json const j_new(jarray.cbegin() + 1, jarray.cbegin() + 3);
-                    CHECK(j_new == json({2, 3}));
+                    CHECK(j_new == json({ 2, 3 }));
                 }
             }
 
             SECTION("incompatible iterators")
             {
                 {
-                    json jarray = {1, 2, 3, 4};
+                    json jarray = { 1, 2, 3, 4 };
-                    json jarray2 = {2, 3, 4, 5};
+                    json jarray2 = { 2, 3, 4, 5 };
-                    CHECK_THROWS_WITH_AS(json(jarray.begin(), jarray2.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray.begin(), jarray2.end()),
-                    CHECK_THROWS_WITH_AS(json(jarray2.begin(), jarray.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray2.begin(), jarray.end()),
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
                 }
                 {
-                    json const jarray = {1, 2, 3, 4};
+                    json const jarray = { 1, 2, 3, 4 };
-                    json const jarray2 = {2, 3, 4, 5};
+                    json const jarray2 = { 2, 3, 4, 5 };
-                    CHECK_THROWS_WITH_AS(json(jarray.cbegin(), jarray2.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray.cbegin(), jarray2.cend()),
-                    CHECK_THROWS_WITH_AS(json(jarray2.cbegin(), jarray.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray2.cbegin(), jarray.cend()),
+                                         "[json.exception.invalid_iterator.201] iterators are not compatible",
+                                         json::invalid_iterator&);
                 }
             }
         }
@@ -1411,11 +1433,15 @@ TEST_CASE("constructors")
                 {
                     {
                         json j;
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.end()), "[json.exception.invalid_iterator.206] cannot construct with iterators from null", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.end()),
+                                             "[json.exception.invalid_iterator.206] cannot construct with iterators from null",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j;
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cend()), "[json.exception.invalid_iterator.206] cannot construct with iterators from null", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cend()),
+                                             "[json.exception.invalid_iterator.206] cannot construct with iterators from null",
+                                             json::invalid_iterator&);
                     }
                 }
 
@@ -1492,12 +1518,12 @@ TEST_CASE("constructors")
                 SECTION("binary")
                 {
                     {
-                        json j = json::binary({1, 2, 3});
+                        json j = json::binary({ 1, 2, 3 });
                         json const j_new(j.begin(), j.end());
                         CHECK((j == j_new));
                     }
                     {
-                        json const j = json::binary({1, 2, 3});
+                        json const j = json::binary({ 1, 2, 3 });
                         json const j_new(j.cbegin(), j.cend());
                         CHECK((j == j_new));
                     }
@@ -1511,12 +1537,16 @@ TEST_CASE("constructors")
                     {
                         json j = "foo";
                         CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j = "bar";
                         CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                 }
 
@@ -1525,12 +1555,16 @@ TEST_CASE("constructors")
                     {
                         json j = false;
                         CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j = true;
                         CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                 }
 
@@ -1539,12 +1573,16 @@ TEST_CASE("constructors")
                     {
                         json j = 17;
                         CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j = 17;
                         CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                 }
 
@@ -1553,12 +1591,16 @@ TEST_CASE("constructors")
                     {
                         json j = 17u;
                         CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j = 17u;
                         CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                 }
 
@@ -1567,12 +1609,16 @@ TEST_CASE("constructors")
                     {
                         json j = 23.42;
                         CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                     {
                         json const j = 23.42;
                         CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()),
+                                             "[json.exception.invalid_iterator.204] iterators out of range",
+                                             json::invalid_iterator&);
                     }
                 }
             }

tests/src/unit-constructor2.cpp

@@ -17,14 +17,14 @@ TEST_CASE("other constructors and destructor")
     {
         SECTION("object")
         {
-            json j {{"foo", 1}, {"bar", false}};
+            json j{ { "foo", 1 }, { "bar", false } };
             json k(j);  // NOLINT(performance-unnecessary-copy-initialization)
             CHECK(j == k);
         }
 
         SECTION("array")
         {
-            json j {"foo", 1, 42.23, false};
+            json j{ "foo", 1, 42.23, false };
             json k(j);  // NOLINT(performance-unnecessary-copy-initialization)
             CHECK(j == k);
         }
@@ -73,7 +73,7 @@ TEST_CASE("other constructors and destructor")
 
         SECTION("binary")
         {
-            json j = json::binary({1, 2, 3});
+            json j = json::binary({ 1, 2, 3 });
             json k(j);  // NOLINT(performance-unnecessary-copy-initialization)
             CHECK(j == k);
         }
@@ -81,7 +81,7 @@ TEST_CASE("other constructors and destructor")
 
     SECTION("move constructor")
     {
-        json j {{"foo", "bar"}, {"baz", {1, 2, 3, 4}}, {"a", 42u}, {"b", 42.23}, {"c", nullptr}};
+        json j{ { "foo", "bar" }, { "baz", { 1, 2, 3, 4 } }, { "a", 42u }, { "b", 42.23 }, { "c", nullptr } };
         CHECK(j.type() == json::value_t::object);
         const json k(std::move(j));
         CHECK(k.type() == json::value_t::object);
@@ -92,7 +92,7 @@ TEST_CASE("other constructors and destructor")
     {
         SECTION("object")
         {
-            json j {{"foo", 1}, {"bar", false}};
+            json j{ { "foo", 1 }, { "bar", false } };
             json k;
             k = j;
             CHECK(j == k);
@@ -100,7 +100,7 @@ TEST_CASE("other constructors and destructor")
 
         SECTION("array")
         {
-            json j {"foo", 1, 42.23, false};
+            json j{ "foo", 1, 42.23, false };
             json k;
             k = j;
             CHECK(j == k);
@@ -156,7 +156,7 @@ TEST_CASE("other constructors and destructor")
 
         SECTION("binary")
         {
-            json j = json::binary({1, 2, 3});
+            json j = json::binary({ 1, 2, 3 });
             json k;
             k = j;
             CHECK(j == k);
@@ -167,13 +167,13 @@ TEST_CASE("other constructors and destructor")
     {
         SECTION("object")
         {
-            auto* j = new json {{"foo", 1}, {"bar", false}}; // NOLINT(cppcoreguidelines-owning-memory)
+            auto* j = new json{ { "foo", 1 }, { "bar", false } };  // NOLINT(cppcoreguidelines-owning-memory)
             delete j;                                              // NOLINT(cppcoreguidelines-owning-memory)
         }
 
         SECTION("array")
         {
-            auto* j = new json {"foo", 1, 1u, false, 23.42}; // NOLINT(cppcoreguidelines-owning-memory)
+            auto* j = new json{ "foo", 1, 1u, false, 23.42 };  // NOLINT(cppcoreguidelines-owning-memory)
             delete j;                                          // NOLINT(cppcoreguidelines-owning-memory)
         }
 

tests/src/unit-convenience.cpp

@@ -173,8 +173,8 @@ TEST_CASE("convenience functions")
         using nlohmann::detail::concat;
 
         const char* expected = "Hello, world!";
-        alt_string_iter const hello_iter{"Hello, "};
+        alt_string_iter const hello_iter{ "Hello, " };
-        alt_string_data const hello_data{"Hello, "};
+        alt_string_data const hello_data{ "Hello, " };
         std::string const world = "world";
 
         SECTION("std::string")

tests/src/unit-custom-base-class.cpp

@@ -30,14 +30,13 @@ class json_metadata
     {
         return m_metadata;
     }
+
   private:
     metadata_t m_metadata = {};
 };
 
 template<class T>
-using json_with_metadata =
+using json_with_metadata = nlohmann::basic_json<std::map,
-    nlohmann::basic_json <
-    std::map,
                                                 std::vector,
                                                 std::string,
                                                 bool,
@@ -47,8 +46,7 @@ using json_with_metadata =
                                                 std::allocator,
                                                 nlohmann::adl_serializer,
                                                 std::vector<std::uint8_t>,
-    json_metadata<T>
+                                                json_metadata<T>>;
-    >;
 
 TEST_CASE("JSON Node Metadata")
 {
@@ -188,15 +186,15 @@ TEST_CASE("JSON Node Metadata")
 class visitor_adaptor
 {
   public:
-    template <class Fnc>
+    template<class Fnc>
     void visit(const Fnc& fnc) const;
+
   private:
-    template <class Ptr, class Fnc>
+    template<class Ptr, class Fnc>
     void do_visit(const Ptr& ptr, const Fnc& fnc) const;
 };
 
-using json_with_visitor_t = nlohmann::basic_json <
+using json_with_visitor_t = nlohmann::basic_json<std::map,
-                            std::map,
                                                  std::vector,
                                                  std::string,
                                                  bool,
@@ -206,16 +204,15 @@ using json_with_visitor_t = nlohmann::basic_json <
                                                  std::allocator,
                                                  nlohmann::adl_serializer,
                                                  std::vector<std::uint8_t>,
-                            visitor_adaptor
+                                                 visitor_adaptor>;
-                            >;
 
-template <class Fnc>
+template<class Fnc>
 void visitor_adaptor::visit(const Fnc& fnc) const
 {
     do_visit(json_with_visitor_t::json_pointer{}, fnc);
 }
 
-template <class Ptr, class Fnc>
+template<class Ptr, class Fnc>
 void visitor_adaptor::do_visit(const Ptr& ptr, const Fnc& fnc) const
 {
     using value_t = nlohmann::detail::value_t;
@@ -261,9 +258,7 @@ TEST_CASE("JSON Visit Node")
     json["array"].push_back(1);
     json["array"].push_back(json);
 
-    std::set<std::string> expected
+    std::set<std::string> expected{ "/null - null - null",
-    {
-        "/null - null - null",
                                     "/int - number_integer - -1",
                                     "/uint - number_unsigned - 1",
                                     "/float - number_float - 1.0",
@@ -279,15 +274,11 @@ TEST_CASE("JSON Visit Node")
                                     "/array/2/boolean - boolean - true",
                                     "/array/2/string - string - \"string\"",
                                     "/array/2/array/0 - number_integer - 0",
-        "/array/2/array/1 - number_integer - 1"
+                                    "/array/2/array/1 - number_integer - 1" };
-    };
 
-    json.visit(
+    json.visit([&](const json_with_visitor_t::json_pointer& p, const json_with_visitor_t& j) {
-        [&](const json_with_visitor_t::json_pointer & p,
-            const json_with_visitor_t& j)
-    {
         std::stringstream str;
-        str << p.to_string() << " - " ;
+        str << p.to_string() << " - ";
         using value_t = nlohmann::detail::value_t;
         switch (j.type())
         {
@@ -330,7 +321,6 @@ TEST_CASE("JSON Visit Node")
         INFO(str.str());
         CHECK(expected.count(str.str()) == 1);
         expected.erase(str.str());
-    }
+    });
-    );
     CHECK(expected.empty());
 }

tests/src/unit-deserialization.cpp

@@ -12,7 +12,7 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 #ifdef JSON_TEST_NO_GLOBAL_UDLS
-    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+using namespace nlohmann::literals;  // NOLINT(google-build-using-namespace)
 #endif
 
 #include <iostream>
@@ -125,7 +125,7 @@ struct SaxEventLogger : public nlohmann::json_sax<json>
         return false;
     }
 
-    std::vector<std::string> events {};
+    std::vector<std::string> events{};
 };
 
 struct SaxEventLoggerExitAfterStartObject : public SaxEventLogger
@@ -169,7 +169,7 @@ struct SaxEventLoggerExitAfterStartArray : public SaxEventLogger
     }
 };
 
-template <typename T>
+template<typename T>
 class proxy_iterator
 {
   public:
@@ -177,12 +177,13 @@ class proxy_iterator
     using value_type = typename std::iterator_traits<iterator>::value_type;
     using reference = typename std::iterator_traits<iterator>::reference;
     using pointer = typename std::iterator_traits<iterator>::pointer;
-    using difference_type =
+    using difference_type = typename std::iterator_traits<iterator>::difference_type;
-        typename std::iterator_traits<iterator>::difference_type;
     using iterator_category = std::input_iterator_tag;
 
     proxy_iterator() = default;
-    explicit proxy_iterator(iterator& it) : m_it(std::addressof(it)) {}
+    explicit proxy_iterator(iterator& it)
+      : m_it(std::addressof(it))
+    {}
 
     proxy_iterator& operator++()
     {
@@ -230,18 +231,22 @@ TEST_CASE("deserialization")
             ss3 << R"(["foo",1,2,3,false,{"one":1}])";
             json j = json::parse(ss1);
             CHECK(json::accept(ss2));
-            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK(j == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
 
             SaxEventLogger l;
             CHECK(json::sax_parse(ss3, &l));
             CHECK(l.events.size() == 11);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "start_array()",
-            {
+                                                         "string(foo)",
-                "start_array()", "string(foo)", "number_unsigned(1)",
+                                                         "number_unsigned(1)",
-                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                                                         "number_unsigned(2)",
-                "start_object()", "key(one)", "number_unsigned(1)",
+                                                         "number_unsigned(3)",
-                "end_object()", "end_array()"
+                                                         "boolean(false)",
-            }));
+                                                         "start_object()",
+                                                         "key(one)",
+                                                         "number_unsigned(1)",
+                                                         "end_object()",
+                                                         "end_array()" }));
         }
 
         SECTION("string literal")
@@ -249,18 +254,22 @@ TEST_CASE("deserialization")
             const auto* s = R"(["foo",1,2,3,false,{"one":1}])";
             json j = json::parse(s);
             CHECK(json::accept(s));
-            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK(j == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
 
             SaxEventLogger l;
             CHECK(json::sax_parse(s, &l));
             CHECK(l.events.size() == 11);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "start_array()",
-            {
+                                                         "string(foo)",
-                "start_array()", "string(foo)", "number_unsigned(1)",
+                                                         "number_unsigned(1)",
-                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                                                         "number_unsigned(2)",
-                "start_object()", "key(one)", "number_unsigned(1)",
+                                                         "number_unsigned(3)",
-                "end_object()", "end_array()"
+                                                         "boolean(false)",
-            }));
+                                                         "start_object()",
+                                                         "key(one)",
+                                                         "number_unsigned(1)",
+                                                         "end_object()",
+                                                         "end_array()" }));
         }
 
         SECTION("string_t")
@@ -268,18 +277,22 @@ TEST_CASE("deserialization")
             json::string_t const s = R"(["foo",1,2,3,false,{"one":1}])";
             json j = json::parse(s);
             CHECK(json::accept(s));
-            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK(j == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
 
             SaxEventLogger l;
             CHECK(json::sax_parse(s, &l));
             CHECK(l.events.size() == 11);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "start_array()",
-            {
+                                                         "string(foo)",
-                "start_array()", "string(foo)", "number_unsigned(1)",
+                                                         "number_unsigned(1)",
-                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                                                         "number_unsigned(2)",
-                "start_object()", "key(one)", "number_unsigned(1)",
+                                                         "number_unsigned(3)",
-                "end_object()", "end_array()"
+                                                         "boolean(false)",
-            }));
+                                                         "start_object()",
+                                                         "key(one)",
+                                                         "number_unsigned(1)",
+                                                         "end_object()",
+                                                         "end_array()" }));
         }
 
         SECTION("operator<<")
@@ -288,7 +301,7 @@ TEST_CASE("deserialization")
             ss << R"(["foo",1,2,3,false,{"one":1}])";
             json j;
             j << ss;
-            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK(j == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
         }
 
         SECTION("operator>>")
@@ -297,12 +310,12 @@ TEST_CASE("deserialization")
             ss << R"(["foo",1,2,3,false,{"one":1}])";
             json j;
             ss >> j;
-            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK(j == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
         }
 
         SECTION("user-defined string literal")
         {
-            CHECK("[\"foo\",1,2,3,false,{\"one\":1}]"_json == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+            CHECK("[\"foo\",1,2,3,false,{\"one\":1}]"_json == json({ "foo", 1, 2, 3, false, { { "one", 1 } } }));
         }
     }
 
@@ -320,7 +333,10 @@ TEST_CASE("deserialization")
             ss5 << R"(["foo",1,2,3,false,{"one":1})";
 
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::parse(ss1), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(ss1),
+                "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'",
+                json::parse_error&);
             CHECK(!json::accept(ss3));
 
             json j_error;
@@ -330,20 +346,27 @@ TEST_CASE("deserialization")
             SaxEventLogger l;
             CHECK(!json::sax_parse(ss5, &l));
             CHECK(l.events.size() == 11);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "start_array()",
-            {
+                                                         "string(foo)",
-                "start_array()", "string(foo)", "number_unsigned(1)",
+                                                         "number_unsigned(1)",
-                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                                                         "number_unsigned(2)",
-                "start_object()", "key(one)", "number_unsigned(1)",
+                                                         "number_unsigned(3)",
-                "end_object()", "parse_error(29)"
+                                                         "boolean(false)",
-            }));
+                                                         "start_object()",
+                                                         "key(one)",
+                                                         "number_unsigned(1)",
+                                                         "end_object()",
+                                                         "parse_error(29)" }));
         }
 
         SECTION("string")
         {
             json::string_t const s = R"(["foo",1,2,3,false,{"one":1})";
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::parse(s), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(s),
+                "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'",
+                json::parse_error&);
             CHECK(!json::accept(s));
 
             json j_error;
@@ -353,13 +376,17 @@ TEST_CASE("deserialization")
             SaxEventLogger l;
             CHECK(!json::sax_parse(s, &l));
             CHECK(l.events.size() == 11);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "start_array()",
-            {
+                                                         "string(foo)",
-                "start_array()", "string(foo)", "number_unsigned(1)",
+                                                         "number_unsigned(1)",
-                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                                                         "number_unsigned(2)",
-                "start_object()", "key(one)", "number_unsigned(1)",
+                                                         "number_unsigned(3)",
-                "end_object()", "parse_error(29)"
+                                                         "boolean(false)",
-            }));
+                                                         "start_object()",
+                                                         "key(one)",
+                                                         "number_unsigned(1)",
+                                                         "end_object()",
+                                                         "parse_error(29)" }));
         }
 
         SECTION("operator<<")
@@ -367,7 +394,10 @@ TEST_CASE("deserialization")
             std::stringstream ss;
             ss << R"(["foo",1,2,3,false,{"one":1})";
             json j;
-            CHECK_THROWS_WITH_AS(j << ss, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                j << ss,
+                "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'",
+                json::parse_error&);
         }
 
         SECTION("operator>>")
@@ -375,12 +405,18 @@ TEST_CASE("deserialization")
             std::stringstream ss;
             ss << R"(["foo",1,2,3,false,{"one":1})";
             json j;
-            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                ss >> j,
+                "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'",
+                json::parse_error&);
         }
 
         SECTION("user-defined string literal")
         {
-            CHECK_THROWS_WITH_AS("[\"foo\",1,2,3,false,{\"one\":1}"_json, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                "[\"foo\",1,2,3,false,{\"one\":1}"_json,
+                "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'",
+                json::parse_error&);
         }
     }
 
@@ -390,38 +426,38 @@ TEST_CASE("deserialization")
         {
             SECTION("from std::vector")
             {
-                std::vector<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                std::vector<uint8_t> const v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(v) == json(true));
                 CHECK(json::accept(v));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from std::array")
             {
-                std::array<uint8_t, 5> const v { {'t', 'r', 'u', 'e'} };
+                std::array<uint8_t, 5> const v{ { 't', 'r', 'u', 'e' } };
                 CHECK(json::parse(v) == json(true));
                 CHECK(json::accept(v));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from array")
             {
-                uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                uint8_t v[] = { 't', 'r', 'u', 'e' };  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
                 CHECK(json::parse(v) == json(true));
                 CHECK(json::accept(v));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from chars")
@@ -438,33 +474,33 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
 
                 delete[] v;  // NOLINT(cppcoreguidelines-owning-memory)
             }
 
             SECTION("from std::string")
             {
-                std::string const v = {'t', 'r', 'u', 'e'};
+                std::string const v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(v) == json(true));
                 CHECK(json::accept(v));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from std::initializer_list")
             {
-                std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                std::initializer_list<uint8_t> const v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(v) == json(true));
                 CHECK(json::accept(v));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("empty container")
@@ -477,7 +513,7 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(v, &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(1)" }));
             }
         }
 
@@ -485,75 +521,74 @@ TEST_CASE("deserialization")
         {
             SECTION("from std::vector")
             {
-                std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
+                std::vector<uint8_t> v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
-
             }
 
             SECTION("from std::array")
             {
-                std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} };
+                std::array<uint8_t, 5> v{ { 't', 'r', 'u', 'e' } };
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from array")
             {
-                uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                uint8_t v[] = { 't', 'r', 'u', 'e' };  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from std::string")
             {
-                std::string v = {'t', 'r', 'u', 'e'};
+                std::string v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from std::initializer_list")
             {
-                std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                std::initializer_list<uint8_t> const v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("from std::valarray")
             {
-                std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
+                std::valarray<uint8_t> v = { 't', 'r', 'u', 'e' };
                 CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
                 CHECK(json::accept(std::begin(v), std::end(v)));
 
                 SaxEventLogger l;
                 CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+                CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
             }
 
             SECTION("with empty range")
@@ -566,7 +601,7 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(1)" }));
             }
 
             SECTION("iterator_input_adapter advances iterators correctly")
@@ -585,8 +620,7 @@ TEST_CASE("deserialization")
                 json j;
                 json_sax_dom_parser<json> sax(j, true);
 
-                CHECK(json::sax_parse(proxy(first), proxy(last), &sax,
+                CHECK(json::sax_parse(proxy(first), proxy(last), &sax, input_format_t::json, false));
-                                      input_format_t::json, false));
                 CHECK(j.dump() == str1);
                 CHECK(std::string(first, last) == str2);
             }
@@ -597,7 +631,7 @@ TEST_CASE("deserialization")
         {
             SECTION("case 1")
             {
-                std::array<std::uint8_t, 9> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u'}};
+                std::array<std::uint8_t, 9> v = { { '\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u' } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -609,12 +643,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(10)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(10)" }));
             }
 
             SECTION("case 2")
             {
-                std::array<std::uint8_t, 10> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1'}};
+                std::array<std::uint8_t, 10> v = { { '\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1' } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -626,12 +660,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(11)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(11)" }));
             }
 
             SECTION("case 3")
             {
-                std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1', '1', '1', '1', '1', '1', '1', '1'}};
+                std::array<std::uint8_t, 17> v = { { '\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1', '1', '1', '1', '1', '1', '1', '1' } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -643,12 +677,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(18)" }));
             }
 
             SECTION("case 4")
             {
-                std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', 'u', '1', '1', '1', '1', '1', '1', '1', '1', '\\'}};
+                std::array<std::uint8_t, 17> v = { { '\"', 'a', 'a', 'a', 'a', 'a', 'a', 'u', '1', '1', '1', '1', '1', '1', '1', '1', '\\' } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -660,12 +694,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(18)" }));
             }
 
             SECTION("case 5")
             {
-                std::array<std::uint8_t, 3> v = {{'\"', 0x7F, 0xC1}};
+                std::array<std::uint8_t, 3> v = { { '\"', 0x7F, 0xC1 } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -677,14 +711,17 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(3)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(3)" }));
             }
 
             SECTION("case 6")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0x7F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xDF, 0x7F } };
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::parse(std::begin(v), std::end(v)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '\"\x7f\xdf\x7f'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(
+                    _ = json::parse(std::begin(v), std::end(v)),
+                    "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '\"\x7f\xdf\x7f'",
+                    json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
 
                 json j_error;
@@ -694,12 +731,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 7")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0xC0}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xDF, 0xC0 } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -711,12 +748,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 8")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xE0, 0x9F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xE0, 0x9F } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -728,12 +765,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 9")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xEF, 0xC0}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xEF, 0xC0 } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -745,12 +782,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 10")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xED, 0x7F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xED, 0x7F } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -762,12 +799,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 11")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0x8F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xF0, 0x8F } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -779,12 +816,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 12")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0xC0}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xF0, 0xC0 } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -796,12 +833,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 13")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0x7F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xF3, 0x7F } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -813,12 +850,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 14")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0xC0}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xF3, 0xC0 } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -830,12 +867,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 15")
             {
-                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF4, 0x7F}};
+                std::array<std::uint8_t, 4> v = { { '\"', 0x7F, 0xF4, 0x7F } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -847,12 +884,12 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 1);
-                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+                CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
             }
 
             SECTION("case 16")
             {
-                std::array<std::uint8_t, 6> v = {{'{', '\"', '\"', ':', '1', '1'}};
+                std::array<std::uint8_t, 6> v = { { '{', '\"', '\"', ':', '1', '1' } };
                 json _;
                 CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
                 CHECK(!json::accept(std::begin(v), std::end(v)));
@@ -864,11 +901,7 @@ TEST_CASE("deserialization")
                 SaxEventLogger l;
                 CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
                 CHECK(l.events.size() == 4);
-                CHECK(l.events == std::vector<std::string>(
+                CHECK(l.events == std::vector<std::string>({ "start_object()", "key()", "number_unsigned(11)", "parse_error(7)" }));
-                {
-                    "start_object()", "key()", "number_unsigned(11)",
-                    "parse_error(7)"
-                }));
             }
         }
     }
@@ -880,17 +913,20 @@ TEST_CASE("deserialization")
         SECTION("BOM only")
         {
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::parse(bom), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(bom),
+                "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal",
+                json::parse_error&);
 
-            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(std::istringstream(bom)),
+                "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal",
+                json::parse_error&);
 
             SaxEventLogger l;
             CHECK(!json::sax_parse(bom, &l));
             CHECK(l.events.size() == 1);
-            CHECK(l.events == std::vector<std::string>(
+            CHECK(l.events == std::vector<std::string>({ "parse_error(4)" }));
-            {
-                "parse_error(4)"
-            }));
         }
 
         SECTION("BOM and content")
@@ -903,61 +939,55 @@ TEST_CASE("deserialization")
             CHECK(json::sax_parse(std::istringstream(bom + "1"), &l1));
             CHECK(json::sax_parse(bom + "1", &l2));
             CHECK(l1.events.size() == 1);
-            CHECK(l1.events == std::vector<std::string>(
+            CHECK(l1.events == std::vector<std::string>({ "number_unsigned(1)" }));
-            {
-                "number_unsigned(1)"
-            }));
             CHECK(l2.events.size() == 1);
-            CHECK(l2.events == std::vector<std::string>(
+            CHECK(l2.events == std::vector<std::string>({ "number_unsigned(1)" }));
-            {
-                "number_unsigned(1)"
-            }));
         }
 
         SECTION("2 byte of BOM")
         {
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 2)), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(bom.substr(0, 2)),
+                "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'",
+                json::parse_error&);
 
-            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 2))), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(std::istringstream(bom.substr(0, 2))),
+                "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'",
+                json::parse_error&);
 
             SaxEventLogger l1;
             SaxEventLogger l2;
             CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 2)), &l1));
             CHECK(!json::sax_parse(bom.substr(0, 2), &l2));
             CHECK(l1.events.size() == 1);
-            CHECK(l1.events == std::vector<std::string>(
+            CHECK(l1.events == std::vector<std::string>({ "parse_error(3)" }));
-            {
-                "parse_error(3)"
-            }));
             CHECK(l2.events.size() == 1);
-            CHECK(l2.events == std::vector<std::string>(
+            CHECK(l2.events == std::vector<std::string>({ "parse_error(3)" }));
-            {
-                "parse_error(3)"
-            }));
         }
 
         SECTION("1 byte of BOM")
         {
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 1)), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(bom.substr(0, 1)),
+                "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'",
+                json::parse_error&);
 
-            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 1))), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::parse(std::istringstream(bom.substr(0, 1))),
+                "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'",
+                json::parse_error&);
 
             SaxEventLogger l1;
             SaxEventLogger l2;
             CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 1)), &l1));
             CHECK(!json::sax_parse(bom.substr(0, 1), &l2));
             CHECK(l1.events.size() == 1);
-            CHECK(l1.events == std::vector<std::string>(
+            CHECK(l1.events == std::vector<std::string>({ "parse_error(2)" }));
-            {
-                "parse_error(2)"
-            }));
             CHECK(l2.events.size() == 1);
-            CHECK(l2.events == std::vector<std::string>(
+            CHECK(l2.events == std::vector<std::string>({ "parse_error(2)" }));
-            {
-                "parse_error(2)"
-            }));
         }
 
         SECTION("variations")
@@ -989,10 +1019,7 @@ TEST_CASE("deserialization")
                             SaxEventLogger l;
                             CHECK(json::sax_parse(s + "null", &l));
                             CHECK(l.events.size() == 1);
-                            CHECK(l.events == std::vector<std::string>(
+                            CHECK(l.events == std::vector<std::string>({ "null()" }));
-                            {
-                                "null()"
-                            }));
                         }
                         else
                         {
@@ -1007,24 +1034,15 @@ TEST_CASE("deserialization")
 
                             if (i0 != 0)
                             {
-                                CHECK(l.events == std::vector<std::string>(
+                                CHECK(l.events == std::vector<std::string>({ "parse_error(1)" }));
-                                {
-                                    "parse_error(1)"
-                                }));
                             }
                             else if (i1 != 0)
                             {
-                                CHECK(l.events == std::vector<std::string>(
+                                CHECK(l.events == std::vector<std::string>({ "parse_error(2)" }));
-                                {
-                                    "parse_error(2)"
-                                }));
                             }
                             else
                             {
-                                CHECK(l.events == std::vector<std::string>(
+                                CHECK(l.events == std::vector<std::string>({ "parse_error(3)" }));
-                                {
-                                    "parse_error(3)"
-                                }));
                             }
                         }
                     }
@@ -1054,38 +1072,47 @@ TEST_CASE("deserialization")
 
         json::sax_parse(s, &default_logger);
         CHECK(default_logger.events.size() == 14);
-        CHECK(default_logger.events == std::vector<std::string>(
+        CHECK(default_logger.events == std::vector<std::string>({ "start_array()",
-        {
+                                                                  "number_unsigned(1)",
-            "start_array()", "number_unsigned(1)", "start_array()",
+                                                                  "start_array()",
-            "string(string)", "number_float(43.12)", "end_array()", "null()",
+                                                                  "string(string)",
-            "start_object()", "key(key1)", "boolean(true)", "key(key2)",
+                                                                  "number_float(43.12)",
-            "boolean(false)", "end_object()", "end_array()"
+                                                                  "end_array()",
-        }));
+                                                                  "null()",
+                                                                  "start_object()",
+                                                                  "key(key1)",
+                                                                  "boolean(true)",
+                                                                  "key(key2)",
+                                                                  "boolean(false)",
+                                                                  "end_object()",
+                                                                  "end_array()" }));
 
         json::sax_parse(s, &exit_after_start_object);
         CHECK(exit_after_start_object.events.size() == 8);
-        CHECK(exit_after_start_object.events == std::vector<std::string>(
+        CHECK(exit_after_start_object.events == std::vector<std::string>({ "start_array()",
-        {
+                                                                           "number_unsigned(1)",
-            "start_array()", "number_unsigned(1)", "start_array()",
+                                                                           "start_array()",
-            "string(string)", "number_float(43.12)", "end_array()", "null()",
+                                                                           "string(string)",
-            "start_object()"
+                                                                           "number_float(43.12)",
-        }));
+                                                                           "end_array()",
+                                                                           "null()",
+                                                                           "start_object()" }));
 
         json::sax_parse(s, &exit_after_key);
         CHECK(exit_after_key.events.size() == 9);
-        CHECK(exit_after_key.events == std::vector<std::string>(
+        CHECK(exit_after_key.events == std::vector<std::string>({ "start_array()",
-        {
+                                                                  "number_unsigned(1)",
-            "start_array()", "number_unsigned(1)", "start_array()",
+                                                                  "start_array()",
-            "string(string)", "number_float(43.12)", "end_array()", "null()",
+                                                                  "string(string)",
-            "start_object()", "key(key1)"
+                                                                  "number_float(43.12)",
-        }));
+                                                                  "end_array()",
+                                                                  "null()",
+                                                                  "start_object()",
+                                                                  "key(key1)" }));
 
         json::sax_parse(s, &exit_after_start_array);
         CHECK(exit_after_start_array.events.size() == 1);
-        CHECK(exit_after_start_array.events == std::vector<std::string>(
+        CHECK(exit_after_start_array.events == std::vector<std::string>({ "start_array()" }));
-        {
-            "start_array()"
-        }));
     }
 
     SECTION("JSON Lines")
@@ -1131,29 +1158,37 @@ TEST_CASE("deserialization")
     }
 }
 
-TEST_CASE_TEMPLATE("deserialization of different character types (ASCII)", T,
+TEST_CASE_TEMPLATE("deserialization of different character types (ASCII)",
-                   char, unsigned char, signed char,
+                   T,
+                   char,
+                   unsigned char,
+                   signed char,
                    wchar_t,
-                   char16_t, char32_t,
+                   char16_t,
-                   std::uint8_t, std::int8_t,
+                   char32_t,
-                   std::int16_t, std::uint16_t,
+                   std::uint8_t,
-                   std::int32_t, std::uint32_t)
+                   std::int8_t,
+                   std::int16_t,
+                   std::uint16_t,
+                   std::int32_t,
+                   std::uint32_t)
 {
-    std::vector<T> const v = {'t', 'r', 'u', 'e'};
+    std::vector<T> const v = { 't', 'r', 'u', 'e' };
     CHECK(json::parse(v) == json(true));
     CHECK(json::accept(v));
 
     SaxEventLogger l;
     CHECK(json::sax_parse(v, &l));
     CHECK(l.events.size() == 1);
-    CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+    CHECK(l.events == std::vector<std::string>({ "boolean(true)" }));
 }
 
-TEST_CASE_TEMPLATE("deserialization of different character types (UTF-8)", T,
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-8)", T, char, unsigned char, std::uint8_t)
-                   char, unsigned char, std::uint8_t)
 {
     // a star emoji
-    std::vector<T> const v = {'"', static_cast<T>(0xe2u), static_cast<T>(0xadu), static_cast<T>(0x90u), static_cast<T>(0xefu), static_cast<T>(0xb8u), static_cast<T>(0x8fu), '"'};
+    std::vector<T> const v = {
+        '"', static_cast<T>(0xe2u), static_cast<T>(0xadu), static_cast<T>(0x90u), static_cast<T>(0xefu), static_cast<T>(0xb8u), static_cast<T>(0x8fu), '"'
+    };
     CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
     CHECK(json::accept(v));
 
@@ -1162,11 +1197,10 @@ TEST_CASE_TEMPLATE("deserialization of different character types (UTF-8)", T,
     CHECK(l.events.size() == 1);
 }
 
-TEST_CASE_TEMPLATE("deserialization of different character types (UTF-16)", T,
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-16)", T, char16_t, std::uint16_t)
-                   char16_t, std::uint16_t)
 {
     // a star emoji
-    std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
+    std::vector<T> const v = { static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"') };
     CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
     CHECK(json::accept(v));
 
@@ -1175,11 +1209,10 @@ TEST_CASE_TEMPLATE("deserialization of different character types (UTF-16)", T,
     CHECK(l.events.size() == 1);
 }
 
-TEST_CASE_TEMPLATE("deserialization of different character types (UTF-32)", T,
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-32)", T, char32_t, std::uint32_t)
-                   char32_t, std::uint32_t)
 {
     // a star emoji
-    std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
+    std::vector<T> const v = { static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"') };
     CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
     CHECK(json::accept(v));
 

tests/src/unit-diagnostics.cpp

@@ -32,7 +32,9 @@ TEST_CASE("Better diagnostics")
         json j;
         j["a"]["b"]["c"] = 1;
         std::string s;
-        CHECK_THROWS_WITH_AS(s = j["a"]["b"]["c"].get<std::string>(), "[json.exception.type_error.302] (/a/b/c) type must be string, but is number", json::type_error);
+        CHECK_THROWS_WITH_AS(s = j["a"]["b"]["c"].get<std::string>(),
+                             "[json.exception.type_error.302] (/a/b/c) type must be string, but is number",
+                             json::type_error);
     }
 
     SECTION("missing key")
@@ -53,14 +55,18 @@ TEST_CASE("Better diagnostics")
     {
         json j;
         j["array"][4] = true;
-        CHECK_THROWS_WITH_AS(j["array"][4][5], "[json.exception.type_error.305] (/array/4) cannot use operator[] with a numeric argument with boolean", json::type_error);
+        CHECK_THROWS_WITH_AS(j["array"][4][5],
+                             "[json.exception.type_error.305] (/array/4) cannot use operator[] with a numeric argument with boolean",
+                             json::type_error);
     }
 
     SECTION("wrong iterator")
     {
         json j;
         j["array"] = json::array();
-        CHECK_THROWS_WITH_AS(j["array"].erase(j.begin()), "[json.exception.invalid_iterator.202] (/array) iterator does not fit current value", json::invalid_iterator);
+        CHECK_THROWS_WITH_AS(j["array"].erase(j.begin()),
+                             "[json.exception.invalid_iterator.202] (/array) iterator does not fit current value",
+                             json::invalid_iterator);
     }
 
     SECTION("JSON Pointer escaping")
@@ -68,21 +74,28 @@ TEST_CASE("Better diagnostics")
         json j;
         j["a/b"]["m~n"] = 1;
         std::string s;
-        CHECK_THROWS_WITH_AS(s = j["a/b"]["m~n"].get<std::string>(), "[json.exception.type_error.302] (/a~1b/m~0n) type must be string, but is number", json::type_error);
+        CHECK_THROWS_WITH_AS(s = j["a/b"]["m~n"].get<std::string>(),
+                             "[json.exception.type_error.302] (/a~1b/m~0n) type must be string, but is number",
+                             json::type_error);
     }
 
     SECTION("Parse error")
     {
         json _;
-        CHECK_THROWS_WITH_AS(_ = json::parse(""), "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error);
+        CHECK_THROWS_WITH_AS(
+            _ = json::parse(""),
+            "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON",
+            json::parse_error);
     }
 
     SECTION("Wrong type in update()")
     {
-        json j = {{"foo", "bar"}};
+        json j = { { "foo", "bar" } };
-        json k = {{"bla", 1}};
+        json k = { { "bla", 1 } };
 
-        CHECK_THROWS_WITH_AS(j.update(k["bla"].begin(), k["bla"].end()), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
+        CHECK_THROWS_WITH_AS(j.update(k["bla"].begin(), k["bla"].end()),
+                             "[json.exception.type_error.312] (/bla) cannot use update() with number",
+                             json::type_error);
         CHECK_THROWS_WITH_AS(j.update(k["bla"]), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
     }
 }
@@ -91,14 +104,14 @@ TEST_CASE("Regression tests for extended diagnostics")
 {
     SECTION("Regression test for https://github.com/nlohmann/json/pull/2562#pullrequestreview-574858448")
     {
-        CHECK_THROWS_WITH_AS(json({"0", "0"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
+        CHECK_THROWS_WITH_AS(json({ "0", "0" })[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
-        CHECK_THROWS_WITH_AS(json({"0", "1"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
+        CHECK_THROWS_WITH_AS(json({ "0", "1" })[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
     }
 
     SECTION("Regression test for https://github.com/nlohmann/json/pull/2562/files/380a613f2b5d32425021129cd1f371ddcfd54ddf#r563259793")
     {
         json j;
-        j["/foo"] = {1, 2, 3};
+        j["/foo"] = { 1, 2, 3 };
         CHECK_THROWS_WITH_AS(j.unflatten(), "[json.exception.type_error.315] (/~1foo) values in object must be primitive", json::type_error);
     }
 
@@ -160,7 +173,7 @@ TEST_CASE("Regression tests for extended diagnostics")
         // iterator insert(const_iterator pos, const_iterator first, const_iterator last)
         {
             json j_arr = json::array();
-            json j_objects = {json::object(), json::object()};
+            json j_objects = { json::object(), json::object() };
             j_arr.insert(j_arr.begin(), j_objects.begin(), j_objects.end());
             json j_obj = json::object();
             j_obj["key"] = j_arr;

tests/src/unit-disabled_exceptions.cpp

@@ -23,7 +23,9 @@ using json = nlohmann::json;
 class sax_no_exception : public nlohmann::detail::json_sax_dom_parser<json>
 {
   public:
-    explicit sax_no_exception(json& j) : nlohmann::detail::json_sax_dom_parser<json>(j, false) {}
+    explicit sax_no_exception(json& j)
+      : nlohmann::detail::json_sax_dom_parser<json>(j, false)
+    {}
 
     static bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& ex)
     {
@@ -43,8 +45,9 @@ TEST_CASE("Tests with disabled exceptions")
         json j;
         sax_no_exception sax(j);
 
-        CHECK (!json::sax_parse("xyz", &sax));
+        CHECK(!json::sax_parse("xyz", &sax));
-        CHECK(*sax_no_exception::error_string == "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'x'");
+        CHECK(*sax_no_exception::error_string ==
+              "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'x'");
         delete sax_no_exception::error_string;  // NOLINT(cppcoreguidelines-owning-memory)
     }
 }

tests/src/unit-element_access1.cpp

@@ -16,7 +16,7 @@ TEST_CASE("element access 1")
 {
     SECTION("array")
     {
-        json j = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+        json j = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
         const json j_const = j;
 
         SECTION("access specified element with bounds checking")
@@ -30,7 +30,7 @@ TEST_CASE("element access 1")
                 CHECK(j.at(4) == json("string"));
                 CHECK(j.at(5) == json(42.23));
                 CHECK(j.at(6) == json::object());
-                CHECK(j.at(7) == json({1, 2, 3}));
+                CHECK(j.at(7) == json({ 1, 2, 3 }));
 
                 CHECK(j_const.at(0) == json(1));
                 CHECK(j_const.at(1) == json(1u));
@@ -39,15 +39,13 @@ TEST_CASE("element access 1")
                 CHECK(j_const.at(4) == json("string"));
                 CHECK(j_const.at(5) == json(42.23));
                 CHECK(j_const.at(6) == json::object());
-                CHECK(j_const.at(7) == json({1, 2, 3}));
+                CHECK(j_const.at(7) == json({ 1, 2, 3 }));
             }
 
             SECTION("access outside bounds")
             {
-                CHECK_THROWS_WITH_AS(j.at(8),
+                CHECK_THROWS_WITH_AS(j.at(8), "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
-                                     "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const.at(8), "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
-                CHECK_THROWS_WITH_AS(j_const.at(8),
-                                     "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
             }
 
             SECTION("access on non-array type")
@@ -121,8 +119,8 @@ TEST_CASE("element access 1")
         {
             CHECK(j.front() == json(1));
             CHECK(j_const.front() == json(1));
-            CHECK(j.back() == json({1, 2, 3}));
+            CHECK(j.back() == json({ 1, 2, 3 }));
-            CHECK(j_const.back() == json({1, 2, 3}));
+            CHECK(j_const.back() == json({ 1, 2, 3 }));
         }
 
         SECTION("access specified element")
@@ -136,7 +134,7 @@ TEST_CASE("element access 1")
                 CHECK(j[4] == json("string"));
                 CHECK(j[5] == json(42.23));
                 CHECK(j[6] == json::object());
-                CHECK(j[7] == json({1, 2, 3}));
+                CHECK(j[7] == json({ 1, 2, 3 }));
 
                 CHECK(j_const[0] == json(1));
                 CHECK(j_const[1] == json(1u));
@@ -145,7 +143,7 @@ TEST_CASE("element access 1")
                 CHECK(j_const[4] == json("string"));
                 CHECK(j_const[5] == json(42.23));
                 CHECK(j_const[6] == json::object());
-                CHECK(j_const[7] == json({1, 2, 3}));
+                CHECK(j_const[7] == json({ 1, 2, 3 }));
             }
 
             SECTION("access on non-array type")
@@ -157,14 +155,16 @@ TEST_CASE("element access 1")
                         json j_nonarray(json::value_t::null);
                         const json j_nonarray_const(j_nonarray);
                         CHECK_NOTHROW(j_nonarray[0]);
-                        CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with null", json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                             "[json.exception.type_error.305] cannot use operator[] with a numeric argument with null",
+                                             json::type_error&);
                     }
 
                     SECTION("implicit transformation to properly filled array")
                     {
                         json j_nonarray;
                         j_nonarray[3] = 42;
-                        CHECK(j_nonarray == json({nullptr, nullptr, nullptr, 42}));
+                        CHECK(j_nonarray == json({ nullptr, nullptr, nullptr, 42 }));
                     }
                 }
 
@@ -172,48 +172,72 @@ TEST_CASE("element access 1")
                 {
                     json j_nonarray(json::value_t::boolean);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean",
+                                         json::type_error&);
                 }
 
                 SECTION("string")
                 {
                     json j_nonarray(json::value_t::string);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string",
+                                         json::type_error&);
                 }
 
                 SECTION("object")
                 {
                     json j_nonarray(json::value_t::object);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object",
+                                         json::type_error&);
                 }
 
                 SECTION("number (integer)")
                 {
                     json j_nonarray(json::value_t::number_integer);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
                 }
 
                 SECTION("number (unsigned)")
                 {
                     json j_nonarray(json::value_t::number_unsigned);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
                 }
 
                 SECTION("number (floating-point)")
                 {
                     json j_nonarray(json::value_t::number_float);
                     const json j_nonarray_const(j_nonarray);
-                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray[0],
-                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0],
+                                         "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number",
+                                         json::type_error&);
                 }
             }
         }
@@ -223,47 +247,47 @@ TEST_CASE("element access 1")
             SECTION("remove element by index")
             {
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(0);
-                    CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(1);
-                    CHECK(jarray == json({1, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(2);
-                    CHECK(jarray == json({1, 1u, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, 1u, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(3);
-                    CHECK(jarray == json({1, 1u, true, "string", 42.23, json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, 1u, true, "string", 42.23, json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(4);
-                    CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, 1u, true, nullptr, 42.23, json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(5);
-                    CHECK(jarray == json({1, 1u, true, nullptr, "string", json::object(), {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, 1u, true, nullptr, "string", json::object(), { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(6);
-                    CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, {1, 2, 3}}));
+                    CHECK(jarray == json({ 1, 1u, true, nullptr, "string", 42.23, { 1, 2, 3 } }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     jarray.erase(7);
-                    CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object()}));
+                    CHECK(jarray == json({ 1, 1u, true, nullptr, "string", 42.23, json::object() }));
                 }
                 {
-                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                     CHECK_THROWS_WITH_AS(jarray.erase(8), "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
                 }
             }
@@ -273,15 +297,15 @@ TEST_CASE("element access 1")
                 SECTION("erase(begin())")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::iterator const it2 = jarray.erase(jarray.begin());
-                        CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(1u));
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::const_iterator const it2 = jarray.erase(jarray.cbegin());
-                        CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(1u));
                     }
                 }
@@ -289,13 +313,13 @@ TEST_CASE("element access 1")
                 SECTION("erase(begin(), end())")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::iterator it2 = jarray.erase(jarray.begin(), jarray.end());
                         CHECK(jarray == json::array());
                         CHECK(it2 == jarray.end());
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::const_iterator it2 = jarray.erase(jarray.cbegin(), jarray.cend());
                         CHECK(jarray == json::array());
                         CHECK(it2 == jarray.cend());
@@ -305,15 +329,15 @@ TEST_CASE("element access 1")
                 SECTION("erase(begin(), begin())")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::iterator const it2 = jarray.erase(jarray.begin(), jarray.begin());
-                        CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(1));
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::const_iterator const it2 = jarray.erase(jarray.cbegin(), jarray.cbegin());
-                        CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(1));
                     }
                 }
@@ -321,17 +345,17 @@ TEST_CASE("element access 1")
                 SECTION("erase at offset")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::iterator const it = jarray.begin() + 4;
                         json::iterator const it2 = jarray.erase(it);
-                        CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, nullptr, 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(42.23));
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::const_iterator const it = jarray.cbegin() + 4;
                         json::const_iterator const it2 = jarray.erase(it);
-                        CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, nullptr, 42.23, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json(42.23));
                     }
                 }
@@ -339,15 +363,15 @@ TEST_CASE("element access 1")
                 SECTION("erase subrange")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::iterator const it2 = jarray.erase(jarray.begin() + 3, jarray.begin() + 6);
-                        CHECK(jarray == json({1, 1u, true, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json::object());
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
                         json::const_iterator const it2 = jarray.erase(jarray.cbegin() + 3, jarray.cbegin() + 6);
-                        CHECK(jarray == json({1, 1u, true, json::object(), {1, 2, 3}}));
+                        CHECK(jarray == json({ 1, 1u, true, json::object(), { 1, 2, 3 } }));
                         CHECK(*it2 == json::object());
                     }
                 }
@@ -355,30 +379,38 @@ TEST_CASE("element access 1")
                 SECTION("different arrays")
                 {
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
-                        json jarray2 = {"foo", "bar"};
+                        json jarray2 = { "foo", "bar" };
 
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin()),
-                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray.begin(), jarray2.end()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin(), jarray.end()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin(), jarray2.end()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                     }
                     {
-                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray = { 1, 1u, true, nullptr, "string", 42.23, json::object(), { 1, 2, 3 } };
-                        json const jarray2 = {"foo", "bar"};
+                        json const jarray2 = { "foo", "bar" };
 
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin()),
-                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray.cbegin(), jarray2.cend()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin(), jarray.cend()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                         CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin(), jarray2.cend()),
-                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value",
+                                             json::invalid_iterator&);
                     }
                 }
             }
@@ -529,8 +561,7 @@ TEST_CASE("element access 1")
                 }
                 {
                     json j;
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin()),
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin()), "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
-                                         "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
                 }
             }
 
@@ -617,13 +648,13 @@ TEST_CASE("element access 1")
             SECTION("binary")
             {
                 {
-                    json j = json::binary({1, 2, 3});
+                    json j = json::binary({ 1, 2, 3 });
                     json::iterator it = j.erase(j.begin());
                     CHECK(j.type() == json::value_t::null);
                     CHECK(it == j.end());
                 }
                 {
-                    json j = json::binary({1, 2, 3});
+                    json j = json::binary({ 1, 2, 3 });
                     json::const_iterator it = j.erase(j.cbegin());
                     CHECK(j.type() == json::value_t::null);
                     CHECK(it == j.end());
@@ -791,13 +822,13 @@ TEST_CASE("element access 1")
             SECTION("binary")
             {
                 {
-                    json j = json::binary({1, 2, 3});
+                    json j = json::binary({ 1, 2, 3 });
                     json::iterator it = j.erase(j.begin(), j.end());
                     CHECK(j.type() == json::value_t::null);
                     CHECK(it == j.end());
                 }
                 {
-                    json j = json::binary({1, 2, 3});
+                    json j = json::binary({ 1, 2, 3 });
                     json::const_iterator it = j.erase(j.cbegin(), j.cend());
                     CHECK(j.type() == json::value_t::null);
                     CHECK(it == j.end());
@@ -812,12 +843,16 @@ TEST_CASE("element access 1")
                 {
                     json j = "foo";
                     CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
                 {
                     json j = "bar";
                     CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
             }
 
@@ -826,12 +861,16 @@ TEST_CASE("element access 1")
                 {
                     json j = false;
                     CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
                 {
                     json j = true;
                     CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
             }
 
@@ -840,12 +879,16 @@ TEST_CASE("element access 1")
                 {
                     json j = 17;
                     CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
                 {
                     json j = 17;
                     CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
             }
 
@@ -854,12 +897,16 @@ TEST_CASE("element access 1")
                 {
                     json j = 17u;
                     CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
                 {
                     json j = 17u;
                     CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
             }
 
@@ -868,12 +915,16 @@ TEST_CASE("element access 1")
                 {
                     json j = 23.42;
                     CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
                 {
                     json j = 23.42;
                     CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()),
+                                         "[json.exception.invalid_iterator.204] iterators out of range",
+                                         json::invalid_iterator&);
                 }
             }
         }

tests/src/unit-hash.cpp

@@ -23,42 +23,42 @@ TEST_CASE("hash<nlohmann::json>")
     std::set<std::size_t> hashes;
 
     // null
-    hashes.insert(std::hash<json> {}(json(nullptr)));
+    hashes.insert(std::hash<json>{}(json(nullptr)));
 
     // boolean
-    hashes.insert(std::hash<json> {}(json(true)));
+    hashes.insert(std::hash<json>{}(json(true)));
-    hashes.insert(std::hash<json> {}(json(false)));
+    hashes.insert(std::hash<json>{}(json(false)));
 
     // string
-    hashes.insert(std::hash<json> {}(json("")));
+    hashes.insert(std::hash<json>{}(json("")));
-    hashes.insert(std::hash<json> {}(json("foo")));
+    hashes.insert(std::hash<json>{}(json("foo")));
 
     // number
-    hashes.insert(std::hash<json> {}(json(0)));
+    hashes.insert(std::hash<json>{}(json(0)));
-    hashes.insert(std::hash<json> {}(json(static_cast<unsigned>(0))));
+    hashes.insert(std::hash<json>{}(json(static_cast<unsigned>(0))));
 
-    hashes.insert(std::hash<json> {}(json(-1)));
+    hashes.insert(std::hash<json>{}(json(-1)));
-    hashes.insert(std::hash<json> {}(json(0.0)));
+    hashes.insert(std::hash<json>{}(json(0.0)));
-    hashes.insert(std::hash<json> {}(json(42.23)));
+    hashes.insert(std::hash<json>{}(json(42.23)));
 
     // array
-    hashes.insert(std::hash<json> {}(json::array()));
+    hashes.insert(std::hash<json>{}(json::array()));
-    hashes.insert(std::hash<json> {}(json::array({1, 2, 3})));
+    hashes.insert(std::hash<json>{}(json::array({ 1, 2, 3 })));
 
     // object
-    hashes.insert(std::hash<json> {}(json::object()));
+    hashes.insert(std::hash<json>{}(json::object()));
-    hashes.insert(std::hash<json> {}(json::object({{"foo", "bar"}})));
+    hashes.insert(std::hash<json>{}(json::object({ { "foo", "bar" } })));
 
     // binary
-    hashes.insert(std::hash<json> {}(json::binary({})));
+    hashes.insert(std::hash<json>{}(json::binary({})));
-    hashes.insert(std::hash<json> {}(json::binary({}, 0)));
+    hashes.insert(std::hash<json>{}(json::binary({}, 0)));
-    hashes.insert(std::hash<json> {}(json::binary({}, 42)));
+    hashes.insert(std::hash<json>{}(json::binary({}, 42)));
-    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3})));
+    hashes.insert(std::hash<json>{}(json::binary({ 1, 2, 3 })));
-    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3}, 0)));
+    hashes.insert(std::hash<json>{}(json::binary({ 1, 2, 3 }, 0)));
-    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3}, 42)));
+    hashes.insert(std::hash<json>{}(json::binary({ 1, 2, 3 }, 42)));
 
     // discarded
-    hashes.insert(std::hash<json> {}(json(json::value_t::discarded)));
+    hashes.insert(std::hash<json>{}(json(json::value_t::discarded)));
 
     CHECK(hashes.size() == 21);
 }
@@ -72,42 +72,42 @@ TEST_CASE("hash<nlohmann::ordered_json>")
     std::set<std::size_t> hashes;
 
     // null
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(nullptr)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(nullptr)));
 
     // boolean
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(true)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(true)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(false)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(false)));
 
     // string
-    hashes.insert(std::hash<ordered_json> {}(ordered_json("")));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json("")));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json("foo")));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json("foo")));
 
     // number
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(0)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(0)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(static_cast<unsigned>(0))));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(static_cast<unsigned>(0))));
 
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(-1)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(-1)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(0.0)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(0.0)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(42.23)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(42.23)));
 
     // array
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::array()));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::array()));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::array({1, 2, 3})));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::array({ 1, 2, 3 })));
 
     // object
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::object()));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::object()));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::object({{"foo", "bar"}})));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::object({ { "foo", "bar" } })));
 
     // binary
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({})));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({})));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 0)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({}, 0)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 42)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({}, 42)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3})));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({ 1, 2, 3 })));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 0)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({ 1, 2, 3 }, 0)));
-    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 42)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json::binary({ 1, 2, 3 }, 42)));
 
     // discarded
-    hashes.insert(std::hash<ordered_json> {}(ordered_json(ordered_json::value_t::discarded)));
+    hashes.insert(std::hash<ordered_json>{}(ordered_json(ordered_json::value_t::discarded)));
 
     CHECK(hashes.size() == 21);
 }

tests/src/unit-inspection.cpp

@@ -11,9 +11,9 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 
+#include "make_test_data_available.hpp"
 #include <fstream>
 #include <sstream>
-#include "make_test_data_available.hpp"
 
 TEST_CASE("object inspection")
 {
@@ -21,7 +21,7 @@ TEST_CASE("object inspection")
     {
         SECTION("object")
         {
-            json const j {{"foo", 1}, {"bar", false}};
+            json const j{ { "foo", 1 }, { "bar", false } };
             CHECK(!j.is_null());
             CHECK(!j.is_boolean());
             CHECK(!j.is_number());
@@ -39,7 +39,7 @@ TEST_CASE("object inspection")
 
         SECTION("array")
         {
-            json const j {"foo", 1, 1u, 42.23, false};
+            json const j{ "foo", 1, 1u, 42.23, false };
             CHECK(!j.is_null());
             CHECK(!j.is_boolean());
             CHECK(!j.is_number());
@@ -202,12 +202,12 @@ TEST_CASE("object inspection")
 
     SECTION("serialization")
     {
-        json const j {{"object", json::object()}, {"array", {1, 2, 3, 4}}, {"number", 42}, {"boolean", false}, {"null", nullptr}, {"string", "Hello world"} };
+        json const j{ { "object", json::object() }, { "array", { 1, 2, 3, 4 } }, { "number", 42 },
+                      { "boolean", false },         { "null", nullptr },         { "string", "Hello world" } };
 
         SECTION("no indent / indent=-1")
         {
-            CHECK(j.dump() ==
+            CHECK(j.dump() == "{\"array\":[1,2,3,4],\"boolean\":false,\"null\":null,\"number\":42,\"object\":{},\"string\":\"Hello world\"}");
-                  "{\"array\":[1,2,3,4],\"boolean\":false,\"null\":null,\"number\":42,\"object\":{},\"string\":\"Hello world\"}");
 
             CHECK(j.dump() == j.dump(-1));
         }
@@ -220,13 +220,15 @@ TEST_CASE("object inspection")
 
         SECTION("indent=1, space='\t'")
         {
-            CHECK(j.dump(1, '\t') ==
+            CHECK(
+                j.dump(1, '\t') ==
                 "{\n\t\"array\": [\n\t\t1,\n\t\t2,\n\t\t3,\n\t\t4\n\t],\n\t\"boolean\": false,\n\t\"null\": null,\n\t\"number\": 42,\n\t\"object\": {},\n\t\"string\": \"Hello world\"\n}");
         }
 
         SECTION("indent=4")
         {
-            CHECK(j.dump(4) ==
+            CHECK(
+                j.dump(4) ==
                 "{\n    \"array\": [\n        1,\n        2,\n        3,\n        4\n    ],\n    \"boolean\": false,\n    \"null\": null,\n    \"number\": 42,\n    \"object\": {},\n    \"string\": \"Hello world\"\n}");
         }
 
@@ -241,7 +243,7 @@ TEST_CASE("object inspection")
             // inside the dump() function
             CHECK(j.dump(1024).size() == 15472);
 
-            const auto binary = json::binary({1, 2, 3}, 128);
+            const auto binary = json::binary({ 1, 2, 3 }, 128);
             CHECK(binary.dump(1024).size() == 2086);
         }
 
@@ -291,8 +293,7 @@ TEST_CASE("object inspection")
                 json const value = json::parse(f_unescaped);
                 std::string text = value.dump(4, ' ', true);
 
-                std::string expected((std::istreambuf_iterator<char>(f_escaped)),
+                std::string expected((std::istreambuf_iterator<char>(f_escaped)), std::istreambuf_iterator<char>());
-                                     std::istreambuf_iterator<char>());
                 CHECK(text == expected);
             }
         }
@@ -328,9 +329,7 @@ TEST_CASE("object inspection")
 
     SECTION("round trips")
     {
-        for (const auto& s :
+        for (const auto& s : { "3.141592653589793", "1000000000000000010E5" })
-                {"3.141592653589793", "1000000000000000010E5"
-                })
         {
             json const j1 = json::parse(s);
             std::string s1 = j1.dump();
@@ -350,13 +349,13 @@ TEST_CASE("object inspection")
 
         SECTION("object")
         {
-            json const j = {{"foo", "bar"}};
+            json const j = { { "foo", "bar" } };
             CHECK(j.type() == json::value_t::object);
         }
 
         SECTION("array")
         {
-            json const j = {1, 2, 3, 4};
+            json const j = { 1, 2, 3, 4 };
             CHECK(j.type() == json::value_t::array);
         }
 
@@ -402,14 +401,14 @@ TEST_CASE("object inspection")
 
         SECTION("object")
         {
-            json const j = {{"foo", "bar"}};
+            json const j = { { "foo", "bar" } };
             json::value_t t = j;
             CHECK(t == j.type());
         }
 
         SECTION("array")
         {
-            json const j = {1, 2, 3, 4};
+            json const j = { 1, 2, 3, 4 };
             json::value_t t = j;
             CHECK(t == j.type());
         }

tests/src/unit-items.cpp

@@ -14,7 +14,7 @@ using nlohmann::json;
 // This test suite uses range for loops where values are copied. This is inefficient in usual code, but required to achieve 100% coverage.
 DOCTEST_GCC_SUPPRESS_WARNING_PUSH
 #if DOCTEST_GCC >= DOCTEST_COMPILER(11, 0, 0)
-    DOCTEST_GCC_SUPPRESS_WARNING("-Wrange-loop-construct")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wrange-loop-construct")
 #endif
 DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
 DOCTEST_CLANG_SUPPRESS_WARNING("-Wrange-loop-construct")
@@ -25,7 +25,7 @@ TEST_CASE("iterator_wrapper")
     {
         SECTION("value")
         {
-            json j = { {"A", 1}, {"B", 2} };
+            json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (auto i : json::iterator_wrapper(j))  // NOLINT(performance-for-range-copy)
@@ -58,7 +58,7 @@ TEST_CASE("iterator_wrapper")
 
         SECTION("reference")
         {
-            json j = { {"A", 1}, {"B", 2} };
+            json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (auto& i : json::iterator_wrapper(j))  // NOLINT(readability-qualified-auto)
@@ -97,12 +97,12 @@ TEST_CASE("iterator_wrapper")
             CHECK(counter == 3);
 
             // check if values where changed
-            CHECK(j == json({ {"A", 11}, {"B", 22} }));
+            CHECK(j == json({ { "A", 11 }, { "B", 22 } }));
         }
 
         SECTION("const value")
         {
-            json j = { {"A", 1}, {"B", 2} };
+            json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (const auto i : json::iterator_wrapper(j))  // NOLINT(performance-for-range-copy)
@@ -135,7 +135,7 @@ TEST_CASE("iterator_wrapper")
 
         SECTION("const reference")
         {
-            json j = { {"A", 1}, {"B", 2} };
+            json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (const auto& i : json::iterator_wrapper(j))
@@ -171,7 +171,7 @@ TEST_CASE("iterator_wrapper")
     {
         SECTION("value")
         {
-            const json j = { {"A", 1}, {"B", 2} };
+            const json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (auto i : json::iterator_wrapper(j))  // NOLINT(performance-for-range-copy)
@@ -204,7 +204,7 @@ TEST_CASE("iterator_wrapper")
 
         SECTION("reference")
         {
-            const json j = { {"A", 1}, {"B", 2} };
+            const json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (auto& i : json::iterator_wrapper(j))  // NOLINT(readability-qualified-auto)
@@ -237,7 +237,7 @@ TEST_CASE("iterator_wrapper")
 
         SECTION("const value")
         {
-            const json j = { {"A", 1}, {"B", 2} };
+            const json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (const auto i : json::iterator_wrapper(j))  // NOLINT(performance-for-range-copy)
@@ -270,7 +270,7 @@ TEST_CASE("iterator_wrapper")
 
         SECTION("const reference")
         {
-            const json j = { {"A", 1}, {"B", 2} };
+            const json j = { { "A", 1 }, { "B", 2 } };
             int counter = 1;
 
             for (const auto& i : json::iterator_wrapper(j))
@@ -718,11 +718,7 @@ TEST_CASE("iterator_wrapper")
 
 TEST_CASE("items()")
 {
-    SECTION("object")
+    SECTION("object"){ SECTION("value"){ json j = { { "A", 1 }, { "B", 2 } };
-    {
-        SECTION("value")
-        {
-            json j = { {"A", 1}, {"B", 2} };
     int counter = 1;
 
     for (auto i : j.items())  // NOLINT(performance-for-range-copy)
@@ -751,11 +747,11 @@ TEST_CASE("items()")
     }
 
     CHECK(counter == 3);
-        }
+}
 
-        SECTION("reference")
+SECTION("reference")
-        {
+{
-            json j = { {"A", 1}, {"B", 2} };
+    json j = { { "A", 1 }, { "B", 2 } };
     int counter = 1;
 
     for (auto& i : j.items())  // NOLINT(readability-qualified-auto)
@@ -794,12 +790,12 @@ TEST_CASE("items()")
     CHECK(counter == 3);
 
     // check if values where changed
-            CHECK(j == json({ {"A", 11}, {"B", 22} }));
+    CHECK(j == json({ { "A", 11 }, { "B", 22 } }));
-        }
+}
 
-        SECTION("const value")
+SECTION("const value")
-        {
+{
-            json j = { {"A", 1}, {"B", 2} };
+    json j = { { "A", 1 }, { "B", 2 } };
     int counter = 1;
 
     for (const auto i : j.items())  // NOLINT(performance-for-range-copy)
@@ -828,11 +824,11 @@ TEST_CASE("items()")
     }
 
     CHECK(counter == 3);
-        }
+}
 
-        SECTION("const reference")
+SECTION("const reference")
-        {
+{
-            json j = { {"A", 1}, {"B", 2} };
+    json j = { { "A", 1 }, { "B", 2 } };
     int counter = 1;
 
     for (const auto& i : j.items())
@@ -861,30 +857,30 @@ TEST_CASE("items()")
     }
 
     CHECK(counter == 3);
-        }
+}
 
 #ifdef JSON_HAS_CPP_17
-        SECTION("structured bindings")
+SECTION("structured bindings")
-        {
+{
-            json j = { {"A", 1}, {"B", 2} };
+    json j = { { "A", 1 }, { "B", 2 } };
 
     std::map<std::string, int> m;
 
-            for (auto const&[key, value] : j.items())
+    for (auto const& [key, value] : j.items())
     {
         m.emplace(key, value);
     }
 
     CHECK(j.get<decltype(m)>() == m);
-        }
+}
 #endif
-    }
+}
 
-    SECTION("const object")
+SECTION("const object")
-    {
+{
     SECTION("value")
     {
-            const json j = { {"A", 1}, {"B", 2} };
+        const json j = { { "A", 1 }, { "B", 2 } };
         int counter = 1;
 
         for (auto i : j.items())  // NOLINT(performance-for-range-copy)
@@ -917,7 +913,7 @@ TEST_CASE("items()")
 
     SECTION("reference")
     {
-            const json j = { {"A", 1}, {"B", 2} };
+        const json j = { { "A", 1 }, { "B", 2 } };
         int counter = 1;
 
         for (auto& i : j.items())  // NOLINT(readability-qualified-auto)
@@ -950,7 +946,7 @@ TEST_CASE("items()")
 
     SECTION("const value")
     {
-            const json j = { {"A", 1}, {"B", 2} };
+        const json j = { { "A", 1 }, { "B", 2 } };
         int counter = 1;
 
         for (const auto i : j.items())  // NOLINT(performance-for-range-copy)
@@ -983,7 +979,7 @@ TEST_CASE("items()")
 
     SECTION("const reference")
     {
-            const json j = { {"A", 1}, {"B", 2} };
+        const json j = { { "A", 1 }, { "B", 2 } };
         int counter = 1;
 
         for (const auto& i : j.items())
@@ -1013,10 +1009,10 @@ TEST_CASE("items()")
 
         CHECK(counter == 3);
     }
-    }
+}
 
-    SECTION("array")
+SECTION("array")
-    {
+{
     SECTION("value")
     {
         json j = { "A", "B" };
@@ -1159,10 +1155,10 @@ TEST_CASE("items()")
 
         CHECK(counter == 3);
     }
-    }
+}
 
-    SECTION("const array")
+SECTION("const array")
-    {
+{
     SECTION("value")
     {
         const json j = { "A", "B" };
@@ -1294,10 +1290,10 @@ TEST_CASE("items()")
 
         CHECK(counter == 3);
     }
-    }
+}
 
-    SECTION("primitive")
+SECTION("primitive")
-    {
+{
     SECTION("value")
     {
         json j = 1;
@@ -1363,10 +1359,10 @@ TEST_CASE("items()")
 
         CHECK(counter == 2);
     }
-    }
+}
 
-    SECTION("const primitive")
+SECTION("const primitive")
-    {
+{
     SECTION("value")
     {
         const json j = 1;
@@ -1426,7 +1422,7 @@ TEST_CASE("items()")
 
         CHECK(counter == 2);
     }
-    }
+}
 }
 
 DOCTEST_GCC_SUPPRESS_WARNING_POP

tests/src/unit-iterators1.cpp

@@ -531,7 +531,7 @@ TEST_CASE("iterators 1")
 
         SECTION("array")
         {
-            json j = {1, 2, 3};
+            json j = { 1, 2, 3 };
             json j_const(j);
 
             SECTION("json + begin/end")
@@ -715,7 +715,7 @@ TEST_CASE("iterators 1")
 
         SECTION("object")
         {
-            json j = {{"A", 1}, {"B", 2}, {"C", 3}};
+            json j = { { "A", 1 }, { "B", 2 }, { "C", 3 } };
             json j_const(j);
 
             SECTION("json + begin/end")
@@ -1580,7 +1580,7 @@ TEST_CASE("iterators 1")
         }
         SECTION("array")
         {
-            json j = {1, 2, 3};
+            json j = { 1, 2, 3 };
             json::const_iterator it = j.begin();
             CHECK(it == j.cbegin());
             it = j.begin();
@@ -1588,7 +1588,7 @@ TEST_CASE("iterators 1")
         }
         SECTION("object")
         {
-            json j = {{"A", 1}, {"B", 2}, {"C", 3}};
+            json j = { { "A", 1 }, { "B", 2 }, { "C", 3 } };
             json::const_iterator it = j.begin();
             CHECK(it == j.cbegin());
             it = j.begin();

tests/src/unit-iterators2.cpp

@@ -27,7 +27,7 @@ TEST_CASE("iterators 2")
 {
     SECTION("iterator comparisons")
     {
-        json j_values = {nullptr, true, 42, 42u, 23.23, {{"one", 1}, {"two", 2}}, {1, 2, 3, 4, 5}, "Hello, world"};
+        json j_values = { nullptr, true, 42, 42u, 23.23, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3, 4, 5 }, "Hello, world" };
 
         for (json& j : j_values)
         {
@@ -59,14 +59,14 @@ TEST_CASE("iterators 2")
             // comparison: not equal
             {
                 // check definition
-                CHECK( (it1 != it1) == !(it1 == it1) );
+                CHECK((it1 != it1) == !(it1 == it1));
-                CHECK( (it1 != it2) == !(it1 == it2) );
+                CHECK((it1 != it2) == !(it1 == it2));
-                CHECK( (it1 != it3) == !(it1 == it3) );
+                CHECK((it1 != it3) == !(it1 == it3));
-                CHECK( (it2 != it3) == !(it2 == it3) );
+                CHECK((it2 != it3) == !(it2 == it3));
-                CHECK( (it1_c != it1_c) == !(it1_c == it1_c) );
+                CHECK((it1_c != it1_c) == !(it1_c == it1_c));
-                CHECK( (it1_c != it2_c) == !(it1_c == it2_c) );
+                CHECK((it1_c != it2_c) == !(it1_c == it2_c));
-                CHECK( (it1_c != it3_c) == !(it1_c == it3_c) );
+                CHECK((it1_c != it3_c) == !(it1_c == it3_c));
-                CHECK( (it2_c != it3_c) == !(it2_c == it3_c) );
+                CHECK((it2_c != it3_c) == !(it2_c == it3_c));
             }
 
             // comparison: smaller
@@ -74,23 +74,47 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it1,
-                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2,
-                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3,
-                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
@@ -111,36 +135,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it1,
-                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2,
-                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3,
-                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 <= it1) == !(it1 < it1) );
+                    CHECK((it1 <= it1) == !(it1 < it1));
-                    CHECK( (it1 <= it2) == !(it2 < it1) );
+                    CHECK((it1 <= it2) == !(it2 < it1));
-                    CHECK( (it1 <= it3) == !(it3 < it1) );
+                    CHECK((it1 <= it3) == !(it3 < it1));
-                    CHECK( (it2 <= it3) == !(it3 < it2) );
+                    CHECK((it2 <= it3) == !(it3 < it2));
-                    CHECK( (it1_c <= it1_c) == !(it1_c < it1_c) );
+                    CHECK((it1_c <= it1_c) == !(it1_c < it1_c));
-                    CHECK( (it1_c <= it2_c) == !(it2_c < it1_c) );
+                    CHECK((it1_c <= it2_c) == !(it2_c < it1_c));
-                    CHECK( (it1_c <= it3_c) == !(it3_c < it1_c) );
+                    CHECK((it1_c <= it3_c) == !(it3_c < it1_c));
-                    CHECK( (it2_c <= it3_c) == !(it3_c < it2_c) );
+                    CHECK((it2_c <= it3_c) == !(it3_c < it2_c));
                 }
             }
 
@@ -149,36 +197,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it1,
-                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2,
-                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3,
-                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 > it1) == (it1 < it1) );
+                    CHECK((it1 > it1) == (it1 < it1));
-                    CHECK( (it1 > it2) == (it2 < it1) );
+                    CHECK((it1 > it2) == (it2 < it1));
-                    CHECK( (it1 > it3) == (it3 < it1) );
+                    CHECK((it1 > it3) == (it3 < it1));
-                    CHECK( (it2 > it3) == (it3 < it2) );
+                    CHECK((it2 > it3) == (it3 < it2));
-                    CHECK( (it1_c > it1_c) == (it1_c < it1_c) );
+                    CHECK((it1_c > it1_c) == (it1_c < it1_c));
-                    CHECK( (it1_c > it2_c) == (it2_c < it1_c) );
+                    CHECK((it1_c > it2_c) == (it2_c < it1_c));
-                    CHECK( (it1_c > it3_c) == (it3_c < it1_c) );
+                    CHECK((it1_c > it3_c) == (it3_c < it1_c));
-                    CHECK( (it2_c > it3_c) == (it3_c < it2_c) );
+                    CHECK((it2_c > it3_c) == (it3_c < it2_c));
                 }
             }
 
@@ -187,36 +259,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it1,
-                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2,
-                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3,
-                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 >= it1) == !(it1 < it1) );
+                    CHECK((it1 >= it1) == !(it1 < it1));
-                    CHECK( (it1 >= it2) == !(it1 < it2) );
+                    CHECK((it1 >= it2) == !(it1 < it2));
-                    CHECK( (it1 >= it3) == !(it1 < it3) );
+                    CHECK((it1 >= it3) == !(it1 < it3));
-                    CHECK( (it2 >= it3) == !(it2 < it3) );
+                    CHECK((it2 >= it3) == !(it2 < it3));
-                    CHECK( (it1_c >= it1_c) == !(it1_c < it1_c) );
+                    CHECK((it1_c >= it1_c) == !(it1_c < it1_c));
-                    CHECK( (it1_c >= it2_c) == !(it1_c < it2_c) );
+                    CHECK((it1_c >= it2_c) == !(it1_c < it2_c));
-                    CHECK( (it1_c >= it3_c) == !(it1_c < it3_c) );
+                    CHECK((it1_c >= it3_c) == !(it1_c < it3_c));
-                    CHECK( (it2_c >= it3_c) == !(it2_c < it3_c) );
+                    CHECK((it2_c >= it3_c) == !(it2_c < it3_c));
                 }
             }
         }
@@ -231,10 +327,18 @@ TEST_CASE("iterators 2")
 #if JSON_DIAGNOSTICS
                     // the output differs in each loop, so we cannot fix a string for the expected exception
 #else
-                    CHECK_THROWS_WITH_AS(j.begin() == k.begin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.begin() == k.begin(),
-                    CHECK_THROWS_WITH_AS(j.cbegin() == k.cbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
-                    CHECK_THROWS_WITH_AS(j.begin() < k.begin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.cbegin() < k.cbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.cbegin() == k.cbegin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.begin() < k.begin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.cbegin() < k.cbegin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
 #endif
                 }
             }
@@ -243,8 +347,8 @@ TEST_CASE("iterators 2")
 
     SECTION("iterator arithmetic")
     {
-        json j_object = {{"one", 1}, {"two", 2}, {"three", 3}};
+        json j_object = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
-        json j_array = {1, 2, 3, 4, 5, 6};
+        json j_array = { 1, 2, 3, 4, 5, 6 };
         json j_null = nullptr;
         json j_value = 42;
 
@@ -451,7 +555,7 @@ TEST_CASE("iterators 2")
 
     SECTION("reverse iterator comparisons")
     {
-        json j_values = {nullptr, true, 42, 42u, 23.23, {{"one", 1}, {"two", 2}}, {1, 2, 3, 4, 5}, "Hello, world"};
+        json j_values = { nullptr, true, 42, 42u, 23.23, { { "one", 1 }, { "two", 2 } }, { 1, 2, 3, 4, 5 }, "Hello, world" };
 
         for (json& j : j_values)
         {
@@ -483,14 +587,14 @@ TEST_CASE("iterators 2")
             // comparison: not equal
             {
                 // check definition
-                CHECK( (it1 != it1) == !(it1 == it1) );
+                CHECK((it1 != it1) == !(it1 == it1));
-                CHECK( (it1 != it2) == !(it1 == it2) );
+                CHECK((it1 != it2) == !(it1 == it2));
-                CHECK( (it1 != it3) == !(it1 == it3) );
+                CHECK((it1 != it3) == !(it1 == it3));
-                CHECK( (it2 != it3) == !(it2 == it3) );
+                CHECK((it2 != it3) == !(it2 == it3));
-                CHECK( (it1_c != it1_c) == !(it1_c == it1_c) );
+                CHECK((it1_c != it1_c) == !(it1_c == it1_c));
-                CHECK( (it1_c != it2_c) == !(it1_c == it2_c) );
+                CHECK((it1_c != it2_c) == !(it1_c == it2_c));
-                CHECK( (it1_c != it3_c) == !(it1_c == it3_c) );
+                CHECK((it1_c != it3_c) == !(it1_c == it3_c));
-                CHECK( (it2_c != it3_c) == !(it2_c == it3_c) );
+                CHECK((it2_c != it3_c) == !(it2_c == it3_c));
             }
 
             // comparison: smaller
@@ -498,23 +602,47 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it1,
-                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2,
-                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3,
-                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
@@ -535,36 +663,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it1,
-                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2,
-                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3,
-                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 <= it1) == !(it1 < it1) );
+                    CHECK((it1 <= it1) == !(it1 < it1));
-                    CHECK( (it1 <= it2) == !(it2 < it1) );
+                    CHECK((it1 <= it2) == !(it2 < it1));
-                    CHECK( (it1 <= it3) == !(it3 < it1) );
+                    CHECK((it1 <= it3) == !(it3 < it1));
-                    CHECK( (it2 <= it3) == !(it3 < it2) );
+                    CHECK((it2 <= it3) == !(it3 < it2));
-                    CHECK( (it1_c <= it1_c) == !(it1_c < it1_c) );
+                    CHECK((it1_c <= it1_c) == !(it1_c < it1_c));
-                    CHECK( (it1_c <= it2_c) == !(it2_c < it1_c) );
+                    CHECK((it1_c <= it2_c) == !(it2_c < it1_c));
-                    CHECK( (it1_c <= it3_c) == !(it3_c < it1_c) );
+                    CHECK((it1_c <= it3_c) == !(it3_c < it1_c));
-                    CHECK( (it2_c <= it3_c) == !(it3_c < it2_c) );
+                    CHECK((it2_c <= it3_c) == !(it3_c < it2_c));
                 }
             }
 
@@ -573,36 +725,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it1,
-                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2,
-                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3,
-                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 > it1) == (it1 < it1) );
+                    CHECK((it1 > it1) == (it1 < it1));
-                    CHECK( (it1 > it2) == (it2 < it1) );
+                    CHECK((it1 > it2) == (it2 < it1));
-                    CHECK( (it1 > it3) == (it3 < it1) );
+                    CHECK((it1 > it3) == (it3 < it1));
-                    CHECK( (it2 > it3) == (it3 < it2) );
+                    CHECK((it2 > it3) == (it3 < it2));
-                    CHECK( (it1_c > it1_c) == (it1_c < it1_c) );
+                    CHECK((it1_c > it1_c) == (it1_c < it1_c));
-                    CHECK( (it1_c > it2_c) == (it2_c < it1_c) );
+                    CHECK((it1_c > it2_c) == (it2_c < it1_c));
-                    CHECK( (it1_c > it3_c) == (it3_c < it1_c) );
+                    CHECK((it1_c > it3_c) == (it3_c < it1_c));
-                    CHECK( (it2_c > it3_c) == (it3_c < it2_c) );
+                    CHECK((it2_c > it3_c) == (it3_c < it2_c));
                 }
             }
 
@@ -611,36 +787,60 @@ TEST_CASE("iterators 2")
                 if (j.type() == json::value_t::object)
                 {
 #if JSON_DIAGNOSTICS
-                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it1,
-                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2,
-                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3,
-                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #else
                     CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
                     CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c,
-                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
-                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c,
+                                         "[json.exception.invalid_iterator.213] cannot compare order of object iterators",
+                                         json::invalid_iterator&);
 #endif
                 }
                 else
                 {
                     // check definition
-                    CHECK( (it1 >= it1) == !(it1 < it1) );
+                    CHECK((it1 >= it1) == !(it1 < it1));
-                    CHECK( (it1 >= it2) == !(it1 < it2) );
+                    CHECK((it1 >= it2) == !(it1 < it2));
-                    CHECK( (it1 >= it3) == !(it1 < it3) );
+                    CHECK((it1 >= it3) == !(it1 < it3));
-                    CHECK( (it2 >= it3) == !(it2 < it3) );
+                    CHECK((it2 >= it3) == !(it2 < it3));
-                    CHECK( (it1_c >= it1_c) == !(it1_c < it1_c) );
+                    CHECK((it1_c >= it1_c) == !(it1_c < it1_c));
-                    CHECK( (it1_c >= it2_c) == !(it1_c < it2_c) );
+                    CHECK((it1_c >= it2_c) == !(it1_c < it2_c));
-                    CHECK( (it1_c >= it3_c) == !(it1_c < it3_c) );
+                    CHECK((it1_c >= it3_c) == !(it1_c < it3_c));
-                    CHECK( (it2_c >= it3_c) == !(it2_c < it3_c) );
+                    CHECK((it2_c >= it3_c) == !(it2_c < it3_c));
                 }
             }
         }
@@ -655,10 +855,18 @@ TEST_CASE("iterators 2")
 #if JSON_DIAGNOSTICS
                     // the output differs in each loop, so we cannot fix a string for the expected exception
 #else
-                    CHECK_THROWS_WITH_AS(j.rbegin() == k.rbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.rbegin() == k.rbegin(),
-                    CHECK_THROWS_WITH_AS(j.crbegin() == k.crbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
-                    CHECK_THROWS_WITH_AS(j.rbegin() < k.rbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                                         json::invalid_iterator&);
-                    CHECK_THROWS_WITH_AS(j.crbegin() < k.crbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.crbegin() == k.crbegin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.rbegin() < k.rbegin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.crbegin() < k.crbegin(),
+                                         "[json.exception.invalid_iterator.212] cannot compare iterators of different containers",
+                                         json::invalid_iterator&);
 #endif
                 }
             }
@@ -667,8 +875,8 @@ TEST_CASE("iterators 2")
 
     SECTION("reverse iterator arithmetic")
     {
-        json j_object = {{"one", 1}, {"two", 2}, {"three", 3}};
+        json j_object = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
-        json j_array = {1, 2, 3, 4, 5, 6};
+        json j_array = { 1, 2, 3, 4, 5, 6 };
         json j_null = nullptr;
         json j_value = 42;
 
@@ -894,12 +1102,12 @@ TEST_CASE("iterators 2")
         }
 
         // libstdc++ algorithms don't work with Clang 15 (04/2022)
-#if !DOCTEST_CLANG || (DOCTEST_CLANG && defined(__GLIBCXX__))
+    #if !DOCTEST_CLANG || (DOCTEST_CLANG && defined(__GLIBCXX__))
         SECTION("algorithms")
         {
             SECTION("copy")
             {
-                json j{"foo", "bar"};
+                json j{ "foo", "bar" };
                 auto j_copied = json::array();
 
                 std::ranges::copy(j, std::back_inserter(j_copied));
@@ -909,37 +1117,35 @@ TEST_CASE("iterators 2")
 
             SECTION("find_if")
             {
-                json j{1, 3, 2, 4};
+                json j{ 1, 3, 2, 4 };
                 auto j_even = json::array();
 
-#if JSON_USE_IMPLICIT_CONVERSIONS
+        #if JSON_USE_IMPLICIT_CONVERSIONS
-                auto it = std::ranges::find_if(j, [](int v) noexcept
+                auto it = std::ranges::find_if(j, [](int v) noexcept {
-                {
                     return (v % 2) == 0;
                 });
-#else
+        #else
-                auto it = std::ranges::find_if(j, [](const json & j) noexcept
+                auto it = std::ranges::find_if(j, [](const json& j) noexcept {
-                {
                     int v;
                     j.get_to(v);
                     return (v % 2) == 0;
                 });
-#endif
+        #endif
 
                 CHECK(*it == 2);
             }
         }
-#endif
+    #endif
 
         // libstdc++ views don't work with Clang 15 (04/2022)
         // libc++ hides limited ranges implementation behind guard macro
-#if !(DOCTEST_CLANG && (defined(__GLIBCXX__) || defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)))
+    #if !(DOCTEST_CLANG && (defined(__GLIBCXX__) || defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)))
         SECTION("views")
         {
             SECTION("reverse")
             {
-                json j{1, 2, 3, 4, 5};
+                json j{ 1, 2, 3, 4, 5 };
-                json j_expected{5, 4, 3, 2, 1};
+                json j_expected{ 5, 4, 3, 2, 1 };
 
                 auto reversed = j | std::views::reverse;
                 CHECK(std::ranges::equal(reversed, j_expected));
@@ -947,16 +1153,14 @@ TEST_CASE("iterators 2")
 
             SECTION("transform")
             {
-                json j
+                json j{
-                {
+                    { "a_key", "a_value" },
-                    { "a_key", "a_value"},
+                    { "b_key", "b_value" },
-                    { "b_key", "b_value"},
+                    { "c_key", "c_value" },
-                    { "c_key", "c_value"},
                 };
-                json j_expected{"a_key", "b_key", "c_key"};
+                json j_expected{ "a_key", "b_key", "c_key" };
 
-                auto transformed = j.items() | std::views::transform([](const auto & item)
+                auto transformed = j.items() | std::views::transform([](const auto& item) {
-                {
                                        return item.key();
                                    });
                 auto j_transformed = json::array();
@@ -965,7 +1169,7 @@ TEST_CASE("iterators 2")
                 CHECK(j_transformed == j_expected);
             }
         }
-#endif
+    #endif
     }
 #endif
 }

tests/src/unit-json_patch.cpp

@@ -11,11 +11,11 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 #ifdef JSON_TEST_NO_GLOBAL_UDLS
-    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+using namespace nlohmann::literals;  // NOLINT(google-build-using-namespace)
 #endif
 
-#include <fstream>
 #include "make_test_data_available.hpp"
+#include <fstream>
 
 TEST_CASE("JSON patch")
 {
@@ -77,9 +77,9 @@ TEST_CASE("JSON patch")
         {
             // If removing an element from an array, any elements above the
             // specified index are shifted one position to the left.
-            json const doc = {1, 2, 3, 4};
+            json const doc = { 1, 2, 3, 4 };
-            json const patch = {{{"op", "remove"}, {"path", "/1"}}};
+            json const patch = { { { "op", "remove" }, { "path", "/1" } } };
-            CHECK(doc.patch(patch) == json({1, 3, 4}));
+            CHECK(doc.patch(patch) == json({ 1, 3, 4 }));
         }
 
         SECTION("A.1. Adding an Object Member")
@@ -529,7 +529,7 @@ TEST_CASE("JSON patch")
                     )"_json;
 
                 // The resulting JSON document:
-                json expected = {1, 2, 3};
+                json expected = { 1, 2, 3 };
 
                 // check if patched value is as expected
                 CHECK(doc.patch(patch) == expected);
@@ -545,7 +545,7 @@ TEST_CASE("JSON patch")
                 // exactly the number of elements in the array which is legal.
 
                 // An example target JSON document:
-                json const doc = {0, 1, 2};
+                json const doc = { 0, 1, 2 };
 
                 // A JSON Patch document:
                 json const patch = R"(
@@ -555,7 +555,7 @@ TEST_CASE("JSON patch")
                 )"_json;
 
                 // The resulting JSON document:
-                json expected = {0, 1, 2, 3};
+                json expected = { 0, 1, 2, 3 };
 
                 // check if patched value is as expected
                 CHECK(doc.patch(patch) == expected);
@@ -611,7 +611,7 @@ TEST_CASE("JSON patch")
         SECTION("replace")
         {
             json const j = "string";
-            json const patch = {{{"op", "replace"}, {"path", ""}, {"value", 1}}};
+            json const patch = { { { "op", "replace" }, { "path", "" }, { "value", 1 } } };
             CHECK(j.patch(patch) == json(1));
         }
 
@@ -640,13 +640,13 @@ TEST_CASE("JSON patch")
             }
             {
                 // a JSON value
-                json j = {"good", "bad", "ugly"};
+                json j = { "good", "bad", "ugly" };
 
                 // a JSON pointer
                 auto ptr = json::json_pointer("/2");
 
                 // use to access elements
-                j[ptr] = {{"it", "cattivo"}};
+                j[ptr] = { { "it", "cattivo" } };
                 CHECK(j == R"(["good","bad",{"it":"cattivo"}])"_json);
 
                 // use user-defined string literal
@@ -666,25 +666,31 @@ TEST_CASE("JSON patch")
             SECTION("not an array")
             {
                 json const j;
-                json const patch = {{"op", "add"}, {"path", ""}, {"value", 1}};
+                json const patch = { { "op", "add" }, { "path", "" }, { "value", 1 } };
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects",
+                                     json::parse_error&);
             }
 
             SECTION("not an array of objects")
             {
                 json const j;
-                json const patch = {"op", "add", "path", "", "value", 1};
+                json const patch = { "op", "add", "path", "", "value", 1 };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: (/0) JSON patch must be an array of objects", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.104] parse error: (/0) JSON patch must be an array of objects",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'op'")
             {
                 json const j;
-                json const patch = {{{"foo", "bar"}}};
+                json const patch = { { { "foo", "bar" } } };
 #if JSON_DIAGNOSTICS
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation must have member 'op'", json::parse_error&);
 #else
@@ -695,18 +701,22 @@ TEST_CASE("JSON patch")
             SECTION("non-string 'op'")
             {
                 json const j;
-                json const patch = {{{"op", 1}}};
+                json const patch = { { { "op", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation must have string member 'op'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation must have string member 'op'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation must have string member 'op'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation must have string member 'op'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("invalid operation")
             {
                 json const j;
-                json const patch = {{{"op", "foo"}, {"path", ""}}};
+                json const patch = { { { "op", "foo" }, { "path", "" } } };
 #if JSON_DIAGNOSTICS
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation value 'foo' is invalid", json::parse_error&);
 #else
@@ -720,40 +730,52 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "add"}}};
+                json const patch = { { { "op", "add" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'add' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "add"}, {"path", 1}}};
+                json const patch = { { { "op", "add" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'add' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'value'")
             {
                 json const j;
-                json const patch = {{{"op", "add"}, {"path", ""}}};
+                json const patch = { { { "op", "add" }, { "path", "" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'value'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'add' must have member 'value'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("invalid array index")
             {
-                json const j = {1, 2};
+                json const j = { 1, 2 };
-                json const patch = {{{"op", "add"}, {"path", "/4"}, {"value", 4}}};
+                json const patch = { { { "op", "add" }, { "path", "/4" }, { "value", 4 } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 4 is out of range", json::out_of_range&);
             }
         }
@@ -763,43 +785,51 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "remove"}}};
+                json const patch = { { { "op", "remove" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'remove' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'remove' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "remove"}, {"path", 1}}};
+                json const patch = { { { "op", "remove" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'remove' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'remove' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("nonexisting target location (array)")
             {
-                json const j = {1, 2, 3};
+                json const j = { 1, 2, 3 };
-                json const patch = {{{"op", "remove"}, {"path", "/17"}}};
+                json const patch = { { { "op", "remove" }, { "path", "/17" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 17 is out of range", json::out_of_range&);
             }
 
             SECTION("nonexisting target location (object)")
             {
-                json const j = {{"foo", 1}, {"bar", 2}};
+                json const j = { { "foo", 1 }, { "bar", 2 } };
-                json const patch = {{{"op", "remove"}, {"path", "/baz"}}};
+                json const patch = { { { "op", "remove" }, { "path", "/baz" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
             }
 
             SECTION("root element as target location")
             {
                 json const j = "string";
-                json const patch = {{{"op", "remove"}, {"path", ""}}};
+                json const patch = { { { "op", "remove" }, { "path", "" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
             }
         }
@@ -809,47 +839,59 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "replace"}}};
+                json const patch = { { { "op", "replace" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "replace"}, {"path", 1}}};
+                json const patch = { { { "op", "replace" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'replace' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'value'")
             {
                 json const j;
-                json const patch = {{{"op", "replace"}, {"path", ""}}};
+                json const patch = { { { "op", "replace" }, { "path", "" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'value'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'value'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("nonexisting target location (array)")
             {
-                json const j = {1, 2, 3};
+                json const j = { 1, 2, 3 };
-                json const patch = {{{"op", "replace"}, {"path", "/17"}, {"value", 19}}};
+                json const patch = { { { "op", "replace" }, { "path", "/17" }, { "value", 19 } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 17 is out of range", json::out_of_range&);
             }
 
             SECTION("nonexisting target location (object)")
             {
-                json const j = {{"foo", 1}, {"bar", 2}};
+                json const j = { { "foo", 1 }, { "bar", 2 } };
-                json const patch = {{{"op", "replace"}, {"path", "/baz"}, {"value", 3}}};
+                json const patch = { { { "op", "replace" }, { "path", "/baz" }, { "value", 3 } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
             }
         }
@@ -859,60 +901,76 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "move"}}};
+                json const patch = { { { "op", "move" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'move' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "move"}, {"path", 1}}};
+                json const patch = { { { "op", "move" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'from'")
             {
                 json const j;
-                json const patch = {{{"op", "move"}, {"path", ""}}};
+                json const patch = { { { "op", "move" }, { "path", "" } } };
                 CHECK_THROWS_AS(j.patch(patch), json::parse_error&);
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'from'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'move' must have member 'from'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'from'")
             {
                 json const j;
-                json const patch = {{{"op", "move"}, {"path", ""}, {"from", 1}}};
+                json const patch = { { { "op", "move" }, { "path", "" }, { "from", 1 } } };
                 CHECK_THROWS_AS(j.patch(patch), json::parse_error&);
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'from'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'from'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("nonexisting from location (array)")
             {
-                json const j = {1, 2, 3};
+                json const j = { 1, 2, 3 };
-                json const patch = {{{"op", "move"}, {"path", "/0"}, {"from", "/5"}}};
+                json const patch = { { { "op", "move" }, { "path", "/0" }, { "from", "/5" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
             }
 
             SECTION("nonexisting from location (object)")
             {
-                json const j = {{"foo", 1}, {"bar", 2}};
+                json const j = { { "foo", 1 }, { "bar", 2 } };
-                json const patch = {{{"op", "move"}, {"path", "/baz"}, {"from", "/baz"}}};
+                json const patch = { { { "op", "move" }, { "path", "/baz" }, { "from", "/baz" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
             }
         }
@@ -922,58 +980,74 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "copy"}}};
+                json const patch = { { { "op", "copy" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "copy"}, {"path", 1}}};
+                json const patch = { { { "op", "copy" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'from'")
             {
                 json const j;
-                json const patch = {{{"op", "copy"}, {"path", ""}}};
+                json const patch = { { { "op", "copy" }, { "path", "" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'from'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'from'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'from'")
             {
                 json const j;
-                json const patch = {{{"op", "copy"}, {"path", ""}, {"from", 1}}};
+                json const patch = { { { "op", "copy" }, { "path", "" }, { "from", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'from'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'from'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'from'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("nonexisting from location (array)")
             {
-                json const j = {1, 2, 3};
+                json const j = { 1, 2, 3 };
-                json const patch = {{{"op", "copy"}, {"path", "/0"}, {"from", "/5"}}};
+                json const patch = { { { "op", "copy" }, { "path", "/0" }, { "from", "/5" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
             }
 
             SECTION("nonexisting from location (object)")
             {
-                json const j = {{"foo", 1}, {"bar", 2}};
+                json const j = { { "foo", 1 }, { "bar", 2 } };
-                json const patch = {{{"op", "copy"}, {"path", "/fob"}, {"from", "/baz"}}};
+                json const patch = { { { "op", "copy" }, { "path", "/fob" }, { "from", "/baz" } } };
                 CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
             }
         }
@@ -983,33 +1057,45 @@ TEST_CASE("JSON patch")
             SECTION("missing 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "test"}}};
+                json const patch = { { { "op", "test" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'test' must have member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("non-string 'path'")
             {
                 json const j;
-                json const patch = {{{"op", "test"}, {"path", 1}}};
+                json const patch = { { { "op", "test" }, { "path", 1 } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have string member 'path'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have string member 'path'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'test' must have string member 'path'",
+                                     json::parse_error&);
 #endif
             }
 
             SECTION("missing 'value'")
             {
                 json const j;
-                json const patch = {{{"op", "test"}, {"path", ""}}};
+                json const patch = { { { "op", "test" }, { "path", "" } } };
 #if JSON_DIAGNOSTICS
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'value'",
+                                     json::parse_error&);
 #else
-                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have member 'value'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(j.patch(patch),
+                                     "[json.exception.parse_error.105] parse error: operation 'test' must have member 'value'",
+                                     json::parse_error&);
 #endif
             }
         }
@@ -1216,77 +1302,52 @@ TEST_CASE("JSON patch")
     {
         SECTION("add")
         {
-            CHECK(R"( {} )"_json.patch(
+            CHECK(R"( {} )"_json.patch(R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json) == R"( {"foo": "bar"} )"_json);
-                      R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json
-                  ) == R"( {"foo": "bar"} )"_json);
 
-            CHECK(R"( {"foo": [1, 3]} )"_json.patch(
+            CHECK(R"( {"foo": [1, 3]} )"_json.patch(R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json) == R"( {"foo": "bar"} )"_json);
-                      R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json
-                  ) == R"( {"foo": "bar"} )"_json);
 
-            CHECK(R"( {"foo": [{}]} )"_json.patch(
+            CHECK(R"( {"foo": [{}]} )"_json.patch(R"( [{"op": "add", "path": "/foo/0/bar", "value": "baz"}] )"_json) == R"( {"foo": [{"bar": "baz"}]} )"_json);
-                      R"( [{"op": "add", "path": "/foo/0/bar", "value": "baz"}] )"_json
-                  ) == R"( {"foo": [{"bar": "baz"}]} )"_json);
         }
 
         SECTION("remove")
         {
-            CHECK(R"( {"foo": "bar"} )"_json.patch(
+            CHECK(R"( {"foo": "bar"} )"_json.patch(R"( [{"op": "remove", "path": "/foo"}] )"_json) == R"( {} )"_json);
-                      R"( [{"op": "remove", "path": "/foo"}] )"_json
-                  ) == R"( {} )"_json);
 
-            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(R"( [{"op": "remove", "path": "/foo/1"}] )"_json) == R"( {"foo": [1, 3]} )"_json);
-                      R"( [{"op": "remove", "path": "/foo/1"}] )"_json
-                  ) == R"( {"foo": [1, 3]} )"_json);
 
-            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(
+            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(R"( [{"op": "remove", "path": "/foo/0/bar"}] )"_json) == R"( {"foo": [{}]} )"_json);
-                      R"( [{"op": "remove", "path": "/foo/0/bar"}] )"_json
-                  ) == R"( {"foo": [{}]} )"_json);
         }
 
         SECTION("replace")
         {
-            CHECK(R"( {"foo": "bar"} )"_json.patch(
+            CHECK(R"( {"foo": "bar"} )"_json.patch(R"( [{"op": "replace", "path": "/foo", "value": 1}] )"_json) == R"( {"foo": 1} )"_json);
-                      R"( [{"op": "replace", "path": "/foo", "value": 1}] )"_json
-                  ) == R"( {"foo": 1} )"_json);
 
-            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(R"( [{"op": "replace", "path": "/foo/1", "value": 4}] )"_json) == R"( {"foo": [1, 4, 3]} )"_json);
-                      R"( [{"op": "replace", "path": "/foo/1", "value": 4}] )"_json
-                  ) == R"( {"foo": [1, 4, 3]} )"_json);
 
-            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(
+            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(R"( [{"op": "replace", "path": "/foo/0/bar", "value": 1}] )"_json) ==
-                      R"( [{"op": "replace", "path": "/foo/0/bar", "value": 1}] )"_json
+                  R"( {"foo": [{"bar": 1}]} )"_json);
-                  ) == R"( {"foo": [{"bar": 1}]} )"_json);
         }
 
         SECTION("move")
         {
-            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(R"( [{"op": "move", "from": "/foo", "path": "/bar"}] )"_json) == R"( {"bar": [1, 2, 3]} )"_json);
-                      R"( [{"op": "move", "from": "/foo", "path": "/bar"}] )"_json
-                  ) == R"( {"bar": [1, 2, 3]} )"_json);
         }
 
         SECTION("copy")
         {
-            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(R"( [{"op": "copy", "from": "/foo/1", "path": "/bar"}] )"_json) ==
-                      R"( [{"op": "copy", "from": "/foo/1", "path": "/bar"}] )"_json
+                  R"( {"foo": [1, 2, 3], "bar": 2} )"_json);
-                  ) == R"( {"foo": [1, 2, 3], "bar": 2} )"_json);
         }
 
         SECTION("copy")
         {
-            CHECK_NOTHROW(R"( {"foo": "bar"} )"_json.patch(
+            CHECK_NOTHROW(R"( {"foo": "bar"} )"_json.patch(R"( [{"op": "test", "path": "/foo", "value": "bar"}] )"_json));
-                              R"( [{"op": "test", "path": "/foo", "value": "bar"}] )"_json));
         }
     }
 
     SECTION("Tests from github.com/json-patch/json-patch-tests")
     {
-        for (const auto* filename :
+        for (const auto* filename : { TEST_DATA_DIRECTORY "/json-patch-tests/spec_tests.json", TEST_DATA_DIRECTORY "/json-patch-tests/tests.json" })
-                {
-                    TEST_DATA_DIRECTORY "/json-patch-tests/spec_tests.json",
-                    TEST_DATA_DIRECTORY "/json-patch-tests/tests.json"
-                })
         {
             CAPTURE(filename)
             std::ifstream f(filename);

tests/src/unit-json_pointer.cpp

@@ -12,7 +12,7 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 #ifdef JSON_TEST_NO_GLOBAL_UDLS
-    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+using namespace nlohmann::literals;  // NOLINT(google-build-using-namespace)
 #endif
 
 #include <map>
@@ -23,26 +23,26 @@ TEST_CASE("JSON pointers")
     SECTION("errors")
     {
         CHECK_THROWS_WITH_AS(json::json_pointer("foo"),
-                             "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+                             "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'",
+                             json::parse_error&);
 
         CHECK_THROWS_WITH_AS(json::json_pointer("/~~"),
-                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'",
+                             json::parse_error&);
 
         CHECK_THROWS_WITH_AS(json::json_pointer("/~"),
-                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'",
+                             json::parse_error&);
 
         json::json_pointer p;
-        CHECK_THROWS_WITH_AS(p.top(),
+        CHECK_THROWS_WITH_AS(p.top(), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
-                             "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
+        CHECK_THROWS_WITH_AS(p.pop_back(), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
-        CHECK_THROWS_WITH_AS(p.pop_back(),
-                             "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
 
         SECTION("array index error")
         {
-            json v = {1, 2, 3, 4};
+            json v = { 1, 2, 3, 4 };
             json::json_pointer const ptr("/10e");
-            CHECK_THROWS_WITH_AS(v[ptr],
+            CHECK_THROWS_WITH_AS(v[ptr], "[json.exception.out_of_range.404] unresolved reference token '10e'", json::out_of_range&);
-                                 "[json.exception.out_of_range.404] unresolved reference token '10e'", json::out_of_range&);
         }
     }
 
@@ -131,22 +131,22 @@ TEST_CASE("JSON pointers")
 
             CHECK(!j.contains(json::json_pointer("/a/c/1")));
             CHECK_NOTHROW(j[json::json_pointer("/a/c/1")] = 42);
-            CHECK(j["a"]["c"] == json({nullptr, 42}));
+            CHECK(j["a"]["c"] == json({ nullptr, 42 }));
             CHECK(j.contains(json::json_pointer("/a/c/1")));
 
             CHECK(!j.contains(json::json_pointer("/a/d/-")));
             CHECK_NOTHROW(j[json::json_pointer("/a/d/-")] = 42);
             CHECK(!j.contains(json::json_pointer("/a/d/-")));
-            CHECK(j["a"]["d"] == json::array({42}));
+            CHECK(j["a"]["d"] == json::array({ 42 }));
             // "/a/b" works for JSON {"a": {"b": 42}}
-            CHECK(json({{"a", {{"b", 42}}}})[json::json_pointer("/a/b")] == json(42));
+            CHECK(json({ { "a", { { "b", 42 } } } })[json::json_pointer("/a/b")] == json(42));
 
             // unresolved access
             json j_primitive = 1;
-            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer],
+            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer], "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
-                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
             CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer),
-                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'",
+                                 json::out_of_range&);
             CHECK(!j_primitive.contains(json::json_pointer("/foo")));
         }
 
@@ -205,15 +205,14 @@ TEST_CASE("JSON pointers")
             CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]);
 
             // unescaped access
-            CHECK_THROWS_WITH_AS(j.at(json::json_pointer("/a/b")),
+            CHECK_THROWS_WITH_AS(j.at(json::json_pointer("/a/b")), "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
-                                 "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
 
             // unresolved access
             const json j_primitive = 1;
-            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer],
+            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer], "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
-                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
             CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer),
-                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'",
+                                 json::out_of_range&);
         }
 
         SECTION("user-defined string literal")
@@ -252,7 +251,7 @@ TEST_CASE("JSON pointers")
     {
         SECTION("nonconst access")
         {
-            json j = {1, 2, 3};
+            json j = { 1, 2, 3 };
             const json j_const = j;
 
             // check reading access
@@ -270,17 +269,21 @@ TEST_CASE("JSON pointers")
 
             // assign to nonexisting index (with gap)
             j["/5"_json_pointer] = 55;
-            CHECK(j == json({1, 13, 3, 33, nullptr, 55}));
+            CHECK(j == json({ 1, 13, 3, 33, nullptr, 55 }));
 
             // error with leading 0
             CHECK_THROWS_WITH_AS(j["/01"_json_pointer],
-                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const["/01"_json_pointer],
-                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j.at("/01"_json_pointer),
-                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const.at("/01"_json_pointer),
-                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'",
+                                 json::parse_error&);
 
             CHECK(!j.contains("/01"_json_pointer));
             CHECK(!j.contains("/01"_json_pointer));
@@ -289,24 +292,28 @@ TEST_CASE("JSON pointers")
 
             // error with incorrect numbers
             CHECK_THROWS_WITH_AS(j["/one"_json_pointer] = 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const["/one"_json_pointer] == 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
 
             CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
 
             CHECK_THROWS_WITH_AS(j["/+1"_json_pointer] = 1,
-                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const["/+1"_json_pointer] == 1,
-                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number",
+                                 json::parse_error&);
 
-            CHECK_THROWS_WITH_AS(j["/1+1"_json_pointer] = 1,
+            CHECK_THROWS_WITH_AS(j["/1+1"_json_pointer] = 1, "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
-                                 "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_const["/1+1"_json_pointer] == 1, "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
-            CHECK_THROWS_WITH_AS(j_const["/1+1"_json_pointer] == 1,
-                                 "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
 
             {
                 auto too_large_index = std::to_string((std::numeric_limits<unsigned long long>::max)()) + "1";
@@ -335,38 +342,38 @@ TEST_CASE("JSON pointers")
             DOCTEST_MSVC_SUPPRESS_WARNING_POP
 
             CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1,
-                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number",
+                                 json::parse_error&);
 
             CHECK(!j.contains("/one"_json_pointer));
             CHECK(!j.contains("/one"_json_pointer));
             CHECK(!j_const.contains("/one"_json_pointer));
             CHECK(!j_const.contains("/one"_json_pointer));
 
-            CHECK_THROWS_WITH_AS(json({{"/list/0", 1}, {"/list/1", 2}, {"/list/three", 3}}).unflatten(),
+            CHECK_THROWS_WITH_AS(json({ { "/list/0", 1 }, { "/list/1", 2 }, { "/list/three", 3 } }).unflatten(),
-            "[json.exception.parse_error.109] parse error: array index 'three' is not a number", json::parse_error&);
+                                 "[json.exception.parse_error.109] parse error: array index 'three' is not a number",
+                                 json::parse_error&);
 
             // assign to "-"
             j["/-"_json_pointer] = 99;
-            CHECK(j == json({1, 13, 3, 33, nullptr, 55, 99}));
+            CHECK(j == json({ 1, 13, 3, 33, nullptr, 55, 99 }));
 
             // error when using "-" in const object
-            CHECK_THROWS_WITH_AS(j_const["/-"_json_pointer],
+            CHECK_THROWS_WITH_AS(j_const["/-"_json_pointer], "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
-                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
             CHECK(!j_const.contains("/-"_json_pointer));
 
             // error when using "-" with at
-            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer),
+            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (7) is out of range", json::out_of_range&);
-                                 "[json.exception.out_of_range.402] array index '-' (7) is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_const.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
-            CHECK_THROWS_WITH_AS(j_const.at("/-"_json_pointer),
-                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
             CHECK(!j_const.contains("/-"_json_pointer));
         }
 
         SECTION("const access")
         {
-            const json j = {1, 2, 3};
+            const json j = { 1, 2, 3 };
 
             // check reading access
             CHECK(j["/0"_json_pointer] == j[0]);
@@ -374,67 +381,45 @@ TEST_CASE("JSON pointers")
             CHECK(j["/2"_json_pointer] == j[2]);
 
             // assign to nonexisting index
-            CHECK_THROWS_WITH_AS(j.at("/3"_json_pointer),
+            CHECK_THROWS_WITH_AS(j.at("/3"_json_pointer), "[json.exception.out_of_range.401] array index 3 is out of range", json::out_of_range&);
-                                 "[json.exception.out_of_range.401] array index 3 is out of range", json::out_of_range&);
             CHECK(!j.contains("/3"_json_pointer));
 
             // assign to nonexisting index (with gap)
-            CHECK_THROWS_WITH_AS(j.at("/5"_json_pointer),
+            CHECK_THROWS_WITH_AS(j.at("/5"_json_pointer), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
-                                 "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
             CHECK(!j.contains("/5"_json_pointer));
 
             // assign to "-"
-            CHECK_THROWS_WITH_AS(j["/-"_json_pointer],
+            CHECK_THROWS_WITH_AS(j["/-"_json_pointer], "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
-                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
-            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer),
-                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
             CHECK(!j.contains("/-"_json_pointer));
         }
     }
 
     SECTION("flatten")
     {
-        json j =
+        json j = { { "pi", 3.141 },
-        {
+                   { "happy", true },
-            {"pi", 3.141},
+                   { "name", "Niels" },
-            {"happy", true},
+                   { "nothing", nullptr },
-            {"name", "Niels"},
+                   { "answer", { { "everything", 42 } } },
-            {"nothing", nullptr},
+                   { "list", { 1, 0, 2 } },
-            {
+                   { "object",
-                "answer", {
+                     { { "currency", "USD" }, { "value", 42.99 }, { "", "empty string" }, { "/", "slash" }, { "~", "tilde" }, { "~1", "tilde1" } } } };
-                    {"everything", 42}
-                }
-            },
-            {"list", {1, 0, 2}},
-            {
-                "object", {
-                    {"currency", "USD"},
-                    {"value", 42.99},
-                    {"", "empty string"},
-                    {"/", "slash"},
-                    {"~", "tilde"},
-                    {"~1", "tilde1"}
-                }
-            }
-        };
 
-        json j_flatten =
+        json j_flatten = { { "/pi", 3.141 },
-        {
+                           { "/happy", true },
-            {"/pi", 3.141},
+                           { "/name", "Niels" },
-            {"/happy", true},
+                           { "/nothing", nullptr },
-            {"/name", "Niels"},
+                           { "/answer/everything", 42 },
-            {"/nothing", nullptr},
+                           { "/list/0", 1 },
-            {"/answer/everything", 42},
+                           { "/list/1", 0 },
-            {"/list/0", 1},
+                           { "/list/2", 2 },
-            {"/list/1", 0},
+                           { "/object/currency", "USD" },
-            {"/list/2", 2},
+                           { "/object/value", 42.99 },
-            {"/object/currency", "USD"},
+                           { "/object/", "empty string" },
-            {"/object/value", 42.99},
+                           { "/object/~1", "slash" },
-            {"/object/", "empty string"},
+                           { "/object/~0", "tilde" },
-            {"/object/~1", "slash"},
+                           { "/object/~01", "tilde1" } };
-            {"/object/~0", "tilde"},
-            {"/object/~01", "tilde1"}
-        };
 
         // check if flattened result is as expected
         CHECK(j.flatten() == j_flatten);
@@ -443,20 +428,22 @@ TEST_CASE("JSON pointers")
         CHECK(j_flatten.unflatten() == j);
 
         // error for nonobjects
-        CHECK_THROWS_WITH_AS(json(1).unflatten(),
+        CHECK_THROWS_WITH_AS(json(1).unflatten(), "[json.exception.type_error.314] only objects can be unflattened", json::type_error&);
-                             "[json.exception.type_error.314] only objects can be unflattened", json::type_error&);
 
         // error for nonprimitve values
 #if JSON_DIAGNOSTICS
-        CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] (/~11) values in object must be primitive", json::type_error&);
+        CHECK_THROWS_WITH_AS(json({ { "/1", { 1, 2, 3 } } }).unflatten(),
+                             "[json.exception.type_error.315] (/~11) values in object must be primitive",
+                             json::type_error&);
 #else
-        CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] values in object must be primitive", json::type_error&);
+        CHECK_THROWS_WITH_AS(json({ { "/1", { 1, 2, 3 } } }).unflatten(),
+                             "[json.exception.type_error.315] values in object must be primitive",
+                             json::type_error&);
 #endif
 
         // error for conflicting values
-        json const j_error = {{"", 42}, {"/foo", 17}};
+        json const j_error = { { "", 42 }, { "/foo", 17 } };
-        CHECK_THROWS_WITH_AS(j_error.unflatten(),
+        CHECK_THROWS_WITH_AS(j_error.unflatten(), "[json.exception.type_error.313] invalid value to unflatten", json::type_error&);
-                             "[json.exception.type_error.313] invalid value to unflatten", json::type_error&);
 
         // explicit roundtrip check
         CHECK(j.flatten().unflatten() == j);
@@ -480,9 +467,7 @@ TEST_CASE("JSON pointers")
 
     SECTION("string representation")
     {
-        for (const auto* ptr_str :
+        for (const auto* ptr_str : { "", "/foo", "/foo/0", "/", "/a~1b", "/c%d", "/e^f", "/g|h", "/i\\j", "/k\"l", "/ ", "/m~0n" })
-                {"", "/foo", "/foo/0", "/", "/a~1b", "/c%d", "/e^f", "/g|h", "/i\\j", "/k\"l", "/ ", "/m~0n"
-                })
         {
             json::json_pointer const ptr(ptr_str);
             std::stringstream ss;
@@ -514,30 +499,15 @@ TEST_CASE("JSON pointers")
 
     SECTION("empty, push, pop and parent")
     {
-        const json j =
+        const json j = { { "", "Hello" },
-        {
+                         { "pi", 3.141 },
-            {"", "Hello"},
+                         { "happy", true },
-            {"pi", 3.141},
+                         { "name", "Niels" },
-            {"happy", true},
+                         { "nothing", nullptr },
-            {"name", "Niels"},
+                         { "answer", { { "everything", 42 } } },
-            {"nothing", nullptr},
+                         { "list", { 1, 0, 2 } },
-            {
+                         { "object",
-                "answer", {
+                           { { "currency", "USD" }, { "value", 42.99 }, { "", "empty string" }, { "/", "slash" }, { "~", "tilde" }, { "~1", "tilde1" } } } };
-                    {"everything", 42}
-                }
-            },
-            {"list", {1, 0, 2}},
-            {
-                "object", {
-                    {"currency", "USD"},
-                    {"value", 42.99},
-                    {"", "empty string"},
-                    {"/", "slash"},
-                    {"~", "tilde"},
-                    {"~1", "tilde1"}
-                }
-            }
-        };
 
         // empty json_pointer returns the root JSON-object
         auto ptr = ""_json_pointer;
@@ -584,36 +554,20 @@ TEST_CASE("JSON pointers")
         CHECK(ptr.empty());
         CHECK(j[ptr] == j);
 
-        CHECK_THROWS_WITH(ptr.pop_back(),
+        CHECK_THROWS_WITH(ptr.pop_back(), "[json.exception.out_of_range.405] JSON pointer has no parent");
-                          "[json.exception.out_of_range.405] JSON pointer has no parent");
     }
 
     SECTION("operators")
     {
-        const json j =
+        const json j = { { "", "Hello" },
-        {
+                         { "pi", 3.141 },
-            {"", "Hello"},
+                         { "happy", true },
-            {"pi", 3.141},
+                         { "name", "Niels" },
-            {"happy", true},
+                         { "nothing", nullptr },
-            {"name", "Niels"},
+                         { "answer", { { "everything", 42 } } },
-            {"nothing", nullptr},
+                         { "list", { 1, 0, 2 } },
-            {
+                         { "object",
-                "answer", {
+                           { { "currency", "USD" }, { "value", 42.99 }, { "", "empty string" }, { "/", "slash" }, { "~", "tilde" }, { "~1", "tilde1" } } } };
-                    {"everything", 42}
-                }
-            },
-            {"list", {1, 0, 2}},
-            {
-                "object", {
-                    {"currency", "USD"},
-                    {"value", 42.99},
-                    {"", "empty string"},
-                    {"/", "slash"},
-                    {"~", "tilde"},
-                    {"~1", "tilde1"}
-                }
-            }
-        };
 
         // empty json_pointer returns the root JSON-object
         auto ptr = ""_json_pointer;
@@ -653,7 +607,7 @@ TEST_CASE("JSON pointers")
     {
         const char* ptr_cpstring = "/foo/bar";
         const char ptr_castring[] = "/foo/bar";  // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
-        std::string ptr_string{"/foo/bar"};
+        std::string ptr_string{ "/foo/bar" };
         auto ptr1 = json::json_pointer(ptr_string);
         auto ptr2 = json::json_pointer(ptr_string);
 
@@ -687,13 +641,17 @@ TEST_CASE("JSON pointers")
         SECTION("exceptions")
         {
             CHECK_THROWS_WITH_AS(ptr1 == "foo",
-                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS("foo" == ptr1,
-                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS(ptr1 == "/~~",
-                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'",
+                                 json::parse_error&);
             CHECK_THROWS_WITH_AS("/~~" == ptr1,
-                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'",
+                                 json::parse_error&);
         }
     }
 
@@ -741,10 +699,10 @@ TEST_CASE("JSON pointers")
         CHECK(std::is_same<json_ptr_str::string_t, json_ptr_j::string_t>::value);
         CHECK(std::is_same<json_ptr_str::string_t, json_ptr_oj::string_t>::value);
 
-        std::string const ptr_string{"/foo/0"};
+        std::string const ptr_string{ "/foo/0" };
-        json_ptr_str ptr{ptr_string};
+        json_ptr_str ptr{ ptr_string };
-        json_ptr_j ptr_j{ptr_string};
+        json_ptr_j ptr_j{ ptr_string };
-        json_ptr_oj ptr_oj{ptr_string};
+        json_ptr_oj ptr_oj{ ptr_string };
 
         CHECK(j.contains(ptr));
         CHECK(j.contains(ptr_j));

tests/src/unit-large_json.cpp

@@ -26,4 +26,3 @@ TEST_CASE("tests on very large JSONs")
         CHECK_NOTHROW(_ = nlohmann::json::parse(s));
     }
 }
-

tests/src/unit-merge_patch.cpp

@@ -11,7 +11,7 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 #ifdef JSON_TEST_NO_GLOBAL_UDLS
-    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+using namespace nlohmann::literals;  // NOLINT(google-build-using-namespace)
 #endif
 
 TEST_CASE("JSON Merge Patch")

tests/src/unit-meta.cpp

@@ -20,13 +20,7 @@ TEST_CASE("version information")
         CHECK(j["name"] == "JSON for Modern C++");
         CHECK(j["copyright"] == "(C) 2013-2023 Niels Lohmann");
         CHECK(j["url"] == "https://github.com/nlohmann/json");
-        CHECK(j["version"] == json(
+        CHECK(j["version"] == json({ { "string", "3.11.3" }, { "major", 3 }, { "minor", 11 }, { "patch", 3 } }));
-        {
-            {"string", "3.11.3"},
-            {"major", 3},
-            {"minor", 11},
-            {"patch", 3}
-        }));
 
         CHECK(j.find("platform") != j.end());
         CHECK(j.at("compiler").find("family") != j.at("compiler").end());

tests/src/unit-modifiers.cpp

@@ -51,7 +51,7 @@ TEST_CASE("modifiers")
 
             SECTION("filled array")
             {
-                json j = {1, 2, 3};
+                json j = { 1, 2, 3 };
                 json const k = j;
 
                 j.clear();
@@ -76,7 +76,7 @@ TEST_CASE("modifiers")
 
             SECTION("filled object")
             {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}};
+                json j = { { "one", 1 }, { "two", 2 }, { "three", 3 } };
                 json const k = j;
 
                 j.clear();
@@ -101,7 +101,7 @@ TEST_CASE("modifiers")
 
             SECTION("filled binary")
             {
-                json j = json::binary({1, 2, 3, 4, 5});
+                json j = json::binary({ 1, 2, 3, 4, 5 });
                 json const k = j;
 
                 j.clear();
@@ -164,15 +164,15 @@ TEST_CASE("modifiers")
                     j.push_back(1);
                     j.push_back(2);
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2}));
+                    CHECK(j == json({ 1, 2 }));
                 }
 
                 SECTION("array")
                 {
-                    json j = {1, 2, 3};
+                    json j = { 1, 2, 3 };
                     j.push_back("Hello");
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2, 3, "Hello"}));
+                    CHECK(j == json({ 1, 2, 3, "Hello" }));
                 }
 
                 SECTION("other type")
@@ -191,16 +191,16 @@ TEST_CASE("modifiers")
                     j.push_back(k);
                     j.push_back(k);
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 1}));
+                    CHECK(j == json({ 1, 1 }));
                 }
 
                 SECTION("array")
                 {
-                    json j = {1, 2, 3};
+                    json j = { 1, 2, 3 };
                     json const k("Hello");
                     j.push_back(k);
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2, 3, "Hello"}));
+                    CHECK(j == json({ 1, 2, 3, "Hello" }));
                 }
 
                 SECTION("other type")
@@ -217,8 +217,8 @@ TEST_CASE("modifiers")
             SECTION("null")
             {
                 json j;
-                j.push_back(json::object_t::value_type({"one", 1}));
+                j.push_back(json::object_t::value_type({ "one", 1 }));
-                j.push_back(json::object_t::value_type({"two", 2}));
+                j.push_back(json::object_t::value_type({ "two", 2 }));
                 CHECK(j.type() == json::value_t::object);
                 CHECK(j.size() == 2);
                 CHECK(j["one"] == json(1));
@@ -228,8 +228,8 @@ TEST_CASE("modifiers")
             SECTION("object")
             {
                 json j(json::value_t::object);
-                j.push_back(json::object_t::value_type({"one", 1}));
+                j.push_back(json::object_t::value_type({ "one", 1 }));
-                j.push_back(json::object_t::value_type({"two", 2}));
+                j.push_back(json::object_t::value_type({ "two", 2 }));
                 CHECK(j.size() == 2);
                 CHECK(j["one"] == json(1));
                 CHECK(j["two"] == json(2));
@@ -239,7 +239,9 @@ TEST_CASE("modifiers")
             {
                 json j = 1;
                 json const k("Hello");
-                CHECK_THROWS_WITH_AS(j.push_back(json::object_t::value_type({"one", 1})), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back(json::object_t::value_type({ "one", 1 })),
+                                     "[json.exception.type_error.308] cannot use push_back() with number",
+                                     json::type_error&);
             }
         }
 
@@ -248,35 +250,35 @@ TEST_CASE("modifiers")
             SECTION("null")
             {
                 json j;
-                j.push_back({"foo", "bar"});
+                j.push_back({ "foo", "bar" });
-                CHECK(j == json::array({{"foo", "bar"}}));
+                CHECK(j == json::array({ { "foo", "bar" } }));
 
                 json k;
-                k.push_back({1, 2, 3});
+                k.push_back({ 1, 2, 3 });
-                CHECK(k == json::array({{1, 2, 3}}));
+                CHECK(k == json::array({ { 1, 2, 3 } }));
             }
 
             SECTION("array")
             {
-                json j = {1, 2, 3};
+                json j = { 1, 2, 3 };
-                j.push_back({"foo", "bar"});
+                j.push_back({ "foo", "bar" });
-                CHECK(j == json({1, 2, 3, {"foo", "bar"}}));
+                CHECK(j == json({ 1, 2, 3, { "foo", "bar" } }));
 
-                json k = {1, 2, 3};
+                json k = { 1, 2, 3 };
-                k.push_back({1, 2, 3});
+                k.push_back({ 1, 2, 3 });
-                CHECK(k == json({1, 2, 3, {1, 2, 3}}));
+                CHECK(k == json({ 1, 2, 3, { 1, 2, 3 } }));
             }
 
             SECTION("object")
             {
-                json j = {{"key1", 1}};
+                json j = { { "key1", 1 } };
-                j.push_back({"key2", "bar"});
+                j.push_back({ "key2", "bar" });
-                CHECK(j == json({{"key1", 1}, {"key2", "bar"}}));
+                CHECK(j == json({ { "key1", 1 }, { "key2", "bar" } }));
 
                 // invalid values (no string/val pair)
-                CHECK_THROWS_WITH_AS(j.push_back({1}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back({ 1 }), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
-                CHECK_THROWS_WITH_AS(j.push_back({1, 2}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back({ 1, 2 }), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
-                CHECK_THROWS_WITH_AS(j.push_back({1, 2, 3, 4}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back({ 1, 2, 3, 4 }), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
             }
         }
     }
@@ -293,25 +295,25 @@ TEST_CASE("modifiers")
                 auto& x2 = j.emplace_back(2);
                 CHECK(x2 == 2);
                 CHECK(j.type() == json::value_t::array);
-                CHECK(j == json({1, 2}));
+                CHECK(j == json({ 1, 2 }));
             }
 
             SECTION("array")
             {
-                json j = {1, 2, 3};
+                json j = { 1, 2, 3 };
                 auto& x = j.emplace_back("Hello");
                 CHECK(x == "Hello");
                 CHECK(j.type() == json::value_t::array);
-                CHECK(j == json({1, 2, 3, "Hello"}));
+                CHECK(j == json({ 1, 2, 3, "Hello" }));
             }
 
             SECTION("multiple values")
             {
                 json j;
                 auto& x = j.emplace_back(3, "foo");
-                CHECK(x == json({"foo", "foo", "foo"}));
+                CHECK(x == json({ "foo", "foo", "foo" }));
                 CHECK(j.type() == json::value_t::array);
-                CHECK(j == json({{"foo", "foo", "foo"}}));
+                CHECK(j == json({ { "foo", "foo", "foo" } }));
             }
         }
 
@@ -350,13 +352,13 @@ TEST_CASE("modifiers")
                 CHECK(*res3.first == "bam");
 
                 // the final object
-                CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
+                CHECK(j == json({ { "baz", "bam" }, { "foo", "bar" } }));
             }
 
             SECTION("object")
             {
                 // start with an object
-                json j = {{"foo", "bar"}};
+                json j = { { "foo", "bar" } };
 
                 // add a new key
                 auto res1 = j.emplace("baz", "bam");
@@ -369,7 +371,7 @@ TEST_CASE("modifiers")
                 CHECK(*res2.first == "bar");
 
                 // check final object
-                CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
+                CHECK(j == json({ { "baz", "bam" }, { "foo", "bar" } }));
             }
         }
 
@@ -392,15 +394,15 @@ TEST_CASE("modifiers")
                     j += 1;
                     j += 2;
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2}));
+                    CHECK(j == json({ 1, 2 }));
                 }
 
                 SECTION("array")
                 {
-                    json j = {1, 2, 3};
+                    json j = { 1, 2, 3 };
                     j += "Hello";
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2, 3, "Hello"}));
+                    CHECK(j == json({ 1, 2, 3, "Hello" }));
                 }
 
                 SECTION("other type")
@@ -419,16 +421,16 @@ TEST_CASE("modifiers")
                     j += k;
                     j += k;
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 1}));
+                    CHECK(j == json({ 1, 1 }));
                 }
 
                 SECTION("array")
                 {
-                    json j = {1, 2, 3};
+                    json j = { 1, 2, 3 };
                     json const k("Hello");
                     j += k;
                     CHECK(j.type() == json::value_t::array);
-                    CHECK(j == json({1, 2, 3, "Hello"}));
+                    CHECK(j == json({ 1, 2, 3, "Hello" }));
                 }
 
                 SECTION("other type")
@@ -445,8 +447,8 @@ TEST_CASE("modifiers")
             SECTION("null")
             {
                 json j;
-                j += json::object_t::value_type({"one", 1});
+                j += json::object_t::value_type({ "one", 1 });
-                j += json::object_t::value_type({"two", 2});
+                j += json::object_t::value_type({ "two", 2 });
                 CHECK(j.type() == json::value_t::object);
                 CHECK(j.size() == 2);
                 CHECK(j["one"] == json(1));
@@ -456,8 +458,8 @@ TEST_CASE("modifiers")
             SECTION("object")
             {
                 json j(json::value_t::object);
-                j += json::object_t::value_type({"one", 1});
+                j += json::object_t::value_type({ "one", 1 });
-                j += json::object_t::value_type({"two", 2});
+                j += json::object_t::value_type({ "two", 2 });
                 CHECK(j.size() == 2);
                 CHECK(j["one"] == json(1));
                 CHECK(j["two"] == json(2));
@@ -467,7 +469,9 @@ TEST_CASE("modifiers")
             {
                 json j = 1;
                 json const k("Hello");
-                CHECK_THROWS_WITH_AS(j += json::object_t::value_type({"one", 1}), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                CHECK_THROWS_WITH_AS(j += json::object_t::value_type({ "one", 1 }),
+                                     "[json.exception.type_error.308] cannot use push_back() with number",
+                                     json::type_error&);
             }
         }
 
@@ -476,40 +480,40 @@ TEST_CASE("modifiers")
             SECTION("null")
             {
                 json j;
-                j += {"foo", "bar"};
+                j += { "foo", "bar" };
-                CHECK(j == json::array({{"foo", "bar"}}));
+                CHECK(j == json::array({ { "foo", "bar" } }));
 
                 json k;
-                k += {1, 2, 3};
+                k += { 1, 2, 3 };
-                CHECK(k == json::array({{1, 2, 3}}));
+                CHECK(k == json::array({ { 1, 2, 3 } }));
             }
 
             SECTION("array")
             {
-                json j = {1, 2, 3};
+                json j = { 1, 2, 3 };
-                j += {"foo", "bar"};
+                j += { "foo", "bar" };
-                CHECK(j == json({1, 2, 3, {"foo", "bar"}}));
+                CHECK(j == json({ 1, 2, 3, { "foo", "bar" } }));
 
-                json k = {1, 2, 3};
+                json k = { 1, 2, 3 };
-                k += {1, 2, 3};
+                k += { 1, 2, 3 };
-                CHECK(k == json({1, 2, 3, {1, 2, 3}}));
+                CHECK(k == json({ 1, 2, 3, { 1, 2, 3 } }));
             }
 
             SECTION("object")
             {
-                json j = {{"key1", 1}};
+                json j = { { "key1", 1 } };
-                j += {"key2", "bar"};
+                j += { "key2", "bar" };
-                CHECK(j == json({{"key1", 1}, {"key2", "bar"}}));
+                CHECK(j == json({ { "key1", 1 }, { "key2", "bar" } }));
 
-                json k = {{"key1", 1}};
+                json k = { { "key1", 1 } };
-                CHECK_THROWS_WITH_AS((k += {1, 2, 3, 4}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS((k += { 1, 2, 3, 4 }), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
             }
         }
     }
 
     SECTION("insert()")
     {
-        json j_array = {1, 2, 3, 4};
+        json j_array = { 1, 2, 3, 4 };
         json j_value = 5;
 
         SECTION("value at position")
@@ -520,7 +524,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK(j_array.begin() == it);
-                CHECK(j_array == json({5, 1, 2, 3, 4}));
+                CHECK(j_array == json({ 5, 1, 2, 3, 4 }));
             }
 
             SECTION("insert in the middle")
@@ -529,7 +533,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK((it - j_array.begin()) == 2);
-                CHECK(j_array == json({1, 2, 5, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 5, 3, 4 }));
             }
 
             SECTION("insert before end()")
@@ -538,7 +542,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK((j_array.end() - it) == 1);
-                CHECK(j_array == json({1, 2, 3, 4, 5}));
+                CHECK(j_array == json({ 1, 2, 3, 4, 5 }));
             }
         }
 
@@ -550,7 +554,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK(j_array.begin() == it);
-                CHECK(j_array == json({5, 1, 2, 3, 4}));
+                CHECK(j_array == json({ 5, 1, 2, 3, 4 }));
             }
 
             SECTION("insert in the middle")
@@ -559,7 +563,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK((it - j_array.begin()) == 2);
-                CHECK(j_array == json({1, 2, 5, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 5, 3, 4 }));
             }
 
             SECTION("insert before end()")
@@ -568,7 +572,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 5);
                 CHECK(*it == j_value);
                 CHECK((j_array.end() - it) == 1);
-                CHECK(j_array == json({1, 2, 3, 4, 5}));
+                CHECK(j_array == json({ 1, 2, 3, 4, 5 }));
             }
         }
 
@@ -580,7 +584,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 7);
                 CHECK(*it == j_value);
                 CHECK(j_array.begin() == it);
-                CHECK(j_array == json({5, 5, 5, 1, 2, 3, 4}));
+                CHECK(j_array == json({ 5, 5, 5, 1, 2, 3, 4 }));
             }
 
             SECTION("insert in the middle")
@@ -589,7 +593,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 7);
                 CHECK(*it == j_value);
                 CHECK((it - j_array.begin()) == 2);
-                CHECK(j_array == json({1, 2, 5, 5, 5, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 5, 5, 5, 3, 4 }));
             }
 
             SECTION("insert before end()")
@@ -598,7 +602,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 7);
                 CHECK(*it == j_value);
                 CHECK((j_array.end() - it) == 3);
-                CHECK(j_array == json({1, 2, 3, 4, 5, 5, 5}));
+                CHECK(j_array == json({ 1, 2, 3, 4, 5, 5, 5 }));
             }
 
             SECTION("insert nothing (count = 0)")
@@ -608,13 +612,13 @@ TEST_CASE("modifiers")
                 // the returned iterator points to the first inserted element;
                 // there were 4 elements, so it should point to the 5th
                 CHECK(it == j_array.begin() + 4);
-                CHECK(j_array == json({1, 2, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 3, 4 }));
             }
         }
 
         SECTION("range for array")
         {
-            json j_other_array = {"first", "second"};
+            json j_other_array = { "first", "second" };
 
             SECTION("proper usage")
             {
@@ -622,7 +626,7 @@ TEST_CASE("modifiers")
                 CHECK(j_array.size() == 6);
                 CHECK(*it == *j_other_array.begin());
                 CHECK((j_array.end() - it) == 2);
-                CHECK(j_array == json({1, 2, 3, 4, "first", "second"}));
+                CHECK(j_array == json({ 1, 2, 3, 4, "first", "second" }));
             }
 
             SECTION("empty range")
@@ -630,24 +634,26 @@ TEST_CASE("modifiers")
                 auto it = j_array.insert(j_array.end(), j_other_array.begin(), j_other_array.begin());
                 CHECK(j_array.size() == 4);
                 CHECK(it == j_array.end());
-                CHECK(j_array == json({1, 2, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 3, 4 }));
             }
 
             SECTION("invalid iterators")
             {
-                json j_other_array2 = {"first", "second"};
+                json j_other_array2 = { "first", "second" };
 
-                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_array.begin(), j_array.end()), "[json.exception.invalid_iterator.211] passed iterators may not belong to container",
+                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_array.begin(), j_array.end()),
+                                     "[json.exception.invalid_iterator.211] passed iterators may not belong to container",
                                      json::invalid_iterator&);
-                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_other_array.begin(), j_other_array2.end()), "[json.exception.invalid_iterator.210] iterators do not fit",
+                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_other_array.begin(), j_other_array2.end()),
+                                     "[json.exception.invalid_iterator.210] iterators do not fit",
                                      json::invalid_iterator&);
             }
         }
 
         SECTION("range for object")
         {
-            json j_object1 = {{"one", "eins"}, {"two", "zwei"}};
+            json j_object1 = { { "one", "eins" }, { "two", "zwei" } };
-            json j_object2 = {{"eleven", "elf"}, {"seventeen", "siebzehn"}};
+            json j_object2 = { { "eleven", "elf" }, { "seventeen", "siebzehn" } };
 
             SECTION("proper usage")
             {
@@ -663,11 +669,17 @@ TEST_CASE("modifiers")
 
             SECTION("invalid iterators")
             {
-                json const j_other_array2 = {"first", "second"};
+                json const j_other_array2 = { "first", "second" };
 
-                CHECK_THROWS_WITH_AS(j_array.insert(j_object2.begin(), j_object2.end()), "[json.exception.type_error.309] cannot use insert() with array", json::type_error&);
+                CHECK_THROWS_WITH_AS(j_array.insert(j_object2.begin(), j_object2.end()),
-                CHECK_THROWS_WITH_AS(j_object1.insert(j_object1.begin(), j_object2.end()), "[json.exception.invalid_iterator.210] iterators do not fit", json::invalid_iterator&);
+                                     "[json.exception.type_error.309] cannot use insert() with array",
-                CHECK_THROWS_WITH_AS(j_object1.insert(j_array.begin(), j_array.end()), "[json.exception.invalid_iterator.202] iterators first and last must point to objects", json::invalid_iterator&);
+                                     json::type_error&);
+                CHECK_THROWS_WITH_AS(j_object1.insert(j_object1.begin(), j_object2.end()),
+                                     "[json.exception.invalid_iterator.210] iterators do not fit",
+                                     json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(j_object1.insert(j_array.begin(), j_array.end()),
+                                     "[json.exception.invalid_iterator.202] iterators first and last must point to objects",
+                                     json::invalid_iterator&);
             }
         }
 
@@ -675,54 +687,72 @@ TEST_CASE("modifiers")
         {
             SECTION("insert before begin()")
             {
-                auto it = j_array.insert(j_array.begin(), {7, 8, 9});
+                auto it = j_array.insert(j_array.begin(), { 7, 8, 9 });
                 CHECK(j_array.size() == 7);
                 CHECK(*it == json(7));
                 CHECK(j_array.begin() == it);
-                CHECK(j_array == json({7, 8, 9, 1, 2, 3, 4}));
+                CHECK(j_array == json({ 7, 8, 9, 1, 2, 3, 4 }));
             }
 
             SECTION("insert in the middle")
             {
-                auto it = j_array.insert(j_array.begin() + 2, {7, 8, 9});
+                auto it = j_array.insert(j_array.begin() + 2, { 7, 8, 9 });
                 CHECK(j_array.size() == 7);
                 CHECK(*it == json(7));
                 CHECK((it - j_array.begin()) == 2);
-                CHECK(j_array == json({1, 2, 7, 8, 9, 3, 4}));
+                CHECK(j_array == json({ 1, 2, 7, 8, 9, 3, 4 }));
             }
 
             SECTION("insert before end()")
             {
-                auto it = j_array.insert(j_array.end(), {7, 8, 9});
+                auto it = j_array.insert(j_array.end(), { 7, 8, 9 });
                 CHECK(j_array.size() == 7);
                 CHECK(*it == json(7));
                 CHECK((j_array.end() - it) == 3);
-                CHECK(j_array == json({1, 2, 3, 4, 7, 8, 9}));
+                CHECK(j_array == json({ 1, 2, 3, 4, 7, 8, 9 }));
             }
         }
 
         SECTION("invalid iterator")
         {
             // pass iterator to a different array
-            json j_another_array = {1, 2};
+            json j_another_array = { 1, 2 };
-            json j_yet_another_array = {"first", "second"};
+            json j_yet_another_array = { "first", "second" };
-            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10),
-            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_value), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                                 "[json.exception.invalid_iterator.202] iterator does not fit current value",
-            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10, 11), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                                 json::invalid_iterator&);
-            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_yet_another_array.begin(), j_yet_another_array.end()), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_value),
-            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), {1, 2, 3, 4}), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                                 "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                 json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10, 11),
+                                 "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                 json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_yet_another_array.begin(), j_yet_another_array.end()),
+                                 "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                 json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), { 1, 2, 3, 4 }),
+                                 "[json.exception.invalid_iterator.202] iterator does not fit current value",
+                                 json::invalid_iterator&);
         }
 
         SECTION("non-array type")
         {
             // call insert on a non-array type
             json j_nonarray = 3;
-            json j_yet_another_array = {"first", "second"};
+            json j_yet_another_array = { "first", "second" };
             CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), 10), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
-            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_value), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_value),
-            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), 10, 11), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+                                 "[json.exception.type_error.309] cannot use insert() with number",
-            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_yet_another_array.begin(), j_yet_another_array.end()), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+                                 json::type_error&);
-            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), {1, 2, 3, 4}), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), 10, 11),
+                                 "[json.exception.type_error.309] cannot use insert() with number",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_yet_another_array.begin(), j_yet_another_array.end()),
+                                 "[json.exception.type_error.309] cannot use insert() with number",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), { 1, 2, 3, 4 }),
+                                 "[json.exception.type_error.309] cannot use insert() with number",
+                                 json::type_error&);
         }
     }
 
@@ -730,16 +760,16 @@ TEST_CASE("modifiers")
     {
         SECTION("non-recursive (default)")
         {
-            json j_object1 = {{"one", "eins"}, {"two", "zwei"}};
+            json j_object1 = { { "one", "eins" }, { "two", "zwei" } };
-            json j_object2 = {{"three", "drei"}, {"two", "zwo"}};
+            json j_object2 = { { "three", "drei" }, { "two", "zwo" } };
-            json j_array = {1, 2, 3, 4};
+            json j_array = { 1, 2, 3, 4 };
 
             SECTION("const reference")
             {
                 SECTION("proper usage")
                 {
                     j_object1.update(j_object2);
-                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwo"}, {"three", "drei"}}));
+                    CHECK(j_object1 == json({ { "one", "eins" }, { "two", "zwo" }, { "three", "drei" } }));
 
                     json j_null;
                     j_null.update(j_object2);
@@ -759,7 +789,7 @@ TEST_CASE("modifiers")
                 SECTION("proper usage")
                 {
                     j_object1.update(j_object2.begin(), j_object2.end());
-                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwo"}, {"three", "drei"}}));
+                    CHECK(j_object1 == json({ { "one", "eins" }, { "two", "zwo" }, { "three", "drei" } }));
 
                     json j_null;
                     j_null.update(j_object2.begin(), j_object2.end());
@@ -769,16 +799,22 @@ TEST_CASE("modifiers")
                 SECTION("empty range")
                 {
                     j_object1.update(j_object2.begin(), j_object2.begin());
-                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwei"}}));
+                    CHECK(j_object1 == json({ { "one", "eins" }, { "two", "zwei" } }));
                 }
 
                 SECTION("invalid iterators")
                 {
-                    json const j_other_array2 = {"first", "second"};
+                    json const j_other_array2 = { "first", "second" };
 
-                    CHECK_THROWS_WITH_AS(j_array.update(j_object2.begin(), j_object2.end()), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_array.update(j_object2.begin(), j_object2.end()),
-                    CHECK_THROWS_WITH_AS(j_object1.update(j_object1.begin(), j_object2.end()), "[json.exception.invalid_iterator.210] iterators do not fit", json::invalid_iterator&);
+                                         "[json.exception.type_error.312] cannot use update() with array",
-                    CHECK_THROWS_WITH_AS(j_object1.update(j_array.begin(), j_array.end()), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+                                         json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_object1.update(j_object1.begin(), j_object2.end()),
+                                         "[json.exception.invalid_iterator.210] iterators do not fit",
+                                         json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j_object1.update(j_array.begin(), j_array.end()),
+                                         "[json.exception.type_error.312] cannot use update() with array",
+                                         json::type_error&);
                 }
             }
         }
@@ -789,18 +825,18 @@ TEST_CASE("modifiers")
             {
                 SECTION("extend object")
                 {
-                    json j1 = {{"string", "s"}, {"numbers", {{"one", 1}}}};
+                    json j1 = { { "string", "s" }, { "numbers", { { "one", 1 } } } };
-                    json const j2 = {{"string", "t"}, {"numbers", {{"two", 2}}}};
+                    json const j2 = { { "string", "t" }, { "numbers", { { "two", 2 } } } };
                     j1.update(j2, true);
-                    CHECK(j1 == json({{"string", "t"}, {"numbers", {{"one", 1}, {"two", 2}}}}));
+                    CHECK(j1 == json({ { "string", "t" }, { "numbers", { { "one", 1 }, { "two", 2 } } } }));
                 }
 
                 SECTION("replace object")
                 {
-                    json j1 = {{"string", "s"}, {"numbers", {{"one", 1}}}};
+                    json j1 = { { "string", "s" }, { "numbers", { { "one", 1 } } } };
-                    json const j2 = {{"string", "t"}, {"numbers", 1}};
+                    json const j2 = { { "string", "t" }, { "numbers", 1 } };
                     j1.update(j2, true);
-                    CHECK(j1 == json({{"string", "t"}, {"numbers", 1}}));
+                    CHECK(j1 == json({ { "string", "t" }, { "numbers", 1 } }));
                 }
             }
         }
@@ -838,22 +874,22 @@ TEST_CASE("modifiers")
         {
             SECTION("array_t type")
             {
-                json j = {1, 2, 3, 4};
+                json j = { 1, 2, 3, 4 };
-                json::array_t a = {"foo", "bar", "baz"};
+                json::array_t a = { "foo", "bar", "baz" };
 
                 j.swap(a);
 
-                CHECK(j == json({"foo", "bar", "baz"}));
+                CHECK(j == json({ "foo", "bar", "baz" }));
 
                 j.swap(a);
 
-                CHECK(j == json({1, 2, 3, 4}));
+                CHECK(j == json({ 1, 2, 3, 4 }));
             }
 
             SECTION("non-array_t type")
             {
                 json j = 17;
-                json::array_t a = {"foo", "bar", "baz"};
+                json::array_t a = { "foo", "bar", "baz" };
 
                 CHECK_THROWS_WITH_AS(j.swap(a), "[json.exception.type_error.310] cannot use swap(array_t&) with number", json::type_error&);
             }
@@ -863,22 +899,22 @@ TEST_CASE("modifiers")
         {
             SECTION("object_t type")
             {
-                json j = {{"one", 1}, {"two", 2}};
+                json j = { { "one", 1 }, { "two", 2 } };
-                json::object_t o = {{"cow", "Kuh"}, {"chicken", "Huhn"}};
+                json::object_t o = { { "cow", "Kuh" }, { "chicken", "Huhn" } };
 
                 j.swap(o);
 
-                CHECK(j == json({{"cow", "Kuh"}, {"chicken", "Huhn"}}));
+                CHECK(j == json({ { "cow", "Kuh" }, { "chicken", "Huhn" } }));
 
                 j.swap(o);
 
-                CHECK(j == json({{"one", 1}, {"two", 2}}));
+                CHECK(j == json({ { "one", 1 }, { "two", 2 } }));
             }
 
             SECTION("non-object_t type")
             {
                 json j = 17;
-                json::object_t o = {{"cow", "Kuh"}, {"chicken", "Huhn"}};
+                json::object_t o = { { "cow", "Kuh" }, { "chicken", "Huhn" } };
 
                 CHECK_THROWS_WITH_AS(j.swap(o), "[json.exception.type_error.310] cannot use swap(object_t&) with number", json::type_error&);
             }
@@ -913,37 +949,37 @@ TEST_CASE("modifiers")
         {
             SECTION("binary_t type")
             {
-                json j = json::binary({1, 2, 3, 4});
+                json j = json::binary({ 1, 2, 3, 4 });
-                json::binary_t s = {{5, 6, 7, 8}};
+                json::binary_t s = { { 5, 6, 7, 8 } };
 
                 j.swap(s);
 
-                CHECK(j == json::binary({5, 6, 7, 8}));
+                CHECK(j == json::binary({ 5, 6, 7, 8 }));
 
                 j.swap(s);
 
-                CHECK(j == json::binary({1, 2, 3, 4}));
+                CHECK(j == json::binary({ 1, 2, 3, 4 }));
             }
 
             SECTION("binary_t::container_type type")
             {
-                json j = json::binary({1, 2, 3, 4});
+                json j = json::binary({ 1, 2, 3, 4 });
-                std::vector<std::uint8_t> s = {{5, 6, 7, 8}};
+                std::vector<std::uint8_t> s = { { 5, 6, 7, 8 } };
 
                 j.swap(s);
 
-                CHECK(j == json::binary({5, 6, 7, 8}));
+                CHECK(j == json::binary({ 5, 6, 7, 8 }));
 
                 j.swap(s);
 
-                CHECK(j == json::binary({1, 2, 3, 4}));
+                CHECK(j == json::binary({ 1, 2, 3, 4 }));
             }
 
             SECTION("non-binary_t type")
             {
                 json j = 17;
-                json::binary_t s1 = {{1, 2, 3, 4}};
+                json::binary_t s1 = { { 1, 2, 3, 4 } };
-                std::vector<std::uint8_t> s2 = {{5, 6, 7, 8}};
+                std::vector<std::uint8_t> s2 = { { 5, 6, 7, 8 } };
 
                 CHECK_THROWS_WITH_AS(j.swap(s1), "[json.exception.type_error.310] cannot use swap(binary_t&) with number", json::type_error);
                 CHECK_THROWS_WITH_AS(j.swap(s2), "[json.exception.type_error.310] cannot use swap(binary_t::container_type&) with number", json::type_error);

tests/src/unit-msgpack.cpp

@@ -11,23 +11,24 @@
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 #ifdef JSON_TEST_NO_GLOBAL_UDLS
-    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+using namespace nlohmann::literals;  // NOLINT(google-build-using-namespace)
 #endif
 
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
 #include <fstream>
-#include <sstream>
 #include <iomanip>
 #include <limits>
 #include <set>
-#include "make_test_data_available.hpp"
+#include <sstream>
-#include "test_utils.hpp"
 
 namespace
 {
 class SaxCountdown
 {
   public:
-    explicit SaxCountdown(const int count) : events_left(count)
+    explicit SaxCountdown(const int count)
+      : events_left(count)
     {}
 
     bool null()
@@ -90,7 +91,9 @@ class SaxCountdown
         return events_left-- > 0;
     }
 
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    bool parse_error(std::size_t /*unused*/,
+                     const std::string& /*unused*/,
+                     const json::exception& /*unused*/)  // NOLINT(readability-convert-member-functions-to-static)
     {
         return false;
     }
@@ -115,7 +118,7 @@ TEST_CASE("MessagePack")
         SECTION("null")
         {
             json const j = nullptr;
-            std::vector<uint8_t> const expected = {0xc0};
+            std::vector<uint8_t> const expected = { 0xc0 };
             const auto result = json::to_msgpack(j);
             CHECK(result == expected);
 
@@ -129,7 +132,7 @@ TEST_CASE("MessagePack")
             SECTION("true")
             {
                 json const j = true;
-                std::vector<uint8_t> const expected = {0xc3};
+                std::vector<uint8_t> const expected = { 0xc3 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -141,7 +144,7 @@ TEST_CASE("MessagePack")
             SECTION("false")
             {
                 json const j = false;
-                std::vector<uint8_t> const expected = {0xc2};
+                std::vector<uint8_t> const expected = { 0xc2 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -168,10 +171,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{ static_cast<uint8_t>(i) };
-                        {
-                            static_cast<uint8_t>(i)
-                        };
 
                         // compare result + size
                         const auto result = json::to_msgpack(j);
@@ -201,7 +201,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected{static_cast<uint8_t>(i)};
+                        std::vector<uint8_t> const expected{ static_cast<uint8_t>(i) };
 
                         // compare result + size
                         const auto result = json::to_msgpack(j);
@@ -231,8 +231,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcc,
                             static_cast<uint8_t>(i),
                         };
@@ -267,8 +266,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcd,
                             static_cast<uint8_t>((i >> 8) & 0xff),
                             static_cast<uint8_t>(i & 0xff),
@@ -292,10 +290,7 @@ TEST_CASE("MessagePack")
 
                 SECTION("65536..4294967295 (int 32)")
                 {
-                    for (uint32_t i :
+                    for (uint32_t i : { 65536u, 77777u, 1048576u, 4294967295u })
-                            {
-                                65536u, 77777u, 1048576u, 4294967295u
-                            })
                     {
                         CAPTURE(i)
 
@@ -307,8 +302,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xce,
                             static_cast<uint8_t>((i >> 24) & 0xff),
                             static_cast<uint8_t>((i >> 16) & 0xff),
@@ -323,10 +317,8 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xce);
-                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) + (static_cast<uint32_t>(result[2]) << 020) +
-                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) + static_cast<uint32_t>(result[4]);
-                                                  (static_cast<uint32_t>(result[3]) << 010) +
-                                                  static_cast<uint32_t>(result[4]);
                         CHECK(restored == i);
 
                         // roundtrip
@@ -337,10 +329,7 @@ TEST_CASE("MessagePack")
 
                 SECTION("4294967296..9223372036854775807 (int 64)")
                 {
-                    for (uint64_t i :
+                    for (uint64_t i : { 4294967296LU, 9223372036854775807LU })
-                            {
-                                4294967296LU, 9223372036854775807LU
-                            })
                     {
                         CAPTURE(i)
 
@@ -352,8 +341,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcf,
                             static_cast<uint8_t>((i >> 070) & 0xff),
                             static_cast<uint8_t>((i >> 060) & 0xff),
@@ -372,14 +360,10 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xcf);
-                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) + (static_cast<uint64_t>(result[2]) << 060) +
-                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) + (static_cast<uint64_t>(result[4]) << 040) +
-                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) + (static_cast<uint64_t>(result[6]) << 020) +
-                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) + static_cast<uint64_t>(result[8]);
-                                                  (static_cast<uint64_t>(result[5]) << 030) +
-                                                  (static_cast<uint64_t>(result[6]) << 020) +
-                                                  (static_cast<uint64_t>(result[7]) << 010) +
-                                                  static_cast<uint64_t>(result[8]);
                         CHECK(restored == i);
 
                         // roundtrip
@@ -401,8 +385,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xd0,
                             static_cast<uint8_t>(i),
                         };
@@ -425,7 +408,7 @@ TEST_CASE("MessagePack")
                 SECTION("-9263 (int 16)")
                 {
                     json const j = -9263;
-                    std::vector<uint8_t> const expected = {0xd1, 0xdb, 0xd1};
+                    std::vector<uint8_t> const expected = { 0xd1, 0xdb, 0xd1 };
 
                     const auto result = json::to_msgpack(j);
                     CHECK(result == expected);
@@ -451,8 +434,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xd1,
                             static_cast<uint8_t>((i >> 8) & 0xff),
                             static_cast<uint8_t>(i & 0xff),
@@ -476,13 +458,8 @@ TEST_CASE("MessagePack")
 
                 SECTION("-32769..-2147483648")
                 {
-                    std::vector<int32_t> const numbers
+                    std::vector<int32_t> const numbers{
-                    {
+                        -32769, -65536, -77777, -1048576, -2147483648LL,
-                        -32769,
-                            -65536,
-                            -77777,
-                            -1048576,
-                            -2147483648LL,
                     };
                     for (auto i : numbers)
                     {
@@ -495,8 +472,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xd2,
                             static_cast<uint8_t>((i >> 24) & 0xff),
                             static_cast<uint8_t>((i >> 16) & 0xff),
@@ -511,10 +487,8 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xd2);
-                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) + (static_cast<uint32_t>(result[2]) << 020) +
-                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) + static_cast<uint32_t>(result[4]);
-                                                  (static_cast<uint32_t>(result[3]) << 010) +
-                                                  static_cast<uint32_t>(result[4]);
                         CHECK(static_cast<std::int32_t>(restored) == i);
 
                         // roundtrip
@@ -525,8 +499,7 @@ TEST_CASE("MessagePack")
 
                 SECTION("-9223372036854775808..-2147483649 (int 64)")
                 {
-                    std::vector<int64_t> const numbers
+                    std::vector<int64_t> const numbers{
-                    {
                         (std::numeric_limits<int64_t>::min)(),
                         -2147483649LL,
                     };
@@ -541,8 +514,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_integer());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xd3,
                             static_cast<uint8_t>((i >> 070) & 0xff),
                             static_cast<uint8_t>((i >> 060) & 0xff),
@@ -561,14 +533,10 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xd3);
-                        int64_t const restored = (static_cast<int64_t>(result[1]) << 070) +
+                        int64_t const restored = (static_cast<int64_t>(result[1]) << 070) + (static_cast<int64_t>(result[2]) << 060) +
-                                                 (static_cast<int64_t>(result[2]) << 060) +
+                                                 (static_cast<int64_t>(result[3]) << 050) + (static_cast<int64_t>(result[4]) << 040) +
-                                                 (static_cast<int64_t>(result[3]) << 050) +
+                                                 (static_cast<int64_t>(result[5]) << 030) + (static_cast<int64_t>(result[6]) << 020) +
-                                                 (static_cast<int64_t>(result[4]) << 040) +
+                                                 (static_cast<int64_t>(result[7]) << 010) + static_cast<int64_t>(result[8]);
-                                                 (static_cast<int64_t>(result[5]) << 030) +
-                                                 (static_cast<int64_t>(result[6]) << 020) +
-                                                 (static_cast<int64_t>(result[7]) << 010) +
-                                                 static_cast<int64_t>(result[8]);
                         CHECK(restored == i);
 
                         // roundtrip
@@ -593,7 +561,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_unsigned());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected{static_cast<uint8_t>(i)};
+                        std::vector<uint8_t> const expected{ static_cast<uint8_t>(i) };
 
                         // compare result + size
                         const auto result = json::to_msgpack(j);
@@ -622,8 +590,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_unsigned());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcc,
                             static_cast<uint8_t>(i),
                         };
@@ -657,8 +624,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_unsigned());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcd,
                             static_cast<uint8_t>((i >> 8) & 0xff),
                             static_cast<uint8_t>(i & 0xff),
@@ -682,10 +648,7 @@ TEST_CASE("MessagePack")
 
                 SECTION("65536..4294967295 (uint 32)")
                 {
-                    for (const uint32_t i :
+                    for (const uint32_t i : { 65536u, 77777u, 1048576u, 4294967295u })
-                            {
-                                65536u, 77777u, 1048576u, 4294967295u
-                            })
                     {
                         CAPTURE(i)
 
@@ -696,8 +659,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_unsigned());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xce,
                             static_cast<uint8_t>((i >> 24) & 0xff),
                             static_cast<uint8_t>((i >> 16) & 0xff),
@@ -712,10 +674,8 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xce);
-                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) + (static_cast<uint32_t>(result[2]) << 020) +
-                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) + static_cast<uint32_t>(result[4]);
-                                                  (static_cast<uint32_t>(result[3]) << 010) +
-                                                  static_cast<uint32_t>(result[4]);
                         CHECK(restored == i);
 
                         // roundtrip
@@ -726,10 +686,7 @@ TEST_CASE("MessagePack")
 
                 SECTION("4294967296..18446744073709551615 (uint 64)")
                 {
-                    for (const uint64_t i :
+                    for (const uint64_t i : { 4294967296LU, 18446744073709551615LU })
-                            {
-                                4294967296LU, 18446744073709551615LU
-                            })
                     {
                         CAPTURE(i)
 
@@ -740,8 +697,7 @@ TEST_CASE("MessagePack")
                         CHECK(j.is_number_unsigned());
 
                         // create expected byte vector
-                        std::vector<uint8_t> const expected
+                        std::vector<uint8_t> const expected{
-                        {
                             0xcf,
                             static_cast<uint8_t>((i >> 070) & 0xff),
                             static_cast<uint8_t>((i >> 060) & 0xff),
@@ -760,14 +716,10 @@ TEST_CASE("MessagePack")
 
                         // check individual bytes
                         CHECK(result[0] == 0xcf);
-                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) + (static_cast<uint64_t>(result[2]) << 060) +
-                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) + (static_cast<uint64_t>(result[4]) << 040) +
-                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) + (static_cast<uint64_t>(result[6]) << 020) +
-                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) + static_cast<uint64_t>(result[8]);
-                                                  (static_cast<uint64_t>(result[5]) << 030) +
-                                                  (static_cast<uint64_t>(result[6]) << 020) +
-                                                  (static_cast<uint64_t>(result[7]) << 010) +
-                                                  static_cast<uint64_t>(result[8]);
                         CHECK(restored == i);
 
                         // roundtrip
@@ -783,10 +735,7 @@ TEST_CASE("MessagePack")
                 {
                     double const v = 3.1415925;
                     json const j = v;
-                    std::vector<uint8_t> const expected =
+                    std::vector<uint8_t> const expected = { 0xcb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc };
-                    {
-                        0xcb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
-                    };
                     const auto result = json::to_msgpack(j);
                     CHECK(result == expected);
 
@@ -800,10 +749,7 @@ TEST_CASE("MessagePack")
                 {
                     double const v = 1.0;
                     json const j = v;
-                    std::vector<uint8_t> const expected =
+                    std::vector<uint8_t> const expected = { 0xca, 0x3f, 0x80, 0x00, 0x00 };
-                    {
-                        0xca, 0x3f, 0x80, 0x00, 0x00
-                    };
                     const auto result = json::to_msgpack(j);
                     CHECK(result == expected);
 
@@ -817,10 +763,7 @@ TEST_CASE("MessagePack")
                 {
                     double const v = 128.1280059814453125;
                     json const j = v;
-                    std::vector<uint8_t> const expected =
+                    std::vector<uint8_t> const expected = { 0xca, 0x43, 0x00, 0x20, 0xc5 };
-                    {
-                        0xca, 0x43, 0x00, 0x20, 0xc5
-                    };
                     const auto result = json::to_msgpack(j);
                     CHECK(result == expected);
 
@@ -837,13 +780,8 @@ TEST_CASE("MessagePack")
             SECTION("N = 0..31")
             {
                 // explicitly enumerate the first byte for all 32 strings
-                const std::vector<uint8_t> first_bytes =
+                const std::vector<uint8_t> first_bytes = { 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
-                {
+                                                           0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf };
-                    0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8,
-                    0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1,
-                    0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba,
-                    0xbb, 0xbc, 0xbd, 0xbe, 0xbf
-                };
 
                 for (size_t N = 0; N < first_bytes.size(); ++N)
                 {
@@ -914,10 +852,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 256..65535")
             {
-                for (size_t N :
+                for (size_t N : { 256u, 999u, 1025u, 3333u, 2048u, 65535u })
-                        {
-                            256u, 999u, 1025u, 3333u, 2048u, 65535u
-                        })
                 {
                     CAPTURE(N)
 
@@ -947,10 +882,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 65536..4294967295")
             {
-                for (size_t N :
+                for (size_t N : { 65536u, 77777u, 1048576u })
-                        {
-                            65536u, 77777u, 1048576u
-                        })
                 {
                     CAPTURE(N)
 
@@ -986,7 +918,7 @@ TEST_CASE("MessagePack")
             SECTION("empty")
             {
                 json const j = json::array();
-                std::vector<uint8_t> const expected = {0x90};
+                std::vector<uint8_t> const expected = { 0x90 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -997,8 +929,8 @@ TEST_CASE("MessagePack")
 
             SECTION("[null]")
             {
-                json const j = {nullptr};
+                json const j = { nullptr };
-                std::vector<uint8_t> const expected = {0x91, 0xc0};
+                std::vector<uint8_t> const expected = { 0x91, 0xc0 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1010,7 +942,7 @@ TEST_CASE("MessagePack")
             SECTION("[1,2,3,4,5]")
             {
                 json const j = json::parse("[1,2,3,4,5]");
-                std::vector<uint8_t> const expected = {0x95, 0x01, 0x02, 0x03, 0x04, 0x05};
+                std::vector<uint8_t> const expected = { 0x95, 0x01, 0x02, 0x03, 0x04, 0x05 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1022,7 +954,7 @@ TEST_CASE("MessagePack")
             SECTION("[[[[]]]]")
             {
                 json const j = json::parse("[[[[]]]]");
-                std::vector<uint8_t> const expected = {0x91, 0x91, 0x91, 0x90};
+                std::vector<uint8_t> const expected = { 0x91, 0x91, 0x91, 0x90 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1076,7 +1008,7 @@ TEST_CASE("MessagePack")
             SECTION("empty")
             {
                 json const j = json::object();
-                std::vector<uint8_t> const expected = {0x80};
+                std::vector<uint8_t> const expected = { 0x80 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1087,8 +1019,8 @@ TEST_CASE("MessagePack")
 
             SECTION("{\"\":null}")
             {
-                json const j = {{"", nullptr}};
+                json const j = { { "", nullptr } };
-                std::vector<uint8_t> const expected = {0x81, 0xa0, 0xc0};
+                std::vector<uint8_t> const expected = { 0x81, 0xa0, 0xc0 };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1100,10 +1032,7 @@ TEST_CASE("MessagePack")
             SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
             {
                 json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
-                std::vector<uint8_t> const expected =
+                std::vector<uint8_t> const expected = { 0x81, 0xa1, 0x61, 0x81, 0xa1, 0x62, 0x81, 0xa1, 0x63, 0x80 };
-                {
-                    0x81, 0xa1, 0x61, 0x81, 0xa1, 0x62, 0x81, 0xa1, 0x63, 0x80
-                };
                 const auto result = json::to_msgpack(j);
                 CHECK(result == expected);
 
@@ -1244,10 +1173,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 256..65535")
             {
-                for (std::size_t N :
+                for (std::size_t N : { 256u, 999u, 1025u, 3333u, 2048u, 65535u })
-                        {
-                            256u, 999u, 1025u, 3333u, 2048u, 65535u
-                        })
                 {
                     CAPTURE(N)
 
@@ -1280,10 +1206,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 65536..4294967295")
             {
-                for (std::size_t N :
+                for (std::size_t N : { 65536u, 77777u, 1048576u })
-                        {
-                            65536u, 77777u, 1048576u
-                        })
                 {
                     CAPTURE(N)
 
@@ -1356,10 +1279,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 256..65535")
             {
-                for (std::size_t N :
+                for (std::size_t N : { 256u, 999u, 1025u, 3333u, 2048u, 65535u })
-                        {
-                            256u, 999u, 1025u, 3333u, 2048u, 65535u
-                        })
                 {
                     CAPTURE(N)
 
@@ -1389,10 +1309,7 @@ TEST_CASE("MessagePack")
 
             SECTION("N = 65536..4294967295")
             {
-                for (std::size_t N :
+                for (std::size_t N : { 65536u, 77777u, 1048576u })
-                        {
-                            65536u, 77777u, 1048576u
-                        })
                 {
                     CAPTURE(N)
 
@@ -1426,7 +1343,7 @@ TEST_CASE("MessagePack")
 
     SECTION("from float32")
     {
-        auto given = std::vector<uint8_t>({0xca, 0x41, 0xc8, 0x00, 0x01});
+        auto given = std::vector<uint8_t>({ 0xca, 0x41, 0xc8, 0x00, 0x01 });
         json const j = json::from_msgpack(given);
         CHECK(j.get<double>() == Approx(25.0000019073486));
     }
@@ -1436,7 +1353,10 @@ TEST_CASE("MessagePack")
         SECTION("empty byte vector")
         {
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>()), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>()),
+                "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input",
+                json::parse_error&);
             CHECK(json::from_msgpack(std::vector<uint8_t>(), true, false).is_discarded());
         }
 
@@ -1444,68 +1364,108 @@ TEST_CASE("MessagePack")
         {
             json _;
 
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x87})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0x87 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcc})),
+                "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcc })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcd })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcd, 0x00 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xce })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00, 0x00 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00, 0x00, 0x00 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
+                "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x92, 0x01})),
+                "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+                json::parse_error&);
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xa1, 0x61})),
+            CHECK_THROWS_WITH_AS(
-                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00 })),
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02})),
+                "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input",
-                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack binary: unexpected end of input", json::parse_error&);
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 })),
+                "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing MessagePack number: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xa5, 0x68, 0x65 })),
+                "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack string: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0x92, 0x01 })),
+                "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack value: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0x81, 0xa1, 0x61 })),
+                "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack value: unexpected end of input",
+                json::parse_error&);
+            CHECK_THROWS_WITH_AS(
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0xc4, 0x02 })),
+                "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack binary: unexpected end of input",
+                json::parse_error&);
 
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0x87}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0x87 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcc}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcc }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcd }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcd, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xce }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xce, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xa5, 0x68, 0x65 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0x92, 0x01}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0x92, 0x01 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xA1, 0x61}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0x81, 0xA1, 0x61 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xc4, 0x02 }), true, false).is_discarded());
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0xc4 }), true, false).is_discarded());
         }
 
         SECTION("unsupported bytes")
@@ -1513,20 +1473,19 @@ TEST_CASE("MessagePack")
             SECTION("concrete examples")
             {
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc1})), "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing MessagePack value: invalid byte: 0xC1", json::parse_error&);
+                CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({ 0xc1 })),
+                                     "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing MessagePack value: invalid byte: 0xC1",
+                                     json::parse_error&);
             }
 
             SECTION("all unsupported bytes")
             {
-                for (auto byte :
+                for (auto byte : { // never used
-                        {
+                                   0xc1 })
-                            // never used
-                            0xc1
-                        })
                 {
                     json _;
-                    CHECK_THROWS_AS(_ = json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)})), json::parse_error&);
+                    CHECK_THROWS_AS(_ = json::from_msgpack(std::vector<uint8_t>({ static_cast<uint8_t>(byte) })), json::parse_error&);
-                    CHECK(json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)}), true, false).is_discarded());
+                    CHECK(json::from_msgpack(std::vector<uint8_t>({ static_cast<uint8_t>(byte) }), true, false).is_discarded());
                 }
             }
         }
@@ -1534,13 +1493,16 @@ TEST_CASE("MessagePack")
         SECTION("invalid string in map")
         {
             json _;
-            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF", json::parse_error&);
+            CHECK_THROWS_WITH_AS(
-            CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01}), true, false).is_discarded());
+                _ = json::from_msgpack(std::vector<uint8_t>({ 0x81, 0xff, 0x01 })),
+                "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF",
+                json::parse_error&);
+            CHECK(json::from_msgpack(std::vector<uint8_t>({ 0x81, 0xff, 0x01 }), true, false).is_discarded());
         }
 
         SECTION("strict mode")
         {
-            std::vector<uint8_t> const vec = {0xc0, 0xc0};
+            std::vector<uint8_t> const vec = { 0xc0, 0xc0 };
             SECTION("non-strict mode")
             {
                 const auto result = json::from_msgpack(vec, false);
@@ -1550,7 +1512,10 @@ TEST_CASE("MessagePack")
             SECTION("strict mode")
             {
                 json _;
-                CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack value: expected end of input; last byte: 0xC0", json::parse_error&);
+                CHECK_THROWS_WITH_AS(
+                    _ = json::from_msgpack(vec),
+                    "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack value: expected end of input; last byte: 0xC0",
+                    json::parse_error&);
                 CHECK(json::from_msgpack(vec, true, false).is_discarded());
             }
         }
@@ -1560,21 +1525,21 @@ TEST_CASE("MessagePack")
     {
         SECTION("start_array(len)")
         {
-            std::vector<uint8_t> const v = {0x93, 0x01, 0x02, 0x03};
+            std::vector<uint8_t> const v = { 0x93, 0x01, 0x02, 0x03 };
             SaxCountdown scp(0);
             CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
         }
 
         SECTION("start_object(len)")
         {
-            std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
+            std::vector<uint8_t> const v = { 0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2 };
             SaxCountdown scp(0);
             CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
         }
 
         SECTION("key()")
         {
-            std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
+            std::vector<uint8_t> const v = { 0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2 };
             SaxCountdown scp(1);
             CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
         }
@@ -1646,9 +1611,7 @@ TEST_CASE("MessagePack roundtrips" * doctest::skip())
         exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json");
         exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json");
 
-        for (std::string filename :
+        for (std::string filename : { TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
-                {
-                    TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
                                       TEST_DATA_DIRECTORY "/json.org/1.json",
                                       TEST_DATA_DIRECTORY "/json.org/2.json",
                                       TEST_DATA_DIRECTORY "/json.org/3.json",
@@ -1792,8 +1755,7 @@ TEST_CASE("MessagePack roundtrips" * doctest::skip())
                                       TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
                                       TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
                                       TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
-                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
+                                      TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json" })
-                })
         {
             CAPTURE(filename)
 
@@ -1836,7 +1798,7 @@ TEST_CASE("MessagePack roundtrips" * doctest::skip())
                 // parse MessagePack file
                 auto packed = utils::read_binary_file(filename + ".msgpack");
                 json j2;
-                CHECK_NOTHROW(j2 = json::from_msgpack({packed.data(), packed.size()}));
+                CHECK_NOTHROW(j2 = json::from_msgpack({ packed.data(), packed.size() }));
 
                 // compare parsed JSON values
                 CHECK(j1 == j2);

tests/src/unit-no-mem-leak-on-adl-serialize.cpp

@@ -8,9 +8,9 @@
 
 #include "doctest_compatibility.h"
 
-#include <nlohmann/json.hpp>
 #include <exception>
 #include <iostream>
+#include <nlohmann/json.hpp>
 
 struct Foo
 {
@@ -20,7 +20,7 @@ struct Foo
 
 namespace nlohmann
 {
-template <>
+template<>
 struct adl_serializer<Foo>
 {
     static void to_json(json& j, Foo const& f)
@@ -48,7 +48,7 @@ TEST_CASE("check_for_mem_leak_on_adl_to_json-1")
 {
     try
     {
-        const nlohmann::json j = Foo {1, 0};
+        const nlohmann::json j = Foo{ 1, 0 };
         std::cout << j.dump() << "\n";
     }
     catch (...)  // NOLINT(bugprone-empty-catch)
@@ -61,7 +61,7 @@ TEST_CASE("check_for_mem_leak_on_adl_to_json-2")
 {
     try
     {
-        const nlohmann::json j = Foo {1, 1};
+        const nlohmann::json j = Foo{ 1, 1 };
         std::cout << j.dump() << "\n";
     }
     catch (...)  // NOLINT(bugprone-empty-catch)
@@ -74,7 +74,7 @@ TEST_CASE("check_for_mem_leak_on_adl_to_json-2")
 {
     try
     {
-        const nlohmann::json j = Foo {1, 2};
+        const nlohmann::json j = Foo{ 1, 2 };
         std::cout << j.dump() << "\n";
     }
     catch (...)  // NOLINT(bugprone-empty-catch)
@@ -82,5 +82,3 @@ TEST_CASE("check_for_mem_leak_on_adl_to_json-2")
         // just ignore the exception in this POC
     }
 }
-
-

tests/src/unit-noexcept.cpp

@@ -18,10 +18,14 @@ using nlohmann::json;
 
 namespace
 {
-enum test {};
+enum test
+{
+};
 
-struct pod {};
+struct pod
-struct pod_bis {};
+{};
+struct pod_bis
+{};
 
 void to_json(json& /*unused*/, pod /*unused*/) noexcept;
 void to_json(json& /*unused*/, pod_bis /*unused*/);
@@ -50,10 +54,10 @@ static_assert(noexcept(json(pod{})), "");
 TEST_CASE("noexcept")
 {
     // silence -Wunneeded-internal-declaration errors
-    static_cast<void>(static_cast<void(*)(json&, pod)>(&to_json));
+    static_cast<void>(static_cast<void (*)(json&, pod)>(&to_json));
-    static_cast<void>(static_cast<void(*)(json&, pod_bis)>(&to_json));
+    static_cast<void>(static_cast<void (*)(json&, pod_bis)>(&to_json));
-    static_cast<void>(static_cast<void(*)(const json&, pod)>(&from_json));
+    static_cast<void>(static_cast<void (*)(const json&, pod)>(&from_json));
-    static_cast<void>(static_cast<void(*)(const json&, pod_bis)>(&from_json));
+    static_cast<void>(static_cast<void (*)(const json&, pod_bis)>(&from_json));
 
     SECTION("nothrow-copy-constructible exceptions")
     {

tests/src/unit-ordered_json.cpp

@@ -45,11 +45,11 @@ TEST_CASE("ordered_json")
     CHECK(oj.dump() == "{\"element3\":3,\"element2\":2}");
 
     // There are no dup keys cause constructor calls emplace...
-    json const multi {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}};
+    json const multi{ { "z", 1 }, { "m", 2 }, { "m", 3 }, { "y", 4 }, { "m", 5 } };
     CHECK(multi.size() == 3);
     CHECK(multi.dump() == "{\"m\":2,\"y\":4,\"z\":1}");
 
-    ordered_json multi_ordered {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}};
+    ordered_json multi_ordered{ { "z", 1 }, { "m", 2 }, { "m", 3 }, { "y", 4 }, { "m", 5 } };
     CHECK(multi_ordered.size() == 3);
     CHECK(multi_ordered.dump() == "{\"z\":1,\"m\":2,\"y\":4}");
     CHECK(multi_ordered.erase("m") == 1);
@@ -57,15 +57,15 @@ TEST_CASE("ordered_json")
 
     // Ranged insert test.
     // It seems that values shouldn't be overwritten. Only new values are added
-    json j1 {{"c", 1}, {"b", 2}, {"a", 3}};
+    json j1{ { "c", 1 }, { "b", 2 }, { "a", 3 } };
-    const json j2 {{"c", 77}, {"d", 42}, {"a", 4}};
+    const json j2{ { "c", 77 }, { "d", 42 }, { "a", 4 } };
-    j1.insert( j2.cbegin(), j2.cend() );
+    j1.insert(j2.cbegin(), j2.cend());
     CHECK(j1.size() == 4);
     CHECK(j1.dump() == "{\"a\":3,\"b\":2,\"c\":1,\"d\":42}");
 
-    ordered_json oj1 {{"c", 1}, {"b", 2}, {"a", 3}};
+    ordered_json oj1{ { "c", 1 }, { "b", 2 }, { "a", 3 } };
-    const ordered_json oj2 {{"c", 77}, {"d", 42}, {"a", 4}};
+    const ordered_json oj2{ { "c", 77 }, { "d", 42 }, { "a", 4 } };
-    oj1.insert( oj2.cbegin(), oj2.cend() );
+    oj1.insert(oj2.cbegin(), oj2.cend());
     CHECK(oj1.size() == 4);
     CHECK(oj1.dump() == "{\"c\":1,\"b\":2,\"a\":3,\"d\":42}");
 }