Fix CI: clang-tidy and JSON_NOEXCEPTION in the #3989 changes

ci_clang_tidy flagged nested conditional operators in the BON8 skip code and in remove_incomplete_utf8_sequence() (readability-avoid-nested-conditional-operator), and two branches with the same body in recover_string() (bugprone-branch-clone). Use if chains instead of the nested conditionals and merge the two branches into one condition; the short-circuit order is unchanged. ci_test_noexceptions aborted in the #3989 regression test: it compares the first recovered error with the message of the exception that from_cbor() and friends throw, and under JSON_NOEXCEPTION that call aborts instead of throwing. Guard binary_error_message() and its uses with #if !defined(JSON_NOEXCEPTION), as other tests in the suite do. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Fix CI: no global std::string in the #3989 regression test
2026-09-29 19:20:30 +00:00 · 2026-09-29 16:42:57 +02:00 · 2026-09-29 09:27:46 +02:00 · 2026-09-29 03:31:07 +02:00 · 2026-09-29 03:30:39 +02:00 · 2026-09-28 22:22:25 +02:00
179 changed files with 7029 additions and 12852 deletions
@@ -45,23 +45,6 @@ labels:
 - label: "aspect: binary formats"
  title: "(?i)(bson|cbor|msgpack|messagepack|ubjson|bjdata|bon8|binary format)"

- label: "aspect: json_view"
-  files:
-    - "include/nlohmann/json_view\\.hpp"
-    - "include/nlohmann/detail/view/.*"
-    - "single_include/nlohmann/json_view\\.hpp"
-    - "tests/src/unit-json_view.*"
-    - "tests/src/fuzzer-parse_json_view\\.cpp"
-    - "tools/amalgamate/config_json_view\\.json"
-    - "docs/mkdocs/docs/features/json_view\\.md"
-    - "docs/mkdocs/docs/api/basic_json_(document|view)/.*"
-    - "docs/mkdocs/docs/api/(ordered_)?json_(document|view)\\.md"
-    - "docs/mkdocs/docs/examples/(basic_json_(document|view)__|(ordered_)?json_(document|view)).*"
-    - "tests/benchmarks/src/benchmarks_view\\.cpp"
-
- label: "aspect: json_view"
-  title: "(?i)(json_view|json_document|zero-copy)"
-
 - label: "python"
  files:
    - "\\.py$"
@@ -67,13 +67,12 @@ jobs:

          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 .
-          python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json_view.json -s .

          # the header list of the Bazel "json" target must match the files in include/
          cmake -P cmake/scripts/gen_bazel_build_file.cmake

          ${{ github.workspace }}/venv/bin/astyle --project=tools/astyle/.astylerc --suffix=none --quiet \
-            $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json_fwd.hpp $INCLUDE_DIR/json_view.hpp
+            $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json_fwd.hpp

          # fail loudly if a directory is renamed or removed: find would only warn
          # about the missing path and silently drop its files from the check
@@ -20,9 +20,7 @@ cc_library(
    hdrs = [
        "include/nlohmann/adl_serializer.hpp",
        "include/nlohmann/byte_container_with_subtype.hpp",
-        "include/nlohmann/detail/abi_config.hpp",
        "include/nlohmann/detail/abi_macros.hpp",
-        "include/nlohmann/detail/bit_ops.hpp",
        "include/nlohmann/detail/conversions/from_json.hpp",
        "include/nlohmann/detail/conversions/to_chars.hpp",
        "include/nlohmann/detail/conversions/to_json.hpp",
@@ -35,7 +33,6 @@ cc_library(
        "include/nlohmann/detail/input/number_parse.hpp",
        "include/nlohmann/detail/input/parser.hpp",
        "include/nlohmann/detail/input/position_t.hpp",
-        "include/nlohmann/detail/input/pow5_table.hpp",
        "include/nlohmann/detail/input/string_scan.hpp",
        "include/nlohmann/detail/iterators/internal_iterator.hpp",
        "include/nlohmann/detail/iterators/iter_impl.hpp",
@@ -66,20 +63,8 @@ cc_library(
        "include/nlohmann/detail/string_escape.hpp",
        "include/nlohmann/detail/string_utils.hpp",
        "include/nlohmann/detail/value_t.hpp",
-        "include/nlohmann/detail/view/builder.hpp",
-        "include/nlohmann/detail/view/document_data.hpp",
-        "include/nlohmann/detail/view/errors.hpp",
-        "include/nlohmann/detail/view/input.hpp",
-        "include/nlohmann/detail/view/macro_scope.hpp",
-        "include/nlohmann/detail/view/macro_unscope.hpp",
-        "include/nlohmann/detail/view/materialize.hpp",
-        "include/nlohmann/detail/view/node.hpp",
-        "include/nlohmann/detail/view/number.hpp",
-        "include/nlohmann/detail/view/scan.hpp",
-        "include/nlohmann/detail/view/string_ref.hpp",
        "include/nlohmann/json.hpp",
        "include/nlohmann/json_fwd.hpp",
-        "include/nlohmann/json_view.hpp",
        "include/nlohmann/ordered_map.hpp",
        "include/nlohmann/thirdparty/hedley/hedley.hpp",
        "include/nlohmann/thirdparty/hedley/hedley_undef.hpp",
@@ -92,7 +77,6 @@ cc_library(
    name = "singleheader-json",
    hdrs = [
        "single_include/nlohmann/json.hpp",
-        "single_include/nlohmann/json_view.hpp",
    ],
    includes = ["single_include"],
    visibility = ["//visibility:public"],
@@ -21,7 +21,6 @@ TESTS_SRCS=$(shell find tests -type f \( -name '*.hpp' -o -name '*.cpp' -o -name
 # the single headers (amalgamated from the source files)
 AMALGAMATED_FILE=single_include/nlohmann/json.hpp
 AMALGAMATED_FWD_FILE=single_include/nlohmann/json_fwd.hpp
-AMALGAMATED_VIEW_FILE=single_include/nlohmann/json_view.hpp


 ##########################################################################
@@ -30,7 +29,7 @@ AMALGAMATED_VIEW_FILE=single_include/nlohmann/json_view.hpp

 # main target
 all:
-	@echo "amalgamate - amalgamate files single_include/nlohmann/json{,_fwd,_view}.hpp from the include/nlohmann sources"
+	@echo "amalgamate - amalgamate files single_include/nlohmann/json{,_fwd}.hpp from the include/nlohmann sources"
 	@echo "BUILD.bazel - regenerate the Bazel BUILD file from the include/nlohmann sources"
 	@echo "ChangeLog.md - generate ChangeLog file"
 	@echo "check-amalgamation - check whether sources have been amalgamated and BUILD.bazel is up to date"
@@ -40,7 +39,6 @@ all:
 	@echo "fuzz_testing_bon8 - prepare fuzz testing of the BON8 parser"
 	@echo "fuzz_testing_bson - prepare fuzz testing of the BSON parser"
 	@echo "fuzz_testing_cbor - prepare fuzz testing of the CBOR parser"
-	@echo "fuzz_testing_json_view - prepare fuzz testing of the json_document/json_view parser"
 	@echo "fuzz_testing_msgpack - prepare fuzz testing of the MessagePack parser"
 	@echo "fuzz_testing_ubjson - prepare fuzz testing of the UBJSON parser"
 	@echo "pretty - beautify code with Artistic Style"
@@ -98,14 +96,6 @@ fuzz_testing_cbor:
 	find tests/data -size -5k -name *.cbor | xargs -I{} cp "{}" fuzz-testing/testcases
 	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"

-fuzz_testing_json_view:
-	rm -fr fuzz-testing
-	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
-	$(MAKE) parse_json_view_fuzzer -C tests CXX=afl-clang++
-	mv tests/parse_json_view_fuzzer fuzz-testing/fuzzer
-	find tests/data/json_tests -size -5k -name *json | xargs -I{} cp "{}" fuzz-testing/testcases
-	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
-
 fuzz_testing_msgpack:
 	rm -fr fuzz-testing
 	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
@@ -164,14 +154,14 @@ install_astyle:

 # call the Artistic Style pretty printer on all source files
 pretty: install_astyle
-	$(ASTYLE) --project=tools/astyle/.astylerc $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_VIEW_FILE) docs/mkdocs/docs/examples/*.cpp
+	$(ASTYLE) --project=tools/astyle/.astylerc $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) docs/mkdocs/docs/examples/*.cpp

 # call the Clang-Format on all source files
 pretty_format:
 	for FILE in $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) docs/mkdocs/docs/examples/*.cpp; do echo $$FILE; clang-format -i $$FILE; done

 # create single header files and pretty print
-amalgamate: $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_VIEW_FILE)
+amalgamate: $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE)
 	$(MAKE) pretty

 # call the amalgamation tool for json.hpp
@@ -182,23 +172,16 @@ $(AMALGAMATED_FILE): $(SRCS)
 $(AMALGAMATED_FWD_FILE): $(SRCS)
 	tools/amalgamate/amalgamate.py -c tools/amalgamate/config_json_fwd.json -s . --verbose=yes

-# call the amalgamation tool for json_view.hpp (keeps including json.hpp)
-$(AMALGAMATED_VIEW_FILE): $(SRCS)
-	tools/amalgamate/amalgamate.py -c tools/amalgamate/config_json_view.json -s . --verbose=yes
-
 # check if file single_include/nlohmann/json.hpp has been amalgamated from the nlohmann sources
 # Note: this target is called by Travis
 check-amalgamation:
 	@mv $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~
 	@mv $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~
-	@mv $(AMALGAMATED_VIEW_FILE) $(AMALGAMATED_VIEW_FILE)~
 	@$(MAKE) amalgamate
 	@diff $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE) ; false)
 	@diff $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE) ; false)
-	@diff $(AMALGAMATED_VIEW_FILE) $(AMALGAMATED_VIEW_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_VIEW_FILE)~ $(AMALGAMATED_VIEW_FILE) ; false)
 	@mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE)
 	@mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE)
-	@mv $(AMALGAMATED_VIEW_FILE)~ $(AMALGAMATED_VIEW_FILE)
 	@mv BUILD.bazel BUILD.bazel~
 	@$(MAKE) BUILD.bazel
 	@diff BUILD.bazel BUILD.bazel~ || (echo "===================================================================\n  BUILD.bazel is out of date! Please run 'make BUILD.bazel'.\n===================================================================" ; mv BUILD.bazel~ BUILD.bazel ; false)
@@ -239,7 +222,7 @@ json.tar.xz:
 # We use `-X` to make the resulting ZIP file reproducible, see
 # <https://content.pivotal.io/blog/barriers-to-deterministic-reproducible-zip-files>.
 include.zip: BUILD.bazel
-	zip -9 --recurse-paths -X include.zip $(SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_VIEW_FILE) BUILD.bazel MODULE.bazel meson.build LICENSE.MIT
+	zip -9 --recurse-paths -X include.zip $(SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) BUILD.bazel MODULE.bazel meson.build LICENSE.MIT

 # Create the files for a release and add signatures and hashes.
 release: include.zip json.tar.xz
@@ -248,13 +231,11 @@ release: include.zip json.tar.xz
 	gpg --armor --detach-sig include.zip
 	gpg --armor --detach-sig $(AMALGAMATED_FILE)
 	gpg --armor --detach-sig $(AMALGAMATED_FWD_FILE)
-	gpg --armor --detach-sig $(AMALGAMATED_VIEW_FILE)
 	gpg --armor --detach-sig json.tar.xz
 	cp $(AMALGAMATED_FILE) release_files
 	cp $(AMALGAMATED_FWD_FILE) release_files
-	cp $(AMALGAMATED_VIEW_FILE) release_files
-	mv $(AMALGAMATED_FILE).asc $(AMALGAMATED_FWD_FILE).asc $(AMALGAMATED_VIEW_FILE).asc json.tar.xz json.tar.xz.asc include.zip include.zip.asc release_files
-	cd release_files ; shasum -a 256 json.hpp json_view.hpp include.zip json.tar.xz > hashes.txt
+	mv $(AMALGAMATED_FILE).asc $(AMALGAMATED_FWD_FILE).asc json.tar.xz json.tar.xz.asc include.zip include.zip.asc release_files
+	cd release_files ; shasum -a 256 json.hpp include.zip json.tar.xz > hashes.txt


 ##########################################################################
@@ -496,7 +496,7 @@ bool key(string_t& val);
 bool parse_error(std::size_t position, const std::string& last_token, const detail::exception& ex);
 ```

-The return value of each function determines whether parsing should proceed.
+The return value of each function determines whether parsing should proceed. For `parse_error`, returning `true` [recovers from the error](https://json.nlohmann.me/features/parsing/error_recovery/): the parser repairs the input and continues.

 To implement your own SAX handler, proceed as follows:

@@ -504,7 +504,7 @@ To implement your own SAX handler, proceed as follows:
 2. Create an object of your SAX interface class, e.g. `my_sax`.
 3. Call `bool json::sax_parse(input, &my_sax)`; where the first parameter can be any input like a string or an input stream and the second parameter is a pointer to your SAX interface.

-Note the `sax_parse` function only returns a `bool` indicating the result of the last executed SAX event. It does not return a  `json` value - it is up to you to decide what to do with the SAX events. Furthermore, no exceptions are thrown in case of a parse error -- it is up to you what to do with the exception object passed to your `parse_error` implementation. Internally, the SAX interface is used for the DOM parser (class `json_sax_dom_parser`) as well as the acceptor (`json_sax_acceptor`), see file [`json_sax.hpp`](https://github.com/nlohmann/json/blob/develop/include/nlohmann/detail/input/json_sax.hpp).
+Note the `sax_parse` function only returns a `bool` indicating whether the input was parsed without errors and no SAX event returned `false`. It does not return a  `json` value - it is up to you to decide what to do with the SAX events. Furthermore, no exceptions are thrown in case of a parse error -- it is up to you what to do with the exception object passed to your `parse_error` implementation. Internally, the SAX interface is used for the DOM parser (class `json_sax_dom_parser`) as well as the acceptor (`json_sax_acceptor`), see file [`json_sax.hpp`](https://github.com/nlohmann/json/blob/develop/include/nlohmann/detail/input/json_sax.hpp).

 ### STL-like access

@@ -1189,14 +1189,6 @@ binary.set_subtype(0x10);
 auto cbor = json::to_msgpack(j); // 0xD5 (fixext2), 0x10, 0xCA, 0xFE
 ```

-### Zero-copy views
-
-Header `<nlohmann/json_view.hpp>` adds `json_document`/`json_view`, a read-only, non-owning way to look at a parsed
-JSON text: parsing builds a flat index (16 bytes per value) instead of a tree, strings and numbers stay in the source
-text, and `materialize()` builds a `json` value for a subtree only when you actually need one. See
-[Zero-copy JSON views](https://json.nlohmann.me/features/json_view/) for the details, including which inputs are
-borrowed and which are copied.
-
 ## Customers

 The library is used in multiple projects, applications, operating systems, etc. The list below is not exhaustive, but the result of an internet search. If you know further customers of the library, please let me know, see [contact](#contact).
@@ -1403,8 +1395,6 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
 - The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
 - The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
 - The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
- The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
- The view's parser (`<nlohmann/json_view.hpp>`) contains techniques and code adapted from [yyjson](https://github.com/ibireme/yyjson) by YaoYuan, which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above): table-driven decoding of `\u` escapes and fixed-offset unrolled checks.

 <img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">

@@ -373,10 +373,9 @@ file(GLOB_RECURSE INDENT_FILES
 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~ ${include_dir}/json_view.hpp~
+    COMMAND rm -fr ${include_dir}/json.hpp~ ${include_dir}/json_fwd.hpp~
    COMMAND cp ${include_dir}/json.hpp ${include_dir}/json.hpp~
    COMMAND cp ${include_dir}/json_fwd.hpp ${include_dir}/json_fwd.hpp~
-    COMMAND cp ${include_dir}/json_view.hpp ${include_dir}/json_view.hpp~

    COMMAND ${Python3_EXECUTABLE} -mvenv venv_astyle
    COMMAND venv_astyle/bin/pip3 --quiet install -r ${CMAKE_SOURCE_DIR}/tools/astyle/requirements.txt
@@ -384,12 +383,10 @@ add_custom_target(ci_test_amalgamation

    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 ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json_view.json -s .
-    COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=none ${include_dir}/json.hpp ${include_dir}/json_fwd.hpp ${include_dir}/json_view.hpp
+    COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=none ${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 diff ${include_dir}/json_view.hpp~ ${include_dir}/json_view.hpp

    COMMAND venv_astyle/bin/astyle --project=tools/astyle/.astylerc --suffix=orig ${INDENT_FILES}
    COMMAND for FILE in `find . -name '*.orig'`\; do false \; done
@@ -48,7 +48,6 @@ cc_library(
    name = "singleheader-json",
    hdrs = [
        "single_include/nlohmann/json.hpp",
-        "single_include/nlohmann/json_view.hpp",
    ],
    includes = ["single_include"],
    visibility = ["//visibility:public"],
@@ -128,43 +128,7 @@ INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_ubjson', 'Func
 INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value', 'Method', 'api/basic_json/value/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value_t', 'Enum', 'api/basic_json/value_t/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::~basic_json', 'Method', 'api/basic_json/~basic_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document', 'Class', 'api/basic_json_document/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::basic_json_document', 'Constructor', 'api/basic_json_document/basic_json_document/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::accept', 'Function', 'api/basic_json_document/accept/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::is_discarded', 'Method', 'api/basic_json_document/is_discarded/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::memory_usage', 'Method', 'api/basic_json_document/memory_usage/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::node_count', 'Method', 'api/basic_json_document/node_count/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::owns_source', 'Method', 'api/basic_json_document/owns_source/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::parse', 'Function', 'api/basic_json_document/parse/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::parse_copy', 'Function', 'api/basic_json_document/parse_copy/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::read', 'Method', 'api/basic_json_document/read/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::root', 'Method', 'api/basic_json_document/root/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::shrink_to_fit', 'Method', 'api/basic_json_document/shrink_to_fit/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_document::source', 'Method', 'api/basic_json_document/source/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view', 'Class', 'api/basic_json_view/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::basic_json_view', 'Constructor', 'api/basic_json_view/basic_json_view/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::empty', 'Method', 'api/basic_json_view/empty/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_array', 'Method', 'api/basic_json_view/is_array/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_binary', 'Method', 'api/basic_json_view/is_binary/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_boolean', 'Method', 'api/basic_json_view/is_boolean/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_discarded', 'Method', 'api/basic_json_view/is_discarded/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_null', 'Method', 'api/basic_json_view/is_null/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_number', 'Method', 'api/basic_json_view/is_number/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_number_float', 'Method', 'api/basic_json_view/is_number_float/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_number_integer', 'Method', 'api/basic_json_view/is_number_integer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_number_unsigned', 'Method', 'api/basic_json_view/is_number_unsigned/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_object', 'Method', 'api/basic_json_view/is_object/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_primitive', 'Method', 'api/basic_json_view/is_primitive/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_string', 'Method', 'api/basic_json_view/is_string/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::is_structured', 'Method', 'api/basic_json_view/is_structured/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::materialize', 'Method', 'api/basic_json_view/materialize/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::operator bool', 'Method', 'api/basic_json_view/operator_bool/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::size', 'Method', 'api/basic_json_view/size/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::source_offset', 'Method', 'api/basic_json_view/source_offset/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('basic_json_view::type', 'Method', 'api/basic_json_view/type/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('json', 'Class', 'api/json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_document', 'Class', 'api/json_document/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('json_view', 'Class', 'api/json_view/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer', 'Class', 'api/json_pointer/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::back', 'Method', 'api/json_pointer/back/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::empty', 'Method', 'api/json_pointer/empty/index.html');
@@ -198,8 +162,6 @@ INSERT INTO searchIndex(name, type, path) VALUES ('operator""_json_pointer', 'Li
 INSERT INTO searchIndex(name, type, path) VALUES ('operator<<', 'Operator', 'api/operator_ltlt/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('operator>>', 'Operator', 'api/operator_gtgt/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('ordered_json', 'Class', 'api/ordered_json/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('ordered_json_document', 'Class', 'api/ordered_json_document/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('ordered_json_view', 'Class', 'api/ordered_json_view/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('ordered_map', 'Class', 'api/ordered_map/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('std::hash<basic_json>', 'Class', 'api/basic_json/std_hash/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('std::swap<basic_json>', 'Function', 'api/basic_json/std_swap/index.html');
@@ -229,7 +191,6 @@ INSERT INTO searchIndex(name, type, path) VALUES ('Iterators', 'Guide', 'feature
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON Merge Patch', 'Guide', 'features/merge_patch/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON Patch and Diff', 'Guide', 'features/json_patch/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('JSON Pointer', 'Guide', 'features/json_pointer/index.html');
-INSERT INTO searchIndex(name, type, path) VALUES ('Zero-copy JSON views', 'Guide', 'features/json_view/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('nlohmann Namespace', 'Guide', 'features/namespace/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('Types', 'Guide', 'features/types/index.html');
 INSERT INTO searchIndex(name, type, path) VALUES ('Types: Number Handling', 'Guide', 'features/types/number_handling/index.html');
@@ -60,10 +60,6 @@ itself is empty which is `#!cpp false` in the case of a string.
    --8<-- "examples/empty.output"
    ```

-## See also
-
- [basic_json_view::empty](../basic_json_view/empty.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_array.output"
    ```

-## See also
-
- [basic_json_view::is_array](../basic_json_view/is_array.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_binary.output"
    ```

-## See also
-
- [basic_json_view::is_binary](../basic_json_view/is_binary.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 3.8.0.
@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_boolean.output"
    ```

-## See also
-
- [basic_json_view::is_boolean](../basic_json_view/is_boolean.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -69,11 +69,6 @@ with `allow_exceptions` set to `#!cpp false`: a parse error then yields a discar
    --8<-- "examples/is_discarded.output"
    ```

-## See also
-
- [basic_json_view::is_discarded](../basic_json_view/is_discarded.md) - the corresponding check on a zero-copy view,
-  which is `#!cpp true` if the view refers to no value
-
 ## Version history

 - Added in version 1.0.0.
@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_null.output"
    ```

-## See also
-
- [basic_json_view::is_null](../basic_json_view/is_null.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -49,7 +49,6 @@ constexpr bool is_number() const noexcept
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
- [basic_json_view::is_number](../basic_json_view/is_number.md) - the same check on a zero-copy view

 ## Version history

@@ -40,7 +40,6 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
- [basic_json_view::is_number_float](../basic_json_view/is_number_float.md) - the same check on a zero-copy view

 ## Version history

@@ -40,7 +40,6 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
- [basic_json_view::is_number_integer](../basic_json_view/is_number_integer.md) - the same check on a zero-copy view

 ## Version history

@@ -40,7 +40,6 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
- [basic_json_view::is_number_unsigned](../basic_json_view/is_number_unsigned.md) - the same check on a zero-copy view

 ## Version history

@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_object.output"
    ```

-## See also
-
- [basic_json_view::is_object](../basic_json_view/is_object.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -62,7 +62,6 @@ This library extends primitive types to binary types, because binary types are r
 - [is_boolean()](is_boolean.md) returns whether the JSON value is a boolean
 - [is_number()](is_number.md) returns whether the JSON value is a number
 - [is_binary()](is_binary.md) returns whether the JSON value is a binary array
- [basic_json_view::is_primitive](../basic_json_view/is_primitive.md) - the same check on a zero-copy view

 ## Version history

@@ -34,10 +34,6 @@ Constant.
    --8<-- "examples/is_string.output"
    ```

-## See also
-
- [basic_json_view::is_string](../basic_json_view/is_string.md) - the same check on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -57,7 +57,6 @@ Note that though strings are containers in C++, they are treated as primitive va
 - [is_primitive()](is_primitive.md) returns whether JSON value is primitive
 - [is_array()](is_array.md) returns whether the value is an array
 - [is_object()](is_object.md) returns whether the value is an object
- [basic_json_view::is_structured](../basic_json_view/is_structured.md) - the same check on a zero-copy view

 ## Version history

@@ -90,7 +90,9 @@ The SAX event lister must follow the interface of [`json_sax`](../json_sax/index

 ## Return value

-return value of the last processed SAX event
+`#!cpp true` if the input was parsed without errors and no SAX event returned `#!cpp false`; `#!cpp false` otherwise.
+In particular, the result is `#!cpp false` for input with errors, even if the SAX parser recovered from all of them
+(see [error recovery](../../features/parsing/error_recovery.md)).

 ## Exception safety

@@ -138,6 +140,7 @@ A UTF-8 byte order mark is silently ignored.
 - Ignoring comments via `ignore_comments` added in version 3.9.0.
 - Added `ignore_trailing_commas` in version 3.13.0.
 - Extended container support (1) to include types with lvalue-only ADL `begin`/`end` (matching `std::begin`/`std::end` semantics) in version 3.13.0.
+- Recovering from parse errors (see [`parse_error`](../json_sax/parse_error.md)) added in version 3.13.0.
 - Extended overload (2) to accept heterogeneous iterator+sentinel pairs (C++20 ranges support) in version 3.13.0.
 - `JSON_PRECISE_STREAM_POSITION` added in version 3.13.0 to optionally leave a `#!cpp std::istream` positioned right
  after the parsed value when `strict` is `#!cpp false`.
@@ -51,10 +51,6 @@ JSON value which is `1` in the case of a string.
    --8<-- "examples/size.output"
    ```

-## See also
-
- [basic_json_view::size](../basic_json_view/size.md) - the same function on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -47,10 +47,6 @@ Constant.
    --8<-- "examples/type.output"
    ```

-## See also
-
- [basic_json_view::type](../basic_json_view/type.md) - the same function on a zero-copy view
-
 ## Version history

 - Added in version 1.0.0.
@@ -1,67 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>accept
-
-```cpp
-template<typename InputType>
-static bool accept(InputType&& input,
-                   const bool ignore_comments = false,
-                   const bool ignore_trailing_commas = false);
-```
-
-Checks whether the input is valid JSON, accepting and rejecting exactly what
-[`BasicJsonType::accept()`](../basic_json/accept.md) does, with the same options. Unlike [`parse()`](parse.md), this
-function never throws an exception for invalid input, and the returned `#!cpp bool` is the only result -- no document
-is returned.
-
-## Template parameters
-
-`InputType`
-:   A compatible input; see [`parse`](parse.md#template-parameters).
-
-## Parameters
-
-`input` (in)
-:   Input to check.
-
-`ignore_comments` (in)
-:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
-    (`#!cpp false`); (optional, `#!cpp false` by default)
-
-`ignore_trailing_commas` (in)
-:   whether trailing commas in arrays or objects should be ignored and treated like whitespace (`#!cpp true`) or
-    yield a parse error (`#!cpp false`); (optional, `#!cpp false` by default)
-
-## Return value
-
-Whether the input is valid JSON.
-
-## Exception safety
-
-Strong guarantee: this function itself never throws for an invalid input; it can only throw what allocating the
-input's own copy (for inputs that are always read into a buffer) throws.
-
-## Complexity
-
-Linear in the length of the input.
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__accept.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__accept.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input
- [`BasicJsonType::accept`](../basic_json/accept.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,58 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>basic_json_document
-
-```cpp
-// (1)
-basic_json_document() = default;
-
-// (2)
-basic_json_document(basic_json_document&& other) noexcept = default;
-
-// (3)
-basic_json_document(const basic_json_document&) = delete;
-```
-
-1. Creates an empty (discarded) document: [`root()`](root.md) returns a discarded view, and
-   [`is_discarded()`](is_discarded.md) is `#!cpp true`.
-2. Move constructor. Takes over `other`'s index and, if owned, its text; `other` is left as an empty document. Views
-   taken from `other` before the move remain valid, because the index is heap-allocated independently of the
-   `basic_json_document` object.
-3. `basic_json_document` is move-only. Copying is disabled because it would either duplicate a potentially large index
-   and text, or leave two documents claiming to borrow the same buffer.
-
-## Parameters
-
-`other` (in)
-:   another document to move the index and text from
-
-## Exception safety
-
-No-throw guarantee: the default and move constructors never throw exceptions.
-
-## Complexity
-
-Constant, for the default and move constructors.
-
-## Examples
-
-??? example
-
-    The example below shows the default constructor and demonstrates that `basic_json_document` is move-only.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__basic_json_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__basic_json_document.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input
- [is_discarded](is_discarded.md) - return whether the last parse failed
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,56 +0,0 @@
-# <small>nlohmann::</small>basic_json_document
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-template<typename BasicJsonType>
-class basic_json_document;
-```
-
-A parsed JSON text, held as a flat index of its values
-([16 bytes per value](../../home/architecture.md#node-index-of-json-views)) instead of a tree of `BasicJsonType` values.
-Strings and numbers stay in the source text; only strings that contain escapes are decoded, into one buffer owned by
-the document. [`basic_json_view`](../basic_json_view/index.md) is a read-only handle to one value of a
-`basic_json_document`; [`materialize()`](../basic_json_view/materialize.md) turns a subtree back into the
-`BasicJsonType` value that [`BasicJsonType::parse()`](../basic_json/parse.md) would have produced for it.
-
-A document may **borrow** the text it was parsed from (the caller's buffer must then outlive the document) or **own**
-it (a copy, or an rvalue `#!cpp std::string` that was moved in); see [`owns_source`](owns_source.md). `basic_json_document`
-is move-only: copying a document would either duplicate a potentially large index and text, or leave two documents
-claiming to borrow the same buffer, so it is disabled.
-
-## Template parameters
-
-`BasicJsonType`
-:   a specialization of [`basic_json`](../basic_json/index.md), for instance [`json`](../json.md) or
-    [`ordered_json`](../ordered_json.md). Only 64-bit `number_integer_t`/`number_unsigned_t` types are supported; this
-    is checked with a `static_assert`.
-
-## Specializations
-
- [**json_document**](../json_document.md) - documents of the default specialization [`json`](../json.md)
- [**ordered_json_document**](../ordered_json_document.md) - documents of [`ordered_json`](../ordered_json.md)
-
-## Member types
-
- **view_type** - the type of view returned by [`root()`](root.md) (`#!cpp basic_json_view<BasicJsonType>`)
- **value_t** - the JSON type enumeration, see [`basic_json::value_t`](../basic_json/value_t.md)
-
-## Member functions
-
- [(constructor)](basic_json_document.md)
- [**parse**](parse.md) (_static_) - deserialize from a compatible input, borrowing or owning it as appropriate
- [**parse_copy**](parse_copy.md) (_static_) - deserialize a copy of a compatible input
- [**accept**](accept.md) (_static_) - check whether the input is valid JSON
- [**read**](read.md) - (re-)parse into this document, reusing its memory
- [**root**](root.md) - the view of the root value
- [**is_discarded**](is_discarded.md) - return whether the last parse failed
- [**source**](source.md) - the parsed text
- [**owns_source**](owns_source.md) - return whether the document holds its own copy of the text
- [**node_count**](node_count.md) - the number of index entries (values plus object keys)
- [**memory_usage**](memory_usage.md) - the number of bytes held by the document
- [**shrink_to_fit**](shrink_to_fit.md) - release unused index capacity
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,49 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>is_discarded
-
-```cpp
-bool is_discarded() const noexcept;
-```
-
-Returns whether the document holds no value, either because it was default-constructed or because the last call to
-[`parse()`](parse.md), [`parse_copy()`](parse_copy.md), or [`read()`](read.md) failed with `allow_exceptions` set to
-`#!cpp false`.
-
-## Return value
-
-`#!cpp true` if the document is discarded, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-When the document is discarded, [`root()`](root.md) returns a discarded view (its
-[`is_discarded()`](../basic_json_view/is_discarded.md) is also `#!cpp true`).
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__is_discarded.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__is_discarded.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input
- [is_discarded (basic_json_view)](../basic_json_view/is_discarded.md) - return whether a view is invalid
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,50 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>memory_usage
-
-```cpp
-std::size_t memory_usage() const noexcept;
-```
-
-Returns the number of bytes held by the document: the node index, the decoded-string buffer (for strings that
-contain escapes), and, for an owned document, its copy of the source text.
-
-## Return value
-
-The number of bytes the document holds, `0` for a [discarded](is_discarded.md) document.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-The exact value depends on the platform, the allocator, and the library's own layout, and may change between
-versions; do not rely on it being a specific number, and do not compare it across different builds or platforms.
-Compare it for the same document over time, or between documents built with the same binary, instead -- for instance
-to observe the effect of [`shrink_to_fit()`](shrink_to_fit.md).
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__memory_usage.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__memory_usage.output"
-    ```
-
-## See also
-
- [node_count](node_count.md) - the number of index entries
- [shrink_to_fit](shrink_to_fit.md) - release unused index capacity
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,49 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>node_count
-
-```cpp
-std::size_t node_count() const noexcept;
-```
-
-Returns the number of entries in the document's flat index.
-
-## Return value
-
-The number of index entries: one per value (of any type, at any nesting depth) plus one per object key. `0` for a
-[discarded](is_discarded.md) document.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-Each index entry is [16 bytes](../../home/architecture.md#node-index-of-json-views), so `#!cpp node_count() * 16` is
-the size of the index itself (part, but not all, of [`memory_usage()`](memory_usage.md), which also counts decoded
-strings and, for an owned document, the text).
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__node_count.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__node_count.output"
-    ```
-
-## See also
-
- [memory_usage](memory_usage.md) - the number of bytes held by the document
- [shrink_to_fit](shrink_to_fit.md) - release unused index capacity
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,49 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>owns_source
-
-```cpp
-bool owns_source() const noexcept;
-```
-
-Returns whether the document holds its own copy of the parsed text, as opposed to borrowing the caller's buffer.
-
-## Return value
-
-`#!cpp true` if the document owns the text returned by [`source()`](source.md), `#!cpp false` if it borrows it (or if
-the document is [discarded](is_discarded.md)).
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-See the ownership table on [`parse`](parse.md#notes) for which inputs are borrowed and which are owned. A borrowed
-document (`#!cpp owns_source() == false`) is only valid while the buffer it was parsed from is still alive.
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__owns_source.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__owns_source.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input
- [parse_copy](parse_copy.md) - deserialize a copy of a compatible input, always owned
- [source](source.md) - the parsed text
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,139 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>parse
-
-```cpp
-// (1)
-template<typename InputType>
-static basic_json_document parse(InputType&& input,
-                                 const bool allow_exceptions = true,
-                                 const bool ignore_comments = false,
-                                 const bool ignore_trailing_commas = false);
-
-// (2)
-template<typename IteratorType>
-static basic_json_document parse(IteratorType first, IteratorType last,
-                                 const bool allow_exceptions = true,
-                                 const bool ignore_comments = false,
-                                 const bool ignore_trailing_commas = false);
-```
-
-1. Deserialize from a compatible input, borrowing or owning it depending on its value category and type (see Notes).
-2. Deserialize from a pair of input iterators.
-
-Both overloads accept exactly what [`BasicJsonType::parse()`](../basic_json/parse.md) accepts, with the same
-`ignore_comments`/`ignore_trailing_commas` options, but build a [`basic_json_document`](index.md) (a flat index into
-the input) instead of a tree of `BasicJsonType` values.
-
-## Template parameters
-
-`InputType`
-:   A compatible input, for instance:
-
-    - a `#!cpp std::string`, `#!cpp std::string_view`, or a C-style array of characters
-    - a pointer to a null-terminated string of single byte characters
-    - a container for which `#!cpp obj.data()` and `#!cpp obj.size()` give contiguous single-byte access, e.g.
-      `#!cpp std::vector<char>` or `#!cpp std::vector<std::uint8_t>`
-    - an `#!cpp std::istream` object, or anything else [`BasicJsonType::parse()`](../basic_json/parse.md) accepts
-
-`IteratorType`
-:   a compatible iterator type, for instance a pair of pointers such as `ptr` and `ptr + len`, or a pair of
-    `#!cpp std::string::iterator`
-
-## Parameters
-
-`input` (in)
-:   Input to parse from.
-
-`allow_exceptions` (in)
-:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
-
-`ignore_comments` (in)
-:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
-    (`#!cpp false`); (optional, `#!cpp false` by default)
-
-`ignore_trailing_commas` (in)
-:   whether trailing commas in arrays or objects should be ignored and treated like whitespace (`#!cpp true`) or
-    yield a parse error (`#!cpp false`); (optional, `#!cpp false` by default)
-
-`first` (in)
-:   iterator to the start of a character range
-
-`last` (in)
-:   iterator to the end of a character range
-
-## Return value
-
-The parsed document. If `allow_exceptions` is `#!cpp false` and the input is not valid JSON, the returned document is
-discarded; see [`is_discarded`](is_discarded.md).
-
-## Exceptions
-
-Throws the same exception [`BasicJsonType::parse()`](../basic_json/parse.md) throws for the same input and options --
-the same exception id, message, and position -- because on a failing input the library's own parser is run on the
-same bytes to produce the diagnostic. Additionally throws
-[`out_of_range.416`](../../home/exceptions.md#jsonexceptionout_of_range416) if the input is 4 GiB or larger, a size
-[`BasicJsonType::parse()`](../basic_json/parse.md) does not reject.
-
-## Complexity
-
-Linear in the length of the input.
-
-## Notes
-
-**Ownership.** Whether the document borrows `input` or owns a copy of it depends on its value category and type:
-
-| `input`                                                                             | ownership                                                    |
-|--------------------------------------------------------------------------------------|--------------------------------------------------------------|
-| lvalue byte container (`std::string`, `std::vector<char>`, ...), `std::string_view`, C string, character array | **borrowed** -- `input` must outlive the document |
-| rvalue `#!cpp std::string`                                                            | **owned**, moved in without a copy                            |
-| rvalue byte container other than `#!cpp std::string`                                  | **owned**, copied                                             |
-| stream, wide string, or anything else read through the general input adapter          | **owned**, read into a buffer (a stream is read to its end)   |
-
-For overload (2), a pair of pointers to single-byte integers (e.g. `#!cpp const char*`, `#!cpp std::uint8_t*`) is
-borrowed. From C++20 on, so is any other contiguous iterator over single bytes, such as
-`#!cpp std::vector<char>::iterator` or `#!cpp std::string::const_iterator`. Before C++20 these iterators cannot be
-told apart from other class-type iterators, so their range is read into an owned buffer, as is any non-contiguous
-range (e.g. of a `#!cpp std::list<char>`).
-
-See [`owns_source`](owns_source.md) to check which happened after a call, and the
-[feature page](../../features/json_view.md) for the reasoning.
-
-**Numbers.** As for [`BasicJsonType::parse()`](../basic_json/parse.md), an integer literal too large for the 64-bit
-integer type becomes a floating-point value.
-
-## Examples
-
-??? example "Example: (1) borrowed vs. owned input, and errors identical to `BasicJsonType::parse()`"
-
-    ```cpp
-    --8<-- "examples/basic_json_document__parse.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__parse.output"
-    ```
-
-??? example "Example: (2) parse an iterator range (no NUL terminator required)"
-
-    ```cpp
-    --8<-- "examples/basic_json_document__parse_iterator_pair.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__parse_iterator_pair.output"
-    ```
-
-## See also
-
- [parse_copy](parse_copy.md) - deserialize a copy of a compatible input
- [accept](accept.md) - check whether the input is valid JSON
- [read](read.md) - (re-)parse into this document, reusing its memory
- [owns_source](owns_source.md) - return whether the document holds its own copy of the text
- [`BasicJsonType::parse`](../basic_json/parse.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,77 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>parse_copy
-
-```cpp
-template<typename InputType>
-static basic_json_document parse_copy(InputType&& input,
-                                      const bool allow_exceptions = true,
-                                      const bool ignore_comments = false,
-                                      const bool ignore_trailing_commas = false);
-```
-
-Deserialize from a compatible input, always taking the document's own copy of it, regardless of the value category or
-type of `input`. Unlike [`parse()`](parse.md), the returned document never depends on `input` staying alive.
-
-## Template parameters
-
-`InputType`
-:   A compatible input; see [`parse`](parse.md#template-parameters).
-
-## Parameters
-
-`input` (in)
-:   Input to parse from.
-
-`allow_exceptions` (in)
-:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
-
-`ignore_comments` (in)
-:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
-    (`#!cpp false`); (optional, `#!cpp false` by default)
-
-`ignore_trailing_commas` (in)
-:   whether trailing commas in arrays or objects should be ignored and treated like whitespace (`#!cpp true`) or
-    yield a parse error (`#!cpp false`); (optional, `#!cpp false` by default)
-
-## Return value
-
-The parsed document, with [`owns_source()`](owns_source.md) `#!cpp true`. If `allow_exceptions` is `#!cpp false` and
-the input is not valid JSON, the returned document is discarded; see [`is_discarded`](is_discarded.md).
-
-## Exceptions
-
-Same as [`parse`](parse.md#exceptions).
-
-## Complexity
-
-Linear in the length of the input.
-
-## Notes
-
-`parse_copy()` accepts and rejects exactly what [`parse()`](parse.md) does, and classifies numbers the same way; it
-only differs in that the input is always copied rather than sometimes borrowed. Prefer [`parse()`](parse.md) when the
-input's lifetime already covers the document's, since it avoids the copy for borrowed inputs.
-
-## Examples
-
-??? example
-
-    The example below returns a document from a function whose local buffer would otherwise not outlive it.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__parse_copy.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__parse_copy.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input, borrowing it where possible
- [owns_source](owns_source.md) - return whether the document holds its own copy of the text
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,76 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>read
-
-```cpp
-template<typename InputType>
-void read(InputType&& input,
-         const bool allow_exceptions = true,
-         const bool ignore_comments = false,
-         const bool ignore_trailing_commas = false);
-```
-
-(Re-)parses `input` into `#!cpp *this`, discarding the document's previous value and reusing its memory (the node
-index, the decoded-string buffer, and, if applicable, the owned copy of the text) rather than allocating a fresh
-document. [`parse()`](parse.md) is implemented in terms of this function, applied to a default-constructed document.
-
-## Template parameters
-
-`InputType`
-:   A compatible input; see [`parse`](parse.md#template-parameters).
-
-## Parameters
-
-`input` (in)
-:   Input to parse from.
-
-`allow_exceptions` (in)
-:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
-
-`ignore_comments` (in)
-:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
-    (`#!cpp false`); (optional, `#!cpp false` by default)
-
-`ignore_trailing_commas` (in)
-:   whether trailing commas in arrays or objects should be ignored and treated like whitespace (`#!cpp true`) or
-    yield a parse error (`#!cpp false`); (optional, `#!cpp false` by default)
-
-## Exceptions
-
-Same as [`parse`](parse.md#exceptions).
-
-## Complexity
-
-Linear in the length of the input.
-
-## Notes
-
-Every view taken from `#!cpp *this` before the call -- including the previous [`root()`](root.md) -- is invalidated,
-whether or not the new parse succeeds; take fresh views from [`root()`](root.md) afterward.
-
-`input` is borrowed or owned by the same rules as [`parse()`](parse.md#notes); a document can borrow on one call and
-own on the next, since ownership is decided freshly each time.
-
-## Examples
-
-??? example
-
-    The example below parses a sequence of messages into the same document, reusing its memory instead of allocating
-    a new document for each one.
-
-    ```cpp
-    --8<-- "examples/basic_json_document__read.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__read.output"
-    ```
-
-## See also
-
- [parse](parse.md) - deserialize from a compatible input
- [root](root.md) - the view of the root value
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,50 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>root
-
-```cpp
-view_type root() const noexcept;
-```
-
-Returns a view of the root value of the document.
-
-## Return value
-
-A [`view_type`](index.md#member-types) (i.e. `#!cpp basic_json_view<BasicJsonType>`) for the root value, or a
-discarded view if the document is [discarded](is_discarded.md).
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`root()` is a cheap handle into the document's index, not a copy of anything; call it as often as needed. The
-returned view is valid under the same conditions as any other view of the document -- see
-[Object inspection](../basic_json_view/index.md) -- in particular, it is invalidated by the next
-[`read()`](read.md) or [`shrink_to_fit()`](shrink_to_fit.md) on this document.
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__root.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__root.output"
-    ```
-
-## See also
-
- [is_discarded](is_discarded.md) - return whether the last parse failed
- [materialize](../basic_json_view/materialize.md) - build the `BasicJsonType` value of a subtree
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,58 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>shrink_to_fit
-
-```cpp
-void shrink_to_fit();
-```
-
-Releases capacity that is no longer needed, both of the node index and of the buffer for decoded strings (strings that
-contained escape sequences), e.g. after [`read()`](read.md) replaced a large document with a much smaller one. Like
-`#!cpp std::vector::shrink_to_fit()`, this is a non-binding request: the library may keep more capacity than strictly
-necessary.
-
-## Exception safety
-
-Strong guarantee: if an exception is thrown, there are no changes to the document.
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc` if the reallocation fails; on exception, the document is unchanged.
-
-## Complexity
-
-Linear in [`node_count()`](node_count.md) plus the length of the decoded strings.
-
-## Notes
-
-!!! warning "Invalidates views"
-
-    Unlike moving the document, `shrink_to_fit()` **invalidates every view taken from this document before the
-    call**, including a previously obtained [`root()`](root.md): the node index is moved into a new, smaller
-    allocation, and the old one is freed. Take a fresh view from [`root()`](root.md) after calling this function.
-
-This is unlike `#!cpp std::vector::shrink_to_fit()`, which promises nothing about validity but in practice often
-leaves iterators alone when it did not need to reallocate; here, an implementation that avoids a reallocation when
-possible would be an internal optimization only, not a guarantee to rely on.
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__shrink_to_fit.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__shrink_to_fit.output"
-    ```
-
-## See also
-
- [node_count](node_count.md) - the number of index entries
- [memory_usage](memory_usage.md) - the number of bytes held by the document
- [root](root.md) - the view of the root value
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,48 +0,0 @@
-# <small>nlohmann::basic_json_document::</small>source
-
-```cpp
-view_type::string_view_t source() const noexcept;
-```
-
-Returns the parsed text, whether it is borrowed from the caller or owned by the document.
-
-## Return value
-
-A `#!cpp string_view_t` (`#!cpp std::string_view` on C++17 and newer) over the parsed text, or an empty one if the
-document is [discarded](is_discarded.md).
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-For a borrowed document, `source()` points directly into the caller's buffer, so it is only valid while that buffer
-is; see [`owns_source`](owns_source.md).
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_document__source.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_document__source.output"
-    ```
-
-## See also
-
- [owns_source](owns_source.md) - return whether the document holds its own copy of the text
- [source_offset](../basic_json_view/source_offset.md) - byte offset of a value in the source text
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,51 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>basic_json_view
-
-```cpp
-basic_json_view() noexcept = default;
-```
-
-Creates an invalid (discarded) view: [`type()`](type.md) is `#!cpp value_t::discarded`,
-[`is_discarded()`](is_discarded.md) is `#!cpp true`, and `#!cpp explicit operator bool()` is `#!cpp false`.
-
-This is the only constructor a caller can use directly. Every other view is obtained from a
-[`basic_json_document`](../basic_json_document/index.md), via [`root()`](../basic_json_document/root.md) or (once
-element access is added) from navigating into a container.
-
-## Exception safety
-
-No-throw guarantee: this constructor never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`basic_json_view` is trivially copyable (it holds two pointers), so a default-constructed view can be used as a
-placeholder for "no value yet" and later be assigned a real view.
-
-## Examples
-
-??? example
-
-    The example below shows the default constructor and that a `basic_json_view` is a small, copyable handle.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__basic_json_view.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__basic_json_view.output"
-    ```
-
-## See also
-
- [is_discarded](is_discarded.md) - return whether the view is invalid
- [operator bool](operator_bool.md) - return whether the view refers to a value
- [root](../basic_json_document/root.md) - the view of a document's root value
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,61 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>empty
-
-```cpp
-bool empty() const noexcept;
-```
-
-Checks whether [`size()`](size.md) is `0`, as [`BasicJsonType::empty()`](../basic_json/empty.md) would for the same
-value.
-
-## Return value
-
-The return value depends on the type and is defined as follows:
-
-| Value type          | return value    |
-|----------------------|-----------------|
-| null                  | `#!cpp true`     |
-| discarded             | `#!cpp true`     |
-| boolean               | `#!cpp false`    |
-| string                | `#!cpp false`    |
-| number                | `#!cpp false`    |
-| object                | `#!cpp object_t::empty()` |
-| array                 | `#!cpp array_t::empty()`  |
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-As for [`BasicJsonType::empty()`](../basic_json/empty.md), this does not return whether a string value is empty -- it
-is `#!cpp false` for any string, regardless of its length.
-
-## Examples
-
-??? example
-
-    The example below uses [`size()`](size.md) and `empty()` to decide whether a parsed message is worth acting on,
-    without materializing it into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__size_empty.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__size_empty.output"
-    ```
-
-## See also
-
- [size](size.md) - return the number of elements
- [`BasicJsonType::empty`](../basic_json/empty.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,82 +0,0 @@
-# <small>nlohmann::</small>basic_json_view
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-template<typename BasicJsonType>
-class basic_json_view;
-```
-
-A read-only handle to one value of a [`basic_json_document`](../basic_json_document/index.md): two pointers (a pointer
-to the document and a pointer into its index), trivially copyable. A view is valid as long as
-
- the document is alive,
- the document has not been re-parsed with [`read()`](../basic_json_document/read.md) (or
-  [`parse()`](../basic_json_document/parse.md) into it) or shrunk with
-  [`shrink_to_fit()`](../basic_json_document/shrink_to_fit.md) since the view was taken, and
- if the document borrows its source text, that text is still alive.
-
-Moving the document itself does not invalidate its views: the index is heap-allocated independently of the
-`basic_json_document` object.
-
-`basic_json_view` provides the read-only part of the `BasicJsonType` interface: the type-inspection functions, and
-[`materialize()`](materialize.md) to build the `BasicJsonType` value of a subtree on demand. It does not (yet) provide
-element access, iteration, `get<T>()`, JSON Pointer support, `dump()`, or comparison.
-
-## Template parameters
-
-`BasicJsonType`
-:   a specialization of [`basic_json`](../basic_json/index.md), matching the
-    [`basic_json_document`](../basic_json_document/index.md) the view was taken from.
-
-## Specializations
-
- [**json_view**](../json_view.md) - views of a [`json_document`](../json_document.md)
- [**ordered_json_view**](../ordered_json_view.md) - views of an [`ordered_json_document`](../ordered_json_document.md)
-
-## Member types
-
- **value_t** - the JSON type enumeration, see [`basic_json::value_t`](../basic_json/value_t.md)
- **string_t**, **number_integer_t**, **number_unsigned_t**, **number_float_t**, **json_pointer** - the corresponding
-  member types of `BasicJsonType`
- **size_type** - `#!cpp std::size_t`
- **string_view_t** - `#!cpp std::string_view` on C++17 and newer, a minimal internal substitute otherwise
-
-## Member functions
-
- [(constructor)](basic_json_view.md)
-
-### Object inspection
-
- [**type**](type.md) - return the type of the value
- [**is_null**](is_null.md) - return whether the value is null
- [**is_boolean**](is_boolean.md) - return whether the value is a boolean
- [**is_number**](is_number.md) - return whether the value is a number
- [**is_number_integer**](is_number_integer.md) - return whether the value is an integer number
- [**is_number_unsigned**](is_number_unsigned.md) - return whether the value is an unsigned integer number
- [**is_number_float**](is_number_float.md) - return whether the value is a floating-point number
- [**is_string**](is_string.md) - return whether the value is a string
- [**is_array**](is_array.md) - return whether the value is an array
- [**is_object**](is_object.md) - return whether the value is an object
- [**is_binary**](is_binary.md) - return whether the value is a binary array (always `#!cpp false`)
- [**is_primitive**](is_primitive.md) - return whether the type is primitive
- [**is_structured**](is_structured.md) - return whether the type is structured
- [**is_discarded**](is_discarded.md) - return whether the view is invalid
- [**operator bool**](operator_bool.md) - return whether the view refers to a value
-
-### Capacity
-
- [**size**](size.md) - return the number of elements
- [**empty**](empty.md) - return whether the value has no elements
-
-### Conversion
-
- [**materialize**](materialize.md) - build the `BasicJsonType` value of this subtree
-
-### Source access
-
- [**source_offset**](source_offset.md) - byte offset of this value in the document's source text
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_array
-
-```cpp
-bool is_array() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is an array.
-
-## Return value
-
-`#!cpp true` if the type is an array, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_structured](is_structured.md) - return whether the type is structured
- [size](size.md), [empty](empty.md) - the number of elements, and whether there are none
- [`BasicJsonType::is_array`](../basic_json/is_array.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_binary
-
-```cpp
-bool is_binary() const noexcept;
-```
-
-This function always returns `#!cpp false`: a JSON text has no binary values, so a view can never refer to one. The
-function exists for interface parity with [`BasicJsonType::is_binary`](../basic_json/is_binary.md).
-
-## Return value
-
-`#!cpp false`, always.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [type](type.md) - return the type of the value
- [`BasicJsonType::is_binary`](../basic_json/is_binary.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,45 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_boolean
-
-```cpp
-bool is_boolean() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is a boolean.
-
-## Return value
-
-`#!cpp true` if the type is a boolean, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [type](type.md) - return the type of the value
- [`BasicJsonType::is_boolean`](../basic_json/is_boolean.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,55 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_discarded
-
-```cpp
-bool is_discarded() const noexcept;
-```
-
-Returns whether this view is invalid, i.e. does not refer to a value. This is the case for a default-constructed
-view (see [(constructor)](basic_json_view.md)), and for [`root()`](../basic_json_document/root.md) of a document
-that is itself [discarded](../basic_json_document/is_discarded.md) -- in particular, the root of a failed
-[`parse()`](../basic_json_document/parse.md) with `allow_exceptions` set to `#!cpp false`.
-
-## Return value
-
-`#!cpp true` if the view is discarded, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-`#!cpp v.is_discarded()` and `#!cpp !static_cast<bool>(v)` are equivalent; use whichever reads better at the call
-site.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [operator bool](operator_bool.md) - return whether the view refers to a value
- [(constructor)](basic_json_view.md) - the default constructor creates a discarded view
- [is_discarded (basic_json_document)](../basic_json_document/is_discarded.md) - return whether the last parse failed
- [`BasicJsonType::is_discarded`](../basic_json/is_discarded.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,45 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_null
-
-```cpp
-bool is_null() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is `#!json null`.
-
-## Return value
-
-`#!cpp true` if the type is `#!json null`, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [type](type.md) - return the type of the value
- [`BasicJsonType::is_null`](../basic_json/is_null.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,47 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_number
-
-```cpp
-bool is_number() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is a number, i.e. an integer, unsigned integer, or floating-point value. It is defined as `#!cpp is_number_integer() || is_number_float()`.
-
-## Return value
-
-`#!cpp true` if the type is a number, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_number_integer](is_number_integer.md) - return whether the value is an integer or unsigned integer number
- [is_number_unsigned](is_number_unsigned.md) - return whether the value is an unsigned integer number
- [is_number_float](is_number_float.md) - return whether the value is a floating-point number
- [`BasicJsonType::is_number`](../basic_json/is_number.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,51 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_number_float
-
-```cpp
-bool is_number_float() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is a floating-point number.
-
-## Return value
-
-`#!cpp true` if the type is `#!cpp value_t::number_float`, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-As for [`BasicJsonType::parse`](../basic_json/parse.md), an integer literal that does not fit into the 64-bit
-integer type is classified as a floating-point number, so `is_number_float()` can be `#!cpp true` even for an
-integer-looking token in the source text.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_number](is_number.md) - return whether the value is a number
- [`BasicJsonType::is_number_float`](../basic_json/is_number_float.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,51 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_number_integer
-
-```cpp
-bool is_number_integer() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is an integer or unsigned integer number.
-
-## Return value
-
-`#!cpp true` if the type is `#!cpp value_t::number_integer` or `#!cpp value_t::number_unsigned`, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-As for [`BasicJsonType::is_number_integer`](../basic_json/is_number_integer.md), this includes unsigned integer
-values; use [`is_number_unsigned`](is_number_unsigned.md) to test for those specifically.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_number](is_number.md) - return whether the value is a number
- [is_number_unsigned](is_number_unsigned.md) - return whether the value is an unsigned integer number
- [`BasicJsonType::is_number_integer`](../basic_json/is_number_integer.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,45 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_number_unsigned
-
-```cpp
-bool is_number_unsigned() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is an unsigned integer number.
-
-## Return value
-
-`#!cpp true` if the type is `#!cpp value_t::number_unsigned`, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_number_integer](is_number_integer.md) - return whether the value is an integer or unsigned integer number
- [`BasicJsonType::is_number_unsigned`](../basic_json/is_number_unsigned.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_object
-
-```cpp
-bool is_object() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is an object.
-
-## Return value
-
-`#!cpp true` if the type is an object, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_structured](is_structured.md) - return whether the type is structured
- [size](size.md), [empty](empty.md) - the number of elements, and whether there are none
- [`BasicJsonType::is_object`](../basic_json/is_object.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_primitive
-
-```cpp
-bool is_primitive() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is primitive, i.e. `#!json null`, a boolean, a number, or a string. It is defined as `#!cpp is_null() || is_string() || is_boolean() || is_number()`.
-
-## Return value
-
-`#!cpp true` if the type is primitive, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_structured](is_structured.md) - return whether the type is structured (the complement of this function, for a
-  non-discarded view)
- [`BasicJsonType::is_primitive`](../basic_json/is_primitive.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,45 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_string
-
-```cpp
-bool is_string() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is a string.
-
-## Return value
-
-`#!cpp true` if the type is a string, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [source_offset](source_offset.md) - byte offset of this value in the document's source text
- [`BasicJsonType::is_string`](../basic_json/is_string.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>is_structured
-
-```cpp
-bool is_structured() const noexcept;
-```
-
-This function returns `#!cpp true` if and only if the value is structured, i.e. an array or an object. It is defined as `#!cpp is_array() || is_object()`.
-
-## Return value
-
-`#!cpp true` if the type is structured, `#!cpp false` otherwise.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_primitive](is_primitive.md) - return whether the type is primitive
- [size](size.md), [empty](empty.md) - the number of elements, and whether there are none
- [`BasicJsonType::is_structured`](../basic_json/is_structured.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,69 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>materialize
-
-```cpp
-BasicJsonType materialize() const;
-```
-
-Builds the `BasicJsonType` value of this subtree: the value [`BasicJsonType::parse()`](../basic_json/parse.md) would
-have produced for the same source text, allocated for the first time by this call.
-
-## Return value
-
-The `BasicJsonType` value of this subtree, or a discarded `BasicJsonType` value (`#!cpp BasicJsonType(value_t::discarded)`)
-if the view is [discarded](is_discarded.md).
-
-## Exception safety
-
-Strong guarantee: if an exception is thrown, there are no changes to the view or the document it refers to (nothing
-about either is mutated by this function).
-
-## Exceptions
-
-May throw `#!cpp std::bad_alloc` (via `BasicJsonType`'s allocator) if constructing the result fails.
-
-## Complexity
-
-Linear in the size of the subtree.
-
-## Notes
-
-`materialize()` replays the subtree through the same SAX builder [`BasicJsonType::parse()`](../basic_json/parse.md)
-uses internally, so the result matches it exactly -- including, for an object, that a repeated key keeps only its
-last value. The replay is iterative, so it is not limited by the call stack the way a naive recursive conversion
-would be; the JSON nesting depth is limited only by available memory, as for `BasicJsonType::parse()` itself.
-
-Unlike parsing with [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) enabled, the values
-produced by `materialize()` do not carry source positions: there is no lexer run during the replay to record them.
-
-Calling `materialize()` on the same view repeatedly builds a new, independent `BasicJsonType` value each time; it
-never caches the result.
-
-## Examples
-
-??? example
-
-    The example below skips messages that are not useful -- a discarded value, or an empty array -- using only
-    [`is_array()`](is_array.md) and [`empty()`](empty.md), and calls `materialize()` only for the messages that are
-    actually used, so no `BasicJsonType` value (and none of its per-element allocations) is ever built for the
-    skipped ones.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__materialize.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__materialize.output"
-    ```
-
-## See also
-
- [root](../basic_json_document/root.md) - the view of a document's root value
- [`BasicJsonType::parse`](../basic_json/parse.md) - build a `BasicJsonType` value directly from a JSON text
- [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) - source positions on parsed values (not
-  produced by `materialize()`)
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,46 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>operator bool
-
-```cpp
-explicit operator bool() const noexcept;
-```
-
-Returns whether this view refers to a value, i.e. the negation of [`is_discarded()`](is_discarded.md). Being
-`#!cpp explicit`, this conversion is only considered in a boolean context (`#!cpp if (v)`, `#!cpp !v`, `#!cpp v &&
-...`), not for implicit conversions to other types.
-
-## Return value
-
-`#!cpp true` if the view refers to a value, `#!cpp false` if it is [discarded](is_discarded.md).
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_discarded](is_discarded.md) - return whether the view is invalid
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,60 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>size
-
-```cpp
-size_type size() const noexcept;
-```
-
-Returns the number of elements, as [`BasicJsonType::size()`](../basic_json/size.md) would for the same value.
-
-## Return value
-
-The return value depends on the type and is defined as follows:
-
-| Value type          | return value                |
-|----------------------|-----------------------------|
-| null                  | `0`                          |
-| discarded             | `0`                          |
-| boolean               | `1`                          |
-| string                | `1`                          |
-| number                | `1`                          |
-| object                | number of key/value pairs    |
-| array                 | number of elements           |
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant: for an object or array, the element count is stored in the index, not counted on demand.
-
-## Notes
-
-As for [`BasicJsonType::size()`](../basic_json/size.md), this does not return the length of a string value -- it is
-`1` for a string, regardless of its length.
-
-## Examples
-
-??? example
-
-    The example below uses `size()` and [`empty()`](empty.md) to decide whether a parsed message is worth acting on,
-    without materializing it into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__size_empty.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__size_empty.output"
-    ```
-
-## See also
-
- [empty](empty.md) - return whether the value has no elements
- [`BasicJsonType::size`](../basic_json/size.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,55 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>source_offset
-
-```cpp
-std::size_t source_offset() const noexcept;
-```
-
-Returns the byte offset of this value in the document's [`source()`](../basic_json_document/source.md) text, without
-materializing anything.
-
-## Return value
-
- For a string with no escapes, a number, `#!json true`/`#!json false`/`#!json null`, an array, or an object: the
-  byte offset of the first byte of the value's token (for a string: the first byte after the opening quote) in
-  [`source()`](../basic_json_document/source.md).
- `#!cpp static_cast<std::size_t>(-1)` for a [discarded](is_discarded.md) view, and for a string that contains
-  escapes -- such a string was decoded once into the document's own buffer, so there is no single byte range in
-  `source()` left to point at.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-This is a raw offset, not a length: the API does not (yet) expose how many bytes the token occupies in the source
-text, so `source_offset()` alone is enough to report *where* a value came from (for an error message, for syntax
-highlighting, ...) but not to slice its exact text back out of [`source()`](../basic_json_document/source.md) for a
-string, whose token length is not the same as its decoded [`size()`](size.md).
-
-## Examples
-
-??? example
-
-    ```cpp
-    --8<-- "examples/basic_json_view__source_offset.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__source_offset.output"
-    ```
-
-## See also
-
- [source](../basic_json_document/source.md) - the parsed text
- [is_string](is_string.md) - return whether the value is a string
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,53 +0,0 @@
-# <small>nlohmann::basic_json_view::</small>type
-
-```cpp
-value_t type() const noexcept;
-```
-
-Returns the type of the value this view refers to, as a value from the [`value_t`](../basic_json/value_t.md)
-enumeration -- the same enumeration [`BasicJsonType::type()`](../basic_json/type.md) uses.
-
-## Return value
-
-The type of the value; `#!cpp value_t::discarded` for a [discarded](is_discarded.md) view.
-
-## Exception safety
-
-No-throw guarantee: this function never throws exceptions.
-
-## Complexity
-
-Constant.
-
-## Notes
-
-Unlike [`BasicJsonType::type()`](../basic_json/type.md), this function can never return `#!cpp value_t::binary`: a
-JSON text has no binary values, so `type()` only distinguishes the eight ordinary JSON value types (plus
-`#!cpp discarded`).
-
-## Examples
-
-??? example
-
-    The example below classifies several parsed documents by the type of their root value, without materializing any
-    of them into a `BasicJsonType` value.
-
-    ```cpp
-    --8<-- "examples/basic_json_view__type_predicates.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/basic_json_view__type_predicates.output"
-    ```
-
-## See also
-
- [is_null](is_null.md), [is_boolean](is_boolean.md), [is_number](is_number.md), [is_string](is_string.md),
-  [is_array](is_array.md), [is_object](is_object.md) - type-specific predicates built on `type()`
- [`BasicJsonType::type`](../basic_json/type.md) - the corresponding function of `basic_json`
-
-## Version history
-
- Added in version 3.13.0.
@@ -1,35 +0,0 @@
-# <small>nlohmann::</small>json_document
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using json_document = basic_json_document<json>;
-```
-
-This type is a [`basic_json_document`](basic_json_document/index.md) of the default [`json`](json.md)
-specialization.
-
-## Examples
-
-??? example
-
-    The example below demonstrates how to use the type `nlohmann::json_document`.
-
-    ```cpp
-    --8<-- "examples/json_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/json_document.output"
-    ```
-
-## See also
-
- [json_view](json_view.md) - a view of a value of a `json_document`
- [ordered_json_document](ordered_json_document.md) - the corresponding document for `ordered_json`
-
-## Version history
-
-Since version 3.13.0.
@@ -7,7 +7,8 @@ struct json_sax;

 This class describes the SAX interface used by [sax_parse](../basic_json/sax_parse.md). Each function is called in
 different situations while the input is parsed. The boolean return value informs the parser whether to continue
-processing the input.
+processing the input; for [`parse_error`](parse_error.md), it decides whether to
+[recover from the error](../../features/parsing/error_recovery.md).

 ## Template parameters

@@ -21,7 +21,14 @@ A parse error occurred.

 ## Return value

-Whether parsing should proceed (**must return `#!cpp false`**).
+Whether to recover from the error:
+
+- `#!cpp false` stops parsing.
+- `#!cpp true` recovers from the error: the error is repaired and parsing continues. If that is not possible, which
+  happens in the binary formats when the end of the item with the error is unknown, the value read so far is completed
+  and parsing stops. See [error recovery](../../features/parsing/error_recovery.md) for how errors are repaired.
+
+Either way, [`sax_parse`](../basic_json/sax_parse.md) returns `#!cpp false`.

 ## Examples

@@ -39,6 +46,22 @@ Whether parsing should proceed (**must return `#!cpp false`**).
    --8<-- "examples/sax_parse.output"
    ```

+??? example
+
+    The example below shows how a SAX parser recovers from errors.
+
+    ```cpp
+    --8<-- "examples/sax_parse__error_recovery.cpp"
+    ```
+    
+    Output:
+    
+    ```
+    --8<-- "examples/sax_parse__error_recovery.output"
+    ```
+
 ## Version history

 - Added in version 3.2.0.
+- Returning `#!cpp true` recovers from the error since version 3.13.0; before, parsing stopped, but the result of
+  [`sax_parse`](../basic_json/sax_parse.md) could be wrong.
@@ -1,34 +0,0 @@
-# <small>nlohmann::</small>json_view
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using json_view = basic_json_view<json>;
-```
-
-This type is a [`basic_json_view`](basic_json_view/index.md) of a value of a [`json_document`](json_document.md).
-
-## Examples
-
-??? example
-
-    The example below demonstrates how to use the type `nlohmann::json_view`.
-
-    ```cpp
-    --8<-- "examples/json_view.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/json_view.output"
-    ```
-
-## See also
-
- [json_document](json_document.md) - the document type this view refers into
- [ordered_json_view](ordered_json_view.md) - the corresponding view for `ordered_json_document`
-
-## Version history
-
-Since version 3.13.0.
@@ -1,38 +0,0 @@
-# <small>nlohmann::</small>ordered_json_document
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using ordered_json_document = basic_json_document<ordered_json>;
-```
-
-This type is a [`basic_json_document`](basic_json_document/index.md) of the [`ordered_json`](ordered_json.md)
-specialization: [`materialize()`](basic_json_view/materialize.md) on one of its views preserves the insertion order
-of object keys, instead of sorting them like [`json_document`](json_document.md) does.
-
-## Examples
-
-??? example
-
-    The example below demonstrates how `ordered_json_document` preserves the insertion order of object keys when
-    materializing.
-
-    ```cpp
-    --8<-- "examples/ordered_json_document.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/ordered_json_document.output"
-    ```
-
-## See also
-
- [ordered_json_view](ordered_json_view.md) - a view of a value of an `ordered_json_document`
- [json_document](json_document.md) - the corresponding document for the default `json` specialization
- [Object Order](../features/object_order.md)
-
-## Version history
-
-Since version 3.13.0.
@@ -1,35 +0,0 @@
-# <small>nlohmann::</small>ordered_json_view
-
-<small>Defined in header `<nlohmann/json_view.hpp>`</small>
-
-```cpp
-using ordered_json_view = basic_json_view<ordered_json>;
-```
-
-This type is a [`basic_json_view`](basic_json_view/index.md) of a value of an
-[`ordered_json_document`](ordered_json_document.md).
-
-## Examples
-
-??? example
-
-    The example below demonstrates how to use the type `nlohmann::ordered_json_view`.
-
-    ```cpp
-    --8<-- "examples/ordered_json_view.cpp"
-    ```
-
-    Output:
-
-    ```json
-    --8<-- "examples/ordered_json_view.output"
-    ```
-
-## See also
-
- [ordered_json_document](ordered_json_document.md) - the document type this view refers into
- [json_view](json_view.md) - the corresponding view for `json_document`
-
-## Version history
-
-Since version 3.13.0.
@@ -1,19 +0,0 @@
-#include <iostream>
-#include <nlohmann/json.hpp>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // accept() behaves exactly like basic_json::accept(): the same inputs are
-    // accepted or rejected, with the same ignore_comments/ignore_trailing_commas
-    // options
-    std::cout << json_document::accept(R"({"a": 1})") << '\n';
-    std::cout << json_document::accept(R"({"a": 1,})") << '\n'; // trailing comma: rejected by default
-    std::cout << json_document::accept(R"({"a": 1,})", false, true) << '\n'; // ignore_trailing_commas
-
-    std::cout << (json_document::accept(R"({"a": 1})") == nlohmann::json::accept(R"({"a": 1})")) << '\n';
-}
@@ -1,4 +0,0 @@
-true
-false
-true
-true
@@ -1,23 +0,0 @@
-#include <iostream>
-#include <utility>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // the default constructor creates an empty (discarded) document
-    json_document empty;
-    std::cout << empty.is_discarded() << '\n';
-
-    // json_document is move-only: parse() itself returns by value (moved out),
-    // and a document can be moved again, e.g. into a container
-    json_document doc = json_document::parse(R"({"a": 1})");
-    json_document moved = std::move(doc);
-    std::cout << moved.root().is_object() << '\n';
-
-    // copying is disabled at compile time:
-    // json_document another = moved; // does not compile
-}
@@ -1,2 +0,0 @@
-true
-true
@@ -1,19 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // with allow_exceptions == false, a parse error produces a discarded
-    // document instead of throwing -- exactly like basic_json::parse()
-    json_document doc = json_document::parse(R"({"a": )", /* allow_exceptions */ false);
-    std::cout << doc.is_discarded() << '\n';
-    std::cout << doc.root().is_discarded() << '\n';
-
-    // a successful parse is never discarded
-    json_document ok = json_document::parse(R"({"a": 1})", false);
-    std::cout << ok.is_discarded() << '\n';
-}
@@ -1,3 +0,0 @@
-true
-true
-false
@@ -1,28 +0,0 @@
-#include <iostream>
-#include <string>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // long enough that copying it needs a real (heap) allocation, so the
-    // comparison below does not depend on the standard library's small
-    // string optimization threshold
-    const std::string text = std::string(200, ' ') + "[1, 2, 3, 4, 5]";
-
-    // memory_usage() is not portable across platforms/allocators/compilers, so
-    // compare it relatively instead of printing the raw byte count
-    json_document borrowed = json_document::parse(text);
-    json_document owned = json_document::parse_copy(text);
-
-    // the owned document additionally stores its own copy of the source text
-    std::cout << (owned.memory_usage() > borrowed.memory_usage()) << '\n';
-
-    // a document with more values needs a larger index
-    json_document small = json_document::parse(std::string("[1]"));
-    json_document large = json_document::parse(std::string("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]"));
-    std::cout << (large.memory_usage() > small.memory_usage()) << '\n';
-}
@@ -1,2 +0,0 @@
-true
-true
@@ -1,15 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    // node_count() is the size of the flat index: one 16-byte node per value,
-    // plus one per object key (values and keys are all the index stores)
-    json_document scalar = json_document::parse("42");
-    std::cout << scalar.node_count() << '\n';
-
-    json_document doc = json_document::parse(R"({"a": 1, "b": [1, 2]})");
-    std::cout << doc.node_count() << '\n';
-}
@@ -1,2 +0,0 @@
-1
-7
@@ -1,24 +0,0 @@
-#include <iostream>
-#include <string>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    std::string text = R"({"a": 1})";
-
-    // borrowed: the document only points into `text`; `text` must outlive it
-    json_document borrowed = json_document::parse(text);
-    std::cout << borrowed.owns_source() << '\n';
-
-    // owned: parse_copy() always takes its own copy
-    json_document copied = json_document::parse_copy(text);
-    std::cout << copied.owns_source() << '\n';
-
-    // owned: an rvalue std::string is moved in, not copied, but still owned
-    json_document moved_in = json_document::parse(std::string(text));
-    std::cout << moved_in.owns_source() << '\n';
-}
@@ -1,3 +0,0 @@
-false
-true
-true
@@ -1,33 +0,0 @@
-#include <iostream>
-#include <string>
-#include <nlohmann/json.hpp>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // an lvalue std::string is BORROWED: the document only stores a pointer
-    // into `text`, so `text` must outlive `borrowed`
-    std::string text = R"({"count": 3})";
-    json_document borrowed = json_document::parse(text);
-    std::cout << borrowed.owns_source() << '\n'; // false
-
-    // an rvalue std::string is MOVED into the document -- no copy of the text
-    json_document owned = json_document::parse(std::string(R"({"count": 3})"));
-    std::cout << owned.owns_source() << '\n'; // true
-
-    // errors are identical to basic_json::parse: same exception id, message,
-    // and position, because the library parser runs on the same bytes on a
-    // failing input
-    try
-    {
-        static_cast<void>(json_document::parse(R"({"count": )"));
-    }
-    catch (const nlohmann::json::parse_error& e)
-    {
-        std::cout << e.id << '\n';
-    }
-}
@@ -1,3 +0,0 @@
-false
-true
-101
@@ -1,22 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-json_document parse_from_temporary_buffer()
-{
-    char buffer[] = R"({"a": 1})";
-    // parse() would borrow `buffer`, which is about to go out of scope;
-    // parse_copy() takes its own copy instead, so the returned document does
-    // not depend on `buffer` afterward
-    return json_document::parse_copy(buffer);
-}
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    json_document doc = parse_from_temporary_buffer();
-    std::cout << doc.owns_source() << '\n';
-    std::cout << doc.root().is_object() << '\n';
-}
@@ -1,2 +0,0 @@
-true
-true
@@ -1,22 +0,0 @@
-#include <iostream>
-#include <vector>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // a JSON value embedded in a larger, non-null-terminated buffer (e.g. a
-    // slice received over the network)
-    std::vector<char> buffer = {'[', '1', ',', '2', ']', 'j', 'u', 'n', 'k'};
-
-    // a pointer pair is BORROWED, exactly like a byte container lvalue: the
-    // document points into the buffer. (From C++20 on, std::vector<char>
-    // iterators are borrowed as well; before, they are copied.)
-    const char* first = buffer.data();
-    json_document doc = json_document::parse(first, first + 5);
-    std::cout << doc.root().is_array() << ' ' << doc.root().size() << '\n';
-    std::cout << doc.owns_source() << '\n'; // false: borrowed
-}
@@ -1,2 +0,0 @@
-true 2
-false
@@ -1,31 +0,0 @@
-#include <iostream>
-#include <string>
-#include <vector>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    std::vector<std::string> messages =
-    {
-        R"({"id": 1})", R"({"id": 2, "tag": "x"})", R"({"id": 3})"
-    };
-
-    // parse into the same document over and over: its node index and decode
-    // buffer are reused instead of being freed and reallocated for each message
-    json_document doc;
-    std::size_t total = 0;
-    for (const auto& msg : messages)
-    {
-        doc.read(msg);
-        total += doc.root().size();
-    }
-    std::cout << total << '\n';
-
-    // read() can also change what kind of input is owned/borrowed between calls
-    doc.read(std::string(R"({"owned": true})"));
-    std::cout << doc.owns_source() << '\n';
-}
@@ -1,2 +0,0 @@
-4
-true
@@ -1,19 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    json_document doc = json_document::parse(R"({"greeting": "hi"})");
-    std::cout << doc.root().is_object() << '\n';
-
-    // root() is a cheap handle, not a copy: repeated calls observe the same value
-    std::cout << (doc.root().type() == doc.root().type()) << '\n';
-
-    // the root of a failed parse (allow_exceptions == false) is discarded
-    json_document failed = json_document::parse("{", false);
-    std::cout << failed.root().is_discarded() << '\n';
-}
@@ -1,3 +0,0 @@
-true
-true
-true
@@ -1,44 +0,0 @@
-#include <iostream>
-#include <sstream>
-#include <string>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // build a large array (many nodes), then read a small one into the same
-    // document: the index grown for the large input is still allocated
-    std::ostringstream big;
-    big << '[';
-    for (int i = 0; i < 500; ++i)
-    {
-        if (i != 0)
-        {
-            big << ',';
-        }
-        big << i;
-    }
-    big << ']';
-
-    json_document doc;
-    doc.read(big.str());
-    const std::size_t big_nodes = doc.node_count();
-
-    doc.read(std::string("[1]"));
-    std::cout << (doc.node_count() < big_nodes) << '\n'; // far fewer live nodes now
-    const std::size_t before = doc.memory_usage();
-
-    // shrink_to_fit() moves the index into a block sized for what is actually
-    // used. This INVALIDATES every view taken from this document before the
-    // call (they point into the old, now-freed block) -- take fresh ones from
-    // root() afterward.
-    doc.shrink_to_fit();
-    const std::size_t after = doc.memory_usage();
-    std::cout << (after <= before) << '\n';
-
-    // a freshly taken view is valid and correct
-    std::cout << doc.root().is_array() << ' ' << doc.root().size() << '\n';
-}
@@ -1,3 +0,0 @@
-true
-true
-true 1
@@ -1,20 +0,0 @@
-#include <iostream>
-#include <string>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    std::string text = R"({"a": 1})";
-    json_document doc = json_document::parse(text);
-
-    // source() is the parsed text, whether borrowed or owned
-    std::cout << (doc.source().size() == text.size()) << '\n';
-    std::cout << std::string(doc.source().data(), doc.source().size()) << '\n';
-
-    // for a borrowed document, source() points right into the caller's buffer
-    std::cout << (doc.source().data() == text.data()) << '\n';
-}
@@ -1,3 +0,0 @@
-true
-{"a": 1}
-true
@@ -1,17 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // the default constructor is the only public one: it creates an invalid
-    // (discarded) view, useful as a "no value yet" placeholder
-    nlohmann::json_view v;
-    std::cout << static_cast<bool>(v) << ' ' << v.is_discarded() << '\n';
-
-    // views are trivially copyable handles (two pointers); the document owns
-    // the actual data
-    nlohmann::json_view copy = v;
-    std::cout << static_cast<bool>(copy) << '\n';
-}
@@ -1,2 +0,0 @@
-false true
-false
@@ -1,33 +0,0 @@
-#include <array>
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    // three incoming messages; skip the ones that are not useful without ever
-    // building a nlohmann::json value for them
-    json_document heartbeat = json_document::parse("null");
-    json_document empty_batch = json_document::parse("[]");
-    json_document batch = json_document::parse(R"([{"id": 1}, {"id": 2}, {"id": 3}])");
-    std::array<const json_document*, 3> messages = {{&heartbeat, &empty_batch, &batch}};
-
-    for (const json_document* d : messages)
-    {
-        // is_array()/empty() only look at the flat index: a discarded
-        // heartbeat or an empty batch is never turned into a nlohmann::json
-        // value, so no per-element allocation happens for them
-        if (!d->root().is_array() || d->root().empty())
-        {
-            std::cout << "skipped\n";
-            continue;
-        }
-
-        // materialize() replays the subtree through the same SAX builder
-        // basic_json::parse() uses, so the result is exactly what
-        // basic_json::parse() would have produced for the same text
-        nlohmann::json value = d->root().materialize();
-        std::cout << value.dump() << '\n';
-    }
-}
@@ -1,3 +0,0 @@
-skipped
-skipped
-[{"id":1},{"id":2},{"id":3}]
@@ -1,22 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // decide whether a batch is worth processing before building any
-    // nlohmann::json value for it
-    json_document batch = json_document::parse(R"([1, 2, 3, 4, 5])");
-    json_document empty_batch = json_document::parse("[]");
-
-    std::cout << batch.root().empty() << ' ' << batch.root().size() << '\n';
-    std::cout << empty_batch.root().empty() << ' ' << empty_batch.root().size() << '\n';
-
-    // as for basic_json: null has size 0, every other scalar has size 1
-    json_document n = json_document::parse("null");
-    json_document s = json_document::parse(R"("hi")");
-    std::cout << n.root().size() << ' ' << s.root().size() << '\n';
-}
@@ -1,3 +0,0 @@
-false 5
-true 0
-0 1
@@ -1,33 +0,0 @@
-#include <iostream>
-#include <string>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // source_offset() points into source(): useful to report *where* in the
-    // original text a value came from (error messages, syntax highlighting,
-    // forwarding a sub-range verbatim, ...) without materializing it
-    json_document doc = json_document::parse(R"(  123)");
-    auto v = doc.root();
-    std::cout << v.source_offset() << ' '
-              << std::string(doc.source().data() + v.source_offset(), 3) << '\n';
-
-    // a string without escapes also stays in the source text
-    json_document plain = json_document::parse(R"("ab")");
-    std::cout << plain.source()[plain.root().source_offset()] << '\n';
-
-    // a string with escapes is decoded once into the document's own buffer, so
-    // there is no single byte range in source() to point at: source_offset()
-    // returns the "not applicable" sentinel
-    json_document escaped = json_document::parse(R"("a\nb")");
-    std::cout << (escaped.root().source_offset() == static_cast<std::size_t>(-1)) << '\n';
-
-    // a discarded view -- default-constructed, or the root of a failed parse
-    // with allow_exceptions == false -- has no offset either
-    json_document failed = json_document::parse("not json", false);
-    std::cout << (failed.root().source_offset() == static_cast<std::size_t>(-1)) << '\n';
-}
@@ -1,4 +0,0 @@
-2 123
-a
-true
-true
@@ -1,43 +0,0 @@
-#include <iostream>
-#include <nlohmann/json_view.hpp>
-
-using json_document = nlohmann::json_document;
-
-int main()
-{
-    std::cout << std::boolalpha;
-
-    // several incoming messages, one json_document per message. type() and
-    // is_*() only look at the flat index built by parse(); no nlohmann::json
-    // tree exists yet, and none is built unless materialize() is called
-    json_document d_null = json_document::parse("null");
-    json_document d_bool = json_document::parse("true");
-    json_document d_int = json_document::parse("-42");
-    json_document d_unsigned = json_document::parse("42");
-    json_document d_float = json_document::parse("4.2");
-    json_document d_string = json_document::parse(R"("hi")");
-    json_document d_array = json_document::parse("[1, 2, 3]");
-    json_document d_object = json_document::parse(R"({"a": 1})");
-
-    std::cout << d_null.root().is_null() << '\n';
-    std::cout << d_bool.root().is_boolean() << '\n';
-    std::cout << d_int.root().is_number() << ' ' << d_int.root().is_number_integer() << '\n';
-    std::cout << d_unsigned.root().is_number_unsigned() << '\n';
-    std::cout << d_float.root().is_number_float() << '\n';
-    std::cout << d_string.root().is_string() << '\n';
-    std::cout << d_array.root().is_array() << ' ' << d_array.root().is_structured() << '\n';
-    std::cout << d_object.root().is_object() << ' ' << d_object.root().is_primitive() << '\n';
-
-    // JSON text can never produce a binary value: is_binary() is always false
-    std::cout << d_array.root().is_binary() << '\n';
-
-    // a default-constructed view, and the root of a document that failed to
-    // parse without exceptions, are both discarded
-    nlohmann::json_view invalid;
-    json_document failed = json_document::parse("not json", /* allow_exceptions */ false);
-    std::cout << static_cast<bool>(invalid) << ' ' << invalid.is_discarded() << '\n';
-    std::cout << static_cast<bool>(failed.root()) << ' ' << failed.root().is_discarded() << '\n';
-
-    // type() returns the same value_t enumeration as basic_json::type()
-    std::cout << (d_object.root().type() == nlohmann::json::value_t::object) << '\n';
-}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Niels Lohmann	792853d725	Fix CI: clang-tidy and JSON_NOEXCEPTION in the #3989 changes ci_clang_tidy flagged nested conditional operators in the BON8 skip code and in remove_incomplete_utf8_sequence() (readability-avoid-nested-conditional-operator), and two branches with the same body in recover_string() (bugprone-branch-clone). Use if chains instead of the nested conditionals and merge the two branches into one condition; the short-circuit order is unchanged. ci_test_noexceptions aborted in the #3989 regression test: it compares the first recovered error with the message of the exception that from_cbor() and friends throw, and under JSON_NOEXCEPTION that call aborts instead of throwing. Guard binary_error_message() and its uses with #if !defined(JSON_NOEXCEPTION), as other tests in the suite do. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-29 16:42:57 +02:00
Niels Lohmann	4bdf1b7e74	Fix CI: no global std::string in the #3989 regression test The U+FFFD constant was a global std::string, which the clang CI build rejects with -Wglobal-constructors. It is now a function. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-29 09:27:46 +02:00
Niels Lohmann	b1e9d98e41	Merge remote-tracking branch 'origin/claude/fix-issue-3989-db7e45' into claude/fix-issue-3989-db7e45 Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-29 03:31:07 +02:00
Niels Lohmann	f855d257df	Fix CI: keep raw strings with backslashes out of test macros for MSVC MSVC stringizes the arguments of doctest's CHECK() so that a raw string literal becomes an ordinary one, and then reported the "\q" in the new alt_string recovery test as warning C4129, an error with /WX. The input is now a variable. The same pattern with "\u0000" in the parser's recovery test is replaced by a JSON value built from a std::string. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-29 03:30:39 +02:00
Niels Lohmann	3e683e9c04	Merge branch 'develop' into claude/fix-issue-3989-db7e45 Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-28 22:22:25 +02:00
Niels Lohmann	d1d84ed9af	Fix Flawfinder: format the BSON element type without snprintf Moving the report of an unsupported BSON element type into skip_unsupported_bson_element() moved its snprintf() call, which Flawfinder then reported as a new CWE-134 finding. The two hexadecimal digits are now computed directly; the message is unchanged. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-28 20:36:28 +02:00
Niels Lohmann	de8529f99b	Merge remote-tracking branch 'origin/develop' into claude/fix-issue-3989-db7e45 Signed-off-by: Niels Lohmann <mail@nlohmann.me> # Conflicts: # include/nlohmann/detail/input/binary_reader.hpp # single_include/nlohmann/json.hpp	2026-09-28 17:53:51 +02:00
Niels Lohmann	677794f076	Fix CI: recover numbers with the string operations every string_t has recover_number() used back(), pop_back(), front(), and find_first_of(const char*), which the minimal alt_string of unit-alt-string.cpp does not provide. Since the binary readers recover UBJSON/BJData high-precision numbers with it, from_ubjson() instantiated it, too, and the test no longer compiled. It now uses only size(), operator[], and resize(), and unit-alt-string.cpp recovers from errors in JSON text, UBJSON, and CBOR. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-28 12:17:11 +02:00
Niels Lohmann	437a95cfdb	Repair complete items in binary formats when parse_error() returns true (#3989 ) When the SAX parser asks to recover, the binary readers now repair an item whose end is known and read on after it, as RFC 8949, Section 5.3 describes for CBOR: - CBOR: tags are ignored, and simple values other than false, true, and null become null (RFC 8949, Section 6.1); a negative integer below the range of number_integer_t becomes the nearest floating-point number. - Strings that are not valid UTF-8 get U+FFFD for each ill-formed sequence, as in JSON text; so does a UBJSON/BJData char above 0x7F. - UBJSON/BJData high-precision numbers keep their longest valid beginning (via the lexer's recover_token()), or become infinity. - Members whose key is not a string are skipped (CBOR, MessagePack, BON8), like members without a key in JSON text. - BSON elements of types the library does not read (ObjectId, datetime, decimal128, ...) become null; a string without its terminator and a document whose size does not match are kept. Where the end of an item is unknown, reading stops as before, except that BSON skips to the end of the document, whose size it knows. The value read before such an error is now completed by the reader from its container stack, as the JSON parser does, instead of by a proxy SAX parser, which is removed. Like the parser, binary_reader gets an AllowRecovery template parameter, so that from_() compile without the new code. Tests: a table of repairs, numbers out of range, errors that stop, and a sweep over changed and removed bytes of eight encodings that checks balanced events and that the first error is the one from_() reports. All fuzzers now run a recovering checker; the binary ones also check that it reports an error exactly when from_*() fails. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 21:40:59 +02:00
Niels Lohmann	c8735246d0	Merge remote-tracking branch 'origin/develop' into claude/fix-issue-3989-db7e45 Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 21:02:38 +02:00
Niels Lohmann	9adb510a0d	Recover from parse errors when parse_error() returns true (#3989 ) The return value of json_sax::parse_error() was documented both as "must return false" and as "whether the parsing should continue", and the code just passed it on. For JSON text, parsing stopped anyway, but sax_parse() could report success for invalid input. The binary readers read on after the error, looping forever on a CBOR indefinite-length array without its end. Now false stops parsing, and true recovers from the error: - JSON text is repaired with the smallest local edit (insert a missing ',' or ':', remove a stray token, keep the readable part of a broken string or number, null for a value that cannot be read, close the innermost container at a wrong closing bracket and all of them at the end of the input), and parsing continues. The SAX events stay balanced, every key is followed by exactly one value, and each token is reported at most once. - The binary formats cannot resynchronize, so they stop, but complete the value read so far. sax_parse() returns false after any error. parse(), accept(), and the from_*() functions never recover and compile to the same code as before. Supersedes #4522. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 20:16:42 +02:00