🔨 some clean up

develop/adl_serializer.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_ADL_SERIALIZER_HPP
-#define NLOHMANN_JSON_ADL_SERIALIZER_HPP
+#pragma once
 
 #include <utility>
 
@@ -44,5 +43,3 @@ struct adl_serializer
     }
 };
 }
-
-#endif

develop/detail/conversions/from_json.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_CONVERSIONS_FROM_JSON_HPP
-#define NLOHMANN_JSON_DETAIL_CONVERSIONS_FROM_JSON_HPP
+#pragma once
 
 #include <algorithm> // transform
 #include <array> // array
@@ -314,5 +313,3 @@ namespace
 constexpr const auto& from_json = detail::static_const<detail::from_json_fn>::value;
 }
 }
-
-#endif

develop/detail/conversions/to_json.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_CONVERSIONS_TO_JSON_HPP
-#define NLOHMANN_JSON_DETAIL_CONVERSIONS_TO_JSON_HPP
+#pragma once
 
 #include <ciso646> // or, and, not
 #include <iterator> // begin, end
@@ -337,5 +336,3 @@ namespace
 constexpr const auto& to_json = detail::static_const<detail::to_json_fn>::value;
 }
 }
-
-#endif

develop/detail/iterators/internal_iterator.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_INTERNAL_ITERATOR_HPP
-#define NLOHMANN_JSON_DETAIL_ITERATORS_INTERNAL_ITERATOR_HPP
+#pragma once
 
 #include "detail/iterators/primitive_iterator.hpp"
 
@@ -24,5 +23,3 @@ template<typename BasicJsonType> struct internal_iterator
 };
 }
 }
-
-#endif

develop/detail/iterators/iter_impl.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_ITER_IMPL_HPP
-#define NLOHMANN_JSON_DETAIL_ITERATORS_ITER_IMPL_HPP
+#pragma once
 
 #include <ciso646> // not
 #include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
@@ -613,5 +612,3 @@ class iter_impl
 };
 }
 }
-
-#endif

develop/detail/iterators/iteration_proxy.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_ITERATION_PROXY_HPP
-#define NLOHMANN_JSON_DETAIL_ITERATORS_ITERATION_PROXY_HPP
+#pragma once
 
 #include <cstddef> // size_t
 #include <string> // string, to_string
@@ -97,5 +96,3 @@ template<typename IteratorType> class iteration_proxy
 };
 }
 }
-
-#endif

develop/detail/iterators/json_reverse_iterator.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_JSON_REVERSE_ITERATOR_HPP
-#define NLOHMANN_JSON_DETAIL_ITERATORS_JSON_REVERSE_ITERATOR_HPP
+#pragma once
 
 #include <cstddef> // ptrdiff_t
 #include <iterator> // reverse_iterator
@@ -118,5 +117,3 @@ class json_reverse_iterator : public std::reverse_iterator<Base>
 };
 }
 }
-
-#endif

develop/detail/iterators/primitive_iterator.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_ITERATORS_PRIMITIVE_ITERATOR_HPP
-#define NLOHMANN_JSON_DETAIL_ITERATORS_PRIMITIVE_ITERATOR_HPP
+#pragma once
 
 #include <ciso646> // not
 #include <cstddef> // ptrdiff_t
@@ -127,5 +126,3 @@ class primitive_iterator_t
 };
 }
 }
-
-#endif

develop/detail/json_ref.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_JSON_REF_HPP
-#define NLOHMANN_JSON_DETAIL_JSON_REF_HPP
+#pragma once
 
 #include <initializer_list>
 #include <utility>
@@ -62,5 +61,3 @@ class json_ref
 };
 }
 }
-
-#endif

develop/detail/macro_scope.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_MACRO_SCOPE_HPP
-#define NLOHMANN_JSON_MACRO_SCOPE_HPP
+#pragma once
 
 #include <ciso646> // not
 
@@ -102,5 +101,3 @@ contains a `mapped_type`, whereas `std::vector` fails the test.
         static constexpr bool value =                                         \
                 std::is_integral<decltype(detect(std::declval<T>()))>::value; \
     }
-
-#endif

develop/detail/macro_unscope.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_MACRO_UNSCOPE_HPP
-#define NLOHMANN_JSON_DETAIL_MACRO_UNSCOPE_HPP
+#pragma once
 
 // restore GCC/clang diagnostic settings
 #if defined(__clang__) || defined(__GNUC__) || defined(__GNUG__)
@@ -21,5 +20,3 @@
 #undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
 #undef NLOHMANN_BASIC_JSON_TPL
 #undef NLOHMANN_JSON_HAS_HELPER
-
-#endif

develop/detail/meta.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_META_HPP
-#define NLOHMANN_JSON_DETAIL_META_HPP
+#pragma once
 
 #include <ciso646> // not
 #include <cstddef> // size_t
@@ -233,5 +232,3 @@ template<typename T>
 constexpr T static_const<T>::value;
 }
 }
-
-#endif

develop/detail/parsing/binary_reader.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_BINARY_READER_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_BINARY_READER_HPP
+#pragma once
 
 #include <algorithm> // generate_n
 #include <array> // array
@@ -1089,5 +1088,3 @@ class binary_reader
 };
 }
 }
-
-#endif

develop/detail/parsing/binary_writer.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_BINARY_WRITER_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_BINARY_WRITER_HPP
+#pragma once
 
 #include <algorithm> // reverse
 #include <array> // array
@@ -554,5 +553,3 @@ class binary_writer
 };
 }
 }
-
-#endif

develop/detail/parsing/input_adapters.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_INPUT_ADAPTERS_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_INPUT_ADAPTERS_HPP
+#pragma once
 
 #include <algorithm> // min
 #include <array> // array
@@ -261,5 +260,3 @@ class input_adapter
 };
 }
 }
-
-#endif

develop/detail/parsing/lexer.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_LEXER_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_LEXER_HPP
+#pragma once
 
 #include <clocale> // localeconv
 #include <cstddef> // size_t
@@ -1275,5 +1274,3 @@ scan_number_done:
 };
 }
 }
-
-#endif

develop/detail/parsing/output_adapters.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_OUTPUT_ADAPTERS_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_OUTPUT_ADAPTERS_HPP
+#pragma once
 
 #include <algorithm> // copy
 #include <cstddef> // size_t
@@ -112,5 +111,3 @@ class output_adapter
 };
 }
 }
-
-#endif

develop/detail/parsing/parser.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_PARSING_PARSER_HPP
-#define NLOHMANN_JSON_DETAIL_PARSING_PARSER_HPP
+#pragma once
 
 #include <cassert> // assert
 #include <cmath> // isfinite
@@ -588,5 +587,3 @@ class parser
 };
 }
 }
-
-#endif

develop/detail/serializer.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_SERIALIZER_HPP
-#define NLOHMANN_JSON_DETAIL_SERIALIZER_HPP
+#pragma once
 
 #include <algorithm> // reverse, remove, fill, find, none_of
 #include <array> // array
@@ -793,5 +792,3 @@ class serializer
 };
 }
 }
-
-#endif

develop/detail/value_t.hpp

@@ -1,5 +1,4 @@
-#ifndef NLOHMANN_JSON_DETAIL_VALUE_T_HPP
-#define NLOHMANN_JSON_DETAIL_VALUE_T_HPP
+#pragma once
 
 #include <array> // array
 #include <ciso646> // and
@@ -75,5 +74,3 @@ inline bool operator<(const value_t lhs, const value_t rhs) noexcept
 }
 }
 }
-
-#endif