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https://github.com/nlohmann/json.git
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Niels Lohmann
1ab017bbfe
Internal parts of the zero-copy view (#5295), under detail/view and not included by json.hpp, so that users of json.hpp compile nothing of it: - macro_scope.hpp/macro_unscope.hpp: the few macros the view needs, under its own prefix (json.hpp undefines its own at its end); the throw macro honors JSON_NOEXCEPTION and JSON_THROW_USER like JSON_THROW - string_ref.hpp: std::string_view from C++17 on, else a small stand-in - node.hpp: the 16-byte node of the index; its kinds are value_t values (checked by a static_assert) - document_data.hpp: the storage of a parsed document (node array, decode arena, owned input) - scan.hpp: string and digit scanning with unrolled checks at fixed offsets (after yyjson) and the library's SWAR and UTF-8 checks, independent of the byte order Signed-off-by: Niels Lohmann <mail@nlohmann.me>
62 lines
2.5 KiB
C++
62 lines
2.5 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#pragma once
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// Macros of json_view.hpp and its detail headers. json.hpp undefines its own
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// macros at its end (macro_unscope.hpp), so the view defines the few it needs
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// under its own prefix; json_view.hpp undefines them all at its end
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// (detail/view/macro_unscope.hpp). Configuration that json.hpp undefines is
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// read from detail::abi_config instead.
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#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
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#define NLOHMANN_VIEW_HAS_CPP_17 1
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#else
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#define NLOHMANN_VIEW_HAS_CPP_17 0
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#endif
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#if defined(__GNUC__) || defined(__clang__)
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#define NLOHMANN_VIEW_LIKELY(x) __builtin_expect(!!(x), 1)
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#define NLOHMANN_VIEW_UNLIKELY(x) __builtin_expect(!!(x), 0)
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#define NLOHMANN_VIEW_ALWAYS_INLINE inline __attribute__((always_inline))
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#define NLOHMANN_VIEW_NOINLINE __attribute__((noinline))
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#elif defined(_MSC_VER)
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#define NLOHMANN_VIEW_LIKELY(x) (x)
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#define NLOHMANN_VIEW_UNLIKELY(x) (x)
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#define NLOHMANN_VIEW_ALWAYS_INLINE __forceinline
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#define NLOHMANN_VIEW_NOINLINE __declspec(noinline)
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#else
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#define NLOHMANN_VIEW_LIKELY(x) (x)
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#define NLOHMANN_VIEW_UNLIKELY(x) (x)
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#define NLOHMANN_VIEW_ALWAYS_INLINE inline
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#define NLOHMANN_VIEW_NOINLINE
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#endif
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// exceptions as in json.hpp (JSON_NOEXCEPTION, JSON_THROW_USER)
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#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
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#define NLOHMANN_VIEW_THROW(exception) throw exception
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#else
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#include <cstdlib>
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#define NLOHMANN_VIEW_THROW(exception) std::abort()
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#endif
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#if defined(JSON_THROW_USER)
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#undef NLOHMANN_VIEW_THROW
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#define NLOHMANN_VIEW_THROW JSON_THROW_USER
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#endif
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// the parser stores a node's first word at once where the layout of `node` is
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// known to be little-endian (MSVC targets are); elsewhere field by field
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#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || defined(_MSC_VER)
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#define NLOHMANN_VIEW_LITTLE_ENDIAN 1
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#else
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#define NLOHMANN_VIEW_LITTLE_ENDIAN 0
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#endif
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/// sixteen checks at fixed offsets 0..15
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#define NLOHMANN_VIEW_REPEAT16(X) X(0) X(1) X(2) X(3) X(4) X(5) X(6) X(7) X(8) X(9) X(10) X(11) X(12) X(13) X(14) X(15)
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