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mdbx: переделка костыля namespace::attr для MSVC и Apple.

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Леонид Юрьев (Leonid Yuriev) 2024-11-19 01:24:40 +03:00
parent ddea36c54a
commit 5815ff2ef7
1 changed files with 20 additions and 21 deletions
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41
mdbx.h
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@ -191,28 +191,31 @@ typedef mode_t mdbx_mode_t;
#ifndef __has_c_attribute
#define __has_c_attribute(x) (0)
#define __has_c_attribute_qualified(x) 0
#elif !defined(__STDC_VERSION__) || __STDC_VERSION__ < 202311L
#define __has_c_attribute_qualified(x) 0
#elif defined(_MSC_VER)
/* MSVC don't support `namespace::attr` syntax */
#define __has_c_attribute_qualified(x) 0
#else
#define __has_c_attribute_qualified(x) __has_c_attribute(x)
#endif /* __has_c_attribute */
#ifndef __has_cpp_attribute
#define __has_cpp_attribute(x) 0
#endif /* __has_cpp_attribute */
#ifndef __has_CXX_attribute
#if defined(__cplusplus) && \
(!defined(_MSC_VER) || defined(__clang__) || _MSC_VER >= 1942)
#define __has_CXX_attribute(x) __has_cpp_attribute(x)
#define __has_cpp_attribute_qualified(x) 0
#elif defined(_MSC_VER)
/* MSVC don't support `namespace::attr` syntax */
#define __has_cpp_attribute_qualified(x) 0
#else
#define __has_CXX_attribute(x) 0
#endif
#endif /* __has_CXX_attribute */
#define __has_cpp_attribute_qualified(x) __has_cpp_attribute(x)
#endif /* __has_cpp_attribute */
#ifndef __has_C23_or_CXX_attribute
#if defined(__cplusplus)
#define __has_C23_or_CXX_attribute(x) __has_CXX_attribute(x)
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ > 202311L
#define __has_C23_or_CXX_attribute(x) __has_c_attribute(x)
#define __has_C23_or_CXX_attribute(x) __has_cpp_attribute_qualified(x)
#else
#define __has_C23_or_CXX_attribute(x) 0
#define __has_C23_or_CXX_attribute(x) __has_c_attribute_qualified(x)
#endif
#endif /* __has_C23_or_CXX_attribute */
@ -240,9 +243,7 @@ typedef mode_t mdbx_mode_t;
* These functions should be declared with the attribute pure. */
#if defined(DOXYGEN)
#define MDBX_PURE_FUNCTION [[gnu::pure]]
#elif __has_C23_or_CXX_attribute(gnu::pure) && \
(!defined(__apple_build_version__) || !defined(__clang_major__) || \
__clang_major__ > 17)
#elif __has_C23_or_CXX_attribute(gnu::pure)
#define MDBX_PURE_FUNCTION [[gnu::pure]]
#elif (defined(__GNUC__) || __has_attribute(__pure__)) && \
(!defined(__clang__) /* https://bugs.llvm.org/show_bug.cgi?id=43275 */ || \
@ -266,7 +267,7 @@ typedef mode_t mdbx_mode_t;
#elif defined(__GNUC__) || \
(__has_attribute(__pure__) && __has_attribute(__nothrow__))
#define MDBX_NOTHROW_PURE_FUNCTION __attribute__((__pure__, __nothrow__))
#elif __has_CXX_attribute(pure)
#elif __has_cpp_attribute(pure)
#define MDBX_NOTHROW_PURE_FUNCTION [[pure]]
#else
#define MDBX_NOTHROW_PURE_FUNCTION
@ -284,9 +285,7 @@ typedef mode_t mdbx_mode_t;
* It does not make sense for a const function to return void. */
#if defined(DOXYGEN)
#define MDBX_CONST_FUNCTION [[gnu::const]]
#elif __has_C23_or_CXX_attribute(gnu::const) && \
(!defined(__apple_build_version__) || !defined(__clang_major__) || \
__clang_major__ > 17)
#elif __has_C23_or_CXX_attribute(gnu::const)
#define MDBX_CONST_FUNCTION [[gnu::const]]
#elif (defined(__GNUC__) || __has_attribute(__const__)) && \
(!defined(__clang__) /* https://bugs.llvm.org/show_bug.cgi?id=43275 */ || \
@ -310,7 +309,7 @@ typedef mode_t mdbx_mode_t;
#elif defined(__GNUC__) || \
(__has_attribute(__const__) && __has_attribute(__nothrow__))
#define MDBX_NOTHROW_CONST_FUNCTION __attribute__((__const__, __nothrow__))
#elif __has_CXX_attribute(const)
#elif __has_cpp_attribute_qualified(const)
#define MDBX_NOTHROW_CONST_FUNCTION [[const]]
#else
#define MDBX_NOTHROW_CONST_FUNCTION MDBX_NOTHROW_PURE_FUNCTION