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ruby--ruby/include/ruby/3/has/attribute.h
2020-04-08 13:28:13 +09:00

154 lines
7.8 KiB
C++

/** \noop-*-C++-*-vi:ft=cpp
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Defines #RUBY3_HAS_ATTRIBUTE.
*/
#include "ruby/3/config.h"
#include "ruby/3/compiler_since.h"
#include "ruby/3/token_paste.h"
/** Wraps (or simulates) `__has_attribute`. */
#if defined(RUBY3_HAS_ATTRIBUTE)
# /* Take that. */
#elif defined(__has_attribute)
# define RUBY3_HAS_ATTRIBUTE(_) __has_attribute(_)
#elif RUBY3_COMPILER_IS(GCC)
# /* GCC <= 4 lack __has_attribute predefined macro, while have attributes
# * themselves. We can simulate the macro like the following: */
# define RUBY3_HAS_ATTRIBUTE(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_ATTRIBUTE_, _)
# define RUBY3_HAS_ATTRIBUTE_aligned RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_alloc_size RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_artificial RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_always_inline RUBY3_COMPILER_SINCE(GCC, 3, 1, 0)
# define RUBY3_HAS_ATTRIBUTE_cdecl RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_cold RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_const RUBY3_COMPILER_SINCE(GCC, 2, 6, 0)
# define RUBY3_HAS_ATTRIBUTE_deprecated RUBY3_COMPILER_SINCE(GCC, 3, 1, 0)
# define RUBY3_HAS_ATTRIBUTE_dllexport RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_dllimport RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_error RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_format RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_hot RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_leaf RUBY3_COMPILER_SINCE(GCC, 4, 6, 0)
# define RUBY3_HAS_ATTRIBUTE_malloc RUBY3_COMPILER_SINCE(GCC, 3, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_no_address_safety_analysis RUBY3_COMPILER_SINCE(GCC, 4, 8, 0)
# define RUBY3_HAS_ATTRIBUTE_no_sanitize_address RUBY3_COMPILER_SINCE(GCC, 4, 8, 0)
# define RUBY3_HAS_ATTRIBUTE_no_sanitize_undefined RUBY3_COMPILER_SINCE(GCC, 4, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_noinline RUBY3_COMPILER_SINCE(GCC, 3, 1, 0)
# define RUBY3_HAS_ATTRIBUTE_nonnull RUBY3_COMPILER_SINCE(GCC, 3, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_noreturn RUBY3_COMPILER_SINCE(GCC, 2, 5, 0)
# define RUBY3_HAS_ATTRIBUTE_nothrow RUBY3_COMPILER_SINCE(GCC, 3, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_pure RUBY3_COMPILER_SINCE(GCC, 2,96, 0)
# define RUBY3_HAS_ATTRIBUTE_returns_nonnull RUBY3_COMPILER_SINCE(GCC, 4, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_returns_twice RUBY3_COMPILER_SINCE(GCC, 4, 1, 0)
# define RUBY3_HAS_ATTRIBUTE_stdcall RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_unused RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_ATTRIBUTE_visibility RUBY3_COMPILER_SINCE(GCC, 3, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_warn_unused_result RUBY3_COMPILER_SINCE(GCC, 3, 4, 0)
# define RUBY3_HAS_ATTRIBUTE_warning RUBY3_COMPILER_SINCE(GCC, 4, 3, 0)
# define RUBY3_HAS_ATTRIBUTE_weak RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# /* Note that "0, 0, 0" might be inaccurate. */
#elif RUBY3_COMPILER_IS(SunPro)
# /* Oracle Solaris Studio 12.4 (cc version 5.11) introduced __has_attribute.
# * Before that, following attributes were available. */
# /* See https://docs.oracle.com/cd/F24633_01/index.html */
# define RUBY3_HAS_ATTRIBUTE(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_ATTRIBUTE_, _)
# define RUBY3_HAS_ATTRIBUTE_alias RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_aligned RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_always_inline RUBY3_COMPILER_SINCE(SunPro, 5, 10, 0)
# define RUBY3_HAS_ATTRIBUTE_const RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_constructor RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_destructor RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_malloc RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_noinline RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_noreturn RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_packed RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_pure RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_returns_twice RUBY3_COMPILER_SINCE(SunPro, 5, 10, 0)
# define RUBY3_HAS_ATTRIBUTE_vector_size RUBY3_COMPILER_SINCE(SunPro, 5, 10, 0)
# define RUBY3_HAS_ATTRIBUTE_visibility RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
# define RUBY3_HAS_ATTRIBUTE_weak RUBY3_COMPILER_SINCE(SunPro, 5, 9, 0)
#elif defined (_MSC_VER)
# define RUBY3_HAS_ATTRIBUTE(_) 0
# /* Fallback below doesn't work: see win32/Makefile.sub */
#else
# /* Take config.h definition when available. */
# define RUBY3_HAS_ATTRIBUTE(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_ATTRIBUTE_, _)
# ifdef ALWAYS_INLINE
# define RUBY3_HAS_ATTRIBUTE_always_inline
# endif
# ifdef FUNC_CDECL
# define RUBY3_HAS_ATTRIBUTE_cdecl
# endif
# ifdef CONSTFUNC
# define RUBY3_HAS_ATTRIBUTE_const
# endif
# ifdef DEPRECATED
# define RUBY3_HAS_ATTRIBUTE_deprecated
# endif
# ifdef ERRORFUNC
# define RUBY3_HAS_ATTRIBUTE_error
# endif
# ifdef FUNC_FASTCALL
# define RUBY3_HAS_ATTRIBUTE_fastcall
# endif
# ifdef PUREFUNC
# define RUBY3_HAS_ATTRIBUTE_pure
# endif
# ifdef NO_ADDRESS_SAFETY_ANALYSIS
# define RUBY3_HAS_ATTRIBUTE_no_address_safety_analysis
# endif
# ifdef NO_SANITIZE
# define RUBY3_HAS_ATTRIBUTE_no_sanitize
# endif
# ifdef NO_SANITIZE_ADDRESS
# define RUBY3_HAS_ATTRIBUTE_no_sanitize_address
# endif
# ifdef NOINLINE
# define RUBY3_HAS_ATTRIBUTE_noinline
# endif
# ifdef RUBY3_FUNC_NONNULL
# define RUBY3_HAS_ATTRIBUTE_nonnull
# endif
# ifdef NORETURN
# define RUBY3_HAS_ATTRIBUTE_noreturn
# endif
# ifdef FUNC_OPTIMIZED
# define RUBY3_HAS_ATTRIBUTE_optimize
# endif
# ifdef FUNC_STDCALL
# define RUBY3_HAS_ATTRIBUTE_stdcall
# endif
# ifdef MAYBE_UNUSED
# define RUBY3_HAS_ATTRIBUTE_unused
# endif
# ifdef WARN_UNUSED_RESULT
# define RUBY3_HAS_ATTRIBUTE_warn_unused_result
# endif
# ifdef WARNINGFUNC
# define RUBY3_HAS_ATTRIBUTE_warning
# endif
# ifdef WEAK
# define RUBY3_HAS_ATTRIBUTE_weak
# endif
#endif