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Diffstat (limited to 'include/ruby/3/has/attribute.h')
| -rw-r--r-- | include/ruby/3/has/attribute.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/include/ruby/3/has/attribute.h b/include/ruby/3/has/attribute.h new file mode 100644 index 0000000000..229e092b30 --- /dev/null +++ b/include/ruby/3/has/attribute.h @@ -0,0 +1,154 @@ +/** \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 |