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ruby--ruby/include/ruby/3/has/attribute.h
卜部昌平 c37a357c13 include what you use. 
This reverts commit 443389effc.
This reverts commit d94960f22e.

Inclusion of header files must be explicit.  Every file shall directly
include what is necessary.

https://github.com/include-what-you-use/include-what-you-use says:

> When every file includes what it uses, then it is possible to edit any
> file and remove unused headers, without fear of accidentally breaking
> the upwards dependencies of that file. It also becomes easy to
> automatically track and update dependencies in the source code.

Though we don't use iwyu itself, the principle quoted above is a good
thing that we can agree.

Now that include guards were added to every and all of the headers
inside of our project this changeset does not increase compile time, at
least on my machine.
2020-04-13 16:06:00 +09:00

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#ifndef RUBY3_HAS_ATTRIBUTE_H /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY3_HAS_ATTRIBUTE_H
/**
* @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(__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_, _)+0)
# ifdef ALWAYS_INLINE
# define RUBY3_HAS_ATTRIBUTE_always_inline 1
# endif
# ifdef FUNC_CDECL
# define RUBY3_HAS_ATTRIBUTE_cdecl 1
# endif
# ifdef CONSTFUNC
# define RUBY3_HAS_ATTRIBUTE_const 1
# endif
# ifdef DEPRECATED
# define RUBY3_HAS_ATTRIBUTE_deprecated 1
# endif
# ifdef ERRORFUNC
# define RUBY3_HAS_ATTRIBUTE_error 1
# endif
# ifdef FUNC_FASTCALL
# define RUBY3_HAS_ATTRIBUTE_fastcall 1
# endif
# ifdef PUREFUNC
# define RUBY3_HAS_ATTRIBUTE_pure 1
# endif
# ifdef NO_ADDRESS_SAFETY_ANALYSIS
# define RUBY3_HAS_ATTRIBUTE_no_address_safety_analysis 1
# endif
# ifdef NO_SANITIZE
# define RUBY3_HAS_ATTRIBUTE_no_sanitize 1
# endif
# ifdef NO_SANITIZE_ADDRESS
# define RUBY3_HAS_ATTRIBUTE_no_sanitize_address 1
# endif
# ifdef NOINLINE
# define RUBY3_HAS_ATTRIBUTE_noinline 1
# endif
# ifdef RUBY3_FUNC_NONNULL
# define RUBY3_HAS_ATTRIBUTE_nonnull 1
# endif
# ifdef NORETURN
# define RUBY3_HAS_ATTRIBUTE_noreturn 1
# endif
# ifdef FUNC_OPTIMIZED
# define RUBY3_HAS_ATTRIBUTE_optimize 1
# endif
# ifdef FUNC_STDCALL
# define RUBY3_HAS_ATTRIBUTE_stdcall 1
# endif
# ifdef MAYBE_UNUSED
# define RUBY3_HAS_ATTRIBUTE_unused 1
# endif
# ifdef WARN_UNUSED_RESULT
# define RUBY3_HAS_ATTRIBUTE_warn_unused_result 1
# endif
# ifdef WARNINGFUNC
# define RUBY3_HAS_ATTRIBUTE_warning 1
# endif
# ifdef WEAK
# define RUBY3_HAS_ATTRIBUTE_weak 1
# endif
#endif
#endif /* RUBY3_HAS_ATTRIBUTE_H */
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