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ruby/internal/compilers.h

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add #include guard hack According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
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#ifndef INTERNAL_COMPILERS_H /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_COMPILERS_H
/**
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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* @author Ruby developers <ruby-core@ruby-lang.org>
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
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* @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.
Update compilers.h [ci skip]
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* @brief Internal header absorbing C compiler differences.
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
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*/
sed -i 's|ruby/impl|ruby/internal|' To fix build failures.
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#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/attribute.h"
#include "ruby/internal/has/builtin.h"
#include "ruby/internal/has/c_attribute.h"
#include "ruby/internal/has/declspec_attribute.h"
#include "ruby/internal/has/extension.h"
#include "ruby/internal/has/feature.h"
#include "ruby/internal/has/warning.h"
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 07:28:13 +03:00
#include "ruby/backward/2/gcc_version_since.h"
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
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sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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#define MSC_VERSION_SINCE(_) RBIMPL_COMPILER_SINCE(MSVC, (_) / 100, (_) % 100, 0)
#define MSC_VERSION_BEFORE(_) RBIMPL_COMPILER_BEFORE(MSVC, (_) / 100, (_) % 100, 0)
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
2019-12-02 08:58:43 +03:00
#ifndef __has_attribute
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define __has_attribute(...) RBIMPL_HAS_ATTRIBUTE(__VA_ARGS__)
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
2019-12-02 08:58:43 +03:00
#endif
#ifndef __has_c_attribute
# /* As of writing everything that lacks __has_c_attribute also completely
# * lacks C2x attributes as well. Might change in future? */
# define __has_c_attribute(...) 0
#endif
#ifndef __has_declspec_attribute
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define __has_declspec_attribute(...) RBIMPL_HAS_DECLSPEC_ATTRIBUTE(__VA_ARGS__)
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
2019-12-02 08:58:43 +03:00
#endif
#ifndef __has_builtin
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define __has_builtin(...) RBIMPL_HAS_BUILTIN(__VA_ARGS__)
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
#endif
#ifndef __has_feature
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 09:52:56 +03:00
# define __has_feature(...) RBIMPL_HAS_FEATURE(__VA_ARGS__)
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
#endif
#ifndef __has_extension
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 09:52:56 +03:00
# define __has_extension(...) RBIMPL_HAS_EXTENSION(__VA_ARGS__)
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
#endif
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
2019-12-02 08:58:43 +03:00
#ifndef __has_warning
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 09:52:56 +03:00
# define __has_warning(...) RBIMPL_HAS_WARNING(__VA_ARGS__)
add several __has_something macro With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec().
2019-12-02 08:58:43 +03:00
#endif
#ifndef __GNUC__
# define __extension__ /* void */
#endif
#ifndef MAYBE_UNUSED
# define MAYBE_UNUSED(x) x
#endif
#ifndef WARN_UNUSED_RESULT
# define WARN_UNUSED_RESULT(x) x
#endif
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
#define RB_OBJ_BUILTIN_TYPE(obj) rb_obj_builtin_type(obj)
#define OBJ_BUILTIN_TYPE(obj) RB_OBJ_BUILTIN_TYPE(obj)
#ifdef __GNUC__
#define rb_obj_builtin_type(obj) \
__extension__({ \
VALUE arg_obj = (obj); \
RB_SPECIAL_CONST_P(arg_obj) ? -1 : \
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 07:28:13 +03:00
(int)RB_BUILTIN_TYPE(arg_obj); \
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
})
#else
add missing #include
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# include "ruby/ruby.h"
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
static inline int
rb_obj_builtin_type(VALUE obj)
{
return RB_SPECIAL_CONST_P(obj) ? -1 :
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 07:28:13 +03:00
(int)RB_BUILTIN_TYPE(obj);
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
}
#endif
/* A macro for defining a flexible array, like: VALUE ary[FLEX_ARY_LEN]; */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
# define FLEX_ARY_LEN /* VALUE ary[]; */
#elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
# define FLEX_ARY_LEN 0 /* VALUE ary[0]; */
#else
# define FLEX_ARY_LEN 1 /* VALUE ary[1]; */
#endif
/*
* For declaring bitfields out of non-unsigned int types:
* struct date {
* BITFIELD(enum months, month, 4);
* ...
* };
*/
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
# define BITFIELD(type, name, size) type name : size
#else
# define BITFIELD(type, name, size) unsigned int name : size
#endif
#endif /* INTERNAL_COMPILERS_H */