108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
#ifndef INTERNAL_COMPILERS_H /*-*-C-*-vi:se ft=c:*/
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#define INTERNAL_COMPILERS_H
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/**
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @brief Internal header absorbing C compiler differences.
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*/
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#include "ruby/internal/compiler_since.h"
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#include "ruby/internal/has/attribute.h"
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#include "ruby/internal/has/builtin.h"
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#include "ruby/internal/has/c_attribute.h"
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#include "ruby/internal/has/declspec_attribute.h"
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#include "ruby/internal/has/extension.h"
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#include "ruby/internal/has/feature.h"
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#include "ruby/internal/has/warning.h"
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#include "ruby/backward/2/gcc_version_since.h"
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#define MSC_VERSION_SINCE(_) RBIMPL_COMPILER_SINCE(MSVC, (_) / 100, (_) % 100, 0)
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#define MSC_VERSION_BEFORE(_) RBIMPL_COMPILER_BEFORE(MSVC, (_) / 100, (_) % 100, 0)
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#ifndef __has_attribute
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# define __has_attribute(...) RBIMPL_HAS_ATTRIBUTE(__VA_ARGS__)
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#endif
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#ifndef __has_c_attribute
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# /* As of writing everything that lacks __has_c_attribute also completely
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# * lacks C2x attributes as well. Might change in future? */
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# define __has_c_attribute(...) 0
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#endif
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#ifndef __has_declspec_attribute
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# define __has_declspec_attribute(...) RBIMPL_HAS_DECLSPEC_ATTRIBUTE(__VA_ARGS__)
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#endif
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#ifndef __has_builtin
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# define __has_builtin(...) RBIMPL_HAS_BUILTIN(__VA_ARGS__)
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#endif
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#ifndef __has_feature
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# define __has_feature(...) RBIMPL_HAS_FEATURE(__VA_ARGS__)
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#endif
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#ifndef __has_extension
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# define __has_extension(...) RBIMPL_HAS_EXTENSION(__VA_ARGS__)
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#endif
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#ifndef __has_warning
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# define __has_warning(...) RBIMPL_HAS_WARNING(__VA_ARGS__)
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#endif
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#ifndef __GNUC__
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# define __extension__ /* void */
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#endif
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#ifndef MAYBE_UNUSED
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# define MAYBE_UNUSED(x) x
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#endif
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#ifndef WARN_UNUSED_RESULT
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# define WARN_UNUSED_RESULT(x) x
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#endif
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#define RB_OBJ_BUILTIN_TYPE(obj) rb_obj_builtin_type(obj)
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#define OBJ_BUILTIN_TYPE(obj) RB_OBJ_BUILTIN_TYPE(obj)
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#ifdef __GNUC__
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#define rb_obj_builtin_type(obj) \
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__extension__({ \
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VALUE arg_obj = (obj); \
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RB_SPECIAL_CONST_P(arg_obj) ? -1 : \
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(int)RB_BUILTIN_TYPE(arg_obj); \
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})
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#else
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# include "ruby/ruby.h"
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static inline int
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rb_obj_builtin_type(VALUE obj)
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{
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return RB_SPECIAL_CONST_P(obj) ? -1 :
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(int)RB_BUILTIN_TYPE(obj);
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}
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#endif
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/* A macro for defining a flexible array, like: VALUE ary[FLEX_ARY_LEN]; */
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define FLEX_ARY_LEN /* VALUE ary[]; */
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#elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
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# define FLEX_ARY_LEN 0 /* VALUE ary[0]; */
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#else
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# define FLEX_ARY_LEN 1 /* VALUE ary[1]; */
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#endif
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/*
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* For declaring bitfields out of non-unsigned int types:
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* struct date {
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* BITFIELD(enum months, month, 4);
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* ...
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* };
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*/
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define BITFIELD(type, name, size) type name : size
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#else
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# define BITFIELD(type, name, size) unsigned int name : size
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#endif
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#endif /* INTERNAL_COMPILERS_H */
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