mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
48 lines
1.9 KiB
C
48 lines
1.9 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 C99 shim for <stdbool.h>
|
||
|
|
*/
|
||
|
|
#include "ruby/3/config.h"
|
||
|
|
|
||
|
|
#if defined(__bool_true_false_are_defined)
|
||
|
|
# /* Take that. */
|
||
|
|
|
||
|
|
#elif defined(__cplusplus)
|
||
|
|
# /* bool is a keyword in C++. */
|
||
|
|
# if defined(HAVE_STDBOOL_H) && (__cplusplus >= 201103L)
|
||
|
|
# include <cstdbool>
|
||
|
|
# endif
|
||
|
|
#
|
||
|
|
# ifndef __bool_true_false_are_defined
|
||
|
|
# define __bool_true_false_are_defined
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#elif defined(HAVE_STDBOOL_H)
|
||
|
|
# /* Take stdbool.h definition. */
|
||
|
|
# include <stdbool.h>
|
||
|
|
|
||
|
|
#else
|
||
|
|
typedef unsigned char _Bool;
|
||
|
|
# /* See also http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2229.htm */
|
||
|
|
# define bool _Bool
|
||
|
|
# define true ((_Bool)+1)
|
||
|
|
# define false ((_Bool)+0)
|
||
|
|
# define __bool_true_false_are_defined
|
||
|
|
#endif
|