From dca234a5dc9d5bb39c906d833c43305ce95508fb Mon Sep 17 00:00:00 2001 From: 卜部昌平 Date: Mon, 4 May 2020 15:26:12 +0900 Subject: mv include/ruby/{3,impl} Devs do not love "3". --- include/ruby/impl/has/feature.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/ruby/impl/has/feature.h (limited to 'include/ruby/impl/has/feature.h') diff --git a/include/ruby/impl/has/feature.h b/include/ruby/impl/has/feature.h new file mode 100644 index 0000000000..f64c756817 --- /dev/null +++ b/include/ruby/impl/has/feature.h @@ -0,0 +1,31 @@ +#ifndef RUBY3_HAS_FEATURE_H /*-*-C++-*-vi:se ft=cpp:*/ +#define RUBY3_HAS_FEATURE_H +/** + * @file + * @author Ruby developers + * @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_FEATURE. + */ + +/** Wraps (or simulates) `__has_feature`. */ +#if defined(__has_feature) +# define RUBY3_HAS_FEATURE(_) __has_feature(_) +#else +# define RUBY3_HAS_FEATURE(_) 0 +#endif + +#endif /* RUBY3_HAS_FEATURE_H */ -- cgit v1.2.3