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#ifndef RBIMPL_TOKEN_PASTE_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_TOKEN_PASTE_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 `RBIMPL` or `rbimpl` 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 #RBIMPL_TOKEN_PASTE.
*/
#include "ruby/internal/config.h"
#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/warning.h"
#include "ruby/internal/warning_push.h"
/* :TODO: add your compiler here. There are many compilers that can suppress
* warnings via pragmas, but not all of them accept such things inside of `#if`
* and variants' conditions. And such nitpicking behavours tend not be
* documented. Please improve this file when you are really sure about your
* compiler's behaviour. */
#if RBIMPL_COMPILER_SINCE(GCC, 4, 2, 0)
# /* GCC is one of such compiler who cannot write `_Pragma` inside of a `#if`.
# * Cannot but globally kill everything. This is of course a very bad thing.
# * If you know how to reroute this please tell us. */
# /* https://gcc.godbolt.org/z/K2xr7X */
# define RBIMPL_TOKEN_PASTE(x, y) TOKEN_PASTE(x, y)
# pragma GCC diagnostic ignored "-Wundef"
# /* > warning: "symbol" is not defined, evaluates to 0 [-Wundef] */
#elif RBIMPL_COMPILER_IS(Intel)
# /* Ditto for icc. */
# /* https://gcc.godbolt.org/z/pTwDxE */
# define RBIMPL_TOKEN_PASTE(x, y) TOKEN_PASTE(x, y)
# pragma warning(disable: 193)
# /* > warning #193: zero used for undefined preprocessing identifier */
#elif RBIMPL_COMPILER_BEFORE(MSVC, 19, 14, 26428)
# /* :FIXME: is 19.14 the exact version they supported this? */
# define RBIMPL_TOKEN_PASTE(x, y) TOKEN_PASTE(x, y)
# pragma warning(disable: 4668)
# /* > warning C4668: 'symbol' is not defined as a preprocessor macro */
#elif RBIMPL_COMPILER_IS(MSVC)
# define RBIMPL_TOKEN_PASTE(x, y) \
RBIMPL_WARNING_PUSH() \
RBIMPL_WARNING_IGNORED(4668) \
TOKEN_PASTE(x, y) \
RBIMPL_WARNING_POP()
#elif RBIMPL_HAS_WARNING("-Wundef")
# define RBIMPL_TOKEN_PASTE(x, y) \
RBIMPL_WARNING_PUSH() \
RBIMPL_WARNING_IGNORED(-Wundef) \
TOKEN_PASTE(x, y) \
RBIMPL_WARNING_POP()
#else
# /* No way. */
# define RBIMPL_TOKEN_PASTE(x, y) TOKEN_PASTE(x, y)
#endif
#endif /* RBIMPL_TOKEN_PASTE_H */