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warning_push.h
#ifndef RBIMPL_WARNING_PUSH_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_WARNING_PUSH_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_WARNING_PUSH. * * ### Q&A ### * * Q: Why all the macros defined in this file are function-like macros? * * A: Sigh. This is because of Doxygen. Its `SKIP_FUNCTION_MACROS = YES` * configuration setting requests us that if we want it to ignore these * macros, then we have to do two things: (1) let them be defined as * function-like macros, and (2) place them separately in their own line, * like below: * * ```CXX * // NG -- foo's type considered something like `unsigned int`. * RBIMPL_WARNING_PUSH * int foo(void); * RBIMPL_WARNING_POP * * // OK -- the macros are ignored by Doxygen. * RBIMPL_WARNING_PUSH() * int foo(void); * RBIMPL_WARNING_POP() * ``` */ #include "ruby/internal/compiler_is.h" #include "ruby/internal/compiler_since.h" #if defined(__DOXYGEN__) /** * @private * * Pushes compiler warning state. */ #define RBIMPL_WARNING_PUSH() __pragma(warning(push)) /** * @private * * Pops compiler warning state. */ #define RBIMPL_WARNING_POP() __pragma(warning(pop)) /** * @private * * Turns a warning into a fatal error. * * @param flag A flag that represents the kind of warnings. */ #define RBIMPL_WARNING_ERROR(flag) __pragma(warning(error: flag)) /** * @private * * Suppresses a warning. * * @param flag A flag that represents the kind of warnings. */ #define RBIMPL_WARNING_IGNORED(flag) __pragma(warning(disable: flag)) #elif RBIMPL_COMPILER_SINCE(MSVC, 12, 0, 0) # /* Not sure exactly when but it seems VC++ 6.0 is a version with it.*/ # define RBIMPL_WARNING_PUSH() __pragma(warning(push)) # define RBIMPL_WARNING_POP() __pragma(warning(pop)) # define RBIMPL_WARNING_ERROR(flag) __pragma(warning(error: flag)) # define RBIMPL_WARNING_IGNORED(flag) __pragma(warning(disable: flag)) #elif RBIMPL_COMPILER_SINCE(Intel, 13, 0, 0) # define RBIMPL_WARNING_PUSH() __pragma(warning(push)) # define RBIMPL_WARNING_POP() __pragma(warning(pop)) # define RBIMPL_WARNING_ERROR(flag) __pragma(warning(error: flag)) # define RBIMPL_WARNING_IGNORED(flag) __pragma(warning(disable: flag)) #elif RBIMPL_COMPILER_IS(Clang) || RBIMPL_COMPILER_IS(Apple) # /* Not sure exactly when but it seems LLVM 2.6.0 is a version with it. */ # define RBIMPL_WARNING_PRAGMA0(x) _Pragma(# x) # define RBIMPL_WARNING_PRAGMA1(x) RBIMPL_WARNING_PRAGMA0(clang diagnostic x) # define RBIMPL_WARNING_PRAGMA2(x, y) RBIMPL_WARNING_PRAGMA1(x # y) # define RBIMPL_WARNING_PUSH() RBIMPL_WARNING_PRAGMA1(push) # define RBIMPL_WARNING_POP() RBIMPL_WARNING_PRAGMA1(pop) # define RBIMPL_WARNING_ERROR(flag) RBIMPL_WARNING_PRAGMA2(error, flag) # define RBIMPL_WARNING_IGNORED(flag) RBIMPL_WARNING_PRAGMA2(ignored, flag) #elif RBIMPL_COMPILER_SINCE(GCC, 4, 6, 0) # /* https://gcc.gnu.org/onlinedocs/gcc-4.6.0/gcc/Diagnostic-Pragmas.html */ # define RBIMPL_WARNING_PRAGMA0(x) _Pragma(# x) # define RBIMPL_WARNING_PRAGMA1(x) RBIMPL_WARNING_PRAGMA0(GCC diagnostic x) # define RBIMPL_WARNING_PRAGMA2(x, y) RBIMPL_WARNING_PRAGMA1(x # y) # define RBIMPL_WARNING_PUSH() RBIMPL_WARNING_PRAGMA1(push) # define RBIMPL_WARNING_POP() RBIMPL_WARNING_PRAGMA1(pop) # define RBIMPL_WARNING_ERROR(flag) RBIMPL_WARNING_PRAGMA2(error, flag) # define RBIMPL_WARNING_IGNORED(flag) RBIMPL_WARNING_PRAGMA2(ignored, flag) #else # /* :FIXME: improve here */ # define RBIMPL_WARNING_PUSH() /* void */ # define RBIMPL_WARNING_POP() /* void */ # define RBIMPL_WARNING_ERROR(flag) /* void */ # define RBIMPL_WARNING_IGNORED(flag) /* void */ #endif /* _MSC_VER */ /** @endcond */ #endif /* RBIMPL_WARNING_PUSH_H */
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