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internal/warnings.h rework

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Not a big rewrite.  Just to make those macros readable.
This commit is contained in:
卜部昌平 2019-12-02 17:02:24 +09:00
parent 64ec438b5b
commit 6581db2187
Notes: git 2019-12-26 20:46:06 +09:00 
Merged: https://github.com/ruby/ruby/pull/2711
1 changed files with 29 additions and 30 deletions
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59
internal/warnings.h
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@ -9,42 +9,41 @@
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
*/
#include "internal/compilers.h" /* for MSC_VERSION_SINCE */
#if defined(_MSC_VER)
#if MSC_VERSION_SINCE(1200)
# /* Not sure exactly when but it seems VC++ 6.0 is a version with it.*/
# define COMPILER_WARNING_PUSH __pragma(warning(push))
# define COMPILER_WARNING_POP __pragma(warning(pop))
# define COMPILER_WARNING_ERROR(flag) __pragma(warning(error: flag)))
# define COMPILER_WARNING_IGNORED(flag) __pragma(warning(suppress: flag)))
# define COMPILER_WARNING_ERROR(flag) __pragma(warning(error: flag))
# define COMPILER_WARNING_IGNORED(flag) __pragma(warning(disable: flag))
#elif defined(__clang__) /* clang 2.6 already had this feature */
# define COMPILER_WARNING_PUSH _Pragma("clang diagnostic push")
# define COMPILER_WARNING_POP _Pragma("clang diagnostic pop")
# define COMPILER_WARNING_SPECIFIER(kind, msg) \
clang diagnostic kind # msg
# define COMPILER_WARNING_ERROR(flag) \
COMPILER_WARNING_PRAGMA(COMPILER_WARNING_SPECIFIER(error, flag))
# define COMPILER_WARNING_IGNORED(flag) \
COMPILER_WARNING_PRAGMA(COMPILER_WARNING_SPECIFIER(ignored, flag))
#elif defined(__clang__)
# /* Not sure exactly when but it seems LLVM 2.6.0 is a version with it. */
# define COMPILER_WARNING_PRAGMA0(x) _Pragma(# x)
# define COMPILER_WARNING_PRAGMA1(x) COMPILER_WARNING_PRAGMA0(clang diagnostic x)
# define COMPILER_WARNING_PRAGMA2(x, y) COMPILER_WARNING_PRAGMA1(x # y)
# define COMPILER_WARNING_PUSH COMPILER_WARNING_PRAGMA1(push)
# define COMPILER_WARNING_POP COMPILER_WARNING_PRAGMA1(pop)
# define COMPILER_WARNING_ERROR(flag) COMPILER_WARNING_PRAGMA2(error, flag)
# define COMPILER_WARNING_IGNORED(flag) COMPILER_WARNING_PRAGMA2(ignored, flag)
#elif GCC_VERSION_SINCE(4, 6, 0)
/* https://gcc.gnu.org/onlinedocs/gcc-4.6.4/gcc/Diagnostic-Pragmas.html */
# define COMPILER_WARNING_PUSH _Pragma("GCC diagnostic push")
# define COMPILER_WARNING_POP _Pragma("GCC diagnostic pop")
# define COMPILER_WARNING_SPECIFIER(kind, msg) \
GCC diagnostic kind # msg
# define COMPILER_WARNING_ERROR(flag) \
COMPILER_WARNING_PRAGMA(COMPILER_WARNING_SPECIFIER(error, flag))
# define COMPILER_WARNING_IGNORED(flag) \
COMPILER_WARNING_PRAGMA(COMPILER_WARNING_SPECIFIER(ignored, flag))
# /* https://gcc.gnu.org/onlinedocs/gcc-4.6.0/gcc/Diagnostic-Pragmas.html */
# define COMPILER_WARNING_PRAGMA0(x) _Pragma(# x)
# define COMPILER_WARNING_PRAGMA1(x) COMPILER_WARNING_PRAGMA0(GCC diagnostic x)
# define COMPILER_WARNING_PRAGMA2(x, y) COMPILER_WARNING_PRAGMA1(x # y)
# define COMPILER_WARNING_PUSH COMPILER_WARNING_PRAGMA1(push)
# define COMPILER_WARNING_POP COMPILER_WARNING_PRAGMA1(pop)
# define COMPILER_WARNING_ERROR(flag) COMPILER_WARNING_PRAGMA2(error, flag)
# define COMPILER_WARNING_IGNORED(flag) COMPILER_WARNING_PRAGMA2(ignored, flag)
#else /* other compilers to follow? */
# define COMPILER_WARNING_PUSH /* nop */
# define COMPILER_WARNING_POP /* nop */
# define COMPILER_WARNING_ERROR(flag) /* nop */
# define COMPILER_WARNING_IGNORED(flag) /* nop */
#endif
#define COMPILER_WARNING_PRAGMA(str) COMPILER_WARNING_PRAGMA_(str)
#define COMPILER_WARNING_PRAGMA_(str) _Pragma(#str)
#else
# /* :FIXME: improve here, for instace icc seems to have something? */
# define COMPILER_WARNING_PUSH /* void */
# define COMPILER_WARNING_POP /* void */
# define COMPILER_WARNING_ERROR(flag) /* void */
# define COMPILER_WARNING_IGNORED(flag) /* void */
#endif /* _MSC_VER */
#endif /* INTERNAL_WARNINGS_H */