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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on
* the source.
*/
/**
* @file
*
* @brief Macros to abstract compiler capabilities for the Clang toolchain
*
* @internal
* This file should never be included directly; instead, one should
* include toolchain.h which will pull in the file appropriate to
* the detected toolchain.
*/
#if defined(__clang__)
#define SCP_FORMAT_STRING
#define SCP_FORMAT_STRING_ARGS(x,y) __attribute__((format(printf, x, y)))
#define __UNUSED __attribute__((__unused__))
#define __ALIGNED(x) __attribute__((__aligned__(x)))
#ifdef NO_RESTRICT_USE
# define RESTRICT
#else
# define RESTRICT restrict
#endif
#define ASSUME(x)
#if defined(NDEBUG)
# define Assertion(expr, msg, ...) do { (void)sizeof(expr); } while (false)
#else
/*
* NOTE: Assertion() can only use its proper functionality in compilers
* that support variadic macros.
*/
# define Assertion(expr, msg, ...) \
do { \
if (!(expr)) { \
os::dialogs::AssertMessage(#expr, __FILE__, __LINE__, msg, ##__VA_ARGS__); \
} \
} while (false)
#endif
/* C++11 Standard Detection */
#if !defined(HAVE_CXX11)
/*
* Clang does not seem to have a feature check for 'is_trivial'.
* Assume it will be covered by one of the following checks ...
* http://clang.llvm.org/docs/LanguageExtensions.html#feature_check
*/
# if __has_feature(cxx_static_assert) && __has_feature(cxx_auto_type)
# define HAVE_CXX11
# endif
#endif
#define SIZE_T_ARG "%zu"
#define PTRDIFF_T_ARG "%zd"
#define likely(x) __builtin_expect((long) !!(x), 1L)
#define unlikely(x) __builtin_expect((long) !!(x), 0L)
#define USED_VARIABLE __attribute__((used))
#if __has_cpp_attribute(fallthough)
#define FALLTHROUGH [[fallthrough]]
#elif __has_cpp_attribute(clang::fallthough)
#define FALLTHROUGH [[clang::fallthrough]]
#else
#define FALLTHROUGH
#endif
#ifndef CLANG_ANALYZER_NORETURN
#if __has_feature(attribute_analyzer_noreturn)
#define CLANG_ANALYZER_NORETURN __attribute__((analyzer_noreturn))
#else
#define CLANG_ANALYZER_NORETURN
#endif
#endif
#ifndef NDEBUG
#define UNREACHABLE(msg, ...) \
do { \
os::dialogs::Error(__FILE__, __LINE__, msg, ##__VA_ARGS__); \
} while (false)
#else
#define UNREACHABLE(msg, ...) __builtin_unreachable()
#endif
/**
* @brief Suppresses all warnings and allows to pop back to normal afterwards
*/
#define PUSH_SUPPRESS_WARNINGS \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wattributes\"") \
/**
* @brief Restored previous warning settings
*/
#define POP_SUPPRESS_WARNINGS \
_Pragma("clang diagnostic pop")
#endif
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