EVOLUTION-MANAGER

Edit File: port_def.inc

/* * This is where we define macros used across upb. * * All of these macros are undef'd in port_undef.inc to avoid leaking them to * users. * * The correct usage is: * * #include "upb/foobar.h" * #include "upb/baz.h" * * // MUST be last included header. * #include "upb/port_def.inc" * * // Code for this file. * // <...> * * // Can be omitted for .c files, required for .h. * #include "upb/port_undef.inc" * * This file is private and must not be included by users! */ #ifndef UINTPTR_MAX #error must include stdint.h first #endif #if UINTPTR_MAX == 0xffffffff #define UPB_SIZE(size32, size64) size32 #else #define UPB_SIZE(size32, size64) size64 #endif #define UPB_FIELD_AT(msg, fieldtype, offset) \ *(fieldtype*)((const char*)(msg) + offset) #define UPB_READ_ONEOF(msg, fieldtype, offset, case_offset, case_val, default) \ UPB_FIELD_AT(msg, int, case_offset) == case_val \ ? UPB_FIELD_AT(msg, fieldtype, offset) \ : default #define UPB_WRITE_ONEOF(msg, fieldtype, offset, value, case_offset, case_val) \ UPB_FIELD_AT(msg, int, case_offset) = case_val; \ UPB_FIELD_AT(msg, fieldtype, offset) = value; /* UPB_INLINE: inline if possible, emit standalone code if required. */ #ifdef __cplusplus #define UPB_INLINE inline #elif defined (__GNUC__) || defined(__clang__) #define UPB_INLINE static __inline__ #else #define UPB_INLINE static #endif /* Hints to the compiler about likely/unlikely branches. */ #if defined (__GNUC__) || defined(__clang__) #define UPB_LIKELY(x) __builtin_expect((x),1) #define UPB_UNLIKELY(x) __builtin_expect((x),0) #else #define UPB_LIKELY(x) (x) #define UPB_UNLIKELY(x) (x) #endif /* Define UPB_BIG_ENDIAN manually if you're on big endian and your compiler * doesn't provide these preprocessor symbols. */ #if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) #define UPB_BIG_ENDIAN #endif /* Macros for function attributes on compilers that support them. */ #ifdef __GNUC__ #define UPB_FORCEINLINE __inline__ __attribute__((always_inline)) #define UPB_NOINLINE __attribute__((noinline)) #define UPB_NORETURN __attribute__((__noreturn__)) #else /* !defined(__GNUC__) */ #define UPB_FORCEINLINE #define UPB_NOINLINE #define UPB_NORETURN #endif #if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L /* C99/C++11 versions. */ #include <stdio.h> #define _upb_snprintf snprintf #define _upb_vsnprintf vsnprintf #define _upb_va_copy(a, b) va_copy(a, b) #elif defined(_MSC_VER) /* Microsoft C/C++ versions. */ #include <stdarg.h> #include <stdio.h> #if _MSC_VER < 1900 int msvc_snprintf(char* s, size_t n, const char* format, ...); int msvc_vsnprintf(char* s, size_t n, const char* format, va_list arg); #define UPB_MSVC_VSNPRINTF #define _upb_snprintf msvc_snprintf #define _upb_vsnprintf msvc_vsnprintf #else #define _upb_snprintf snprintf #define _upb_vsnprintf vsnprintf #endif #define _upb_va_copy(a, b) va_copy(a, b) #elif defined __GNUC__ /* A few hacky workarounds for functions not in C89. * For internal use only! * TODO(haberman): fix these by including our own implementations, or finding * another workaround. */ #define _upb_snprintf __builtin_snprintf #define _upb_vsnprintf __builtin_vsnprintf #define _upb_va_copy(a, b) __va_copy(a, b) #else #error Need implementations of [v]snprintf and va_copy #endif #ifdef __cplusplus #if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || \ (defined(_MSC_VER) && _MSC_VER >= 1900) /* C++11 is present */ #else #error upb requires C++11 for C++ support #endif #endif #define UPB_MAX(x, y) ((x) > (y) ? (x) : (y)) #define UPB_MIN(x, y) ((x) < (y) ? (x) : (y)) #define UPB_UNUSED(var) (void)var /* UPB_ASSERT(): in release mode, we use the expression without letting it be * evaluated. This prevents "unused variable" warnings. */ #ifdef NDEBUG #define UPB_ASSERT(expr) do {} while (false && (expr)) #else #define UPB_ASSERT(expr) assert(expr) #endif /* UPB_ASSERT_DEBUGVAR(): assert that uses functions or variables that only * exist in debug mode. This turns into regular assert. */ #define UPB_ASSERT_DEBUGVAR(expr) assert(expr) #if defined(__GNUC__) || defined(__clang__) #define UPB_UNREACHABLE() do { assert(0); __builtin_unreachable(); } while(0) #else #define UPB_UNREACHABLE() do { assert(0); } while(0) #endif /* UPB_INFINITY representing floating-point positive infinity. */ #include <math.h> #ifdef INFINITY #define UPB_INFINITY INFINITY #else #define UPB_INFINITY (1.0 / 0.0) #endif