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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef BASE_PORT_H_
#define BASE_PORT_H_
#include <stdarg.h>
#include "build/build_config.h"
#ifdef COMPILER_MSVC
#define GG_LONGLONG(x) x##I64
#define GG_ULONGLONG(x) x##UI64
#else
#define GG_LONGLONG(x) x##LL
#define GG_ULONGLONG(x) x##ULL
#endif
// Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h>
// to get the INTn_C and UINTn_C macros for integer constants. It's difficult
// to guarantee any specific ordering of header includes, so it's difficult to
// guarantee that the INTn_C macros can be defined by including <stdint.h> at
// any specific point. Provide GG_INTn_C macros instead.
#define GG_INT8_C(x) (x)
#define GG_INT16_C(x) (x)
#define GG_INT32_C(x) (x)
#define GG_INT64_C(x) GG_LONGLONG(x)
#define GG_UINT8_C(x) (x ## U)
#define GG_UINT16_C(x) (x ## U)
#define GG_UINT32_C(x) (x ## U)
#define GG_UINT64_C(x) GG_ULONGLONG(x)
namespace base {
// It's possible for functions that use a va_list, such as StringPrintf, to
// invalidate the data in it upon use. The fix is to make a copy of the
// structure before using it and use that copy instead. va_copy is provided
// for this purpose. MSVC does not provide va_copy, so define an
// implementation here. It is not guaranteed that assignment is a copy, so the
// StringUtil.VariableArgsFunc unit test tests this capability.
inline void va_copy(va_list& a, va_list& b) {
#if defined(COMPILER_GCC)
::va_copy(a, b);
#elif defined(COMPILER_MSVC)
a = b;
#endif
}
} // namespace base
#endif // BASE_PORT_H_
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