// Copyright 2014 The Chromium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
// This file contains macros and macro-like constructs (e.g., templates) that | |
// are commonly used throughout Chromium source. (It may also contain things | |
// that are closely related to things that are commonly used that belong in this | |
// file.) | |
#ifndef BASE_MACROS_H_ | |
#define BASE_MACROS_H_ | |
// The COMPILE_ASSERT macro can be used to verify that a compile time | |
// expression is true. For example, you could use it to verify the | |
// size of a static array: | |
// | |
// COMPILE_ASSERT(ARRAYSIZE_UNSAFE(content_type_names) == CONTENT_NUM_TYPES, | |
// content_type_names_incorrect_size); | |
// | |
// or to make sure a struct is smaller than a certain size: | |
// | |
// COMPILE_ASSERT(sizeof(foo) < 128, foo_too_large); | |
// | |
// The second argument to the macro is the name of the variable. If | |
// the expression is false, most compilers will issue a warning/error | |
// containing the name of the variable. | |
#undef COMPILE_ASSERT | |
#define COMPILE_ASSERT(expr, msg) static_assert(expr, #msg) | |
#endif // BASE_MACROS_H_ |