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Diffstat (limited to 'third_party/base/macros.h')
| -rw-r--r-- | third_party/base/macros.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/third_party/base/macros.h b/third_party/base/macros.h new file mode 100644 index 0000000000..05c3132e46 --- /dev/null +++ b/third_party/base/macros.h @@ -0,0 +1,31 @@ +// 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 PDFIUM_THIRD_PARTY_BASE_MACROS_H_ +#define PDFIUM_THIRD_PARTY_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 // PDFIUM_THIRD_PARTY_BASE_MACROS_H_ |