| // Copyright (c) 2010 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 defines preprocessor macros for stringizing preprocessor | |
| // symbols (or their output) and manipulating preprocessor symbols | |
| // that define strings. | |
| #ifndef BASE_STRINGS_STRINGIZE_MACROS_H_ | |
| #define BASE_STRINGS_STRINGIZE_MACROS_H_ | |
| #include "util/build_config.h" | |
| // This is not very useful as it does not expand defined symbols if | |
| // called directly. Use its counterpart without the _NO_EXPANSION | |
| // suffix, below. | |
| #define STRINGIZE_NO_EXPANSION(x) #x | |
| // Use this to quote the provided parameter, first expanding it if it | |
| // is a preprocessor symbol. | |
| // | |
| // For example, if: | |
| // #define A FOO | |
| // #define B(x) myobj->FunctionCall(x) | |
| // | |
| // Then: | |
| // STRINGIZE(A) produces "FOO" | |
| // STRINGIZE(B(y)) produces "myobj->FunctionCall(y)" | |
| #define STRINGIZE(x) STRINGIZE_NO_EXPANSION(x) | |
| #endif // BASE_STRINGS_STRINGIZE_MACROS_H_ |