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| 1 /* |
| 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 // Modified from the Chromium original: |
| 12 // src/base/strings/stringize_macros.h |
| 13 |
| 14 // This file defines preprocessor macros for stringizing preprocessor |
| 15 // symbols (or their output) and manipulating preprocessor symbols |
| 16 // that define strings. |
| 17 |
| 18 #ifndef WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STRINGIZE_MACROS_H_ |
| 19 #define WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STRINGIZE_MACROS_H_ |
| 20 |
| 21 // This is not very useful as it does not expand defined symbols if |
| 22 // called directly. Use its counterpart without the _NO_EXPANSION |
| 23 // suffix, below. |
| 24 #define STRINGIZE_NO_EXPANSION(x) #x |
| 25 |
| 26 // Use this to quote the provided parameter, first expanding it if it |
| 27 // is a preprocessor symbol. |
| 28 // |
| 29 // For example, if: |
| 30 // #define A FOO |
| 31 // #define B(x) myobj->FunctionCall(x) |
| 32 // |
| 33 // Then: |
| 34 // STRINGIZE(A) produces "FOO" |
| 35 // STRINGIZE(B(y)) produces "myobj->FunctionCall(y)" |
| 36 #define STRINGIZE(x) STRINGIZE_NO_EXPANSION(x) |
| 37 |
| 38 #endif // WEBRTC_SYSTEM_WRAPPERS_INCLUDE_STRINGIZE_MACROS_H_ |
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