1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 // 5 // This file defines preprocessor macros for stringizing preprocessor 6 // symbols (or their output) and manipulating preprocessor symbols 7 // that define strings. 8 9 #ifndef BASE_STRINGS_STRINGIZE_MACROS_H_ 10 #define BASE_STRINGS_STRINGIZE_MACROS_H_ 11 12 #include "util/build_config.h" 13 14 // This is not very useful as it does not expand defined symbols if 15 // called directly. Use its counterpart without the _NO_EXPANSION 16 // suffix, below. 17 #define STRINGIZE_NO_EXPANSION(x) #x 18 19 // Use this to quote the provided parameter, first expanding it if it 20 // is a preprocessor symbol. 21 // 22 // For example, if: 23 // #define A FOO 24 // #define B(x) myobj->FunctionCall(x) 25 // 26 // Then: 27 // STRINGIZE(A) produces "FOO" 28 // STRINGIZE(B(y)) produces "myobj->FunctionCall(y)" 29 #define STRINGIZE(x) STRINGIZE_NO_EXPANSION(x) 30 31 #endif // BASE_STRINGS_STRINGIZE_MACROS_H_ 32