1 // Copyright (c) 2013 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 #ifndef TOOLS_GN_VALUE_EXTRACTORS_H_ 6 #define TOOLS_GN_VALUE_EXTRACTORS_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "tools/gn/value.h" 12 13 class Err; 14 class Label; 15 class SourceDir; 16 class SourceFile; 17 18 // Sets the error and returns false on failure. 19 template<typename T, class Converter> 20 bool ListValueExtractor(const Value& value, std::vector<T>* dest, 21 Err* err, 22 const Converter& converter) { 23 if (!value.VerifyTypeIs(Value::LIST, err)) 24 return false; 25 const std::vector<Value>& input_list = value.list_value(); 26 dest->resize(input_list.size()); 27 for (size_t i = 0; i < input_list.size(); i++) { 28 if (!converter(input_list[i], &(*dest)[i], err)) 29 return false; 30 } 31 return true; 32 } 33 34 // On failure, returns false and sets the error. 35 bool ExtractListOfStringValues(const Value& value, 36 std::vector<std::string>* dest, 37 Err* err); 38 39 // Looks for a list of source files relative to a given current dir. 40 bool ExtractListOfRelativeFiles(const Value& value, 41 const SourceDir& current_dir, 42 std::vector<SourceFile>* files, 43 Err* err); 44 45 // Looks for a list of source directories relative to a given current dir. 46 bool ExtractListOfRelativeDirs(const Value& value, 47 const SourceDir& current_dir, 48 std::vector<SourceDir>* dest, 49 Err* err); 50 51 bool ExtractListOfLabels(const Value& value, 52 const SourceDir& current_dir, 53 const Label& current_toolchain, 54 std::vector<Label>* dest, 55 Err* err); 56 57 #endif // TOOLS_GN_VALUE_EXTRACTORS_H_ 58
