| // Copyright 2018 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. | 
 |  | 
 | #ifndef TOOLS_GN_METADATAWALK_H_ | 
 | #define TOOLS_GN_METADATAWALK_H_ | 
 |  | 
 | #include "tools/gn/build_settings.h" | 
 | #include "tools/gn/target.h" | 
 | #include "tools/gn/unique_vector.h" | 
 | #include "tools/gn/value.h" | 
 |  | 
 | // Function to collect metadata from resolved targets listed in targets_walked. | 
 | // Intended to be called after all targets are resolved. | 
 | // | 
 | // This populates targets_walked with all targets touched by this walk, and | 
 | // returns the list of metadata values. | 
 | std::vector<Value> WalkMetadata( | 
 |     const UniqueVector<const Target*>& targets_to_walk, | 
 |     const std::vector<std::string>& keys_to_extract, | 
 |     const std::vector<std::string>& keys_to_walk, | 
 |     const SourceDir& rebase_dir, | 
 |     std::set<const Target*>* targets_walked, | 
 |     Err* err); | 
 |  | 
 | #endif  // TOOLS_GN_METADATAWALK_H_ |