diff options
Diffstat (limited to 'tools/gn/import_manager.h')
-rw-r--r-- | tools/gn/import_manager.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/gn/import_manager.h b/tools/gn/import_manager.h new file mode 100644 index 0000000..725a5b2 --- /dev/null +++ b/tools/gn/import_manager.h @@ -0,0 +1,41 @@ +// Copyright (c) 2013 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_IMPORT_MANAGER_H_ +#define TOOLS_GN_IMPORT_MANAGER_H_ + +#include <map> + +#include "base/synchronization/lock.h" + +class Err; +class ParseNode; +class Scope; +class SourceFile; + +// Provides a cache of the results of importing scopes so the results can +// be re-used rather than running the imported files multiple times. +class ImportManager { + public: + ImportManager(); + ~ImportManager(); + + // Does an import of the given file into the given scope. On error, sets the + // error and returns false. + bool DoImport(const SourceFile& file, + const ParseNode* node_for_err, + Scope* scope, + Err* err); + + private: + base::Lock lock_; + + // Owning pointers to the scopes. + typedef std::map<SourceFile, const Scope*> ImportMap; + ImportMap imports_; + + DISALLOW_COPY_AND_ASSIGN(ImportManager); +}; + +#endif // TOOLS_GN_IMPORT_MANAGER_H_ |