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      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_SCOPE_PER_FILE_PROVIDER_H_
      6 #define TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "tools/gn/scope.h"
     11 #include "tools/gn/source_file.h"
     12 
     13 // ProgrammaticProvider for a scope to provide it with per-file built-in
     14 // variable support.
     15 class ScopePerFileProvider : public Scope::ProgrammaticProvider {
     16  public:
     17   ScopePerFileProvider(Scope* scope);
     18   virtual ~ScopePerFileProvider();
     19 
     20   // ProgrammaticProvider implementation.
     21   virtual const Value* GetProgrammaticValue(
     22       const base::StringPiece& ident) OVERRIDE;
     23 
     24  private:
     25   const Value* GetCurrentToolchain();
     26   const Value* GetDefaultToolchain();
     27   const Value* GetPythonPath();
     28   const Value* GetRootBuildDir();
     29   const Value* GetRootGenDir();
     30   const Value* GetRootOutDir();
     31   const Value* GetTargetGenDir();
     32   const Value* GetTargetOutDir();
     33 
     34   // All values are lazily created.
     35   scoped_ptr<Value> current_toolchain_;
     36   scoped_ptr<Value> default_toolchain_;
     37   scoped_ptr<Value> python_path_;
     38   scoped_ptr<Value> root_build_dir_;
     39   scoped_ptr<Value> root_gen_dir_;
     40   scoped_ptr<Value> root_out_dir_;
     41   scoped_ptr<Value> target_gen_dir_;
     42   scoped_ptr<Value> target_out_dir_;
     43 
     44   DISALLOW_COPY_AND_ASSIGN(ScopePerFileProvider);
     45 };
     46 
     47 #endif  // TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
     48