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// 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_SCOPE_PER_FILE_PROVIDER_H_
#define TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "tools/gn/scope.h"
#include "tools/gn/source_file.h"
// ProgrammaticProvider for a scope to provide it with per-file built-in
// variable support.
class ScopePerFileProvider : public Scope::ProgrammaticProvider {
public:
// allow_target_vars allows the target-related variables to get resolved.
// When allow_target_vars is unset, the target-related values will be
// undefined to GN script.
ScopePerFileProvider(Scope* scope, bool allow_target_vars);
virtual ~ScopePerFileProvider();
// ProgrammaticProvider implementation.
virtual const Value* GetProgrammaticValue(
const base::StringPiece& ident) OVERRIDE;
private:
const Value* GetCurrentToolchain();
const Value* GetDefaultToolchain();
const Value* GetPythonPath();
const Value* GetRootBuildDir();
const Value* GetRootGenDir();
const Value* GetRootOutDir();
const Value* GetTargetGenDir();
const Value* GetTargetOutDir();
bool allow_target_vars_;
// All values are lazily created.
scoped_ptr<Value> current_toolchain_;
scoped_ptr<Value> default_toolchain_;
scoped_ptr<Value> python_path_;
scoped_ptr<Value> root_build_dir_;
scoped_ptr<Value> root_gen_dir_;
scoped_ptr<Value> root_out_dir_;
scoped_ptr<Value> target_gen_dir_;
scoped_ptr<Value> target_out_dir_;
DISALLOW_COPY_AND_ASSIGN(ScopePerFileProvider);
};
#endif // TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
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