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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_NINJA_TOOLCHAIN_WRITER_H_
+#define TOOLS_GN_NINJA_TOOLCHAIN_WRITER_H_
+
+#include <iosfwd>
+#include <vector>
+
+#include "tools/gn/ninja_helper.h"
+#include "tools/gn/path_output.h"
+
+class BuildSettings;
+class Settings;
+class Target;
+
+class NinjaToolchainWriter {
+ public:
+ // Takes the settings for the toolchain, as well as the list of all targets
+ // assicoated with the toolchain.
+ static bool RunAndWriteFile(const Settings* settings,
+ const std::vector<const Target*>& targets);
+
+ private:
+ NinjaToolchainWriter(const Settings* settings,
+ const std::vector<const Target*>& targets,
+ std::ostream& out);
+ ~NinjaToolchainWriter();
+
+ void Run();
+
+ void WriteRules();
+ void WriteSubninjas();
+
+ const Settings* settings_;
+ std::vector<const Target*> targets_;
+ std::ostream& out_;
+ PathOutput path_output_;
+
+ NinjaHelper helper_;
+
+ DISALLOW_COPY_AND_ASSIGN(NinjaToolchainWriter);
+};
+
+#endif // TOOLS_GN_NINJA_TOOLCHAIN_WRITER_H_