shaka-packager/tools/gn/ninja_script_target_writer.h

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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_SCRIPT_TARGET_WRITER_H_
#define TOOLS_GN_NINJA_SCRIPT_TARGET_WRITER_H_
#include "base/compiler_specific.h"
#include "tools/gn/ninja_target_writer.h"
// Writes a .ninja file for a custom script target type.
class NinjaScriptTargetWriter : public NinjaTargetWriter {
public:
NinjaScriptTargetWriter(const Target* target, std::ostream& out);
virtual ~NinjaScriptTargetWriter();
virtual void Run() OVERRIDE;
private:
bool has_sources() const { return !target_->sources().empty(); }
// Writes the Ninja rule for invoking the script.
//
// Returns the name of the custom rule generated. This will be based on the
// target name, and will include the string "$unique_name" if there are
// multiple inputs.
std::string WriteRuleDefinition(const std::string& script_relative_to_cd);
// Writes the rules for compiling each source, writing all output files
// to the given vector.
//
// common_deps is a precomputed string of all ninja files that are common
// to each build step. This is added to each one.
void WriteSourceRules(const std::string& custom_rule_name,
const std::string& common_deps,
const SourceDir& script_cd,
const std::string& script_cd_to_root,
std::vector<OutputFile>* output_files);
void WriteArg(const std::string& arg);
// Writes the .stamp rule that names this target and collects all invocations
// of the script into one thing that other targets can depend on.
void WriteStamp(const std::vector<OutputFile>& output_files);
DISALLOW_COPY_AND_ASSIGN(NinjaScriptTargetWriter);
};
#endif // TOOLS_GN_NINJA_SCRIPT_TARGET_WRITER_H_