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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_HELPER_H_
#define TOOLS_GN_NINJA_HELPER_H_
#include <iosfwd>
#include <string>
#include "tools/gn/filesystem_utils.h"
#include "tools/gn/output_file.h"
#include "tools/gn/target.h"
class BuildSettings;
class SourceDir;
class SourceFile;
class Target;
// NinjaHelper -----------------------------------------------------------------
class NinjaHelper {
public:
NinjaHelper(const BuildSettings* build_settings);
~NinjaHelper();
// Ends in a slash.
std::string GetTopleveOutputDir() const;
// Ends in a slash.
std::string GetTargetOutputDir(const Target* target) const;
// Example: "base/base.ninja". The string version will not be escaped, and
// will always have slashes for path separators.
OutputFile GetNinjaFileForTarget(const Target* target) const;
// Returns the name of the root .ninja file for the given toolchain.
OutputFile GetNinjaFileForToolchain(const Settings* settings) const;
// Given a source file relative to the source root, returns the output
// filename.
OutputFile GetOutputFileForSource(const Target* target,
const SourceFile& source,
SourceFileType type) const;
// Returns the filename produced by the given output.
//
// Some targets make multiple files (like a .dll and an import library). This
// function returns the name of the file other targets should depend on and
// link to (so in this example, the import library).
OutputFile GetTargetOutputFile(const Target* target) const;
// Returns the prefix for rules on the given toolchain. We need this to
// disambiguate a given rule for each toolchain.
std::string GetRulePrefix(const Settings* settings) const;
// Returns the name of the rule name for the given toolchain and file/target
// type. Returns the empty string for source files with no command.
std::string GetRuleForSourceType(const Settings* settings,
SourceFileType type) const;
// Returns the relative directory in either slashes or the system separator
// from the ninja directory (e.g. "out/Debug") to the source root (e.g.
// "../.."). It has no terminating slash.
const std::string& build_to_src_no_last_slash() const {
return build_to_src_no_last_slash_;
}
const std::string& build_to_src_system_no_last_slash() const {
return build_to_src_system_no_last_slash_;
}
private:
const BuildSettings* build_settings_;
std::string build_to_src_no_last_slash_;
std::string build_to_src_system_no_last_slash_;
DISALLOW_COPY_AND_ASSIGN(NinjaHelper);
};
#endif // TOOLS_GN_NINJA_HELPER_H_
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