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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.
#include "tools/gn/ninja_toolchain_writer.h"
#include <fstream>
#include "base/file_util.h"
#include "base/strings/stringize_macros.h"
#include "tools/gn/build_settings.h"
#include "tools/gn/item_node.h"
#include "tools/gn/settings.h"
#include "tools/gn/target.h"
#include "tools/gn/toolchain.h"
#include "tools/gn/toolchain_manager.h"
#include "tools/gn/trace.h"
NinjaToolchainWriter::NinjaToolchainWriter(
const Settings* settings,
const std::vector<const Target*>& targets,
const std::set<std::string>& skip_files,
std::ostream& out)
: settings_(settings),
targets_(targets),
skip_files_(skip_files),
out_(out),
path_output_(settings_->build_settings()->build_dir(),
ESCAPE_NINJA, true),
helper_(settings->build_settings()) {
}
NinjaToolchainWriter::~NinjaToolchainWriter() {
}
void NinjaToolchainWriter::Run() {
WriteRules();
WriteSubninjas();
}
// static
bool NinjaToolchainWriter::RunAndWriteFile(
const Settings* settings,
const std::vector<const Target*>& targets,
const std::set<std::string>& skip_files) {
NinjaHelper helper(settings->build_settings());
base::FilePath ninja_file(settings->build_settings()->GetFullPath(
helper.GetNinjaFileForToolchain(settings).GetSourceFile(
settings->build_settings())));
ScopedTrace trace(TraceItem::TRACE_FILE_WRITE, FilePathToUTF8(ninja_file));
file_util::CreateDirectory(ninja_file.DirName());
std::ofstream file;
file.open(FilePathToUTF8(ninja_file).c_str(),
std::ios_base::out | std::ios_base::binary);
if (file.fail())
return false;
NinjaToolchainWriter gen(settings, targets, skip_files, file);
gen.Run();
return true;
}
void NinjaToolchainWriter::WriteRules() {
const Toolchain* tc = settings_->build_settings()->toolchain_manager()
.GetToolchainDefinitionUnlocked(settings_->toolchain_label());
CHECK(tc);
std::string indent(" ");
NinjaHelper helper(settings_->build_settings());
std::string rule_prefix = helper.GetRulePrefix(settings_);
for (int i = Toolchain::TYPE_NONE + 1; i < Toolchain::TYPE_NUMTYPES; i++) {
Toolchain::ToolType tool_type = static_cast<Toolchain::ToolType>(i);
const Toolchain::Tool& tool = tc->GetTool(tool_type);
if (tool.command.empty())
continue;
out_ << "rule " << rule_prefix << Toolchain::ToolTypeToName(tool_type)
<< std::endl;
#define WRITE_ARG(name) \
if (!tool.name.empty()) \
out_ << indent << " " STRINGIZE(name) " = " << tool.name << std::endl;
WRITE_ARG(command);
WRITE_ARG(depfile);
WRITE_ARG(deps);
WRITE_ARG(description);
WRITE_ARG(pool);
WRITE_ARG(restat);
WRITE_ARG(rspfile);
WRITE_ARG(rspfile_content);
#undef WRITE_ARG
}
out_ << std::endl;
}
void NinjaToolchainWriter::WriteSubninjas() {
// Write subninja commands for each generated target.
for (size_t i = 0; i < targets_.size(); i++) {
if (!targets_[i]->item_node()->should_generate() ||
(targets_[i]->settings()->build_settings()->using_external_generator()
&& targets_[i]->external()))
continue;
OutputFile ninja_file = helper_.GetNinjaFileForTarget(targets_[i]);
if (skip_files_.find(ninja_file.value()) != skip_files_.end())
continue;
out_ << "subninja ";
path_output_.WriteFile(out_, ninja_file);
out_ << std::endl;
}
out_ << std::endl;
}
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