blob: 917d06810515f836053a43046061da8a75a55e1a [file] [log] [blame]
// 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 "gn/ninja_toolchain_writer.h"
#include <fstream>
#include "base/files/file_util.h"
#include "base/strings/stringize_macros.h"
#include "gn/build_settings.h"
#include "gn/builtin_tool.h"
#include "gn/c_tool.h"
#include "gn/filesystem_utils.h"
#include "gn/general_tool.h"
#include "gn/ninja_utils.h"
#include "gn/pool.h"
#include "gn/settings.h"
#include "gn/substitution_writer.h"
#include "gn/target.h"
#include "gn/toolchain.h"
#include "gn/trace.h"
namespace {
const char kIndent[] = " ";
} // namespace
NinjaToolchainWriter::NinjaToolchainWriter(const Settings* settings,
const Toolchain* toolchain,
std::ostream& out)
: settings_(settings),
toolchain_(toolchain),
out_(out),
path_output_(settings_->build_settings()->build_dir(),
settings_->build_settings()->root_path_utf8(),
ESCAPE_NINJA) {}
NinjaToolchainWriter::~NinjaToolchainWriter() = default;
void NinjaToolchainWriter::Run(
const std::vector<NinjaWriter::TargetRulePair>& rules) {
std::string rule_prefix = GetNinjaRulePrefixForToolchain(settings_);
for (const auto& tool : toolchain_->tools()) {
if (tool.second->name() == GeneralTool::kGeneralToolAction ||
tool.second->AsBuiltin()) {
continue;
}
WriteToolRule(tool.second.get(), rule_prefix);
}
out_ << std::endl;
for (const auto& pair : rules)
out_ << pair.second;
}
// static
bool NinjaToolchainWriter::RunAndWriteFile(
const Settings* settings,
const Toolchain* toolchain,
const std::vector<NinjaWriter::TargetRulePair>& rules) {
base::FilePath ninja_file(settings->build_settings()->GetFullPath(
GetNinjaFileForToolchain(settings)));
ScopedTrace trace(TraceItem::TRACE_FILE_WRITE_NINJA,
FilePathToUTF8(ninja_file));
base::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, toolchain, file);
gen.Run(rules);
return true;
}
void NinjaToolchainWriter::WriteToolRule(Tool* tool,
const std::string& rule_prefix) {
out_ << "rule " << rule_prefix << tool->name() << std::endl;
// Rules explicitly include shell commands, so don't try to escape.
EscapeOptions options;
options.mode = ESCAPE_NINJA_PREFORMATTED_COMMAND;
WriteCommandRulePattern("command", tool->command_launcher(), tool->command(),
options);
WriteRulePattern("description", tool->description(), options);
WriteRulePattern("rspfile", tool->rspfile(), options);
WriteRulePattern("rspfile_content", tool->rspfile_content(), options);
if (CTool* c_tool = tool->AsC()) {
if (c_tool->depsformat() == CTool::DEPS_GCC) {
// GCC-style deps require a depfile.
if (!c_tool->depfile().empty()) {
WriteRulePattern("depfile", tool->depfile(), options);
out_ << kIndent << "deps = gcc" << std::endl;
}
} else if (c_tool->depsformat() == CTool::DEPS_MSVC) {
// MSVC deps don't have a depfile.
out_ << kIndent << "deps = msvc" << std::endl;
}
} else if (!tool->depfile().empty()) {
WriteRulePattern("depfile", tool->depfile(), options);
out_ << kIndent << "deps = gcc" << std::endl;
}
// Use pool is specified.
if (tool->pool().ptr) {
std::string pool_name =
tool->pool().ptr->GetNinjaName(settings_->default_toolchain_label());
out_ << kIndent << "pool = " << pool_name << std::endl;
}
if (tool->restat())
out_ << kIndent << "restat = 1" << std::endl;
}
void NinjaToolchainWriter::WriteRulePattern(const char* name,
const SubstitutionPattern& pattern,
const EscapeOptions& options) {
if (pattern.empty())
return;
out_ << kIndent << name << " = ";
SubstitutionWriter::WriteWithNinjaVariables(pattern, options, out_);
out_ << std::endl;
}
void NinjaToolchainWriter::WriteCommandRulePattern(
const char* name,
const std::string& launcher,
const SubstitutionPattern& command,
const EscapeOptions& options) {
CHECK(!command.empty()) << "Command should not be empty";
out_ << kIndent << name << " = ";
if (!launcher.empty())
out_ << launcher << " ";
SubstitutionWriter::WriteWithNinjaVariables(command, options, out_);
out_ << std::endl;
}