| // 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; |
| } |