1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "tools/gn/ninja_toolchain_writer.h"
6
7 #include <fstream>
8
9 #include "base/file_util.h"
10 #include "base/strings/stringize_macros.h"
11 #include "tools/gn/build_settings.h"
12 #include "tools/gn/settings.h"
13 #include "tools/gn/target.h"
14 #include "tools/gn/toolchain.h"
15 #include "tools/gn/trace.h"
16
NinjaToolchainWriter(const Settings * settings,const Toolchain * toolchain,const std::vector<const Target * > & targets,std::ostream & out)17 NinjaToolchainWriter::NinjaToolchainWriter(
18 const Settings* settings,
19 const Toolchain* toolchain,
20 const std::vector<const Target*>& targets,
21 std::ostream& out)
22 : settings_(settings),
23 toolchain_(toolchain),
24 targets_(targets),
25 out_(out),
26 path_output_(settings_->build_settings()->build_dir(),
27 ESCAPE_NINJA, true),
28 helper_(settings->build_settings()) {
29 }
30
~NinjaToolchainWriter()31 NinjaToolchainWriter::~NinjaToolchainWriter() {
32 }
33
Run()34 void NinjaToolchainWriter::Run() {
35 WriteRules();
36 WriteSubninjas();
37 }
38
39 // static
RunAndWriteFile(const Settings * settings,const Toolchain * toolchain,const std::vector<const Target * > & targets)40 bool NinjaToolchainWriter::RunAndWriteFile(
41 const Settings* settings,
42 const Toolchain* toolchain,
43 const std::vector<const Target*>& targets) {
44 NinjaHelper helper(settings->build_settings());
45 base::FilePath ninja_file(settings->build_settings()->GetFullPath(
46 helper.GetNinjaFileForToolchain(settings).GetSourceFile(
47 settings->build_settings())));
48 ScopedTrace trace(TraceItem::TRACE_FILE_WRITE, FilePathToUTF8(ninja_file));
49
50 base::CreateDirectory(ninja_file.DirName());
51
52 std::ofstream file;
53 file.open(FilePathToUTF8(ninja_file).c_str(),
54 std::ios_base::out | std::ios_base::binary);
55 if (file.fail())
56 return false;
57
58 NinjaToolchainWriter gen(settings, toolchain, targets, file);
59 gen.Run();
60 return true;
61 }
62
WriteRules()63 void NinjaToolchainWriter::WriteRules() {
64 std::string indent(" ");
65
66 NinjaHelper helper(settings_->build_settings());
67 std::string rule_prefix = helper.GetRulePrefix(settings_);
68
69 for (int i = Toolchain::TYPE_NONE + 1; i < Toolchain::TYPE_NUMTYPES; i++) {
70 Toolchain::ToolType tool_type = static_cast<Toolchain::ToolType>(i);
71 const Toolchain::Tool& tool = toolchain_->GetTool(tool_type);
72 if (tool.command.empty())
73 continue;
74
75 out_ << "rule " << rule_prefix << Toolchain::ToolTypeToName(tool_type)
76 << std::endl;
77
78 #define WRITE_ARG(name) \
79 if (!tool.name.empty()) \
80 out_ << indent << " " STRINGIZE(name) " = " << tool.name << std::endl;
81 WRITE_ARG(command);
82 WRITE_ARG(depfile);
83 WRITE_ARG(deps);
84 WRITE_ARG(description);
85 WRITE_ARG(pool);
86 WRITE_ARG(restat);
87 WRITE_ARG(rspfile);
88 WRITE_ARG(rspfile_content);
89 #undef WRITE_ARG
90 }
91 out_ << std::endl;
92 }
93
WriteSubninjas()94 void NinjaToolchainWriter::WriteSubninjas() {
95 // Write subninja commands for each generated target.
96 for (size_t i = 0; i < targets_.size(); i++) {
97 OutputFile ninja_file = helper_.GetNinjaFileForTarget(targets_[i]);
98 out_ << "subninja ";
99 path_output_.WriteFile(out_, ninja_file);
100 out_ << std::endl;
101 }
102 out_ << std::endl;
103 }
104