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| 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/target_generator.h" | |
| 6 | |
| 7 #include "base/files/file_path.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "tools/gn/build_settings.h" | |
| 10 #include "tools/gn/config.h" | |
| 11 #include "tools/gn/config_values_generator.h" | |
| 12 #include "tools/gn/err.h" | |
| 13 #include "tools/gn/filesystem_utils.h" | |
| 14 #include "tools/gn/functions.h" | |
| 15 #include "tools/gn/input_file.h" | |
| 16 #include "tools/gn/item_node.h" | |
| 17 #include "tools/gn/ninja_target_writer.h" | |
| 18 #include "tools/gn/parse_tree.h" | |
| 19 #include "tools/gn/scheduler.h" | |
| 20 #include "tools/gn/scope.h" | |
| 21 #include "tools/gn/target_manager.h" | |
| 22 #include "tools/gn/token.h" | |
| 23 #include "tools/gn/value.h" | |
| 24 #include "tools/gn/value_extractors.h" | |
| 25 | |
| 26 namespace { | |
| 27 | |
| 28 bool TypeHasConfigs(Target::OutputType type) { | |
| 29 return type == Target::EXECUTABLE || | |
| 30 type == Target::SHARED_LIBRARY || | |
| 31 type == Target::STATIC_LIBRARY || | |
| 32 type == Target::LOADABLE_MODULE; | |
| 33 } | |
| 34 | |
| 35 bool TypeHasConfigValues(Target::OutputType type) { | |
| 36 return type == Target::EXECUTABLE || | |
| 37 type == Target::SHARED_LIBRARY || | |
| 38 type == Target::STATIC_LIBRARY || | |
| 39 type == Target::LOADABLE_MODULE; | |
| 40 } | |
| 41 | |
| 42 bool TypeHasSources(Target::OutputType type) { | |
| 43 return type != Target::NONE; | |
| 44 } | |
| 45 | |
| 46 bool TypeHasData(Target::OutputType type) { | |
| 47 return type != Target::NONE; | |
| 48 } | |
| 49 | |
| 50 bool TypeHasDestDir(Target::OutputType type) { | |
| 51 return type == Target::COPY_FILES; | |
| 52 } | |
| 53 | |
| 54 bool TypeHasOutputs(Target::OutputType type) { | |
| 55 return type == Target::CUSTOM; | |
| 56 } | |
| 57 | |
| 58 } // namespace | |
| 59 | |
| 60 TargetGenerator::TargetGenerator(Target* target, | |
| 61 Scope* scope, | |
| 62 const Token& function_token, | |
| 63 const std::vector<Value>& args, | |
| 64 const std::string& output_type, | |
| 65 Err* err) | |
| 66 : target_(target), | |
| 67 scope_(scope), | |
| 68 function_token_(function_token), | |
| 69 args_(args), | |
| 70 output_type_(output_type), | |
| 71 err_(err), | |
| 72 input_directory_(function_token.location().file()->dir()) { | |
| 73 } | |
| 74 | |
| 75 TargetGenerator::~TargetGenerator() { | |
| 76 } | |
| 77 | |
| 78 void TargetGenerator::Run() { | |
| 79 // Output type. | |
| 80 Target::OutputType output_type = GetOutputType(); | |
| 81 target_->set_output_type(output_type); | |
| 82 if (err_->has_error()) | |
| 83 return; | |
| 84 | |
| 85 if (TypeHasConfigs(output_type)) { | |
| 86 FillConfigs(); | |
| 87 FillAllDependentConfigs(); | |
| 88 FillDirectDependentConfigs(); | |
| 89 } | |
| 90 if (TypeHasSources(output_type)) | |
| 91 FillSources(); | |
| 92 if (TypeHasData(output_type)) | |
| 93 FillData(); | |
| 94 if (output_type == Target::CUSTOM) { | |
| 95 FillScript(); | |
| 96 FillScriptArgs(); | |
| 97 } | |
| 98 if (TypeHasOutputs(output_type)) | |
| 99 FillOutputs(); | |
| 100 FillDependencies(); // All types have dependencies. | |
| 101 | |
| 102 if (TypeHasConfigValues(output_type)) { | |
| 103 ConfigValuesGenerator gen(&target_->config_values(), scope_, | |
| 104 function_token_, input_directory_, err_); | |
| 105 gen.Run(); | |
| 106 if (err_->has_error()) | |
| 107 return; | |
| 108 } | |
| 109 | |
| 110 if (TypeHasDestDir(output_type)) | |
| 111 FillDestDir(); | |
| 112 | |
| 113 // Set the toolchain as a dependency of the target. | |
| 114 // TODO(brettw) currently we lock separately for each config, dep, and | |
| 115 // toolchain we add which is bad! Do this in one lock. | |
| 116 { | |
| 117 ItemTree* tree = &GetBuildSettings()->item_tree(); | |
| 118 base::AutoLock lock(tree->lock()); | |
| 119 ItemNode* tc_node = | |
| 120 tree->GetExistingNodeLocked(ToolchainLabelForScope(scope_)); | |
| 121 tree->GetExistingNodeLocked(target_->label())->AddDependency(tc_node); | |
| 122 } | |
| 123 | |
| 124 target_->SetGenerated(&function_token_); | |
| 125 GetBuildSettings()->target_manager().TargetGenerationComplete( | |
| 126 target_->label()); | |
| 127 } | |
| 128 | |
| 129 // static | |
| 130 void TargetGenerator::GenerateTarget(Scope* scope, | |
| 131 const Token& function_token, | |
| 132 const std::vector<Value>& args, | |
| 133 const std::string& output_type, | |
| 134 Err* err) { | |
| 135 // Name is the argument to the function. | |
| 136 if (args.size() != 1u || args[0].type() != Value::STRING) { | |
| 137 *err = Err(function_token, | |
| 138 "Target generator requires one string argument.", | |
| 139 "Otherwise I'm not sure what to call this target."); | |
| 140 return; | |
| 141 } | |
| 142 | |
| 143 // The location of the target is the directory name with no slash at the end. | |
| 144 // FIXME(brettw) validate name. | |
| 145 const Label& toolchain_label = ToolchainLabelForScope(scope); | |
| 146 Label label(function_token.location().file()->dir(), | |
| 147 args[0].string_value(), | |
| 148 toolchain_label.dir(), toolchain_label.name()); | |
| 149 | |
| 150 if (g_scheduler->verbose_logging()) | |
| 151 g_scheduler->Log("Generating target", label.GetUserVisibleName(true)); | |
| 152 | |
| 153 Target* t = scope->settings()->build_settings()->target_manager().GetTarget( | |
| 154 label, function_token.range(), NULL, err); | |
| 155 if (err->has_error()) | |
| 156 return; | |
| 157 | |
| 158 TargetGenerator gen(t, scope, function_token, args, output_type, err); | |
| 159 gen.Run(); | |
| 160 } | |
| 161 | |
| 162 Target::OutputType TargetGenerator::GetOutputType() const { | |
| 163 if (output_type_ == functions::kGroup) | |
| 164 return Target::NONE; | |
| 165 if (output_type_ == functions::kExecutable) | |
| 166 return Target::EXECUTABLE; | |
| 167 if (output_type_ == functions::kSharedLibrary) | |
| 168 return Target::SHARED_LIBRARY; | |
| 169 if (output_type_ == functions::kStaticLibrary) | |
| 170 return Target::STATIC_LIBRARY; | |
| 171 // TODO(brettw) what does loadable module mean? | |
| 172 //if (output_type_ == ???) | |
| 173 // return Target::LOADABLE_MODULE; | |
| 174 if (output_type_ == functions::kCopy) | |
| 175 return Target::COPY_FILES; | |
| 176 if (output_type_ == functions::kCustom) | |
| 177 return Target::CUSTOM; | |
| 178 | |
| 179 *err_ = Err(function_token_, "Not a known output type", | |
| 180 "I am very confused."); | |
| 181 return Target::NONE; | |
| 182 } | |
| 183 | |
| 184 void TargetGenerator::FillGenericConfigs( | |
| 185 const char* var_name, | |
| 186 void (Target::*setter)(std::vector<const Config*>*)) { | |
| 187 const Value* value = scope_->GetValue(var_name, true); | |
| 188 if (!value) | |
| 189 return; | |
| 190 | |
| 191 std::vector<Label> labels; | |
| 192 if (!ExtractListOfLabels(*value, input_directory_, | |
| 193 ToolchainLabelForScope(scope_), &labels, err_)) | |
| 194 return; | |
| 195 | |
| 196 std::vector<const Config*> dest_configs; | |
| 197 dest_configs.resize(labels.size()); | |
| 198 for (size_t i = 0; i < labels.size(); i++) { | |
| 199 dest_configs[i] = Config::GetConfig( | |
| 200 scope_->settings(), | |
| 201 value->list_value()[i].origin()->GetRange(), | |
| 202 labels[i], target_, err_); | |
| 203 if (err_->has_error()) | |
| 204 return; | |
| 205 } | |
| 206 (target_->*setter)(&dest_configs); | |
| 207 } | |
| 208 | |
| 209 void TargetGenerator::FillConfigs() { | |
| 210 FillGenericConfigs("configs", &Target::swap_in_configs); | |
| 211 } | |
| 212 | |
| 213 void TargetGenerator::FillAllDependentConfigs() { | |
| 214 FillGenericConfigs("all_dependent_configs", | |
| 215 &Target::swap_in_all_dependent_configs); | |
| 216 } | |
| 217 | |
| 218 void TargetGenerator::FillDirectDependentConfigs() { | |
| 219 FillGenericConfigs("direct_dependent_configs", | |
| 220 &Target::swap_in_direct_dependent_configs); | |
| 221 } | |
| 222 | |
| 223 void TargetGenerator::FillSources() { | |
| 224 const Value* value = scope_->GetValue("sources", true); | |
| 225 if (!value) | |
| 226 return; | |
| 227 | |
| 228 Target::FileList dest_sources; | |
| 229 if (!ExtractListOfRelativeFiles(*value, input_directory_, &dest_sources, | |
| 230 err_)) | |
| 231 return; | |
| 232 target_->swap_in_sources(&dest_sources); | |
| 233 } | |
| 234 | |
| 235 void TargetGenerator::FillData() { | |
| 236 const Value* value = scope_->GetValue("data", true); | |
| 237 if (!value) | |
| 238 return; | |
| 239 | |
| 240 Target::FileList dest_data; | |
| 241 if (!ExtractListOfRelativeFiles(*value, input_directory_, &dest_data, | |
| 242 err_)) | |
| 243 return; | |
| 244 target_->swap_in_data(&dest_data); | |
| 245 } | |
| 246 | |
| 247 void TargetGenerator::FillDependencies() { | |
| 248 const Value* value = scope_->GetValue("deps", true); | |
| 249 if (!value) | |
| 250 return; | |
| 251 | |
| 252 std::vector<Label> labels; | |
| 253 if (!ExtractListOfLabels(*value, input_directory_, | |
| 254 ToolchainLabelForScope(scope_), &labels, err_)) | |
| 255 return; | |
| 256 | |
| 257 std::vector<const Target*> dest_deps; | |
| 258 dest_deps.resize(labels.size()); | |
| 259 for (size_t i = 0; i < labels.size(); i++) { | |
| 260 dest_deps[i] = GetBuildSettings()->target_manager().GetTarget( | |
| 261 labels[i], value->list_value()[i].origin()->GetRange(), target_, err_); | |
| 262 if (err_->has_error()) | |
| 263 return; | |
| 264 } | |
| 265 | |
| 266 target_->swap_in_deps(&dest_deps); | |
| 267 } | |
| 268 | |
| 269 void TargetGenerator::FillDestDir() { | |
| 270 // Destdir is required for all targets that use it. | |
| 271 const Value* value = scope_->GetValue("destdir", true); | |
| 272 if (!value) { | |
| 273 *err_ = Err(function_token_, "This target type requires a \"destdir\"."); | |
| 274 return; | |
| 275 } | |
| 276 if (!value->VerifyTypeIs(Value::STRING, err_)) | |
| 277 return; | |
| 278 | |
| 279 if (!EnsureStringIsInOutputDir( | |
| 280 GetBuildSettings()->build_dir(), | |
| 281 value->string_value(), *value, err_)) | |
| 282 return; | |
| 283 target_->set_destdir(SourceDir(value->string_value())); | |
| 284 } | |
| 285 | |
| 286 void TargetGenerator::FillScript() { | |
| 287 // If this gets called, the target type requires a script, so error out | |
| 288 // if it doesn't have one. | |
| 289 const Value* value = scope_->GetValue("script", true); | |
| 290 if (!value) { | |
| 291 *err_ = Err(function_token_, "This target type requires a \"script\"."); | |
| 292 return; | |
| 293 } | |
| 294 if (!value->VerifyTypeIs(Value::STRING, err_)) | |
| 295 return; | |
| 296 | |
| 297 target_->set_script( | |
| 298 input_directory_.ResolveRelativeFile(value->string_value())); | |
| 299 } | |
| 300 | |
| 301 void TargetGenerator::FillScriptArgs() { | |
| 302 const Value* value = scope_->GetValue("args", true); | |
| 303 if (!value) | |
| 304 return; | |
| 305 | |
| 306 std::vector<std::string> args; | |
| 307 if (!ExtractListOfStringValues(*value, &args, err_)) | |
| 308 return; | |
| 309 target_->swap_in_script_args(&args); | |
| 310 } | |
| 311 | |
| 312 void TargetGenerator::FillOutputs() { | |
| 313 const Value* value = scope_->GetValue("outputs", true); | |
| 314 if (!value) | |
| 315 return; | |
| 316 | |
| 317 Target::FileList outputs; | |
| 318 if (!ExtractListOfRelativeFiles(*value, input_directory_, &outputs, err_)) | |
| 319 return; | |
| 320 | |
| 321 // Validate that outputs are in the output dir. | |
| 322 CHECK(outputs.size() == value->list_value().size()); | |
| 323 for (size_t i = 0; i < outputs.size(); i++) { | |
| 324 if (!EnsureStringIsInOutputDir( | |
| 325 GetBuildSettings()->build_dir(), | |
| 326 outputs[i].value(), value->list_value()[i], err_)) | |
| 327 return; | |
| 328 } | |
| 329 target_->swap_in_outputs(&outputs); | |
| 330 } | |
| 331 | |
| 332 const BuildSettings* TargetGenerator::GetBuildSettings() const { | |
| 333 return scope_->settings()->build_settings(); | |
| 334 } | |
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Chromium Code Reviews
Issue 21084010:
Revert 214254 "Add initial prototype for the GN meta-buildsystem." (Closed)
Base URL: svn://svn.chromium.org/chrome/