Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/target_generator.cc

Index: trunk/src/tools/gn/target_generator.cc
===================================================================
--- trunk/src/tools/gn/target_generator.cc	(revision 214322)
+++ trunk/src/tools/gn/target_generator.cc	(working copy)
@@ -1,334 +0,0 @@
-// 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/target_generator.h"
-
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "tools/gn/build_settings.h"
-#include "tools/gn/config.h"
-#include "tools/gn/config_values_generator.h"
-#include "tools/gn/err.h"
-#include "tools/gn/filesystem_utils.h"
-#include "tools/gn/functions.h"
-#include "tools/gn/input_file.h"
-#include "tools/gn/item_node.h"
-#include "tools/gn/ninja_target_writer.h"
-#include "tools/gn/parse_tree.h"
-#include "tools/gn/scheduler.h"
-#include "tools/gn/scope.h"
-#include "tools/gn/target_manager.h"
-#include "tools/gn/token.h"
-#include "tools/gn/value.h"
-#include "tools/gn/value_extractors.h"
-
-namespace {
-
-bool TypeHasConfigs(Target::OutputType type) {
-  return type == Target::EXECUTABLE ||
-         type == Target::SHARED_LIBRARY ||
-         type == Target::STATIC_LIBRARY ||
-         type == Target::LOADABLE_MODULE;
-}
-
-bool TypeHasConfigValues(Target::OutputType type) {
-  return type == Target::EXECUTABLE ||
-         type == Target::SHARED_LIBRARY ||
-         type == Target::STATIC_LIBRARY ||
-         type == Target::LOADABLE_MODULE;
-}
-
-bool TypeHasSources(Target::OutputType type) {
-  return type != Target::NONE;
-}
-
-bool TypeHasData(Target::OutputType type) {
-  return type != Target::NONE;
-}
-
-bool TypeHasDestDir(Target::OutputType type) {
-  return type == Target::COPY_FILES;
-}
-
-bool TypeHasOutputs(Target::OutputType type) {
-  return type == Target::CUSTOM;
-}
-
-}  // namespace
-
-TargetGenerator::TargetGenerator(Target* target,
-                                 Scope* scope,
-                                 const Token& function_token,
-                                 const std::vector<Value>& args,
-                                 const std::string& output_type,
-                                 Err* err)
-    : target_(target),
-      scope_(scope),
-      function_token_(function_token),
-      args_(args),
-      output_type_(output_type),
-      err_(err),
-      input_directory_(function_token.location().file()->dir()) {
-}
-
-TargetGenerator::~TargetGenerator() {
-}
-
-void TargetGenerator::Run() {
-  // Output type.
-  Target::OutputType output_type = GetOutputType();
-  target_->set_output_type(output_type);
-  if (err_->has_error())
-    return;
-
-  if (TypeHasConfigs(output_type)) {
-    FillConfigs();
-    FillAllDependentConfigs();
-    FillDirectDependentConfigs();
-  }
-  if (TypeHasSources(output_type))
-    FillSources();
-  if (TypeHasData(output_type))
-    FillData();
-  if (output_type == Target::CUSTOM) {
-    FillScript();
-    FillScriptArgs();
-  }
-  if (TypeHasOutputs(output_type))
-    FillOutputs();
-  FillDependencies();  // All types have dependencies.
-
-  if (TypeHasConfigValues(output_type)) {
-    ConfigValuesGenerator gen(&target_->config_values(), scope_,
-                              function_token_, input_directory_, err_);
-    gen.Run();
-    if (err_->has_error())
-      return;
-  }
-
-  if (TypeHasDestDir(output_type))
-    FillDestDir();
-
-  // Set the toolchain as a dependency of the target.
-  // TODO(brettw) currently we lock separately for each config, dep, and
-  // toolchain we add which is bad! Do this in one lock.
-  {
-    ItemTree* tree = &GetBuildSettings()->item_tree();
-    base::AutoLock lock(tree->lock());
-    ItemNode* tc_node =
-        tree->GetExistingNodeLocked(ToolchainLabelForScope(scope_));
-    tree->GetExistingNodeLocked(target_->label())->AddDependency(tc_node);
-  }
-
-  target_->SetGenerated(&function_token_);
-  GetBuildSettings()->target_manager().TargetGenerationComplete(
-      target_->label());
-}
-
-// static
-void TargetGenerator::GenerateTarget(Scope* scope,
-                                     const Token& function_token,
-                                     const std::vector<Value>& args,
-                                     const std::string& output_type,
-                                     Err* err) {
-  // Name is the argument to the function.
-  if (args.size() != 1u || args[0].type() != Value::STRING) {
-    *err = Err(function_token,
-        "Target generator requires one string argument.",
-        "Otherwise I'm not sure what to call this target.");
-    return;
-  }
-
-  // The location of the target is the directory name with no slash at the end.
-  // FIXME(brettw) validate name.
-  const Label& toolchain_label = ToolchainLabelForScope(scope);
-  Label label(function_token.location().file()->dir(),
-              args[0].string_value(),
-              toolchain_label.dir(), toolchain_label.name());
-
-  if (g_scheduler->verbose_logging())
-    g_scheduler->Log("Generating target", label.GetUserVisibleName(true));
-
-  Target* t = scope->settings()->build_settings()->target_manager().GetTarget(
-      label, function_token.range(), NULL, err);
-  if (err->has_error())
-    return;
-
-  TargetGenerator gen(t, scope, function_token, args, output_type, err);
-  gen.Run();
-}
-
-Target::OutputType TargetGenerator::GetOutputType() const {
-  if (output_type_ == functions::kGroup)
-    return Target::NONE;
-  if (output_type_ == functions::kExecutable)
-    return Target::EXECUTABLE;
-  if (output_type_ == functions::kSharedLibrary)
-    return Target::SHARED_LIBRARY;
-  if (output_type_ == functions::kStaticLibrary)
-    return Target::STATIC_LIBRARY;
-  // TODO(brettw) what does loadable module mean?
-  //if (output_type_ == ???)
-  //  return Target::LOADABLE_MODULE;
-  if (output_type_ == functions::kCopy)
-    return Target::COPY_FILES;
-  if (output_type_ == functions::kCustom)
-    return Target::CUSTOM;
-
-  *err_ = Err(function_token_, "Not a known output type",
-              "I am very confused.");
-  return Target::NONE;
-}
-
-void TargetGenerator::FillGenericConfigs(
-    const char* var_name,
-    void (Target::*setter)(std::vector<const Config*>*)) {
-  const Value* value = scope_->GetValue(var_name, true);
-  if (!value)
-    return;
-
-  std::vector<Label> labels;
-  if (!ExtractListOfLabels(*value, input_directory_,
-                           ToolchainLabelForScope(scope_), &labels, err_))
-    return;
-
-  std::vector<const Config*> dest_configs;
-  dest_configs.resize(labels.size());
-  for (size_t i = 0; i < labels.size(); i++) {
-    dest_configs[i] = Config::GetConfig(
-        scope_->settings(),
-        value->list_value()[i].origin()->GetRange(),
-        labels[i], target_, err_);
-    if (err_->has_error())
-      return;
-  }
-  (target_->*setter)(&dest_configs);
-}
-
-void TargetGenerator::FillConfigs() {
-  FillGenericConfigs("configs", &Target::swap_in_configs);
-}
-
-void TargetGenerator::FillAllDependentConfigs() {
-  FillGenericConfigs("all_dependent_configs",
-                     &Target::swap_in_all_dependent_configs);
-}
-
-void TargetGenerator::FillDirectDependentConfigs() {
-  FillGenericConfigs("direct_dependent_configs",
-                     &Target::swap_in_direct_dependent_configs);
-}
-
-void TargetGenerator::FillSources() {
-  const Value* value = scope_->GetValue("sources", true);
-  if (!value)
-    return;
-
-  Target::FileList dest_sources;
-  if (!ExtractListOfRelativeFiles(*value, input_directory_, &dest_sources,
-                                  err_))
-    return;
-  target_->swap_in_sources(&dest_sources);
-}
-
-void TargetGenerator::FillData() {
-  const Value* value = scope_->GetValue("data", true);
-  if (!value)
-    return;
-
-  Target::FileList dest_data;
-  if (!ExtractListOfRelativeFiles(*value, input_directory_, &dest_data,
-                                  err_))
-    return;
-  target_->swap_in_data(&dest_data);
-}
-
-void TargetGenerator::FillDependencies() {
-  const Value* value = scope_->GetValue("deps", true);
-  if (!value)
-    return;
-
-  std::vector<Label> labels;
-  if (!ExtractListOfLabels(*value, input_directory_,
-                           ToolchainLabelForScope(scope_), &labels, err_))
-    return;
-
-  std::vector<const Target*> dest_deps;
-  dest_deps.resize(labels.size());
-  for (size_t i = 0; i < labels.size(); i++) {
-    dest_deps[i] = GetBuildSettings()->target_manager().GetTarget(
-        labels[i], value->list_value()[i].origin()->GetRange(), target_, err_);
-    if (err_->has_error())
-      return;
-  }
-
-  target_->swap_in_deps(&dest_deps);
-}
-
-void TargetGenerator::FillDestDir() {
-  // Destdir is required for all targets that use it.
-  const Value* value = scope_->GetValue("destdir", true);
-  if (!value) {
-    *err_ = Err(function_token_, "This target type requires a \"destdir\".");
-    return;
-  }
-  if (!value->VerifyTypeIs(Value::STRING, err_))
-    return;
-
-  if (!EnsureStringIsInOutputDir(
-          GetBuildSettings()->build_dir(),
-          value->string_value(), *value, err_))
-    return;
-  target_->set_destdir(SourceDir(value->string_value()));
-}
-
-void TargetGenerator::FillScript() {
-  // If this gets called, the target type requires a script, so error out
-  // if it doesn't have one.
-  const Value* value = scope_->GetValue("script", true);
-  if (!value) {
-    *err_ = Err(function_token_, "This target type requires a \"script\".");
-    return;
-  }
-  if (!value->VerifyTypeIs(Value::STRING, err_))
-    return;
-
-  target_->set_script(
-      input_directory_.ResolveRelativeFile(value->string_value()));
-}
-
-void TargetGenerator::FillScriptArgs() {
-  const Value* value = scope_->GetValue("args", true);
-  if (!value)
-    return;
-
-  std::vector<std::string> args;
-  if (!ExtractListOfStringValues(*value, &args, err_))
-    return;
-  target_->swap_in_script_args(&args);
-}
-
-void TargetGenerator::FillOutputs() {
-  const Value* value = scope_->GetValue("outputs", true);
-  if (!value)
-    return;
-
-  Target::FileList outputs;
-  if (!ExtractListOfRelativeFiles(*value, input_directory_, &outputs, err_))
-    return;
-
-  // Validate that outputs are in the output dir.
-  CHECK(outputs.size() == value->list_value().size());
-  for (size_t i = 0; i < outputs.size(); i++) {
-    if (!EnsureStringIsInOutputDir(
-            GetBuildSettings()->build_dir(),
-            outputs[i].value(), value->list_value()[i], err_))
-      return;
-  }
-  target_->swap_in_outputs(&outputs);
-}
-
-const BuildSettings* TargetGenerator::GetBuildSettings() const {
-  return scope_->settings()->build_settings();
-}