Move hasRuntimeTypeSupport, hasIsolateSupport, and hasFunctionApplySupport to JavaScriptBackend.

pkg/compiler/lib/src/enqueue.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.enqueue;
 
 import 'dart:collection' show Queue;
 
 import 'cache_strategy.dart';
 import 'common/backend_api.dart' show Backend;
 import 'common/names.dart' show Identifiers;
 import 'common/resolution.dart' show Resolution, ResolutionWorkItem;
 import 'common/tasks.dart' show CompilerTask;
 import 'common/work.dart' show WorkItem;
 import 'common.dart';
 import 'compiler.dart' show Compiler, GlobalDependencyRegistry;
-import 'core_types.dart' show CommonElements;
 import 'options.dart';
 import 'dart_types.dart' show DartType, InterfaceType;
 import 'elements/elements.dart'
     show
         AnalyzableElement,
         AstElement,
         ClassElement,
         ConstructorElement,
         Element,
         Entity,
-        LibraryElement,
-        LocalFunctionElement,
         MemberElement;
 import 'elements/entities.dart';
 import 'native/native.dart' as native;
 import 'types/types.dart' show TypeMaskStrategy;
 import 'universe/world_builder.dart';
 import 'universe/use.dart'
     show DynamicUse, StaticUse, StaticUseKind, TypeUse, TypeUseKind;
 import 'universe/world_impact.dart'
     show ImpactStrategy, ImpactUseCase, WorldImpact, WorldImpactVisitor;
 import 'util/enumset.dart';
@@ skipping 12 matching lines @@
         super(compiler.measurer) {
     _resolution = new ResolutionEnqueuer(
         this,
         compiler.options,
         compiler.resolution,
         compiler.options.analyzeOnly && compiler.options.analyzeMain
             ? const DirectEnqueuerStrategy()
             : const TreeShakingEnqueuerStrategy(),
         compiler.globalDependencies,
         compiler.backend,
-        compiler.coreClasses,
         compiler.cacheStrategy);
     _codegen = compiler.backend.createCodegenEnqueuer(this, compiler);
   }
 
   ResolutionEnqueuer get resolution => _resolution;
   Enqueuer get codegen => _codegen;
 
   void forgetEntity(Entity entity) {
     resolution.forgetEntity(entity, compiler);
     codegen.forgetEntity(entity, compiler);
@@ skipping 56 matching lines @@
 class ResolutionEnqueuer extends EnqueuerImpl {
   static const ImpactUseCase IMPACT_USE =
       const ImpactUseCase('ResolutionEnqueuer');
 
   final CompilerTask task;
   final String name;
   final Resolution _resolution;
   final CompilerOptions _options;
   final Backend backend;
   final GlobalDependencyRegistry _globalDependencies;
-  final CommonElements _commonElements;
   final native.NativeEnqueuer nativeEnqueuer;
 
   final EnqueuerStrategy strategy;
   Set<ClassEntity> _recentClasses = new Setlet<ClassEntity>();
   final ResolutionWorldBuilderImpl _universe;
 
   bool queueIsClosed = false;
 
   WorldImpactVisitor _impactVisitor;
 
   /// All declaration elements that have been processed by the resolver.
-  final Set<AstElement> _processedElements = new Set<AstElement>();
+  final Set<Entity> _processedElements = new Set<Entity>();
 
   final Queue<WorkItem> _queue = new Queue<WorkItem>();
 
   /// Queue of deferred resolution actions to execute when the resolution queue
   /// has been emptied.
   final Queue<_DeferredAction> _deferredQueue = new Queue<_DeferredAction>();
 
   ResolutionEnqueuer(
       this.task,
       this._options,
       Resolution resolution,
       this.strategy,
       this._globalDependencies,
       Backend backend,
-      this._commonElements,
       CacheStrategy cacheStrategy,
       [this.name = 'resolution enqueuer'])
       : this.backend = backend,
         this._resolution = resolution,
         this.nativeEnqueuer = backend.nativeResolutionEnqueuer(),
         _universe = new ResolutionWorldBuilderImpl(
             backend, resolution, cacheStrategy, const TypeMaskStrategy()) {
     _impactVisitor = new EnqueuerImplImpactVisitor(this);
   }
 
@@ skipping 237 matching lines @@
     if (queueIsClosed) {
       throw new SpannableAssertionFailure(
           element, "Resolution work list is closed. Trying to add $element.");
     }
 
     applyImpact(backend.registerUsedElement(element, forResolution: true));
     _openWorld.registerUsedElement(element);
 
     ResolutionWorkItem workItem = _resolution.createWorkItem(element);
     _queue.add(workItem);
-
-    // Enable isolate support if we start using something from the isolate
-    // library, or timers for the async library.  We exclude constant fields,
-    // which are ending here because their initializing expression is compiled.
-    LibraryElement library = element.library;
-    if (!universe.hasIsolateSupport && (!element.isField || !element.isConst)) {
-      String uri = library.canonicalUri.toString();
-      if (uri == 'dart:isolate') {
-        _enableIsolateSupport();
-      } else if (uri == 'dart:async') {
-        if (element.name == '_createTimer' ||
-            element.name == '_createPeriodicTimer') {
-          // The [:Timer:] class uses the event queue of the isolate
-          // library, so we make sure that event queue is generated.
-          _enableIsolateSupport();
-        }
-      }
-    }
-
-    if (element.isGetter && element.name == Identifiers.runtimeType_) {
-      // Enable runtime type support if we discover a getter called runtimeType.
-      // We have to enable runtime type before hitting the codegen, so
-      // that constructors know whether they need to generate code for
-      // runtime type.
-      _universe.hasRuntimeTypeSupport = true;
-      // TODO(ahe): Record precise dependency here.
-      applyImpact(backend.registerRuntimeType());
-    } else if (_commonElements.isFunctionApplyMethod(element)) {
-      _universe.hasFunctionApplySupport = true;
-    }
   }
 
   void _registerNoSuchMethod(Element element) {
     backend.registerNoSuchMethod(element);
   }
 
-  void _enableIsolateSupport() {
-    _universe.hasIsolateSupport = true;
-    applyImpact(backend.enableIsolateSupport(forResolution: true));
-  }
-
   /// Adds an action to the deferred task queue.
   /// The action is performed the next time the resolution queue has been
   /// emptied.
   ///
   /// The queue is processed in FIFO order.
   void addDeferredAction(Entity entity, void action()) {
     if (queueIsClosed) {
       throw new SpannableAssertionFailure(
           entity,
           "Resolution work list is closed. "
@@ skipping 119 matching lines @@
 }
 
 typedef void _DeferredActionFunction();
 
 class _DeferredAction {
   final Element element;
   final _DeferredActionFunction action;
 
   _DeferredAction(this.element, this.action);
 }