Better dependency tracking

sdk/lib/_internal/compiler/implementation/resolution/registry.dart

 // Copyright (c) 2014, 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.
 
 part of resolution;
 
 /// [ResolutionRegistry] collects all resolution information. It stores node
 /// related information in a [TreeElements] mapping and registers calls with
 /// [Backend], [World] and [Enqueuer].
 // TODO(johnniwinther): Split this into an interface and implementation class.
 class ResolutionRegistry extends Registry {
   final Compiler compiler;
   final TreeElementMapping mapping;
 
   ResolutionRegistry(Compiler compiler, Element element)
       : this.internal(compiler, _ensureTreeElements(element));
 
   ResolutionRegistry.internal(this.compiler, this.mapping);
 
   bool get isForResolution => true;
 
-  Element get currentElement => mapping.currentElement;
-
   ResolutionEnqueuer get world => compiler.enqueuer.resolution;
 
   World get universe => compiler.world;
 
   Backend get backend => compiler.backend;
 
   //////////////////////////////////////////////////////////////////////////////
   //  Node-to-Element mapping functionality.
   //////////////////////////////////////////////////////////////////////////////
 
@@ skipping 182 matching lines @@
 
   void registerClosure(LocalFunctionElement element) {
     world.registerClosure(element, this);
   }
 
   void registerSuperUse(Node node) {
     mapping.superUses.add(node);
   }
 
   void registerDynamicInvocation(Selector selector) {
-    world.registerDynamicInvocation(currentElement, selector);
+    world.registerDynamicInvocation(selector);
   }
 
   void registerSuperNoSuchMethod() {
     backend.resolutionCallbacks.onSuperNoSuchMethod(this);
   }
 
   void registerClassUsingVariableExpression(ClassElement element) {
     backend.registerClassUsingVariableExpression(element);
   }
 
@@ skipping 11 matching lines @@
   // needed to lookup types in the current scope.
   void registerJsCall(Node node, ResolverVisitor visitor) {
     world.registerJsCall(node, visitor);
   }
 
   void registerGetOfStaticFunction(FunctionElement element) {
     world.registerGetOfStaticFunction(element);
   }
 
   void registerDynamicGetter(Selector selector) {
-    world.registerDynamicGetter(currentElement, selector);
+    world.registerDynamicGetter(selector);
   }
 
   void registerDynamicSetter(Selector selector) {
-    world.registerDynamicSetter(currentElement, selector);
+    world.registerDynamicSetter(selector);
   }
 
   void registerConstSymbol(String name) {
     backend.registerConstSymbol(name, this);
   }
 
   void registerSymbolConstructor() {
     backend.resolutionCallbacks.onSymbolConstructor(this);
   }
 
@@ skipping 69 matching lines @@
 
   void registerAssert(Send node) {
     mapping.setAssert(node);
     backend.resolutionCallbacks.onAssert(node, this);
   }
 
   bool isAssert(Send node) {
     return mapping.isAssert(node);
   }
 }