Use entities in CommonElements interface.

pkg/compiler/lib/src/inferrer/builder.dart

 // Copyright (c) 2013, 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 simple_types_inferrer;
 
 import '../closure.dart' show ClosureClassMap;
 import '../common.dart';
 import '../common/names.dart' show Identifiers, Selectors;
 import '../compiler.dart' show Compiler;
 import '../constants/constant_system.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart' show ConstantValue, IntConstantValue;
-import '../elements/resolution_types.dart' show ResolutionDartType;
+import '../elements/resolution_types.dart'
+    show ResolutionDartType, ResolutionInterfaceType;
 import '../elements/elements.dart';
 import '../js_backend/backend_helpers.dart';
 import '../js_backend/js_backend.dart' as js;
 import '../native/native.dart' as native;
 import '../resolution/operators.dart' as op;
 import '../resolution/semantic_visitor.dart';
 import '../resolution/tree_elements.dart' show TreeElements;
 import '../tree/tree.dart' as ast;
 import '../types/constants.dart' show computeTypeMask;
 import '../types/types.dart' show TypeMask, GlobalTypeInferenceElementData;
@@ skipping 371 matching lines @@
             (operator == '!=' && !usePositive)) {
           // Type the elements as null.
           if (Elements.isLocal(receiverElement)) {
             locals.update(receiverElement, types.nullType, node);
           }
           if (Elements.isLocal(argumentElement)) {
             locals.update(argumentElement, types.nullType, node);
           }
         } else {
           // Narrow the elements to a non-null type.
-          ResolutionDartType objectType = closedWorld.commonElements.objectType;
+          ResolutionInterfaceType objectType =
+              closedWorld.commonElements.objectType;
           if (Elements.isLocal(receiverElement)) {
             narrow(receiverElement, objectType, node);
           }
           if (Elements.isLocal(argumentElement)) {
             narrow(argumentElement, objectType, node);
           }
         }
       }
     }
   }
@@ skipping 1607 matching lines @@
     return handleSuperNoSuchMethod(node, selector, mask, arguments);
   }
 
   TypeInformation handleSuperNoSuchMethod(ast.Send node, Selector selector,
       TypeMask mask, ArgumentsTypes arguments) {
     // Ensure we create a node, to make explicit the call to the
     // `noSuchMethod` handler.
     ClassElement cls = outermostElement.enclosingClass;
     MethodElement element = cls.lookupSuperMember(Identifiers.noSuchMethod_);
     if (!Selectors.noSuchMethod_.signatureApplies(element)) {
-      element = compiler.commonElements.objectClass
-          .lookupMember(Identifiers.noSuchMethod_);
+      ClassElement objectClass = compiler.commonElements.objectClass;
+      element = objectClass.lookupMember(Identifiers.noSuchMethod_);
     }
     return handleStaticSend(node, selector, mask, element, arguments);
   }
 
   /// Handle a .call invocation on the values retrieved from the super
   /// [element]. For instance `super.foo(bar)` where `foo` is a field or getter.
   TypeInformation handleSuperClosureCall(
       ast.Send node, Element element, ast.NodeList arguments) {
     ArgumentsTypes argumentTypes = analyzeArguments(arguments.nodes);
     Selector selector = elements.getSelector(node);
@@ skipping 884 matching lines @@
     Selector moveNextSelector = Selectors.moveNext;
     TypeMask moveNextMask = inTreeData.typeOfIteratorMoveNext(node);
 
     TypeInformation iteratorType = handleDynamicSend(node, iteratorSelector,
         iteratorMask, expressionType, new ArgumentsTypes.empty());
 
     return handleForInLoop(node, iteratorType, currentSelector, currentMask,
         moveNextSelector, moveNextMask);
   }
 }