Test ResolutionImpact equivalence.

pkg/compiler/lib/src/serialization/modelz.dart

 // Copyright (c) 2015, 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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
@@ skipping 291 matching lines @@
       Element member = members.getElement(key);
       if (member != null) {
         f(member);
       }
     });
   }
 }
 
 class AbstractFieldElementZ extends ElementZ implements AbstractFieldElement {
   final String name;
-  final FunctionElement getter;
-  final FunctionElement setter;
+  final GetterElementZ getter;
+  final SetterElementZ setter;
 
-  AbstractFieldElementZ(this.name, this.getter, this.setter);
+  AbstractFieldElementZ(this.name, this.getter, this.setter) {
+    if (getter != null) {
+      getter.abstractField = this;
+      getter.setter = setter;
+    }
+    if (setter != null) {
+      setter.abstractField = this;
+      setter.getter = getter;
+    }
+  }
 
   FunctionElement get _canonicalElement => getter != null ? getter : setter;
 
   @override
   ElementKind get kind => ElementKind.ABSTRACT_FIELD;
 
   @override
   accept(ElementVisitor visitor, arg) {
     return visitor.visitAbstractFieldElement(this, arg);
   }
@@ skipping 1016 matching lines @@
          MemberElementMixin
     implements MethodElement {
   FunctionElementZ(ObjectDecoder decoder)
       : super(decoder);
 
   @override
   ElementKind get kind => ElementKind.FUNCTION;
 
   @override
   accept(ElementVisitor visitor, arg) {
-    return visitor.visitFunctionElement(this, arg);
+    return visitor.visitMethodElement(this, arg);
   }
 
   @override
   bool get isOperator => _decoder.getBool(Key.IS_OPERATOR);
 }
 
 class TopLevelFunctionElementZ extends FunctionElementZ
     with LibraryMemberMixin {
   TopLevelFunctionElementZ(ObjectDecoder decoder)
       : super(decoder);
@@ skipping 52 matching lines @@
          AstElementMixin,
          ParametersMixin,
          FunctionTypedElementMixin,
          TypedElementMixin
     implements LocalFunctionElement {
   LocalFunctionElementZ(ObjectDecoder decoder)
       : super(decoder);
 
   @override
   accept(ElementVisitor visitor, arg) {
-    return visitor.visitFunctionElement(this, arg);
+    return visitor.visitLocalFunctionElement(this, arg);
   }
 
   @override
   ElementKind get kind => ElementKind.FUNCTION;
 }
 
 abstract class GetterElementZ extends DeserializedElementZ
     with AnalyzableElementMixin,
          AstElementMixin,
          FunctionTypedElementMixin,
          ParametersMixin,
          TypedElementMixin,
          MemberElementMixin
-    implements FunctionElement {
+    implements GetterElement {
+
+  AbstractFieldElement abstractField;
+  SetterElement setter;
 
   GetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 
   @override
   ElementKind get kind => ElementKind.GETTER;
 
   @override
   accept(ElementVisitor visitor, arg) {
-    return visitor.visitFunctionElement(this, arg);
+    return visitor.visitGetterElement(this, arg);
   }
 }
 
 class TopLevelGetterElementZ extends GetterElementZ with LibraryMemberMixin {
   TopLevelGetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 }
 
 class StaticGetterElementZ extends GetterElementZ
     with ClassMemberMixin, StaticMemberMixin {
   StaticGetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 }
 
 class InstanceGetterElementZ extends GetterElementZ
     with ClassMemberMixin, InstanceMemberMixin {
   InstanceGetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 }
 
 abstract class SetterElementZ extends DeserializedElementZ
     with AnalyzableElementMixin,
          AstElementMixin,
          FunctionTypedElementMixin,
          ParametersMixin,
          TypedElementMixin,
          MemberElementMixin
-    implements FunctionElement {
+    implements SetterElement {
+
+  AbstractFieldElement abstractField;
+  GetterElement getter;
 
   SetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 
   @override
   ElementKind get kind => ElementKind.SETTER;
 
   @override
   accept(ElementVisitor visitor, arg) {
-    return visitor.visitFunctionElement(this, arg);
+    return visitor.visitSetterElement(this, arg);
   }
 }
 
 class TopLevelSetterElementZ extends SetterElementZ with LibraryMemberMixin {
   TopLevelSetterElementZ(ObjectDecoder decoder)
       : super(decoder);
 }
 
 class StaticSetterElementZ extends SetterElementZ
     with ClassMemberMixin, StaticMemberMixin {
@@ skipping 449 matching lines @@
   }
 
   @override
   ElementKind get kind => ElementKind.PREFIX;
 
   @override
   Element lookupLocalMember(String memberName) {
     return _unsupported('lookupLocalMember');
   }
 }