Handle super index SendSet operations.

pkg/compiler/lib/src/resolution/access_semantics.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.
 
 // TODO(johnniwinther): Temporarily copied from analyzer2dart. Merge when
 // we shared code with the analyzer and this semantic visitor is complete.
 
 /**
  * Code for classifying the semantics of identifiers appearing in a Dart file.
  */
@@ skipping 164 matching lines @@
   /// Read from a superclass field and write to a superclass setter.
   SUPER_FIELD_SETTER,
   /// Read from a superclass getter and write to a superclass setter.
   SUPER_GETTER_SETTER,
   /// Read from a superclass method (closurize) and write to a superclass
   /// setter.
   SUPER_METHOD_SETTER,
   /// Read from a superclass getter and write to a superclass field.
   SUPER_GETTER_FIELD,
 
-  /// Read from a superclass where the getter (and maybe setter) is unresolved.
+  /// Read from a superclass where the getter is unresolved.
   UNRESOLVED_SUPER_GETTER,
   /// Read from a superclass getter and write to an unresolved setter.
   UNRESOLVED_SUPER_SETTER,
 }
 
 /**
  * Data structure used to classify the semantics of a property access or method
  * or function invocation.
  */
 class AccessSemantics {
@@ skipping 28 matching lines @@
   /**
    * When [kind] is DYNAMIC_PROPERTY, the expression whose runtime type
    * determines the class in which [identifier] should be looked up.
    *
    * When [kind] is not DYNAMIC_PROPERTY, this field is always null.
    */
   /*Expression*/ get target => null;
 
   ConstantExpression get constant => null;
 
+  /// The element for the getter in case of a compound access,
+  /// [element] otherwise.
+  Element get getter => element;
+
+  /// The element for the setter in case of a compound access,
+  /// [element] otherwise.
+  Element get setter => element;
+
   AccessSemantics.expression()
       : kind = AccessKind.EXPRESSION;
 
   AccessSemantics.thisAccess()
       : kind = AccessKind.THIS;
 
   AccessSemantics.thisProperty()
       : kind = AccessKind.THIS_PROPERTY;
 
   AccessSemantics._(this.kind);
@@ skipping 295 matching lines @@
 
   RedirectingFactoryConstructorAccessSemantics(
       ConstructorAccessKind kind,
       Element element,
       DartType type,
       this.effectiveTargetSemantics)
       : super(kind, element, type);
 }