dart2js: Add elements to the emitter's model.

pkg/compiler/lib/src/js_emitter/model.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.
 
 library dart2js.new_js_emitter.model;
 
 import '../js/js.dart' as js show Expression;
 import '../constants/values.dart' show ConstantValue;
 
+import '../common.dart';
+
 class Program {
   final List<Output> outputs;
   final bool outputContainsConstantList;
   /// A map from load id to the list of outputs that need to be loaded.
   final Map<String, List<Output>> loadMap;
 
   Program(this.outputs, this.outputContainsConstantList, this.loadMap);
 }
 
 /**
@@ skipping 82 matching lines @@
 
 class Constant {
   final String name;
   final Holder holder;
   final ConstantValue value;
 
   Constant(this.name, this.holder, this.value);
 }
 
 class Library {
+  /// The element should only be used during the transition to the new model.
+  /// Uses indicate missing information in the model.
+  final Element element;
+
   final String uri;
   final List<StaticMethod> statics;
   final List<Class> classes;
 
-  Library(this.uri, this.statics, this.classes);
+  Library(this.element, this.uri, this.statics, this.classes);
 }
 
 class StaticField {
+  /// The element should only be used during the transition to the new model.
+  /// Uses indicate missing information in the model.
+  final Element element;
+
   final String name;
   // TODO(floitsch): the holder for static fields is the isolate object. We
   // could remove this field and use the isolate object directly.
   final Holder holder;
   final js.Expression code;
   final bool isFinal;
   final bool isLazy;
 
-  StaticField(this.name, this.holder, this.code,
+  StaticField(this.element,
+              this.name, this.holder, this.code,
               this.isFinal, this.isLazy);
 }
 
 class Class {
+  /// The element should only be used during the transition to the new model.
+  /// Uses indicate missing information in the model.
+  final Element element;
+
   final String name;
   final Holder holder;
   Class _superclass;
   final List<Method> methods;
   final List<InstanceField> fields;
   final bool onlyForRti;
   final bool isDirectlyInstantiated;
 
   /// Whether the class must be evaluated eagerly.
   bool isEager = false;
 
-  Class(this.name, this.holder, this.methods, this.fields,
+  Class(this.element,
+        this.name, this.holder, this.methods, this.fields,
         {this.onlyForRti,
          this.isDirectlyInstantiated}) {
     assert(onlyForRti != null);
     assert(isDirectlyInstantiated != null);
   }
 
   bool get isMixinApplication => false;
   Class get superclass => _superclass;
 
   void setSuperclass(Class superclass) {
     _superclass = superclass;
   }
 
   String get superclassName
       => (superclass == null) ? "" : superclass.name;
   int get superclassHolderIndex
       => (superclass == null) ? 0 : superclass.holder.index;
 }
 
 class MixinApplication extends Class {
   Class _mixinClass;
 
-  MixinApplication(String name, Holder holder,
+  MixinApplication(Element element,
+                   String name, Holder holder,
                    List<Method> methods,
                    List<InstanceField> fields,
                    {bool onlyForRti,
                     bool isDirectlyInstantiated})
-      : super(name, holder, methods, fields,
+      : super(element,
+              name, holder, methods, fields,
               onlyForRti: onlyForRti,
               isDirectlyInstantiated: isDirectlyInstantiated);
 
   bool get isMixinApplication => true;
   Class get mixinClass => _mixinClass;
 
   void setMixinClass(Class mixinClass) {
     _mixinClass = mixinClass;
   }
 }
 
 class InstanceField {
+  /// The element should only be used during the transition to the new model.
+  /// Uses indicate missing information in the model.
+  final Element element;
+
   final String name;
 
   /// 00: Does not need any getter.
   /// 01:  function() { return this.field; }
   /// 10:  function(receiver) { return receiver.field; }
   /// 11:  function(receiver) { return this.field; }
   final int getterFlags;
 
   /// 00: Does not need any setter.
   /// 01:  function(value) { this.field = value; }
   /// 10:  function(receiver, value) { receiver.field = value; }
   /// 11:  function(receiver, value) { this.field = value; }
   final int setterFlags;
 
   // TODO(floitsch): support renamed fields.
-  InstanceField(this.name, this.getterFlags, this.setterFlags);
+  InstanceField(this.element, this.name, this.getterFlags, this.setterFlags);
 
   bool get needsGetter => getterFlags != 0;
   bool get needsSetter => setterFlags != 0;
 }
 
 class Method {
+  /// The element should only be used during the transition to the new model.
+  /// Uses indicate missing information in the model.
+  final Element element;
+
   final String name;
   final js.Expression code;
-  Method(this.name, this.code);
+  Method(this.element, this.name, this.code);
+}
+
+class StubMethod extends Method {
+  StubMethod(String name, js.Expression code) : super(null, name, code);
 }
 
 class StaticMethod extends Method {
   final Holder holder;
-  StaticMethod(String name, this.holder, js.Expression code)
-      : super(name, code);
+  StaticMethod(Element element, String name, this.holder, js.Expression code)
+      : super(element, name, code);
 }
+
+class StaticStubMethod extends StaticMethod {
+  StaticStubMethod(String name, Holder holder, js.Expression code)
+      : super(null, name, holder, code);
+}