Add ConstantConstructor to ConstantExpression system.

pkg/analyzer2dart/lib/src/modely.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 analyzer2dart.element_converter;
 
 
 /// Base [dart2js.Element] implementation for converted analyzer elements.
 class ElementY extends dart2js.Element {
   final ElementConverter converter;
@@ skipping 402 matching lines @@
 
   @override
   bool get isConst => false;
 
   LocalFunctionElementY(ElementConverter converter,
                         analyzer.FunctionElement element)
       : super(converter, element);
 }
 
 class ParameterElementY extends ElementY
-    with AnalyzableElementY, AstElementY
+    with AnalyzableElementY, AstElementY, VariableElementMixin
     implements dart2js.ParameterElement {
 
   analyzer.ParameterElement get element => super.element;
 
   @override
   dart2js.ElementKind get kind => dart2js.ElementKind.PARAMETER;
 
   @override
   dart2js.DartType get type => converter.convertType(element.type);
 
@@ skipping 18 matching lines @@
     assert(!element.isInitializingFormal);
   }
 
   @override
   get executableContext => unsupported('executableContext');
 
   @override
   get functionDeclaration => unsupported('functionDeclaration');
 
   @override
-  get initializer => unsupported('initializer');
-
-  @override
-  get memberContext => unsupported('memberContext');
-
-  @override
   get functionSignature => unsupported('functionSignature');
 }
 
 class TypeDeclarationElementY extends ElementY
     with AnalyzableElementY, AstElementY
     implements dart2js.TypeDeclarationElement {
 
   TypeDeclarationElementY(ElementConverter converter,
                           analyzer.Element element)
       : super(converter, element);
@@ skipping 233 matching lines @@
   get functionSignature => unsupported('functionSignature');
 }
 
 abstract class VariableElementMixin
     implements ElementY, dart2js.VariableElement {
   @override
   get initializer => unsupported('initializer');
 
   @override
   get memberContext => unsupported('memberContext');
+
+  @override
+  get constant => unsupported('constant');
 }
 
 class TopLevelVariableElementY extends ElementY
     with AnalyzableElementY,
          AstElementY,
          TopLevelElementMixin,
          VariableElementMixin,
          MemberElementMixin
     implements dart2js.FieldElement {
 
@@ skipping 123 matching lines @@
   get definingConstructor => unsupported('definingConstructor');
 
   @override
   get effectiveTarget => unsupported('effectiveTarget');
 
   @override
   get immediateRedirectionTarget => unsupported('immediateRedirectionTarget');
 
   @override
   get nestedClosures => unsupported('nestedClosures');
+
+  @override
+  get constantConstructor => unsupported('constantConstructor');
+
+  @override
+  get isFromEnvironmentConstructor {
+    unsupported('isFromEnvironmentConstructor');
+  }
 }
 
 class InstanceMethodElementY extends ElementY
     with AnalyzableElementY,
          AstElementY,
          FunctionElementMixin,
          ClassMemberMixin,
          MemberElementMixin
     implements dart2js.MethodElement {
 
@@ skipping 18 matching lines @@
                          analyzer.MethodElement element)
       : super(converter, element);
 
   @override
   get nestedClosures => unsupported('nestedClosures');
 }
 
 abstract class MemberElementMixin implements dart2js.MemberElement {
   dart2js.Name get memberName => new dart2js.Name(name, library);
 }