Support factory methods.

frog/leg/resolver.dart

 // Copyright (c) 2011, 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.
 
 class TreeElements {
   Map<Node, Element> map;
   TreeElements() : map = new LinkedHashMap<Node, Element>();
   operator []=(Node node, Element element) => map[node] = element;
   operator [](Node node) => map[node];
 }
@@ skipping 102 matching lines @@
   final Compiler compiler;
   final TreeElements mapping;
   final Element enclosingElement;
   bool inInstanceContext;
   Scope context;
 
   ResolverVisitor(Compiler compiler, Element element)
     : this.compiler = compiler,
       this.mapping  = new TreeElements(),
       this.enclosingElement = element,
-      inInstanceContext =
-        element.isInstanceMember() || element.kind == ElementKind.CONSTRUCTOR,
+      inInstanceContext = element.isInstanceMember()
+          || element.isGenerativeConstructor(),
       this.context  = element.isMember()
         ? new ClassScope(element.enclosingElement, compiler.universe)
         : new TopScope(compiler.universe);
 
   ResolverVisitor.from(ResolverVisitor other)
     : compiler = other.compiler,
       mapping = other.mapping,
       enclosingElement = other.enclosingElement,
       inInstanceContext = other.inInstanceContext,
       context = other.context;
@@ skipping 618 matching lines @@
 class TopScope extends Scope {
   Universe universe;
 
   TopScope(Universe this.universe) : super(null, null);
   Element lookup(SourceString name) => universe.find(name);
 
   Element add(Element element) {
     throw "Cannot add an element in the top scope";
   }
 }