Correctly handle const constructors with type parameters.

lib/compiler/implementation/resolver.dart

 // Copyright (c) 2012, 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.
 
 abstract class TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   DartType getType(TypeAnnotation annotation);
   bool isParameterChecked(Element element);
 }
@@ skipping 2597 matching lines @@
     if (result === null) {
       String fullConstructorName = cls.name.slowToString();
       if (constructorName !== const SourceString('')) {
         fullConstructorName = '$fullConstructorName'
                               '.${constructorName.slowToString()}';
       }
       return failOrReturnErroneousElement(cls, diagnosticNode,
                                           new SourceString(fullConstructorName),
                                           MessageKind.CANNOT_FIND_CONSTRUCTOR,
                                           [fullConstructorName]);
+    } else if (inConstContext &&

[ahe, 2012/09/21 11:52:21]

This isn't right.

[ngeoffray, 2012/09/21 12:27:30]

Added a couple of TODOs.

+               (result.modifiers == null || !result.modifiers.isConst())) {
+      error(diagnosticNode, MessageKind.CONSTRUCTOR_IS_NOT_CONST);
     }
     return result;
   }
 
   visitNewExpression(NewExpression node) {
     Node selector = node.send.selector;
     Element e = visit(selector);
     if (!Elements.isUnresolved(e) && e.kind === ElementKind.CLASS) {
       ClassElement cls = e;
       cls.ensureResolved(compiler);
@@ skipping 197 matching lines @@
 
   Element localLookup(SourceString name) => library.find(name);
   Element lookup(SourceString name) => localLookup(name);
   Element lexicalLookup(SourceString name) => localLookup(name);
 
   Element add(Element newElement) {
     throw "Cannot add an element in the top scope";
   }
   String toString() => '$element';
 }