Support class and typedef literals as expressions.

lib/compiler/implementation/resolved_visitor.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.
 
 part of dart2js;
 
 abstract class ResolvedVisitor<R> extends Visitor<R> {
   TreeElements elements;
 
   ResolvedVisitor(this.elements);
 
   R visitSend(Send node) {
     if (node.isSuperCall) {
       return visitSuperSend(node);
     } else if (node.isOperator) {
       return visitOperatorSend(node);
     } else if (node.isPropertyAccess) {
-      return visitGetterSend(node);
+      Element element = elements[node];
+      if (!Elements.isUnresolved(element) && element.impliesType()) {
+        // A reference to a class literal, typedef or type variable.
+        return visitTypeReferenceSend(node);
+      } else {
+        return visitGetterSend(node);
+      }
     } else if (Elements.isClosureSend(node, elements[node])) {
       return visitClosureSend(node);
     } else {
       Element element = elements[node];
       if (Elements.isUnresolved(element)) {
         if (element == null) {
           // Example: f() with 'f' unbound.
           // This can only happen inside an instance method.
           return visitDynamicSend(node);
         } else {
           return visitStaticSend(node);
         }
-      } else if (element.kind == ElementKind.CLASS) {
-        internalError("Cannot generate code for send", node: node);
+      } else if (element.impliesType()) {
+        // A reference to a class literal, typedef or type variable.
+        return visitTypeReferenceSend(node);
       } else if (element.isInstanceMember()) {
         // Example: f() with 'f' bound to instance method.
         return visitDynamicSend(node);
       } else if (identical(element.kind, ElementKind.FOREIGN)) {
         return visitForeignSend(node);
       } else if (!element.isInstanceMember()) {
         // Example: A.f() or f() with 'f' bound to a static function.
         // Also includes new A() or new A.named() which is treated like a
         // static call to a factory.
         return visitStaticSend(node);
       } else {
         internalError("Cannot generate code for send", node: node);
       }
     }
   }
 
   abstract R visitSuperSend(Send node);
   abstract R visitOperatorSend(Send node);
   abstract R visitGetterSend(Send node);
   abstract R visitClosureSend(Send node);
   abstract R visitDynamicSend(Send node);
   abstract R visitForeignSend(Send node);
   abstract R visitStaticSend(Send node);
+  abstract R visitTypeReferenceSend(Send node);
 
   abstract void internalError(String reason, {Node node});
 
   R visitNode(Node node) {
     internalError("Unhandled node", node: node);
   }
 }