Support class and typedef literals as expressions.

lib/compiler/implementation/dart_backend/placeholder_collector.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.
 
 class LocalPlaceholder {
   final String identifier;
   final Set<Node> nodes;
   LocalPlaceholder(this.identifier) : nodes = new Set<Node>();
   int get hashCode => identifier.hashCode;
   String toString() =>
@@ skipping 116 matching lines @@
     // Another ugly case: <lib prefix>.<top level> is represented as
     // receiver: lib prefix, selector: top level.
     if (element.isTopLevel() && node.receiver != null) {
       assert(elements[node.receiver].isPrefix());
       // Hack: putting null into map overrides receiver of original node.
       collector.makeNullPlaceholder(node.receiver);
     }
   }
 
   internalError(String reason, {Node node}) {
-    collector.internalError(reason, node);
+    collector.internalError(reason, node: node);
+  }
+
+  visitTypeReferenceSend(Send node) {
+    ClassElement element = elements[node];
+    collector.makeElementPlaceholder(node.selector, element);
   }
 }
 
 class PlaceholderCollector extends Visitor {
   final Compiler compiler;
   final Set<String> fixedMemberNames; // member names which cannot be renamed.
   final Map<Element, ElementAst> elementAsts;
   final Set<Node> nullNodes;  // Nodes that should not be in output.
   final Set<Identifier> unresolvedNodes;
   final Map<Element, Set<Identifier>> elementNodes;
@@ skipping 213 matching lines @@
         LocalPlaceholder localPlaceholder = new LocalPlaceholder(name);
         currentFunctionScope.localPlaceholders.add(localPlaceholder);
         return localPlaceholder;
       });
     }
 
     getLocalPlaceholder().nodes.add(identifier);
   }
 
   void internalError(String reason, {Node node}) {
-    compiler.cancel(reason: reason, node: node);
+    compiler.cancel(reason, node: node);
   }
 
   void unreachable() { internalError('Unreachable case'); }
 
   visit(Node node) => (node == null) ? null : node.accept(this);
 
   visitNode(Node node) { node.visitChildren(this); }  // We must go deeper.
 
   visitSend(Send send) {
     new SendVisitor(this, treeElements).visitSend(send);
@@ skipping 254 matching lines @@
 
   visitBlock(Block node) {
     for (Node statement in node.statements.nodes) {
       if (statement is VariableDefinitions) {
         makeVarDeclarationTypePlaceholder(statement);
       }
     }
     node.visitChildren(this);
   }
 }