Implement literal maps.

dart/frog/leg/tree/nodes.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.
 
 interface Visitor<R> {
   R visitBlock(Block node);
   R visitBreakStatement(BreakStatement node);
   R visitCatchBlock(CatchBlock node);
   R visitClassNode(ClassNode node);
   R visitConditional(Conditional node);
@@ skipping 1254 matching lines @@
 
   Token getEndToken() => semicolonToken;
 }
 
 class LiteralMap extends Expression {
   final NodeList typeArguments;
   final NodeList entries;
 
   LiteralMap(this.typeArguments, this.entries);
 
+  bool isConst() => false; // TODO(ahe): Store constness.

[ngeoffray, 2012/03/01 08:36:09]

Where is this used?

[ahe, 2012/03/06 15:34:12]

When I create the list of key/value pairs.

+
   LiteralMap asLiteralMap() => this;
 
   accept(Visitor visitor) => visitor.visitLiteralMap(this);
 
   visitChildren(Visitor visitor) {
     if (typeArguments != null) typeArguments.accept(visitor);
     entries.accept(visitor);
   }
 
   Token getBeginToken() => firstBeginToken(typeArguments, entries);
@@ skipping 288 matching lines @@
   static bool isConstructorRedirect(Send node) {
     return (node.receiver === null &&
             node.selector.asIdentifier() !== null &&
             node.selector.asIdentifier().isThis()) ||
            (node.receiver !== null &&
             node.receiver.asIdentifier() !== null &&
             node.receiver.asIdentifier().isThis() &&
             node.selector.asIdentifier() !== null);
   }
 }