Fix bug 1011

frog/gen.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.
 
 /**
  * Top level generator object for writing code and keeping track of
  * dependencies.
  *
  * Should have two compilation models, but only one implemented so far.
  *
@@ skipping 539 matching lines @@
   _usedDynamicDispatchOnType(Type type) {
     if (typesWithDynamicDispatch == null) typesWithDynamicDispatch = new Set();
     typesWithDynamicDispatch.add(type);
   }
 
   writeDynamicDispatchMetadata() {
     if (typesWithDynamicDispatch == null) return;
     writer.comment('// ${typesWithDynamicDispatch.length} dynamic types.');
 
     typeTag(type) => type.definition.nativeType.name;
-    
+
     // Build a pre-order traversal over all the types and their subtypes.
     var seen = new Set();
     var types = [];
     visit(type) {
       if (seen.contains(type)) return;
       seen.add(type);
       for (final subtype in _orderCollectionValues(type.directSubtypes)) {
         visit(subtype);
       }
       types.add(type);
@@ skipping 1682 matching lines @@
           return value.invoke(this, ':negate', node, Arguments.EMPTY);
         } else {
           world.internalError('unimplemented: unary ${node.op}',
             node.span);
         }
       default:
         world.internalError('unimplemented: ${node.op}', node.span);
     }
   }
 
+  visitDeclaredIdentifier(DeclaredIdentifier node) {
+    world.error('Expected expression', node.span);
+  }
+
   visitAwaitExpression(AwaitExpression node) {
     world.internalError(
         'Await expressions should have been eliminated before code generation',
         node.span);
   }
 
   visitPostfixExpression(PostfixExpression node, [bool isVoid = false]) {
     var value = visitValue(node.body);
     if (value.type.isNum && !value.isFinal) {
       return new Value(value.type, '${value.code}${node.op}', node.span);
@@ skipping 441 matching lines @@
       result.add(new Value(world.varType, '\$$i', null, /*needsTemp:*/false));
     }
     for (int i = bareCount; i < length; i++) {
       var name = getName(i);
       if (name == null) name = '\$$i';
       result.add(new Value(world.varType, name, null, /*needsTemp:*/false));
     }
     return new Arguments(nodes, result);
   }
 }