Parser fix for lambdas

frog/member.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.
 
 /** A formal parameter to a [Method]. */
 class Parameter {
   FormalNode definition;
 
   String name;
   Type type;
@@ skipping 17 matching lines @@
     }
 
     if (definition.value != null) {
       // To match VM, detect cases where value was not actually specified in
       // code and don't signal errors.
       // TODO(jimhug): Clean up after issue #352 is resolved.
       if (definition.value is NullExpression &&
           definition.value.span.start == definition.span.start) {
         return;
       }
-      if (method.isAbstract) {
-        world.error('default value not allowed on abstract methods',
-          definition.span);
-      } else if (method.name == '\$call' && method.definition.body == null) {
+      if (method.name == '\$call') {
         // TODO(jimhug): Need simpler way to detect "true" function types vs.
         //   regular methods being used as function types for closures.
-        world.error('default value not allowed on function type',
+        if (method.definition.body == null) {
+          world.error('default value not allowed on function type',
+            definition.span);
+        }
+      } else if (method.isAbstract) {
+        world.error('default value not allowed on abstract methods',
           definition.span);
       }
     } else if (isInitializer && !method.isConstructor) {
       world.error('initializer parameters only allowed on constructors',
           definition.span);
     }
   }
 
   genValue(MethodMember method, MethodGenerator context) {
     if (definition.value == null || value != null) return;
@@ skipping 1639 matching lines @@
   }
 
   void forEach(void f(Member member)) {
     factories.forEach((_, Map constructors) {
       constructors.forEach((_, Member member) {
         f(member);
       });
     });
   }
 }