Inserted string validation as separate task in compiler.

frog/leg/tree_validator.dart

Index: frog/leg/tree_validator.dart
diff --git a/frog/leg/tree_validator.dart b/frog/leg/tree_validator.dart
index 9683721a6b0cb464feef6ece6dfdfa7c717647dd..e6d9035750d969db51f87ae4b05f523907e08540 100644
--- a/frog/leg/tree_validator.dart
+++ b/frog/leg/tree_validator.dart
@@ -55,12 +55,12 @@ class ValidatorVisitor extends AbstractVisitor {
 }
 
 class InvalidNodeError {
-  final Node node;
+  final Node  node;

[ahe, 2012/01/25 08:39:44]

Please revert this change.

[karlklose, 2012/01/25 08:47:26]

Remove extra space again.

[Lasse Reichstein Nielsen, 2012/01/26 10:14:20]

Done.

   final String message;
   InvalidNodeError(this.node, [this.message]);
 
   toString() {
-    String nodeString = new Unparser(true).unparse(node);
+    String nodeString = new Unparser(true).unparse(node );

[ahe, 2012/01/25 08:39:44]

Ditto.

[karlklose, 2012/01/25 08:47:26]

ditto.

[Lasse Reichstein Nielsen, 2012/01/26 10:14:20]

Done.

     String result = 'invalid node: $nodeString';
     if (message !== null) result = '$result ($message)';
     return result;