Implement toString on File and Directory objects.

sdk/lib/io/directory_impl.dart

Index: sdk/lib/io/directory_impl.dart
diff --git a/sdk/lib/io/directory_impl.dart b/sdk/lib/io/directory_impl.dart
index e4f3ee1513758da75c88e5bc373acdbced49e6bd..d96151f329d0144cf7a9923eb543d4a712ee68dc 100644
--- a/sdk/lib/io/directory_impl.dart
+++ b/sdk/lib/io/directory_impl.dart
@@ -226,7 +226,9 @@ class _Directory implements Directory {
     return new _DirectoryLister(_path, recursive);
   }
 
-  String get path { return _path; }
+  String get path => _path;
+
+  String toString() => "Directory: '$path'";

[Søren Gjesse, 2012/12/21 10:16:00]

Are you sure you want the "Directory: " prefix?

[Mads Ager (google), 2012/12/21 10:35:03]

Good question. I was thinking that it might be helpful for debugging purposes to
be able to print some entity and it will tell you what it is and the path.

 
   bool _isErrorResponse(response) {
     return response is List && response[0] != _SUCCESS_RESPONSE;