New CSS parser written in Dart to replace pyparser

frog/file_system_node.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.
 
 #library('file_system_node');
 
 #import('file_system.dart');
 #import('lib/node/node.dart');
 
 /** File system implementation using nodejs api's (for self-hosted compiler). */
@@ skipping 25 matching lines @@
 
       try {
         final stat = fs.statSync(subpath);
 
         if (stat.isDirectory()) {
           existing = subpath;
         } else {
           throw 'Cannot create directory $path because $existing exists and ' +
               'is not a directory.';
         }
-      } catch (e) {
+      } catch (var e) {

[Jennifer Messerly, 2011/12/20 22:28:15]

Is this just a style change, or did the compiler need this for correctness?

style wise I suspect we'll move to not having "var" -- although frog's for-in
loops are mostly not doing that yet.

[terry, 2011/12/20 22:50:40]

I did this because DartC errors if no var and I wrote CSS using the DartEditor. 
But I can remove this.

On 2011/12/20 22:28:15, John Messerly wrote:

         // Ugly hack. We only want to catch ENOENT exceptions from fs.statSync
         // which means the path we're trying doesn't exist. Since this is coming
         // from node, we can't check the exception's type.
         if (e.toString().indexOf('ENOENT') != -1) break;
 
         // Re-throw any other exceptions.
         throw e;
       }
     }
 
@@ skipping 17 matching lines @@
         } else if (stat.isFile()) {
           // Try to remove the file.
           fs.unlinkSync(subpath);
         }
       }
     }
 
     fs.rmdirSync(path);
   }
 }