Better suqpport for async VM frames.

lib/src/frame.dart

 // Copyright (c) 2013, 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 frame;
 
 
 import 'package:path/path.dart' as path;
 
 import 'trace.dart';
 
 // #1      Foo._bar (file:///home/nweiz/code/stuff.dart:42:21)
-final _vmFrame = new RegExp(
-    r'^#\d+\s+(\S.*) \((.+?):(\d+)(?::(\d+))?\)$');
+// #1      Foo._bar (file:///home/nweiz/code/stuff.dart:42)
+// #1      Foo._bar (file:///home/nweiz/code/stuff.dart)
+final _vmFrame = new RegExp(r'^#\d+\s+(\S.*) \((.+?)((?::\d+){0,2})\)$');
 
 //     at VW.call$0 (http://pub.dartlang.org/stuff.dart.js:560:28)
 //     at VW.call$0 (eval as fn
 //         (http://pub.dartlang.org/stuff.dart.js:560:28), efn:3:28)
 //     at http://pub.dartlang.org/stuff.dart.js:560:28
 final _v8Frame = new RegExp(
     r'^\s*at (?:(\S.*?)(?: \[as [^\]]+\])? \((.*)\)|(.*))$');
 
 // http://pub.dartlang.org/stuff.dart.js:560:28
 final _v8UrlLocation = new RegExp(r'^(.*):(\d+):(\d+)$');
@@ skipping 103 matching lines @@
       return new Frame(new Uri(), null, null, '...');
     }
 
     var match = _vmFrame.firstMatch(frame);
     if (match == null) {
       throw new FormatException("Couldn't parse VM stack trace line '$frame'.");
     }
 
     // Get the pieces out of the regexp match. Function, URI and line should
     // always be found. The column is optional.
-    var member = match[1].replaceAll("<anonymous closure>", "<fn>");
+    var member = match[1]
+        .replaceAll("<<anonymous closure>_async_body>", "<async>")
+        .replaceAll("<anonymous closure>", "<fn>");
     var uri = Uri.parse(match[2]);
-    var line = int.parse(match[3]);
-    var column = null;
-    var columnMatch = match[4];
-    if (columnMatch != null) {
-      column = int.parse(columnMatch);
-    }
+
+    var lineAndColumn = match[3].split(':');
+    var line = lineAndColumn.length > 1 ? int.parse(lineAndColumn[1]) : null;
+    var column = lineAndColumn.length > 2 ? int.parse(lineAndColumn[2]) : null;
     return new Frame(uri, line, column, member);
   }
 
   /// Parses a string representation of a Chrome/V8 stack frame.
   factory Frame.parseV8(String frame) {
     var match = _v8Frame.firstMatch(frame);
     if (match == null) {
       throw new FormatException("Couldn't parse V8 stack trace line '$frame'.");
     }
 
@@ skipping 123 matching lines @@
     // their stack frames. However, if we do get a relative path, we should
     // handle it gracefully.
     if (uriOrPath.contains('\\')) return path.windows.toUri(uriOrPath);
     return Uri.parse(uriOrPath);
   }
 
   Frame(this.uri, this.line, this.column, this.member);
 
   String toString() => '$location in $member';
 }