Beginning of CSS parser using frog parsering infrastructure.

frog/css/cssselectorexception.dart

Index: frog/css/cssselectorexception.dart
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+// 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.
+
+
+/** Can be thrown on any Css runtime problem includes source location. */

[jimhug, 2011/11/09 16:04:03]

Not sure why a separate exception type is needed here?

[terry, 2011/11/09 21:56:06]

This is for runtime validate exceptions after parsing.  Maybe I should rename to
CssValidateException.

On 2011/11/09 16:04:03, jimhug wrote:

+class CssSelectorException implements Exception {
+  final String _message;
+  final SourceSpan _location;
+
+  CssSelectorException(this._message, [this._location = null]);
+
+  String toString() {
+    if (_location != null) {
+      return 'CssSelectorException: ${_location.toMessageString(_message)}';
+    } else {
+      return 'CssSelectorException: $_message';
+    }
+  }
+
+}