Rename BadNumberFormatException -> FormatException.

corelib/src/exceptions.dart

 // Copyright (c) 2012, 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.
 
 // Exceptions are thrown either by the VM or from Dart code.
 
 /**
  * Interface implemented by all core library exceptions.
  */
 interface Exception default ExceptionImplementation {
@@ skipping 92 matching lines @@
   String toString() => "Out of Memory";
 }
 
 
 class StackOverflowException implements Exception {
   const StackOverflowException();
   String toString() => "Stack Overflow";
 }
 
 
-class BadNumberFormatException implements Exception {
-  const BadNumberFormatException(String this._s);
-  String toString() => "BadNumberFormatException: '$_s'";
-  final String _s;
+/**
+ * Exception thrown when a string or some other data does not have an expected
+ * format and cannot be parsed or processed.
+ */
+class FormatException implements Exception {
+  /**
+   * A message describing the format error.
+   */
+  final String message;

[Ivan Posva, 2012/08/03 20:36:27]

Is it intentional that you are making the message public here?

+
+  /**
+   * Creates a new FormatException with an optional error [message].
+   */
+  const FormatException([this.message = ""]);
+
+  String toString() => "FormatException: $message";
 }
 
 
 class WrongArgumentCountException implements Exception {
   const WrongArgumentCountException();
   String toString() => "WrongArgumentCountException";
 }
 
 
 class NullPointerException implements Exception {
@@ skipping 48 matching lines @@
   String toString() => "IllegalJSRegExpException: '$_pattern' '$_errmsg'";
   final String _pattern;
   final String _errmsg;
 }
 
 
 class IntegerDivisionByZeroException implements Exception {
   const IntegerDivisionByZeroException();
   String toString() => "IntegerDivisionByZeroException";
 }