matcherror.scala

来自「JAVA 语言的函数式编程扩展」· SCALA 代码 · 共 28 行

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2002-2007, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

// $Id: MatchError.scala 10366 2007-03-16 13:34:42Z michelou $


package scala

import Predef._

/** This class implements errors which are thrown whenever an
 *  object doesn't match any pattern of a pattern matching
 *  expression.
 *  
 *  @author  Matthias Zenger
 *  @author  Martin Odersky
 *  @version 1.1, 05/03/2004
 */
final class MatchError(msg: String) extends RuntimeException(msg) {
  def this(obj: Any) =
    this(if (null != obj) obj.toString() else "null")
}