001package votorola.g.lang; // Copyright 2006, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE. 002 003import java.lang.reflect.UndeclaredThrowableException; 004 005 006/** A null implementation of a catcher that re-throws all errors and exceptions. 007 */ 008public @ThreadSafe final class Catcher0R<S> implements Catcher<S> 009{ 010 011 private Catcher0R() {} 012 013 014 015 /** The single instance of Catcher0R. 016 */ 017 @SuppressWarnings( "unchecked" ) 018 public static <S> Catcher0R<S> i() { return (Catcher0R<S>)instance; } 019 020 021 022 // - C a t c h e r -------------------------------------------------------------------- 023 024 025 /** Immediately re-throws the error. Subclasses that override this method would 026 * normally also re-throw it (or call super.catchError) taking care not to drop it 027 * first. 028 */ 029 public void catchError( S source, Error r ) { throw r; } 030 031 032 033 /** Immediately re-throws the exception. If it is not a RuntimeException, then it is 034 * first wrapped as an {@linkplain java.lang.reflect.UndeclaredThrowableException 035 * UndeclaredThrowableException}. 036 */ 037 public void catchException( S source, Exception x ) 038 { 039 if( x instanceof RuntimeException ) throw (RuntimeException)x; 040 else throw new UndeclaredThrowableException( x ); 041 } 042 043 044 045////////////////////////////////////////////////////////////////////////////////////////// 046// Last, so static fields above initialize, and are available during instantiation below 047 048 049 private static final Catcher0R<Object> instance = new Catcher0R<Object>(); 050 051 052 053}