001// Copyright 2004, 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry.util.text;
016
017/**
018 * Matches a given character only if the provided object does NOT match it.
019 * 
020 * @author mb
021 * @since 4.0
022 */
023public class InverseMatcher implements ICharacterMatcher
024{
025    private ICharacterMatcher _matcher;
026    
027    /**
028     * Creates a new object that inverts the matching rule of the provided matcher
029     * 
030     * @param matcher the matcher whose behaviour will be inverted
031     */
032    public InverseMatcher(ICharacterMatcher matcher)
033    {
034        _matcher = matcher;
035    }
036    
037    /**
038     * Matches the character only if the provided object does NOT match it.
039     * 
040     * @see org.apache.tapestry.util.text.ICharacterMatcher#matches(char)
041     */
042    public boolean matches(char ch)
043    {
044        return !_matcher.matches(ch);
045    }
046}