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    
015    package 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     */
023    public 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    }