CharacterClassNegation.java
/*
* Copyright 2013 Michael Mackenzie High
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mackenziehigh.snowflake;
/**
* An instance of this class is a character-class that negates another character-class.
*
* @author Michael Mackenzie High
*/
final class CharacterClassNegation implements ICharacterClass
{
/**
* This is the character-class that must not match.
*/
final ICharacterClass negates;
/**
* Sole Constructor.
*
* @param negates are the negated character-class itself.
*/
public CharacterClassNegation(final ICharacterClass negates)
{
Utils.checkNonNull(negates);
this.negates = negates;
}
/**
* {@inheritDoc}
*/
@Override
public boolean match(final char c) { return !negates.match(c); }
}