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/*
*
* Copyright 2002-2004 The Ant-Contrib project
*
* 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 net.sf.antcontrib.cpptasks.parser;
/**
* An base class for objects that represent the state of an AbstractParser.
*
* @author CurtArnold
* @see AbstractParser
*/
public abstract class AbstractParserState {
private AbstractParser parser;
protected AbstractParserState(AbstractParser parser) {
if (parser == null) {
throw new NullPointerException("parser");
}
this.parser = parser;
}
/**
* Consume a character
*
* @return new state, may be null to ignore the rest of the line
*/
public abstract AbstractParserState consume(char ch);
protected AbstractParser getParser() {
return parser;
}
}