org.ajax4jsf.io.parser.ParserState Maven / Gradle / Ivy

/**
 * Licensed under the Common Development and Distribution License,
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.sun.com/cddl/
 *   
 * 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 org.ajax4jsf.io.parser;

import java.io.IOException;

/**
 * Interface for curent parsing state in {@link org.ajax4jsf.io.parser.FastHtmlParser}
 * @author shura
 *
 */
public abstract class ParserState {
	
	/**
	 * Array of states allowed to transition from this state.
	 */
	ParserState nextStates[]={};

	ParserState getNextState(char c,ParsingContext context){
		for (int i = 0; i < nextStates.length; i++) {
			ParserState parserState = nextStates[i];
			if(parserState.isAcceptChar(c,context)){
				return parserState;
			}
		}
		return context.getBaseState();
	}
	
	/**
	 * Ask parser for allowed this state for given char.
	 * @param c
	 * @param context
	 * @return
	 */
	abstract boolean isAcceptChar(char c, ParsingContext context);
	
	/**
	 * Send current char or buffer content to output stream.
	 * @return
	 * @throws IOException 
	 */
	 void send(char c, ParsingContext context) throws IOException{
		 context.send(c);
	 }
	 
}