CharToken.java

/**
 *  Copyright (C) 2010 dennis zhuang (killme2008@gmail.com)
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published
 *  by the Free Software Foundation; either version 2.1 of the License, or
 *  (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 **/
package com.googlecode.aviator.lexer.token;

import java.util.Map;


/**
 * Charactor token
 * 
 * @author dennis
 * 
 */
public class CharToken extends AbstractToken<Character> {
    private final char ch;
    private int startIndex;


    public char getCh() {
        return ch;
    }


    public CharToken(char peek, int startIndex) {
        super(startIndex, String.valueOf(peek));
        this.ch = peek;
    }


    public com.googlecode.aviator.lexer.token.Token.TokenType getType() {
        return TokenType.Char;
    }


    public Character getValue(Map<String, Object> env) {
        return ch;
    }


    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ch;
        result = prime * result + startIndex;
        return result;
    }


    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!super.equals(obj)) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        CharToken other = (CharToken) obj;
        if (ch != other.ch) {
            return false;
        }
        if (startIndex != other.startIndex) {
            return false;
        }
        return true;
    }

}