NumberToken.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;


/**
 * A Number token
 * 
 * @author dennis
 * 
 */
public class NumberToken extends AbstractToken<Number> {

    private Number value;


    public NumberToken(Number value, String lexeme) {
        super(-1, lexeme);
        this.value = value;
    }


    public NumberToken(Number value, String lexeme, int startIndex) {
        super(startIndex, lexeme);
        this.value = value;
    }


    public void setNumber(Number number) {
        this.value = number;
    }


    public Number getNumber() {
        return this.value;
    }


    public Number getValue(Map<String, Object> env) {
        return value;
    }


    public TokenType getType() {
        return TokenType.Number;
    }


    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((value == null) ? 0 : value.hashCode());
        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;
        }
        NumberToken other = (NumberToken) obj;
        if (value == null) {
            if (other.value != null) {
                return false;
            }
        }
        else if (!value.equals(other.value)) {
            return false;
        }
        return true;
    }

}