Token.java

/**********************************************************************
Copyright (c) 2009 Asfun Net.

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.asfun.jangod.parse;

import static net.asfun.jangod.parse.ParserConstants.*;

import java.io.Serializable;

public abstract class Token implements Serializable {

    private static final long serialVersionUID = -7513379852268838992L;

    protected String image;
    // useful for some token type
    protected String content;

    public Token(String image2) throws ParseException {
	image = image2;
	parse();
    }

    public String getImage() {
	return image;
    }

    @Override
    public String toString() {
	return image;
    }

    protected abstract void parse() throws ParseException;

    public abstract int getType();

    static Token newToken(int tokenKind, String image2) throws ParseException {
	switch (tokenKind) {
	case TOKEN_FIXED:
	    return new FixedToken(image2);
	case TOKEN_NOTE:
	    return new NoteToken(image2);
	case TOKEN_ECHO:
	    return new EchoToken(image2);
	case TOKEN_TAG:
	    return new TagToken(image2);
	case TOKEN_MACRO:
	    return new MacroToken(image2);
	default:
	    throw new ParseException("Creating a token with unknown type >>> "
		    + (char) tokenKind);
	}
    }

}