/*******************************************************************************
 * Copyright (c) 2014 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma.analysis;

public class Token implements Comparable<Token>
{
	public int start;
	public int end;
	public String text;
	
	public Token( int start, int end )
	{
		this( start, end, null );
	}
	
	public Token( int start, int end, String source )
	{
		this.start = start;
		this.end = end;
		if( source != null )
		{
			this.text = source.substring( start, end );
		}
	}
	
	public boolean contains( int pos )
	{
		return pos >= start && pos <= end;
	}

	@Override
	public int compareTo( Token other )
	{
		return start - other.start;
	}
	
	@Override
	public boolean equals( Object other )
	{
		if( other instanceof Token )
		{
			return equals( (Token)other );
		}
		return false;
	}
	
	public boolean equals( Token other )
	{
		return start == other.start && end == other.end;
	}
	
	@Override
	public String toString( )
	{
		return String.format( "[%d,%d]", start, end );
	}
}