/*

 * Copyright 2003-2005 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.java_cup.internal.runtime;

/**

 * Defines the Scanner interface, which CUP uses in the default

 * implementation of <code>lr_parser.scan()</code>.  Integration

 * of scanners implementing <code>Scanner</code> is facilitated.

 *

 * @author David MacMahon <davidm@smartsc.com>

 */

/* *************************************************

  Interface Scanner

  Declares the next_token() method that should be

  implemented by scanners.  This method is typically

  called by lr_parser.scan().

 ***************************************************/

public interface Scanner {

    public Symbol next_token() throws java.lang.Exception;

}