01: /*
02: * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.java_cup.internal.runtime;
27:
28: /**
29: * Defines the Scanner interface, which CUP uses in the default
30: * implementation of <code>lr_parser.scan()</code>. Integration
31: * of scanners implementing <code>Scanner</code> is facilitated.
32: *
33: * @version last updated 23-Jul-1999
34: * @author David MacMahon <davidm@smartsc.com>
35: */
36:
37: /* *************************************************
38: Interface Scanner
39:
40: Declares the next_token() method that should be
41: implemented by scanners. This method is typically
42: called by lr_parser.scan().
43: ***************************************************/
44: public interface Scanner {
45: public Symbol next_token() throws java.lang.Exception;
46: }
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