01: package org.ofbiz.rules.parse.tokens;
02:
03: import java.io.*;
04:
05: /**
06: * <p><b>Title:</b> Slash State
07: * <p><b>Description:</b> None
08: * <p>Copyright (c) 1999 Steven J. Metsker.
09: * <p>Copyright (c) 2001 The Open For Business Project - www.ofbiz.org
10: *
11: * <p>Permission is hereby granted, free of charge, to any person obtaining a
12: * copy of this software and associated documentation files (the "Software"),
13: * to deal in the Software without restriction, including without limitation
14: * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15: * and/or sell copies of the Software, and to permit persons to whom the
16: * Software is furnished to do so, subject to the following conditions:
17: *
18: * <p>The above copyright notice and this permission notice shall be included
19: * in all copies or substantial portions of the Software.
20: *
21: * <p>THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22: * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24: * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
25: * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
26: * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
27: * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28: *
29: * <br>
30: * This state will either delegate to a comment-handling
31: * state, or return a token with just a slash in it.
32: *
33: * @author Steven J. Metsker
34: * @version 1.0
35: */
36: public class SlashState extends TokenizerState {
37:
38: protected SlashStarState slashStarState = new SlashStarState();
39:
40: protected SlashSlashState slashSlashState = new SlashSlashState();
41:
42: /**
43: * Either delegate to a comment-handling state, or return a
44: * token with just a slash in it.
45: *
46: * @return either just a slash token, or the results of
47: * delegating to a comment-handling state
48: */
49: public Token nextToken(PushbackReader r, int theSlash, Tokenizer t)
50: throws IOException {
51:
52: int c = r.read();
53:
54: if (c == '*') {
55: return slashStarState.nextToken(r, '*', t);
56: }
57: if (c == '/') {
58: return slashSlashState.nextToken(r, '/', t);
59: }
60: if (c >= 0) {
61: r.unread(c);
62: }
63: return new Token(Token.TT_SYMBOL, "/", 0);
64: }
65: }
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