01: /*BEGIN_COPYRIGHT_BLOCK
02: *
03: * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
04: * All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions are met:
08: * * Redistributions of source code must retain the above copyright
09: * notice, this list of conditions and the following disclaimer.
10: * * Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
14: * names of its contributors may be used to endorse or promote products
15: * derived from this software without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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34: *
35: * END_COPYRIGHT_BLOCK*/
36:
37: package edu.rice.cs.drjava.model.definitions.reducedmodel;
38:
39: /**
40: * Shadowing state that corresponds to being inside a line comment.
41: * @version $Id: InsideLineComment.java 4255 2007-08-28 19:17:37Z mgricken $
42: */
43: public class InsideLineComment extends ReducedModelState {
44: public static final InsideLineComment ONLY = new InsideLineComment();
45:
46: private InsideLineComment() {
47: }
48:
49: /**
50: * Walk function for inside line comment.
51: * <ol>
52: * <li> If we've reached the end of the list, return.
53: * <li> If we find //, /* or * /, split them into two separate braces.
54: * The cursor will be on the first of the two new braces.
55: * <li> If current brace = \n, mark current brace FREE, next(), and
56: * go to updateFree.<BR>
57: * Else, mark current brace as LINE_COMMENT, goto next, and recur.
58: * </ol>
59: */
60: ReducedModelState update(TokenList.Iterator copyCursor) {
61: if (copyCursor.atEnd())
62: return STUTTER;
63: copyCursor._splitCurrentIfCommentBlock(true, false);
64: _combineCurrentAndNextIfFind("", "", copyCursor);
65: _combineCurrentAndNextIfEscape(copyCursor);
66:
67: String type = copyCursor.current().getType();
68:
69: if (type.equals("\n")) {
70: copyCursor.current().setState(FREE);
71: copyCursor.next();
72: return FREE;
73: } else {
74: copyCursor.current().setState(INSIDE_LINE_COMMENT);
75: copyCursor.next();
76: return INSIDE_LINE_COMMENT;
77: }
78: }
79: }
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