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
27: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28: *
29: * This software is Open Source Initiative approved Open Source Software.
30: * Open Source Initative Approved is a trademark of the Open Source Initiative.
31: *
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33: * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/
34: *
35: * END_COPYRIGHT_BLOCK*/
36:
37: package edu.rice.cs.drjava.model.definitions.reducedmodel;
38:
39: /**
40: * Shadowing state that corresponds to being between single quotes.
41: * @version $Id: InsideSingleQuote.java 4255 2007-08-28 19:17:37Z mgricken $
42: */
43: public class InsideSingleQuote extends ReducedModelState {
44: /**
45: * Singleton instance.
46: */
47: public static final InsideSingleQuote ONLY = new InsideSingleQuote();
48:
49: /**
50: * Singleton constructor.
51: */
52: private InsideSingleQuote() {
53: }
54:
55: /**
56: * Walk function for when inside single quotes.
57: * <ol>
58: * <li> If we've reached the end of the list, return.
59: * <li> If we find //, /* or * /, split them into two separate braces.
60: * The cursor will be on the first of the two new braces.
61: * <li> If current brace = \n or ', mark current brace FREE, next(), and
62: * go to updateFree.
63: * Else, mark current brace as INSIDE_SINGLE_QUOTE, go to next brace, recur.
64: * </ol>
65: */
66: ReducedModelState update(TokenList.Iterator copyCursor) {
67: if (copyCursor.atEnd()) {
68: return STUTTER;
69: }
70: copyCursor._splitCurrentIfCommentBlock(true, false);
71: _combineCurrentAndNextIfFind("", "", copyCursor);
72: _combineCurrentAndNextIfEscape(copyCursor);
73:
74: String type = copyCursor.current().getType();
75:
76: if (type.equals("\n")) {
77: copyCursor.current().setState(FREE);
78: copyCursor.next();
79: return FREE;
80: } else if (type.equals("\'")) {
81: // make sure this is a CLOSE quote
82: if (copyCursor.current().isOpen()) {
83: copyCursor.current().flip();
84: }
85:
86: copyCursor.current().setState(FREE);
87: copyCursor.next();
88: return FREE;
89: } else {
90: copyCursor.current().setState(INSIDE_SINGLE_QUOTE);
91: copyCursor.next();
92: return INSIDE_SINGLE_QUOTE;
93: }
94: }
95: }
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