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,
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24: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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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 double-quoted string.
41: * @version $Id: InsideDoubleQuote.java 4255 2007-08-28 19:17:37Z mgricken $
42: */
43: public class InsideDoubleQuote extends ReducedModelState {
44: public static final InsideDoubleQuote ONLY = new InsideDoubleQuote();
45:
46: private InsideDoubleQuote() {
47: }
48:
49: /**
50: * Walk function for when inside a quoted string.
51: * Self-recursive and mutually recursive with other walk functions.
52: * <ol>
53: * <li> If we've reached the end of the list, return.
54: * <li> If we find //, /* or * /, split them into two separate braces.
55: * The cursor will be on the first of the two new braces.
56: * <li> If current brace = \n or ", mark current brace FREE, next(), and
57: * go to updateFree.
58: * Else, mark current brace as INSIDE_DOUBLE_QUOTE, go to next brace, recur.
59: * </ol>
60: */
61: ReducedModelState update(TokenList.Iterator copyCursor) {
62: if (copyCursor.atEnd()) {
63: return STUTTER;
64: }
65: copyCursor._splitCurrentIfCommentBlock(true, false);
66: _combineCurrentAndNextIfFind("", "", copyCursor);
67: _combineCurrentAndNextIfEscape(copyCursor);
68: String type = copyCursor.current().getType();
69:
70: if (type.equals("\n")) {
71: copyCursor.current().setState(FREE);
72: copyCursor.next();
73: return FREE;
74: } else if (type.equals("\"")) {
75: // make sure this is a CLOSE quote
76: if (copyCursor.current().isOpen())
77: copyCursor.current().flip();
78:
79: copyCursor.current().setState(FREE);
80: copyCursor.next();
81: return FREE;
82: } else {
83: copyCursor.current().setState(INSIDE_DOUBLE_QUOTE);
84: copyCursor.next();
85: return INSIDE_DOUBLE_QUOTE;
86: }
87: }
88: }
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