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Java > Open Source Codes > edu > rice > cs > drjava > model > definitions > reducedmodel > InsideDoubleQuote


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33
34 package edu.rice.cs.drjava.model.definitions.reducedmodel;
35
36 /**
37  * Shadowing state that corresponds to being inside a double-quoted string.
38  * @version $Id: InsideDoubleQuote.java 3901 2006-06-30 05:28:11Z rcartwright $
39  */
40 public class InsideDoubleQuote extends ReducedModelState {
41   public static final InsideDoubleQuote ONLY = new InsideDoubleQuote();
42   
43   private InsideDoubleQuote() {
44   }
45   
46   /**
47    * Walk function for when inside a quoted string.
48    * Self-recursive and mutually recursive with other walk functions.
49    * <ol>
50    * <li> If we've reached the end of the list, return.
51    * <li> If we find //, /* or * /, split them into two separate braces.
52    * The cursor will be on the first of the two new braces.
53    * <li> If current brace = \n or ", mark current brace FREE, next(), and
54    * go to updateFree.
55    * Else, mark current brace as INSIDE_DOUBLE_QUOTE, go to next brace, recur.
56    * </ol>
57    */
58   ReducedModelState update(TokenList.Iterator copyCursor) {
59     if (copyCursor.atEnd()) {
60       return STUTTER;
61     }
62     copyCursor._splitCurrentIfCommentBlock(true,false);
63     _combineCurrentAndNextIfFind("","", copyCursor);
64     _combineCurrentAndNextIfEscape(copyCursor);
65     String JavaDoc type = copyCursor.current().getType();
66     
67     if (type.equals("\n")) {
68       copyCursor.current().setState(FREE);
69       copyCursor.next();
70       return FREE;
71     }
72     else if (type.equals("\"")) {
73       // make sure this is a CLOSE quote
74 if (copyCursor.current().isOpen())
75         copyCursor.current().flip();
76       
77       copyCursor.current().setState(FREE);
78       copyCursor.next();
79       return FREE;
80     }
81     else {
82       copyCursor.current().setState(INSIDE_DOUBLE_QUOTE);
83       copyCursor.next();
84       return INSIDE_DOUBLE_QUOTE;
85     }
86   }
87 }
88
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