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


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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 line comment.
38  * @version $Id: InsideLineComment.java 3553 2006-02-20 21:22:09Z rcartwright $
39  */
40 public class InsideLineComment extends ReducedModelState {
41   public static final InsideLineComment ONLY = new InsideLineComment();
42
43   private InsideLineComment() { }
44
45     /**
46   * Walk function for inside line comment.
47   * <ol>
48   * <li> If we've reached the end of the list, return.
49   * <li> If we find //, /* or * /, split them into two separate braces.
50   * The cursor will be on the first of the two new braces.
51   * <li> If current brace = \n, mark current brace FREE, next(), and
52   * go to updateFree.<BR>
53   * Else, mark current brace as LINE_COMMENT, goto next, and recur.
54   * </ol>
55   */
56   ReducedModelState update(TokenList.Iterator copyCursor) {
57     if (copyCursor.atEnd()) return STUTTER;
58     copyCursor._splitCurrentIfCommentBlock(true, false);
59     _combineCurrentAndNextIfFind("","", copyCursor);
60     _combineCurrentAndNextIfEscape(copyCursor);
61
62     String JavaDoc type = copyCursor.current().getType();
63
64     if (type.equals("\n")) {
65       copyCursor.current().setState(FREE);
66       copyCursor.next();
67       return FREE;
68     }
69     else {
70       copyCursor.current().setState(INSIDE_LINE_COMMENT);
71       copyCursor.next();
72       return INSIDE_LINE_COMMENT;
73     }
74   }
75 }
76
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