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Java > Open Source Codes > edu > rice > cs > drjava > model > definitions > indent > QuestionBraceIsParenOrBracket


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33
34 package edu.rice.cs.drjava.model.definitions.indent;
35
36 import edu.rice.cs.drjava.model.AbstractDJDocument;
37 import edu.rice.cs.drjava.model.definitions.reducedmodel.*;
38
39 /** Determines whether or not the last block or expression list opened previous to the start of the current line was opened
40   * by one of the characters '(' or '['. This questions corresponds to rule 11 in our decision tree.
41   * @version $Id: QuestionBraceIsParenOrBracket.java 3900 2006-06-29 13:16:38Z rcartwright $
42   */
43 public class QuestionBraceIsParenOrBracket extends IndentRuleQuestion {
44   /**
45    * @param yesRule The decision subtree for the case that this rule applies
46    * in the current context.
47    * @param noRule The decision subtree for the case that this rule does not
48    * apply in the current context.
49    */
50   public QuestionBraceIsParenOrBracket(IndentRule yesRule, IndentRule noRule) {
51     super(yesRule, noRule);
52   }
53   
54   /**
55    * @param doc The AbstractDJDocument containing the current line.
56    * @return True iff the last block or expression list opened previous
57    * to the start of the current line was opened by one of the characters
58    * '(' or '['.
59    */
60   boolean applyRule(AbstractDJDocument doc, int reason) {
61     // PRE: We are not inside a multiline comment.
62
63     IndentInfo info = doc.getIndentInformation();
64
65     // We are using fields on IndentInfo which look
66 // at the start of the line, not the current position!
67
68     return info.braceType.equals(IndentInfo.openParen)
69         || info.braceType.equals(IndentInfo.openBracket);
70   }
71 }
72
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