KickJava   Java API By Example, From Geeks To Geeks.

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


1 /*BEGIN_COPYRIGHT_BLOCK
2  *
3  * This file is part of DrJava. Download the current version of this project from http://www.drjava.org/
4  * or http://sourceforge.net/projects/drjava/
5  *
6  * DrJava Open Source License
7  *
8  * Copyright (C) 2001-2006 JavaPLT group at Rice University (javaplt@rice.edu). All rights reserved.
9  *
10  * Developed by: Java Programming Languages Team, Rice University, http://www.cs.rice.edu/~javaplt/
11  *
12  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
13  * documentation files (the "Software"), to deal with the Software without restriction, including without limitation
14  * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
15  * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
16  *
17  * - Redistributions of source code must retain the above copyright notice, this list of conditions and the
18  * following disclaimers.
19  * - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
20  * following disclaimers in the documentation and/or other materials provided with the distribution.
21  * - Neither the names of DrJava, the JavaPLT, Rice University, nor the names of its contributors may be used to
22  * endorse or promote products derived from this Software without specific prior written permission.
23  * - Products derived from this software may not be called "DrJava" nor use the term "DrJava" as part of their
24  * names without prior written permission from the JavaPLT group. For permission, write to javaplt@rice.edu.
25  *
26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
27  * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
28  * CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
29  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
30  * WITH THE SOFTWARE.
31  *
32  *END_COPYRIGHT_BLOCK*/
33
34 package edu.rice.cs.drjava.model.definitions.indent;
35
36 import javax.swing.text.BadLocationException JavaDoc;
37
38 import edu.rice.cs.drjava.model.AbstractDJDocument;
39
40 /**
41  * This class checks the previous statement for the given character
42  * @version $Id: QuestionExistsCharInPrevStmt.java 3901 2006-06-30 05:28:11Z rcartwright $
43  */
44 public class QuestionExistsCharInPrevStmt extends IndentRuleQuestion {
45   
46   private char _lookFor;
47   
48   public QuestionExistsCharInPrevStmt(char lookFor, IndentRule yesRule, IndentRule noRule) {
49     super(yesRule, noRule);
50     _lookFor = lookFor;
51   }
52   
53   /**
54    * Searches through the previous statement to find if it has the current character not in a
55    * comment and not in a string
56    */
57   boolean applyRule(AbstractDJDocument doc, int reason) {
58     //Find the end of the previous line
59 int endPreviousStatement;
60     try {
61       endPreviousStatement =
62         doc.findPrevDelimiter(doc.getCurrentLocation(), new char[] {';','}','{'});
63     } catch (BadLocationException JavaDoc ble) {
64       //default to reporting the char was not found in the case of a BadLocationeEception
65 return false;
66     }
67     
68     // if this is the first line, we'll get an error indicator and just return false
69 if (endPreviousStatement == AbstractDJDocument.ERROR_INDEX) {
70       return false;
71     }
72     
73       //Now find the if the character we want exists on that line
74 return doc.findCharInStmtBeforePos(_lookFor, endPreviousStatement);
75   }
76 }
Popular Tags