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Java > Open Source Codes > org > jruby > lexer > yacc > SourcePositionFactory


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2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
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5  * License Version 1.0 (the "License"); you may not use this file
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14  * Copyright (C) 2005 Thomas E Enebo <enebo@acm.org>
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28  package org.jruby.lexer.yacc;
29
30 public class SourcePositionFactory implements ISourcePositionFactory {
31     // Position of last token returned.
32 private SourcePosition lastPosition = new SourcePosition();
33     private LexerSource source;
34     
35     public SourcePositionFactory(LexerSource source) {
36         this.source = source;
37     }
38
39     public ISourcePosition getPosition(ISourcePosition startPosition, boolean inclusive) {
40
41         if (startPosition == null) {
42             lastPosition = new SourcePosition(source.getFilename(), lastPosition.getEndLine(),
43                     source.getLine(), lastPosition.getEndOffset(), source.getOffset());
44         } else if (inclusive) {
45             lastPosition = new SourcePosition(source.getFilename(), startPosition.getStartLine(),
46                     source.getLine(), startPosition.getStartOffset(), source.getOffset());
47         } else {
48             lastPosition = new SourcePosition(source.getFilename(), startPosition.getEndLine(),
49                     source.getLine(), startPosition.getEndOffset(), source.getOffset());
50         }
51
52         return lastPosition;
53     }
54     
55     public ISourcePosition getDummyPosition() {
56         return new SourcePosition("", -1, -1, 0, 0);
57     }
58 }
59
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