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Java > Open Source Codes > org > netbeans > modules > languages > lexer > InputBridge


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.languages.lexer;
21
22 import org.netbeans.api.languages.CharInput;
23 import org.netbeans.modules.languages.parser.Pattern;
24 import org.netbeans.spi.lexer.LexerInput;
25
26
27 class InputBridge extends CharInput {
28
29     private LexerInput input;
30     private int index = 0;
31     private Pattern start;
32     private Pattern end;
33
34     
35     InputBridge (LexerInput input) {
36         this.input = input;
37     }
38
39     public char read () {
40         index++;
41         return (char) input.read ();
42     }
43
44     public void setIndex (int index) {
45         while (this.index < index)
46             read ();
47         input.backup (this.index - index);
48         this.index = index;
49     }
50
51     public int getIndex () {
52         return index;
53     }
54
55     public char next () {
56         char ch = (char) input.read ();
57         input.backup (1);
58         return ch;
59     }
60
61     public boolean eof () {
62         return next () == (char) input.EOF;
63     }
64
65     public String JavaDoc getString (int from, int to) {
66         return input.readText ().toString ();
67     }
68
69     public String JavaDoc toString () {
70         return input.readText ().toString ();
71     }
72 }
73
74
75
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