KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > netbeans > lib > lexer > batch > CopyTextTokenList


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 1997-2007 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.lib.lexer.batch;
21
22 import java.io.Reader JavaDoc;
23 import java.util.Set JavaDoc;
24 import org.netbeans.api.lexer.Language;
25 import org.netbeans.lib.lexer.LexerInputOperation;
26 import org.netbeans.api.lexer.InputAttributes;
27 import org.netbeans.api.lexer.TokenId;
28 import org.netbeans.lib.lexer.TokenHierarchyOperation;
29
30
31 /**
32  * Token list for situation when the input text must be copied.
33  * It works together with SkimTokenList instances that act
34  * as a filter over this token list.
35  *
36  * @author Miloslav Metelka
37  * @version 1.00
38  */
39
40 public final class CopyTextTokenList<T extends TokenId> extends BatchTokenList<T> {
41     
42     /** Either reader or char sequence */
43     private final Object JavaDoc input;
44     
45     public CopyTextTokenList(TokenHierarchyOperation<?,T> tokenHierarchyOperation, Reader JavaDoc inputReader,
46     Language<T> language, Set JavaDoc<T> skipTokenIds, InputAttributes inputAttributes) {
47         super(tokenHierarchyOperation, language, skipTokenIds, inputAttributes);
48         this.input = inputReader;
49     }
50     
51     public CopyTextTokenList(TokenHierarchyOperation<?,T> tokenHierarchyOperation, CharSequence JavaDoc inputText,
52     Language<T> language, Set JavaDoc<T> skipTokenIds, InputAttributes inputAttributes) {
53         super(tokenHierarchyOperation, language, skipTokenIds, inputAttributes);
54         this.input = inputText;
55     }
56     
57     public int childTokenOffset(int rawOffset) {
58         // Cluster should be used so this method should never be called
59 throwShouldNeverBeCalled();
60         return 0; // never reached
61 }
62
63     public char childTokenCharAt(int rawOffset, int index) {
64         // Cluster should be used so this method should never be called
65 throwShouldNeverBeCalled();
66         return ' '; // never reached
67 }
68     
69     private void throwShouldNeverBeCalled() {
70         throw new IllegalStateException JavaDoc("Should never be called"); // NOI18N
71 }
72
73     protected LexerInputOperation<T> createLexerInputOperation() {
74         return (input instanceof Reader JavaDoc)
75             ? new SkimLexerInputOperation<T>(this, (Reader JavaDoc)input)
76             : new SkimLexerInputOperation<T>(this, (CharSequence JavaDoc)input);
77     }
78
79 }
80
Popular Tags