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comparison dwtx/jface/text/rules/Token.d @ 129:eb30df5ca28b

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Added JFace Text sources
author Frank Benoit <benoit@tionex.de>
date Sat, 23 Aug 2008 19:10:48 +0200
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128:8df1d4193877 129:eb30df5ca28b
1 /*******************************************************************************
2 * Copyright (c) 2000, 2006 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13
14 module dwtx.jface.text.rules.Token;
15
16 import dwt.dwthelper.utils;
17
18 import dwtx.core.runtime.Assert;
19
20
21 /**
22 * Standard implementation of <code>IToken</code>.
23 */
24 public class Token : IToken {
25
26 /** Internal token type: Undefined */
27 private static final int T_UNDEFINED= 0;
28 /** Internal token type: EOF */
29 private static final int T_EOF= 1;
30 /** Internal token type: Whitespace */
31 private static final int T_WHITESPACE= 2;
32 /** Internal token type: Others */
33 private static final int T_OTHER= 3;
34
35
36 /**
37 * Standard token: Undefined.
38 */
39 public static final IToken UNDEFINED= new Token(T_UNDEFINED);
40 /**
41 * Standard token: End Of File.
42 */
43 public static final IToken EOF= new Token(T_EOF);
44 /**
45 * Standard token: Whitespace.
46 */
47 public static final IToken WHITESPACE= new Token(T_WHITESPACE);
48
49 /**
50 * Standard token: Neither {@link #UNDEFINED}, {@link #WHITESPACE}, nor {@link #EOF}.
51 * @deprecated will be removed
52 */
53 public static final IToken OTHER= new Token(T_OTHER);
54
55 /** The type of this token */
56 private int fType;
57 /** The data associated with this token */
58 private Object fData;
59
60 /**
61 * Creates a new token according to the given specification which does not
62 * have any data attached to it.
63 *
64 * @param type the type of the token
65 * @since 2.0
66 */
67 private Token(int type) {
68 fType= type;
69 fData= null;
70 }
71
72 /**
73 * Creates a new token which represents neither undefined, whitespace, nor EOF.
74 * The newly created token has the given data attached to it.
75 *
76 * @param data the data attached to the newly created token
77 */
78 public Token(Object data) {
79 fType= T_OTHER;
80 fData= data;
81 }
82
83 /**
84 * Re-initializes the data of this token. The token may not represent
85 * undefined, whitespace, or EOF.
86 *
87 * @param data to be attached to the token
88 * @since 2.0
89 */
90 public void setData(Object data) {
91 Assert.isTrue(isOther());
92 fData= data;
93 }
94
95 /*
96 * @see IToken#getData()
97 */
98 public Object getData() {
99 return fData;
100 }
101
102 /*
103 * @see IToken#isOther()
104 */
105 public bool isOther() {
106 return (fType is T_OTHER);
107 }
108
109 /*
110 * @see IToken#isEOF()
111 */
112 public bool isEOF() {
113 return (fType is T_EOF);
114 }
115
116 /*
117 * @see IToken#isWhitespace()
118 */
119 public bool isWhitespace() {
120 return (fType is T_WHITESPACE);
121 }
122
123 /*
124 * @see IToken#isUndefined()
125 */
126 public bool isUndefined() {
127 return (fType is T_UNDEFINED);
128 }
129 }