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1 | /******************************************************************************* |
2 | * Copyright (c) 2011-2012 Ericsson, Ecole Polytechnique de Montreal and others | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are made | |
5 | * available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: Matthew Khouzam - Initial API and implementation | |
10 | * Contributors: Simon Marchi - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.ctf.core.event.types; | |
14 | ||
ce2388e0 | 15 | import org.eclipse.linuxtools.internal.ctf.core.event.io.BitBuffer; |
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16 | |
17 | /** | |
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18 | * A CTF definiton |
19 | * | |
20 | * A definition is like an object of a declaration class. It fills the declaration | |
21 | * with values. <br> | |
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22 | * An example: <br> |
23 | * int i = 0; <br> | |
24 | * <b>int</b> is the declaration.<br> | |
25 | * <b>i</b> is the definition.<br> | |
26 | * <b>0</b> is the value assigned to the definition, not the declaration.<br> | |
27 | * | |
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28 | * @version 1.0 |
29 | * @author Matthew Khouzam | |
30 | * @author Simon Marchi | |
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31 | */ |
32 | public abstract class Definition { | |
33 | ||
34 | // ------------------------------------------------------------------------ | |
35 | // Attributes | |
36 | // ------------------------------------------------------------------------ | |
37 | ||
07002e0a | 38 | /** The name of the field in its container */ |
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39 | protected final String fieldName; |
40 | ||
07002e0a | 41 | /** The complete path of this field */ |
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42 | protected final String path; |
43 | ||
07002e0a | 44 | /** |
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45 | * The definition scope in which this definition is found. |
46 | * | |
47 | * The complete path of a definition is thus the path of the definition | |
48 | * scope DOT the name of the definition (name of the field in its container) | |
49 | */ | |
50 | protected final IDefinitionScope definitionScope; | |
51 | ||
52 | // ------------------------------------------------------------------------ | |
53 | // Constructors | |
54 | // ------------------------------------------------------------------------ | |
55 | ||
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56 | /** |
57 | * Constructor | |
58 | * | |
59 | * @param definitionScope | |
60 | * the definition is in a scope, (normally a struct) what is it? | |
61 | * @param fieldName | |
62 | * the name of the definition. (it is a field in the parent | |
63 | * scope) | |
64 | */ | |
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65 | public Definition(IDefinitionScope definitionScope, String fieldName) { |
66 | this.definitionScope = definitionScope; | |
67 | this.fieldName = fieldName; | |
68 | if (definitionScope != null) { | |
69 | String parentPath = definitionScope.getPath(); | |
70 | if (parentPath.length() > 0) { | |
71 | path = parentPath + "." + fieldName; //$NON-NLS-1$ | |
72 | } else { | |
73 | path = fieldName; | |
74 | } | |
75 | } else { | |
76 | path = fieldName; | |
77 | } | |
78 | ||
79 | /* | |
80 | * System.out.println("[definition] " + this.getClass().getSimpleName() | |
81 | * + " " + path + " created"); | |
82 | */ | |
83 | } | |
84 | ||
85 | // ------------------------------------------------------------------------ | |
86 | // Operations | |
87 | // ------------------------------------------------------------------------ | |
88 | ||
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89 | /** |
90 | * | |
91 | * @return gets the declaration of a datatype | |
92 | * | |
93 | */ | |
94 | public abstract IDeclaration getDeclaration(); | |
95 | ||
96 | /** | |
97 | * Read the definition from a bitbuffer | |
98 | * | |
99 | * @param input | |
100 | * the bitbuffer containing the data to read. | |
101 | */ | |
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102 | public abstract void read(BitBuffer input); |
103 | ||
104 | @Override | |
105 | public String toString() { | |
106 | return path + '[' + Integer.toHexString(hashCode()) + ']'; | |
107 | } | |
108 | } |