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866e5b51 | 1 | /******************************************************************************* |
11252342 | 2 | * Copyright (c) 2011, 2013 Ericsson, Ecole Polytechnique de Montreal and others |
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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 | ||
3b11ddc7 | 15 | import java.math.BigInteger; |
72dbc4ac | 16 | |
a4fa4e36 MK |
17 | import org.eclipse.jdt.annotation.NonNull; |
18 | import org.eclipse.linuxtools.ctf.core.event.scope.IDefinitionScope; | |
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19 | |
20 | /** | |
d37aaa7f | 21 | * A CTF integer definition. |
dc209be3 | 22 | * |
3b11ddc7 JCK |
23 | * The definition of a integer basic data type. It will take the data from a |
24 | * trace and store it (and make it fit) as a long. | |
d37aaa7f | 25 | * |
d37aaa7f FC |
26 | * @version 1.0 |
27 | * @author Matthew Khouzam | |
28 | * @author Simon Marchi | |
866e5b51 | 29 | */ |
a4fa4e36 | 30 | public final class IntegerDefinition extends SimpleDatatypeDefinition { |
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31 | |
32 | // ------------------------------------------------------------------------ | |
33 | // Attributes | |
34 | // ------------------------------------------------------------------------ | |
35 | ||
a4fa4e36 | 36 | private final long fValue; |
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37 | |
38 | // ------------------------------------------------------------------------ | |
a511da0d | 39 | // Constructors |
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40 | // ------------------------------------------------------------------------ |
41 | ||
9ac2eb62 MK |
42 | /** |
43 | * Constructor | |
3b11ddc7 JCK |
44 | * |
45 | * @param declaration | |
46 | * the parent declaration | |
47 | * @param definitionScope | |
48 | * the parent scope | |
49 | * @param fieldName | |
50 | * the field name | |
a4fa4e36 MK |
51 | * @param value |
52 | * integer value | |
53 | * @since 3.0 | |
9ac2eb62 | 54 | */ |
a4fa4e36 MK |
55 | public IntegerDefinition(@NonNull IntegerDeclaration declaration, |
56 | IDefinitionScope definitionScope, @NonNull String fieldName, long value) { | |
57 | super(declaration, definitionScope, fieldName); | |
58 | fValue = value; | |
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59 | } |
60 | ||
61 | // ------------------------------------------------------------------------ | |
a511da0d | 62 | // Getters/Setters/Predicates |
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63 | // ------------------------------------------------------------------------ |
64 | ||
9ac2eb62 MK |
65 | /** |
66 | * Gets the value of the integer | |
3b11ddc7 | 67 | * |
9ac2eb62 MK |
68 | * @return the value of the integer (in long) |
69 | */ | |
866e5b51 | 70 | public long getValue() { |
a4fa4e36 | 71 | return fValue; |
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72 | } |
73 | ||
9ac2eb62 | 74 | @Override |
866e5b51 | 75 | public IntegerDeclaration getDeclaration() { |
a4fa4e36 | 76 | return (IntegerDeclaration) super.getDeclaration(); |
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77 | } |
78 | ||
79 | // ------------------------------------------------------------------------ | |
80 | // Operations | |
81 | // ------------------------------------------------------------------------ | |
82 | ||
21fb02fa MK |
83 | @Override |
84 | public Long getIntegerValue() { | |
85 | return getValue(); | |
86 | } | |
87 | ||
21fb02fa MK |
88 | @Override |
89 | public String getStringValue() { | |
90 | return this.toString(); | |
91 | } | |
92 | ||
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93 | @Override |
94 | public String toString() { | |
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95 | if (getDeclaration().isCharacter()) { |
96 | char c = (char) fValue; | |
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97 | return Character.toString(c); |
98 | } | |
a4fa4e36 | 99 | return formatNumber(fValue, getDeclaration().getBase(), getDeclaration().isSigned()); |
3b11ddc7 JCK |
100 | } |
101 | ||
102 | /** | |
103 | * Print a numeric value as a string in a given base | |
104 | * | |
105 | * @param value | |
106 | * The value to print as string | |
107 | * @param base | |
108 | * The base for this value | |
109 | * @param signed | |
110 | * Is the value signed or not | |
111 | * @return formatted number string | |
112 | * @since 3.0 | |
113 | */ | |
114 | public static final String formatNumber(long value, int base, boolean signed) { | |
115 | String s; | |
116 | /* Format the number correctly according to the integer's base */ | |
117 | switch (base) { | |
118 | case 2: | |
119 | s = "0b" + Long.toBinaryString(value); //$NON-NLS-1$ | |
120 | break; | |
121 | case 8: | |
122 | s = "0" + Long.toOctalString(value); //$NON-NLS-1$ | |
123 | break; | |
124 | case 16: | |
125 | s = "0x" + Long.toHexString(value); //$NON-NLS-1$ | |
126 | break; | |
127 | case 10: | |
128 | default: | |
129 | /* For non-standard base, we'll just print it as a decimal number */ | |
130 | if (!signed && value < 0) { | |
131 | /* | |
132 | * Since there are no 'unsigned long', handle this case with | |
133 | * BigInteger | |
134 | */ | |
135 | BigInteger bigInteger = BigInteger.valueOf(value); | |
136 | /* | |
137 | * we add 2^64 to the negative number to get the real unsigned | |
138 | * value | |
139 | */ | |
140 | bigInteger = bigInteger.add(BigInteger.valueOf(1).shiftLeft(64)); | |
141 | s = bigInteger.toString(); | |
142 | } else { | |
143 | s = Long.toString(value); | |
144 | } | |
145 | break; | |
146 | } | |
147 | return s; | |
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148 | } |
149 | } |