1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21package proguard.classfile.instruction;
22
23import proguard.classfile.ClassConstants;
24
25/**
26 * Utility methods for converting between representations of names and
27 * descriptions.
28 *
29 * @author Eric Lafortune
30 */
31public class InstructionUtil
32{
33    /**
34     * Returns the internal type corresponding to the given 'newarray' type.
35     * @param arrayType <code>InstructionConstants.ARRAY_T_BOOLEAN</code>,
36     *                  <code>InstructionConstants.ARRAY_T_BYTE</code>,
37     *                  <code>InstructionConstants.ARRAY_T_CHAR</code>,
38     *                  <code>InstructionConstants.ARRAY_T_SHORT</code>,
39     *                  <code>InstructionConstants.ARRAY_T_INT</code>,
40     *                  <code>InstructionConstants.ARRAY_T_LONG</code>,
41     *                  <code>InstructionConstants.ARRAY_T_FLOAT</code>, or
42     *                  <code>InstructionConstants.ARRAY_T_DOUBLE</code>.
43     * @return <code>ClassConstants.TYPE_BOOLEAN</code>,
44     *         <code>ClassConstants.TYPE_BYTE</code>,
45     *         <code>ClassConstants.TYPE_CHAR</code>,
46     *         <code>ClassConstants.TYPE_SHORT</code>,
47     *         <code>ClassConstants.TYPE_INT</code>,
48     *         <code>ClassConstants.TYPE_LONG</code>,
49     *         <code>ClassConstants.TYPE_FLOAT</code>, or
50     *         <code>ClassConstants.TYPE_DOUBLE</code>.
51     */
52    public static char internalTypeFromArrayType(byte arrayType)
53    {
54        switch (arrayType)
55        {
56            case InstructionConstants.ARRAY_T_BOOLEAN: return ClassConstants.TYPE_BOOLEAN;
57            case InstructionConstants.ARRAY_T_CHAR:    return ClassConstants.TYPE_CHAR;
58            case InstructionConstants.ARRAY_T_FLOAT:   return ClassConstants.TYPE_FLOAT;
59            case InstructionConstants.ARRAY_T_DOUBLE:  return ClassConstants.TYPE_DOUBLE;
60            case InstructionConstants.ARRAY_T_BYTE:    return ClassConstants.TYPE_BYTE;
61            case InstructionConstants.ARRAY_T_SHORT:   return ClassConstants.TYPE_SHORT;
62            case InstructionConstants.ARRAY_T_INT:     return ClassConstants.TYPE_INT;
63            case InstructionConstants.ARRAY_T_LONG:    return ClassConstants.TYPE_LONG;
64            default: throw new IllegalArgumentException("Unknown array type ["+arrayType+"]");
65        }
66    }
67}
68