1/*
2 * Copyright 2015, Google Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32package org.jf.dexlib2;
33
34public class VersionMap {
35    public static final int NO_VERSION = -1;
36
37    public static int mapArtVersionToApi(int artVersion) {
38        // NOTE: Art version 87 and api level 26 do not correspond to any
39        // particular android release and represent the current (as of
40        // October 2016) state of aosp/master.
41        if (artVersion >= 87) {
42            return 26;
43        }
44        if (artVersion >= 79) {
45            return 24;
46        }
47        if (artVersion >= 64) {
48            return 23;
49        }
50        if (artVersion >= 45) {
51            return 22;
52        }
53        if (artVersion >= 39) {
54            return 21;
55        }
56        return 19;
57    }
58
59    public static int mapApiToArtVersion(int api) {
60        switch (api) {
61            case 19:
62            case 20:
63                return 7;
64            case 21:
65                return 39;
66            case 22:
67                return 45;
68            case 23:
69                return 64;
70            case 24:
71            case 25:
72                return 79;
73        }
74
75        // NOTE: Art version 87 and api level 26 do not correspond to any
76        // particular android release and represent the current (as of
77        // October 2016) state of aosp/master.
78        if (api > 25) {
79            return 87;
80        }
81        return NO_VERSION;
82    }
83}
84