1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package libcore.reflect;
18
19import java.lang.reflect.Array;
20
21/**
22 * Work with a type's internal name like "V" or "Ljava/lang/String;".
23 */
24public final class InternalNames {
25    private InternalNames() {
26    }
27
28    public static Class<?> getClass(ClassLoader classLoader, String internalName) {
29        if (internalName.startsWith("[")) {
30            Class<?> componentClass = getClass(classLoader, internalName.substring(1));
31            return Array.newInstance(componentClass, 0).getClass();
32        } else if (internalName.equals("Z")) {
33            return boolean.class;
34        } else if (internalName.equals("B")) {
35            return byte.class;
36        } else if (internalName.equals("S")) {
37            return short.class;
38        } else if (internalName.equals("I")) {
39            return int.class;
40        } else if (internalName.equals("J")) {
41            return long.class;
42        } else if (internalName.equals("F")) {
43            return float.class;
44        } else if (internalName.equals("D")) {
45            return double.class;
46        } else if (internalName.equals("C")) {
47            return char.class;
48        } else if (internalName.equals("V")) {
49            return void.class;
50        } else {
51            String name = internalName.substring(1, internalName.length() - 1).replace('/', '.');
52            try {
53                return classLoader.loadClass(name);
54            } catch (ClassNotFoundException e) {
55                NoClassDefFoundError error = new NoClassDefFoundError(name);
56                error.initCause(e);
57                throw error;
58            }
59        }
60    }
61
62    public static String getInternalName(Class<?> c) {
63        if (c.isArray()) {
64            return '[' + getInternalName(c.getComponentType());
65        } else if (c == boolean.class) {
66            return "Z";
67        } else if (c == byte.class) {
68            return "B";
69        } else if (c == short.class) {
70            return "S";
71        } else if (c == int.class) {
72            return "I";
73        } else if (c == long.class) {
74            return "J";
75        } else if (c == float.class) {
76            return "F";
77        } else if (c == double.class) {
78            return "D";
79        } else if (c == char.class) {
80            return "C";
81        } else if (c == void.class) {
82            return "V";
83        } else {
84            return 'L' + c.getName().replace('.', '/') + ';';
85        }
86    }
87}
88