1 /*
 2  * Copyright (c) 2001, 2024, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package java.lang.reflect;
27 
28 import jdk.internal.access.JavaLangReflectAccess;
29 import jdk.internal.reflect.ConstructorAccessor;
30 
31 import java.util.Optional;
32 import java.util.function.Function;
33 
34 /** Package-private class implementing the
35     jdk.internal.access.JavaLangReflectAccess interface, allowing the java.lang
36     package to instantiate objects in this package. */
37 final class ReflectAccess implements JavaLangReflectAccess {
38     public <T> Constructor<T> newConstructorWithAccessor(Constructor<T> original, ConstructorAccessor accessor) {
39         return original.newWithAccessor(accessor);
40     }
41 
42     public byte[] getExecutableTypeAnnotationBytes(Executable ex) {
43         return ex.getTypeAnnotationBytes();
44     }
45 
46     public Class<?>[] getExecutableSharedParameterTypes(Executable ex) {
47         return ex.getSharedParameterTypes();
48     }
49 
50     public Class<?>[] getExecutableSharedExceptionTypes(Executable ex) {
51         return ex.getSharedExceptionTypes();
52     }
53 
54     //
55     // Copying routines, needed to quickly fabricate new Field,
56     // Method, and Constructor objects from templates
57     //
58     public Method      copyMethod(Method arg) {
59         return arg.copy();
60     }
61 
62     public Field       copyField(Field arg) {
63         return arg.copy();
64     }
65 
66     public <T> Constructor<T> copyConstructor(Constructor<T> arg) {
67         return arg.copy();
68     }
69 
70     @SuppressWarnings("unchecked")
71     public <T extends AccessibleObject> T getRoot(T obj) {
72         return (T) obj.getRoot();
73     }
74 
75     public boolean isTrustedFinalField(Field f) {
76         return f.isTrustedFinal();
77     }
78 
79     public <T> T newInstance(Constructor<T> ctor, Object[] args, Class<?> caller)
80         throws IllegalAccessException, InstantiationException, InvocationTargetException
81     {
82         return ctor.newInstanceWithCaller(args, true, caller);
83     }
84 
85     @Override
86     public Optional<?> setCodeModelIfNeeded(Method method, Function<Method, Optional<?>> modelFactory) {
87         return method.setCodeModelIfNeeded(modelFactory);
88     }
89 }