1 /*
 2  * Copyright (c) 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.code.type;
27 
28 import java.lang.reflect.code.type.impl.FieldRefImpl;
29 import java.lang.invoke.MethodHandles;
30 import java.lang.invoke.VarHandle;
31 import java.lang.reflect.Field;
32 import java.lang.reflect.code.TypeElement;
33 
34 /**
35  * The symbolic reference to a Java field.
36  */
37 public sealed interface FieldRef permits FieldRefImpl {
38     TypeElement refType();
39 
40     String name();
41 
42     TypeElement type();
43 
44     // Conversions
45 
46     Field resolveToMember(MethodHandles.Lookup l) throws ReflectiveOperationException;
47 
48     VarHandle resolveToHandle(MethodHandles.Lookup l) throws ReflectiveOperationException;
49 
50     // Factories
51 
52     static FieldRef field(Field f) {
53         return field(f.getDeclaringClass(), f.getName(), f.getType());
54     }
55 
56     static FieldRef field(Class<?> refType, String name, Class<?> type) {
57         return field(JavaType.type(refType), name, JavaType.type(type));
58     }
59 
60     static FieldRef field(TypeElement refType, String name, TypeElement type) {
61         return new FieldRefImpl(refType, name, type);
62     }
63 
64     // Copied code in jdk.compiler module throws UOE
65     static FieldRef ofString(String s) {
66 /*__throw new UnsupportedOperationException();__*/        return java.lang.reflect.code.parser.impl.DescParser.parseFieldRef(s);
67     }
68 }