1 /*
2 * Copyright (c) 2021, 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 jdk.internal.reflect;
27
28 import java.lang.invoke.MethodHandle;
29 import java.lang.invoke.MethodType;
30 import java.lang.reflect.Field;
31 import java.lang.reflect.Modifier;
32
33 class MethodHandleBooleanFieldAccessorImpl extends MethodHandleFieldAccessorImpl {
34 static FieldAccessorImpl fieldAccessor(Field field, MethodHandle getter, MethodHandle setter, boolean isReadOnly) {
35 boolean isStatic = Modifier.isStatic(field.getModifiers());
36 if (isStatic) {
37 getter = getter.asType(MethodType.methodType(boolean.class));
38 if (setter != null) {
39 setter = setter.asType(MethodType.methodType(void.class, boolean.class));
40 }
41 } else {
42 getter = getter.asType(MethodType.methodType(boolean.class, Object.class));
43 if (setter != null) {
44 setter = setter.asType(MethodType.methodType(void.class, Object.class, boolean.class));
45 }
46 }
47 return new MethodHandleBooleanFieldAccessorImpl(field, getter, setter, isReadOnly, isStatic);
48 }
49
50 MethodHandleBooleanFieldAccessorImpl(Field field, MethodHandle getter, MethodHandle setter, boolean isReadOnly, boolean isStatic) {
51 super(field, getter, setter, isReadOnly, isStatic);
52 }
53
54 public Object get(Object obj) throws IllegalArgumentException {
55 return Boolean.valueOf(getBoolean(obj));
56 }
57
58 public boolean getBoolean(Object obj) throws IllegalArgumentException {
59 try {
60 if (isStatic()) {
61 return (boolean) getter.invokeExact();
62 } else {
63 return (boolean) getter.invokeExact(obj);
64 }
65 } catch (IllegalArgumentException|NullPointerException e) {
66 throw e;
67 } catch (ClassCastException e) {
68 throw newGetIllegalArgumentException(obj);
69 } catch (Throwable e) {
70 throw new InternalError(e);
71 }
72 }
73
74 public byte getByte(Object obj) throws IllegalArgumentException {
75 throw newGetByteIllegalArgumentException();
76 }
77
78 public char getChar(Object obj) throws IllegalArgumentException {
79 throw newGetCharIllegalArgumentException();
80 }
81
82 public short getShort(Object obj) throws IllegalArgumentException {
83 throw newGetShortIllegalArgumentException();
84 }
85
86 public int getInt(Object obj) throws IllegalArgumentException {
87 throw newGetIntIllegalArgumentException();
88 }
89
90 public long getLong(Object obj) throws IllegalArgumentException {
91 throw newGetLongIllegalArgumentException();
92 }
93
94 public float getFloat(Object obj) throws IllegalArgumentException {
95 throw newGetFloatIllegalArgumentException();
96 }
97
98 public double getDouble(Object obj) throws IllegalArgumentException {
99 throw newGetDoubleIllegalArgumentException();
100 }
101
102 public void set(Object obj, Object value)
103 throws IllegalArgumentException, IllegalAccessException
104 {
105 ensureObj(obj);
106 if (isReadOnly()) {
107 throwFinalFieldIllegalAccessException(value);
108 }
109
110 if (value == null) {
111 throwSetIllegalArgumentException(value);
112 }
113
114 if (value instanceof Boolean b) {
115 setBoolean(obj, b.booleanValue());
116 } else {
117 throwSetIllegalArgumentException(value);
118 }
119 }
120
121 public void setBoolean(Object obj, boolean z)
122 throws IllegalArgumentException, IllegalAccessException
123 {
124 if (isReadOnly()) {
125 ensureObj(obj); // throw NPE if obj is null on instance field
126 throwFinalFieldIllegalAccessException(z);
127 }
128 try {
129 if (isStatic()) {
130 setter.invokeExact(z);
131 } else {
132 setter.invokeExact(obj, z);
133 }
134 } catch (IllegalArgumentException|NullPointerException e) {
135 throw e;
136 } catch (ClassCastException e) {
137 // receiver is of invalid type
138 throw newSetIllegalArgumentException(obj);
139 } catch (Throwable e) {
140 throw new InternalError(e);
141 }
142 }
143
144 public void setByte(Object obj, byte b)
145 throws IllegalArgumentException, IllegalAccessException
146 {
147 throwSetIllegalArgumentException(b);
148 }
149
150 public void setChar(Object obj, char c)
151 throws IllegalArgumentException, IllegalAccessException
152 {
153 throwSetIllegalArgumentException(c);
154 }
155
156 public void setShort(Object obj, short s)
157 throws IllegalArgumentException, IllegalAccessException
158 {
159 throwSetIllegalArgumentException(s);
160 }
161
162 public void setInt(Object obj, int i)
163 throws IllegalArgumentException, IllegalAccessException
164 {
165 throwSetIllegalArgumentException(i);
166 }
167
168 public void setLong(Object obj, long l)
169 throws IllegalArgumentException, IllegalAccessException
170 {
171 throwSetIllegalArgumentException(l);
172 }
173
174 public void setFloat(Object obj, float f)
175 throws IllegalArgumentException, IllegalAccessException
176 {
177 throwSetIllegalArgumentException(f);
178 }
179
180 public void setDouble(Object obj, double d)
181 throws IllegalArgumentException, IllegalAccessException
182 {
183 throwSetIllegalArgumentException(d);
184 }
185 }