1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.objectweb.asm.util;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
/**
* An {@link AnnotationVisitor} that checks that its methods are properly used.
*
* @author Eric Bruneton
*/
public class CheckAnnotationAdapter extends AnnotationVisitor {
/**
* Whether the values of the visited annotation are named. AnnotationVisitor instances used for
* annotation default and annotation arrays use unnamed values.
*/
private final boolean useNamedValue;
/** Whether the {@link #visitEnd} method has been called. */
private boolean visitEndCalled;
public CheckAnnotationAdapter(final AnnotationVisitor annotationVisitor) {
this(annotationVisitor, true);
}
CheckAnnotationAdapter(final AnnotationVisitor annotationVisitor, final boolean useNamedValues) {
super(/* latest api = */ Opcodes.ASM9, annotationVisitor);
this.useNamedValue = useNamedValues;
}
@Override
public void visit(final String name, final Object value) {
checkVisitEndNotCalled();
checkName(name);
if (!(value instanceof Byte
|| value instanceof Boolean
|| value instanceof Character
|| value instanceof Short
|| value instanceof Integer
|| value instanceof Long
|| value instanceof Float
|| value instanceof Double
|| value instanceof String
|| value instanceof Type
|| value instanceof byte[]
|| value instanceof boolean[]
|| value instanceof char[]
|| value instanceof short[]
|| value instanceof int[]
|| value instanceof long[]
|| value instanceof float[]
|| value instanceof double[])) {
throw new IllegalArgumentException("Invalid annotation value");
}
if (value instanceof Type && ((Type) value).getSort() == Type.METHOD) {
throw new IllegalArgumentException("Invalid annotation value");
}
super.visit(name, value);
}
@Override
public void visitEnum(final String name, final String descriptor, final String value) {
checkVisitEndNotCalled();
checkName(name);
// Annotations can only appear in V1_5 or more classes.
CheckMethodAdapter.checkDescriptor(Opcodes.V1_5, descriptor, false);
if (value == null) {
throw new IllegalArgumentException("Invalid enum value");
}
super.visitEnum(name, descriptor, value);
}
@Override
public AnnotationVisitor visitAnnotation(final String name, final String descriptor) {
checkVisitEndNotCalled();
checkName(name);
// Annotations can only appear in V1_5 or more classes.
CheckMethodAdapter.checkDescriptor(Opcodes.V1_5, descriptor, false);
return new CheckAnnotationAdapter(super.visitAnnotation(name, descriptor));
}
@Override
public AnnotationVisitor visitArray(final String name) {
checkVisitEndNotCalled();
checkName(name);
return new CheckAnnotationAdapter(super.visitArray(name), false);
}
@Override
public void visitEnd() {
checkVisitEndNotCalled();
visitEndCalled = true;
super.visitEnd();
}
private void checkName(final String name) {
if (useNamedValue && name == null) {
throw new IllegalArgumentException("Annotation value name must not be null");
}
}
private void checkVisitEndNotCalled() {
if (visitEndCalled) {
throw new IllegalStateException("Cannot call a visit method after visitEnd has been called");
}
}
}
|
