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1
30 package org.objectweb.asm.util;
31
32 import org.objectweb.asm.AnnotationVisitor;
33 import org.objectweb.asm.Type;
34
35
40 public class CheckAnnotationAdapter implements AnnotationVisitor {
41
42 private AnnotationVisitor av;
43
44 private boolean named;
45
46 private boolean end;
47
48 public CheckAnnotationAdapter(final AnnotationVisitor av) {
49 this(av, true);
50 }
51
52 CheckAnnotationAdapter(final AnnotationVisitor av, final boolean named) {
53 this.av = av;
54 this.named = named;
55 }
56
57 public void visit(final String  name, final Object value) {
58 checkEnd();
59 checkName(name);
60 if (!(value instanceof Byte || value instanceof Boolean
61 || value instanceof Character || value instanceof Short
62 || value instanceof Integer || value instanceof Long
63 || value instanceof Float || value instanceof Double
64 || value instanceof String || value instanceof Type
65 || value instanceof byte[] || value instanceof boolean[]
66 || value instanceof char[] || value instanceof short[]
67 || value instanceof int[] || value instanceof long[]
68 || value instanceof float[] || value instanceof double[]))
69 {
70 throw new IllegalArgumentException ("Invalid annotation value");
71 }
72 if (av != null) {
73 av.visit(name, value);
74 }
75 }
76
77 public void visitEnum(
78 final String name,
79 final String desc,
80 final String value)
81 {
82 checkEnd();
83 checkName(name);
84 CheckMethodAdapter.checkDesc(desc, false);
85 if (value == null) {
86 throw new IllegalArgumentException ("Invalid enum value");
87 }
88 if (av != null) {
89 av.visitEnum(name, desc, value);
90 }
91 }
92
93 public AnnotationVisitor visitAnnotation(
94 final String name,
95 final String desc)
96 {
97 checkEnd();
98 checkName(name);
99 CheckMethodAdapter.checkDesc(desc, false);
100 return new CheckAnnotationAdapter(av == null
101 ? null
102 : av.visitAnnotation(name, desc));
103 }
104
105 public AnnotationVisitor visitArray(final String name) {
106 checkEnd();
107 checkName(name);
108 return new CheckAnnotationAdapter(av == null
109 ? null
110 : av.visitArray(name), false);
111 }
112
113 public void visitEnd() {
114 checkEnd();
115 end = true;
116 if (av != null) {
117 av.visitEnd();
118 }
119 }
120
121 private void checkEnd() {
122 if (end) {
123 throw new IllegalStateException ("Cannot call a visit method after visitEnd has been called");
124 }
125 }
126
127 private void checkName(final String name) {
128 if (named && name == null) {
129 throw new IllegalArgumentException ("Annotation value name must not be null");
130 }
131 }
132 }
133 |
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