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