1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.shared.dependency.analyzer.asm;
20
21 import org.objectweb.asm.AnnotationVisitor;
22 import org.objectweb.asm.Opcodes;
23 import org.objectweb.asm.Type;
24
25 /**
26 * Computes the set of classes referenced by visited code.
27 * Inspired by <code>org.objectweb.asm.depend.DependencyVisitor</code> in the ASM dependencies example.
28 *
29 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
30 */
31 public class DefaultAnnotationVisitor extends AnnotationVisitor {
32 private final ResultCollector resultCollector;
33
34 private final String usedByClass;
35
36 /**
37 * <p>Constructor for DefaultAnnotationVisitor.</p>
38 *
39 * @param resultCollector a {@link org.apache.maven.shared.dependency.analyzer.asm.ResultCollector} object.
40 */
41 public DefaultAnnotationVisitor(ResultCollector resultCollector, String usedByClass) {
42 super(Opcodes.ASM9);
43 this.resultCollector = resultCollector;
44 this.usedByClass = usedByClass;
45 }
46
47 /** {@inheritDoc} */
48 @Override
49 public void visit(final String name, final Object value) {
50 if (value instanceof Type) {
51 resultCollector.addType(usedByClass, (Type) value);
52 }
53 }
54
55 /** {@inheritDoc} */
56 @Override
57 public void visitEnum(final String name, final String desc, final String value) {
58 resultCollector.addDesc(usedByClass, desc);
59 }
60
61 /** {@inheritDoc} */
62 @Override
63 public AnnotationVisitor visitAnnotation(final String name, final String desc) {
64 resultCollector.addDesc(usedByClass, desc);
65
66 return this;
67 }
68
69 /** {@inheritDoc} */
70 @Override
71 public AnnotationVisitor visitArray(final String name) {
72 return this;
73 }
74 }