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;
20
21 import java.io.InputStream;
22 import java.util.HashSet;
23 import java.util.Set;
24
25 /**
26 * Simply collects the set of visited classes.
27 *
28 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
29 * @see #getClasses()
30 */
31 public class CollectorClassFileVisitor implements ClassFileVisitor {
32 private final Set<String> classes;
33
34 private final ClassesPatterns excludedClasses;
35
36 /**
37 * <p>Constructor for CollectorClassFileVisitor.</p>
38 */
39 public CollectorClassFileVisitor() {
40 this(new ClassesPatterns());
41 }
42
43 public CollectorClassFileVisitor(ClassesPatterns excludedClasses) {
44 classes = new HashSet<>();
45 this.excludedClasses = excludedClasses;
46 }
47
48 /** {@inheritDoc} */
49 @Override
50 public void visitClass(String className, InputStream in) {
51 // inner classes have equivalent compilation requirement as container class
52 if (className.indexOf('$') < 0 && !excludedClasses.isMatch(className)) {
53 classes.add(className);
54 }
55 }
56
57 /**
58 * <p>Getter for the field <code>classes</code>.</p>
59 *
60 * @return a {@link java.util.Set} object.
61 */
62 public Set<String> getClasses() {
63 return classes;
64 }
65 }