1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 package org.apache.bcel.util; 19 20 import java.util.Collection; 21 import java.util.HashMap; 22 import java.util.Map; 23 24 import org.apache.bcel.classfile.JavaClass; 25 26 /** 27 * Utility class implementing a (typesafe) set of JavaClass objects. 28 * Since JavaClass has no equals() method, the name of the class is 29 * used for comparison. 30 * 31 * @version $Id$ 32 * @see ClassStack 33 */ 34 public class ClassSet { 35 36 private final Map<String, JavaClass> map = new HashMap<>(); 37 38 39 public boolean add( final JavaClass clazz ) { 40 boolean result = false; 41 if (!map.containsKey(clazz.getClassName())) { 42 result = true; 43 map.put(clazz.getClassName(), clazz); 44 } 45 return result; 46 } 47 48 49 public void remove( final JavaClass clazz ) { 50 map.remove(clazz.getClassName()); 51 } 52 53 54 public boolean empty() { 55 return map.isEmpty(); 56 } 57 58 59 public JavaClass[] toArray() { 60 final Collection<JavaClass> values = map.values(); 61 final JavaClass[] classes = new JavaClass[values.size()]; 62 values.toArray(classes); 63 return classes; 64 } 65 66 67 public String[] getClassNames() { 68 return map.keySet().toArray(new String[map.size()]); 69 } 70 } 71
