ClassSet.java
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.bcel.util;
import java.util.HashMap;
import java.util.Map;
import org.apache.bcel.classfile.JavaClass;
import org.apache.commons.lang3.ArrayUtils;
/**
* Utility class implementing a (type-safe) set of JavaClass objects. Since JavaClass has no equals() method, the name of the class is used for comparison.
*
* @see ClassStack
*/
public class ClassSet {
private final Map<String, JavaClass> map = new HashMap<>();
public boolean add(final JavaClass clazz) {
return map.putIfAbsent(clazz.getClassName(), clazz) != null;
}
public boolean empty() {
return map.isEmpty();
}
public String[] getClassNames() {
return map.keySet().toArray(ArrayUtils.EMPTY_STRING_ARRAY);
}
public void remove(final JavaClass clazz) {
map.remove(clazz.getClassName());
}
public JavaClass[] toArray() {
return map.values().toArray(JavaClass.EMPTY_ARRAY);
}
}