001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one or more
003 *  contributor license agreements.  See the NOTICE file distributed with
004 *  this work for additional information regarding copyright ownership.
005 *  The ASF licenses this file to You under the Apache License, Version 2.0
006 *  (the "License"); you may not use this file except in compliance with
007 *  the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.commons.compress.harmony.unpack200.bytecode;
018
019import java.io.DataOutputStream;
020import java.io.IOException;
021import java.util.ArrayList;
022import java.util.List;
023
024/**
025 * Annotations class file attribute, either a RuntimeVisibleAnnotations attribute or a RuntimeInvisibleAnnotations attribute.
026 */
027public class RuntimeVisibleorInvisibleAnnotationsAttribute extends AnnotationsAttribute {
028
029    private final int numAnnotations;
030    private final Annotation[] annotations;
031
032    public RuntimeVisibleorInvisibleAnnotationsAttribute(final CPUTF8 name, final Annotation[] annotations) {
033        super(name);
034        this.numAnnotations = annotations.length;
035        this.annotations = annotations;
036    }
037
038    @Override
039    protected int getLength() {
040        int length = 2;
041        for (int i = 0; i < numAnnotations; i++) {
042            length += annotations[i].getLength();
043        }
044        return length;
045    }
046
047    @Override
048    protected ClassFileEntry[] getNestedClassFileEntries() {
049        final List<Object> nested = new ArrayList<>();
050        nested.add(attributeName);
051        for (final Annotation annotation : annotations) {
052            nested.addAll(annotation.getClassFileEntries());
053        }
054        return nested.toArray(ClassFileEntry.NONE);
055    }
056
057    @Override
058    protected void resolve(final ClassConstantPool pool) {
059        super.resolve(pool);
060        for (final Annotation annotation : annotations) {
061            annotation.resolve(pool);
062        }
063    }
064
065    @Override
066    public String toString() {
067        return attributeName.underlyingString() + ": " + numAnnotations + " annotations";
068    }
069
070    @Override
071    protected void writeBody(final DataOutputStream dos) throws IOException {
072        final int size = dos.size();
073        dos.writeShort(numAnnotations);
074        for (int i = 0; i < numAnnotations; i++) {
075            annotations[i].writeBody(dos);
076        }
077        if (dos.size() - size != getLength()) {
078            throw new Error();
079        }
080    }
081}