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
026 * attribute.
027 */
028public class RuntimeVisibleorInvisibleAnnotationsAttribute extends AnnotationsAttribute {
029
030    private final int numAnnotations;
031    private final Annotation[] annotations;
032
033    public RuntimeVisibleorInvisibleAnnotationsAttribute(final CPUTF8 name, final Annotation[] annotations) {
034        super(name);
035        this.numAnnotations = annotations.length;
036        this.annotations = annotations;
037    }
038
039    @Override
040    protected int getLength() {
041        int length = 2;
042        for (int i = 0; i < numAnnotations; i++) {
043            length += annotations[i].getLength();
044        }
045        return length;
046    }
047
048    @Override
049    protected ClassFileEntry[] getNestedClassFileEntries() {
050        final List<Object> nested = new ArrayList<>();
051        nested.add(attributeName);
052        for (final Annotation annotation : annotations) {
053            nested.addAll(annotation.getClassFileEntries());
054        }
055        return nested.toArray(ClassFileEntry.NONE);
056    }
057
058    @Override
059    protected void resolve(final ClassConstantPool pool) {
060        super.resolve(pool);
061        for (final Annotation annotation : annotations) {
062            annotation.resolve(pool);
063        }
064    }
065
066    @Override
067    public String toString() {
068        return attributeName.underlyingString() + ": " + numAnnotations + " annotations";
069    }
070
071    @Override
072    protected void writeBody(final DataOutputStream dos) throws IOException {
073        final int size = dos.size();
074        dos.writeShort(numAnnotations);
075        for (int i = 0; i < numAnnotations; i++) {
076            annotations[i].writeBody(dos);
077        }
078        if (dos.size() - size != getLength()) {
079            throw new Error();
080        }
081    }
082}