    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 * Parameter annotations class file attribute, either a RuntimeVisibleParameterAnnotations attribute or a
    026 * RuntimeInvisibleParameterAnnotations attribute.
    027 */
    028public class RuntimeVisibleorInvisibleParameterAnnotationsAttribute extends AnnotationsAttribute {
    029
    030    private final int num_parameters;
    031    private final ParameterAnnotation[] parameter_annotations;
    032
    033    public RuntimeVisibleorInvisibleParameterAnnotationsAttribute(final CPUTF8 name,
    034        final ParameterAnnotation[] parameter_annotations) {
    035        super(name);
    036        this.num_parameters = parameter_annotations.length;
    037        this.parameter_annotations = parameter_annotations;
    038    }
    039
    040    @Override
    041    protected int getLength() {
    042        int length = 1;
    043        for (int i = 0; i < num_parameters; i++) {
    044            length += parameter_annotations[i].getLength();
    045        }
    046        return length;
    047    }
    048
    049    @Override
    050    protected void resolve(final ClassConstantPool pool) {
    051        super.resolve(pool);
    052        for (int i = 0; i < parameter_annotations.length; i++) {
    053            parameter_annotations[i].resolve(pool);
    054        }
    055    }
    056
    057    @Override
    058    protected void writeBody(final DataOutputStream dos) throws IOException {
    059        dos.writeByte(num_parameters);
    060        for (int i = 0; i < num_parameters; i++) {
    061            parameter_annotations[i].writeBody(dos);
    062        }
    063    }
    064
    065    @Override
    066    public String toString() {
    067        return attributeName.underlyingString() + ": " + num_parameters + " parameter annotations";
    068    }
    069
    070    /**
    071     * ParameterAnnotation represents the annotations on a single parameter.
    072     */
    073    public static class ParameterAnnotation {
    074
    075        private final Annotation[] annotations;
    076        private final int num_annotations;
    077
    078        public ParameterAnnotation(final Annotation[] annotations) {
    079            this.num_annotations = annotations.length;
    080            this.annotations = annotations;
    081        }
    082
    083        public void writeBody(final DataOutputStream dos) throws IOException {
    084            dos.writeShort(num_annotations);
    085            for (int i = 0; i < annotations.length; i++) {
    086                annotations[i].writeBody(dos);
    087            }
    088        }
    089
    090        public void resolve(final ClassConstantPool pool) {
    091            for (int i = 0; i < annotations.length; i++) {
    092                annotations[i].resolve(pool);
    093            }
    094        }
    095
    096        public int getLength() {
    097            int length = 2;
    098            for (int i = 0; i < annotations.length; i++) {
    099                length += annotations[i].getLength();
    100            }
    101            return length;
    102        }
    103
    104        public List getClassFileEntries() {
    105            final List nested = new ArrayList();
    106            for (int i = 0; i < annotations.length; i++) {
    107                nested.addAll(annotations[i].getClassFileEntries());
    108            }
    109            return nested;
    110        }
    111
    112    }
    113
    114    @Override
    115    protected ClassFileEntry[] getNestedClassFileEntries() {
    116        final List nested = new ArrayList();
    117        nested.add(attributeName);
    118        for (int i = 0; i < parameter_annotations.length; i++) {
    119            nested.addAll(parameter_annotations[i].getClassFileEntries());
    120        }
    121        final ClassFileEntry[] nestedEntries = new ClassFileEntry[nested.size()];
    122        for (int i = 0; i < nestedEntries.length; i++) {
    123            nestedEntries[i] = (ClassFileEntry) nested.get(i);
    124        }
    125        return nestedEntries;
    126    }
    127
    128}