    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 *
    017 */
    018package org.apache.bcel.generic;
    019
    020import java.io.DataOutputStream;
    021import java.io.IOException;
    022import java.util.ArrayList;
    023import java.util.List;
    024
    025import org.apache.bcel.classfile.ArrayElementValue;
    026import org.apache.bcel.classfile.ElementValue;
    027
    028/**
    029 * @since 6.0
    030 */
    031public class ArrayElementValueGen extends ElementValueGen {
    032    // J5TODO: Should we make this an array or a list? A list would be easier to
    033    // modify ...
    034    private final List<ElementValueGen> evalues;
    035
    036    /**
    037     * @param value
    038     * @param cpool
    039     */
    040    public ArrayElementValueGen(final ArrayElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries) {
    041        super(ARRAY, cpool);
    042        evalues = new ArrayList<>();
    043        final ElementValue[] in = value.getElementValuesArray();
    044        for (final ElementValue element : in) {
    045            evalues.add(ElementValueGen.copy(element, cpool, copyPoolEntries));
    046        }
    047    }
    048
    049    public ArrayElementValueGen(final ConstantPoolGen cp) {
    050        super(ARRAY, cp);
    051        evalues = new ArrayList<>();
    052    }
    053
    054    public ArrayElementValueGen(final int type, final ElementValue[] datums, final ConstantPoolGen cpool) {
    055        super(type, cpool);
    056        if (type != ARRAY) {
    057            throw new IllegalArgumentException("Only element values of type array can be built with this ctor - type specified: " + type);
    058        }
    059        this.evalues = new ArrayList<>();
    060        for (final ElementValue datum : datums) {
    061            evalues.add(ElementValueGen.copy(datum, cpool, true));
    062        }
    063    }
    064
    065    public void addElement(final ElementValueGen gen) {
    066        evalues.add(gen);
    067    }
    068
    069    @Override
    070    public void dump(final DataOutputStream dos) throws IOException {
    071        dos.writeByte(super.getElementValueType()); // u1 type of value (ARRAY == '[')
    072        dos.writeShort(evalues.size());
    073        for (final ElementValueGen element : evalues) {
    074            element.dump(dos);
    075        }
    076    }
    077
    078    /**
    079     * Return immutable variant of this ArrayElementValueGen
    080     */
    081    @Override
    082    public ElementValue getElementValue() {
    083        final ElementValue[] immutableData = new ElementValue[evalues.size()];
    084        int i = 0;
    085        for (final ElementValueGen element : evalues) {
    086            immutableData[i++] = element.getElementValue();
    087        }
    088        return new ArrayElementValue(super.getElementValueType(), immutableData, getConstantPool().getConstantPool());
    089    }
    090
    091    public List<ElementValueGen> getElementValues() {
    092        return evalues;
    093    }
    094
    095    public int getElementValuesSize() {
    096        return evalues.size();
    097    }
    098
    099    @Override
    100    public String stringifyValue() {
    101        final StringBuilder sb = new StringBuilder();
    102        sb.append("[");
    103        String comma = "";
    104        for (final ElementValueGen element : evalues) {
    105            sb.append(comma);
    106            comma = ",";
    107            sb.append(element.stringifyValue());
    108        }
    109        sb.append("]");
    110        return sb.toString();
    111    }
    112}