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}