001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.commons.compress.harmony.unpack200.bytecode.forms;
020
021import org.apache.commons.compress.harmony.unpack200.SegmentConstantPool;
022import org.apache.commons.compress.harmony.unpack200.bytecode.OperandManager;
023
024/**
025 * This class implements the byte code form for those bytecodes which have double references (and only double references).
026 */
027public class DoubleForm extends ReferenceForm {
028
029    /**
030     * Constructs a new instance with the specified opcode, name, operandType and rewrite.
031     *
032     * @param opcode  index corresponding to the opcode's value.
033     * @param name    String printable name of the opcode.
034     * @param rewrite Operand positions (which will later be rewritten in ByteCodes) are indicated by -1.
035     */
036    public DoubleForm(final int opcode, final String name, final int[] rewrite) {
037        super(opcode, name, rewrite);
038    }
039
040    @Override
041    protected int getOffset(final OperandManager operandManager) {
042        return operandManager.nextDoubleRef();
043    }
044
045    @Override
046    protected int getPoolID() {
047        return SegmentConstantPool.CP_DOUBLE;
048    }
049}