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.forms;
018
019import org.apache.commons.compress.harmony.unpack200.SegmentConstantPool;
020import org.apache.commons.compress.harmony.unpack200.bytecode.ByteCode;
021import org.apache.commons.compress.harmony.unpack200.bytecode.CPInterfaceMethodRef;
022import org.apache.commons.compress.harmony.unpack200.bytecode.OperandManager;
023
024/**
025 * This class implements the byte code form for those bytecodes which have IMethod references (and only IMethod
026 * references).
027 */
028public class IMethodRefForm extends ReferenceForm {
029
030    public IMethodRefForm(final int opcode, final String name, final int[] rewrite) {
031        super(opcode, name, rewrite);
032    }
033
034    @Override
035    protected int getOffset(final OperandManager operandManager) {
036        return operandManager.nextIMethodRef();
037    }
038
039    @Override
040    protected int getPoolID() {
041        return SegmentConstantPool.CP_IMETHOD;
042    }
043
044    /*
045     * (non-Javadoc)
046     *
047     * @see
048     * org.apache.commons.compress.harmony.unpack200.bytecode.forms.ByteCodeForm#setByteCodeOperands(org.apache.commons.
049     * compress.harmony.unpack200.bytecode.ByteCode,
050     * org.apache.commons.compress.harmony.unpack200.bytecode.OperandTable,
051     * org.apache.commons.compress.harmony.unpack200.Segment)
052     */
053    @Override
054    public void setByteCodeOperands(final ByteCode byteCode, final OperandManager operandManager,
055        final int codeLength) {
056        super.setByteCodeOperands(byteCode, operandManager, codeLength);
057        final int count = ((CPInterfaceMethodRef) byteCode.getNestedClassFileEntries()[0]).invokeInterfaceCount();
058        byteCode.getRewrite()[3] = count;
059    }
060}