    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 references).
    026 */
    027public class IMethodRefForm extends ReferenceForm {
    028
    029    public IMethodRefForm(final int opcode, final String name, final int[] rewrite) {
    030        super(opcode, name, rewrite);
    031    }
    032
    033    @Override
    034    protected int getOffset(final OperandManager operandManager) {
    035        return operandManager.nextIMethodRef();
    036    }
    037
    038    @Override
    039    protected int getPoolID() {
    040        return SegmentConstantPool.CP_IMETHOD;
    041    }
    042
    043    /*
    044     * (non-Javadoc)
    045     *
    046     * @see org.apache.commons.compress.harmony.unpack200.bytecode.forms.ByteCodeForm#setByteCodeOperands(org.apache.commons.
    047     * compress.harmony.unpack200.bytecode.ByteCode, org.apache.commons.compress.harmony.unpack200.bytecode.OperandTable,
    048     * org.apache.commons.compress.harmony.unpack200.Segment)
    049     */
    050    @Override
    051    public void setByteCodeOperands(final ByteCode byteCode, final OperandManager operandManager, final int codeLength) {
    052        super.setByteCodeOperands(byteCode, operandManager, codeLength);
    053        final int count = ((CPInterfaceMethodRef) byteCode.getNestedClassFileEntries()[0]).invokeInterfaceCount();
    054        byteCode.getRewrite()[3] = count;
    055    }
    056}