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.pack200.Pack200Exception; 020import org.apache.commons.compress.harmony.unpack200.SegmentConstantPool; 021import org.apache.commons.compress.harmony.unpack200.bytecode.ByteCode; 022import org.apache.commons.compress.harmony.unpack200.bytecode.ClassFileEntry; 023import org.apache.commons.compress.harmony.unpack200.bytecode.OperandManager; 024 025/** 026 * Abstract superclass of those classes which look up init methods (these are class specific methods). They use 027 * getInitMethodPoolEntry to find the methods. 028 */ 029public abstract class InitMethodReferenceForm extends ClassSpecificReferenceForm { 030 031 public InitMethodReferenceForm(final int opcode, final String name, final int[] rewrite) { 032 super(opcode, name, rewrite); 033 } 034 035 @Override 036 protected abstract String context(OperandManager operandManager); 037 038 @Override 039 protected int getPoolID() { 040 return SegmentConstantPool.CP_METHOD; 041 } 042 043 @Override 044 protected int getOffset(final OperandManager operandManager) { 045 return operandManager.nextInitRef(); 046 } 047 048 @Override 049 protected void setNestedEntries(final ByteCode byteCode, final OperandManager operandManager, final int offset) 050 throws Pack200Exception { 051 final SegmentConstantPool globalPool = operandManager.globalConstantPool(); 052 ClassFileEntry[] nested = null; 053 nested = new ClassFileEntry[] { 054 globalPool.getInitMethodPoolEntry(SegmentConstantPool.CP_METHOD, offset, context(operandManager))}; 055 byteCode.setNested(nested); 056 byteCode.setNestedPositions(new int[][] {{0, 2}}); 057 } 058}