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 all classes that have class-specific references to constant pool information. These classes have a context (a string representing a 027 * pack200 class) i.e., they send getClassSpecificPoolEntry instead of getConstantPoolEntry. 028 */ 029public abstract class ClassSpecificReferenceForm extends ReferenceForm { 030 031 public ClassSpecificReferenceForm(final int opcode, final String name, final int[] rewrite) { 032 super(opcode, name, rewrite); 033 } 034 035 protected abstract String context(OperandManager operandManager); 036 037 @Override 038 protected abstract int getOffset(OperandManager operandManager); 039 040 @Override 041 protected abstract int getPoolID(); 042 043 @Override 044 protected void setNestedEntries(final ByteCode byteCode, final OperandManager operandManager, final int offset) throws Pack200Exception { 045 final SegmentConstantPool globalPool = operandManager.globalConstantPool(); 046 final ClassFileEntry[] nested = { globalPool.getClassSpecificPoolEntry(getPoolID(), offset, context(operandManager)) }; 047 byteCode.setNested(nested); 048 byteCode.setNestedPositions(new int[][] { { 0, 2 } }); 049 } 050 051}