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.bcel.verifier.structurals; 018 019import org.apache.bcel.Const; 020import org.apache.bcel.Constants; 021import org.apache.bcel.generic.ObjectType; 022import org.apache.bcel.generic.ReferenceType; 023 024/** 025 * This class represents an uninitialized object type; see The Java Virtual Machine Specification, Second Edition, page 026 * 147: 4.9.4 for more details. 027 */ 028public class UninitializedObjectType extends ReferenceType implements Constants { 029 030 /** The "initialized" version. */ 031 private final ObjectType initialized; 032 033 /** Creates a new instance. */ 034 public UninitializedObjectType(final ObjectType t) { 035 super(Const.T_UNKNOWN, "<UNINITIALIZED OBJECT OF TYPE '" + t.getClassName() + "'>"); 036 initialized = t; 037 } 038 039 /** 040 * Returns true on equality of this and o. Equality means the ObjectType instances of "initialized" equal one another in 041 * this and the o instance. 042 * 043 */ 044 @Override 045 public boolean equals(final Object o) { 046 if (!(o instanceof UninitializedObjectType)) { 047 return false; 048 } 049 return initialized.equals(((UninitializedObjectType) o).initialized); 050 } 051 052 /** 053 * Returns the ObjectType of the same class as the one of the uninitialized object represented by this 054 * UninitializedObjectType instance. 055 */ 056 public ObjectType getInitialized() { 057 return initialized; 058 } 059 060 /** 061 * @return a hash code value for the object. 062 */ 063 @Override 064 public int hashCode() { 065 return initialized.hashCode(); 066 } 067}