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    1   /*
    2    * Copyright  2000-2004 The Apache Software Foundation
    3    *
    4    *  Licensed under the Apache License, Version 2.0 (the "License");
    5    *  you may not use this file except in compliance with the License.
    6    *  You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   *  Unless required by applicable law or agreed to in writing, software
    11   *  distributed under the License is distributed on an "AS IS" BASIS,
    12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *  See the License for the specific language governing permissions and
    14   *  limitations under the License.
    15   *
    16   */
    17  package org.apache.bcel.verifier.structurals;
    18
    19
    20  import org.apache.bcel.Constants;
    21  import org.apache.bcel.generic.ObjectType;
    22  import org.apache.bcel.generic.ReferenceType;
    23
    24  /***
    25   * This class represents an uninitialized object type; see The Java
    26   * Virtual Machine Specification, Second Edition, page 147: 4.9.4 for
    27   * more details.
    28   *
    29   * @version $Id: UninitializedObjectType.java 386056 2006-03-15 11:31:56Z tcurdt $
    30   * @author Enver Haase
    31   */
    32  public class UninitializedObjectType extends ReferenceType implements Constants{
    33
    34  	/*** The "initialized" version. */
    35  	private ObjectType initialized;
    36
    37  	/*** Creates a new instance. */
    38  	public UninitializedObjectType(ObjectType t){
    39  		super(T_UNKNOWN, "<UNINITIALIZED OBJECT OF TYPE '"+t.getClassName()+"'>");
    40  		initialized = t;
    41  	}
    42
    43  	/***
    44  	 * Returns the ObjectType of the same class as the one of the uninitialized object
    45  	 * represented by this UninitializedObjectType instance.
    46  	 */
    47  	public ObjectType getInitialized(){
    48  		return initialized;
    49  	}
    50
    51  	/*** @return a hash code value for the object.
    52       */
    53  	public int hashCode() { return initialized.hashCode(); }
    54
    55  	/***
    56  	 * Returns true on equality of this and o.
    57  	 * Equality means the ObjectType instances of "initialized"
    58  	 * equal one another in this and the o instance.
    59  	 *
    60  	 */
    61  	public boolean equals(Object o){
    62  		if (! (o instanceof UninitializedObjectType)) {
    63              return false;
    64          }
    65  		return initialized.equals(((UninitializedObjectType)o).initialized);
    66  	}
    67  }