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package org.aspectj.apache.bcel.generic;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache BCEL" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache",
* "Apache BCEL", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*/
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.Repository;
import org.aspectj.apache.bcel.classfile.JavaClass;
/**
* Denotes reference such as java.lang.String.
*
* @version $Id: ObjectType.java,v 1.5 2008/06/23 04:01:28 aclement Exp $
* @author M. Dahm
*/
public class ObjectType extends ReferenceType {
private String class_name; // Class name of type
/**
* @param class_name fully qualified class name, e.g. java.lang.String
*/
public ObjectType(String class_name) {
super(Constants.T_REFERENCE, toSignature(class_name));//"L" + class_name.replace('.', '/') + ";");
this.class_name = class_name;//.replace('/', '.');
}
private static String toSignature(String classname) {
StringBuffer sig = new StringBuffer();
sig.append("L").append(classname.replace('.','/'));
sig.append(";");
return sig.toString();
}
/** @return name of referenced class
*/
public String getClassName() { return class_name; }
/** @return a hash code value for the object.
*/
public int hashCode() { return class_name.hashCode(); }
/** @return true if both type objects refer to the same class.
*/
public boolean equals(Object type) {
return (type instanceof ObjectType)?
((ObjectType)type).class_name.equals(class_name) : false;
}
/**
* If "this" doesn't reference a class, it references an interface
* or a non-existant entity.
*/
public boolean referencesClass(){
JavaClass jc = Repository.lookupClass(class_name);
if (jc == null)
return false;
else
return jc.isClass();
}
/**
* If "this" doesn't reference an interface, it references a class
* or a non-existant entity.
*/
public boolean referencesInterface(){
JavaClass jc = Repository.lookupClass(class_name);
if (jc == null)
return false;
else
return !jc.isClass();
}
public boolean subclassOf(ObjectType superclass){
if (this.referencesInterface() || superclass.referencesInterface())
return false;
return Repository.instanceOf(this.class_name, superclass.class_name);
}
/**
* Java Virtual Machine Specification edition 2, ? 5.4.4 Access Control
*/
public boolean accessibleTo(ObjectType accessor) {
JavaClass jc = Repository.lookupClass(class_name);
if(jc.isPublic()) {
return true;
} else {
JavaClass acc = Repository.lookupClass(accessor.class_name);
return acc.getPackageName().equals(jc.getPackageName());
}
}
}
