- package com.sun.org.apache.bcel.internal.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 apache@apache.org.
- *
- * 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
- * <http://www.apache.org/>.
- */
- import com.sun.org.apache.bcel.internal.Constants;
- import com.sun.org.apache.bcel.internal.Repository;
- import com.sun.org.apache.bcel.internal.classfile.JavaClass;
-
- /**
- * Denotes reference such as java.lang.String.
- *
- * @version $Id: ObjectType.java,v 1.1.1.1 2001/10/29 20:00:25 jvanzyl Exp $
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
- */
- public final 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, "L" + class_name.replace('.', '/') + ";");
- this.class_name = class_name.replace('/', '.');
- }
-
- /** @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());
- }
- }
- }