/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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package com.sun.org.apache.bcel.internal.generic;
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.
Author: M. Dahm
/**
* Denotes reference such as java.lang.String.
*
* @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
Params: - class_name – fully qualified class name, e.g. java.lang.String
/**
* @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('/', '.');
}
Returns: name of referenced class
/** @return name of referenced class
*/
public String getClassName() { return class_name; }
Returns: a hash code value for the object.
/** @return a hash code value for the object.
*/
public int hashCode() { return class_name.hashCode(); }
Returns: true if both type objects refer to the same class.
/** @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.
/**
* 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.
/**
* 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
/**
* 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());
}
}
}