You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
251 lines
8.4 KiB
251 lines
8.4 KiB
/*
|
|
* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*/
|
|
package com.sun.org.apache.bcel.internal;
|
|
|
|
/* ====================================================================
|
|
* 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.classfile.JavaClass;
|
|
import com.sun.org.apache.bcel.internal.util.*;
|
|
import java.io.*;
|
|
|
|
/**
|
|
* The repository maintains informations about class interdependencies, e.g.,
|
|
* whether a class is a sub-class of another. Delegates actual class loading
|
|
* to SyntheticRepository with current class path by default.
|
|
*
|
|
* @see com.sun.org.apache.bcel.internal.util.Repository
|
|
* @see com.sun.org.apache.bcel.internal.util.SyntheticRepository
|
|
*
|
|
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
|
|
*/
|
|
public abstract class Repository {
|
|
private static com.sun.org.apache.bcel.internal.util.Repository _repository =
|
|
SyntheticRepository.getInstance();
|
|
|
|
/** @return currently used repository instance
|
|
*/
|
|
public static com.sun.org.apache.bcel.internal.util.Repository getRepository() {
|
|
return _repository;
|
|
}
|
|
|
|
/** Set repository instance to be used for class loading
|
|
*/
|
|
public static void setRepository(com.sun.org.apache.bcel.internal.util.Repository rep) {
|
|
_repository = rep;
|
|
}
|
|
|
|
/** Lookup class somewhere found on your CLASSPATH, or whereever the
|
|
* repository instance looks for it.
|
|
*
|
|
* @return class object for given fully qualified class name, or null
|
|
* if the class could not be found or parsed correctly
|
|
*/
|
|
public static JavaClass lookupClass(String class_name) {
|
|
try {
|
|
JavaClass clazz = _repository.findClass(class_name);
|
|
|
|
if(clazz == null) {
|
|
return _repository.loadClass(class_name);
|
|
} else {
|
|
return clazz;
|
|
}
|
|
} catch(ClassNotFoundException ex) { return null; }
|
|
}
|
|
|
|
/**
|
|
* Try to find class source via getResourceAsStream().
|
|
* @see Class
|
|
* @return JavaClass object for given runtime class
|
|
*/
|
|
public static JavaClass lookupClass(Class clazz) {
|
|
try {
|
|
return _repository.loadClass(clazz);
|
|
} catch(ClassNotFoundException ex) { return null; }
|
|
}
|
|
|
|
/** @return class file object for given Java class.
|
|
*/
|
|
public static ClassPath.ClassFile lookupClassFile(String class_name) {
|
|
try {
|
|
return ClassPath.SYSTEM_CLASS_PATH.getClassFile(class_name);
|
|
} catch(IOException e) { return null; }
|
|
}
|
|
|
|
/** Clear the repository.
|
|
*/
|
|
public static void clearCache() {
|
|
_repository.clear();
|
|
}
|
|
|
|
/**
|
|
* Add clazz to repository if there isn't an equally named class already in there.
|
|
*
|
|
* @return old entry in repository
|
|
*/
|
|
public static JavaClass addClass(JavaClass clazz) {
|
|
JavaClass old = _repository.findClass(clazz.getClassName());
|
|
_repository.storeClass(clazz);
|
|
return old;
|
|
}
|
|
|
|
/**
|
|
* Remove class with given (fully qualified) name from repository.
|
|
*/
|
|
public static void removeClass(String clazz) {
|
|
_repository.removeClass(_repository.findClass(clazz));
|
|
}
|
|
|
|
/**
|
|
* Remove given class from repository.
|
|
*/
|
|
public static void removeClass(JavaClass clazz) {
|
|
_repository.removeClass(clazz);
|
|
}
|
|
|
|
/**
|
|
* @return list of super classes of clazz in ascending order, i.e.,
|
|
* Object is always the last element
|
|
*/
|
|
public static JavaClass[] getSuperClasses(JavaClass clazz) {
|
|
return clazz.getSuperClasses();
|
|
}
|
|
|
|
/**
|
|
* @return list of super classes of clazz in ascending order, i.e.,
|
|
* Object is always the last element. return "null", if class
|
|
* cannot be found.
|
|
*/
|
|
public static JavaClass[] getSuperClasses(String class_name) {
|
|
JavaClass jc = lookupClass(class_name);
|
|
return (jc == null? null : getSuperClasses(jc));
|
|
}
|
|
|
|
/**
|
|
* @return all interfaces implemented by class and its super
|
|
* classes and the interfaces that those interfaces extend, and so on.
|
|
* (Some people call this a transitive hull).
|
|
*/
|
|
public static JavaClass[] getInterfaces(JavaClass clazz) {
|
|
return clazz.getAllInterfaces();
|
|
}
|
|
|
|
/**
|
|
* @return all interfaces implemented by class and its super
|
|
* classes and the interfaces that extend those interfaces, and so on
|
|
*/
|
|
public static JavaClass[] getInterfaces(String class_name) {
|
|
return getInterfaces(lookupClass(class_name));
|
|
}
|
|
|
|
/**
|
|
* Equivalent to runtime "instanceof" operator.
|
|
* @return true, if clazz is an instance of super_class
|
|
*/
|
|
public static boolean instanceOf(JavaClass clazz, JavaClass super_class) {
|
|
return clazz.instanceOf(super_class);
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an instance of super_class
|
|
*/
|
|
public static boolean instanceOf(String clazz, String super_class) {
|
|
return instanceOf(lookupClass(clazz), lookupClass(super_class));
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an instance of super_class
|
|
*/
|
|
public static boolean instanceOf(JavaClass clazz, String super_class) {
|
|
return instanceOf(clazz, lookupClass(super_class));
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an instance of super_class
|
|
*/
|
|
public static boolean instanceOf(String clazz, JavaClass super_class) {
|
|
return instanceOf(lookupClass(clazz), super_class);
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an implementation of interface inter
|
|
*/
|
|
public static boolean implementationOf(JavaClass clazz, JavaClass inter) {
|
|
return clazz.implementationOf(inter);
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an implementation of interface inter
|
|
*/
|
|
public static boolean implementationOf(String clazz, String inter) {
|
|
return implementationOf(lookupClass(clazz), lookupClass(inter));
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an implementation of interface inter
|
|
*/
|
|
public static boolean implementationOf(JavaClass clazz, String inter) {
|
|
return implementationOf(clazz, lookupClass(inter));
|
|
}
|
|
|
|
/**
|
|
* @return true, if clazz is an implementation of interface inter
|
|
*/
|
|
public static boolean implementationOf(String clazz, JavaClass inter) {
|
|
return implementationOf(lookupClass(clazz), inter);
|
|
}
|
|
}
|