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/**
* Copyright 2012-2014 Julien Eluard and contributors
* This project includes software developed by Julien Eluard: https://github.com/jeluard/
*
* Licensed 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.
*/
package org.osjava.jardiff;
import org.objectweb.asm.Opcodes;
/**
* A set of Tools which do not belong anywhere else in the API at this time.
* This is nasty, but for now, useful.
*
* @author <a href="mailto:antony@cyberiantiger.org">Antony Riley</a>
*/
public final class Tools
{
/**
* Private constructor so this class can't be instantiated.
*/
private Tools() {
/* empty */
}
/**
* Get the java class name given an internal class name.
* This method currently replaces all instances of $ and / with . this
* may not be according to the java language spec, and will almost
* certainly fail for some inner classes.
*
* @param internalName The internal name of the class.
* @return The java class name.
*/
public static final String getClassName(String internalName) {
StringBuffer ret = new StringBuffer(internalName.length());
for (int i = 0; i < internalName.length(); i++) {
char ch = internalName.charAt(i);
switch (ch) {
case '$':
case '/':
ret.append('.');
break;
default:
ret.append(ch);
}
}
return ret.toString();
}
/**
* Returns whether newAccess is incompatible with oldAccess
*
* @param oldAccess
* @param newAccess
* @return
*/
public static boolean isAccessChange(int oldAccess, int newAccess) {
if ((oldAccess & Opcodes.ACC_FINAL) == 0 && (newAccess & Opcodes.ACC_FINAL) > 0) {
return true;
} else if ((oldAccess & Opcodes.ACC_ABSTRACT) == 0 && (newAccess & Opcodes.ACC_ABSTRACT) > 0) {
return true;
} else {
oldAccess = oldAccess & ~Opcodes.ACC_FINAL & ~Opcodes.ACC_ABSTRACT;
newAccess = newAccess & ~Opcodes.ACC_FINAL & ~Opcodes.ACC_ABSTRACT;
}
return oldAccess != newAccess;
}
}
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