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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 java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
/**
* A specific type of DiffCriteria which is only true for classes, methods
* and fields which are not synthetic and public.
*
* @author <a href="mailto:antony@cyberiantiger.org">Antony Riley</a>
*/
public class PublicDiffCriteria implements DiffCriteria
{
/**
* Check if a class is valid.
* If the class is not synthetic and public, return true.
*
* @param info Info describing the class.
* @return True if the class meets the criteria, false otherwise.
*/
public boolean validClass(ClassInfo info) {
return !info.isSynthetic() && info.isPublic();
}
/**
* Check if a method is valid.
* If the method is not synthetic and public, return true.
*
* @param info Info describing the method.
* @return True if the method meets the criteria, false otherwise.
*/
public boolean validMethod(MethodInfo info) {
return !info.isSynthetic() && info.isPublic();
}
/**
* Check if a field is valid.
* If the method is not synthetic and public, return true.
*
* @param info Info describing the field.
* @return True if the field meets the criteria, false otherwise.
*/
public boolean validField(FieldInfo info) {
return !info.isSynthetic() && info.isPublic();
}
/**
* Check if there is a change between two versions of a class.
* Returns true if the access flags differ, or if the superclass differs
* or if the implemented interfaces differ.
*
* @param oldInfo Info about the old version of the class.
* @param newInfo Info about the new version of the class.
* @return True if the classes differ, false otherwise.
*/
public boolean differs(ClassInfo oldInfo, ClassInfo newInfo) {
if (Tools.isClassAccessChange(oldInfo.getAccess(), newInfo.getAccess()))
return true;
// Yes classes can have a null supername, e.g. java.lang.Object !
if(oldInfo.getSupername() == null) {
if(newInfo.getSupername() != null) {
return true;
}
} else if (!oldInfo.getSupername().equals(newInfo.getSupername())) {
return true;
}
final Set<String> oldInterfaces
= new HashSet(Arrays.asList(oldInfo.getInterfaces()));
final Set<String> newInterfaces
= new HashSet(Arrays.asList(newInfo.getInterfaces()));
if (!oldInterfaces.equals(newInterfaces))
return true;
return false;
}
/**
* Check if there is a change between two versions of a method.
* Returns true if the access flags differ, or if the thrown
* exceptions differ.
*
* @param oldInfo Info about the old version of the method.
* @param newInfo Info about the new version of the method.
* @return True if the methods differ, false otherwise.
*/
public boolean differs(MethodInfo oldInfo, MethodInfo newInfo) {
if (Tools.isMethodAccessChange(oldInfo.getAccess(), newInfo.getAccess()))
return true;
if (oldInfo.getExceptions() == null
|| newInfo.getExceptions() == null) {
if (oldInfo.getExceptions() != newInfo.getExceptions())
return true;
} else {
final Set<String> oldExceptions
= new HashSet(Arrays.asList(oldInfo.getExceptions()));
final Set<String> newExceptions
= new HashSet(Arrays.asList(newInfo.getExceptions()));
if (!oldExceptions.equals(newExceptions))
return true;
}
return false;
}
/**
* Check if there is a change between two versions of a field.
* Returns true if the access flags differ, or if the inital value
* of the field differs.
*
* @param oldInfo Info about the old version of the field.
* @param newInfo Info about the new version of the field.
* @return True if the fields differ, false otherwise.
*/
public boolean differs(FieldInfo oldInfo, FieldInfo newInfo) {
if (Tools.isFieldAccessChange(oldInfo.getAccess(), newInfo.getAccess()))
return true;
if (oldInfo.getValue() == null || newInfo.getValue() == null) {
if (oldInfo.getValue() != newInfo.getValue())
return true;
} else if (!oldInfo.getValue().equals(newInfo.getValue()))
return true;
return false;
}
}
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