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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.annotationProcessors.utils;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Comparator;
public class AlphabeticAnnotatableEntityComparator<T extends Member> implements Comparator<T> {
@Override
public int compare(T aLhs, T aRhs) {
// Constructors, Methods, Fields.
boolean lIsConstructor = aLhs instanceof Constructor;
boolean rIsConstructor = aRhs instanceof Constructor;
boolean lIsMethod = aLhs instanceof Method;
boolean rIsField = aRhs instanceof Field;
if (lIsConstructor) {
if (!rIsConstructor) {
return -1;
}
} else if (lIsMethod) {
if (rIsConstructor) {
return 1;
} else if (rIsField) {
return -1;
}
} else {
if (!rIsField) {
return 1;
}
}
// Verify these objects are the same type and cast them.
if (aLhs instanceof Method) {
return compare((Method) aLhs, (Method) aRhs);
} else if (aLhs instanceof Field) {
return compare((Field) aLhs, (Field) aRhs);
} else {
return compare((Constructor) aLhs, (Constructor) aRhs);
}
}
// Alas, the type system fails us.
private static int compare(Method aLhs, Method aRhs) {
// Initially, attempt to differentiate the methods be name alone..
String lName = aLhs.getName();
String rName = aRhs.getName();
int ret = lName.compareTo(rName);
if (ret != 0) {
return ret;
}
// The names were the same, so we need to compare signatures to find their uniqueness..
lName = Utils.getSignature(aLhs);
rName = Utils.getSignature(aRhs);
return lName.compareTo(rName);
}
private static int compare(Constructor<?> aLhs, Constructor<?> aRhs) {
// The names will be the same, so we need to compare signatures to find their uniqueness..
String lName = Utils.getSignature(aLhs);
String rName = Utils.getSignature(aRhs);
return lName.compareTo(rName);
}
private static int compare(Field aLhs, Field aRhs) {
// Compare field names..
String lName = aLhs.getName();
String rName = aRhs.getName();
return lName.compareTo(rName);
}
}
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