59 lines
1.8 KiB
Java
59 lines
1.8 KiB
Java
/*******************************************************************************
|
|
* Copyright (c) 2009 IBM Corporation.
|
|
* All rights reserved. This program and the accompanying materials
|
|
* are made available under the terms of the Eclipse Public License v1.0
|
|
* which accompanies this distribution, and is available at
|
|
* http://www.eclipse.org/legal/epl-v10.html
|
|
*
|
|
* Contributors:
|
|
* IBM Corporation - initial API and implementation
|
|
*******************************************************************************/
|
|
package com.ibm.wala.ipa.cha;
|
|
|
|
import com.ibm.wala.classLoader.IClass;
|
|
import com.ibm.wala.classLoader.IMethod;
|
|
import com.ibm.wala.types.MethodReference;
|
|
|
|
/**
|
|
* Utilities for querying a class hierarchy
|
|
*/
|
|
public class ClassHierarchyUtil {
|
|
|
|
/**
|
|
* find the root of the inheritance tree for method m.
|
|
*/
|
|
public static IMethod getRootOfInheritanceTree(IMethod m) {
|
|
IClass c = m.getDeclaringClass();
|
|
IClass parent = c.getSuperclass();
|
|
if (parent == null) {
|
|
return m;
|
|
} else {
|
|
MethodReference ref = MethodReference.findOrCreate(parent.getReference(), m.getSelector());
|
|
IMethod m2 = m.getClassHierarchy().resolveMethod(ref);
|
|
if (m2 != null && !m2.equals(m)) {
|
|
return getRootOfInheritanceTree(m2);
|
|
}
|
|
return m;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the method that m overrides, or null if none
|
|
*/
|
|
public static IMethod getOverriden(IMethod m) {
|
|
IClass c = m.getDeclaringClass();
|
|
IClass parent = c.getSuperclass();
|
|
if (parent == null) {
|
|
return null;
|
|
} else {
|
|
MethodReference ref = MethodReference.findOrCreate(parent.getReference(), m.getSelector());
|
|
IMethod m2 = m.getClassHierarchy().resolveMethod(ref);
|
|
if (m2 != null && !m2.equals(m)) {
|
|
return m2;
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
}
|