new utility class
git-svn-id: https://wala.svn.sourceforge.net/svnroot/wala/trunk@3393 f5eafffb-2e1d-0410-98e4-8ec43c5233c4
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/*******************************************************************************
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* Copyright (c) 2009 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.ipa.cha;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.types.MethodReference;
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/**
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* Utilities for querying a class hierarchy
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*/
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public class ClassHierarchyUtil {
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/**
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* find the root of the inheritance tree for method m.
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*/
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public static IMethod getRootOfInheritanceTree(IMethod m) {
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try {
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IClass c = m.getDeclaringClass();
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IClass parent = c.getSuperclass();
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if (parent == null) {
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return m;
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} else {
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MethodReference ref = MethodReference.findOrCreate(parent.getReference(), m.getSelector());
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IMethod m2 = m.getClassHierarchy().resolveMethod(ref);
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if (m2 != null && !m2.equals(m)) {
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return getRootOfInheritanceTree(m2);
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}
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return m;
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}
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} catch (ClassHierarchyException e) {
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return m;
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}
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}
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}
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