/*******************************************************************************
* Copyright (c) 2002 - 2006 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.callgraph.impl;
import com.ibm.wala.cfg.IBasicBlock;
import com.ibm.wala.classLoader.IMethod;
import com.ibm.wala.ipa.callgraph.AnalysisCache;
import com.ibm.wala.ipa.callgraph.AnalysisOptions;
import com.ibm.wala.ipa.cha.IClassHierarchy;
import com.ibm.wala.types.Descriptor;
import com.ibm.wala.types.MemberReference;
import com.ibm.wala.types.MethodReference;
import com.ibm.wala.types.TypeName;
import com.ibm.wala.types.TypeReference;
import com.ibm.wala.util.strings.Atom;
/**
* A synthetic method that models the fake root node.
*/
public class FakeRootMethod extends AbstractRootMethod {
public static final Atom name = Atom.findOrCreateAsciiAtom("fakeRootMethod");
public static final Descriptor descr = Descriptor.findOrCreate(new TypeName[0], TypeReference.VoidName);
public static final MethodReference rootMethod = MethodReference.findOrCreate(FakeRootClass.FAKE_ROOT_CLASS, name, descr);
public FakeRootMethod(final IClassHierarchy cha, AnalysisOptions options, AnalysisCache cache) {
super(rootMethod, cha, options, cache);
}
/**
* @return true iff m is the fake root method.
* @throws IllegalArgumentException if m is null
*/
public static boolean isFakeRootMethod(MemberReference m) {
if (m == null) {
throw new IllegalArgumentException("m is null");
}
return m.equals(rootMethod);
}
/**
* @return true iff block is a basic block in the fake root method
* @throws IllegalArgumentException if block is null
*/
public static boolean isFromFakeRoot(IBasicBlock block) {
if (block == null) {
throw new IllegalArgumentException("block is null");
}
IMethod m = block.getMethod();
return FakeRootMethod.isFakeRootMethod(m.getReference());
}
public static MethodReference getRootMethod() {
return rootMethod;
}
}