43 lines
2.2 KiB
Java
43 lines
2.2 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 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.callgraph;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IMethod;
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/**
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* This interface represents policies for selecting a method to call at a given invocation site. The most obvious such policy would
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* be to look at the relevant class hierarchy and lookup the appropriate method based on the type reference and name and descriptor
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* at the call site. However, other policies are possible for purposes such as providing an abstraction of unanalyzed libraries or
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* specialized J2EE functionality.
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*
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* Such policies are consulted by the different analysis mechanisms, both the flow-based and non-flow algorithms. The current
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* mechanism is that the policy object are registered with the AnalysisOptions object, and all analyses that need to analyze
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* invocations ask that object for the method selector to use.
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*
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* In general, for specialized selectors, it is good practice to build selectors that handle the special case of interest, and
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* otherwise delegate to a child selector. When registering with the AnalysisOptions object, make the child selector be whatever the
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* options object had before.
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*/
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public interface MethodTargetSelector {
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/**
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* Given a calling node, a call site and (optionally) a dispatch type, return the target method to be called.
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*
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* @param caller the GCNode in the call graph containing the call
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* @param site the call site reference of the call site
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* @param receiver the type of the target object or null
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* @return the method to be called.
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*/
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IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass receiver);
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}
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