42 lines
2.0 KiB
Java
42 lines
2.0 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.IClass;
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import com.ibm.wala.classLoader.NewSiteReference;
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/**
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* This interface represents policies for selecting a class to allocate at a given new site. The most obvious such policy would be
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* to look at the relevant class hierarchy and lookup the appropriate class based on the type reference at the new site. However,
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* other policies are possible for purposes such as providing an abstraction of unanalyzed libraries or specialized J2EE
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* 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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* allocations ask that object for the class 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 ClassTargetSelector {
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/**
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* Given a calling node and a new site, return the type to be allocated.
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*
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* @param caller the GCNode in the call graph containing the new site.
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* @param site the new site reference of the new site.
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* @return the class to be allocated.
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*/
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IClass getAllocatedTarget(CGNode caller, NewSiteReference site);
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}
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