Class ClassFactoryContextSelector

java.lang.Object

com.ibm.wala.analysis.reflection.ClassFactoryContextSelector

All Implemented Interfaces:

ContextSelector

public class ClassFactoryContextSelector
extends Object
implements ContextSelector

A ContextSelector to intercept calls to reflective class factories (e.g. Class.forName()) when the parameter is a string constant

Field Summary

Fields

Modifier and Type	Field	Description
static final MethodReference	FOR_NAME_REF
static final Atom	forNameAtom
static final MethodReference	LOAD_CLASS_REF
static final Atom	loadClassAtom

Constructor Summary

Constructors

Constructor	Description
ClassFactoryContextSelector()

Method Summary

Modifier and Type	Method	Description
Context	getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] receiver)	If the CallSiteReference invokes Class.forName(s) and s is a string constant, return a JavaTypeContext representing the type named by s, if we can resolve it in the IClassHierarchy.
IntSet	getRelevantParameters(CGNode caller, CallSiteReference site)	Given a calling node and a call site, return the set of parameters based on which this selector may choose to specialize contexts.
int	getUseOfStringParameter(SSAAbstractInvokeInstruction call)
static boolean	isClassFactory(MethodReference m)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

forNameAtom

public static final Atom forNameAtom

FOR_NAME_REF

public static final MethodReference FOR_NAME_REF

loadClassAtom

public static final Atom loadClassAtom

LOAD_CLASS_REF

public static final MethodReference LOAD_CLASS_REF

Constructor Details

ClassFactoryContextSelector

public ClassFactoryContextSelector()

Method Details

isClassFactory

public static boolean isClassFactory(MethodReference m)

getUseOfStringParameter

public int getUseOfStringParameter(SSAAbstractInvokeInstruction call)

getCalleeTarget

public Context getCalleeTarget(CGNode caller,
 CallSiteReference site,
 IMethod callee,
 InstanceKey[] receiver)

If the CallSiteReference invokes Class.forName(s) and s is a string constant, return a JavaTypeContext representing the type named by s, if we can resolve it in the IClassHierarchy.

Specified by:

getCalleeTarget in interface ContextSelector

Parameters:

caller - the node containing the call site

site - description of the call site

receiver - the abstract objects (InstanceKeys) of parameters of interest to the selector

Returns:

the Context in which the callee should be evaluated, or null if no information is available.

getRelevantParameters

public IntSet getRelevantParameters(CGNode caller,
 CallSiteReference site)

Description copied from interface: ContextSelector

Given a calling node and a call site, return the set of parameters based on which this selector may choose to specialize contexts.

Specified by:

getRelevantParameters in interface ContextSelector

Parameters:

caller - the calling node

site - the specific call site

Returns:

the set of parameters of interest