Package com.ibm.wala.ipa.cfg.exceptionpruning.filter

Class NullPointerExceptionFilter

java.lang.Object

com.ibm.wala.ipa.cfg.exceptionpruning.filter.NullPointerExceptionFilter

All Implemented Interfaces:

ExceptionFilter<SSAInstruction>

public class NullPointerExceptionFilter
extends Object
implements ExceptionFilter<SSAInstruction>

Adapter for IntraproceduralNullPointerAnalysis. This filter is filtering NullPointerException, which can not occur.

Author:

Stephan Gocht <stephan@gobro.de>

Constructor Summary

Constructors

Constructor	Description
NullPointerExceptionFilter(IntraproceduralNullPointerAnalysis analysis)

Method Summary

Modifier and Type	Method	Description
boolean	alwaysThrowsException(SSAInstruction instruction)
Collection<FilteredException>	filteredExceptions(SSAInstruction instruction)

Methods inherited from class java.lang.Object

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

Constructor Details

NullPointerExceptionFilter

public NullPointerExceptionFilter(IntraproceduralNullPointerAnalysis analysis)

Method Details

alwaysThrowsException

public boolean alwaysThrowsException(SSAInstruction instruction)

Specified by:

alwaysThrowsException in interface ExceptionFilter<SSAInstruction>

Returns:

if the instruction does always throw an exception

filteredExceptions

public Collection<FilteredException> filteredExceptions(SSAInstruction instruction)

Specified by:

filteredExceptions in interface ExceptionFilter<SSAInstruction>

Returns:

a list of exceptions, which have to be filtered for the given instruction