FindBugs™ 1.3.9

edu.umd.cs.findbugs.ba.jsr305
Class ForwardTypeQualifierDataflowAnalysis

java.lang.Object
  extended by edu.umd.cs.findbugs.ba.BasicAbstractDataflowAnalysis<Fact>
      extended by edu.umd.cs.findbugs.ba.AbstractDataflowAnalysis<TypeQualifierValueSet>
          extended by edu.umd.cs.findbugs.ba.jsr305.TypeQualifierDataflowAnalysis
              extended by edu.umd.cs.findbugs.ba.jsr305.ForwardTypeQualifierDataflowAnalysis
All Implemented Interfaces:
DataflowAnalysis<TypeQualifierValueSet>

public class ForwardTypeQualifierDataflowAnalysis
extends TypeQualifierDataflowAnalysis

Forward type qualifier dataflow analysis.

Author:
David Hovemeyer

Field Summary
 
Fields inherited from class edu.umd.cs.findbugs.ba.jsr305.TypeQualifierDataflowAnalysis
cfg, cpg, typeQualifierValue, vnaDataflow, xmethod
 
Constructor Summary
ForwardTypeQualifierDataflowAnalysis(DepthFirstSearch dfs, XMethod xmethod, CFG cfg, ValueNumberDataflow vnaDataflow, org.apache.bcel.generic.ConstantPoolGen cpg, TypeQualifierValue typeQualifierValue)
          Constructor.
 
Method Summary
 BlockOrder getBlockOrder(CFG cfg)
          Return the BlockOrder specifying the order in which BasicBlocks should be visited in the main dataflow loop.
 boolean isForwards()
          Returns true if the analysis is forwards, false if backwards.
protected  void propagateAcrossPhiNode(TypeQualifierValueSet fact, ValueNumber sourceVN, ValueNumber targetVN)
           
 void registerSourceSinkLocations()
          This method must be called before the dataflow analysis is executed.
 
Methods inherited from class edu.umd.cs.findbugs.ba.jsr305.TypeQualifierDataflowAnalysis
copy, createFact, edgeTransfer, getSourceSinkInfoSet, initEntryFact, isFactValid, isTop, makeFactTop, meetInto, registerSourceSink, same, transferInstruction
 
Methods inherited from class edu.umd.cs.findbugs.ba.AbstractDataflowAnalysis
getFactAfterLocation, getFactAtLocation, transfer
 
Methods inherited from class edu.umd.cs.findbugs.ba.BasicAbstractDataflowAnalysis
factToString, finishIteration, getFactOnEdge, getLastUpdateTimestamp, getResultFact, getStartFact, resultFactIterator, setLastUpdateTimestamp, startIteration
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ForwardTypeQualifierDataflowAnalysis

public ForwardTypeQualifierDataflowAnalysis(DepthFirstSearch dfs,
                                            XMethod xmethod,
                                            CFG cfg,
                                            ValueNumberDataflow vnaDataflow,
                                            org.apache.bcel.generic.ConstantPoolGen cpg,
                                            TypeQualifierValue typeQualifierValue)
Constructor.

Parameters:
dfs - DepthFirstSearch on the analyzed method
xmethod - XMethod for the analyzed method
cfg - CFG of the analyzed method
vnaDataflow - ValueNumberDataflow on the analyzed method
cpg - ConstantPoolGen of the analyzed method
typeQualifierValue - TypeQualifierValue representing type qualifier the analysis should check
Method Detail

getBlockOrder

public BlockOrder getBlockOrder(CFG cfg)
Description copied from interface: DataflowAnalysis
Return the BlockOrder specifying the order in which BasicBlocks should be visited in the main dataflow loop.

Parameters:
cfg - the CFG upon which we're performing dataflow analysis

isForwards

public boolean isForwards()
Description copied from interface: DataflowAnalysis
Returns true if the analysis is forwards, false if backwards.


registerSourceSinkLocations

public void registerSourceSinkLocations()
                                 throws DataflowAnalysisException
Description copied from class: TypeQualifierDataflowAnalysis
This method must be called before the dataflow analysis is executed.

Specified by:
registerSourceSinkLocations in class TypeQualifierDataflowAnalysis
Throws:
DataflowAnalysisException

propagateAcrossPhiNode

protected void propagateAcrossPhiNode(TypeQualifierValueSet fact,
                                      ValueNumber sourceVN,
                                      ValueNumber targetVN)
Specified by:
propagateAcrossPhiNode in class TypeQualifierDataflowAnalysis

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