soot.jimple.toolkits.annotation.purity
Class PurityIntraproceduralAnalysis

java.lang.Object
  soot.toolkits.scalar.AbstractFlowAnalysis<N,A>
      soot.toolkits.scalar.FlowAnalysis<N,A>
          soot.toolkits.scalar.ForwardFlowAnalysis
              soot.jimple.toolkits.annotation.purity.PurityIntraproceduralAnalysis

public class PurityIntraproceduralAnalysis
extends ForwardFlowAnalysis

Intra-procedural purity-graph analysis. You must pass an AbstractInterproceduralAnalysis object so that the intraprocedural part can resolve the effect of method calls. This manipulates PurityGraphBox.

Field Summary

Fields inherited from class soot.toolkits.scalar.FlowAnalysis

filterUnitToAfterFlow, unitToAfterFlow

Fields inherited from class soot.toolkits.scalar.AbstractFlowAnalysis

filterUnitToBeforeFlow, graph, unitToBeforeFlow

Method Summary

protected void	copy(Object source, Object dest) Creates a copy of the source flow object in dest.
void	copyResult(Object dst) Put into dst the purity graph obtained by merging all purity graphs at the method return.
void	drawAsOneDot(String prefix, String name) Draw the result of the intra-procedural analysis as one big dot file, named className.methodName.dot, containing one purity graph for each statment in the method.
protected Object	entryInitialFlow() Returns the initial flow value for entry/exit graph nodes.
protected void	flowThrough(Object inValue, Object unit, Object outValue) Given the merge of the out sets, compute the in set for s (or in to out, depending on direction).
protected void	merge(Object in1, Object in2, Object out) Compute the merge of the in1 and in2 sets, putting the result into out.
protected Object	newInitialFlow() Returns the flow object corresponding to the initial values for each graph node.

Methods inherited from class soot.toolkits.scalar.ForwardFlowAnalysis

constructWorklist, doAnalysis, isForward

Methods inherited from class soot.toolkits.scalar.FlowAnalysis

constructOrderer, getFlowAfter

Methods inherited from class soot.toolkits.scalar.AbstractFlowAnalysis

getFlowBefore, merge, mergeInto, treatTrapHandlersAsEntries

Methods inherited from class java.lang.Object

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

Method Detail

newInitialFlow

protected Object newInitialFlow()

Description copied from class: AbstractFlowAnalysis

Returns the flow object corresponding to the initial values for each graph node.

Specified by:

newInitialFlow in class AbstractFlowAnalysis

entryInitialFlow

protected Object entryInitialFlow()

Description copied from class: AbstractFlowAnalysis

Returns the initial flow value for entry/exit graph nodes.

Specified by:

entryInitialFlow in class AbstractFlowAnalysis

merge

protected void merge(Object in1,
                     Object in2,
                     Object out)

Description copied from class: AbstractFlowAnalysis

Compute the merge of the in1 and in2 sets, putting the result into out. The behavior of this function depends on the implementation ( it may be necessary to check whether in1 and in2 are equal or aliased ). Used by the doAnalysis method.

Specified by:

merge in class AbstractFlowAnalysis

copy

protected void copy(Object source,
                    Object dest)

Description copied from class: AbstractFlowAnalysis

Creates a copy of the source flow object in dest.

Specified by:

copy in class AbstractFlowAnalysis

flowThrough

protected void flowThrough(Object inValue,
                           Object unit,
                           Object outValue)

Description copied from class: FlowAnalysis

Given the merge of the out sets, compute the in set for s (or in to out, depending on direction). This function often causes confusion, because the same interface is used for both forward and backward flow analyses. The first parameter is always the argument to the flow function (i.e. it is the "in" set in a forward analysis and the "out" set in a backward analysis), and the third parameter is always the result of the flow function (i.e. it is the "out" set in a forward analysis and the "in" set in a backward analysis).

Specified by:

flowThrough in class FlowAnalysis

drawAsOneDot

public void drawAsOneDot(String prefix,
                         String name)

Draw the result of the intra-procedural analysis as one big dot file, named className.methodName.dot, containing one purity graph for each statment in the method.

copyResult

public void copyResult(Object dst)

Put into dst the purity graph obtained by merging all purity graphs at the method return. It is a valid summary that can be used in methodCall if you do interprocedural analysis.