edu.umd.cs.findbugs.ba

Class ResourceValueFrameModelingVisitor

java.lang.Object

edu.umd.cs.findbugs.ba.AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

edu.umd.cs.findbugs.ba.ResourceValueFrameModelingVisitor

All Implemented Interfaces:

org.apache.bcel.generic.Visitor

Direct Known Subclasses:

StreamFrameModelingVisitor

public abstract class ResourceValueFrameModelingVisitor
extends AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

Field Summary

Fields inherited from class edu.umd.cs.findbugs.ba.AbstractFrameModelingVisitor

cpg

Constructor Summary

Constructors

Constructor and Description
ResourceValueFrameModelingVisitor(org.apache.bcel.generic.ConstantPoolGen cpg)

Method Summary

Modifier and Type	Method and Description
ResourceValue	getDefaultValue() Produce a "default" value.
protected boolean	instanceEscapes(org.apache.bcel.generic.InvokeInstruction inv, int instanceArgNum) Override this to check for methods that it is legal to pass the instance to without the instance escaping.
abstract void	transferInstruction(org.apache.bcel.generic.InstructionHandle handle, BasicBlock basicBlock) Subclasses must override this to model the effect of the given instruction on the current frame.
void	visitAASTORE(org.apache.bcel.generic.AASTORE arr)
void	visitARETURN(org.apache.bcel.generic.ARETURN ins)
void	visitCHECKCAST(org.apache.bcel.generic.CHECKCAST obj)
void	visitINVOKEINTERFACE(org.apache.bcel.generic.INVOKEINTERFACE inv)
void	visitINVOKESPECIAL(org.apache.bcel.generic.INVOKESPECIAL inv)
void	visitINVOKESTATIC(org.apache.bcel.generic.INVOKESTATIC inv)
void	visitINVOKEVIRTUAL(org.apache.bcel.generic.INVOKEVIRTUAL inv)
void	visitPUTFIELD(org.apache.bcel.generic.PUTFIELD putfield)
void	visitPUTSTATIC(org.apache.bcel.generic.PUTSTATIC putstatic)

Methods inherited from class edu.umd.cs.findbugs.ba.AbstractFrameModelingVisitor

analyzeInstruction, getCPG, getFrame, getLocation, getNumWordsConsumed, getNumWordsProduced, handleLoadInstruction, handleNormalInstruction, handleStoreInstruction, modelInstruction, modelNormalInstruction, setFrameAndLocation, visitAALOAD, visitACONST_NULL, visitAllocationInstruction, visitALOAD, visitANEWARRAY, visitArithmeticInstruction, visitArrayInstruction, visitARRAYLENGTH, visitASTORE, visitATHROW, visitBALOAD, visitBASTORE, visitBIPUSH, visitBranchInstruction, visitBREAKPOINT, visitCALOAD, visitCASTORE, visitConstantPushInstruction, visitConversionInstruction, visitConversionInstruction2, visitCPInstruction, visitD2F, visitD2I, visitD2L, visitDADD, visitDALOAD, visitDASTORE, visitDCMPG, visitDCMPL, visitDCONST, visitDDIV, visitDLOAD, visitDMUL, visitDNEG, visitDREM, visitDRETURN, visitDSTORE, visitDSUB, visitDUP_X1, visitDUP_X2, visitDUP, visitDUP2_X1, visitDUP2_X2, visitDUP2, visitExceptionThrower, visitF2D, visitF2I, visitF2L, visitFADD, visitFALOAD, visitFASTORE, visitFCMPG, visitFCMPL, visitFCONST, visitFDIV, visitFieldInstruction, visitFieldOrMethod, visitFLOAD, visitFMUL, visitFNEG, visitFREM, visitFRETURN, visitFSTORE, visitFSUB, visitGETFIELD, visitGETSTATIC, visitGOTO_W, visitGOTO, visitGotoInstruction, visitI2B, visitI2C, visitI2D, visitI2F, visitI2L, visitI2S, visitIADD, visitIALOAD, visitIAND, visitIASTORE, visitICONST, visitIDIV, visitIF_ACMPEQ, visitIF_ACMPNE, visitIF_ICMPEQ, visitIF_ICMPGE, visitIF_ICMPGT, visitIF_ICMPLE, visitIF_ICMPLT, visitIF_ICMPNE, visitIFEQ, visitIFGE, visitIFGT, visitIfInstruction, visitIFLE, visitIFLT, visitIFNE, visitIFNONNULL, visitIFNULL, visitIINC, visitILOAD, visitIMPDEP1, visitIMPDEP2, visitIMUL, visitINEG, visitINSTANCEOF, visitINVOKEDYNAMIC, visitInvokeInstruction, visitIOR, visitIREM, visitIRETURN, visitISHL, visitISHR, visitISTORE, visitISUB, visitIUSHR, visitIXOR, visitJSR_W, visitJSR, visitJsrInstruction, visitL2D, visitL2F, visitL2I, visitLADD, visitLALOAD, visitLAND, visitLASTORE, visitLCMP, visitLCONST, visitLDC, visitLDC2_W, visitLDIV, visitLLOAD, visitLMUL, visitLNEG, visitLoadClass, visitLoadInstruction, visitLocalVariableInstruction, visitLOOKUPSWITCH, visitLOR, visitLREM, visitLRETURN, visitLSHL, visitLSHR, visitLSTORE, visitLSUB, visitLUSHR, visitLXOR, visitMONITORENTER, visitMONITOREXIT, visitMULTIANEWARRAY, visitNEW, visitNEWARRAY, visitNONNULL2Z, visitNOP, visitNULL2Z, visitPOP, visitPOP2, visitPopInstruction, visitPushInstruction, visitRET, visitRETURN, visitReturnInstruction, visitSALOAD, visitSASTORE, visitSelect, visitSIPUSH, visitStackConsumer, visitStackInstruction, visitStackProducer, visitStoreInstruction, visitSWAP, visitTABLESWITCH, visitTypedInstruction, visitUnconditionalBranch, visitVariableLengthInstruction

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceValueFrameModelingVisitor

public ResourceValueFrameModelingVisitor(org.apache.bcel.generic.ConstantPoolGen cpg)

Method Detail

getDefaultValue

public ResourceValue getDefaultValue()

Description copied from class: AbstractFrameModelingVisitor

Produce a "default" value. This is what is pushed onto the stack by the handleNormalInstruction() method for instructions which produce stack values.

Specified by:

getDefaultValue in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

transferInstruction

public abstract void transferInstruction(org.apache.bcel.generic.InstructionHandle handle,
                                         BasicBlock basicBlock)
                                  throws DataflowAnalysisException

Subclasses must override this to model the effect of the given instruction on the current frame.

Throws:

DataflowAnalysisException

visitPUTFIELD

public void visitPUTFIELD(org.apache.bcel.generic.PUTFIELD putfield)

Specified by:

visitPUTFIELD in interface org.apache.bcel.generic.Visitor

Overrides:

visitPUTFIELD in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitAASTORE

public void visitAASTORE(org.apache.bcel.generic.AASTORE arr)

Specified by:

visitAASTORE in interface org.apache.bcel.generic.Visitor

Overrides:

visitAASTORE in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitPUTSTATIC

public void visitPUTSTATIC(org.apache.bcel.generic.PUTSTATIC putstatic)

Specified by:

visitPUTSTATIC in interface org.apache.bcel.generic.Visitor

Overrides:

visitPUTSTATIC in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

instanceEscapes

protected boolean instanceEscapes(org.apache.bcel.generic.InvokeInstruction inv,
                                  int instanceArgNum)

Override this to check for methods that it is legal to pass the instance to without the instance escaping. By default, we consider all methods to be possible escape routes.

Parameters:

inv - the InvokeInstruction to which the resource instance is passed as an argument

instanceArgNum - the first argument the instance is passed in

visitCHECKCAST

public void visitCHECKCAST(org.apache.bcel.generic.CHECKCAST obj)

Specified by:

visitCHECKCAST in interface org.apache.bcel.generic.Visitor

Overrides:

visitCHECKCAST in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitINVOKEVIRTUAL

public void visitINVOKEVIRTUAL(org.apache.bcel.generic.INVOKEVIRTUAL inv)

Specified by:

visitINVOKEVIRTUAL in interface org.apache.bcel.generic.Visitor

Overrides:

visitINVOKEVIRTUAL in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitINVOKEINTERFACE

public void visitINVOKEINTERFACE(org.apache.bcel.generic.INVOKEINTERFACE inv)

Specified by:

visitINVOKEINTERFACE in interface org.apache.bcel.generic.Visitor

Overrides:

visitINVOKEINTERFACE in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitINVOKESPECIAL

public void visitINVOKESPECIAL(org.apache.bcel.generic.INVOKESPECIAL inv)

Specified by:

visitINVOKESPECIAL in interface org.apache.bcel.generic.Visitor

Overrides:

visitINVOKESPECIAL in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitINVOKESTATIC

public void visitINVOKESTATIC(org.apache.bcel.generic.INVOKESTATIC inv)

Specified by:

visitINVOKESTATIC in interface org.apache.bcel.generic.Visitor

Overrides:

visitINVOKESTATIC in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>

visitARETURN

public void visitARETURN(org.apache.bcel.generic.ARETURN ins)

Specified by:

visitARETURN in interface org.apache.bcel.generic.Visitor

Overrides:

visitARETURN in class AbstractFrameModelingVisitor<ResourceValue,ResourceValueFrame>