Package org.apache.bcel.verifier.statics

Class Pass3aVerifier.InstOperandConstraintVisitor

java.lang.Object

org.apache.bcel.generic.EmptyVisitor

org.apache.bcel.verifier.statics.Pass3aVerifier.InstOperandConstraintVisitor

All Implemented Interfaces:

Visitor

Enclosing class:

Pass3aVerifier

private class Pass3aVerifier.InstOperandConstraintVisitor
extends EmptyVisitor

This visitor class does the actual checking for the instruction operand's constraints.

Field Summary

Fields

Modifier and Type	Field	Description
private final ConstantPoolGen	constantPoolGen	The ConstantPoolGen instance this Visitor operates on.

Constructor Summary

Constructors

Constructor	Description
InstOperandConstraintVisitor(ConstantPoolGen constantPoolGen)	The only Constructor.

Method Summary

Modifier and Type	Method	Description
private void	constraintViolated(Instruction i, String message)	A utility method to always raise an exeption.
private Method	getMethod(JavaClass jc, InvokeInstruction invoke)	Looks for the method referenced by the given invoke instruction in the given class.
private Method	getMethodRecursive(JavaClass jc, InvokeInstruction invoke)	Looks for the method referenced by the given invoke instruction in the given class or its super classes and super interfaces.
private ObjectType	getObjectType(FieldInstruction o)
private void	indexValid(Instruction i, int idx)	A utility method to raise an exception if the index is not a valid constant pool index.
private int	max_locals()	Utility method to return the max_locals value of the method verified by the surrounding Pass3aVerifier instance.
private boolean	objarrayequals(Object[] o, Object[] p)	A utility method like equals(Object) for arrays.
void	visitALOAD(ALOAD o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitANEWARRAY(ANEWARRAY o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitASTORE(ASTORE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitCHECKCAST(CHECKCAST o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitDLOAD(DLOAD o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitDSTORE(DSTORE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitFieldInstruction(FieldInstruction o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitFLOAD(FLOAD o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitFSTORE(FSTORE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitGETSTATIC(GETSTATIC o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitIINC(IINC o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitILOAD(ILOAD o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINSTANCEOF(INSTANCEOF o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINVOKEDYNAMIC(INVOKEDYNAMIC o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitInvokeInstruction(InvokeInstruction o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINVOKEINTERFACE(INVOKEINTERFACE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINVOKESPECIAL(INVOKESPECIAL o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINVOKESTATIC(INVOKESTATIC o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitINVOKEVIRTUAL(INVOKEVIRTUAL o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitISTORE(ISTORE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitLDC(LDC ldc)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitLDC2_W(LDC2_W o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitLLOAD(LLOAD o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitLoadClass(LoadClass loadClass)	Assures the generic preconditions of a LoadClass instance.
void	visitLOOKUPSWITCH(LOOKUPSWITCH o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitLSTORE(LSTORE o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitMULTIANEWARRAY(MULTIANEWARRAY o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitNEW(NEW o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitNEWARRAY(NEWARRAY o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitPUTSTATIC(PUTSTATIC o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitRET(RET o)	Checks if the constraints of operands of the said instruction(s) are satisfied.
void	visitTABLESWITCH(TABLESWITCH o)	Checks if the constraints of operands of the said instruction(s) are satisfied.

Methods inherited from class org.apache.bcel.generic.EmptyVisitor

visitAALOAD, visitAASTORE, visitACONST_NULL, visitAllocationInstruction, visitARETURN, visitArithmeticInstruction, visitArrayInstruction, visitARRAYLENGTH, visitATHROW, visitBALOAD, visitBASTORE, visitBIPUSH, visitBranchInstruction, visitBREAKPOINT, visitCALOAD, visitCASTORE, visitConstantPushInstruction, visitConversionInstruction, visitCPInstruction, visitD2F, visitD2I, visitD2L, visitDADD, visitDALOAD, visitDASTORE, visitDCMPG, visitDCMPL, visitDCONST, visitDDIV, visitDMUL, visitDNEG, visitDREM, visitDRETURN, visitDSUB, visitDUP, visitDUP_X1, visitDUP_X2, visitDUP2, visitDUP2_X1, visitDUP2_X2, visitExceptionThrower, visitF2D, visitF2I, visitF2L, visitFADD, visitFALOAD, visitFASTORE, visitFCMPG, visitFCMPL, visitFCONST, visitFDIV, visitFieldOrMethod, visitFMUL, visitFNEG, visitFREM, visitFRETURN, visitFSUB, visitGETFIELD, visitGOTO, visitGOTO_W, 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, visitIMPDEP1, visitIMPDEP2, visitIMUL, visitINEG, visitIOR, visitIREM, visitIRETURN, visitISHL, visitISHR, visitISUB, visitIUSHR, visitIXOR, visitJSR, visitJSR_W, visitJsrInstruction, visitL2D, visitL2F, visitL2I, visitLADD, visitLALOAD, visitLAND, visitLASTORE, visitLCMP, visitLCONST, visitLDIV, visitLMUL, visitLNEG, visitLoadInstruction, visitLocalVariableInstruction, visitLOR, visitLREM, visitLRETURN, visitLSHL, visitLSHR, visitLSUB, visitLUSHR, visitLXOR, visitMONITORENTER, visitMONITOREXIT, visitNOP, visitPOP, visitPOP2, visitPopInstruction, visitPushInstruction, visitPUTFIELD, visitRETURN, visitReturnInstruction, visitSALOAD, visitSASTORE, visitSelect, visitSIPUSH, visitStackConsumer, visitStackInstruction, visitStackProducer, visitStoreInstruction, visitSWAP, visitTypedInstruction, visitUnconditionalBranch, visitVariableLengthInstruction

Methods inherited from class java.lang.Object

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

Field Details

constantPoolGen

private final ConstantPoolGen constantPoolGen

The ConstantPoolGen instance this Visitor operates on.

Constructor Details

InstOperandConstraintVisitor

InstOperandConstraintVisitor(ConstantPoolGen constantPoolGen)

The only Constructor.

Method Details

max_locals

private int max_locals()

Utility method to return the max_locals value of the method verified by the surrounding Pass3aVerifier instance.

constraintViolated

private void constraintViolated(Instruction i,
 String message)

A utility method to always raise an exeption.

indexValid

private void indexValid(Instruction i,
 int idx)

A utility method to raise an exception if the index is not a valid constant pool index.

visitLoadClass

public void visitLoadClass(LoadClass loadClass)

Assures the generic preconditions of a LoadClass instance. The referenced class is loaded and pass2-verified.

Specified by:

visitLoadClass in interface Visitor

Overrides:

visitLoadClass in class EmptyVisitor

visitLDC

public void visitLDC(LDC ldc)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitLDC in interface Visitor

Overrides:

visitLDC in class EmptyVisitor

visitLDC2_W

public void visitLDC2_W(LDC2_W o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitLDC2_W in interface Visitor

Overrides:

visitLDC2_W in class EmptyVisitor

getObjectType

private ObjectType getObjectType(FieldInstruction o)

visitFieldInstruction

public void visitFieldInstruction(FieldInstruction o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitFieldInstruction in interface Visitor

Overrides:

visitFieldInstruction in class EmptyVisitor

visitInvokeInstruction

public void visitInvokeInstruction(InvokeInstruction o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitInvokeInstruction in interface Visitor

Overrides:

visitInvokeInstruction in class EmptyVisitor

visitINSTANCEOF

public void visitINSTANCEOF(INSTANCEOF o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINSTANCEOF in interface Visitor

Overrides:

visitINSTANCEOF in class EmptyVisitor

visitCHECKCAST

public void visitCHECKCAST(CHECKCAST o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitCHECKCAST in interface Visitor

Overrides:

visitCHECKCAST in class EmptyVisitor

visitNEW

public void visitNEW(NEW o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitNEW in interface Visitor

Overrides:

visitNEW in class EmptyVisitor

visitMULTIANEWARRAY

public void visitMULTIANEWARRAY(MULTIANEWARRAY o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitMULTIANEWARRAY in interface Visitor

Overrides:

visitMULTIANEWARRAY in class EmptyVisitor

visitANEWARRAY

public void visitANEWARRAY(ANEWARRAY o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitANEWARRAY in interface Visitor

Overrides:

visitANEWARRAY in class EmptyVisitor

visitNEWARRAY

public void visitNEWARRAY(NEWARRAY o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitNEWARRAY in interface Visitor

Overrides:

visitNEWARRAY in class EmptyVisitor

visitILOAD

public void visitILOAD(ILOAD o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitILOAD in interface Visitor

Overrides:

visitILOAD in class EmptyVisitor

visitFLOAD

public void visitFLOAD(FLOAD o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitFLOAD in interface Visitor

Overrides:

visitFLOAD in class EmptyVisitor

visitALOAD

public void visitALOAD(ALOAD o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitALOAD in interface Visitor

Overrides:

visitALOAD in class EmptyVisitor

visitISTORE

public void visitISTORE(ISTORE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitISTORE in interface Visitor

Overrides:

visitISTORE in class EmptyVisitor

visitFSTORE

public void visitFSTORE(FSTORE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitFSTORE in interface Visitor

Overrides:

visitFSTORE in class EmptyVisitor

visitASTORE

public void visitASTORE(ASTORE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitASTORE in interface Visitor

Overrides:

visitASTORE in class EmptyVisitor

visitIINC

public void visitIINC(IINC o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitIINC in interface Visitor

Overrides:

visitIINC in class EmptyVisitor

visitRET

public void visitRET(RET o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitRET in interface Visitor

Overrides:

visitRET in class EmptyVisitor

visitLLOAD

public void visitLLOAD(LLOAD o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitLLOAD in interface Visitor

Overrides:

visitLLOAD in class EmptyVisitor

visitDLOAD

public void visitDLOAD(DLOAD o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitDLOAD in interface Visitor

Overrides:

visitDLOAD in class EmptyVisitor

visitLSTORE

public void visitLSTORE(LSTORE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitLSTORE in interface Visitor

Overrides:

visitLSTORE in class EmptyVisitor

visitDSTORE

public void visitDSTORE(DSTORE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitDSTORE in interface Visitor

Overrides:

visitDSTORE in class EmptyVisitor

visitLOOKUPSWITCH

public void visitLOOKUPSWITCH(LOOKUPSWITCH o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitLOOKUPSWITCH in interface Visitor

Overrides:

visitLOOKUPSWITCH in class EmptyVisitor

visitTABLESWITCH

public void visitTABLESWITCH(TABLESWITCH o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitTABLESWITCH in interface Visitor

Overrides:

visitTABLESWITCH in class EmptyVisitor

visitPUTSTATIC

public void visitPUTSTATIC(PUTSTATIC o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitPUTSTATIC in interface Visitor

Overrides:

visitPUTSTATIC in class EmptyVisitor

visitGETSTATIC

public void visitGETSTATIC(GETSTATIC o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitGETSTATIC in interface Visitor

Overrides:

visitGETSTATIC in class EmptyVisitor

visitINVOKEDYNAMIC

public void visitINVOKEDYNAMIC(INVOKEDYNAMIC o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINVOKEDYNAMIC in interface Visitor

Overrides:

visitINVOKEDYNAMIC in class EmptyVisitor

visitINVOKEINTERFACE

public void visitINVOKEINTERFACE(INVOKEINTERFACE o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINVOKEINTERFACE in interface Visitor

Overrides:

visitINVOKEINTERFACE in class EmptyVisitor

getMethodRecursive

private Method getMethodRecursive(JavaClass jc,
 InvokeInstruction invoke)
                           throws ClassNotFoundException

Looks for the method referenced by the given invoke instruction in the given class or its super classes and super interfaces.

Parameters:

jc - the class that defines the referenced method

invoke - the instruction that references the method

Returns:

the referenced method or null if not found.

Throws:

ClassNotFoundException

getMethod

private Method getMethod(JavaClass jc,
 InvokeInstruction invoke)

Looks for the method referenced by the given invoke instruction in the given class.

Parameters:

jc - the class that defines the referenced method

invoke - the instruction that references the method

Returns:

the referenced method or null if not found.

visitINVOKESPECIAL

public void visitINVOKESPECIAL(INVOKESPECIAL o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINVOKESPECIAL in interface Visitor

Overrides:

visitINVOKESPECIAL in class EmptyVisitor

visitINVOKESTATIC

public void visitINVOKESTATIC(INVOKESTATIC o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINVOKESTATIC in interface Visitor

Overrides:

visitINVOKESTATIC in class EmptyVisitor

visitINVOKEVIRTUAL

public void visitINVOKEVIRTUAL(INVOKEVIRTUAL o)

Checks if the constraints of operands of the said instruction(s) are satisfied.

Specified by:

visitINVOKEVIRTUAL in interface Visitor

Overrides:

visitINVOKEVIRTUAL in class EmptyVisitor

objarrayequals

private boolean objarrayequals(Object[] o,
 Object[] p)

A utility method like equals(Object) for arrays. The equality of the elements is based on their equals(Object) method instead of their object identity.