com.ibm.wala.ssa

Class SSAThrowInstruction

java.lang.Object

com.ibm.wala.ssa.SSAInstruction

com.ibm.wala.ssa.SSAAbstractThrowInstruction

com.ibm.wala.ssa.SSAThrowInstruction

public abstract class SSAThrowInstruction
extends SSAAbstractThrowInstruction

An instruction which unconditionally throws an exception

Nested Class Summary

Nested classes/interfaces inherited from class com.ibm.wala.ssa.SSAInstruction

SSAInstruction.IVisitor, SSAInstruction.Visitor

Field Summary

Fields inherited from class com.ibm.wala.ssa.SSAInstruction

NO_INDEX

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SSAThrowInstruction(int iindex, int exception)

Method Summary

Modifier and Type	Method and Description
SSAInstruction	copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses) This method is meant to be used during SSA conversion for an IR that is not in SSA form.
void	visit(SSAInstruction.IVisitor v) Apply an IVisitor to this instruction.

Methods inherited from class com.ibm.wala.ssa.SSAAbstractThrowInstruction

getException, getNumberOfUses, getUse, hashCode, isFallThrough, isPEI, toString

Methods inherited from class com.ibm.wala.ssa.SSAInstruction

equals, getDef, getDef, getExceptionTypes, getNumberOfDefs, getValueString, hasDef, iIndex, setInstructionIndex, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SSAThrowInstruction

protected SSAThrowInstruction(int iindex,
                              int exception)

Method Detail

copyForSSA

public SSAInstruction copyForSSA(SSAInstructionFactory insts,
                                 int[] defs,
                                 int[] uses)
                          throws java.lang.IllegalArgumentException

Description copied from class: SSAInstruction

This method is meant to be used during SSA conversion for an IR that is not in SSA form. It creates a new SSAInstruction of the same type as the receiver, with a combination of the receiver's uses and defs and those from the method parameters.

In particular, if the 'defs' parameter is null, then the new instruction has the same defs as the receiver. If 'defs' is not null, it must be an array with a size equal to the number of defs that the receiver instruction has. In this case, the new instruction has defs taken from the array. The uses of the new instruction work in the same way with the 'uses' parameter.

Note that this only applies to CAst-based IR translation, since Java bytecode-based IR generation uses a different SSA construction mechanism.

TODO: move this into the SSAInstructionFactory

Specified by:

copyForSSA in class SSAInstruction

Throws:

java.lang.IllegalArgumentException

visit

public void visit(SSAInstruction.IVisitor v)
           throws java.lang.NullPointerException

Description copied from class: SSAInstruction

Apply an IVisitor to this instruction. We invoke the appropriate IVisitor method according to the type of this instruction.

Specified by:

visit in class SSAInstruction

Throws:

java.lang.NullPointerException

See Also:

SSAInstruction.visit(IVisitor)