com.ibm.wala.ssa
Class SSALoadClassInstruction

java.lang.Object
  com.ibm.wala.ssa.SSAInstruction
      com.ibm.wala.ssa.SSALoadClassInstruction

All Implemented Interfaces:

IInstruction

public class SSALoadClassInstruction
extends SSAInstruction

Nested Class Summary

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

SSAInstruction.IVisitor, SSAInstruction.Visitor

Constructor Summary

SSALoadClassInstruction(int lval, TypeReference typeRef)

Method Summary

SSAInstruction	copyForSSA(int[] defs, int[] uses) This method is meant to be used during SSA conversion for an IR that is not in SSA form.
int	getDef()
int	getDef(int i) Return the ith def
java.util.Collection<TypeReference>	getExceptionTypes() This method should never return null.
TypeReference	getLoadedClass()
int	getNumberOfDefs()
int	hashCode()
boolean	isFallThrough()
boolean	isPEI() PEI == "Potentially excepting instruction"
java.lang.String	toString(SymbolTable symbolTable)
void	visit(SSAInstruction.IVisitor v) Apply an IVisitor to this instruction.

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

equals, getNumberOfUses, getUse, getValueString, hasDef, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SSALoadClassInstruction

public SSALoadClassInstruction(int lval,
                               TypeReference typeRef)

Method Detail

copyForSSA

public SSAInstruction copyForSSA(int[] defs,
                                 int[] uses)

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: this is kind of arcane? Move this out into CAst?

Specified by:

copyForSSA in class SSAInstruction

toString

public java.lang.String toString(SymbolTable symbolTable)

Specified by:

toString in class SSAInstruction

visit

public void visit(SSAInstruction.IVisitor v)

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

hashCode

public int hashCode()

Specified by:

hashCode in class SSAInstruction

isPEI

public boolean isPEI()

Description copied from interface: IInstruction

PEI == "Potentially excepting instruction"

Specified by:

isPEI in interface IInstruction

Overrides:

isPEI in class SSAInstruction

Returns:

true iff this instruction may throw an exception.

getExceptionTypes

public java.util.Collection<TypeReference> getExceptionTypes()

Description copied from class: SSAInstruction

This method should never return null.

Specified by:

getExceptionTypes in class SSAInstruction

Returns:

the set of exception types that an instruction might throw ... disregarding athrows and invokes.

getDef

public int getDef()

Overrides:

getDef in class SSAInstruction

getDef

public int getDef(int i)

Description copied from class: SSAInstruction

Return the ith def

Overrides:

getDef in class SSAInstruction

Parameters:

i - number of the def, starting at 0.

getNumberOfDefs

public int getNumberOfDefs()

Overrides:

getNumberOfDefs in class SSAInstruction

isFallThrough

public boolean isFallThrough()

Specified by:

isFallThrough in class SSAInstruction

Returns:

true iff this instruction may fall through to the next

getLoadedClass

public TypeReference getLoadedClass()