Class SSAArrayReferenceInstruction

java.lang.Object

com.ibm.wala.ssa.SSAInstruction

com.ibm.wala.ssa.SSAArrayReferenceInstruction

Direct Known Subclasses:

SSAArrayLoadInstruction, SSAArrayStoreInstruction

public abstract class SSAArrayReferenceInstruction
extends SSAInstruction

Abstract base class for instructions that load or store from array contents.

Nested Class Summary

Nested classes/interfaces inherited from class SSAInstruction

SSAInstruction.IVisitor, SSAInstruction.Visitor

Modifier and Type	Class	Description
static interface	SSAInstruction.IVisitor	This interface is used by Instruction.visit to dispatch based on the instruction type.
static class	SSAInstruction.Visitor	A base visitor implementation that does nothing.

Field Summary

Fields inherited from class SSAInstruction

NO_INDEX

Modifier and Type	Field	Description
static final int	NO_INDEX

Method Summary

Modifier and Type	Method	Description
int	getArrayRef()	Return the value number of the array reference.
TypeReference	getElementType()
int	getIndex()	Return the value number of the index of the array reference.
int	getNumberOfUses()
int	getUse(int j)
boolean	isFallThrough()
boolean	isPEI()
boolean	typeIsPrimitive()

Methods inherited from class SSAInstruction

copyForSSA, equals, getDef, getDef, getExceptionTypes, getNumberOfDefs, getValueString, hasDef, hashCode, iIndex, setInstructionIndex, toString, toString, visit

Modifier and Type	Method	Description
abstract 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.
final boolean	equals(Object obj)	We assume these instructions are canonical and managed by a governing IR object.
int	getDef()
int	getDef(int i)	Return the ith def
Collection<TypeReference>	getExceptionTypes()	This method should never return null.
int	getNumberOfDefs()
protected String	getValueString(SymbolTable symbolTable, int valueNumber)
boolean	hasDef()	Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g.
abstract int	hashCode()
int	iIndex()
void	setInstructionIndex(int instructionIndex)
String	toString()
abstract String	toString(SymbolTable symbolTable)
abstract void	visit(SSAInstruction.IVisitor v)	Apply an IVisitor to this instruction.

Methods inherited from class Object

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

Method Details

getNumberOfUses

public int getNumberOfUses()

Overrides:

getNumberOfUses in class SSAInstruction

getUse

public int getUse(int j)

Overrides:

getUse in class SSAInstruction

Returns:

value number representing the jth use in this instruction. -1 means TOP (i.e., the value doesn't matter)

getArrayRef

public int getArrayRef()

Return the value number of the array reference.

getIndex

public int getIndex()

Return the value number of the index of the array reference.

getElementType

public TypeReference getElementType()

typeIsPrimitive

public boolean typeIsPrimitive()

Returns:

true iff this represents an array access of a primitive type element

isPEI

public boolean isPEI()

Overrides:

isPEI in class SSAInstruction

Returns:

true iff this instruction may throw an exception.

isFallThrough

public boolean isFallThrough()

Specified by:

isFallThrough in class SSAInstruction

Returns:

true iff this instruction may fall through to the next