Class AbstractReflectiveGet

java.lang.Object

com.ibm.wala.ssa.SSAInstruction

com.ibm.wala.ssa.ReflectiveMemberAccess

com.ibm.wala.cast.ir.ssa.AbstractReflectiveGet

Direct Known Subclasses:

AstPropertyRead

public abstract class AbstractReflectiveGet
extends ReflectiveMemberAccess

This abstract class represents field (a.k.a property) reads in which the field name is not a constant, but rather a computed value. This is common in scripting languages, and so this base class is shared across all languages that need such accesses.

Author:

Julian Dolby (dolby@us.ibm.com)

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 ReflectiveMemberAccess

memberRef, objectRef

Modifier and Type	Field	Description
protected final int	memberRef
protected final int	objectRef

Fields inherited from class SSAInstruction

NO_INDEX

Modifier and Type	Field	Description
static final int	NO_INDEX

Constructor Summary

Constructors

Constructor	Description
AbstractReflectiveGet(int iindex, int result, int objectRef, int memberRef)

Method Summary

Modifier and Type	Method	Description
int	getDef()
int	getDef(int i)	Return the ith def
int	getNumberOfDefs()
int	getNumberOfUses()
boolean	hasDef()	Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g.
String	toString(SymbolTable symbolTable)

Methods inherited from class ReflectiveMemberAccess

getMemberRef, getObjectRef, getUse, hashCode, isFallThrough

Modifier and Type	Method	Description
int	getMemberRef()
int	getObjectRef()
int	getUse(int j)
int	hashCode()
boolean	isFallThrough()

Methods inherited from class SSAInstruction

copyForSSA, equals, getExceptionTypes, getValueString, iIndex, isPEI, setInstructionIndex, 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.
Collection<TypeReference>	getExceptionTypes()	This method should never return null.
protected String	getValueString(SymbolTable symbolTable, int valueNumber)
int	iIndex()
boolean	isPEI()
void	setInstructionIndex(int instructionIndex)
String	toString()
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

Constructor Details

AbstractReflectiveGet

public AbstractReflectiveGet(int iindex,
 int result,
 int objectRef,
 int memberRef)

Method Details

toString

public String toString(SymbolTable symbolTable)

Overrides:

toString in class ReflectiveMemberAccess

hasDef

public boolean hasDef()

Description copied from class: SSAInstruction

Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g. for invoke instructions).

Overrides:

hasDef in class SSAInstruction

Returns:

true if the instruction does define a proper value.

See Also:

• SSAInstruction.getDef()

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.

getNumberOfUses

public int getNumberOfUses()

Overrides:

getNumberOfUses in class SSAInstruction

See Also:

• SSAInstruction.getNumberOfUses()

getNumberOfDefs

public int getNumberOfDefs()

Overrides:

getNumberOfDefs in class SSAInstruction