com.ibm.wala.cast.java.ssa
Class EnclosingObjectReference

java.lang.Object
  com.ibm.wala.ssa.SSAInstruction
      com.ibm.wala.cast.java.ssa.EnclosingObjectReference

All Implemented Interfaces:

IInstruction

public class EnclosingObjectReference
extends SSAInstruction

The CAst source language front end for Java has explicit support for lexicallly-enclosing objects, rather than compiling them away into extra fields and access-control thwarting accessor methods as is done in bytecode. This instruction represents a read of the object of the given type that lexically encloses its use value.

Nested Class Summary

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

SSAInstruction.IVisitor, SSAInstruction.Visitor

Constructor Summary

EnclosingObjectReference(int lval, TypeReference type)

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)
TypeReference	getEnclosingType()
java.util.Collection<TypeReference>	getExceptionTypes()
int	getNumberOfDefs()
boolean	hasDef() Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g.
int	hashCode()
boolean	isFallThrough()
java.lang.String	toString(SymbolTable symbolTable, ValueDecorator d) Method toString.
void	visit(SSAInstruction.IVisitor v) Apply an IVisitor to this instruction.

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

equals, getNumberOfUses, getUse, getValueString, isPEI, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

EnclosingObjectReference

public EnclosingObjectReference(int lval,
                                TypeReference type)

Method Detail

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.

getDef

public int getDef()

Overrides:

getDef in class SSAInstruction

getDef

public int getDef(int i)

Overrides:

getDef in class SSAInstruction

getNumberOfDefs

public int getNumberOfDefs()

Overrides:

getNumberOfDefs in class SSAInstruction

getEnclosingType

public TypeReference getEnclosingType()

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.

Specified by:

copyForSSA in class SSAInstruction

See Also:

SSAConversion

toString

public java.lang.String toString(SymbolTable symbolTable,
                                 ValueDecorator d)

Description copied from class: SSAInstruction

Method toString.

Specified by:

toString in class SSAInstruction

Returns:

Object

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

getExceptionTypes

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

Specified by:

getExceptionTypes in class SSAInstruction

Returns:

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

isFallThrough

public boolean isFallThrough()

Specified by:

isFallThrough in class SSAInstruction

Returns:

true iff this instruction may fall through to the next