com.oracle.truffle.api.frame

Class FrameSlot

java.lang.Object

com.oracle.truffle.api.frame.FrameSlot

All Implemented Interfaces:

Cloneable

public final class FrameSlot
extends Object
implements Cloneable

A slot in a Frame and FrameDescriptor that can store a value of a given type.

Since:

0.8 or earlier

Method Summary

Modifier and Type	Method and Description
FrameDescriptor	getFrameDescriptor() Frame descriptor this slot is associated with.
Object	getIdentifier() Identifier of the slot.
int	getIndex() Index of the slot in the FrameDescriptor.
Object	getInfo() Information about the slot.
FrameSlotKind	getKind() Kind of the slot.
void	setKind(FrameSlotKind kind) Changes the kind of this slot.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getIdentifier

public Object getIdentifier()

Identifier of the slot.

Returns:

value as specified in FrameDescriptor.addFrameSlot(java.lang.Object) parameter

Since:

0.8 or earlier

getInfo

public Object getInfo()

Information about the slot.

Returns:

value as specified as second parameter of FrameDescriptor.addFrameSlot(java.lang.Object, java.lang.Object, com.oracle.truffle.api.frame.FrameSlotKind)

Since:

0.8 or earlier

getIndex

public int getIndex()

Index of the slot in the FrameDescriptor.

Returns:

position of the slot computed after adding it.

Since:

0.8 or earlier

getKind

public FrameSlotKind getKind()

Kind of the slot. Specified either at creation time or updated via FrameSlot.setKind(com.oracle.truffle.api.frame.FrameSlotKind) method.

Returns:

current kind of this slot

Since:

0.8 or earlier

setKind

public void setKind(FrameSlotKind kind)

Changes the kind of this slot. Change of the slot kind is done on slow path and invalidates assumptions about version of the associated descriptor.

Parameters:

kind - new kind of the slot

Since:

0.8 or earlier

toString

public String toString()

Overrides:

toString in class Object

Since:

0.8 or earlier

getFrameDescriptor

public FrameDescriptor getFrameDescriptor()

Frame descriptor this slot is associated with.

Returns:

instance of descriptor that created the slot

Since:

0.8 or earlier