at.dms.kjc.slicegraph
Class SimpleSlice

java.lang.Object
  at.dms.kjc.slicegraph.Slice
      at.dms.kjc.slicegraph.SimpleSlice

public class SimpleSlice
extends Slice

A SimpleSlice is a Slice with exactly one FilterSliceNode.

Author:

dimock

Field Summary

protected FilterSliceNode

body

Fields inherited from class at.dms.kjc.slicegraph.Slice

filterNodes, head, len, tail

Constructor Summary

SimpleSlice(InputSliceNode head)

SimpleSlice(InputSliceNode head, FilterSliceNode body, OutputSliceNode tail)
Constructor: creates a slice with one filter and sets previous parent and next links the supplied InputSliceNode, FilterSliceNode, and OutputSliceNode.

SimpleSlice(SliceNode node)

Method Summary

int	finish() Not needed for SimpleSlice, kept as a sanity check.
FilterSliceNode	getBody() Preferred way to access body of a SimpleSlice.
List<FilterSliceNode>	getFilterNodes() For SimpleSlice: call getBody() instead.
int	getNumFilters() Should not need to be called for SimpleSlice: always 1.
void	setBody(FilterSliceNode body) Set the body.

Methods inherited from class at.dms.kjc.slicegraph.Slice

getDependencies, getHead, getIdent, getTail, setHead, setTail, size, toString

Methods inherited from class java.lang.Object

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

Field Detail

body

protected FilterSliceNode body

Constructor Detail

SimpleSlice

public SimpleSlice(InputSliceNode head,
                   FilterSliceNode body,
                   OutputSliceNode tail)

Constructor: creates a slice with one filter and sets previous parent and next links the supplied InputSliceNode, FilterSliceNode, and OutputSliceNode.
One of head, body, tail must be non-null. If body is null, then a FilterSliceNode for the body must be reachable from the head or the tail. If head is null and no InputSliceNode is connected to body, then a default InputSliceNode is generated. If tail is null and no OutputSliceNode is connected to body, then a default OutputSliceNode is created.

Parameters:

head - InputSliceNode at head of slice

body - FilterSliceNode in simple slice.

tail - OutputSliceNode at tail of slice.

SimpleSlice

public SimpleSlice(InputSliceNode head)

Parameters:

head -

SimpleSlice

public SimpleSlice(SliceNode node)

Parameters:

node -

Method Detail

finish

public int finish()

Not needed for SimpleSlice, kept as a sanity check.

Overrides:

finish in class Slice

Returns:

The number of FilterSliceNodes.

getNumFilters

public int getNumFilters()

Should not need to be called for SimpleSlice: always 1.

Overrides:

getNumFilters in class Slice

getFilterNodes

public List<FilterSliceNode> getFilterNodes()

For SimpleSlice: call getBody() instead. For compatability with Slice, returns a one-element list of FilterSliceNode.

Overrides:

getFilterNodes in class Slice

Returns:

(singleton) list the filter slice nodes, in data flow order, unmodifiable.

getBody

public FilterSliceNode getBody()

Preferred way to access body of a SimpleSlice.

Returns:

the FilterSliceNode

setBody

public void setBody(FilterSliceNode body)

Set the body. Updates parent pointer in the body, but not the previous or next pointers.

Parameters:

body - a FilterSliceNode.