IGR.subgraph.SubGraph Class Reference

SubGraph. More...

Inherits object.

Public Member Functions
def	__init__
def	__str__
	Printable subgraph. More...
def	getOutputPort
	Get an output port of the subgraph. More...
def	getInputPort
	Gets an input port of the subgraph. More...
def	addNode
	Add a node to the node list of the subgraph. More...
def	isTrivial
	See if a graph can be reduced to a constant value. More...
def	reduce
	Attach a constant to a subgraph. More...
def	removeNode
	Remove a node. More...
def	replaceNode
	Replace a node. More...

Public Attributes
	name
	entry
	exit
	nodes
	value
	isFunc

Detailed Description

SubGraph.

An IGR subgraph is either a function body, or a part of the compound node.

Constructor & Destructor Documentation

def IGR.subgraph.SubGraph.__init__	(		self,
			entry,
			exit,
			name,
			isFunc
	)

Member Function Documentation

def IGR.subgraph.SubGraph.__str__

(

self

)

Printable subgraph.

def IGR.subgraph.SubGraph.getOutputPort	(		self,
			idx
	)

Get an output port of the subgraph.

This maps to the ports of the entry node.

This may seem counterintuitive, but this is seen from the perspective of the inside of the subgraph. In which case the output port is used to retrieve data from the subgraph.

def IGR.subgraph.SubGraph.getInputPort	(		self,
			idx
	)

Gets an input port of the subgraph.

This maps to the input of the return (exit) node.

Once again this is seen from the inside of the subgraph. If we want to add data to the subgraph, we try to return it to the outside world, which is done through the exit node.

def IGR.subgraph.SubGraph.addNode	(		self,
			node
	)

Add a node to the node list of the subgraph.

def IGR.subgraph.SubGraph.isTrivial

(

self

)

See if a graph can be reduced to a constant value.

def IGR.subgraph.SubGraph.reduce	(		self,
			value
	)

Attach a constant to a subgraph.

def IGR.subgraph.SubGraph.removeNode	(		self,
			node
	)

Remove a node.

This only removes the node from the node list. It does not clean up any edges possibly leading to the node.

It silently fails if the node does not exist.

def IGR.subgraph.SubGraph.replaceNode	(		self,
			node,
			new
	)

Replace a node.

This replaces a node in the node list of the subgraph by new. All of the in and output ports of the node are added to new.

Member Data Documentation

IGR.subgraph.SubGraph.name

IGR.subgraph.SubGraph.entry

IGR.subgraph.SubGraph.exit

IGR.subgraph.SubGraph.nodes

IGR.subgraph.SubGraph.value

IGR.subgraph.SubGraph.isFunc