com.sun.electric.tool.ncc.netlist

Class Subcircuit

java.lang.Object

com.sun.electric.tool.ncc.netlist.NetObject

com.sun.electric.tool.ncc.netlist.Part

com.sun.electric.tool.ncc.netlist.Subcircuit

All Implemented Interfaces:

NetObjReport.NetObjReportable, PartReport.PartReportable

public class Subcircuit
extends Part

A Cell instance that is being treated as a primitive circuit component during a hierarchical netlist comparison

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Subcircuit.SubcircuitPinType presume that no ports are interchangeable

Nested classes/interfaces inherited from class com.sun.electric.tool.ncc.netlist.NetObject

NetObject.Type

Field Summary

Fields inherited from class com.sun.electric.tool.ncc.netlist.Part

pins, TYPE_FIELD_WIDTH

Constructor Summary

Constructors

Constructor and Description
Subcircuit(NccNameProxy.PartNameProxy instName, SubcircuitInfo subcircuitInfo, Wire[] pins)

Method Summary

Modifier and Type	Method and Description
java.lang.String	connectionDescription(int maxCon) human readable description of things connected this NetObject
java.lang.String	connectionDescription(Wire w) comma separated list of pins connected to w
int	getHashFor(Wire w) Subcircuits can have tens of thousands of pins.
int[]	getPinCoeffs() Here is an accessor method for the coefficient array for this Part.
PinType	getPinTypeOfNthPin(int n)
java.lang.Integer	hashCodeForParallelMerge() I never parallel merge subcircuits so this really doesn't matter.
boolean	parallelMerge(Part p, NccOptions nccOpt) This method attempts to merge this Part in parallel with another Part
int	typeCode() returns a unique int value for each distinct Part type
java.lang.String	typeString() returns String describing Part's type
java.lang.String	valueDescription() Report the numeric values of this Part, for example: width, length, resistance.

Methods inherited from class com.sun.electric.tool.ncc.netlist.Part

checkMe, computeHashCode, getConnected, getLength, getName, getNameProxy, getNetObjType, getWidth, instanceDescription, isDeleted, isMos, isResistor, numDistinctWires, numPins, numPinsConnected, setDeleted, type

Methods inherited from class com.sun.electric.tool.ncc.netlist.NetObject

error, fullDescription, getCode, getParent, setParent, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.electric.tool.ncc.result.NetObjReport.NetObjReportable

fullDescription

Constructor Detail

Subcircuit

public Subcircuit(NccNameProxy.PartNameProxy instName,
                  SubcircuitInfo subcircuitInfo,
                  Wire[] pins)

Method Detail

valueDescription

public java.lang.String valueDescription()

Description copied from class: Part

Report the numeric values of this Part, for example: width, length, resistance.

Specified by:

valueDescription in class Part

Returns:

a String describing the Part's numeric values.

getPinCoeffs

public int[] getPinCoeffs()

Description copied from class: Part

Here is an accessor method for the coefficient array for this Part. The terminal coefficients are used to compute new hash codes.

Specified by:

getPinCoeffs in class Part

Returns:

the array of terminal coefficients for this Part

parallelMerge

public boolean parallelMerge(Part p,
                             NccOptions nccOpt)

Description copied from class: Part

This method attempts to merge this Part in parallel with another Part

Specified by:

parallelMerge in class Part

Parameters:

p - the other Part with which to merge

nccOpt - NccOptions. Used for size tolerance specification.

Returns:

true if merge was successful, false otherwise

hashCodeForParallelMerge

public java.lang.Integer hashCodeForParallelMerge()

I never parallel merge subcircuits so this really doesn't matter. This method is too slow for subcircuits with tens of thousands of pins. It's better to avoid calling this method at a higher level.

Specified by:

hashCodeForParallelMerge in class Part

typeString

public java.lang.String typeString()

Description copied from class: Part

returns String describing Part's type

Specified by:

typeString in interface PartReport.PartReportable

Specified by:

typeString in class Part

typeCode

public int typeCode()

Description copied from class: Part

returns a unique int value for each distinct Part type

Specified by:

typeCode in class Part

getPinTypeOfNthPin

public PinType getPinTypeOfNthPin(int n)

Specified by:

getPinTypeOfNthPin in class Part

Returns:

the PinType for the nth pin

connectionDescription

public java.lang.String connectionDescription(Wire w)

Description copied from class: Part

comma separated list of pins connected to w

Specified by:

connectionDescription in class Part

connectionDescription

public java.lang.String connectionDescription(int maxCon)

Description copied from class: NetObject

human readable description of things connected this NetObject

Specified by:

connectionDescription in class NetObject

getHashFor

public int getHashFor(Wire w)

Subcircuits can have tens of thousands of pins. Part.getHashFor(Wire) is O(n) in the number of pins. Since it gets called n times we have O(n^2) execution time. Subcircuit.getHashFor(Wire) takes more storage but executes in constant time.

Overrides:

getHashFor in class Part

Parameters:

w - the Wire for which a hash code is needed

Returns:

an int with the code contribution.