Instance is an interface used to represent an element instantiated in a netlist. More...

Inheritance diagram for Instance:

Public Member Functions
virtual	~Instance ()=default

virtual void	print_blif (std::ostream &os, size_t &unconn_count, int depth=0)=0
	Print the current instance in blif format. More...

virtual void	print_verilog (std::ostream &os, int depth=0)=0
	Print the current instanse in Verilog, see print_blif() for argument descriptions. More...

virtual void	print_sdf (std::ostream &os, int depth=0)=0
	Print the current instanse in SDF, see print_blif() for argument descriptions. More...

Detailed Description

Instance is an interface used to represent an element instantiated in a netlist.

Instances know how to describe themselves in BLIF, Verilog and SDF

This should be subclassed to implement support for new primitive types (although see BlackBoxInst for a general implementation for a black box primitive)

Constructor & Destructor Documentation

◆ ~Instance()

virtual Instance::~Instance ( )

virtualdefault

Member Function Documentation

◆ print_blif()

virtual void Instance::print_blif	(	std::ostream &	os,
		size_t &	unconn_count,
		int	depth = `0`
	)

pure virtual

Print the current instance in blif format.

Parameters

os	The output stream to print to
unconn_count	The current count of unconnected nets. BLIF has limitations requiring unconnected nets to be used to represent unconnected ports. To allow unique naming of these nets unconn_count is used to uniquify these names. Whenever creating an unconnected net (and using unconn_count to uniquify its name in the file) unconn_count should be incremented.
depth	Current indentation depth. This is used to figure-out how much indentation should be applied. This is purely for cosmetic formatting. Use indent() for generating consistent indentation.

Implemented in BlackBoxInst, LatchInst, and LutInst.