mirror of https://github.com/VLSIDA/OpenRAM.git
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
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# See LICENSE for licensing information.
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#
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# Copyright (c) 2016-2023 Regents of the University of California and The Board
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# of Regents for the Oklahoma Agricultural and Mechanical College
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# (acting for and on behalf of Oklahoma State University)
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# All rights reserved.
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#
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from openram import debug
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from .pin_spice import pin_spice
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class net_spice:
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"""
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A class to represent a spice net.
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pins are all the pins connected to this net.
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inst is the instance this net is a part of, if any.
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"""
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def __init__(self, name):
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self.name = name
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self.pins = []
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self.inst = None
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# TODO: evaluate if this makes sense... and works
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self._hash = hash(self.name)
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def connect_pin(self, pin):
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debug.check(isinstance(pin, pin_spice), "pin must be a pin_spice object")
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if pin in self.pins:
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debug.warning("pin {} was already connected to net {} ... why was it connected again?".format(pin.name, self.name))
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else:
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self.pins.append(pin)
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def __str__(self):
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""" override print function output """
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return "(pin_name={} type={})".format(self.name, self.type)
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def __repr__(self):
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""" override repr function output """
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return self.name
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def __eq__(self, name):
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return (name == self.name) if isinstance(name, str) else super().__eq__(name)
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def __hash__(self):
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"""
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Implement the hash function for sets etc.
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Only hash name since spice does not allow two pins to share a name.
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Provides a speedup if pin_spice is used as a key for dicts.
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"""
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return self._hash
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