rr_graph_switch.py

class SwitchType(enum.Enum):
    mux = "mux"
    tristate = "tristate"
    pass_gate = "pass_gate"
    short = "short"
    buffer = "buffer"

    @property
    def isolating(self):
        """If switch type is isolating.

        Isolating switches include a buffer which partition their input and
        output into separate DC-connected sub-circuits.

        Non-isolating switch do not isolate their input and output, which can
        increase RC wire delays.
        """
        return self in (self.mux, self.tristate, self.buffer)

    @property
    def configurable(self):
        """If a switch type is configurable.

        Configurable switches can be turned on/off at configuration time.

        Non-configurable switches can not be controlled at configuration time.
        These are typically used to model non-optional connections such as
        electrical shorts and in-line buffers.
        """
        return self in (self.mux, self.tristate, self.pass_gate)