def FENCE(*qubits: Union[int, Qubit, FormalArgument]) -> Union[FenceAll, Fence]:
"""
Produce a FENCE instruction.
Note: If no qubits are specified, then this is interpreted as a global FENCE.
:params qubits: A list of qubits or formal arguments.
:returns: A Fence or FenceAll instance.
"""
if qubits:
return Fence([Qubit(t) if isinstance(t, int) else t for t in qubits])
else:
return FenceAll()
def fence_some(self, qubits):
f = Fence(list(qubits))
return f
def test_parsing_fence():
parse_equals("FENCE 0", Fence([Qubit(0)]))
parse_equals("FENCE 0 1", Fence([Qubit(0), Qubit(1)]))
parse_equals("FENCE q s", Fence([FormalArgument("q"),
FormalArgument("s")]))
parse_equals("FENCE", FenceAll())