def test_barrier_output(self):
"""Test barrier output."""
bit_event = events.BitEvents(self.qubits[0], self.instructions, 200)
barriers = list(bit_event.get_barriers())
ref_list = [
types.Barrier(t0=120, bits=[self.qubits[0], self.qubits[1]], bit_position=0),
types.Barrier(t0=200, bits=[self.qubits[0]], bit_position=0)
]
self.assertListEqual(barriers, ref_list)
def get_barriers(self) -> Iterator[types.Barrier]:
"""Return barriers."""
for inst in self.instructions:
if isinstance(inst.operand, circuit.Barrier):
barrier = types.Barrier(t0=inst.t0,
bits=inst.bits,
bit_position=inst.bit_position)
yield barrier
def setUp(self) -> None:
"""Setup."""
super().setUp()
self.qubits = list(qiskit.QuantumRegister(3))
self.barrier = types.Barrier(t0=100, bits=self.qubits, bit_position=1)
style = stylesheet.QiskitTimelineStyle()
self.formatter = style.formatter
def load_program(self, program: circuit.QuantumCircuit):
"""Load quantum circuit and create drawing..
Args:
program: Scheduled circuit object to draw.
Raises:
VisualizationError: When circuit is not scheduled.
"""
not_gate_like = (circuit.Barrier, )
if getattr(program, "_op_start_times") is None:
# Run scheduling for backward compatibility
from qiskit import transpile
from qiskit.transpiler import InstructionDurations, TranspilerError
warnings.warn(
"Visualizing un-scheduled circuit with timeline drawer has been deprecated. "
"This circuit should be transpiled with scheduler though it consists of "
"instructions with explicit durations.",
DeprecationWarning,
)
try:
program = transpile(
program,
scheduling_method="alap",
instruction_durations=InstructionDurations())
except TranspilerError as ex:
raise VisualizationError(
f"Input circuit {program.name} is not scheduled and it contains "
"operations with unknown delays. This cannot be visualized."
) from ex
for t0, instruction in zip(program.op_start_times, program.data):
bits = list(instruction.qubits) + list(instruction.clbits)
for bit_pos, bit in enumerate(bits):
if not isinstance(instruction.operation, not_gate_like):
# Generate draw object for gates
gate_source = types.ScheduledGate(
t0=t0,
operand=instruction.operation,
duration=instruction.operation.duration,
bits=bits,
bit_position=bit_pos,
)
for gen in self.generator["gates"]:
obj_generator = partial(gen, formatter=self.formatter)
for datum in obj_generator(gate_source):
self.add_data(datum)
if len(bits) > 1 and bit_pos == 0:
# Generate draw object for gate-gate link
line_pos = t0 + 0.5 * instruction.operation.duration
link_source = types.GateLink(
t0=line_pos,
opname=instruction.operation.name,
bits=bits)
for gen in self.generator["gate_links"]:
obj_generator = partial(gen,
formatter=self.formatter)
for datum in obj_generator(link_source):
self.add_data(datum)
if isinstance(instruction.operation, circuit.Barrier):
# Generate draw object for barrier
barrier_source = types.Barrier(t0=t0,
bits=bits,
bit_position=bit_pos)
for gen in self.generator["barriers"]:
obj_generator = partial(gen, formatter=self.formatter)
for datum in obj_generator(barrier_source):
self.add_data(datum)
self.bits = list(program.qubits) + list(program.clbits)
for bit in self.bits:
for gen in self.generator["bits"]:
# Generate draw objects for bit
obj_generator = partial(gen, formatter=self.formatter)
for datum in obj_generator(bit):
self.add_data(datum)
# update time range
t_end = max(program.duration,
self.formatter["margin.minimum_duration"])
self.set_time_range(t_start=0, t_end=t_end)