# Copyright 2018 The Cirq Developers
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from cirq import ops
from cirq.devices import Device
from cirq.value import Duration, Timestamp
[docs]class ScheduledOperation:
"""An operation that happens over a specified time interval."""
[docs] def __init__(self,
time: Timestamp,
duration: Duration,
operation: ops.Operation) -> None:
"""Initializes the scheduled operation.
Args:
time: When the operation starts.
duration: How long the operation lasts.
operation: The operation.
"""
self.time = time
self.duration = duration
self.operation = operation
[docs] @staticmethod
def op_at_on(operation: ops.Operation,
time: Timestamp,
device: Device):
"""Creates a scheduled operation with a device-determined duration."""
return ScheduledOperation(time,
device.duration_of(operation),
operation)
def __eq__(self, other):
if not isinstance(other, type(self)):
return NotImplemented
return (self.time == other.time and
self.operation == other.operation and
self.duration == other.duration)
def __ne__(self, other):
return not self == other
def __hash__(self):
return hash((ScheduledOperation,
self.time,
self.operation,
self.duration))
def __str__(self):
return '{} during [{}, {})'.format(
self.operation, self.time, self.time + self.duration)
def __repr__(self):
return 'ScheduledOperation({}, {}, {})'.format(
repr(self.time), repr(self.duration), repr(self.operation))