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collect_1q_runs.py
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collect_1q_runs.py
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# This code is part of Qiskit.
#
# (C) Copyright IBM 2017, 2019.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
"""Collect sequences of uninterrupted gates acting on 1 qubit."""
from qiskit.transpiler.basepasses import AnalysisPass
class Collect1qRuns(AnalysisPass):
"""Collect one-qubit subcircuits."""
def run(self, dag):
"""Run the Collect1qBlocks pass on `dag`.
The blocks contain "op" nodes in topological order such that all gates
in a block act on the same qubits and are adjacent in the circuit.
After the execution, ``property_set['run_list']`` is set to a list of
tuples of "op" node.
"""
self.property_set["run_list"] = dag.collect_1q_runs()
return dag