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Source code for qiskit.transpiler.passes.layout.set_layout

# This code is part of Qiskit.
#
# (C) Copyright IBM 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.

"""Set the ``layout`` property to the given layout."""


from qiskit.transpiler.basepasses import AnalysisPass


[docs]class SetLayout(AnalysisPass): """Set the ``layout`` property to the given layout. This pass associates a physical qubit (int) to each virtual qubit of the circuit (Qubit) in increasing order. """ def __init__(self, layout): """SetLayout initializer. Args: layout (Layout): the layout to set. """ super().__init__() self.layout = layout
[docs] def run(self, dag): """Run the SetLayout pass on `dag`. Args: dag (DAGCircuit): DAG to map. Returns: DAGCircuit: the original DAG. """ self.property_set["layout"] = None if self.layout is None else self.layout.copy() return dag