# Quellcode für qiskit.transpiler.passes.analysis.count_ops_longest_path

# This code is part of Qiskit.
#
# (C) Copyright IBM 2017, 2019.
#
# obtain a copy of this license in the LICENSE.txt file in the root directory
#
# 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.

"""Count the operations on the longest path in a DAGcircuit."""

from qiskit.transpiler.basepasses import AnalysisPass

[Doku]class CountOpsLongestPath(AnalysisPass):
"""Count the operations on the longest path in a DAGcircuit.

The result is saved in property_set['count_ops_longest_path'] as an integer.
"""

[Doku]    def run(self, dag):
"""Run the CountOpsLongestPath pass on dag."""
self.property_set['count_ops_longest_path'] = \
dag.count_ops_longest_path()