# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
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# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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# (meetiqm.com/developers/osstmpolicy). IQM welcomes contributions to the code. Please see our contribution agreements
# for individuals (meetiqm.com/developers/clas/individual) and organizations (meetiqm.com/developers/clas/organization).
[docs]def count_instances_in_cell(cell, pcell_class):
"""Returns the number of pcell instances of type `pcell_class` in cell.
The instances are counted from the entire hierarchy below cell, not only direct child instances. Also pcells with
type derived from `pcell_class` are counted.
cell: cell from which the instances are counted
pcell_class: pcell class of the instances
The number of instances below `cell` for which `isinstance(inst.cell.pcell_declaration(), pcell_class) == True`.
n = 0
if isinstance(cell.pcell_declaration(), pcell_class):
n += 1
for inst in cell.each_inst():
# workaround for getting the cell due to KLayout bug, see
# TODO: replace by `inst_cell = inst.cell` once KLayout bug is fixed
inst_cell = cell.layout().cell(inst.cell_index)
n += count_instances_in_cell(inst_cell, pcell_class)