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scripts.replace_cell improvement #204

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Feb 12, 2024
Merged

scripts.replace_cell improvement #204

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41 changes: 26 additions & 15 deletions klayout_dot_config/python/SiEPIC/scripts.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3535,13 +3535,17 @@ def button(self):
wdg.show()


def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_library=None, Exact = True, debug = False):
def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_library=None, Exact = True, RequiredCharacter = '$', debug = False):
'''
SiEPIC-Tools: scripts.replace_cell
Search and replace: cell_x with cell_y
useful for blackbox IP cell replacement
- load layout containing cell_y_name from cell_y_file or cell_y_library
- replace all cell_x_name* instances with cell_y
- Exact = True: the cell name must match exactly
= False: the cell_y_name appears at the beginning of the cells to be replaced
and RequiredCharacter appears directly after, e.g,. '$' as KLayout appends during merging
(exact match is still included)

Black box True geometry
Basename_BB, Basename_BB* YES: Basename
Expand All @@ -3556,26 +3560,39 @@ def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_libr
log += "- cell replacement for: %s, with cell %s (%s)\n" % (cell_x_name, cell_y_name, os.path.basename(cell_y_file))

# Find the cells that need replacement (cell_x)
if Exact:
# find cell name exactly matching cell_x_name
cells_x = [layout.cell(cell_x_name)]
else:
# find cell name exactly matching cell_x_name
cells_x = [layout.cell(cell_x_name)]
if not Exact:
# replacement for all cells that:
# 1) cell name exact matching cell_x_name, OR
# 2) that begin with the cell name, i.e., xxx* is matched
# i.e., xxx and xxx* are matched
cells_x = [cell for cell in layout.each_cell() if cell.name.find(cell_x_name) == 0]
cells_x += [cell for cell in layout.each_cell() if cell.name.find(cell_x_name+RequiredCharacter) == 0]

# replacement for all cells that:
# 1) cell name exact matching cell_x_name, OR
# 2) that begin with the cell name and have a $
# i.e., xxx and xxx$* are matched (was used for the Phot1x 2022/06 tapeout)
#cells_x = [cell for cell in layout.each_cell() if cell.name == cell_x_name or cell.name.find(cell_x_name) == 0 and '$' in cell.name]


if not cells_x or not cells_x[0]:
if debug:
print(" - none found: %s" % cell_x_name)
log += " - none found: %s" % cell_x_name
return

if Exact:
if debug:
print(" - exact match: %s" % cells_x[0].name)
log += " - exact match: %s" % cells_x[0].name
else:
if debug:
print(" - non-exact match: %s" % ([c.name for c in cells_x]) )
log += " - non-exact match: %s" % ([c.name for c in cells_x])

# Load the new cell:
if cell_y_file:
# find cell name CELL_Y
# print(layout.top_cell())
cell_y = layout.cell(cell_y_name)
if debug:
print(" - checking for cell %s in current layout: %s" % (cell_y_name, cell_y))
Expand All @@ -3600,7 +3617,7 @@ def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_libr

for cell_x in cells_x:
if debug:
print(" - replace_cell: found cells to be replaced: %s" % (cell_x.name))
print(" - replace_cell: found cells to be replaced: %s" % (cell_x.name))

# find caller cells
caller_cells = cell_x.caller_cells()
Expand All @@ -3612,15 +3629,12 @@ def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_libr
itr = cc.each_inst()
inst = next(itr)
while inst:
# if debug:
# print(" - found inst: %s, %s" % (inst, inst.cell.name))
if inst.cell.name == cell_x.name:
if cell_y.destroyed():
print(' - Warning: cell_y (%s) destroyed, skipping replacement' % (cell_y_name))
print(" - destroyed status: cell_y - %s, cell_x - %s, cc - %s" % (cell_y.destroyed(), cell_x.destroyed(), cc.destroyed()))
print(' - looking for cell. %s, %s, %s' % (cell_y_name, cell_y, layout.cell(cell_y_name)))
log += ' - Warning: cell destroyed, skipping replacement\n'
# continue # skip this inst, continue to next; stays in an infinite loop
break # skip this cell
# replace with CELL_Y
if inst.is_regular_array():
Expand All @@ -3634,12 +3648,9 @@ def replace_cell(layout, cell_x_name, cell_y_name, cell_y_file=None, cell_y_libr
cc.replace(inst, pya.CellInstArray(cell_y.cell_index(),inst.trans))
inst = next(itr, None)


return log




def svg_from_cell(verbose=True):
if verbose:
print('SiEPIC.scripts: svg_from_cell()')
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