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29 lines
745 B
Python
29 lines
745 B
Python
"""
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Some utility code that gets reused
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"""
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from typing import Set, Tuple
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from .types import connectivity_t, layer_t
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def connectivity2layers(
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connectivity: connectivity_t,
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) -> Tuple[Set[layer_t], Set[layer_t]]:
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"""
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Extract the set of all metal layers and the set of all via layers
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from the connectivity description.
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"""
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metal_layers = set()
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via_layers = set()
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for top, via, bot in connectivity:
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metal_layers.add(top)
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metal_layers.add(bot)
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if via is not None:
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via_layers.add(via)
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both = metal_layers.intersection(via_layers)
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if both:
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raise Exception(f'The following layers are both vias and metals!? {both}')
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return metal_layers, via_layers
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