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Sort items to guarantee the same output each time #146

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8 changes: 8 additions & 0 deletions ctypeslib/codegen/codegenerator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1082,6 +1082,14 @@ def generate_code(self, output):
self.filter_types()
self.filter_symbols()
self.filter_expressions()

# clang's AST does not guarantee a fixed declaration order
# sort items by name or location. This results in a reproducible output.
self.filtered_items = sorted(
self.filtered_items,
key=lambda x: (x.location[0], x.location[1], x.name) if hasattr(x, 'location') else x.name
)

log.debug("Left with %d items after filtering", len(self.filtered_items))
loops = self.generator.generate(self.parser, self.filtered_items)
if self.cfg.verbose:
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