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Make Converter a kind of adapter, fix converters.pipe #1328

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merged 7 commits into from
Aug 6, 2024
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@hynek hynek commented Aug 5, 2024

Looks like piped converters are hosed. 😳

There's still the issue when a Converter comes last in a pipe, but this fixes at least #1327 and that pipe used to pass nonsense into converters.

src/attr/_make.py Outdated Show resolved Hide resolved
Comment on lines +2727 to +2745
self.__call__ = {
(False, False): self._takes_only_value,
(True, False): self._takes_instance,
(False, True): self._takes_field,
(True, True): self._takes_both,
}[self.takes_self, self.takes_field]

def _takes_only_value(self, value, instance, field):
return self.converter(value)

def _takes_instance(self, value, instance, field):
return self.converter(value, instance)

def _takes_field(self, value, instance, field):
return self.converter(value, field)

def _takes_both(self, value, instance, field):
return self.converter(value, instance, field)

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@Tinche how about now? here, the dict even makes a bit of sense ;) bummer we need self, otherwise I would make it a class var too

@hynek hynek merged commit 6fda0a4 into main Aug 6, 2024
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@hynek hynek deleted the chained-converters branch August 6, 2024 11:49
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Upgrade to 24.1.0 seems to break assignment to fields with chained converters
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