def match(self, t: Any, ctx: SerdeStepContext) -> bool:
t, _ = _build_generic_context(t, ctx)
if sys.version_info >= (3, 7):
if hasattr(t, '__origin__'):
return t.__origin__ is tuple
if inspect.isclass(t):
return issubclass(t, Tuple)
else:
return False
def step(self, i: SerdeInst, t: Any, ctx: SerdeStepContext) -> SerdeNode:
# todo: here, we may need to instantiate the generic items
t, ctx = _build_generic_context(t, ctx)
xt = t
if sys.version_info >= (3, 7):
is_gen = hasattr(t, '__origin__')
if is_gen:
xt = t.__origin__
logging.getLogger(__name__ + '.DataclassSerde.step').debug(
'%s %s', t, ctx)
return SerdeNode(i.norm(t, ctx), [
i.norm(f.type, ctx)
for f in sorted(fields(xt), key=lambda x: x.name)
], ctx)
def norm(self, i: SerdeInst, t: Any, ctx: SerdeStepContext) -> Any:
t, ctx = _build_generic_context(t, ctx)
return t
def norm(self, i: SerdeInst, t: Any, ctx: SerdeStepContext) -> Any:
_, ctx = _build_generic_context(t, ctx)
args = tuple(i.norm(st, ctx) for st in t.__args__)
return Tuple[args]
def norm(self, i: SerdeInst, t: Any, ctx: SerdeStepContext) -> Any:
_, ctx = _build_generic_context(t, ctx)
st, = t.__args__
st = i.norm(st, ctx)
return List[st]
def build_generic_context(*args):
_, r = _build_generic_context(*args)
return r