def iterator(self, type: Type, values: bool = False) -> "FieldIteratorT":
"""Get an iterator function for a given type, if possible."""
if ismappingtype(type):
iter = _valuescaller if values else _itemscaller
return iter
if isiterabletype(type):
return _iter
fields = self.get_fields(type, as_source=True) or {}
if fields:
func_name = get_defname("iterator", (type, values))
oname = "o"
ctx: dict = {}
with Block(ctx) as main:
with main.f(func_name, Block.p(oname)) as func:
if values:
for f in fields:
func.l(f"{Keyword.YLD} {oname}.{f}")
else:
for f in fields:
func.l(f"{Keyword.YLD} {f!r}, {oname}.{f}")
return main.compile(name=func_name, ns=ctx)
raise TranslatorTypeError(
f"Cannot get iterator for type {type!r}, unable to determine fields."
) from None
def iterator(
self,
type: Type,
values: bool = False,
relaxed: bool = False,
exclude: Tuple[str, ...] = (),
) -> IteratorT:
"""Get an iterator function for a given type, if possible."""
mapping, iterable, builtin, namedtuple, typicklass = (
ismappingtype(type),
isiterabletype(type),
isbuiltinsubtype(type),
isnamedtuple(type),
istypicklass(type),
)
if mapping:
return _valuescaller if values else _itemscaller
if (iterable, namedtuple, typicklass) == (True, False, False):
return iter if values else enumerate
if (builtin, iterable) == (True, False):
raise TranslatorTypeError(
f"Cannot get iterator for type {type.__name__!r}."
) from None
fields = self.get_fields(type, as_source=True, exclude=exclude) or {}
if not fields and not relaxed:
raise TranslatorTypeError(
f"Cannot get iterator for type {type.__name__!r}, "
f"unable to determine fields."
) from None
func_name = get_defname("iterator", (type, values))
oname = "o"
ctx: dict = {}
with Block(ctx) as main:
with main.f(func_name, Block.p(oname)) as func:
if fields:
if values:
for f in fields:
func.l(f"{Keyword.YLD} {oname}.{f}")
else:
for f in fields:
func.l(f"{Keyword.YLD} {f!r}, {oname}.{f}")
else:
func.l(f"{Keyword.YLD}")
return main.compile(name=func_name, ns=ctx)
def _get_validator_name(self) -> str:
return util.get_defname("validator", self)
def _get_name(annotation: Annotation) -> str:
return util.get_defname("serializer", annotation)
def _get_name(source: Type, target: Type) -> str:
return get_defname("translator", (source, target))
def _get_name(annotation: Annotation) -> str:
return get_defname("deserializer", annotation)
def _get_name(annotation: "Annotation",
constr: Optional["const.ConstraintsT"]) -> str:
return get_defname("deserializer", (annotation, constr))