text stringlengths 0 828 |
|---|
for typpp in sub_list: |
for t in get_all_subclasses(typpp, recursive=True, _memo=_memo): |
# unfortunately we have to check 't not in sub_list' because with generics strange things happen |
# also is_subtype returns false when the parent is a generic |
if t not in sub_list and is_subtype(t, typ, bound_typevars={}): |
result.append(t) |
return result" |
1044,"def eval_forward_ref(typ: _ForwardRef): |
"""""" |
Climbs the current stack until the given Forward reference has been resolved, or raises an InvalidForwardRefError |
:param typ: the forward reference to resolve |
:return: |
"""""" |
for frame in stack(): |
m = getmodule(frame[0]) |
m_name = m.__name__ if m is not None else '<unknown>' |
if m_name.startswith('parsyfiles.tests') or not m_name.startswith('parsyfiles'): |
try: |
# print(""File {}:{}"".format(frame.filename, frame.lineno)) |
return typ._eval_type(frame[0].f_globals, frame[0].f_locals) |
except NameError: |
pass |
raise InvalidForwardRefError(typ)" |
1045,"def is_valid_pep484_type_hint(typ_hint, allow_forward_refs: bool = False): |
"""""" |
Returns True if the provided type is a valid PEP484 type hint, False otherwise. |
Note: string type hints (forward references) are not supported by default, since callers of this function in |
parsyfiles lib actually require them to be resolved already. |
:param typ_hint: |
:param allow_forward_refs: |
:return: |
"""""" |
# most common case first, to be faster |
try: |
if isinstance(typ_hint, type): |
return True |
except: |
pass |
# optionally, check forward reference |
try: |
if allow_forward_refs and is_forward_ref(typ_hint): |
return True |
except: |
pass |
# finally check unions and typevars |
try: |
return is_union_type(typ_hint) or is_typevar(typ_hint) |
except: |
return False" |
1046,"def is_pep484_nonable(typ): |
"""""" |
Checks if a given type is nonable, meaning that it explicitly or implicitly declares a Union with NoneType. |
Nested TypeVars and Unions are supported. |
:param typ: |
:return: |
"""""" |
# TODO rely on typing_inspect if there is an answer to https://github.com/ilevkivskyi/typing_inspect/issues/14 |
if typ is type(None): |
return True |
elif is_typevar(typ) or is_union_type(typ): |
return any(is_pep484_nonable(tt) for tt in get_alternate_types_resolving_forwardref_union_and_typevar(typ)) |
else: |
return False" |
1047,"def _extract_collection_base_type(collection_object_type, exception_if_none: bool = True, |
resolve_fwd_refs: bool = True) -> Tuple[Type, Optional[Type]]: |
"""""" |
Utility method to extract the base item type from a collection/iterable item type. |
Throws |
* a TypeError if the collection_object_type a Dict with non-string keys. |
* an AttributeError if the collection_object_type is actually not a collection |
* a TypeInformationRequiredError if somehow the inner type can't be found from the collection type (either if dict, |
list, set, tuple were used instead of their typing module equivalents (Dict, List, Set, Tuple), or if the latter |
were specified without inner content types (as in Dict instead of Dict[str, Foo]) |
:param collection_object_type: |
:return: a tuple containing the collection's content type (which may itself be a Tuple in case of a Tuple) and the |
collection's content key type for dicts (or None) |
"""""" |
contents_item_type = None |
contents_key_type = None |
check_var(collection_object_type, var_types=type, var_name='collection_object_type') |
is_tuple = False |
if is_tuple_type(collection_object_type): # Tuple is a special construct, is_generic_type does not work |
is_tuple = True |
# --old: hack into typing module |
# if hasattr(collection_object_type, '__args__') and collection_object_type.__args__ is not None: |
# contents_item_type = collection_object_type.__args__ |
# --new : using typing_inspect |
# __args = get_last_args(collection_object_type) |
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