def get_pedal_type_from_type_literal(value, type_space=None) -> Type:
if value == list:
return ListType(empty=False)
elif value == dict:
return DictType(empty=False)
elif isinstance(value, list):
if value:
return ListType(empty=False,
subtype=get_pedal_type_from_type_literal(
value[0], type_space))
else:
return ListType(empty=True)
elif isinstance(value, dict):
if not value:
return DictType(empty=True)
if all(isinstance(value, str) for k in value.keys()):
return DictType(literals=[LiteralStr(s) for s in value.keys()],
values=[
get_pedal_type_from_type_literal(
vv, type_space) for vv in value.values()
])
return DictType(keys=[
get_pedal_type_from_type_literal(k, type_space)
for k in value.keys()
],
values=[
get_pedal_type_from_type_literal(vv, type_space)
for vv in value.values()
])
elif isinstance(value, type):
return get_pedal_type_from_str(value.__name__)
else:
return get_pedal_type_from_str(str(value))
def get_literal(self, node):
"""
Args:
node:
Returns:
"""
if isinstance(node, ast.Num):
return LiteralNum(node.n)
elif isinstance(node, ast.Str):
return LiteralStr(node.s)
elif isinstance(node, ast.Tuple):
values = []
for elt in node.elts:
subvalue = self.get_literal(elt)
if subvalue is not None:
values.append(subvalue)
else:
return None
return LiteralTuple(values)
elif isinstance(node, ast.Name):
if node.id == "None":
return LiteralNone(None)
elif node.id == "False":
return LiteralBool(False)
elif node.id == "True":
return LiteralBool(True)
return None
def get_pedal_literal_from_pedal_type(type):
"""
Args:
type:
Returns:
"""
if isinstance(type, NumType):
return LiteralNum(0)
elif isinstance(type, StrType):
return LiteralStr("")
else:
# TODO: Finish the mapping
return LiteralStr("")
def test_assert_type_custom_record_passes(self):
Dog = DictType(literals=[LiteralStr("Name")], values=[StrType()])
with Execution(
'Dog = {"Name": str}\ndef pet(d: Dog) -> str: return d["Name"]\npet({"Name": "Fido"})'
) as e:
f = ensure_function('pet', parameters=('Dog', ), returns=str)
self.assertFalse(f)
self.assertFeedback(e, SUCCESS_MESSAGE)
def make_record(a_record) -> Type:
if isinstance(a_record, dict):
return DictType(
literals=[LiteralStr(s) for s in a_record.keys()],
values=[make_record(value) for value in a_record.values()])
elif isinstance(a_record, list):
return ListType(subtype=make_record(a_record[0]))
else:
return get_pedal_type_from_str(str(a_record))
def test_assert_type_custom_record_fails(self):
Dog = DictType(literals=[LiteralStr("Name")], values=[StrType()])
with Execution('def pet(d: str) -> str: return d\npet("Fido")') as e:
f = ensure_function('pet', parameters=('Dog', ), returns=str)
self.assertTrue(f)
self.assertFeedback(
e, "Wrong Parameter Type\n"
"The function named pet has a parameter named d"
" that is a string, but should be Dog.")
def get_pedal_literal_from_json(val):
"""
Args:
val:
Returns:
"""
if val['type'] == 'LiteralStr':
return LiteralStr(val['value'])
elif val['type'] == 'LiteralNum':
return LiteralNum(val['value'])
elif val['type'] == 'LiteralBool':
return LiteralBool(val['value'])
def get_pedal_type_from_value(value, type_space=None) -> Type:
""" Converts the Python value to a Pedal Type """
if isinstance(value, bool):
return BoolType()
if isinstance(value, (int, float, complex)):
return NumType()
if isinstance(value, str):
return StrType()
if isinstance(value, type(None)):
return NoneType()
if isinstance(value, tuple):
return TupleType(
(get_pedal_type_from_value(t, type_space) for t in value))
if isinstance(value, set):
return SetType(
(get_pedal_type_from_value(t, type_space) for t in value))
if isinstance(value, frozenset):
return FrozenSetType(
(get_pedal_type_from_value(t, type_space) for t in value))
if isinstance(value, list):
if value:
return ListType(empty=False,
subtype=get_pedal_type_from_value(value[0]))
else:
return ListType(empty=True)
if isinstance(value, dict):
if not value:
return DictType(empty=True)
if all(isinstance(value, str) for k in value.keys()):
return DictType(literals=[LiteralStr(s) for s in value.keys()],
values=[
get_pedal_type_from_value(vv, type_space)
for vv in value.values()
])
return DictType(keys=[
get_pedal_type_from_ast(k, type_space) for k in value.keys()
],
values=[
get_pedal_type_from_ast(vv, type_space)
for vv in value.values()
])
return UnknownType()
def get_pedal_type_from_ast(value: ast.AST, type_space=None) -> Type:
"""
Determines the Pedal Type from this ast node.
Args:
value (ast.AST): An AST node.
Returns:
Type: A Pedal Type
"""
try:
if isinstance(value, ast.Constant):
return get_pedal_type_from_value(value.value, type_space)
except AttributeError as e:
pass
if isinstance(value, ast.Name):
return get_pedal_type_from_str(value.id, type_space)
elif isinstance(value, ast.Str):
return StrType(bool(value.s))
elif isinstance(value, ast.List):
return ListType(subtype=(get_pedal_type_from_ast(
value.elts[0], type_space) if value.elts else None),
empty=not bool(value.elts))
elif isinstance(value, ast.Set):
return SetType(subtype=(get_pedal_type_from_ast(
value.elts[0], type_space) if value.elts else None),
empty=not bool(value.elts))
elif isinstance(value, ast.Tuple):
return TupleType(subtypes=[
get_pedal_type_from_ast(e, type_space) for e in value.elts
])
elif isinstance(value, ast.Dict):
if not value.keys:
return DictType(empty=True)
if all(isinstance(k, ast.Str) for k in value.keys):
return DictType(literals=[LiteralStr(s.s) for s in value.keys],
values=[
get_pedal_type_from_ast(vv, type_space)
for vv in value.values
])
return DictType(
keys=[get_pedal_type_from_ast(k, type_space) for k in value.keys],
values=[
get_pedal_type_from_ast(vv, type_space) for vv in value.values
])
# Support new style subscripts (e.g., ``list[int]``)
elif ((IS_PYTHON_39 and isinstance(value, ast.Subscript))
or isinstance(value, ast.Subscript)
and isinstance(value.slice, ast.Index)):
if IS_PYTHON_39:
slice = value.slice
else:
slice = value.slice.value
if isinstance(value.value, ast.Name):
if isinstance(slice, ast.Name):
subtype = get_pedal_type_from_str(slice.id)
if value.value.id == "list":
return ListType(subtype=subtype, empty=False)
if value.value.id == "set":
return SetType(subtype=subtype, empty=False)
if value.value.id == "tuple":
return TupleType(subtypes=(subtype, ))
if value.value.id == "frozenset":
return FrozenSetType(subtype=subtype, empty=False)
elif isinstance(slice, ast.Tuple):
subtypes = [
get_pedal_type_from_ast(e, type_space) for e in slice.elts
]
if value.value.id == "tuple":
return TupleType(subtypes=subtypes)
elif value.value.id == "dict" and len(subtypes) == 2:
return DictType(keys=subtypes[0], values=subtypes[1])
# Top-level Module, parse it and get it back
if isinstance(value, ast.Module) and value.body:
if isinstance(value.body[0], ast.Expr):
return get_pedal_type_from_ast(value.body[0].value, type_space)
return UnknownType()