Datasets:

SwashBuckler001
/

idiombench

"""
Tests the handling of unpacked tuples embedded within other tuples.
"""

# Specification: https://typing.readthedocs.io/en/latest/spec/tuples.html#unpacked-tuple-form

# > An unpacked form of ``tuple`` (using an unpack operator ``*``)
# > can be used within a tuple type argument list

# > Unpacking a concrete tuple type is analogous to unpacking a tuple of values at runtime.


from typing import TypeVarTuple, Unpack, assert_type


def func1(x: tuple[int, *tuple[bool, bool], str]):
    assert_type(x, tuple[int, bool, bool, str])
    assert_type(x, tuple[*tuple[int, bool], bool, str])
    assert_type(x, tuple[int, bool, *tuple[bool, str]])


# > Unpacking an unbounded tuple preserves the unbounded tuple as it is.


def func2(x: tuple[int, *tuple[bool, ...], str]):
    assert_type(x, tuple[int, *tuple[bool, ...], str])


# > For example, tuple[int, *tuple[str]] is equivalent to tuple[int, str].

u1: tuple[*tuple[int], *tuple[int]] = (int(1), int(1))  # OK
assert_type(u1, tuple[int, int])
u2: tuple[*tuple[int, ...], *tuple[int]]  # OK


# > Only one unbounded tuple can be used within another tuple:

t1: tuple[*tuple[str], *tuple[str]]  # OK
t2: tuple[*tuple[str, *tuple[str, ...]]]  # OK
t3: tuple[*tuple[str, ...], *tuple[int, ...]]  # E
t4: tuple[*tuple[str, *tuple[str, ...]], *tuple[int, ...]]  # E


# > An unpacked TypeVarTuple counts as an unbounded tuple in the context of this rule

Ts = TypeVarTuple("Ts")


def func3(t: tuple[*Ts]):
    t5: tuple[*tuple[str], *Ts]  # OK
    t6: tuple[*tuple[str, ...], *Ts]  # E


# > The ``*`` syntax requires Python 3.11 or newer. For older versions of Python,
# > the ``typing.Unpack`` special form can be used:

t11: tuple[Unpack[tuple[str]], Unpack[tuple[str]]]  # OK
t12: tuple[Unpack[tuple[str, Unpack[tuple[str, ...]]]]]  # OK
t13: tuple[Unpack[tuple[str, ...]], Unpack[tuple[int, ...]]]  # E
t14: tuple[  # E[t14]
    Unpack[tuple[str, Unpack[tuple[str, ...]]]], Unpack[tuple[int, ...]]  # E[t14]
]

	"""
	Tests the handling of unpacked tuples embedded within other tuples.
	"""

	# Specification: https://typing.readthedocs.io/en/latest/spec/tuples.html#unpacked-tuple-form

	# > An unpacked form of ``tuple`` (using an unpack operator ``*``)
	# > can be used within a tuple type argument list

	# > Unpacking a concrete tuple type is analogous to unpacking a tuple of values at runtime.


	from typing import TypeVarTuple, Unpack, assert_type


	def func1(x: tuple[int, *tuple[bool, bool], str]):
	assert_type(x, tuple[int, bool, bool, str])
	assert_type(x, tuple[*tuple[int, bool], bool, str])
	assert_type(x, tuple[int, bool, *tuple[bool, str]])


	# > Unpacking an unbounded tuple preserves the unbounded tuple as it is.


	def func2(x: tuple[int, *tuple[bool, ...], str]):
	assert_type(x, tuple[int, *tuple[bool, ...], str])


	# > For example, tuple[int, *tuple[str]] is equivalent to tuple[int, str].

	u1: tuple[tuple[int], tuple[int]] = (int(1), int(1)) # OK
	assert_type(u1, tuple[int, int])
	u2: tuple[tuple[int, ...], tuple[int]] # OK


	# > Only one unbounded tuple can be used within another tuple:

	t1: tuple[tuple[str], tuple[str]] # OK
	t2: tuple[tuple[str, tuple[str, ...]]] # OK
	t3: tuple[tuple[str, ...], tuple[int, ...]] # E
	t4: tuple[tuple[str, tuple[str, ...]], *tuple[int, ...]] # E


	# > An unpacked TypeVarTuple counts as an unbounded tuple in the context of this rule

	Ts = TypeVarTuple("Ts")


	def func3(t: tuple[*Ts]):
	t5: tuple[tuple[str], Ts] # OK
	t6: tuple[tuple[str, ...], Ts] # E


	# > The ``*`` syntax requires Python 3.11 or newer. For older versions of Python,
	# > the ``typing.Unpack`` special form can be used:

	t11: tuple[Unpack[tuple[str]], Unpack[tuple[str]]] # OK
	t12: tuple[Unpack[tuple[str, Unpack[tuple[str, ...]]]]] # OK
	t13: tuple[Unpack[tuple[str, ...]], Unpack[tuple[int, ...]]] # E
	t14: tuple[ # E[t14]
	Unpack[tuple[str, Unpack[tuple[str, ...]]]], Unpack[tuple[int, ...]] # E[t14]
	]