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[case testNativeIntBasics]
from mypy_extensions import i32, i64
def f(x: int) -> i32:
return i32(x)
def g(x: i32) -> None:
pass
reveal_type(i32(1) + i32(2)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(i64(1) + i64(2)) # N: Revealed type is "mypy_extensions.i64"
i32(1) + i64(2) # E: Unsupported operand types for + ("i32" and "i64")
i64(1) + i32(2) # E: Unsupported operand types for + ("i64" and "i32")
g(i32(2))
g(i64(2)) # E: Argument 1 to "g" has incompatible type "i64"; expected "i32"
[builtins fixtures/dict.pyi]
[case testNativeIntCoercions]
from mypy_extensions import i32, i64
def f1(x: int) -> None: pass
def f2(x: i32) -> None: pass
a: i32 = 1
b: i64 = 2
c: i64 = a # E: Incompatible types in assignment (expression has type "i32", variable has type "i64")
d: i64 = i64(a)
e: i32 = b # E: Incompatible types in assignment (expression has type "i64", variable has type "i32")
f: i32 = i32(b)
g: int = a
h: int = b
f1(1)
f1(a)
f1(b)
f2(1)
f2(g)
f2(h)
f2(a)
f2(b) # E: Argument 1 to "f2" has incompatible type "i64"; expected "i32"
[builtins fixtures/dict.pyi]
[case testNativeIntJoins]
from typing import TypeVar, Any
from mypy_extensions import i32, i64
T = TypeVar('T')
def join(x: T, y: T) -> T: return x
n32: i32 = 0
n64: i64 = 1
n = 2
reveal_type(join(n32, n)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(join(n, n32)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(join(n64, n)) # N: Revealed type is "mypy_extensions.i64"
reveal_type(join(n, n64)) # N: Revealed type is "mypy_extensions.i64"
# i32 and i64 aren't treated as compatible
reveal_type(join(n32, n64)) # N: Revealed type is "builtins.object"
reveal_type(join(n64, n32)) # N: Revealed type is "builtins.object"
a: Any
reveal_type(join(n, a)) # N: Revealed type is "Any"
reveal_type(join(n32, a)) # N: Revealed type is "Any"
reveal_type(join(a, n64)) # N: Revealed type is "Any"
reveal_type(join(n64, a)) # N: Revealed type is "Any"
reveal_type(join(a, n64)) # N: Revealed type is "Any"
[builtins fixtures/dict.pyi]
[case testNativeIntMeets]
from typing import TypeVar, Callable, Any
from mypy_extensions import i32, i64
T = TypeVar('T')
def f32(x: i32) -> None: pass
def f64(x: i64) -> None: pass
def f(x: int) -> None: pass
def fa(x: Any) -> None: pass
def meet(c1: Callable[[T], None], c2: Callable[[T], None]) -> T:
pass
reveal_type(meet(f32, f)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(meet(f, f32)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(meet(f64, f)) # N: Revealed type is "mypy_extensions.i64"
reveal_type(meet(f, f64)) # N: Revealed type is "mypy_extensions.i64"
if object():
reveal_type(meet(f32, f64)) # N: Revealed type is "Never"
if object():
reveal_type(meet(f64, f32)) # N: Revealed type is "Never"
reveal_type(meet(f, fa)) # N: Revealed type is "builtins.int"
reveal_type(meet(f32, fa)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(meet(fa, f32)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(meet(f64, fa)) # N: Revealed type is "mypy_extensions.i64"
reveal_type(meet(fa, f64)) # N: Revealed type is "mypy_extensions.i64"
[builtins fixtures/dict.pyi]
[case testNativeIntCoerceInArithmetic]
from mypy_extensions import i32, i64
reveal_type(i32(1) + 1) # N: Revealed type is "mypy_extensions.i32"
reveal_type(1 + i32(1)) # N: Revealed type is "mypy_extensions.i32"
reveal_type(i64(1) + 1) # N: Revealed type is "mypy_extensions.i64"
reveal_type(1 + i64(1)) # N: Revealed type is "mypy_extensions.i64"
n = int()
reveal_type(i32(1) + n) # N: Revealed type is "mypy_extensions.i32"
reveal_type(n + i32(1)) # N: Revealed type is "mypy_extensions.i32"
[builtins fixtures/dict.pyi]
[case testNativeIntNoNarrowing]
from mypy_extensions import i32
x: i32 = 1
if int():
x = 2
reveal_type(x) # N: Revealed type is "mypy_extensions.i32"
reveal_type(x) # N: Revealed type is "mypy_extensions.i32"
y = 1
if int():
# We don't narrow an int down to i32, since they have different
# representations.
y = i32(1)
reveal_type(y) # N: Revealed type is "builtins.int"
reveal_type(y) # N: Revealed type is "builtins.int"
[builtins fixtures/dict.pyi]
[case testNativeIntFloatConversion]
from typing import TypeVar, Callable
from mypy_extensions import i32
x: i32 = 1.1 # E: Incompatible types in assignment (expression has type "float", variable has type "i32")
y: float = i32(1) # E: Incompatible types in assignment (expression has type "i32", variable has type "float")
T = TypeVar('T')
def join(x: T, y: T) -> T: return x
reveal_type(join(x, y)) # N: Revealed type is "builtins.object"
reveal_type(join(y, x)) # N: Revealed type is "builtins.object"
def meet(c1: Callable[[T], None], c2: Callable[[T], None]) -> T:
pass
def ff(x: float) -> None: pass
def fi32(x: i32) -> None: pass
if object():
reveal_type(meet(ff, fi32)) # N: Revealed type is "Never"
if object():
reveal_type(meet(fi32, ff)) # N: Revealed type is "Never"
[builtins fixtures/dict.pyi]
[case testNativeIntForLoopRange]
from mypy_extensions import i64, i32
for a in range(i64(5)):
reveal_type(a) # N: Revealed type is "mypy_extensions.i64"
for b in range(0, i32(5)):
reveal_type(b) # N: Revealed type is "mypy_extensions.i32"
for c in range(i64(0), 5):
reveal_type(c) # N: Revealed type is "mypy_extensions.i64"
for d in range(i64(0), i64(5)):
reveal_type(d) # N: Revealed type is "mypy_extensions.i64"
for e in range(i64(0), i32(5)):
reveal_type(e) # N: Revealed type is "builtins.int"
for f in range(0, i64(3), 2):
reveal_type(f) # N: Revealed type is "mypy_extensions.i64"
n = 5
for g in range(0, n, i64(2)):
reveal_type(g) # N: Revealed type is "mypy_extensions.i64"
[builtins fixtures/primitives.pyi]
[case testNativeIntComprehensionRange]
from mypy_extensions import i64, i32
reveal_type([a for a in range(i64(5))]) # N: Revealed type is "builtins.list[mypy_extensions.i64]"
[reveal_type(a) for a in range(0, i32(5))] # N: Revealed type is "mypy_extensions.i32"
[builtins fixtures/primitives.pyi]
[case testNativeIntNarrowing]
from typing import Union
from mypy_extensions import i64, i32
def narrow_i64(x: Union[str, i64]) -> None:
if isinstance(x, i64):
reveal_type(x) # N: Revealed type is "mypy_extensions.i64"
else:
reveal_type(x) # N: Revealed type is "builtins.str"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i64"
if isinstance(x, str):
reveal_type(x) # N: Revealed type is "builtins.str"
else:
reveal_type(x) # N: Revealed type is "mypy_extensions.i64"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i64"
if isinstance(x, int):
reveal_type(x) # N: Revealed type is "mypy_extensions.i64"
else:
reveal_type(x) # N: Revealed type is "builtins.str"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i64"
def narrow_i32(x: Union[str, i32]) -> None:
if isinstance(x, i32):
reveal_type(x) # N: Revealed type is "mypy_extensions.i32"
else:
reveal_type(x) # N: Revealed type is "builtins.str"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i32"
if isinstance(x, str):
reveal_type(x) # N: Revealed type is "builtins.str"
else:
reveal_type(x) # N: Revealed type is "mypy_extensions.i32"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i32"
if isinstance(x, int):
reveal_type(x) # N: Revealed type is "mypy_extensions.i32"
else:
reveal_type(x) # N: Revealed type is "builtins.str"
reveal_type(x) # N: Revealed type is "builtins.str | mypy_extensions.i32"
[builtins fixtures/primitives.pyi]