def ctypes(self):
"""
A ctypes function object representing the C callback.
"""
ctypes_args = [to_ctypes(ty) for ty in self._sig.args]
ctypes_restype = to_ctypes(self._sig.return_type)
functype = ctypes.CFUNCTYPE(ctypes_restype, *ctypes_args)
return functype(self.address)
def test_to_ctypes(self):
"""
Test converting a Numba type to a ctypes type.
"""
def check(cty, ty):
got = ctypes_utils.to_ctypes(ty)
self.assertEqual(got, cty)
self._conversion_tests(check)
# An unsupported type
with self.assertRaises(TypeError) as raises:
ctypes_utils.to_ctypes(types.ellipsis)
self.assertIn("Cannot convert Numba type '...' to ctypes type",
str(raises.exception))
def check(cty, ty):
got = ctypes_utils.to_ctypes(ty)
self.assertEqual(got, cty)
