def best_match(func_wrapper, argtypes):
"""
Find the right overload for a numba function.
Arguments
---------
func_wrapper: FunctionWrapper
The function
argtypes: [Type]
Types to call the overloaded function with
Returns
-------
(py_func, result_signature)
"""
o = func_wrapper.dispatcher
scope = determine_scope(func_wrapper.py_func)
bound = {} # TODO:
overloaded = resolve_overloads(o, scope, bound)
argtypes = [to_blaze(t) for t in argtypes]
overload = overloading.best_match(overloaded, argtypes)
signature = resolve(overload.resolved_sig, scope, bound)
return (overload.func, signature, overload.kwds)
def test_best_match_ellipses(self):
d1 = dshape('10, T1, int32')
d2 = dshape('..., float32')
match = best_match(g, [d1, d2])
self.assertEqual(str(match.sig), 'X, Y, float32 -> ..., float32 -> X, int32')
self.assertEqual(str(match.resolved_sig),
'10, T1, float32 -> ..., float32 -> 10, int32')
def test_best_match_broadcasting(self):
d1 = dshape('10, complex64')
d2 = dshape('10, float32')
match = best_match(f, [d1, d2])
self.assertEqual(str(match.sig),
'X, Y, cfloat32 -> X, Y, cfloat32 -> X, Y, cfloat32')
self.assertEqual(str(match.resolved_sig),
'1, 10, cfloat32 -> 1, 10, cfloat32 -> 1, 10, cfloat32')
def test_best_match(self):
d1 = dshape('10, T1, int32')
d2 = dshape('T2, T2, float32')
match = best_match(f, [d1, d2])
self.assertEqual(str(match.sig),
'X, Y, float32 -> X, Y, float32 -> X, Y, float32')
input = dshape('1, 1, float32 -> 1, 1, float32 -> R')
self.assertEqual(str(unify_simple(input, match.resolved_sig)),
'10, 1, float32 -> 10, 1, float32 -> 10, 1, float32')
