def try_call(obj, args=(), kwds={}):
# The only entry point for function calls.
callable_ = inspect_callable(obj)
if callable_.self_obj is not None:
args = (callable_.self_obj,) + args
obj = callable_.func_obj
if not is_pure(obj):
return False, None
try:
sig = get_signature(obj)
except ValueError:
return False, None
try:
sig.bind(*args, **kwds)
except TypeError:
# binding failed
return False, None
try:
value = obj(*args, **kwds)
except Exception:
return False, None
return True, value
def test_builtin_bound_method():
assert inspect_callable("a".__getitem__) == Callable(str.__getitem__, self_obj="a")
def test_class_method_in_derived(cls):
d = cls['derived']()
classmethod_func = cls['base'].classmethod.__func__
assert inspect_callable(d.classmethod) == Callable(classmethod_func, self_obj=cls['derived'])
def test_builtin_unbound_method():
assert inspect_callable(str.__getitem__) == Callable(str.__getitem__)
def test_static_method(cls):
d = cls['base']()
assert inspect_callable(d.staticmethod) == Callable(cls['base'].staticmethod)
def test_bound_method_in_derived(cls):
d = cls['derived']()
ref_func = get_method_function(cls['base'].method)
assert inspect_callable(d.method) == Callable(ref_func, self_obj=d)
def test_function():
assert inspect_callable(dummy) == Callable(dummy)
def test_builtin_function():
assert inspect_callable(isinstance) == Callable(isinstance)
def test_builtin_method_in_derived():
s1 = mystr1("a")
ref_func = get_builtin_method_function(str.__getitem__)
assert (inspect_callable(s1.__getitem__) == Callable(ref_func, self_obj=s1))
def test_builtin_method_overloaded_in_derived():
s2 = mystr2("a")
ref_func = get_method_function(mystr2.__getitem__)
assert (inspect_callable(s2.__getitem__) == Callable(ref_func, self_obj=s2))
def test_builtin_bound_method():
ref_func = get_builtin_method_function(str.__getitem__)
assert inspect_callable("a".__getitem__) == Callable(ref_func, self_obj="a")
def test_builtin_unbound_method():
ref_func = get_builtin_method_function(str.__getitem__)
assert inspect_callable(str.__getitem__) == Callable(ref_func)
def test_call_method(cls):
d = cls['base']()
ref_func = get_method_function(cls['base'].__call__)
assert inspect_callable(d) == Callable(ref_func, self_obj=d)
def test_builtin_method_in_derived():
s1 = mystr1("a")
assert (inspect_callable(s1.__getitem__) == Callable(str.__getitem__, self_obj=s1))
def test_unbound_method(cls):
assert inspect_callable(cls['base'].method) == Callable(cls['base'].method)
def test_builtin_method_overloaded_in_derived():
s2 = mystr2("a")
assert (inspect_callable(s2.__getitem__) == Callable(mystr2.__getitem__, self_obj=s2))
def test_bound_method_in_derived(cls):
d = cls['derived']()
assert inspect_callable(d.method) == Callable(cls['base'].method, self_obj=d)
def test_builtin_constructor():
assert inspect_callable(str) == Callable(str, init=True)
def test_call_method(cls):
d = cls['base']()
assert inspect_callable(d) == Callable(cls['base'].__call__, self_obj=d)
def test_constructor(cls):
assert inspect_callable(cls['base']) == Callable(cls['base'], init=True)
def test_unbound_method(cls):
ref_func = get_method_function(cls['base'].method)
assert inspect_callable(cls['base'].method) == Callable(ref_func)
