def load_method(state, arg):
"""Like load_attr. Replaces TOS object with method and TOS."""
o = state.stack.pop()
name = state.get_name(arg)
if isinstance(o, Const):
method = Const(getattr(o.value, name))
elif isinstance(o, typehints.AnyTypeConstraint):
method = typehints.Any
else:
method = Const(BoundMethod(getattr(o, name), o))
state.stack.append(method)
def _getattr(o, name):
if isinstance(o, Const) and hasattr(o.value, name):
return Const(getattr(o.value, name))
elif (inspect.isclass(o)
and isinstance(getattr(o, name, None),
(types.MethodType, types.FunctionType))):
# TODO(luke-zhu): Support other callable objects
func = getattr(o, name) # Python 3 has no unbound methods
return Const(BoundMethod(func, o))
elif isinstance(o, row_type.RowTypeConstraint):
return o.get_type_for(name)
else:
return Any
def load_attr(state, arg):
"""Replaces the top of the stack, TOS, with
getattr(TOS, co_names[arg])
"""
o = state.stack.pop()
name = state.get_name(arg)
if isinstance(o, Const) and hasattr(o.value, name):
state.stack.append(Const(getattr(o.value, name)))
elif (inspect.isclass(o)
and isinstance(getattr(o, name, None),
(types.MethodType, types.FunctionType))):
# TODO(luke-zhu): Support other callable objects
if sys.version_info[0] == 2:
func = getattr(o, name).__func__
else:
func = getattr(o, name) # Python 3 has no unbound methods
state.stack.append(Const(BoundMethod(func, o)))
else:
state.stack.append(Any)
def load_method(state, arg):
"""Like load_attr. Replaces TOS object with method and TOS."""
o = state.stack.pop()
name = state.get_name(arg)
if isinstance(o, Const):
method = Const(getattr(o.value, name))
elif isinstance(o, typehints.AnyTypeConstraint):
method = typehints.Any
elif hasattr(o, name):
attr = getattr(o, name)
if isinstance(attr, _MethodDescriptorType):
# Skip builtins since they don't disassemble.
method = typehints.Any
else:
method = Const(BoundMethod(attr, o))
else:
method = typehints.Any
state.stack.append(method)