def _infer_sequence_for_pyname(pyname):
if pyname is None:
return None
seq = pyname.get_object()
args = arguments.ObjectArguments([pyname])
if '__iter__' in seq:
iter = seq['__iter__'].get_object().\
get_returned_object(args)
if iter is not None and 'next' in iter:
holding = iter['next'].get_object().\
get_returned_object(args)
return holding
def _self_set(self, context):
if self.keys is not None:
return
new_dict = context.get_pynames(['self', 'd'])[1]
if new_dict and isinstance(new_dict.get_object().get_type(), Dict):
args = arguments.ObjectArguments([new_dict])
items = new_dict.get_object()['popitem'].\
get_object().get_returned_object(args)
context.save_per_name(items)
else:
holding = _infer_sequence_for_pyname(new_dict)
if holding is not None and isinstance(holding.get_type(), Tuple):
context.save_per_name(holding)
def _infer_sequence_for_pyname(pyname):
if pyname is None:
return None
seq = pyname.get_object()
args = arguments.ObjectArguments([pyname])
if "__iter__" in seq:
obj = seq["__iter__"].get_object()
if not isinstance(obj, pyobjects.AbstractFunction):
return None
iter = obj.get_returned_object(args)
if iter is not None and "next" in iter:
holding = iter["next"].get_object().get_returned_object(args)
return holding
def _follow_pyname(assignment, pymodule, lineno=None):
assign_node = assignment.ast_node
if lineno is None:
lineno = _get_lineno_for_node(assign_node)
holding_scope = pymodule.get_scope().get_inner_scope_for_line(lineno)
pyname = evaluate.eval_node(holding_scope, assign_node)
if pyname is not None:
result = pyname.get_object()
if isinstance(result.get_type(), rope.base.builtins.Property) and \
holding_scope.get_kind() == 'Class':
arg = rope.base.pynames.UnboundName(
rope.base.pyobjects.PyObject(holding_scope.pyobject))
return pyname, result.get_type().get_property_object(
arguments.ObjectArguments([arg]))
return pyname, result
def _evaluate_assign_value(self, node, nodes, type_hint=False):
for subscript, levels in nodes:
instance = evaluate.eval_node(self.scope, subscript.value)
args_pynames = [evaluate.eval_node(self.scope,
subscript.slice)]
value = rope.base.oi.soi._infer_assignment(
rope.base.pynames.AssignmentValue(node.value, levels,
type_hint=type_hint),
self.pymodule)
args_pynames.append(rope.base.pynames.UnboundName(value))
if instance is not None and value is not None:
pyobject = instance.get_object()
if '__setitem__' in pyobject:
pyfunction = pyobject['__setitem__'].get_object()
args = arguments.ObjectArguments([instance] + args_pynames)
self._call(pyfunction, args)
def _follow_evaluations(assignment, pyname, pyobject):
new_pyname = pyname
tokens = assignment.evaluation.split('.')
for token in tokens:
call = token.endswith('()')
if call:
token = token[:-2]
if token:
pyname = new_pyname
new_pyname = _get_attribute(pyobject, token)
if new_pyname is not None:
pyobject = new_pyname.get_object()
if pyobject is not None and call:
if isinstance(pyobject, rope.base.pyobjects.AbstractFunction):
args = arguments.ObjectArguments([pyname])
pyobject = pyobject.get_returned_object(args)
else:
pyobject = None
if pyobject is None:
break
if pyobject is not None and assignment.assign_type:
return rope.base.pyobjects.PyObject(pyobject)
return pyobject
def _Assign(self, node):
for child in rope.base.ast.get_child_nodes(node):
rope.base.ast.walk(child, self)
visitor = _SOAAssignVisitor()
nodes = []
for child in node.targets:
rope.base.ast.walk(child, visitor)
nodes.extend(visitor.nodes)
for subscript, levels in nodes:
instance = evaluate.eval_node(self.scope, subscript.value)
args_pynames = []
args_pynames.append(
evaluate.eval_node(self.scope, subscript.slice.value))
value = rope.base.oi.soi._infer_assignment(
rope.base.pynames.AssignmentValue(node.value, levels),
self.pymodule)
args_pynames.append(rope.base.pynames.UnboundName(value))
if instance is not None and value is not None:
pyobject = instance.get_object()
if '__setitem__' in pyobject:
pyfunction = pyobject['__setitem__'].get_object()
args = arguments.ObjectArguments([instance] + args_pynames)
self._call(pyfunction, args)
def _eval(type_=type_, arg=arg):
return type_.get_property_object(
arguments.ObjectArguments([arg]))