/
builtins.py
868 lines (693 loc) · 25.8 KB
/
builtins.py
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"""This module tries to support builtin types and functions."""
import ast
import inspect
import io
try:
raw_input
except NameError:
raw_input = input
import rope.base.evaluate
from rope.base import pynames, pyobjects, arguments, utils
class BuiltinModule(pyobjects.AbstractModule):
def __init__(self, name, pycore=None, initial={}):
super().__init__()
self.name = name
self.pycore = pycore
self.initial = initial
parent = None
def get_attributes(self):
return self.attributes
def get_doc(self):
if self.module:
return self.module.__doc__
def get_name(self):
return self.name.split(".")[-1]
@property
@utils.saveit
def attributes(self):
result = _object_attributes(self.module, self)
result.update(self.initial)
if self.pycore is not None:
submodules = self.pycore._builtin_submodules(self.name)
for name, module in submodules.items():
result[name] = rope.base.builtins.BuiltinName(module)
return result
@property
@utils.saveit
def module(self):
try:
result = __import__(self.name)
for token in self.name.split(".")[1:]:
result = getattr(result, token, None)
return result
except ImportError:
return
class _BuiltinElement:
def __init__(self, builtin, parent=None):
self.builtin = builtin
self._parent = parent
def get_doc(self):
if self.builtin:
return getattr(self.builtin, "__doc__", None)
def get_name(self):
if self.builtin:
return getattr(self.builtin, "__name__", None)
@property
def parent(self):
if self._parent is None:
return builtins
return self._parent
class BuiltinClass(_BuiltinElement, pyobjects.AbstractClass):
def __init__(self, builtin, attributes, parent=None):
_BuiltinElement.__init__(self, builtin, parent)
pyobjects.AbstractClass.__init__(self)
self.initial = attributes
@utils.saveit
def get_attributes(self):
result = _object_attributes(self.builtin, self)
result.update(self.initial)
return result
def get_module(self):
return builtins
class BuiltinFunction(_BuiltinElement, pyobjects.AbstractFunction):
def __init__(
self, returned=None, function=None, builtin=None, argnames=[], parent=None
):
_BuiltinElement.__init__(self, builtin, parent)
pyobjects.AbstractFunction.__init__(self)
self.argnames = argnames
self.returned = returned
self.function = function
def get_returned_object(self, args):
if self.function is not None:
return self.function(_CallContext(self.argnames, args))
else:
return self.returned
def get_param_names(self, special_args=True):
return self.argnames
class BuiltinUnknown(_BuiltinElement, pyobjects.PyObject):
def __init__(self, builtin):
super().__init__(pyobjects.get_unknown())
self.builtin = builtin
self.type = pyobjects.get_unknown()
def get_name(self):
return getattr(type(self.builtin), "__name__", None)
@utils.saveit
def get_attributes(self):
return _object_attributes(self.builtin, self)
def _object_attributes(obj, parent):
attributes = {}
for name in dir(obj):
if name == "None":
continue
try:
child = getattr(obj, name)
except AttributeError:
# descriptors are allowed to raise AttributeError
# even if they are in dir()
continue
pyobject = None
if inspect.isclass(child):
pyobject = BuiltinClass(child, {}, parent=parent)
elif inspect.isroutine(child):
pyobject = BuiltinFunction(builtin=child, parent=parent)
else:
pyobject = BuiltinUnknown(builtin=child)
attributes[name] = BuiltinName(pyobject)
return attributes
def _create_builtin_type_getter(cls):
def _get_builtin(*args):
if not hasattr(cls, "_generated"):
cls._generated = {}
if args not in cls._generated:
cls._generated[args] = cls(*args)
return cls._generated[args]
return _get_builtin
def _create_builtin_getter(cls):
type_getter = _create_builtin_type_getter(cls)
def _get_builtin(*args):
return pyobjects.PyObject(type_getter(*args))
return _get_builtin
class _CallContext:
def __init__(self, argnames, args):
self.argnames = argnames
self.args = args
def _get_scope_and_pyname(self, pyname):
if pyname is not None and isinstance(pyname, pynames.AssignedName):
pymodule, lineno = pyname.get_definition_location()
if pymodule is None:
return None, None
if lineno is None:
lineno = 1
scope = pymodule.get_scope().get_inner_scope_for_line(lineno)
name = None
while name is None and scope is not None:
for current in scope.get_names():
if scope[current] is pyname:
name = current
break
else:
scope = scope.parent
return scope, name
return None, None
def get_argument(self, name):
if self.args:
args = self.args.get_arguments(self.argnames)
return args[self.argnames.index(name)]
def get_pyname(self, name):
if self.args:
args = self.args.get_pynames(self.argnames)
if name in self.argnames:
return args[self.argnames.index(name)]
def get_arguments(self, argnames):
if self.args:
return self.args.get_arguments(argnames)
def get_pynames(self, argnames):
if self.args:
return self.args.get_pynames(argnames)
def get_per_name(self):
if self.args is None:
return None
pyname = self.args.get_instance_pyname()
scope, name = self._get_scope_and_pyname(pyname)
if name is not None:
pymodule = pyname.get_definition_location()[0]
return pymodule.pycore.object_info.get_per_name(scope, name)
return None
def save_per_name(self, value):
if self.args is None:
return None
pyname = self.args.get_instance_pyname()
scope, name = self._get_scope_and_pyname(pyname)
if name is not None:
pymodule = pyname.get_definition_location()[0]
pymodule.pycore.object_info.save_per_name(scope, name, value)
class _AttributeCollector:
def __init__(self, type):
self.attributes = {}
self.type = type
def __call__(
self,
name,
returned=None,
function=None,
argnames=["self"],
check_existence=True,
parent=None,
):
try:
builtin = getattr(self.type, name)
except AttributeError:
if check_existence:
raise
builtin = None
self.attributes[name] = BuiltinName(
BuiltinFunction(
returned=returned,
function=function,
argnames=argnames,
builtin=builtin,
parent=parent,
)
)
def __setitem__(self, name, value):
self.attributes[name] = value
class List(BuiltinClass):
def __init__(self, holding=None):
self.holding = holding
collector = _AttributeCollector(list)
collector("__iter__", function=self._iterator_get, parent=self)
collector("__new__", function=self._new_list, parent=self)
# Adding methods
collector(
"append", function=self._list_add, argnames=["self", "value"], parent=self
)
collector(
"__setitem__",
function=self._list_add,
argnames=["self", "index", "value"],
parent=self,
)
collector(
"insert",
function=self._list_add,
argnames=["self", "index", "value"],
parent=self,
)
collector(
"extend",
function=self._self_set,
argnames=["self", "iterable"],
parent=self,
)
# Getting methods
collector("__getitem__", function=self._list_get, parent=self)
collector("pop", function=self._list_get, parent=self)
try:
collector("__getslice__", function=self._list_get)
except AttributeError:
pass
super().__init__(list, collector.attributes)
def _new_list(self, args):
return _create_builtin(args, get_list)
def _list_add(self, context):
if self.holding is not None:
return
holding = context.get_argument("value")
if holding is not None and holding != pyobjects.get_unknown():
context.save_per_name(holding)
def _self_set(self, context):
if self.holding is not None:
return
iterable = context.get_pyname("iterable")
holding = _infer_sequence_for_pyname(iterable)
if holding is not None and holding != pyobjects.get_unknown():
context.save_per_name(holding)
def _list_get(self, context):
if self.holding is not None:
args = context.get_arguments(["self", "key"])
if (
len(args) > 1
and args[1] is not None
and args[1].get_type() == builtins["slice"].get_object()
):
return get_list(self.holding)
return self.holding
return context.get_per_name()
def _iterator_get(self, context):
return get_iterator(self._list_get(context))
def _self_get(self, context):
return get_list(self._list_get(context))
get_list = _create_builtin_getter(List)
get_list_type = _create_builtin_type_getter(List)
class Dict(BuiltinClass):
def __init__(self, keys=None, values=None):
self.keys = keys
self.values = values
collector = _AttributeCollector(dict)
collector("__new__", function=self._new_dict, parent=self)
collector("__setitem__", function=self._dict_add, parent=self)
collector("popitem", function=self._item_get, parent=self)
collector("pop", function=self._value_get, parent=self)
collector("get", function=self._key_get, parent=self)
collector("keys", function=self._key_list, parent=self)
collector("values", function=self._value_list, parent=self)
collector("items", function=self._item_list, parent=self)
collector("copy", function=self._self_get, parent=self)
collector("__getitem__", function=self._value_get, parent=self)
collector("__iter__", function=self._key_iter, parent=self)
collector("update", function=self._self_set, parent=self)
super().__init__(dict, collector.attributes)
def _new_dict(self, args):
def do_create(holding=None):
if holding is None:
return get_dict()
type = holding.get_type()
if isinstance(type, Tuple) and len(type.get_holding_objects()) == 2:
return get_dict(*type.get_holding_objects())
return _create_builtin(args, do_create)
def _dict_add(self, context):
if self.keys is not None:
return
key, value = context.get_arguments(["self", "key", "value"])[1:]
if key is not None and key != pyobjects.get_unknown():
context.save_per_name(get_tuple(key, value))
def _item_get(self, context):
if self.keys is not None:
return get_tuple(self.keys, self.values)
item = context.get_per_name()
if item is None or not isinstance(item.get_type(), Tuple):
return get_tuple(self.keys, self.values)
return item
def _value_get(self, context):
item = self._item_get(context).get_type()
return item.get_holding_objects()[1]
def _key_get(self, context):
item = self._item_get(context).get_type()
return item.get_holding_objects()[0]
def _value_list(self, context):
return get_list(self._value_get(context))
def _key_list(self, context):
return get_list(self._key_get(context))
def _item_list(self, context):
return get_list(self._item_get(context))
def _value_iter(self, context):
return get_iterator(self._value_get(context))
def _key_iter(self, context):
return get_iterator(self._key_get(context))
def _item_iter(self, context):
return get_iterator(self._item_get(context))
def _self_get(self, context):
item = self._item_get(context).get_type()
key, value = item.get_holding_objects()[:2]
return get_dict(key, value)
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)
get_dict = _create_builtin_getter(Dict)
get_dict_type = _create_builtin_type_getter(Dict)
class Tuple(BuiltinClass):
def __init__(self, *objects):
self.objects = objects
first = None
if objects:
first = objects[0]
attributes = {
"__getitem__": BuiltinName(
BuiltinFunction(first)
), # TODO: add slice support
"__getslice__": BuiltinName(BuiltinFunction(pyobjects.PyObject(self))),
"__new__": BuiltinName(BuiltinFunction(function=self._new_tuple)),
"__iter__": BuiltinName(BuiltinFunction(get_iterator(first))),
}
super().__init__(tuple, attributes)
def get_holding_objects(self):
return self.objects
def _new_tuple(self, args):
return _create_builtin(args, get_tuple)
get_tuple = _create_builtin_getter(Tuple)
get_tuple_type = _create_builtin_type_getter(Tuple)
class Set(BuiltinClass):
def __init__(self, holding=None):
self.holding = holding
collector = _AttributeCollector(set)
collector("__new__", function=self._new_set)
self_methods = [
"copy",
"difference",
"intersection",
"symmetric_difference",
"union",
]
for method in self_methods:
collector(method, function=self._self_get, parent=self)
collector("add", function=self._set_add, parent=self)
collector("update", function=self._self_set, parent=self)
collector("update", function=self._self_set, parent=self)
collector("symmetric_difference_update", function=self._self_set, parent=self)
collector("difference_update", function=self._self_set, parent=self)
collector("pop", function=self._set_get, parent=self)
collector("__iter__", function=self._iterator_get, parent=self)
super().__init__(set, collector.attributes)
def _new_set(self, args):
return _create_builtin(args, get_set)
def _set_add(self, context):
if self.holding is not None:
return
holding = context.get_arguments(["self", "value"])[1]
if holding is not None and holding != pyobjects.get_unknown():
context.save_per_name(holding)
def _self_set(self, context):
if self.holding is not None:
return
iterable = context.get_pyname("iterable")
holding = _infer_sequence_for_pyname(iterable)
if holding is not None and holding != pyobjects.get_unknown():
context.save_per_name(holding)
def _set_get(self, context):
if self.holding is not None:
return self.holding
return context.get_per_name()
def _iterator_get(self, context):
return get_iterator(self._set_get(context))
def _self_get(self, context):
return get_list(self._set_get(context))
get_set = _create_builtin_getter(Set)
get_set_type = _create_builtin_type_getter(Set)
class Str(BuiltinClass):
def __init__(self):
self_object = pyobjects.PyObject(self)
collector = _AttributeCollector(str)
collector("__iter__", get_iterator(self_object), check_existence=False)
self_methods = [
"__getitem__",
"capitalize",
"center",
"encode",
"expandtabs",
"join",
"ljust",
"lower",
"lstrip",
"replace",
"rjust",
"rstrip",
"strip",
"swapcase",
"title",
"translate",
"upper",
"zfill",
]
for method in self_methods:
collector(method, self_object, parent=self)
py2_self_methods = ["__getslice__", "decode"]
for method in py2_self_methods:
try:
collector(method, self_object)
except AttributeError:
pass
for method in ["rsplit", "split", "splitlines"]:
collector(method, get_list(self_object), parent=self)
super().__init__(str, collector.attributes)
def get_doc(self):
return str.__doc__
get_str = _create_builtin_getter(Str)
get_str_type = _create_builtin_type_getter(Str)
class BuiltinName(pynames.PyName):
def __init__(self, pyobject):
self.pyobject = pyobject
def get_object(self):
return self.pyobject
def get_definition_location(self):
return (None, None)
class Iterator(pyobjects.AbstractClass):
def __init__(self, holding=None):
super().__init__()
self.holding = holding
self.attributes = {
"next": BuiltinName(BuiltinFunction(self.holding)),
"__iter__": BuiltinName(BuiltinFunction(self)),
}
def get_attributes(self):
return self.attributes
def get_returned_object(self, args):
return self.holding
get_iterator = _create_builtin_getter(Iterator)
class Generator(pyobjects.AbstractClass):
def __init__(self, holding=None):
super().__init__()
self.holding = holding
self.attributes = {
"next": BuiltinName(BuiltinFunction(self.holding)),
"__iter__": BuiltinName(BuiltinFunction(get_iterator(self.holding))),
"close": BuiltinName(BuiltinFunction()),
"send": BuiltinName(BuiltinFunction()),
"throw": BuiltinName(BuiltinFunction()),
}
def get_attributes(self):
return self.attributes
def get_returned_object(self, args):
return self.holding
get_generator = _create_builtin_getter(Generator)
class File(BuiltinClass):
def __init__(self, filename=None, mode="r", *args):
self.filename = filename
self.mode = mode
self.args = args
str_object = get_str()
str_list = get_list(get_str())
attributes = {}
def add(name, returned=None, function=None):
builtin = getattr(io.TextIOBase, name, None)
attributes[name] = BuiltinName(
BuiltinFunction(returned=returned, function=function, builtin=builtin)
)
add("__iter__", get_iterator(str_object))
add("__enter__", returned=pyobjects.PyObject(self))
for method in ["next", "read", "readline", "readlines"]:
add(method, str_list)
for method in [
"close",
"flush",
"lineno",
"isatty",
"seek",
"tell",
"truncate",
"write",
"writelines",
]:
add(method)
super().__init__(open, attributes)
get_file = _create_builtin_getter(File)
get_file_type = _create_builtin_type_getter(File)
class Property(BuiltinClass):
def __init__(self, fget=None, fset=None, fdel=None, fdoc=None):
self._fget = fget
self._fdoc = fdoc
attributes = {
"fget": BuiltinName(BuiltinFunction()),
"fset": BuiltinName(pynames.UnboundName()),
"fdel": BuiltinName(pynames.UnboundName()),
"__new__": BuiltinName(BuiltinFunction(function=_property_function)),
}
super().__init__(property, attributes)
def get_property_object(self, args):
if isinstance(self._fget, pyobjects.AbstractFunction):
return self._fget.get_returned_object(args)
def _property_function(args):
parameters = args.get_arguments(["fget", "fset", "fdel", "fdoc"])
return pyobjects.PyObject(Property(parameters[0]))
class Lambda(pyobjects.AbstractFunction):
def __init__(self, node, scope):
super().__init__()
self.node = node
self.arguments = node.args
self.scope = scope
def get_returned_object(self, args):
result = rope.base.evaluate.eval_node(self.scope, self.node.body)
if result is not None:
return result.get_object()
else:
return pyobjects.get_unknown()
def get_module(self):
return self.parent.get_module()
def get_scope(self):
return self.scope
def get_kind(self):
return "lambda"
def get_ast(self):
return self.node
def get_attributes(self):
return {}
def get_name(self):
return "lambda"
def get_param_names(self, special_args=True):
result = [node.arg for node in self.arguments.args if isinstance(node, ast.arg)]
if self.arguments.vararg:
result.append("*" + self.arguments.vararg.arg)
if self.arguments.kwarg:
result.append("**" + self.arguments.kwarg.arg)
return result
@property
def parent(self):
return self.scope.pyobject
class BuiltinObject(BuiltinClass):
def __init__(self):
super().__init__(object, {})
class BuiltinType(BuiltinClass):
def __init__(self):
super().__init__(type, {})
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 _create_builtin(args, creator):
passed = args.get_pynames(["sequence"])[0]
if passed is None:
holding = None
else:
holding = _infer_sequence_for_pyname(passed)
if holding is not None:
return creator(holding)
else:
return creator()
def _open_function(args):
return _create_builtin(args, get_file)
def _range_function(args):
return get_list()
def _reversed_function(args):
return _create_builtin(args, get_iterator)
def _sorted_function(args):
return _create_builtin(args, get_list)
def _super_function(args):
passed_class, passed_self = args.get_arguments(["type", "self"])
if passed_self is None:
return passed_class
else:
# pyclass = passed_self.get_type()
pyclass = passed_class
if isinstance(pyclass, pyobjects.AbstractClass):
supers = pyclass.get_superclasses()
if supers:
return pyobjects.PyObject(supers[0])
return passed_self
def _zip_function(args):
args = args.get_pynames(["sequence"])
objects = []
for seq in args:
if seq is None:
holding = None
else:
holding = _infer_sequence_for_pyname(seq)
objects.append(holding)
tuple = get_tuple(*objects)
return get_list(tuple)
def _enumerate_function(args):
passed = args.get_pynames(["sequence"])[0]
if passed is None:
holding = None
else:
holding = _infer_sequence_for_pyname(passed)
tuple = get_tuple(None, holding)
return get_iterator(tuple)
def _iter_function(args):
passed = args.get_pynames(["sequence"])[0]
if passed is None:
holding = None
else:
holding = _infer_sequence_for_pyname(passed)
return get_iterator(holding)
def _input_function(args):
return get_str()
_initial_builtins = {
"list": BuiltinName(get_list_type()),
"dict": BuiltinName(get_dict_type()),
"tuple": BuiltinName(get_tuple_type()),
"set": BuiltinName(get_set_type()),
"str": BuiltinName(get_str_type()),
"file": BuiltinName(get_file_type()),
"open": BuiltinName(BuiltinFunction(function=_open_function, builtin=open)),
"unicode": BuiltinName(get_str_type()),
"range": BuiltinName(BuiltinFunction(function=_range_function, builtin=range)),
"reversed": BuiltinName(
BuiltinFunction(function=_reversed_function, builtin=reversed)
),
"sorted": BuiltinName(BuiltinFunction(function=_sorted_function, builtin=sorted)),
"super": BuiltinName(BuiltinFunction(function=_super_function, builtin=super)),
"property": BuiltinName(
BuiltinFunction(function=_property_function, builtin=property)
),
"zip": BuiltinName(BuiltinFunction(function=_zip_function, builtin=zip)),
"enumerate": BuiltinName(
BuiltinFunction(function=_enumerate_function, builtin=enumerate)
),
"object": BuiltinName(BuiltinObject()),
"type": BuiltinName(BuiltinType()),
"iter": BuiltinName(BuiltinFunction(function=_iter_function, builtin=iter)),
"raw_input": BuiltinName(
BuiltinFunction(function=_input_function, builtin=raw_input)
),
}
builtins = BuiltinModule("builtins", initial=_initial_builtins)