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pyobjectsdef.py
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pyobjectsdef.py
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import rope.base.builtins
import rope.base.codeanalyze
import rope.base.evaluate
import rope.base.libutils
import rope.base.oi.soi
import rope.base.pyscopes
from rope.base import (
pynamesdef,
exceptions,
ast,
astutils,
pyobjects,
fscommands,
arguments,
utils,
)
class PyFunction(pyobjects.PyFunction):
def __init__(self, pycore, ast_node, parent):
rope.base.pyobjects.AbstractFunction.__init__(self)
rope.base.pyobjects.PyDefinedObject.__init__(self, pycore, ast_node, parent)
self.arguments = self.ast_node.args
self.parameter_pyobjects = pynamesdef._Inferred(
self._infer_parameters, self.get_module()._get_concluded_data()
)
self.returned = pynamesdef._Inferred(self._infer_returned)
self.parameter_pynames = None
def _create_structural_attributes(self):
return {}
def _create_concluded_attributes(self):
return {}
def _create_scope(self):
return rope.base.pyscopes.FunctionScope(self.pycore, self, _FunctionVisitor)
def _infer_parameters(self):
pyobjects = rope.base.oi.soi.infer_parameter_objects(self)
self._handle_special_args(pyobjects)
return pyobjects
def _infer_returned(self, args=None):
return rope.base.oi.soi.infer_returned_object(self, args)
def _handle_special_args(self, pyobjects):
if len(pyobjects) == len(self.arguments.args):
if self.arguments.vararg:
pyobjects.append(rope.base.builtins.get_list())
if self.arguments.kwarg:
pyobjects.append(rope.base.builtins.get_dict())
def _set_parameter_pyobjects(self, pyobjects):
if pyobjects is not None:
self._handle_special_args(pyobjects)
self.parameter_pyobjects.set(pyobjects)
def get_parameters(self):
if self.parameter_pynames is None:
result = {}
for index, name in enumerate(self.get_param_names()):
# TODO: handle tuple parameters
result[name] = pynamesdef.ParameterName(self, index)
self.parameter_pynames = result
return self.parameter_pynames
def get_parameter(self, index):
if index < len(self.parameter_pyobjects.get()):
return self.parameter_pyobjects.get()[index]
def get_returned_object(self, args):
return self.returned.get(args)
def get_name(self):
return self.get_ast().name
def get_param_names(self, special_args=True):
# TODO: handle tuple parameters
result = [node.arg for node in self.arguments.args if isinstance(node, ast.arg)]
if special_args:
if self.arguments.vararg:
result.append(self.arguments.vararg.arg)
if self.arguments.kwarg:
result.append(self.arguments.kwarg.arg)
return result
def get_kind(self):
"""Get function type
It returns one of 'function', 'method', 'staticmethod' or
'classmethod' strs.
"""
scope = self.parent.get_scope()
if isinstance(self.parent, PyClass):
for decorator in self.decorators:
pyname = rope.base.evaluate.eval_node(scope, decorator)
if pyname == rope.base.builtins.builtins["staticmethod"]:
return "staticmethod"
if pyname == rope.base.builtins.builtins["classmethod"]:
return "classmethod"
return "method"
return "function"
@property
def decorators(self):
try:
return self.ast_node.decorator_list
except AttributeError:
return getattr(self.ast_node, "decorators", None)
class PyComprehension(pyobjects.PyComprehension):
def __init__(self, pycore, ast_node, parent):
self.visitor_class = _ComprehensionVisitor
rope.base.pyobjects.PyObject.__init__(self, type_="Comp")
rope.base.pyobjects.PyDefinedObject.__init__(self, pycore, ast_node, parent)
def _create_scope(self):
return rope.base.pyscopes.ComprehensionScope(
self.pycore, self, _ComprehensionVisitor
)
def get_kind(self):
return "Comprehension"
class PyClass(pyobjects.PyClass):
def __init__(self, pycore, ast_node, parent):
self.visitor_class = _ClassVisitor
rope.base.pyobjects.AbstractClass.__init__(self)
rope.base.pyobjects.PyDefinedObject.__init__(self, pycore, ast_node, parent)
self.parent = parent
self._superclasses = self.get_module()._get_concluded_data()
def get_superclasses(self):
if self._superclasses.get() is None:
self._superclasses.set(self._get_bases())
return self._superclasses.get()
def get_name(self):
return self.get_ast().name
def _create_concluded_attributes(self):
result = {}
for base in reversed(self.get_superclasses()):
result.update(base.get_attributes())
return result
def _get_bases(self):
result = []
for base_name in self.ast_node.bases:
base = rope.base.evaluate.eval_node(self.parent.get_scope(), base_name)
if (
base is not None
and base.get_object().get_type()
== rope.base.pyobjects.get_base_type("Type")
):
result.append(base.get_object())
return result
def _create_scope(self):
return rope.base.pyscopes.ClassScope(self.pycore, self)
class PyModule(pyobjects.PyModule):
def __init__(self, pycore, source=None, resource=None, force_errors=False):
ignore = pycore.project.prefs.get("ignore_syntax_errors", False)
syntax_errors = force_errors or not ignore
self.has_errors = False
try:
source, node = self._init_source(pycore, source, resource)
except exceptions.ModuleSyntaxError:
self.has_errors = True
if syntax_errors:
raise
else:
source = "\n"
node = ast.parse("\n")
self.source_code = source
self.star_imports = []
self.visitor_class = _GlobalVisitor
self.coding = fscommands.read_str_coding(self.source_code)
super().__init__(pycore, node, resource)
def _init_source(self, pycore, source_code, resource):
filename = "string"
if resource:
filename = resource.path
try:
if source_code is None:
source_bytes = resource.read_bytes()
source_code, _ = fscommands.file_data_to_unicode(source_bytes)
else:
if isinstance(source_code, str):
source_bytes = fscommands.unicode_to_file_data(source_code)
else:
source_bytes = source_code
ast_node = ast.parse(source_bytes, filename=filename)
except SyntaxError as e:
raise exceptions.ModuleSyntaxError(filename, e.lineno, e.msg)
except UnicodeDecodeError as e:
raise exceptions.ModuleSyntaxError(filename, 1, "%s" % (e.reason))
return source_code, ast_node
@utils.prevent_recursion(lambda: {})
def _create_concluded_attributes(self):
result = {}
for star_import in self.star_imports:
result.update(star_import.get_names())
return result
def _create_scope(self):
return rope.base.pyscopes.GlobalScope(self.pycore, self)
@property
@utils.saveit
def lines(self):
"""A `SourceLinesAdapter`"""
return rope.base.codeanalyze.SourceLinesAdapter(self.source_code)
@property
@utils.saveit
def logical_lines(self):
"""A `LogicalLinesFinder`"""
return rope.base.codeanalyze.CachingLogicalLineFinder(self.lines)
def get_name(self):
return rope.base.libutils.modname(self.resource) if self.resource else ""
class PyPackage(pyobjects.PyPackage):
def __init__(self, pycore, resource=None, force_errors=False):
self.resource = resource
init_dot_py = self._get_init_dot_py()
if init_dot_py is not None:
ast_node = pycore.project.get_pymodule(
init_dot_py, force_errors=force_errors
).get_ast()
else:
ast_node = ast.parse("\n")
super().__init__(pycore, ast_node, resource)
def _create_structural_attributes(self):
result = {}
modname = rope.base.libutils.modname(self.resource)
extension_submodules = self.pycore._builtin_submodules(modname)
for name, module in extension_submodules.items():
result[name] = rope.base.builtins.BuiltinName(module)
if self.resource is None:
return result
for name, resource in self._get_child_resources().items():
result[name] = pynamesdef.ImportedModule(self, resource=resource)
return result
def _create_concluded_attributes(self):
result = {}
init_dot_py = self._get_init_dot_py()
if init_dot_py:
init_object = self.pycore.project.get_pymodule(init_dot_py)
result.update(init_object.get_attributes())
return result
def _get_child_resources(self):
result = {}
for child in self.resource.get_children():
if child.is_folder():
result[child.name] = child
elif child.name.endswith(".py") and child.name != "__init__.py":
name = child.name[:-3]
result[name] = child
return result
def _get_init_dot_py(self):
if self.resource is not None and self.resource.has_child("__init__.py"):
return self.resource.get_child("__init__.py")
else:
return None
def _create_scope(self):
return self.get_module().get_scope()
def get_module(self):
init_dot_py = self._get_init_dot_py()
if init_dot_py:
return self.pycore.project.get_pymodule(init_dot_py)
return self
def get_name(self):
return rope.base.libutils.modname(self.resource) if self.resource else ""
class _AnnAssignVisitor(ast.RopeNodeVisitor):
def __init__(self, scope_visitor):
self.scope_visitor = scope_visitor
self.assigned_ast = None
self.type_hint = None
def _AnnAssign(self, node):
self.assigned_ast = node.value
self.type_hint = node.annotation
self.visit(node.target)
def _assigned(self, name, assignment=None):
self.scope_visitor._assigned(name, assignment)
def _Name(self, node):
assignment = pynamesdef.AssignmentValue(
self.assigned_ast, assign_type=True, type_hint=self.type_hint
)
self._assigned(node.id, assignment)
def _Tuple(self, node):
names = astutils.get_name_levels(node)
for name, levels in names:
assignment = None
if self.assigned_ast is not None:
assignment = pynamesdef.AssignmentValue(self.assigned_ast, levels)
self._assigned(name, assignment)
def _Annotation(self, node):
pass
def _Attribute(self, node):
pass
def _Subscript(self, node):
pass
def _Slice(self, node):
pass
class _ExpressionVisitor(ast.RopeNodeVisitor):
def __init__(self, scope_visitor):
self.scope_visitor = scope_visitor
def _assigned(self, name, assignment=None):
self.scope_visitor._assigned(name, assignment)
def _GeneratorExp(self, node):
list_comp = PyComprehension(
self.scope_visitor.pycore, node, self.scope_visitor.owner_object
)
self.scope_visitor.defineds.append(list_comp)
def _SetComp(self, node):
self._GeneratorExp(node)
def _ListComp(self, node):
self._GeneratorExp(node)
def _DictComp(self, node):
self._GeneratorExp(node)
def _NamedExpr(self, node):
_AssignVisitor(self).visit(node.target)
self.visit(node.value)
class _AssignVisitor(ast.RopeNodeVisitor):
def __init__(self, scope_visitor):
self.scope_visitor = scope_visitor
self.assigned_ast = None
def _Assign(self, node):
self.assigned_ast = node.value
for child_node in node.targets:
self.visit(child_node)
_ExpressionVisitor(self.scope_visitor).visit(node.value)
def _assigned(self, name, assignment=None):
self.scope_visitor._assigned(name, assignment)
def _Name(self, node):
assignment = None
if self.assigned_ast is not None:
assignment = pynamesdef.AssignmentValue(self.assigned_ast)
self._assigned(node.id, assignment)
def _Tuple(self, node):
names = astutils.get_name_levels(node)
for name, levels in names:
assignment = None
if self.assigned_ast is not None:
assignment = pynamesdef.AssignmentValue(self.assigned_ast, levels)
self._assigned(name, assignment)
def _Attribute(self, node):
pass
def _Subscript(self, node):
pass
def _Slice(self, node):
pass
class _ScopeVisitor(_ExpressionVisitor):
def __init__(self, pycore, owner_object):
_ExpressionVisitor.__init__(self, scope_visitor=self)
self.pycore = pycore
self.owner_object = owner_object
self.names = {}
self.defineds = []
def get_module(self):
if self.owner_object is not None:
return self.owner_object.get_module()
else:
return None
def _ClassDef(self, node):
pyclass = PyClass(self.pycore, node, self.owner_object)
self.names[node.name] = pynamesdef.DefinedName(pyclass)
self.defineds.append(pyclass)
def _FunctionDef(self, node):
pyfunction = PyFunction(self.pycore, node, self.owner_object)
for decorator in pyfunction.decorators:
if isinstance(decorator, ast.Name) and decorator.id == "property":
if isinstance(self, _ClassVisitor):
type_ = rope.base.builtins.Property(pyfunction)
arg = pynamesdef.UnboundName(
rope.base.pyobjects.PyObject(self.owner_object)
)
def _eval(type_=type_, arg=arg):
return type_.get_property_object(
arguments.ObjectArguments([arg])
)
lineno = utils.guess_def_lineno(self.get_module(), node)
self.names[node.name] = pynamesdef.EvaluatedName(
_eval, module=self.get_module(), lineno=lineno
)
break
else:
self.names[node.name] = pynamesdef.DefinedName(pyfunction)
self.defineds.append(pyfunction)
def _AsyncFunctionDef(self, node):
return self._FunctionDef(node)
def _Assign(self, node):
_AssignVisitor(self).visit(node)
def _AnnAssign(self, node):
_AnnAssignVisitor(self).visit(node)
def _AugAssign(self, node):
pass
def _For(self, node):
self._update_evaluated(node.target, node.iter, ".__iter__().next()")
for child in node.body + node.orelse:
self.visit(child)
def _AsyncFor(self, node):
return self._For(node)
def _assigned(self, name, assignment):
pyname = self.names.get(name, None)
if pyname is None:
pyname = pynamesdef.AssignedName(module=self.get_module())
if isinstance(pyname, pynamesdef.AssignedName):
if assignment is not None:
pyname.assignments.append(assignment)
self.names[name] = pyname
def _update_evaluated(
self, targets, assigned, evaluation="", eval_type=False, type_hint=None
):
result = {}
if isinstance(targets, str):
assignment = pynamesdef.AssignmentValue(assigned, [], evaluation, eval_type)
self._assigned(targets, assignment)
else:
names = astutils.get_name_levels(targets)
for name, levels in names:
assignment = pynamesdef.AssignmentValue(
assigned, levels, evaluation, eval_type
)
self._assigned(name, assignment)
return result
def _With(self, node):
for item in node.items:
if item.optional_vars:
self._update_evaluated(
item.optional_vars, item.context_expr, ".__enter__()"
)
for child in node.body:
self.visit(child)
def _AsyncWith(self, node):
return self._With(node)
def _excepthandler(self, node):
node_name_type = str
if node.name is not None and isinstance(node.name, node_name_type):
type_node = node.type
if isinstance(node.type, ast.Tuple) and type_node.elts:
type_node = type_node.elts[0]
self._update_evaluated(node.name, type_node, eval_type=True)
for child in node.body:
self.visit(child)
def _ExceptHandler(self, node):
self._excepthandler(node)
def _Import(self, node):
for import_pair in node.names:
module_name = import_pair.name
alias = import_pair.asname
first_package = module_name.split(".")[0]
if alias is not None:
imported = pynamesdef.ImportedModule(self.get_module(), module_name)
if not self._is_ignored_import(imported):
self.names[alias] = imported
else:
imported = pynamesdef.ImportedModule(self.get_module(), first_package)
if not self._is_ignored_import(imported):
self.names[first_package] = imported
def _ImportFrom(self, node):
level = 0
if node.level:
level = node.level
imported_module = pynamesdef.ImportedModule(
self.get_module(),
node.module or "",
level,
)
if self._is_ignored_import(imported_module):
return
if len(node.names) == 1 and node.names[0].name == "*":
if isinstance(self.owner_object, PyModule):
self.owner_object.star_imports.append(StarImport(imported_module))
else:
for imported_name in node.names:
imported = imported_name.name
alias = imported_name.asname
if alias is not None:
imported = alias
self.names[imported] = pynamesdef.ImportedName(
imported_module, imported_name.name
)
def _is_ignored_import(self, imported_module):
if not self.pycore.project.prefs.get("ignore_bad_imports", False):
return False
return not isinstance(
imported_module.get_object(), rope.base.pyobjects.AbstractModule
)
def _Global(self, node):
module = self.get_module()
for name in node.names:
if module is not None:
try:
pyname = module[name]
except exceptions.AttributeNotFoundError:
pyname = pynamesdef.AssignedName(node.lineno)
self.names[name] = pyname
class _ComprehensionVisitor(_ScopeVisitor):
def _comprehension(self, node):
self.visit(node.target)
self.visit(node.iter)
def _Name(self, node):
if isinstance(node.ctx, ast.Store):
self.names[node.id] = self._get_pyobject(node)
def _get_pyobject(self, node):
return pynamesdef.AssignedName(lineno=node.lineno, module=self.get_module())
class _GlobalVisitor(_ScopeVisitor):
def __init__(self, pycore, owner_object):
super().__init__(pycore, owner_object)
class _ClassVisitor(_ScopeVisitor):
def __init__(self, pycore, owner_object):
super().__init__(pycore, owner_object)
def _FunctionDef(self, node):
_ScopeVisitor._FunctionDef(self, node)
if len(node.args.args) > 0:
first = node.args.args[0]
new_visitor = None
if isinstance(first, ast.arg):
new_visitor = _ClassInitVisitor(self, first.arg)
if new_visitor is not None:
for child in ast.iter_child_nodes(node):
new_visitor.visit(child)
class _FunctionVisitor(_ScopeVisitor):
def __init__(self, pycore, owner_object):
super().__init__(pycore, owner_object)
self.returned_asts = []
self.generator = False
def _Return(self, node):
if node.value is not None:
self.returned_asts.append(node.value)
def _Yield(self, node):
if node.value is not None:
self.returned_asts.append(node.value)
self.generator = True
class _ClassInitVisitor(_AssignVisitor):
def __init__(self, scope_visitor, self_name):
super().__init__(scope_visitor)
self.self_name = self_name
def _Attribute(self, node):
if not isinstance(node.ctx, ast.Store):
return
if isinstance(node.value, ast.Name) and node.value.id == self.self_name:
if node.attr not in self.scope_visitor.names:
self.scope_visitor.names[node.attr] = pynamesdef.AssignedName(
lineno=node.lineno, module=self.scope_visitor.get_module()
)
if self.assigned_ast is not None:
pyname = self.scope_visitor.names[node.attr]
if isinstance(pyname, pynamesdef.AssignedName):
pyname.assignments.append(
pynamesdef.AssignmentValue(self.assigned_ast)
)
def _Tuple(self, node):
if not isinstance(node.ctx, ast.Store):
return
for child in ast.iter_child_nodes(node):
self.visit(child)
def _Name(self, node):
pass
def _FunctionDef(self, node):
pass
def _ClassDef(self, node):
pass
def _For(self, node):
pass
def _With(self, node):
pass
class StarImport:
def __init__(self, imported_module):
self.imported_module = imported_module
def get_names(self):
result = {}
imported = self.imported_module.get_object()
for name in imported:
if not name.startswith("_"):
result[name] = pynamesdef.ImportedName(self.imported_module, name)
return result