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@ -77,9 +77,7 @@ def module_stubs(module: Any) -> ast.Module: |
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if member_name.startswith("__"): |
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pass |
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elif inspect.isclass(member_value): |
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classes.append( |
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class_stubs(member_name, member_value, element_path, types_to_import) |
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) |
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classes.append(class_stubs(member_name, member_value, element_path, types_to_import)) |
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elif inspect.isbuiltin(member_value): |
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functions.append( |
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function_stub( |
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@ -93,16 +91,12 @@ def module_stubs(module: Any) -> ast.Module: |
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else: |
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logging.warning(f"Unsupported root construction {member_name}") |
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return ast.Module( |
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body=[ast.Import(names=[ast.alias(name=t)]) for t in sorted(types_to_import)] |
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+ classes |
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+ functions, |
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body=[ast.Import(names=[ast.alias(name=t)]) for t in sorted(types_to_import)] + classes + functions, |
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type_ignores=[], |
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) |
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def class_stubs( |
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cls_name: str, cls_def: Any, element_path: List[str], types_to_import: Set[str] |
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) -> ast.ClassDef: |
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def class_stubs(cls_name: str, cls_def: Any, element_path: List[str], types_to_import: Set[str]) -> ast.ClassDef: |
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attributes: List[ast.AST] = [] |
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methods: List[ast.AST] = [] |
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magic_methods: List[ast.AST] = [] |
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@ -124,20 +118,11 @@ def class_stubs( |
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] |
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except ValueError as e: |
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if "no signature found" not in str(e): |
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raise ValueError( |
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f"Error while parsing signature of {cls_name}.__init_" |
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) from e |
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elif ( |
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member_value == OBJECT_MEMBERS.get(member_name) |
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or BUILTINS.get(member_name, ()) is None |
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): |
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raise ValueError(f"Error while parsing signature of {cls_name}.__init_") from e |
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elif member_value == OBJECT_MEMBERS.get(member_name) or BUILTINS.get(member_name, ()) is None: |
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pass |
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elif inspect.isdatadescriptor(member_value): |
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attributes.extend( |
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data_descriptor_stub( |
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member_name, member_value, current_element_path, types_to_import |
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) |
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) |
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attributes.extend(data_descriptor_stub(member_name, member_value, current_element_path, types_to_import)) |
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elif inspect.isroutine(member_value): |
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(magic_methods if member_name.startswith("__") else methods).append( |
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function_stub( |
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@ -154,9 +139,7 @@ def class_stubs( |
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target=ast.Name(id=member_name, ctx=AST_STORE), |
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annotation=ast.Subscript( |
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value=_path_to_type("typing", "Tuple"), |
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slice=ast.Tuple( |
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elts=[_path_to_type("str"), ast.Ellipsis()], ctx=AST_LOAD |
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), |
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slice=ast.Tuple(elts=[_path_to_type("str"), ast.Ellipsis()], ctx=AST_LOAD), |
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ctx=AST_LOAD, |
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), |
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value=ast.Constant(member_value), |
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@ -164,9 +147,7 @@ def class_stubs( |
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) |
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) |
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else: |
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logging.warning( |
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f"Unsupported member {member_name} of class {'.'.join(element_path)}" |
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) |
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logging.warning(f"Unsupported member {member_name} of class {'.'.join(element_path)}") |
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doc = inspect.getdoc(cls_def) |
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doc_comment = build_doc_comment(doc) if doc else None |
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@ -174,13 +155,7 @@ def class_stubs( |
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cls_name, |
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bases=[], |
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keywords=[], |
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body=( |
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([doc_comment] if doc_comment else []) |
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+ attributes |
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+ methods |
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+ magic_methods |
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+ constants |
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) |
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body=(([doc_comment] if doc_comment else []) + attributes + methods + magic_methods + constants) |
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or [AST_ELLIPSIS], |
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decorator_list=[_path_to_type("typing", "final")], |
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) |
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@ -239,9 +214,7 @@ def function_stub( |
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arguments_stub(fn_name, fn_def, doc or "", element_path, types_to_import), |
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body or [AST_ELLIPSIS], |
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decorator_list=decorator_list, |
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returns=returns_stub(fn_name, doc, element_path, types_to_import) |
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if doc |
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else None, |
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returns=returns_stub(fn_name, doc, element_path, types_to_import) if doc else None, |
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lineno=0, |
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) |
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@ -253,9 +226,7 @@ def arguments_stub( |
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element_path: List[str], |
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types_to_import: Set[str], |
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) -> ast.arguments: |
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real_parameters: Mapping[str, inspect.Parameter] = inspect.signature( |
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callable_def |
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).parameters |
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real_parameters: Mapping[str, inspect.Parameter] = inspect.signature(callable_def).parameters |
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if callable_name == "__init__": |
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real_parameters = { |
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"self": inspect.Parameter("self", inspect.Parameter.POSITIONAL_ONLY), |
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@ -285,9 +256,7 @@ def arguments_stub( |
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if type.endswith(", optional"): |
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optional_params.add(match[0]) |
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type = type[:-10] |
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parsed_param_types[match[0]] = convert_type_from_doc( |
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type, element_path, types_to_import |
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) |
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parsed_param_types[match[0]] = convert_type_from_doc(type, element_path, types_to_import) |
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# we parse the parameters |
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posonlyargs = [] |
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@ -303,9 +272,7 @@ def arguments_stub( |
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f"The parameter {param.name} of {'.'.join(element_path)} " |
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"has no type definition in the function documentation" |
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) |
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param_ast = ast.arg( |
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arg=param.name, annotation=parsed_param_types.get(param.name) |
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) |
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param_ast = ast.arg(arg=param.name, annotation=parsed_param_types.get(param.name)) |
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default_ast = None |
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if param.default != param.empty: |
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@ -346,9 +313,7 @@ def arguments_stub( |
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) |
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def returns_stub( |
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callable_name: str, doc: str, element_path: List[str], types_to_import: Set[str] |
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) -> Optional[ast.AST]: |
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def returns_stub(callable_name: str, doc: str, element_path: List[str], types_to_import: Set[str]) -> Optional[ast.AST]: |
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m = re.findall(r"^ *:rtype: *([^\n]*) *$", doc, re.MULTILINE) |
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if len(m) == 0: |
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builtin = BUILTINS.get(callable_name) |
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@ -359,22 +324,16 @@ def returns_stub( |
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"has no type definition using :rtype: in the function documentation" |
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) |
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if len(m) > 1: |
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raise ValueError( |
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f"Multiple return type annotations found with :rtype: for {'.'.join(element_path)}" |
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) |
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raise ValueError(f"Multiple return type annotations found with :rtype: for {'.'.join(element_path)}") |
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return convert_type_from_doc(m[0], element_path, types_to_import) |
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def convert_type_from_doc( |
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type_str: str, element_path: List[str], types_to_import: Set[str] |
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) -> ast.AST: |
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def convert_type_from_doc(type_str: str, element_path: List[str], types_to_import: Set[str]) -> ast.AST: |
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type_str = type_str.strip() |
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return parse_type_to_ast(type_str, element_path, types_to_import) |
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def parse_type_to_ast( |
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type_str: str, element_path: List[str], types_to_import: Set[str] |
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) -> ast.AST: |
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def parse_type_to_ast(type_str: str, element_path: List[str], types_to_import: Set[str]) -> ast.AST: |
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# let's tokenize |
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tokens = [] |
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current_token = "" |
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@ -412,26 +371,18 @@ def parse_type_to_ast( |
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else: |
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or_groups[-1].append(e) |
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if any(not g for g in or_groups): |
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raise ValueError( |
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f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}" |
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) |
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raise ValueError(f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}") |
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new_elements: List[ast.AST] = [] |
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for group in or_groups: |
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if len(group) == 1 and isinstance(group[0], str): |
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parts = group[0].split(".") |
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if any(not p for p in parts): |
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raise ValueError( |
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f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}" |
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) |
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raise ValueError(f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}") |
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if len(parts) > 1: |
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types_to_import.add(parts[0]) |
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new_elements.append(_path_to_type(*parts)) |
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elif ( |
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len(group) == 2 |
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and isinstance(group[0], str) |
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and isinstance(group[1], list) |
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): |
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elif len(group) == 2 and isinstance(group[0], str) and isinstance(group[1], list): |
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if group[0] not in GENERICS: |
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raise ValueError( |
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f"Constructor {group[0]} is not supported in type '{type_str}' used by {'.'.join(element_path)}" |
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@ -444,9 +395,7 @@ def parse_type_to_ast( |
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) |
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) |
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else: |
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raise ValueError( |
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f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}" |
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) |
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raise ValueError(f"Not able to parse type '{type_str}' used by {'.'.join(element_path)}") |
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return ( |
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ast.Subscript( |
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value=_path_to_type("typing", "Union"), |
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@ -471,33 +420,21 @@ def build_doc_comment(doc: str) -> Optional[ast.Expr]: |
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return ast.Expr(value=ast.Constant(text)) if text else None |
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def format_with_black(code: str) -> str: |
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result = subprocess.run( |
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["python", "-m", "black", "-t", "py38", "--pyi", "-"], |
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input=code.encode(), |
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capture_output=True, |
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) |
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result.check_returncode() |
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return result.stdout.decode() |
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def format_with_ruff(file: str) -> None: |
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subprocess.check_call(["python", "-m", "ruff", "format", file]) |
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if __name__ == "__main__": |
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parser = argparse.ArgumentParser( |
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description="Extract Python type stub from a python module." |
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) |
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parser.add_argument( |
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"module_name", help="Name of the Python module for which generate stubs" |
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) |
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parser = argparse.ArgumentParser(description="Extract Python type stub from a python module.") |
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parser.add_argument("module_name", help="Name of the Python module for which generate stubs") |
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parser.add_argument( |
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"out", |
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help="Name of the Python stub file to write to", |
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type=argparse.FileType("wt"), |
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) |
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parser.add_argument( |
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"--black", help="Formats the generated stubs using Black", action="store_true" |
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) |
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parser.add_argument("--ruff", help="Formats the generated stubs using Ruff", action="store_true") |
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args = parser.parse_args() |
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stub_content = ast.unparse(module_stubs(importlib.import_module(args.module_name))) |
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if args.black: |
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stub_content = format_with_black(stub_content) |
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args.out.write(stub_content) |
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if args.ruff: |
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format_with_ruff(args.out.name) |
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Tpt
11 months ago