code_free_ctor_visitor.py

# The MIT License (MIT).
#
# Copyright (c) 2023-2025 Almaz Ilaletdinov <a.ilaletdinov@yandex.ru>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
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"""CodeFreeCtorVisitor."""

import ast
from typing import final


@final
class CodeFreeCtorVisitor(ast.NodeVisitor):
    """CodeFreeCtorVisitor."""

    def __init__(self, options) -> None:
        """Ctor."""
        self.problems: list[tuple[int, int, str]] = []

    def visit_ClassDef(self, node: ast.ClassDef) -> None:  # noqa: N802, WPS231, C901
        """Visit by classes.

        :param node: ast.ClassDef
        """
        for elem in node.body:
            if not isinstance(elem, ast.FunctionDef) and not isinstance(elem, ast.AsyncFunctionDef):
                continue
            if elem.name == '__init__':
                for body_elem in elem.body:
                    self._iter_ctor_ast(body_elem)
        self.generic_visit(node)

    def _iter_ctor_ast(self, node):
        if not isinstance(node, (ast.Return, ast.Assign, ast.Expr, ast.AnnAssign)):
            self.problems.append((node.lineno, node.col_offset, 'PEO100 Ctor contain code'))