Function destructure_overrides

mypy/config_parser.py:400–480

Take the new [[tool.mypy.overrides]] section array in the pyproject.toml file, and convert it back to a flatter structure that the existing config_parser can handle. E.g. the following pyproject.toml file: [[tool.mypy.overrides]] module = [ "a.b", "b

(toml_data: dict[str, Any])

def destructure_overrides(toml_data: dict[str, Any]) -> dict[str, Any]:
    """Take the new [[tool.mypy.overrides]] section array in the pyproject.toml file,
    and convert it back to a flatter structure that the existing config_parser can handle.

    E.g. the following pyproject.toml file:

        [[tool.mypy.overrides]]
        module = [
            "a.b",
            "b.*"
        ]
        disallow_untyped_defs = true

        [[tool.mypy.overrides]]
        module = 'c'
        disallow_untyped_defs = false

    Would map to the following config dict that it would have gotten from parsing an equivalent
    ini file:

        {
            "mypy-a.b": {
                disallow_untyped_defs = true,
            },
            "mypy-b.*": {
                disallow_untyped_defs = true,
            },
            "mypy-c": {
                disallow_untyped_defs: false,
            },
        }
    """
    if "overrides" not in toml_data["mypy"]:
        return toml_data

    if not isinstance(toml_data["mypy"]["overrides"], list):
        raise ConfigTOMLValueError(
            "tool.mypy.overrides sections must be an array. Please make "
            "sure you are using double brackets like so: [[tool.mypy.overrides]]"
        )

    result = toml_data.copy()
    for override in result["mypy"]["overrides"]:
        if "module" not in override:
            raise ConfigTOMLValueError(
                "toml config file contains a [[tool.mypy.overrides]] "
                "section, but no module to override was specified."
            )

        if isinstance(override["module"], str):
            modules = [override["module"]]
        elif isinstance(override["module"], list):
            modules = override["module"]
        else:
            raise ConfigTOMLValueError(
                "toml config file contains a [[tool.mypy.overrides]] "
                "section with a module value that is not a string or a list of "
                "strings"