def _sanitize_constexpr_value(value):
    if value is None:
        return "NONE"
    if isinstance(value, bool):
        return str(int(value))
    if isinstance(value, int):
        return str(value)
    if isinstance(value, float):
        if value.is_integer():
            return str(int(value))
        return str(value)

    # for lists, tuples, sets - recursively join each
    if isinstance(value, (list, tuple, set)):
        items = sorted(value, key=str) if isinstance(value, set) else value
        sanitized_items = [_sanitize_constexpr_value(item) for item in items]
        joined = "_".join(sanitized_items)
        return joined if joined else "NONE"

    if isinstance(value, str):
        cleaned_value = "".join(ch if ch.isalnum() else "_" for ch in value).strip("_")
        return cleaned_value.upper() if cleaned_value else "NONE"

    cleaned_value = "".join(ch if ch.isalnum() else "_" for ch in str(value)).strip("_")
    return cleaned_value.upper() if cleaned_value else "NONE"


def make_kernel_repr(base_name, config_keys, name_key=None):
    # When name_key is set, the base name is taken from the matching constexpr
    # kwarg at call time (falling back to base_name if missing/empty). Lets a
    # single shared kernel produce caller-specific names in compiled artifacts.
    def _repr(specialization):
        constants = specialization.constants

        name = base_name
        if name_key is not None:
            override = constants.get(name_key, None)
            if override:
                cleaned = "".join(
                    ch if ch.isalnum() or ch == "_" else "_" for ch in str(override)
                )
                if cleaned:
                    name = cleaned

        name_parts = []
        for key in config_keys:
            value = constants.get(key, None)
            symbol = _sanitize_constexpr_value(value)
            name_parts.append(f"{key}_{symbol}")

        if not name_parts:
            return name

        suffix = "_".join(name_parts)
        return f"{name}_{suffix}"

    return _repr