import numpy as np

class IndexEngine:
    over_size_threshold: bool
    def __init__(self, vgetter, n: int): ...
    def __contains__(self, val: object) -> bool: ...
    # -> int | slice | np.ndarray[bool]
    def get_loc(self, val: object) -> int | slice | np.ndarray: ...
    def sizeof(self, deep: bool = False) -> int: ...
    def __sizeof__(self) -> int: ...
    @property
    def is_unique(self) -> bool: ...
    @property
    def is_monotonic_increasing(self) -> bool: ...
    @property
    def is_monotonic_decreasing(self) -> bool: ...
    def get_backfill_indexer(
        self, other: np.ndarray, limit: int | None = ...
    ) -> np.ndarray: ...
    def get_pad_indexer(
        self, other: np.ndarray, limit: int | None = ...
    ) -> np.ndarray: ...
    @property
    def is_mapping_populated(self) -> bool: ...
    def clear_mapping(self): ...
    def get_indexer(self, values: np.ndarray) -> np.ndarray: ...  # np.ndarray[np.intp]
    def get_indexer_non_unique(
        self,
        targets: np.ndarray,
    ) -> tuple[
        np.ndarray,  # np.ndarray[np.intp]
        np.ndarray,  # np.ndarray[np.intp]
    ]: ...

class Float64Engine(IndexEngine): ...
class Float32Engine(IndexEngine): ...
class Int64Engine(IndexEngine): ...
class Int32Engine(IndexEngine): ...
class Int16Engine(IndexEngine): ...
class Int8Engine(IndexEngine): ...
class UInt64Engine(IndexEngine): ...
class UInt32Engine(IndexEngine): ...
class UInt16Engine(IndexEngine): ...
class UInt8Engine(IndexEngine): ...
class ObjectEngine(IndexEngine): ...
class DatetimeEngine(Int64Engine): ...
class TimedeltaEngine(DatetimeEngine): ...
class PeriodEngine(Int64Engine): ...

class BaseMultiIndexCodesEngine:
    levels: list[np.ndarray]
    offsets: np.ndarray  # ndarray[uint64_t, ndim=1]
    def __init__(
        self,
        levels: list[np.ndarray],  # all entries hashable
        labels: list[np.ndarray],  # all entries integer-dtyped
        offsets: np.ndarray,  # np.ndarray[np.uint64, ndim=1]
    ): ...
    def get_indexer(
        self,
        target: np.ndarray,  # np.ndarray[object]
    ) -> np.ndarray: ...  # np.ndarray[np.intp]
    def _extract_level_codes(self, target: object): ...
    def get_indexer_with_fill(
        self,
        target: np.ndarray,  # np.ndarray[object] of tuples
        values: np.ndarray,  # np.ndarray[object] of tuples
        method: str,
        limit: int | None,
    ) -> np.ndarray: ...  # np.ndarray[np.int64]