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"""Operators with mask."""

from ..expr import Expr
from . import _ffi_api


def masked_fill(x: Expr, mask: Expr, value: Expr):
    """Fill a tensor by a specified value in places defined by a mask.
    Parameters
    ----------
    x : relax.Expr
        The input data to the operator.
    mask : relax.Expr
        The mask.
    value : relax.Expr
        The value to set in the input tensor.
    Returns
    -------
    result : relax.Expr
        The filled tensor.
    """
    values = _ffi_api.full_like(x, value, value.ty.dtype.dtype)  # type: ignore
    return _ffi_api.where(mask, values, x)  # type: ignore