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#   http://www.apache.org/licenses/LICENSE-2.0
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"""Function defintiions."""
from enum import IntEnum
from .expr import RelayExpr
from . import _ffi_api


class CallingConv(IntEnum):
    """Possible kinds of calling conventions."""
    DEFAULT = 0
    C_PACKED_FUNC = 1
    DEVICE_KERNEL_LAUNCH = 2


class BaseFunc(RelayExpr):
    """Base class of all functions."""
    @property
    def attrs(self):
        """Return the attrs member of the function.
        """
        return _ffi_api.BaseFunc_Attrs(self)