61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
import warnings
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from typing import Optional
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# NB: Keep this file in sync with enums in aten/src/ATen/core/Reduction.h
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def get_enum(reduction: str) -> int:
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if reduction == "none":
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ret = 0
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elif reduction == "mean":
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ret = 1
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elif reduction == "elementwise_mean":
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warnings.warn(
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"reduction='elementwise_mean' is deprecated. "
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"Please use reduction='mean' instead."
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)
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ret = 1
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elif reduction == "sum":
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ret = 2
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else:
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ret = -1 # TODO: remove once JIT exceptions support control flow
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raise ValueError(f"{reduction} is not a valid value for reduction")
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return ret
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# In order to support previous versions, accept boolean size_average and reduce
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# and convert them into the new constants for now
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# We use these functions in torch/legacy as well, in which case we'll silence the warning
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def legacy_get_string(
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size_average: Optional[bool],
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reduce: Optional[bool],
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emit_warning: bool = True,
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) -> str:
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warning = "size_average and reduce args will be deprecated, please use reduction='{}' instead."
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if size_average is None:
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size_average = True
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if reduce is None:
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reduce = True
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if size_average and reduce:
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ret = "mean"
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elif reduce:
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ret = "sum"
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else:
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ret = "none"
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if emit_warning:
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warnings.warn(warning.format(ret))
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return ret
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def legacy_get_enum(
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size_average: Optional[bool],
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reduce: Optional[bool],
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emit_warning: bool = True,
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) -> int:
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return get_enum(legacy_get_string(size_average, reduce, emit_warning))
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