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22 lines
929 B
22 lines
929 B
5 months ago
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from torch.fx.proxy import Proxy
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from ._compatibility import compatibility
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@compatibility(is_backward_compatible=False)
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def annotate(val, type):
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# val could be either a regular value (not tracing)
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# or fx.Proxy (tracing)
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if isinstance(val, Proxy):
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if val.node.type:
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raise RuntimeError(f"Tried to annotate a value that already had a type on it!"
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f" Existing type is {val.node.type} "
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f"and new type is {type}. "
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f"This could happen if you tried to annotate a function parameter "
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f"value (in which case you should use the type slot "
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f"on the function signature) or you called "
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f"annotate on the same value twice")
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else:
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val.node.type = type
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return val
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else:
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return val
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