23 lines
678 B
Python
23 lines
678 B
Python
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from typing import Any, Mapping
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from ._compat import copy_with, get_args, is_annotated, is_generic
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def deep_copy_with(t, mapping: Mapping[str, Any]):
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args = get_args(t)
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rest = ()
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if is_annotated(t) and args:
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# If we're dealing with `Annotated`, we only map the first type parameter
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rest = tuple(args[1:])
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args = (args[0],)
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new_args = (
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tuple(
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mapping[a.__name__]
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if hasattr(a, "__name__") and a.__name__ in mapping
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else (deep_copy_with(a, mapping) if is_generic(a) else a)
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for a in args
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)
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+ rest
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)
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return copy_with(t, new_args) if new_args != args else t
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