asn1: Add support for IMPLICIT and EXPLICIT
#13735
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Signed-off-by: Facundo Tuesca <[email protected]>
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Signed-off-by: Facundo Tuesca <[email protected]>
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alex
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Oct 25, 2025
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| encoding = None | ||
| for raw_annotation in metadata: | ||
| if isinstance(raw_annotation, Default): | ||
| default = raw_annotation.value | ||
| elif isinstance(raw_annotation, Explicit): | ||
| encoding = declarative_asn1.Encoding.Explicit(raw_annotation.tag) | ||
| elif isinstance(raw_annotation, Implicit): | ||
| encoding = declarative_asn1.Encoding.Implicit(raw_annotation.tag) |
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You need to prohibit duplicates (I guess this is true of defaults as well!)
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| @dataclasses.dataclass(frozen=True) |
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Do we need these, or could we expose Encoding.Explicit and Encoding.Implicit as these types?
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| // Since for optional types the annotations are enforced to be associated with the Option | ||
| // (instead of the inner type), when decoding the inner type we add the annotations of the Option |
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| Encoding::Implicit(n) => asn1::implicit_tag(*n, inner_tag), | ||
| Encoding::Explicit(n) => asn1::explicit_tag(*n), |
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These are currenyly #[doc(hidden)] and thus not part of the stable API. We need to either change that, or represent these a different way.
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@facutuesca Just a friendly ping since we're probably only a few weeks away from 47.0.0. If we need to slip to 48 that's fine of course. |
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This PR adds support for
IMPLICITandEXPLICITfields to the ASN.1 API. The field types must be annotated withasn1.Implicit(tag=X)orasn1.Explicit(tag=Y):Part of #12283