Struct TaggedValue Copy item path

Helper object for creating FromBer/FromDer types for TAGGED OPTIONAL types

When parsing ContextSpecific (the most common class), see TaggedExplicit and TaggedImplicit alias types.

§Notes

CLASS must be between 0 and 4. See Class for possible values for the CLASS parameter. Constants from this class can be used, but they must be wrapped in braces due to Rust syntax for generics (see example below).

§Examples

To parse a [APPLICATION 0] EXPLICIT INTEGER object:

use asn1_rs::{Class, Error, Explicit, FromBer, Integer, TaggedValue};

let bytes = &[0x60, 0x03, 0x2, 0x1, 0x2];

// If tagged object is present (and has expected tag), parsing succeeds:
let (_, tagged) =
    TaggedValue::<Integer, Error, Explicit, {Class::APPLICATION}, 0>::from_ber(bytes)
        .unwrap();
assert_eq!(tagged, TaggedValue::explicit(Integer::from(2)));