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pub struct TaggedValue<T, TagKind, const CLASS: u8, const TAG: u32> { /* private fields */ }
Available on crate feature mtls only.
Expand description

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.

Examples

To parse a [APPLICATION 0] EXPLICIT INTEGER object:

use asn1_rs::{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, Explicit, 0b01, 0>::from_ber(bytes).unwrap();
assert_eq!(tagged, TaggedValue::explicit(Integer::from(2)));

Implementations

Consumes the TaggedParser, returning the wrapped value.

Constructs a new EXPLICIT TaggedParser with the provided value

Constructs a new IMPLICIT TaggedParser with the provided value

Trait Implementations

Converts this type into a shared reference of the (usually inferred) input type.

Formats the value using the given formatter. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Get the length of the object, when encoded Read more

Attempt to write the DER header to this writer.

Attempt to write the DER content (all except header) to this writer.

Write the DER encoded representation to a newly allocated Vec<u8>.

Similar to using to_vec, but uses provided values without changes. This can generate an invalid encoding for a DER object. Read more

Attempt to write the DER encoded representation (header and content) into this writer. Read more

Similar to using to_der, but uses provided values without changes. This can generate an invalid encoding for a DER object. Read more

Get the length of the object, when encoded Read more

Attempt to write the DER encoded representation (header and content) into this writer. Read more

Attempt to write the DER header to this writer.

Attempt to write the DER content (all except header) to this writer.

Write the DER encoded representation to a newly allocated Vec<u8>.

Similar to using to_vec, but uses provided values without changes. This can generate an invalid encoding for a DER object. Read more

Similar to using to_der, but uses provided values without changes. This can generate an invalid encoding for a DER object. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Convert self to an UncasedStr.

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Is the provided Tag decodable as a variant of this CHOICE?

Returns the argument unchanged.

Attempt to parse input bytes into a BER object

Attempt to parse input bytes into a DER object (enforcing constraints)

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Converts self into a collection.

Should always be Self

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more