Struct iso7816_tlv::simple::Tag

pub struct Tag(_);

Tag for SIMPLE-TLV data as defined in [ISO7819-4].

The tag field consists of a single byte encoding a tag number from 1 to 254. The values '00' and 'FF' are invalid for tag fields.

Tags can be generated using the TryFrom trait from u8 or hex str.

Example

use std::convert::TryFrom;
use iso7816_tlv::simple::Tag;

assert!(Tag::try_from("80").is_ok());
assert!(Tag::try_from(8u8).is_ok());
assert!(Tag::try_from(0x80).is_ok());
assert!(Tag::try_from(127).is_ok());

assert!(Tag::try_from("er").is_err());
assert!(Tag::try_from("00").is_err());
assert!(Tag::try_from("ff").is_err());

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq<Tag> for Tag

fn eq(&self, other: &Tag) -> bool

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

fn ne(&self, other: &Tag) -> bool

This method tests for !=.

impl Debug for Tag

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl TryFrom<u8> for Tag

type Error = TlvError

The type returned in the event of a conversion error.

fn try_from(v: u8) -> Result<Self, TlvError>

Performs the conversion.

impl<'_> TryFrom<&'_ str> for Tag

type Error = TlvError

The type returned in the event of a conversion error.

fn try_from(v: &str) -> Result<Self, TlvError>

Performs the conversion.