Struct TagNumber 

pub struct TagNumber(/* private fields */);

ASN.1 tag numbers (i.e. lower 5 bits of a Tag).

From X.690 Section 8.1.2.2:

bits 5 to 1 shall encode the number of the tag as a binary integer with bit 5 as the most significant bit.

This library supports tag numbers ranging from zero to 30 (inclusive), which can be represented as a single identifier octet.

Section 8.1.2.4 describes how to support multi-byte tag numbers, which are encoded by using a leading tag number of 31 (0b11111). This library deliberately does not support this: tag numbers greater than 30 are disallowed.

Implementations

impl TagNumber

pub const N0: Self

Tag number 0

pub const N1: Self

Tag number 1

pub const N2: Self

Tag number 2

pub const N3: Self

Tag number 3

pub const N4: Self

Tag number 4

pub const N5: Self

Tag number 5

pub const N6: Self

Tag number 6

pub const N7: Self

Tag number 7

pub const N8: Self

Tag number 8

pub const N9: Self

Tag number 9

pub const N10: Self

Tag number 10

pub const N11: Self

Tag number 11

pub const N12: Self

Tag number 12

pub const N13: Self

Tag number 13

pub const N14: Self

Tag number 14

pub const N15: Self

Tag number 15

pub const N16: Self

Tag number 16

pub const N17: Self

Tag number 17

pub const N18: Self

Tag number 18

pub const N19: Self

Tag number 19

pub const N20: Self

Tag number 20

pub const N21: Self

Tag number 21

pub const N22: Self

Tag number 22

pub const N23: Self

Tag number 23

pub const N24: Self

Tag number 24

pub const N25: Self

Tag number 25

pub const N26: Self

Tag number 26

pub const N27: Self

Tag number 27

pub const N28: Self

Tag number 28

pub const N29: Self

Tag number 29

pub const N30: Self

Tag number 30

pub const fn new(byte: u8) -> Self

Create a new tag number (const-friendly).

Panics if the tag number is greater than 30. For a fallible conversion, use TryFrom instead.

pub fn application(self, constructed: bool) -> Tag

Create an APPLICATION tag with this tag number.

pub fn context_specific(self, constructed: bool) -> Tag

Create a CONTEXT-SPECIFIC tag with this tag number.

pub fn private(self, constructed: bool) -> Tag

Create a PRIVATE tag with this tag number.

pub fn value(self) -> u8

Get the inner value.

Trait Implementations

impl Clone for TagNumber

fn clone(&self) -> TagNumber

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TagNumber

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

Formats the value using the given formatter.

impl Display for TagNumber

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

Formats the value using the given formatter.

impl From<TagNumber> for u8

fn from(tag_number: TagNumber) -> u8

Converts to this type from the input type.

impl Ord for TagNumber

fn cmp(&self, other: &TagNumber) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TagNumber

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TagNumber

fn partial_cmp(&self, other: &TagNumber) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<u8> for TagNumber

type Error = Error

The type returned in the event of a conversion error.

fn try_from(byte: u8) -> Result<Self>

Performs the conversion.

impl Copy for TagNumber

impl Eq for TagNumber

impl StructuralPartialEq for TagNumber

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte