Enum asn1_cereal::tag::Len

pub enum Len {
    Def(u64),
    Indef,
}

An enum representing the length of an ASN.1 element.

Variants

Def(u64)

A Definite length element.

Indef

An Indefinite length element, not known before decoding.

Methods

impl Len

fn read_indef_end<I: Iterator<Item=Result<u8>>>(bytes: &mut I) -> Result<(), DecodeError>

Given an iterator, read an indefinite length terminator.

fn write_indef_end<W: Write>(writer: &mut W) -> Result<(), EncodeError>

Write an indefinite length terminator to the given writer.

fn read_len<I: Iterator<Item=Result<u8>>>(bytes: &mut I) -> Result<Self, DecodeError>

Given an iterator over a byte stream, read and return the ASN.1 element length.

fn write_len<W: Write>(self, writer: &mut W) -> Result<(), EncodeError>

Write this ASN.1 length to the given writer.

fn as_num(self) -> Option<LenNum>

A short-hand function to quickly get an Option.

Trait Implementations

impl PartialEq for Len

fn eq(&self, __arg_0: &Len) -> bool

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

fn ne(&self, __arg_0: &Len) -> bool

This method tests for !=.

impl Debug for Len

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Len

fn clone(&self) -> Len

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Len

impl From<Option<LenNum>> for Len

fn from(len: Option<LenNum>) -> Self

Performs the conversion.

impl PartialOrd<Len> for Len

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl PartialEq<LenNum> for Len

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

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

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

This method tests for !=.

impl PartialOrd<LenNum> for Len

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Display for Len

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

Formats the value using the given formatter.