Trait integer_encoding::FixedInt

[+] Show declaration

pub trait FixedInt: Sized + Copy {
    const REQUIRED_SPACE: usize;

    fn required_space() -> usize;
    fn encode_fixed(self, _: &mut [u8]);
    fn decode_fixed(_: &[u8]) -> Self;
    fn encode_fixed_light<'a>(&'a self) -> &'a [u8];

    fn encode_fixed_vec(self) -> Vec<u8> { ... }
    fn decode_fixed_vec(v: &Vec<u8>) -> Self { ... }
}

[−] Expand description

FixedInt provides encoding/decoding to and from fixed int representations. The emitted bytestring contains the bytes of the integer in little-endian order.

Associated Constants

const REQUIRED_SPACE: usize

Required methods

fn required_space() -> usize[−]

Returns how many bytes are required to represent the given type.

fn encode_fixed(self, _: &mut [u8])[−]

Encode a value into the given slice. dst must be exactly REQUIRED_SPACE bytes.

fn decode_fixed(_: &[u8]) -> Self[−]

Decode a value from the given slice. src must be exactly REQUIRED_SPACE bytes.

fn encode_fixed_light<'a>(&'a self) -> &'a [u8][−]

Perform a transmute, i.e. return a "view" into the integer's memory, which is faster than performing a copy.

Provided methods

fn encode_fixed_vec(self) -> Vec<u8>[−]

Helper: Encode the value and return a Vec.

fn decode_fixed_vec(v: &Vec<u8>) -> Self[−]

Helper: Decode the value from the Vec.

Implementations on Foreign Types

impl FixedInt for usize[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> usize

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for u64[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> u64

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for u32[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> u32

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for u16[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> u16

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for isize[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> isize

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for i64[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> i64

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for i32[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> i32

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

impl FixedInt for i16[−]

[+] Show hidden undocumented items

const REQUIRED_SPACE: usize

fn required_space() -> usize

fn encode_fixed_light<'a>(&'a self) -> &'a [u8]

fn encode_fixed(self, dst: &mut [u8])

fn decode_fixed(src: &[u8]) -> i16

fn encode_fixed_vec(self) -> Vec<u8>

fn decode_fixed_vec(v: &Vec<u8>) -> Self

Implementors