Trait integer_encoding::FixedInt

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

    fn required_space() -> usize;
    fn encode_fixed(self, src: &mut [u8]);
    fn decode_fixed(src: &[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 { ... }
}

FixedInt provides encoding/decoding to and from fixed int representations. The emitted bytestring contains the bytes of the integer in machine endianness.

Associated Constants

const REQUIRED_SPACE: usize

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Required methods

fn required_space() -> usize

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

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

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

fn decode_fixed(src: &[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.

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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.

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Implementations on Foreign Types

impl FixedInt for usize

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

impl FixedInt for u64

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

impl FixedInt for u32

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

impl FixedInt for u16

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

impl FixedInt for isize

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

impl FixedInt for i64

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

impl FixedInt for i32

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

impl FixedInt for i16

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

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Implementors

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