Trait integer_encoding::VarInt

pub trait VarInt: Sized + Copy {
    // Required methods
    fn required_space(self) -> usize;
    fn decode_var(_: &[u8]) -> Self;
    fn encode_var(self, _: &mut [u8]) -> usize;

    // Provided methods
    fn decode_var_vec(v: &Vec<u8>) -> Self { ... }
    fn encode_var_vec(self) -> Vec<u8> { ... }
}

Varint (variable length integer) encoding, as described in https://developers.google.com/protocol-buffers/docs/encoding. Uses zigzag encoding (also described there) for signed integer representation.

Required Methods

fn required_space(self) -> usize

Returns the number of bytes this number needs in its encoded form.

fn decode_var(_: &[u8]) -> Self

Decode a value from the slice.

fn encode_var(self, _: &mut [u8]) -> usize

Encode a value into the slice.

Provided Methods

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

Helper: (bit useless) - Decode value from the Vec.

fn encode_var_vec(self) -> Vec<u8>

Helper: Encode a value and return the encoded form as Vec.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl VarInt for i16

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

impl VarInt for i32

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

impl VarInt for i64

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

impl VarInt for u16

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

impl VarInt for u32

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

impl VarInt for u64

fn required_space(self) -> usize

fn decode_var(src: &[u8]) -> Self

fn encode_var(self, dst: &mut [u8]) -> usize

Implementors