Trait esl01_vlqencoding::VLQDecodeAt

pub trait VLQDecodeAt<T> {
    fn read_vlq_at(&self, offset: usize) -> Result<(T, usize)>;
}

Required methods

fn read_vlq_at(&self, offset: usize) -> Result<(T, usize)>

Read a VLQ byte array from the given offset and decode it to an integer.

Returns Ok((decoded_integer, bytes_read)) on success.

This is similar to VLQDecode::read_vlq. It's for immutable AsRef<[u8]> instead of a mutable io::Read object.

Examples

use vlqencoding::VLQDecodeAt;
use std::io::ErrorKind;

let c = &[120u8, 211, 171, 202, 220, 84, 255];

let x: Result<(u8, _), _> = c.read_vlq_at(0);
assert_eq!(x.unwrap(), (120u8, 1));

let x: Result<(u64, _), _> = c.read_vlq_at(1);
assert_eq!(x.unwrap(), (22742734291u64, 5));

let x: Result<(u64, _), _> = c.read_vlq_at(6);
assert_eq!(x.unwrap_err().kind(), ::std::io::ErrorKind::InvalidData);

let x: Result<(u64, _), _> = c.read_vlq_at(7);
assert_eq!(x.unwrap_err().kind(), ::std::io::ErrorKind::InvalidData);

Loading content...

Implementors

impl<R: AsRef<[u8]>> VLQDecodeAt<usize> for R

fn read_vlq_at(&self, offset: usize) -> Result<(usize, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<isize> for R

fn read_vlq_at(&self, offset: usize) -> Result<(isize, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<i16> for R

fn read_vlq_at(&self, offset: usize) -> Result<(i16, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<i32> for R

fn read_vlq_at(&self, offset: usize) -> Result<(i32, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<i64> for R

fn read_vlq_at(&self, offset: usize) -> Result<(i64, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<i8> for R

fn read_vlq_at(&self, offset: usize) -> Result<(i8, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<u16> for R

fn read_vlq_at(&self, offset: usize) -> Result<(u16, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<u32> for R

fn read_vlq_at(&self, offset: usize) -> Result<(u32, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<u64> for R

fn read_vlq_at(&self, offset: usize) -> Result<(u64, usize)>

impl<R: AsRef<[u8]>> VLQDecodeAt<u8> for R

fn read_vlq_at(&self, offset: usize) -> Result<(u8, usize)>

Loading content...