Struct LengthPrefixedBuffer 

pub(crate) struct LengthPrefixedBuffer<'a> {
    pub(crate) buf: &'a mut Vec<u8>,
    len_offset: usize,
    size_len: ListLength,
}

Tracks encoding a length-delimited structure in a single pass.

Fields

buf: &'a mut Vec<u8>

len_offset: usize

size_len: ListLength

Implementations

impl<'a> LengthPrefixedBuffer<'a>

pub(crate) fn new(size_len: ListLength, buf: &'a mut Vec<u8>) -> Self

Inserts a dummy length into buf, and remembers where it went.

After this, the body of the length-delimited structure should be appended to LengthPrefixedBuffer::buf. The length header is corrected in LengthPrefixedBuffer::drop.

Trait Implementations

impl Drop for LengthPrefixedBuffer<'_>

fn drop(&mut self)

Goes back and corrects the length previously inserted at the start of the structure.