Trait anchor::OutputBuffer

pub trait OutputBuffer {
    type Cursor: Copy;

    // Required methods
    fn output(&mut self, buf: &[u8]);
    fn cur_position(&self) -> Self::Cursor;
    fn update(&mut self, cursor: Self::Cursor, value: u8);
    fn data_since(&self, cursor: Self::Cursor) -> &[u8] ;
}

Trait for output buffers that can accept encoded data.

Message builders accept an argumenet of this type and will output their data in to the buffer.

The buffer must support simple seeking to a previously retrieved position. This is used when calculating checksums.

Required Associated Types

type Cursor: Copy

The cursor type

Required Methods

fn output(&mut self, buf: &[u8])

Append bytes to the buffer

fn cur_position(&self) -> Self::Cursor

Retrieve the cursor representing the position of the last appended byte

fn update(&mut self, cursor: Self::Cursor, value: u8)

Replace the byte at the cursor position with a new value

fn data_since(&self, cursor: Self::Cursor) -> &[u8]

Retrieve a reference to all data pushed after the cursor

Implementations on Foreign Types

impl OutputBuffer for Vec<u8>

type Cursor = usize

fn output(&mut self, buf: &[u8])

fn cur_position(&self) -> Self::Cursor

fn update(&mut self, cursor: Self::Cursor, value: u8)

fn data_since(&self, cursor: Self::Cursor) -> &[u8]

Implementors

impl<const MAX_SIZE: usize> OutputBuffer for ScratchOutput<MAX_SIZE>

type Cursor = usize