Trait object::write::WritableBuffer

pub trait WritableBuffer {
    // Required methods
    fn len(&self) -> usize;
    fn reserve(&mut self, size: usize) -> Result<(), ()>;
    fn resize(&mut self, new_len: usize);
    fn write_bytes(&mut self, val: &[u8]);

    // Provided methods
    fn write_pod<T: Pod>(&mut self, val: &T)
       where Self: Sized { ... }
    fn write_pod_slice<T: Pod>(&mut self, val: &[T])
       where Self: Sized { ... }
}

Trait for writable buffer.

Required Methods

fn len(&self) -> usize

Returns position/offset for data to be written at.

Should only be used in debug assertions

fn reserve(&mut self, size: usize) -> Result<(), ()>

Reserves specified number of bytes in the buffer.

This will be called exactly once before writing anything to the buffer, and the given size is the exact total number of bytes that will be written.

fn resize(&mut self, new_len: usize)

Writes zero bytes at the end of the buffer until the buffer has the specified length.

fn write_bytes(&mut self, val: &[u8])

Writes the specified slice of bytes at the end of the buffer.

Provided Methods

fn write_pod<T: Pod>(&mut self, val: &T)

where Self: Sized,

Writes the specified Pod type at the end of the buffer.

fn write_pod_slice<T: Pod>(&mut self, val: &[T])

where Self: Sized,

Writes the specified Pod slice at the end of the buffer.

Implementations

impl<'a> dyn WritableBuffer + 'a

pub fn write<T: Pod>(&mut self, val: &T)

Writes the specified Pod type at the end of the buffer.

pub fn write_slice<T: Pod>(&mut self, val: &[T])

Writes the specified Pod slice at the end of the buffer.

Implementations on Foreign Types

impl WritableBuffer for Vec<u8>

fn len(&self) -> usize

fn reserve(&mut self, size: usize) -> Result<(), ()>

fn resize(&mut self, new_len: usize)

fn write_bytes(&mut self, val: &[u8])

Implementors

impl<W: Write> WritableBuffer for StreamingBuffer<W>