Enum EnsuredBufferedOutput 

pub enum EnsuredBufferedOutput<O>
where
    O: Output,
    O::Item: Copy + Default,
{
    AlreadyBuffered(O),
    Buffered(BufferedOutput<O>),
}

Output value that is guaranteed to report itself as buffered.

This enum is returned by BufferedOutput::ensure. It keeps an output that already buffers items as-is, and wraps an unbuffered output in BufferedOutput. Operations delegate to the selected branch.

Variants

AlreadyBuffered(O)

The original output already reported itself as buffered.

Buffered(BufferedOutput<O>)

The original output was wrapped in BufferedOutput.

Trait Implementations

impl<O> Output for EnsuredBufferedOutput<O>

where O: Output, O::Item: Copy + Default,

fn is_buffered(&self) -> bool

Reports that this output is buffered.

unsafe fn write_unchecked( &mut self, input: &[Self::Item], index: usize, count: usize, ) -> Result<usize>

Writes items through the selected output branch.

fn write(&mut self, input: &[Self::Item]) -> Result<usize>

Writes items from the full input slice.

unsafe fn write_fully_unchecked( &mut self, input: &[Self::Item], index: usize, count: usize, ) -> Result<()>

Writes all items from an indexed input range.

fn write_fully(&mut self, input: &[Self::Item]) -> Result<()>

Writes all items from the full input slice.

fn flush(&mut self) -> Result<()>

Flushes pending items through the selected output branch.

type Item = <O as Output>::Item

The item type written to this output.

impl<O> Seekable for EnsuredBufferedOutput<O>

where O: SeekableOutput, <O as Output>::Item: Copy + Default,

fn seek_to(&mut self, position: SeekFrom) -> Result<u64>

Seeks in item offsets through the selected output branch.

type Unit = <O as Output>::Item

The unit type used to measure seek positions and offsets.