Enum EnsuredBufferedInput 

pub enum EnsuredBufferedInput<I>
where
    I: Input,
    I::Item: Copy + Default,
{
    AlreadyBuffered(I),
    Buffered(BufferedInput<I>),
}

Input value that is guaranteed to report itself as buffered.

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

Variants

AlreadyBuffered(I)

The original input already reported itself as buffered.

Buffered(BufferedInput<I>)

The original input was wrapped in BufferedInput.

Trait Implementations

impl<I> Input for EnsuredBufferedInput<I>

where I: Input, I::Item: Copy + Default,

fn is_buffered(&self) -> bool

Reports that this input is buffered.

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

Reads items from the selected input branch.

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

Reads items into the full output slice.

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

Reads items until the indexed output range is full or EOF is reached.

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

Reads items into the full output slice until it is full or EOF is reached.

type Item = <I as Input>::Item

The item type read from this input.

impl<I> Seekable for EnsuredBufferedInput<I>

where I: SeekableInput, <I as Input>::Item: Copy + Default,

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

Seeks in item offsets through the selected input branch.

type Unit = <I as Input>::Item

The unit type used to measure seek positions and offsets.