Struct RecordBuffer

pub struct RecordBuffer { /* private fields */ }

A buffer for BCF records. This allows access regions in a sorted BCF file while iterating over it in a single pass. The buffer is implemented as a ringbuffer, such that extension or movement to the right has linear complexity. The buffer does not use any indexed random access. Hence, for getting a region at the very end of the BCF, you will have to wait until all records before have been read.

Implementations

impl RecordBuffer

pub fn new(reader: Reader) -> Self

Create new buffer.

pub fn fetch( &mut self, chrom: &[u8], start: u64, end: u64, ) -> Result<(usize, usize)>

Fill the buffer with variants in the given window. The start coordinate has to be right of the start coordinate of any previous fill operation. Coordinates are 0-based, and end is exclusive. Returns tuple with numbers of added and deleted records compared to previous fetch.

pub fn iter(&self) -> Iter<'_, Record>

Iterate over records that have been fetched with fetch.

pub fn iter_mut(&mut self) -> IterMut<'_, Record>

Iterate over mutable references to records that have been fetched with fetch.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Debug for RecordBuffer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Send for RecordBuffer

impl Sync for RecordBuffer