Struct timely::container::flatcontainer::impls::deduplicate::ConsecutiveOffsetPairs

pub struct ConsecutiveOffsetPairs<R, O = Vec<usize>>
where
    R: Region<Index = (usize, usize)>,
    O: OffsetContainer<usize>,
{ /* private fields */ }

Transform an index of (usize, usize) to a sequence of 0... Requires the pairs to be dense, i.e., (i, j) is followed by (j, k).

Defers to region R for storing items, and uses offset container O to remeber indices. By default, O is Vec<usize>.

Examples

The following example shows that two inserts into a copy region have a collapsible index:

use flatcontainer::impls::deduplicate::{CollapseSequence, ConsecutiveOffsetPairs};
use flatcontainer::{CopyOnto, CopyRegion, Region, StringRegion};
let mut r = <ConsecutiveOffsetPairs<CopyRegion<u8>>>::default();

let index: usize = b"abc"[..].copy_onto(&mut r);
assert_eq!(b"abc", r.index(index));

Trait Implementations

impl<R, O> Clone for ConsecutiveOffsetPairs<R, O>

where R: Clone + Region<Index = (usize, usize)>, O: Clone + OffsetContainer<usize>,

fn clone(&self) -> ConsecutiveOffsetPairs<R, O>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<R, O> Debug for ConsecutiveOffsetPairs<R, O>

where R: Debug + Region<Index = (usize, usize)>, O: Debug + OffsetContainer<usize>,

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

Formats the value using the given formatter.

impl<R, O> Default for ConsecutiveOffsetPairs<R, O>

where R: Region<Index = (usize, usize)>, O: OffsetContainer<usize>,

fn default() -> ConsecutiveOffsetPairs<R, O>

Returns the “default value” for a type.

impl<R, O> Region for ConsecutiveOffsetPairs<R, O>

where R: Region<Index = (usize, usize)>, O: OffsetContainer<usize>,

type ReadItem<'a> = <R as Region>::ReadItem<'a> where ConsecutiveOffsetPairs<R, O>: 'a

The type of the data that one gets out of the container.

type Index = usize

The type to index into the container. Should be treated as an opaque type, even if known.

fn merge_regions<'a>( regions: impl Iterator<Item = &'a ConsecutiveOffsetPairs<R, O>> + Clone ) -> ConsecutiveOffsetPairs<R, O>

where ConsecutiveOffsetPairs<R, O>: 'a,

Construct a region that can absorb the contents of regions in the future.

fn index( &self, index: <ConsecutiveOffsetPairs<R, O> as Region>::Index ) -> <ConsecutiveOffsetPairs<R, O> as Region>::ReadItem<'_>

Index into the container. The index must be obtained by pushing data into the container.

fn reserve_regions<'a, I>(&mut self, regions: I)

where ConsecutiveOffsetPairs<R, O>: 'a, I: Iterator<Item = &'a ConsecutiveOffsetPairs<R, O>> + Clone,

Ensure that the region can absorb the items of regions without reallocation

fn clear(&mut self)

Remove all elements from this region, but retain allocations if possible.

fn heap_size<F>(&self, callback: F)

where F: FnMut(usize, usize),

Heap size, size - capacity