Struct RollSum 

pub struct RollSum { /* private fields */ }

Rolling sum used by [Bup] for splitting

• https://github.com/bup/bup/blob/0ab7c3a958729b4723e6fe254da771aff608c2bf/lib/bup/bupsplit.c
• https://github.com/bup/bup/blob/0ab7c3a958729b4723e6fe254da771aff608c2bf/lib/bup/bupsplit.h

Implementations

impl RollSum

pub fn with_window(window_len: usize) -> Self

Trait Implementations

impl Chunk for RollSum

type SearchState = RollSumSearchState

SearchState allows searching for the chunk edge to resume without duplicating work already done.

fn to_search_state(&self) -> Self::SearchState

Provide an initial [SearchState] for use with [find_chunk_edge()]. Generally, for each input one should generate a new [SearchState].

fn find_chunk_edge( &self, state: &mut Self::SearchState, data: &[u8], ) -> (Option<usize>, usize)

Find the next “chunk” in data to emit

impl Clone for RollSum

fn clone(&self) -> RollSum

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RollSum

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

Formats the value using the given formatter.

impl Default for RollSum

fn default() -> Self

Returns the “default value” for a type.

impl From<&RollSum> for RollSumIncr

fn from(params: &RollSum) -> Self

Converts to this type from the input type.

impl From<&RollSum> for RollSumSearchState

fn from(s: &RollSum) -> Self

Converts to this type from the input type.

impl From<&RollSum> for RollSumState

fn from(s: &RollSum) -> Self

Converts to this type from the input type.

impl PartialEq for RollSum

fn eq(&self, other: &RollSum) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ToChunkIncr for RollSum

type Incr = RollSumIncr

Incr provides the incrimental interface to this chunking instance

fn to_chunk_incr(&self) -> Self::Incr

to_chunk_incr() returns a ChunkIncr which can be incrimentally fed data and emits chunks.

impl Eq for RollSum

impl StructuralPartialEq for RollSum