Struct RawReader 

pub struct RawReader<'a, T: SpanWeight<Slab> + HasPos> { /* private fields */ }

A low-level reader for sequential byte access across a multi-slab tree.

Unlike column iterators, RawReader reads raw bytes rather than decoded values. It is used internally by Automerge to access byte fields (e.g. actor IDs, string payloads) that are stored as consecutive byte ranges across slab boundaries.

Obtain a RawReader via ColumnData::raw_reader.

Implementations

impl<'a, T: SpanWeight<Slab> + HasPos> RawReader<'a, T>

pub fn empty() -> RawReader<'static, T>

pub fn read_next(&mut self, length: usize) -> Result<&'a [u8], ReadRawError>

Read a slice out of a set of slabs

Returns an error if:

• The read would cross a slab boundary
• The read would go past the end of the data

pub fn seek_to(&mut self, advance: usize)

pub fn suspend(&self) -> usize

Returns the current byte position, which can be passed to ColumnData::raw_reader to reconstruct a RawReader at the same position.

Trait Implementations

impl<'a, T: Clone + SpanWeight<Slab> + HasPos> Clone for RawReader<'a, T>

fn clone(&self) -> RawReader<'a, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug + SpanWeight<Slab> + HasPos> Debug for RawReader<'a, T>

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

Formats the value using the given formatter.

impl<'a, T: Default + SpanWeight<Slab> + HasPos> Default for RawReader<'a, T>

fn default() -> RawReader<'a, T>

Returns the “default value” for a type.