Struct MergeTable 

pub struct MergeTable { /* private fields */ }

Maps an adjacent (left_id, right_id) pair to its MergeRule.

Implementations

impl MergeTable

pub fn build( merges: &[(Vec<u8>, Vec<u8>)], lookup: impl FnMut(&[u8]) -> Option<u32>, ) -> Result<Self>

Builds a merge table from an ordered list of (left_bytes, right_bytes) pairs, resolving each side and the concatenated result to vocab ids via lookup.

lookup is a closure rather than a &Vocab borrow so this stays decoupled from crate::vocab::Vocab’s concrete type – the only thing a merge table needs from a vocab is “what id is this byte string?”.

pub fn get(&self, left_id: u32, right_id: u32) -> Option<MergeRule>

The merge rule for an adjacent pair, if the pair has one.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for MergeTable

fn clone(&self) -> MergeTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergeTable

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

Formats the value using the given formatter.

impl Default for MergeTable

fn default() -> MergeTable

Returns the “default value” for a type.