Trait aho_corasick::Transitions

pub trait Transitions {
    fn new(depth: u32) -> Self;
    fn goto(&self, alpha: u8) -> StateIdx;
    fn set_goto(&mut self, alpha: u8, si: StateIdx);
    fn heap_bytes(&self) -> usize;

    fn for_each_transition<F>(&self, f: F)
    where
        F: FnMut(u8, StateIdx),
    { ... }
    fn for_each_ok_transition<F>(&self, f: F)
    where
        F: FnMut(u8, StateIdx),
    { ... }
}

An abstraction over state transition strategies.

This is an attempt to let the caller choose the space/time trade offs used for state transitions.

(It’s possible that this interface is merely good enough for just the two implementations in this crate.)

Required methods

fn new(depth: u32) -> Self

Return a new state at the given depth.

fn goto(&self, alpha: u8) -> StateIdx

Return the next state index given the next character.

fn set_goto(&mut self, alpha: u8, si: StateIdx)

Set the next state index for the character given.

fn heap_bytes(&self) -> usize

The memory use in bytes (on the heap) of this set of transitions.

Provided methods

fn for_each_transition<F>(&self, f: F) where
    F: FnMut(u8, StateIdx), 

Iterates over each state

fn for_each_ok_transition<F>(&self, f: F) where
    F: FnMut(u8, StateIdx), 

Iterates over each non-fail state

Implementors

impl Transitions for Dense

impl Transitions for Sparse