rustfst 0.6.3

Library for constructing, combining, optimizing, and searching weighted finite-state transducers (FSTs).
Documentation 
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use std::fmt::Debug;

use anyhow::Result;

use crate::fst_properties::FstProperties;
use crate::{Semiring, StateId, TrsVec};

pub trait FstOp2<W: Semiring>: Debug {
    // was FstImpl
    fn compute_start(&self) -> Result<Option<StateId>>;
    fn compute_trs_and_final_weight(&self, id: usize) -> Result<(TrsVec<W>, Option<W>)>;

    fn properties(&self) -> FstProperties;
}