Function rustfst::algorithms::project_input

pub fn project_input<F: ExpandedFst + MutableFst>(
    fst: &mut F
) -> Result<(), Error>

This operation projects an FST onto its domain or range by copying each arc’s input label to its output label.

Example

use rustfst::utils::{acceptor, transducer};
use rustfst::semirings::{Semiring, IntegerWeight};
use rustfst::fst_impls::VectorFst;
use rustfst::algorithms::project;

let mut fst : VectorFst<IntegerWeight> = transducer(vec![2].into_iter(), vec![3].into_iter()).unwrap();
project(&mut fst, true).unwrap();

assert_eq!(fst, acceptor(vec![2].into_iter()).unwrap());