Method restore_state

regex/src/dfa.rs:1347–1354

Restores the given state back into the cache, and returns a pointer to it.

(&mut self, state: State)

    /// Restores the given state back into the cache, and returns a pointer
    /// to it.
    fn restore_state(&mut self, state: State) -> Option<StatePtr> {
        // If we've already stored this state, just return a pointer to it.
        // None will be the wiser.
        if let Some(si) = self.cache.compiled.get_ptr(&state) {
            return Some(si);
        }
        self.add_state(state)
    }

    /// Returns the next state given the current state si and current byte
    /// b. {qcur,qnext} are used as scratch space for storing ordered NFA