Method next

src/testdrive/src/parser.rs:658–673

(&mut self)

    type Item = (usize, String);

    fn next(&mut self) -> Option<Self::Item> {
        let item = if let Some(next) = self.next.take() {
            next
        } else {
            self.read_one()
        };
        if item.is_some() {
            // Sync `consumed_raw_pos` with `raw_pos` only when the line is
            // actually returned to an external caller. `peek()` advances
            // `raw_pos` via `read_one()` without consuming, so updating
            // `consumed_raw_pos` here keeps it pointing at the end of the most
            // recently consumed line — even if a later line has been peeked.
            self.consumed_raw_pos = self.raw_pos;
        }
        item
    }
}

fn is_sigil(c: Option<char>) -> bool {