Method next

rust/stringzilla.rs:2076–2088

(&mut self)

    type Item = char;

    fn next(&mut self) -> Option<char> {
        // If runes buffer is exhausted, decode next batch
        if self.runes_offset >= self.runes_count {
            self.decode_batch();
            if self.runes_count == 0 {
                return None;
            }
        }

        let codepoint = self.runes[self.runes_offset];
        self.runes_offset += 1;
        char::from_u32(codepoint)
    }

    fn size_hint(&self) -> (usize, Option<usize>) {
        // Lower bound: remaining runes in current buffer