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#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct State {
    index: usize,
    row: u64,
    col: u64,
}

unsafe impl Send for State {}
unsafe impl Sync for State {}

impl Default for State {
    #[inline(always)]
    fn default() -> Self {
        State {
            index: 0usize,
            row: 1u64,
            col: 1u64,
        }
    }
}

impl State {
    #[inline(always)]
    pub fn new() -> Self {
        Self::default()
    }

    #[inline(always)]
    pub fn index(&self) -> usize { self.index }
    #[inline(always)]
    pub fn row(&self) -> u64 { self.row }
    #[inline(always)]
    pub fn col(&self) -> u64 { self.col }

    #[inline]
    pub(crate) fn read(&mut self, is_newline: bool) {
        if is_newline {
            self.row += 1;
            self.col = 1;
        } else if self.index != 0 {
            self.col += 1;
        }

        self.index += 1;
    }
}