Method top

src/navigate.rs:162–168

(&self)

    }

    fn top(&self) -> Option<(&NavigationPosition, &'static str)> {
        if self.position_stack.is_empty() {
            return None;
        }
        let last = self.position_stack.len()-1;
        return Some( (&self.position_stack[last], self.command_stack[last]) );
    }

    pub fn get_navigation_mathml<'a>(&self, mathml: Element<'a>) -> Result<(Element<'a>, usize)> {
        if self.position_stack.is_empty() {