Function parser_haskell::haskell::__action456

pub fn __action456<'input, 'err>(
    errors: &'err mut Vec<ErrorRecovery<usize, (usize, &'input str), ()>>, 
    input: &'input str, 
    __0: (usize, Vec<DoItem>, usize), 
    __1: (usize, Option<DoItem>, usize)
) -> Vec<DoItem>