Function parser_haskell::haskell::__action421

pub fn __action421<'input, 'err>(
    errors: &'err mut Vec<ErrorRecovery<usize, (usize, &'input str), ()>>, 
    input: &'input str, 
    __0: (usize, Vec<(Expr, Option<Expr>)>, usize), 
    __1: (usize, Expr, usize), 
    __2: (usize, &'input str, usize), 
    __3: (usize, Expr, usize), 
    __4: (usize, &'input str, usize)
) -> Vec<(Expr, Option<Expr>)>