include IncrementalEngine.SYMBOLS with type 'a nonterminal := 'a IT.nonterminal and type 'a terminal := 'a IT.terminal
type 'a symbol =| T : 'a IT.terminal -> 'a symbol| N : 'a IT.nonterminal -> 'a symboltype xsymbol =| X : 'a symbol -> xsymbol
val compare_terminals : 'a IT.terminal -> 'a IT.terminal -> intval compare_nonterminals : 'a IT.nonterminal -> 'a IT.nonterminal -> intval compare_symbols : xsymbol -> xsymbol -> intval compare_productions : int -> int -> intval compare_items : item -> item -> intval incoming_symbol : 'a IT.lr1state -> 'a symbolval items : 'a IT.lr1state -> item listval lhs : int -> xsymbolval rhs : int -> xsymbol listval nullable : 'a IT.nonterminal -> boolval first : 'a IT.nonterminal -> 'a IT.terminal -> boolval xfirst : xsymbol -> 'a IT.terminal -> boolval foreach_terminal : (xsymbol -> 'a -> 'a) -> 'a -> 'aval foreach_terminal_but_error : (xsymbol -> 'a -> 'a) -> 'a -> 'aval feed : 'a symbol -> IncrementalEngine.position -> 'a -> IncrementalEngine.position -> 'a E.env -> 'a E.env