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(* Copyright (C) 1999-2006 Henry Cejtin, Matthew Fluet, Suresh
* Jagannathan, and Stephen Weeks.
* Copyright (C) 1997-2000 NEC Research Institute.
*
* MLton is released under a BSD-style license.
* See the file MLton-LICENSE for details.
*)
signature READER =
sig
type ('a, 'b) reader = 'b -> ('a * 'b) option
(* read as many items as possible (never returns NONE) *)
val list: ('a, 'b) reader -> ('a list, 'b) reader
(* never return NONE *)
(* val tokens: ('a -> bool) -> ('a, 'b) reader -> ('a list list, 'b) reader *)
(* val fields: ('a -> bool) -> ('a, 'b) reader -> ('a list list, 'b) reader *)
val map: ('a -> 'c) -> ('a, 'b) reader -> ('c, 'b) reader
val mapOpt: ('a -> 'c option) -> ('a, 'b) reader -> ('c, 'b) reader
val ignore: ('a -> bool) -> ('a, 'b) reader -> ('a, 'b) reader
(* read excatly N items *)
val readerN: ('a, 'b) reader * int -> ('a list, 'b) reader
val reader2: ('a, 'b) reader -> ('a * 'a, 'b) reader
val reader3: ('a, 'b) reader -> ('a * 'a * 'a, 'b) reader
val reader4: ('a, 'b) reader -> ('a * 'a * 'a * 'a, 'b) reader
end
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