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(* camlp5r *)
(* plexing.mli,v *)
(* Copyright (c) INRIA 2007-2017 *)
(** Lexing for Camlp5 grammars.
This module defines the Camlp5 lexer type to be used in extensible
grammars (see module [Grammar]). It also provides some useful functions
to create lexers. *)
(** Lexer type *)
type 'te lexer_func = ?loc:Loc.t -> char Stream.t -> 'te Stream.t * location_function
and location_function = int -> Loc.t
(** The type of a function giving the location of a token in the
source from the token number in the stream (starting from zero). *)
module type S = sig
type te
type 'c pattern
val tok_pattern_eq : 'a pattern -> 'b pattern -> ('a, 'b) Util.eq option
val tok_pattern_strings : 'c pattern -> string * string option
val tok_func : te lexer_func
val tok_using : 'c pattern -> unit
val tok_removing : 'c pattern -> unit
val tok_match : 'c pattern -> te -> 'c
val tok_text : 'c pattern -> string
(* State for the comments, at some point we should make it functional *)
module State : sig
type t
val init : unit -> t
val set : t -> unit
val get : unit -> t
val drop : unit -> unit
val get_comments : t -> ((int * int) * string) list
end
end
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