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(***********************************************************************
v * The Coq Proof Assistant / The Coq Development Team
<O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud
\VV/ *************************************************************
// * This file is distributed under the terms of the
* GNU Lesser General Public License Version 2.1
***********************************************************************)
(*i $Id$ i*)
open Pp
open Pcoq
(** The Coq toplevel loop. *)
(** A buffer for the character read from a channel. We store the command
* entered to be able to report errors without pretty-printing. *)
type input_buffer = {
mutable prompt : unit -> string;
mutable str : string; (** buffer of already read characters *)
mutable len : int; (** number of chars in the buffer *)
mutable bols : int list; (** offsets in str of begining of lines *)
mutable tokens : Pcoq.Gram.parsable; (** stream of tokens *)
mutable start : int } (** stream count of the first char of the buffer *)
(** The input buffer of stdin. *)
val top_buffer : input_buffer
val set_prompt : (unit -> string) -> unit
(** Toplevel error explanation, dealing with locations, Drop, Ctrl-D
May raise only the following exceptions: [Drop] and [End_of_input],
meaning we get out of the Coq loop. *)
val print_toplevel_error : exn -> std_ppcmds
(** Parse and execute a vernac command. *)
val do_vernac : unit -> unit
(** Main entry point of Coq: read and execute vernac commands. *)
val loop : unit -> unit
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