summaryrefslogtreecommitdiff
path: root/toplevel/coqloop.mli
blob: 00554da308fb691559d6a21cb6616a6be0173a6d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016     *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

open Pp

(** 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 : Exninfo.iexn -> std_ppcmds

(** Parse and execute one vernac command. *)

val do_vernac : unit -> unit

(** Main entry point of Coq: read and execute vernac commands. *)

val loop : unit -> unit