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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \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