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(* $Id$ *)
(*i*)
open Pp
open Pcoq
(*i*)
(* 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 : 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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