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Source file vernacoptions.ml

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(************************************************************************)
(*         *   The Coq Proof Assistant / The Coq Development Team       *)
(*  v      *         Copyright INRIA, CNRS and contributors             *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(*   \VV/  **************************************************************)
(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
(*         *     (see LICENSE file for the text of the license)         *)
(************************************************************************)

open Util
open Goptions
open Vernacexpr

let vernac_set_option0 ~locality ~stage key opt =
  match opt with
  | OptionUnset -> unset_option_value_gen ~locality ~stage key
  | OptionSetString s -> set_string_option_value_gen ~locality ~stage key s
  | OptionSetInt n -> set_int_option_value_gen ~locality ~stage key (Some n)
  | OptionSetTrue -> set_bool_option_value_gen ~locality ~stage key true

let vernac_set_append_option ~locality ~stage key s =
  set_string_option_append_value_gen ~locality ~stage key s

let vernac_set_option ~locality ~stage table v = match v with
| OptionSetString s ->
  (* We make a special case for warnings and debug flags because appending is
  their natural semantics *)
  if CString.List.equal table ["Warnings"] || CString.List.equal table ["Debug"] then
    vernac_set_append_option ~locality ~stage table s
  else
    let (last, prefix) = List.sep_last table in
    if String.equal last "Append" && not (List.is_empty prefix) then
      vernac_set_append_option ~locality ~stage prefix s
    else
      vernac_set_option0 ~locality ~stage table v
| _ -> vernac_set_option0 ~locality ~stage table v

let iter_table f k v = Goptions.iter_table (Global.env()) f k v

let vernac_add_option = iter_table { aux = fun table -> table.add }

let vernac_remove_option = iter_table { aux = fun table -> table.remove }

let vernac_mem_option = iter_table { aux = fun table -> table.mem }

let vernac_print_option key =
  try (get_ref_table key).print ()
  with Not_found ->
  try (get_string_table key).print ()
  with Not_found ->
  try print_option_value key
  with Not_found -> error_undeclared_key key
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