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-rw-r--r--plugins/extraction/scheme.ml20
1 files changed, 9 insertions, 11 deletions
diff --git a/plugins/extraction/scheme.ml b/plugins/extraction/scheme.ml
index a6309e61..76a0c740 100644
--- a/plugins/extraction/scheme.ml
+++ b/plugins/extraction/scheme.ml
@@ -1,9 +1,11 @@
(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
+(* * The Coq Proof Assistant / The Coq Development Team *)
+(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
+(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
+(* // * 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) *)
(************************************************************************)
(*s Production of Scheme syntax. *)
@@ -40,11 +42,7 @@ let preamble _ comment _ usf =
(if usf.mldummy then str "(define __ (lambda (_) __))\n\n" else mt ())
let pr_id id =
- let s = Id.to_string id in
- for i = 0 to String.length s - 1 do
- if s.[i] == '\'' then s.[i] <- '~'
- done;
- str s
+ str @@ String.map (fun c -> if c == '\'' then '~' else c) (Id.to_string id)
let paren = pp_par true
@@ -100,9 +98,9 @@ let rec pp_expr env args =
prlist_with_sep spc (pp_cons_args env) args')
in
if is_coinductive r then paren (str "delay " ++ st) else st
- | MLtuple _ -> error "Cannot handle tuples in Scheme yet."
+ | MLtuple _ -> user_err Pp.(str "Cannot handle tuples in Scheme yet.")
| MLcase (_,_,pv) when not (is_regular_match pv) ->
- error "Cannot handle general patterns in Scheme yet."
+ user_err Pp.(str "Cannot handle general patterns in Scheme yet.")
| MLcase (_,t,pv) when is_custom_match pv ->
let mkfun (ids,_,e) =
if not (List.is_empty ids) then named_lams (List.rev ids) e