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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2019 *)
(* <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 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
Require Coq.extraction.Extraction.
(** Extraction to Ocaml : use of basic Ocaml types *)
Extract Inductive bool => bool [ true false ].
Extract Inductive option => option [ Some None ].
Extract Inductive unit => unit [ "()" ].
Extract Inductive list => list [ "[]" "( :: )" ].
Extract Inductive prod => "( * )" [ "" ].
(** NB: The "" above is a hack, but produce nicer code than "(,)" *)
(** Mapping sumbool to bool and sumor to option is not always nicer,
but it helps when realizing stuff like [lt_eq_lt_dec] *)
Extract Inductive sumbool => bool [ true false ].
Extract Inductive sumor => option [ Some None ].
(** Restore laziness of andb, orb.
NB: without these Extract Constant, andb/orb would be inlined
by extraction in order to have laziness, producing inelegant
(if ... then ... else false) and (if ... then true else ...).
*)
Extract Inlined Constant andb => "(&&)".
Extract Inlined Constant orb => "(||)".
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