ocaml/camlp4/examples/gen_match_case.ml

27 lines
1.3 KiB
OCaml

(****************************************************************************)
(* *)
(* OCaml *)
(* *)
(* INRIA Rocquencourt *)
(* *)
(* Copyright 2007 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed under *)
(* the terms of the GNU Library General Public License, with the special *)
(* exception on linking described in LICENSE at the top of the OCaml *)
(* source tree. *)
(* *)
(****************************************************************************)
open Camlp4.PreCast;;
let gen patts exprs =
let cases =
List.fold_right2 begin fun patt expr acc ->
let _loc = Loc.merge (Ast.loc_of_patt patt) (Ast.loc_of_expr expr) in
<:match_case< $patt$ -> $expr$ | $acc$ >>
end patts exprs <:match_case@here<>>
in
let _loc = Ast.loc_of_match_case cases in
<:expr< function $cases$ >>
;;