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|
(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
(*i $Id$ i*)
open Pp
open Names
open Nameops
open Miniml
open Table
open Mlutil
open Ocaml
open Nametab
open Util
(*s Modules considerations *)
let current_module = ref None
let sp_of_r r = match r with
| ConstRef sp -> sp
| IndRef (sp,_) -> sp
| ConstructRef ((sp,_),_) -> sp
| _ -> assert false
let qualid_of_dirpath d =
let dir,id = split_dirpath d in
make_qualid dir id
(* [long_module r] computes the dirpath of the module of the global
reference [r]. The difficulty comes from the possible section names
at the beginning of the dirpath (due to Remark). *)
let long_module r =
let rec check_module d =
try
locate_loaded_library (qualid_of_dirpath d)
with Not_found ->
let d' =
try
dirpath_prefix d
with _ -> errorlabstrm "long_module_message"
(str "Can't find the module of" ++ spc () ++
Printer.pr_global r)
in check_module d'
in check_module (dirpath (sp_of_r r))
(* From a valid module dirpath [d], we check if [r] belongs to this module. *)
let is_long_module d r =
let dir = repr_dirpath d
and dir' = repr_dirpath (dirpath (sp_of_r r)) in
let l = List.length dir
and l' = List.length dir' in
if l' < l then false
else dir = snd (list_chop (l'-l) dir')
let short_module r =
snd (split_dirpath (long_module r))
let module_option r =
let m = short_module r in
if Some m = !current_module then ""
else (String.capitalize (string_of_id m)) ^ "."
let check_ml r d =
if to_inline r then
try
find_ml_extraction r
with Not_found -> d
else d
(*s Tables of global renamings *)
let keywords = ref Idset.empty
let global_ids = ref Idset.empty
let renamings = Hashtbl.create 97
let cache r f =
try Hashtbl.find renamings r
with Not_found -> let id = f r in Hashtbl.add renamings r id; id
(*s Renaming issues at toplevel *)
module ToplevelParams = struct
let toplevel = true
let globals () = Idset.empty
let rename_global r = Termops.id_of_global (Global.env()) r
let pp_type_global = Printer.pr_global
let pp_global = Printer.pr_global
end
(*s Renaming issues for a monolithic extraction. *)
module MonoParams = struct
let toplevel = false
let globals () = !global_ids
let rename_global_id id =
let id' = rename_id id !global_ids in
global_ids := Idset.add id' !global_ids;
id'
let rename_type_global r =
cache r
(fun r ->
let id = Termops.id_of_global (Global.env()) r in
rename_global_id (lowercase_id id))
let rename_global r =
cache r
(fun r ->
let id = Termops.id_of_global (Global.env()) r in
match r with
| ConstructRef _ -> rename_global_id (uppercase_id id)
| _ -> rename_global_id (lowercase_id id))
let pp_type_global r =
string (check_ml r (string_of_id (rename_type_global r)))
let pp_global r =
string (check_ml r (string_of_id (rename_global r)))
end
(*s Renaming issues in a modular extraction. *)
module ModularParams = struct
let toplevel = false
let globals () = !global_ids
let clash r id =
try
let _ = locate (make_qualid (dirpath (sp_of_r r)) id)
in true
with _ -> false
let rename_global_id r id id' prefix =
let id' =
if (Idset.mem id' !keywords) || (id <> id' && clash r id') then
id_of_string (prefix^(string_of_id id))
else id'
in global_ids := Idset.add id' !global_ids; id'
let rename_type_global r =
cache r
(fun r ->
let id = Termops.id_of_global (Global.env()) r in
rename_global_id r id (lowercase_id id) "coq_")
let rename_global r =
cache r
(fun r ->
let id = Termops.id_of_global (Global.env()) r in
match r with
| ConstructRef _ -> rename_global_id r id (uppercase_id id) "Coq_"
| _ -> rename_global_id r id (lowercase_id id) "coq_")
let pp_type_global r =
string
(check_ml r ((module_option r)^(string_of_id (rename_type_global r))))
let pp_global r =
string
(check_ml r ((module_option r)^(string_of_id (rename_global r))))
end
module ToplevelPp = Ocaml.Make(ToplevelParams)
module OcamlMonoPp = Ocaml.Make(MonoParams)
module OcamlModularPp = Ocaml.Make(ModularParams)
module HaskellMonoPp = Haskell.Make(MonoParams)
module HaskellModularPp = Haskell.Make(ModularParams)
(*s Extraction to a file. *)
let init_global_ids lang =
Hashtbl.clear renamings;
keywords :=
(match lang with
| "ocaml" -> Ocaml.keywords
| "haskell" -> Haskell.keywords
| _ -> assert false);
global_ids := !keywords
let extract_to_file f prm decls =
current_module := prm.mod_name;
init_global_ids prm.lang;
let preamble,pp_decl = match prm.lang,prm.mod_name with
| "ocaml", None -> Ocaml.preamble, OcamlMonoPp.pp_decl
| "ocaml", _ -> Ocaml.preamble, OcamlModularPp.pp_decl
| "haskell", None -> Haskell.preamble, HaskellMonoPp.pp_decl
| "haskell", _ -> Haskell.preamble, HaskellModularPp.pp_decl
| _ -> assert false
in
let cout = open_out f in
let ft = Pp_control.with_output_to cout in
if decls <> [] then pp_with ft (hv 0 (preamble prm));
begin
try
List.iter (fun d -> msgnl_with ft (pp_decl d)) decls
with e ->
pp_flush_with ft (); close_out cout; raise e
end;
pp_flush_with ft ();
close_out cout
|
