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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: modops.ml 9872 2007-05-30 16:01:18Z soubiran $ i*)
(*i*)
open Util
open Pp
open Names
open Univ
open Term
open Declarations
open Environ
(*i*)
let error_not_a_constant l =
error ("\""^(string_of_label l)^"\" is not a constant")
let error_not_a_functor _ = error "Application of not a functor"
let error_incompatible_modtypes _ _ = error "Incompatible module types"
let error_not_equal _ _ = error "Not equal modules"
let error_not_match l _ =
error ("Signature components for label "^string_of_label l^" do not match")
let error_no_such_label l = error ("No such label "^string_of_label l)
let error_no_such_label_sub l l1 =
let l1 = string_of_mp l1 in
error ("The field "^
string_of_label l^" is missing in "^l1^".")
let error_not_a_module_loc loc s =
user_err_loc (loc,"",str ("\""^string_of_label s^"\" is not a module"))
let error_not_a_module s = error_not_a_module_loc dummy_loc s
let error_with_incorrect l =
error ("Incorrect constraint for label \""^(string_of_label l)^"\"")
let error_a_generative_module_expected l =
error ("The module " ^ string_of_label l ^ " is not generative. Only " ^
"component of generative modules can be changed using the \"with\" " ^
"construct.")
let error_signature_expected mtb =
error "Signature expected"
let error_application_to_not_path _ = error "Application to not path"
let destr_functor env mtb =
match mtb with
| SEBfunctor (arg_id,arg_t,body_t) ->
(arg_id,arg_t,body_t)
| _ -> error_not_a_functor mtb
let is_functor = function
| SEBfunctor (arg_id,arg_t,body_t) -> true
| _ -> false
let module_body_of_type mp mtb =
{ mod_mp = mp;
mod_type = mtb.typ_expr;
mod_type_alg = mtb.typ_expr_alg;
mod_expr = None;
mod_constraints = mtb.typ_constraints;
mod_delta = mtb.typ_delta;
mod_retroknowledge = []}
let check_modpath_equiv env mp1 mp2 =
if mp1=mp2 then () else
(* let mb1=lookup_module mp1 env in
let mb2=lookup_module mp2 env in
if (delta_of_mp mb1.mod_delta mp1)=(delta_of_mp mb2.mod_delta mp2)
then ()
else*) error_not_equal mp1 mp2
let rec add_signature mp sign resolver env =
let add_one env (l,elem) =
let kn = make_kn mp empty_dirpath l in
let con = constant_of_kn kn in
let mind = mind_of_delta resolver (mind_of_kn kn) in
match elem with
| SFBconst cb ->
(* let con = constant_of_delta resolver con in*)
Environ.add_constant con cb env
| SFBmind mib ->
(* let mind = mind_of_delta resolver mind in*)
Environ.add_mind mind mib env
| SFBmodule mb -> add_module mb env
(* adds components as well *)
| SFBmodtype mtb -> Environ.add_modtype mtb.typ_mp mtb env
in
List.fold_left add_one env sign
and add_module mb env =
let mp = mb.mod_mp in
let env = Environ.shallow_add_module mp mb env in
match mb.mod_type with
| SEBstruct (sign) ->
add_signature mp sign mb.mod_delta env
| SEBfunctor _ -> env
| _ -> anomaly "Modops:the evaluation of the structure failed "
let strengthen_const env mp_from l cb resolver =
match cb.const_opaque, cb.const_body with
| false, Some _ -> cb
| true, Some _
| _, None ->
let con = make_con mp_from empty_dirpath l in
(* let con = constant_of_delta resolver con in*)
let const = Const con in
let const_subs = Some (Declarations.from_val const) in
{cb with
const_body = const_subs;
const_opaque = false;
}
let rec strengthen_mod env mp_from mp_to mb =
if Declarations.mp_in_delta mb.mod_mp mb.mod_delta then
mb
else
match mb.mod_type with
| SEBstruct (sign) ->
let resolve_out,sign_out =
strengthen_sig env mp_from sign mp_to mb.mod_delta in
{ mb with
mod_expr = Some (SEBident mp_to);
mod_type = SEBstruct(sign_out);
mod_type_alg = mb.mod_type_alg;
mod_constraints = mb.mod_constraints;
mod_delta = resolve_out(*add_mp_delta_resolver mp_from mp_to
(add_delta_resolver mb.mod_delta resolve_out)*);
mod_retroknowledge = mb.mod_retroknowledge}
| SEBfunctor _ -> mb
| _ -> anomaly "Modops:the evaluation of the structure failed "
and strengthen_sig env mp_from sign mp_to resolver =
match sign with
| [] -> empty_delta_resolver,[]
| (l,SFBconst cb) :: rest ->
let item' =
l,SFBconst (strengthen_const env mp_from l cb resolver) in
let resolve_out,rest' =
strengthen_sig env mp_from rest mp_to resolver in
resolve_out,item'::rest'
| (_,SFBmind _ as item):: rest ->
let resolve_out,rest' =
strengthen_sig env mp_from rest mp_to resolver in
resolve_out,item::rest'
| (l,SFBmodule mb) :: rest ->
let mp_from' = MPdot (mp_from,l) in
let mp_to' = MPdot(mp_to,l) in
let mb_out =
strengthen_mod env mp_from' mp_to' mb in
let item' = l,SFBmodule (mb_out) in
let env' = add_module mb_out env in
let resolve_out,rest' =
strengthen_sig env' mp_from rest mp_to resolver in
resolve_out
(*add_delta_resolver resolve_out mb.mod_delta*),
item':: rest'
| (l,SFBmodtype mty as item) :: rest ->
let env' = add_modtype
(MPdot(mp_from,l)) mty env
in
let resolve_out,rest' =
strengthen_sig env' mp_from rest mp_to resolver in
resolve_out,item::rest'
let strengthen env mtb mp =
match mtb.typ_expr with
| SEBstruct (sign) ->
let resolve_out,sign_out =
strengthen_sig env mtb.typ_mp sign mp mtb.typ_delta in
{mtb with
typ_expr = SEBstruct(sign_out);
typ_delta = resolve_out(*add_delta_resolver mtb.typ_delta
(add_mp_delta_resolver mtb.typ_mp mp resolve_out)*)}
| SEBfunctor _ -> mtb
| _ -> anomaly "Modops:the evaluation of the structure failed "
let subst_and_strengthen mb mp env =
strengthen_mod env mb.mod_mp mp
(subst_module (map_mp mb.mod_mp mp) mb)
let module_type_of_module env mp mb =
match mp with
Some mp ->
strengthen env {
typ_mp = mp;
typ_expr = mb.mod_type;
typ_expr_alg = None;
typ_constraints = mb.mod_constraints;
typ_delta = mb.mod_delta} mp
| None ->
{typ_mp = mb.mod_mp;
typ_expr = mb.mod_type;
typ_expr_alg = None;
typ_constraints = mb.mod_constraints;
typ_delta = mb.mod_delta}
|
