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-(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2017 *)
-(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
-(************************************************************************)
-
-open Names
-open CErrors
-open Util
-open Term
-open Vars
-open Declarations
-open Cooking
-open Entries
-open Context.Rel.Declaration
-
-(********************************)
-(* Discharging mutual inductive *)
-
-let detype_param =
- function
- | LocalAssum (Name id, p) -> id, LocalAssumEntry p
- | LocalDef (Name id, p,_) -> id, LocalDefEntry p
- | _ -> anomaly (Pp.str "Unnamed inductive local variable.")
-
-(* Replace
-
- Var(y1)..Var(yq):C1..Cq |- Ij:Bj
- Var(y1)..Var(yq):C1..Cq; I1..Ip:B1..Bp |- ci : Ti
-
- by
-
- |- Ij: (y1..yq:C1..Cq)Bj
- I1..Ip:(B1 y1..yq)..(Bp y1..yq) |- ci : (y1..yq:C1..Cq)Ti[Ij:=(Ij y1..yq)]
-*)
-
-let abstract_inductive decls nparamdecls inds =
- let ntyp = List.length inds in
- let ndecls = Context.Named.length decls in
- let args = Context.Named.to_instance mkVar (List.rev decls) in
- let args = Array.of_list args in
- let subs = List.init ntyp (fun k -> lift ndecls (mkApp(mkRel (k+1),args))) in
- let inds' =
- List.map
- (function (tname,arity,template,cnames,lc) ->
- let lc' = List.map (substl subs) lc in
- let lc'' = List.map (fun b -> Termops.it_mkNamedProd_wo_LetIn b decls) lc' in
- let arity' = Termops.it_mkNamedProd_wo_LetIn arity decls in
- (tname,arity',template,cnames,lc''))
- inds in
- let nparamdecls' = nparamdecls + Array.length args in
-(* To be sure to be the same as before, should probably be moved to process_inductive *)
- let params' = let (_,arity,_,_,_) = List.hd inds' in
- let (params,_) = decompose_prod_n_assum nparamdecls' arity in
- List.map detype_param params
- in
- let ind'' =
- List.map
- (fun (a,arity,template,c,lc) ->
- let _, short_arity = decompose_prod_n_assum nparamdecls' arity in
- let shortlc =
- List.map (fun c -> snd (decompose_prod_n_assum nparamdecls' c)) lc in
- { mind_entry_typename = a;
- mind_entry_arity = short_arity;
- mind_entry_template = template;
- mind_entry_consnames = c;
- mind_entry_lc = shortlc })
- inds'
- in (params',ind'')
-
-let refresh_polymorphic_type_of_inductive (_,mip) =
- match mip.mind_arity with
- | RegularArity s -> s.mind_user_arity, false
- | TemplateArity ar ->
- let ctx = List.rev mip.mind_arity_ctxt in
- mkArity (List.rev ctx, Type ar.template_level), true
-
-let process_inductive (section_decls,_,_ as info) modlist mib =
- let section_decls = Lib.named_of_variable_context section_decls in
- let nparamdecls = Context.Rel.length mib.mind_params_ctxt in
- let subst, ind_univs =
- match mib.mind_universes with
- | Monomorphic_ind ctx -> Univ.empty_level_subst, Monomorphic_ind_entry ctx
- | Polymorphic_ind auctx ->
- let subst, auctx = Lib.discharge_abstract_universe_context info auctx in
- let auctx = Univ.AUContext.repr auctx in
- subst, Polymorphic_ind_entry auctx
- | Cumulative_ind cumi ->
- let auctx = Univ.ACumulativityInfo.univ_context cumi in
- let subst, auctx = Lib.discharge_abstract_universe_context info auctx in
- let auctx = Univ.AUContext.repr auctx in
- subst, Cumulative_ind_entry (Universes.univ_inf_ind_from_universe_context auctx)
- in
- let discharge c = Vars.subst_univs_level_constr subst (expmod_constr modlist c) in
- let inds =
- Array.map_to_list
- (fun mip ->
- let ty, template = refresh_polymorphic_type_of_inductive (mib,mip) in
- let arity = discharge ty in
- let lc = Array.map discharge mip.mind_user_lc in
- (mip.mind_typename,
- arity, template,
- Array.to_list mip.mind_consnames,
- Array.to_list lc))
- mib.mind_packets in
- let section_decls' = Context.Named.map discharge section_decls in
- let (params',inds') = abstract_inductive section_decls' nparamdecls inds in
- let record = match mib.mind_record with
- | Some (Some (id, _, _)) -> Some (Some id)
- | Some None -> Some None
- | None -> None
- in
- { mind_entry_record = record;
- mind_entry_finite = mib.mind_finite;
- mind_entry_params = params';
- mind_entry_inds = inds';
- mind_entry_private = mib.mind_private;
- mind_entry_universes = ind_univs
- }
-