+++ /dev/null
-(* Copyright (C) 2004-2005, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-let rec_ty uri leftno =
- let rec_ty = Cic.MutInd (uri,0,[]) in
- if leftno = 0 then rec_ty else
- Cic.Appl (rec_ty :: (CicUtil.mk_rels leftno 0))
-
-let generate_one_proj uri params paramsno fields t i =
- let mk_lambdas l start =
- List.fold_right (fun (name,ty) acc ->
- Cic.Lambda (Cic.Name name,ty,acc)) l start in
- let recty = rec_ty uri paramsno in
- let outtype = Cic.Lambda (Cic.Name "w'", CicSubstitution.lift 1 recty, t) in
- Some
- (mk_lambdas params
- (Cic.Lambda (Cic.Name "w", recty,
- Cic.MutCase (uri,0,outtype, Cic.Rel 1,
- [mk_lambdas fields (Cic.Rel i)]))))
-
-let projections_of uri field_names =
- let buri = UriManager.buri_of_uri uri in
- let obj,ugraph = CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri in
- match obj with
- Cic.InductiveDefinition ([_,_,sort,[_,ty]],params,paramsno,_) ->
- assert (params = []); (* general case not implemented *)
- let leftparams,ty =
- let rec aux =
- function
- 0,ty -> [],ty
- | n,Cic.Prod (Cic.Name name,s,t) ->
- let leftparams,ty = aux (n - 1,t) in
- (name,s)::leftparams,ty
- | _,_ -> assert false
- in
- aux (paramsno,ty)
- in
- let fields =
- let rec aux =
- function
- Cic.MutInd _, []
- | Cic.Appl _, [] -> []
- | Cic.Prod (_,s,t), name::tl -> (name,s)::aux (t,tl)
- | _,_ -> assert false
- in
- aux ((CicSubstitution.lift 1 ty),field_names)
- in
- let rec aux i =
- function
- Cic.MutInd _, []
- | Cic.Appl _, [] -> []
- | Cic.Prod (_,s,t), name::tl ->
- (match generate_one_proj uri leftparams paramsno fields s i with
- Some p ->
- let puri =
- UriManager.uri_of_string (buri ^ "/" ^ name ^ ".con")
- in
- (puri,name,p) ::
- aux (i - 1)
- (CicSubstitution.subst
- (Cic.Appl
- (Cic.Const (puri,[]) ::
- CicUtil.mk_rels paramsno 2 @ [Cic.Rel 1])
- ) t, tl)
- | None -> assert false)
- | _,_ -> assert false
- in
- aux (List.length fields) (CicSubstitution.lift 2 ty,field_names)
- | _ -> assert false