--- /dev/null
+(* Copyright (C) 2000, 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://cs.unibo.it/helm/.
+ *)
+
+type anntypes =
+ {annsynthesized : Cic.annterm ; annexpected : Cic.annterm option}
+;;
+
+let gen_id seed =
+ let res = "i" ^ string_of_int !seed in
+ incr seed ;
+ res
+;;
+
+let fresh_id seed ids_to_terms ids_to_father_ids =
+ fun father t ->
+ let res = gen_id seed in
+ Hashtbl.add ids_to_father_ids res father ;
+ Hashtbl.add ids_to_terms res t ;
+ res
+;;
+
+let source_id_of_id id = "#source#" ^ id;;
+
+exception NotEnoughElements;;
+exception NameExpected;;
+
+(*CSC: cut&paste da cicPp.ml *)
+(* get_nth l n returns the nth element of the list l if it exists or *)
+(* raises NotEnoughElements if l has less than n elements *)
+let rec get_nth l n =
+ match (n,l) with
+ (1, he::_) -> he
+ | (n, he::tail) when n > 1 -> get_nth tail (n-1)
+ | (_,_) -> raise NotEnoughElements
+;;
+
+let acic_of_cic_context' seed ids_to_terms ids_to_father_ids ids_to_inner_sorts
+ ids_to_inner_types metasenv context idrefs t expectedty
+=
+ let module D = DoubleTypeInference in
+ let module T = CicTypeChecker in
+ let module C = Cic in
+ let fresh_id' = fresh_id seed ids_to_terms ids_to_father_ids in
+ let terms_to_types =
+ D.double_type_of metasenv context t expectedty
+ in
+ let rec aux computeinnertypes father context idrefs tt =
+ let fresh_id'' = fresh_id' father tt in
+ (*CSC: computeinnertypes era true, il che e' proprio sbagliato, no? *)
+ let aux' = aux computeinnertypes (Some fresh_id'') in
+ (* First of all we compute the inner type and the inner sort *)
+ (* of the term. They may be useful in what follows. *)
+ (*CSC: This is a very inefficient way of computing inner types *)
+ (*CSC: and inner sorts: very deep terms have their types/sorts *)
+ (*CSC: computed again and again. *)
+ let string_of_sort t =
+ match CicReduction.whd context t with
+ C.Sort C.Prop -> "Prop"
+ | C.Sort C.Set -> "Set"
+ | C.Sort C.Type -> "Type"
+ | _ -> assert false
+ in
+ let ainnertypes,innertype,innersort,expected_available =
+(*CSC: Here we need the algorithm for Coscoy's double type-inference *)
+(*CSC: (expected type + inferred type). Just for now we use the usual *)
+(*CSC: type-inference, but the result is very poor. As a very weak *)
+(*CSC: patch, I apply whd to the computed type. Full beta *)
+(*CSC: reduction would be a much better option. *)
+ let {D.synthesized = synthesized; D.expected = expected} =
+ if computeinnertypes then
+ D.CicHash.find terms_to_types tt
+ else
+ (* We are already in an inner-type and Coscoy's double *)
+ (* type inference algorithm has not been applied. *)
+ {D.synthesized =
+ CicReduction.whd context (T.type_of_aux' metasenv context tt) ;
+ D.expected = None}
+ in
+ let innersort = T.type_of_aux' metasenv context synthesized in
+ let ainnertypes,expected_available =
+ if computeinnertypes then
+ let annexpected,expected_available =
+ match expected with
+ None -> None,false
+ | Some expectedty' ->
+ Some
+ (aux false (Some fresh_id'') context idrefs expectedty'),
+ true
+ in
+ Some
+ {annsynthesized =
+ aux false (Some fresh_id'') context idrefs synthesized ;
+ annexpected = annexpected
+ }, expected_available
+ else
+ None,false
+ in
+ ainnertypes,synthesized, string_of_sort innersort, expected_available
+ in
+ let add_inner_type id =
+ match ainnertypes with
+ None -> ()
+ | Some ainnertypes -> Hashtbl.add ids_to_inner_types id ainnertypes
+ in
+ match tt with
+ C.Rel n ->
+ let id =
+ match get_nth context n with
+ (Some (C.Name s,_)) -> s
+ | _ -> raise NameExpected
+ in
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" && expected_available then
+ add_inner_type fresh_id'' ;
+ C.ARel (fresh_id'', List.nth idrefs (n-1), n, id)
+ | C.Var (uri,exp_named_subst) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" && expected_available then
+ add_inner_type fresh_id'' ;
+ let exp_named_subst' =
+ List.map
+ (function i,t -> i, (aux' context idrefs t)) exp_named_subst
+ in
+ C.AVar (fresh_id'', uri,exp_named_subst')
+ | C.Meta (n,l) ->
+ let (_,canonical_context,_) =
+ List.find (function (m,_,_) -> n = m) metasenv
+ in
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" && expected_available then
+ add_inner_type fresh_id'' ;
+ C.AMeta (fresh_id'', n,
+ (List.map2
+ (fun ct t ->
+ match (ct, t) with
+ | None, _ -> None
+ | _, Some t -> Some (aux' context idrefs t)
+ | Some _, None -> assert false (* due to typing rules *))
+ canonical_context l))
+ | C.Sort s -> C.ASort (fresh_id'', s)
+ | C.Implicit -> C.AImplicit (fresh_id'')
+ | C.Cast (v,t) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.ACast (fresh_id'', aux' context idrefs v, aux' context idrefs t)
+ | C.Prod (n,s,t) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id''
+ (string_of_sort innertype) ;
+ let sourcetype = T.type_of_aux' metasenv context s in
+ Hashtbl.add ids_to_inner_sorts (source_id_of_id fresh_id'')
+ (string_of_sort sourcetype) ;
+ let n' =
+ match n with
+ C.Anonymous -> n
+ | C.Name n' ->
+ if D.does_not_occur 1 t then
+ C.Anonymous
+ else
+ C.Name n'
+ in
+ C.AProd
+ (fresh_id'', n', aux' context idrefs s,
+ aux' ((Some (n, C.Decl s))::context) (fresh_id''::idrefs) t)
+ | C.Lambda (n,s,t) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ let sourcetype = T.type_of_aux' metasenv context s in
+ Hashtbl.add ids_to_inner_sorts (source_id_of_id fresh_id'')
+ (string_of_sort sourcetype) ;
+ if innersort = "Prop" then
+ begin
+ let father_is_lambda =
+ match father with
+ None -> false
+ | Some father' ->
+ match Hashtbl.find ids_to_terms father' with
+ C.Lambda _ -> true
+ | _ -> false
+ in
+ if (not father_is_lambda) || expected_available then
+ add_inner_type fresh_id''
+ end ;
+ C.ALambda
+ (fresh_id'',n, aux' context idrefs s,
+ aux' ((Some (n, C.Decl s)::context)) (fresh_id''::idrefs) t)
+ | C.LetIn (n,s,t) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.ALetIn
+ (fresh_id'', n, aux' context idrefs s,
+ aux' ((Some (n, C.Def s))::context) (fresh_id''::idrefs) t)
+ | C.Appl l ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.AAppl (fresh_id'', List.map (aux' context idrefs) l)
+ | C.Const (uri,exp_named_subst) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" && expected_available then
+ add_inner_type fresh_id'' ;
+ let exp_named_subst' =
+ List.map
+ (function i,t -> i, (aux' context idrefs t)) exp_named_subst
+ in
+ C.AConst (fresh_id'', uri, exp_named_subst')
+ | C.MutInd (uri,tyno,exp_named_subst) ->
+ let exp_named_subst' =
+ List.map
+ (function i,t -> i, (aux' context idrefs t)) exp_named_subst
+ in
+ C.AMutInd (fresh_id'', uri, tyno, exp_named_subst')
+ | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" && expected_available then
+ add_inner_type fresh_id'' ;
+ let exp_named_subst' =
+ List.map
+ (function i,t -> i, (aux' context idrefs t)) exp_named_subst
+ in
+ C.AMutConstruct (fresh_id'', uri, tyno, consno, exp_named_subst')
+ | C.MutCase (uri, tyno, outty, term, patterns) ->
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.AMutCase (fresh_id'', uri, tyno, aux' context idrefs outty,
+ aux' context idrefs term, List.map (aux' context idrefs) patterns)
+ | C.Fix (funno, funs) ->
+ let fresh_idrefs =
+ List.map (function _ -> gen_id seed) funs in
+ let new_idrefs = List.rev fresh_idrefs @ idrefs in
+ let tys =
+ List.map (fun (name,_,ty,_) -> Some (C.Name name, C.Decl ty)) funs
+ in
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.AFix (fresh_id'', funno,
+ List.map2
+ (fun id (name, indidx, ty, bo) ->
+ (id, name, indidx, aux' context idrefs ty,
+ aux' (tys@context) new_idrefs bo)
+ ) fresh_idrefs funs
+ )
+ | C.CoFix (funno, funs) ->
+ let fresh_idrefs =
+ List.map (function _ -> gen_id seed) funs in
+ let new_idrefs = List.rev fresh_idrefs @ idrefs in
+ let tys =
+ List.map (fun (name,ty,_) -> Some (C.Name name, C.Decl ty)) funs
+ in
+ Hashtbl.add ids_to_inner_sorts fresh_id'' innersort ;
+ if innersort = "Prop" then
+ add_inner_type fresh_id'' ;
+ C.ACoFix (fresh_id'', funno,
+ List.map2
+ (fun id (name, ty, bo) ->
+ (id, name, aux' context idrefs ty,
+ aux' (tys@context) new_idrefs bo)
+ ) fresh_idrefs funs
+ )
+ in
+ aux true None context idrefs t
+;;
+
+let acic_of_cic_context metasenv context idrefs t =
+ let ids_to_terms = Hashtbl.create 503 in
+ let ids_to_father_ids = Hashtbl.create 503 in
+ let ids_to_inner_sorts = Hashtbl.create 503 in
+ let ids_to_inner_types = Hashtbl.create 503 in
+ let seed = ref 0 in
+ acic_of_cic_context' seed ids_to_terms ids_to_father_ids ids_to_inner_sorts
+ ids_to_inner_types metasenv context idrefs t,
+ ids_to_terms, ids_to_father_ids, ids_to_inner_sorts, ids_to_inner_types
+;;
+
+let acic_object_of_cic_object obj =
+ let module C = Cic in
+ let ids_to_terms = Hashtbl.create 503 in
+ let ids_to_father_ids = Hashtbl.create 503 in
+ let ids_to_inner_sorts = Hashtbl.create 503 in
+ let ids_to_inner_types = Hashtbl.create 503 in
+ let ids_to_conjectures = Hashtbl.create 11 in
+ let ids_to_hypotheses = Hashtbl.create 127 in
+ let hypotheses_seed = ref 0 in
+ let conjectures_seed = ref 0 in
+ let seed = ref 0 in
+ let acic_term_of_cic_term_context' =
+ acic_of_cic_context' seed ids_to_terms ids_to_father_ids ids_to_inner_sorts
+ ids_to_inner_types in
+ let acic_term_of_cic_term' = acic_term_of_cic_term_context' [] [] [] in
+ let aobj =
+ match obj with
+ C.Constant (id,Some bo,ty,params) ->
+ let abo = acic_term_of_cic_term' bo (Some ty) in
+ let aty = acic_term_of_cic_term' ty None in
+ C.AConstant
+ ("mettereaposto",Some "mettereaposto2",id,Some abo,aty, params)
+ | C.Constant (id,None,ty,params) ->
+ let aty = acic_term_of_cic_term' ty None in
+ C.AConstant
+ ("mettereaposto",None,id,None,aty, params)
+ | C.Variable (id,bo,ty,params) ->
+ let abo =
+ match bo with
+ None -> None
+ | Some bo -> Some (acic_term_of_cic_term' bo (Some ty))
+ in
+ let aty = acic_term_of_cic_term' ty None in
+ C.AVariable
+ ("mettereaposto",id,abo,aty, params)
+ | C.CurrentProof (id,conjectures,bo,ty,params) ->
+ let aconjectures =
+ List.map
+ (function (i,canonical_context,term) as conjecture ->
+ let cid = "c" ^ string_of_int !conjectures_seed in
+ Hashtbl.add ids_to_conjectures cid conjecture ;
+ incr conjectures_seed ;
+ let idrefs',revacanonical_context =
+ let rec aux context idrefs =
+ function
+ [] -> idrefs,[]
+ | hyp::tl ->
+ let hid = "h" ^ string_of_int !hypotheses_seed in
+ let new_idrefs = hid::idrefs in
+ Hashtbl.add ids_to_hypotheses hid hyp ;
+ incr hypotheses_seed ;
+ match hyp with
+ (Some (n,C.Decl t)) ->
+ let final_idrefs,atl =
+ aux (hyp::context) new_idrefs tl in
+ let at =
+ acic_term_of_cic_term_context'
+ conjectures context idrefs t None
+ in
+ final_idrefs,(hid,Some (n,C.ADecl at))::atl
+ | (Some (n,C.Def t)) ->
+ let final_idrefs,atl =
+ aux (hyp::context) new_idrefs tl in
+ let at =
+ acic_term_of_cic_term_context'
+ conjectures context idrefs t None
+ in
+ final_idrefs,(hid,Some (n,C.ADef at))::atl
+ | None ->
+ let final_idrefs,atl =
+ aux (hyp::context) new_idrefs tl
+ in
+ final_idrefs,(hid,None)::atl
+ in
+ aux [] [] (List.rev canonical_context)
+ in
+ let aterm =
+ acic_term_of_cic_term_context' conjectures
+ canonical_context idrefs' term None
+ in
+ (cid,i,(List.rev revacanonical_context),aterm)
+ ) conjectures in
+ let abo =
+ acic_term_of_cic_term_context' conjectures [] [] bo (Some ty) in
+ let aty = acic_term_of_cic_term_context' conjectures [] [] ty None in
+ C.ACurrentProof
+ ("mettereaposto","mettereaposto2",id,aconjectures,abo,aty,params)
+ | C.InductiveDefinition (tys,params,paramsno) ->
+ let context =
+ List.map
+ (fun (name,_,arity,_) -> Some (C.Name name, C.Decl arity)) tys in
+ let idrefs = List.map (function _ -> gen_id seed) tys in
+ let atys =
+ List.map2
+ (fun id (name,inductive,ty,cons) ->
+ let acons =
+ List.map
+ (function (name,ty) ->
+ (name,
+ acic_term_of_cic_term_context' [] context idrefs ty None)
+ ) cons
+ in
+ (id,name,inductive,acic_term_of_cic_term' ty None,acons)
+ ) (List.rev idrefs) tys
+ in
+ C.AInductiveDefinition ("mettereaposto",atys,params,paramsno)
+ in
+ aobj,ids_to_terms,ids_to_father_ids,ids_to_inner_sorts,ids_to_inner_types,
+ ids_to_conjectures,ids_to_hypotheses
+;;
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