haftmann@38533: (*  Title:      Pure/Isar/theory_target.ML
haftmann@38533:     Author:     Makarius
haftmann@38533:     Author:     Florian Haftmann, TU Muenchen
haftmann@38533: 
haftmann@38533: Common target infrastructure.
haftmann@38533: *)
haftmann@38533: 
haftmann@38533: signature GENERIC_TARGET =
haftmann@38533: sig
haftmann@38537:   val define: (((binding * typ) * mixfix) * (binding * term)
haftmann@38537:     -> term list * term list -> local_theory -> (term * thm) * local_theory)
haftmann@38533:     -> (binding * mixfix) * (Attrib.binding * term) -> local_theory
haftmann@38533:     -> (term * (string * thm)) * local_theory
haftmann@38533:   val notes: (string
haftmann@38533:     -> (Attrib.binding * (thm list * Args.src list) list) list
haftmann@38533:     -> (Attrib.binding * (thm list * Args.src list) list) list
haftmann@38533:     -> local_theory -> local_theory)
haftmann@38533:     -> string -> (Attrib.binding * (thm list * Args.src list) list) list
haftmann@38533:     -> local_theory -> (string * thm list) list * local_theory
haftmann@38534:   val abbrev: (string * bool -> binding * mixfix -> term * term
haftmann@38536:     -> term list -> local_theory -> local_theory)
haftmann@38534:     -> string * bool -> (binding * mixfix) * term -> local_theory
haftmann@38534:     -> (term * term) * local_theory
haftmann@38577: 
haftmann@38577:   val theory_declaration: declaration -> local_theory -> local_theory
haftmann@38577:   val theory_foundation: ((binding * typ) * mixfix) * (binding * term)
haftmann@38577:     -> term list * term list -> local_theory -> (term * thm) * local_theory
haftmann@38577:   val theory_notes: string -> (Attrib.binding * (thm list * Args.src list) list) list
haftmann@38577:     -> local_theory -> local_theory
haftmann@38577:   val theory_abbrev: Syntax.mode -> (binding * mixfix) * term
haftmann@38577:     -> local_theory -> local_theory
haftmann@38533: end;
haftmann@38533: 
haftmann@38533: structure Generic_Target: GENERIC_TARGET =
haftmann@38533: struct
haftmann@38533: 
haftmann@38577: (** lifting primitive to target operations **)
haftmann@38577: 
haftmann@38536: (* mixfix syntax *)
haftmann@38536: 
haftmann@38536: fun check_mixfix ctxt (b, extra_tfrees) mx =
haftmann@38536:   if null extra_tfrees then mx
haftmann@38536:   else
haftmann@38536:     (warning
haftmann@38536:       ("Additional type variable(s) in specification of " ^ Binding.str_of b ^ ": " ^
haftmann@38536:         commas (map (Syntax.string_of_typ ctxt o TFree) (sort_wrt #1 extra_tfrees)) ^
haftmann@38536:         (if mx = NoSyn then ""
haftmann@38536:          else "\nDropping mixfix syntax " ^ Pretty.string_of (Syntax.pretty_mixfix mx)));
haftmann@38536:       NoSyn);
haftmann@38536: 
haftmann@38536: 
haftmann@38533: (* define *)
haftmann@38533: 
haftmann@38535: fun define foundation ((b, mx), ((proto_b_def, atts), rhs)) lthy =
haftmann@38533:   let
haftmann@38533:     val thy = ProofContext.theory_of lthy;
haftmann@38533:     val thy_ctxt = ProofContext.init_global thy;
haftmann@38533: 
haftmann@38535:     val b_def = Thm.def_binding_optional b proto_b_def;
haftmann@38533: 
haftmann@38533:     (*term and type parameters*)
haftmann@38533:     val crhs = Thm.cterm_of thy rhs;
haftmann@38533:     val (defs, rhs') = Local_Defs.export_cterm lthy thy_ctxt crhs ||> Thm.term_of;
haftmann@38533:     val rhs_conv = MetaSimplifier.rewrite true defs crhs;
haftmann@38533: 
haftmann@38533:     val xs = Variable.add_fixed (Local_Theory.target_of lthy) rhs' [];
haftmann@38533:     val T = Term.fastype_of rhs;
haftmann@38533:     val tfreesT = Term.add_tfreesT T (fold (Term.add_tfreesT o #2) xs []);
haftmann@38533:     val extra_tfrees = rev (subtract (op =) tfreesT (Term.add_tfrees rhs []));
haftmann@38536:     val mx' = check_mixfix lthy (b, extra_tfrees) mx;
haftmann@38533: 
haftmann@38533:     val type_params = map (Logic.mk_type o TFree) extra_tfrees;
haftmann@38533:     val term_params =
haftmann@38533:       rev (Variable.fixes_of (Local_Theory.target_of lthy))
haftmann@38533:       |> map_filter (fn (_, x) =>
haftmann@38533:         (case AList.lookup (op =) xs x of
haftmann@38533:           SOME T => SOME (Free (x, T))
haftmann@38533:         | NONE => NONE));
haftmann@38533:     val params = type_params @ term_params;
haftmann@38533: 
haftmann@38533:     val U = map Term.fastype_of params ---> T;
haftmann@38533: 
haftmann@38533:     (*foundation*)
haftmann@38539:     val ((lhs', global_def), lthy2) = foundation
haftmann@38537:       (((b, U), mx'), (b_def, rhs')) (type_params, term_params) lthy;
haftmann@38533: 
haftmann@38533:     (*local definition*)
haftmann@38539:     val ((lhs, local_def), lthy3) = lthy2
haftmann@38533:       |> Local_Defs.add_def ((b, NoSyn), lhs');
haftmann@38539:     val def = Local_Defs.trans_terms lthy3
haftmann@38533:       [(*c == global.c xs*)     local_def,
haftmann@38533:        (*global.c xs == rhs'*)  global_def,
haftmann@38533:        (*rhs' == rhs*)          Thm.symmetric rhs_conv];
haftmann@38533: 
haftmann@38533:     (*note*)
haftmann@38539:     val ([(res_name, [res])], lthy4) = lthy3
haftmann@38535:       |> Local_Theory.notes_kind "" [((b_def, atts), [([def], [])])];
haftmann@38539:   in ((lhs, (res_name, res)), lthy4) end;
haftmann@38533: 
haftmann@38533: 
haftmann@38533: (* notes *)
haftmann@38533: 
haftmann@38533: fun import_export_proof ctxt (name, raw_th) =
haftmann@38533:   let
haftmann@38533:     val thy = ProofContext.theory_of ctxt;
haftmann@38533:     val thy_ctxt = ProofContext.init_global thy;
haftmann@38533:     val certT = Thm.ctyp_of thy;
haftmann@38533:     val cert = Thm.cterm_of thy;
haftmann@38533: 
haftmann@38533:     (*export assumes/defines*)
haftmann@38533:     val th = Goal.norm_result raw_th;
haftmann@38533:     val (defs, th') = Local_Defs.export ctxt thy_ctxt th;
haftmann@38534:     val assms = map (MetaSimplifier.rewrite_rule defs o Thm.assume)
haftmann@38534:       (Assumption.all_assms_of ctxt);
haftmann@38533:     val nprems = Thm.nprems_of th' - Thm.nprems_of th;
haftmann@38533: 
haftmann@38533:     (*export fixes*)
haftmann@38533:     val tfrees = map TFree (Thm.fold_terms Term.add_tfrees th' []);
haftmann@38533:     val frees = map Free (Thm.fold_terms Term.add_frees th' []);
haftmann@38533:     val (th'' :: vs) = (th' :: map (Drule.mk_term o cert) (map Logic.mk_type tfrees @ frees))
haftmann@38533:       |> Variable.export ctxt thy_ctxt
haftmann@38533:       |> Drule.zero_var_indexes_list;
haftmann@38533: 
haftmann@38533:     (*thm definition*)
haftmann@38533:     val result = PureThy.name_thm true true name th'';
haftmann@38533: 
haftmann@38533:     (*import fixes*)
haftmann@38533:     val (tvars, vars) =
haftmann@38533:       chop (length tfrees) (map (Thm.term_of o Drule.dest_term) vs)
haftmann@38533:       |>> map Logic.dest_type;
haftmann@38533: 
haftmann@38533:     val instT = map_filter (fn (TVar v, T) => SOME (v, T) | _ => NONE) (tvars ~~ tfrees);
haftmann@38533:     val inst = filter (is_Var o fst) (vars ~~ frees);
haftmann@38533:     val cinstT = map (pairself certT o apfst TVar) instT;
haftmann@38533:     val cinst = map (pairself (cert o Term.map_types (Term_Subst.instantiateT instT))) inst;
haftmann@38533:     val result' = Thm.instantiate (cinstT, cinst) result;
haftmann@38533: 
haftmann@38533:     (*import assumes/defines*)
haftmann@38533:     val assm_tac = FIRST' (map (fn assm => Tactic.compose_tac (false, assm, 0)) assms);
haftmann@38533:     val result'' =
haftmann@38533:       (case SINGLE (Seq.INTERVAL assm_tac 1 nprems) result' of
haftmann@38533:         NONE => raise THM ("Failed to re-import result", 0, [result'])
haftmann@38533:       | SOME res => Local_Defs.contract ctxt defs (Thm.cprop_of th) res)
haftmann@38533:       |> Goal.norm_result
haftmann@38533:       |> PureThy.name_thm false false name;
haftmann@38533: 
haftmann@38533:   in (result'', result) end;
haftmann@38533: 
haftmann@38533: fun notes target_notes kind facts lthy =
haftmann@38533:   let
haftmann@38533:     val thy = ProofContext.theory_of lthy;
haftmann@38533:     val facts' = facts
haftmann@38533:       |> map (fn (a, bs) => (a, PureThy.burrow_fact (PureThy.name_multi
haftmann@38533:           (Local_Theory.full_name lthy (fst a))) bs))
haftmann@38533:       |> PureThy.map_facts (import_export_proof lthy);
haftmann@38533:     val local_facts = PureThy.map_facts #1 facts';
haftmann@38533:     val global_facts = PureThy.map_facts #2 facts';
haftmann@38533:   in
haftmann@38533:     lthy
haftmann@38533:     |> target_notes kind global_facts local_facts
haftmann@38533:     |> ProofContext.note_thmss kind (Attrib.map_facts (Attrib.attribute_i thy) local_facts)
haftmann@38533:   end;
haftmann@38533: 
haftmann@38533: 
haftmann@38533: (* abbrev *)
haftmann@38533: 
haftmann@38533: fun abbrev target_abbrev prmode ((b, mx), t) lthy =
haftmann@38533:   let
haftmann@38533:     val thy_ctxt = ProofContext.init_global (ProofContext.theory_of lthy);
haftmann@38533:     val target_ctxt = Local_Theory.target_of lthy;
haftmann@38533: 
haftmann@38533:     val t' = Assumption.export_term lthy target_ctxt t;
haftmann@38533:     val xs = map Free (rev (Variable.add_fixed target_ctxt t' []));
haftmann@38533:     val u = fold_rev lambda xs t';
haftmann@38533: 
haftmann@38533:     val extra_tfrees =
haftmann@38533:       subtract (op =) (Term.add_tfreesT (Term.fastype_of u) []) (Term.add_tfrees u []);
haftmann@38536:     val mx' = check_mixfix lthy (b, extra_tfrees) mx;
haftmann@38533: 
haftmann@38533:     val global_rhs =
haftmann@38533:       singleton (Variable.export_terms (Variable.declare_term u target_ctxt) thy_ctxt) u;
haftmann@38533:   in
haftmann@38533:     lthy
haftmann@38536:     |> target_abbrev prmode (b, mx') (global_rhs, t') xs
haftmann@38533:     |> ProofContext.add_abbrev Print_Mode.internal (b, t) |> snd
haftmann@38533:     |> Local_Defs.fixed_abbrev ((b, NoSyn), t)
haftmann@38533:   end;
haftmann@38533: 
haftmann@38577: 
haftmann@38577: (** primitive theory operations **)
haftmann@38577: 
haftmann@38577: fun theory_declaration decl lthy =
haftmann@38577:   let
haftmann@38577:     val global_decl = Morphism.form
haftmann@38577:       (Morphism.transform (Local_Theory.global_morphism lthy) decl);
haftmann@38577:   in
haftmann@38577:     lthy
wenzelm@39032:     |> Local_Theory.background_theory (Context.theory_map global_decl)
haftmann@38577:     |> Local_Theory.target (Context.proof_map global_decl)
haftmann@38577:   end;
haftmann@38577: 
haftmann@38577: fun theory_foundation (((b, U), mx), (b_def, rhs)) (type_params, term_params) lthy =
haftmann@38577:   let
wenzelm@39032:     val (const, lthy2) = lthy |> Local_Theory.background_theory_result
haftmann@38577:       (Sign.declare_const ((b, U), mx));
haftmann@38577:     val lhs = list_comb (const, type_params @ term_params);
wenzelm@39032:     val ((_, def), lthy3) = lthy2 |> Local_Theory.background_theory_result
haftmann@38577:       (Thm.add_def false false (b_def, Logic.mk_equals (lhs, rhs)));
haftmann@38577:   in ((lhs, def), lthy3) end;
haftmann@38577: 
haftmann@38577: fun theory_notes kind global_facts lthy =
haftmann@38577:   let
haftmann@38577:     val thy = ProofContext.theory_of lthy;
haftmann@38577:     val global_facts' = Attrib.map_facts (Attrib.attribute_i thy) global_facts;
haftmann@38577:   in
haftmann@38577:     lthy
wenzelm@39032:     |> Local_Theory.background_theory (PureThy.note_thmss kind global_facts' #> snd)
haftmann@38577:     |> Local_Theory.target (ProofContext.note_thmss kind global_facts' #> snd)
haftmann@38577:   end;
haftmann@38577: 
wenzelm@39032: fun theory_abbrev prmode ((b, mx), t) =
wenzelm@39032:   Local_Theory.background_theory
wenzelm@39032:     (Sign.add_abbrev (#1 prmode) (b, t) #->
wenzelm@39032:       (fn (lhs, _) => Sign.notation true prmode [(lhs, mx)]));
haftmann@38577: 
haftmann@38533: end;