src/Pure/axclass.ML
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(*  Title:      Pure/axclass.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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Type classes as parameter records and predicates, with explicit
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definitions and proofs.
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*)
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signature AX_CLASS =
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sig
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  val define_class: bstring * class list -> string list ->
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    ((bstring * attribute list) * term list) list -> theory -> class * theory
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  val define_class_params: bstring * class list -> ((bstring * typ) * mixfix) list ->
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    (theory -> (string * typ) list -> ((bstring * attribute list) * term list) list) ->
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    string list -> theory ->
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    (class * ((string * typ) list * thm list)) * theory
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  val add_classrel: thm -> theory -> theory
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  val add_arity: thm -> theory -> theory
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  val prove_classrel: class * class -> tactic -> theory -> theory
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  val prove_arity: string * sort list * sort -> tactic -> theory -> theory
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  val get_definition: theory -> class -> {def: thm, intro: thm, axioms: thm list,
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    params: (string * typ) list}
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  val class_intros: theory -> thm list
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  val class_of_param: theory -> string -> class option
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  val params_of_class: theory -> class -> string * (string * typ) list
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  val param_tyvarname: string
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  val print_axclasses: theory -> unit
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  val cert_classrel: theory -> class * class -> class * class
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  val read_classrel: theory -> xstring * xstring -> class * class
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  val axiomatize_class: bstring * xstring list -> theory -> theory
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  val axiomatize_class_i: bstring * class list -> theory -> theory
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  val axiomatize_classrel: (xstring * xstring) list -> theory -> theory
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  val axiomatize_classrel_i: (class * class) list -> theory -> theory
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  val axiomatize_arity: xstring * string list * string -> theory -> theory
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  val axiomatize_arity_i: arity -> theory -> theory
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  type cache
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  val cache: cache
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  val of_sort: theory -> typ * sort -> cache -> thm list * cache  (*exception Sorts.CLASS_ERROR*)
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end;
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structure AxClass: AX_CLASS =
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struct
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(** theory data **)
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(* class parameters (canonical order) *)
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type param = string * class;
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fun add_param pp ((x, c): param) params =
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  (case AList.lookup (op =) params x of
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    NONE => (x, c) :: params
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  | SOME c' => error ("Duplicate class parameter " ^ quote x ^
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      " for " ^ Pretty.string_of_sort pp [c] ^
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      (if c = c' then "" else " and " ^ Pretty.string_of_sort pp [c'])));
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fun merge_params _ ([], qs) = qs
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  | merge_params pp (ps, qs) =
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      fold_rev (fn q => if member (op =) ps q then I else add_param pp q) qs ps;
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(* axclasses *)
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val introN = "intro";
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val superN = "super";
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val axiomsN = "axioms";
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val param_tyvarname = "'a";
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datatype axclass = AxClass of
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 {def: thm,
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  intro: thm,
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  axioms: thm list,
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  params: (string * typ) list};
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type axclasses = axclass Symtab.table * param list;
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fun make_axclass ((def, intro, axioms), params) =
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  AxClass {def = def, intro = intro, axioms = axioms, params = params};
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fun merge_axclasses pp ((tab1, params1), (tab2, params2)) : axclasses =
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  (Symtab.merge (K true) (tab1, tab2), merge_params pp (params1, params2));
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(* instances *)
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val classrel_prefix = "classrel_";
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val arity_prefix = "arity_";
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type instances =
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  ((class * class) * thm) list *
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  ((class * sort list) * thm) list Symtab.table;
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fun merge_instances ((classrel1, arities1): instances, (classrel2, arities2)) =
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 (merge (eq_fst op =) (classrel1, classrel2),
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  Symtab.join (K (merge (eq_fst op =))) (arities1, arities2));
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(* setup data *)
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structure AxClassData = TheoryDataFun
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(
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  type T = axclasses * instances;
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  val empty = ((Symtab.empty, []), ([], Symtab.empty));
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  val copy = I;
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  val extend = I;
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  fun merge pp ((axclasses1, instances1), (axclasses2, instances2)) =
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    (merge_axclasses pp (axclasses1, axclasses2), (merge_instances (instances1, instances2)));
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);
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(* maintain axclasses *)
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val get_axclasses = #1 o AxClassData.get;
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fun map_axclasses f = AxClassData.map (apfst f);
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val lookup_def = Symtab.lookup o #1 o get_axclasses;
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fun get_definition thy c =
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  (case lookup_def thy c of
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    SOME (AxClass info) => info
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  | NONE => error ("No such axclass: " ^ quote c));
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fun class_intros thy =
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  let
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    fun add_intro c =
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      (case lookup_def thy c of SOME (AxClass {intro, ...}) => cons intro | _ => I);
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    val classes = Sign.all_classes thy;
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  in map (Thm.class_triv thy) classes @ fold add_intro classes [] end;
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fun get_params thy pred =
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  let val params = #2 (get_axclasses thy);
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  in fold (fn (x, c) => if pred c then cons x else I) params [] end;
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fun params_of thy c = get_params thy (fn c' => c' = c);
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fun all_params_of thy S = get_params thy (fn c => Sign.subsort thy (S, [c]));
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fun class_of_param thy =
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  AList.lookup (op =) (#2 (get_axclasses thy));
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fun params_of_class thy class =
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  (param_tyvarname, (#params o get_definition thy) class);
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(* maintain instances *)
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val get_instances = #2 o AxClassData.get;
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fun map_instances f = AxClassData.map (apsnd f);
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fun the_classrel thy (c1, c2) =
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  (case AList.lookup (op =) (#1 (get_instances thy)) (c1, c2) of
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    SOME th => Thm.transfer thy th
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  | NONE => error ("Unproven class relation " ^ Sign.string_of_classrel thy [c1, c2]));
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fun put_classrel arg = map_instances (fn (classrel, arities) =>
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  (insert (eq_fst op =) arg classrel, arities));
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fun the_arity thy a (c, Ss) =
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  (case AList.lookup (op =) (Symtab.lookup_list (#2 (get_instances thy)) a) (c, Ss)  of
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    SOME th => Thm.transfer thy th
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  | NONE => error ("Unproven type arity " ^ Sign.string_of_arity thy (a, Ss, [c])));
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fun put_arity ((t, Ss, c), th) = map_instances (fn (classrel, arities) =>
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  (classrel, arities |> Symtab.insert_list (eq_fst op =) (t, ((c, Ss), th))));
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(* print data *)
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fun print_axclasses thy =
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  let
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    val axclasses = #1 (get_axclasses thy);
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    val ctxt = ProofContext.init thy;
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    fun pretty_axclass (class, AxClass {def, intro, axioms, params}) =
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      Pretty.block (Pretty.fbreaks
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       [Pretty.block
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          [Pretty.str "class ", ProofContext.pretty_sort ctxt [class], Pretty.str ":"],
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        Pretty.strs ("parameters:" :: params_of thy class),
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        ProofContext.pretty_fact ctxt ("def", [def]),
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        ProofContext.pretty_fact ctxt (introN, [intro]),
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        ProofContext.pretty_fact ctxt (axiomsN, axioms)]);
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  in Pretty.writeln (Pretty.chunks (map pretty_axclass (Symtab.dest axclasses))) end;
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(** instances **)
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(* class relations *)
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fun cert_classrel thy raw_rel =
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  let
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    val (c1, c2) = pairself (Sign.certify_class thy) raw_rel;
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    val _ = Sign.primitive_classrel (c1, c2) (Theory.copy thy);
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    val _ =
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      (case subtract (op =) (all_params_of thy [c1]) (all_params_of thy [c2]) of
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        [] => ()
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      | xs => raise TYPE ("Class " ^ Sign.string_of_sort thy [c1] ^ " lacks parameter(s) " ^
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          commas_quote xs ^ " of " ^ Sign.string_of_sort thy [c2], [], []));
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  in (c1, c2) end;
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fun read_classrel thy raw_rel =
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  cert_classrel thy (pairself (Sign.read_class thy) raw_rel)
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    handle TYPE (msg, _, _) => error msg;
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(* primitive rules *)
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fun add_classrel th thy =
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  let
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    fun err () = raise THM ("add_classrel: malformed class relation", 0, [th]);
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    val prop = Thm.plain_prop_of (Thm.transfer thy th);
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    val rel = Logic.dest_classrel prop handle TERM _ => err ();
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    val (c1, c2) = cert_classrel thy rel handle TYPE _ => err ();
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  in
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    thy
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    |> Sign.primitive_classrel (c1, c2)
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    |> put_classrel ((c1, c2), Drule.unconstrainTs th)
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  end;
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fun add_arity th thy =
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  let
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    fun err () = raise THM ("add_arity: malformed type arity", 0, [th]);
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    val prop = Thm.plain_prop_of (Thm.transfer thy th);
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    val (t, Ss, c) = Logic.dest_arity prop handle TERM _ => err ();
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    val _ = map (Sign.certify_sort thy) Ss = Ss orelse err ();
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  in
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    thy
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    |> Sign.primitive_arity (t, Ss, [c])
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    |> put_arity ((t, Ss, c), Drule.unconstrainTs th)
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  end;
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(* tactical proofs *)
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fun prove_classrel raw_rel tac thy =
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  let
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    val (c1, c2) = cert_classrel thy raw_rel;
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    val th = Goal.prove (ProofContext.init thy) [] []
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        (Logic.mk_classrel (c1, c2)) (fn _ => tac) handle ERROR msg =>
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      cat_error msg ("The error(s) above occurred while trying to prove class relation " ^
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        quote (Sign.string_of_classrel thy [c1, c2]));
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  in
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    thy
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    |> PureThy.add_thms [((prefix classrel_prefix (Logic.name_classrel (c1, c2)), th), [])]
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    |-> (fn [th'] => add_classrel th')
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  end;
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fun prove_arity raw_arity tac thy =
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  let
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    val arity = Sign.cert_arity thy raw_arity;
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    val names = map (prefix arity_prefix) (Logic.name_arities arity);
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    val props = Logic.mk_arities arity;
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    val ths = Goal.prove_multi (ProofContext.init thy) [] [] props
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      (fn _ => Goal.precise_conjunction_tac (length props) 1 THEN tac) handle ERROR msg =>
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        cat_error msg ("The error(s) above occurred while trying to prove type arity " ^
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          quote (Sign.string_of_arity thy arity));
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  in
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    thy
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    |> PureThy.add_thms (map (rpair []) (names ~~ ths))
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    |-> fold add_arity
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  end;
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(** class definitions **)
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fun split_defined n eq =
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  let
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    val intro =
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      (eq RS Drule.equal_elim_rule2)
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      |> Conjunction.curry_balanced n
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      |> n = 0 ? Thm.eq_assumption 1;
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    val dests =
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      if n = 0 then []
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      else
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        (eq RS Drule.equal_elim_rule1)
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        |> BalancedTree.dest (fn th =>
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          (th RS Conjunction.conjunctionD1, th RS Conjunction.conjunctionD2)) n;
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  in (intro, dests) end;
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fun define_class (bclass, raw_super) params raw_specs thy =
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  let
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    val ctxt = ProofContext.init thy;
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    val pp = ProofContext.pp ctxt;
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    (* prepare specification *)
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    val bconst = Logic.const_of_class bclass;
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    val class = Sign.full_name thy bclass;
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    val super = Sign.minimize_sort thy (Sign.certify_sort thy raw_super);
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    fun prep_axiom t =
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      (case Term.add_tfrees t [] of
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        [(a, S)] =>
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          if Sign.subsort thy (super, S) then t
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          else error ("Sort constraint of type variable " ^
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            setmp show_sorts true (Pretty.string_of_typ pp) (TFree (a, S)) ^
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            " needs to be weaker than " ^ Pretty.string_of_sort pp super)
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      | [] => t
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      | _ => error ("Multiple type variables in class axiom:\n" ^ Pretty.string_of_term pp t))
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      |> map_types (Term.map_atyps (fn TFree _ => Term.aT [] | U => U))
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   306
      |> Logic.close_form;
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   307
24681
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   308
    val axiomss = map (map (prep_axiom o Sign.cert_prop thy) o snd) raw_specs;
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17bc6af2011e moved axclass module closer to core system
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   309
    val name_atts = map fst raw_specs;
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b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   311
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   312
    (* definition *)
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   314
    val conjs = map (curry Logic.mk_inclass (Term.aT [])) super @ flat axiomss;
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   315
    val class_eq =
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   316
      Logic.mk_equals (Logic.mk_inclass (Term.aT [], class), Logic.mk_conjunction_balanced conjs);
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b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   318
    val ([def], def_thy) =
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   319
      thy
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      |> Sign.primitive_class (bclass, super)
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   321
      |> PureThy.add_defs_i false [((Thm.def_name bconst, class_eq), [])];
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   322
    val (raw_intro, (raw_classrel, raw_axioms)) =
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   323
      split_defined (length conjs) def ||> chop (length super);
19392
a631cd2117a8 add_axclass(_i): return class name only;
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   324
19418
03b01c9314fc reworded add_axclass(_i): canonical specification format,
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   325
19511
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   326
    (* facts *)
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   327
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   328
    val class_triv = Thm.class_triv def_thy class;
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   329
    val ([(_, [intro]), (_, classrel), (_, axioms)], facts_thy) =
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   330
      def_thy
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   331
      |> PureThy.note_thmss_qualified "" bconst
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   332
        [((introN, []), [([Drule.standard raw_intro], [])]),
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   333
         ((superN, []), [(map Drule.standard raw_classrel, [])]),
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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diff changeset
   334
         ((axiomsN, []), [(map (fn th => Drule.standard (class_triv RS th)) raw_axioms, [])])];
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   335
21463
42dd50268c8b completed class parameter handling in axclass.ML
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   336
    (* params *)
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   337
42dd50268c8b completed class parameter handling in axclass.ML
haftmann
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   338
    val params_typs = map (fn param =>
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   339
      let
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   340
        val ty = Sign.the_const_type thy param;
21893
29438dfa8a16 code clarifications
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   341
        val _ = case Term.typ_tvars ty
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   342
         of [_] => ()
21953
ab834c5c3858 cleanup
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   343
          | _ => error ("Exactly one type variable required in parameter " ^ quote param);
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   344
        val ty' = Term.map_type_tvar (fn _ => TFree (param_tyvarname, [class])) ty;
21463
42dd50268c8b completed class parameter handling in axclass.ML
haftmann
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diff changeset
   345
      in (param, ty') end) params;
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   346
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   347
    (* result *)
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diff changeset
   348
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5389dcd524e3 dropped some bookkeeping
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   349
    val axclass = make_axclass ((def, intro, axioms), params_typs);
19511
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   350
    val result_thy =
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   351
      facts_thy
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   352
      |> fold put_classrel (map (pair class) super ~~ classrel)
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   353
      |> Sign.add_path bconst
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   354
      |> PureThy.note_thmss_i "" (name_atts ~~ map Thm.simple_fact (unflat axiomss axioms)) |> snd
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   355
      |> Sign.restore_naming facts_thy
19574
7c761751e998 of_sort: explicit cache value;
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diff changeset
   356
      |> map_axclasses (fn (axclasses, parameters) =>
21919
b142e6506469 tuned msg;
wenzelm
parents: 21913
diff changeset
   357
        (Symtab.update (class, axclass) axclasses,
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diff changeset
   358
          fold (fn x => add_param pp (x, class)) params parameters));
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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   359
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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parents: 19503
diff changeset
   360
  in (class, result_thy) end;
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diff changeset
   361
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
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diff changeset
   362
19531
wenzelm
parents: 19528
diff changeset
   363
24589
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   364
(** axclasses with implicit parameter handling **)
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haftmann
parents: 24271
diff changeset
   365
d3fca349736c clarified class interfaces and internals
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parents: 24271
diff changeset
   366
fun define_class_params (name, raw_superclasses) raw_consts raw_dep_axioms other_consts thy =
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parents: 24271
diff changeset
   367
  let
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haftmann
parents: 24271
diff changeset
   368
    val superclasses = map (Sign.certify_class thy) raw_superclasses;
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   369
    val consts = (map o apfst o apsnd) (Sign.certify_typ thy) raw_consts;
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haftmann
parents: 24271
diff changeset
   370
    val prefix = Logic.const_of_class name;
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haftmann
parents: 24271
diff changeset
   371
    fun mk_const_name c = NameSpace.map_base (NameSpace.append prefix)
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haftmann
parents: 24271
diff changeset
   372
      (Sign.full_name thy c);
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   373
    fun add_const ((c, ty), syn) =
24770
695a8e087b9f Sign.add_consts_authentic: tags (Markup.property list);
wenzelm
parents: 24760
diff changeset
   374
      Sign.add_consts_authentic [] [(c, ty, syn)]
24589
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   375
      #> pair (mk_const_name c, ty);
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   376
    fun mk_axioms cs thy =
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   377
      raw_dep_axioms thy cs
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   378
      |> (map o apsnd o map) (Sign.cert_prop thy)
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haftmann
parents: 24271
diff changeset
   379
      |> rpair thy;
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haftmann
parents: 24271
diff changeset
   380
    fun add_constraint class (c, ty) =
24760
3f9aa1e13d16 Sign.add_const_constraint;
wenzelm
parents: 24731
diff changeset
   381
      Sign.add_const_constraint (c, SOME
24589
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   382
        (Term.map_type_tfree (fn (v, _) => TFree (v, [class])) ty));
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   383
  in
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   384
    thy
24712
64ed05609568 proper Sign operations instead of Theory aliases;
wenzelm
parents: 24681
diff changeset
   385
    |> Sign.add_path prefix
24589
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   386
    |> fold_map add_const consts
24712
64ed05609568 proper Sign operations instead of Theory aliases;
wenzelm
parents: 24681
diff changeset
   387
    ||> Sign.restore_naming thy
24589
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   388
    |-> (fn cs => mk_axioms cs
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   389
    #-> (fn axioms_prop => define_class (name, superclasses)
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   390
           (map fst cs @ other_consts) axioms_prop
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   391
    #-> (fn class => `(fn thy => get_definition thy class)
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   392
    #-> (fn {axioms, ...} => fold (add_constraint class) cs
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   393
    #> pair (class, (cs, axioms))))))
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   394
  end;
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   395
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   396
d3fca349736c clarified class interfaces and internals
haftmann
parents: 24271
diff changeset
   397
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   398
(** axiomatizations **)
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   399
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   400
local
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   401
20628
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   402
fun axiomatize prep mk name add raw_args thy =
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   403
  let
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   404
    val args = prep thy raw_args;
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   405
    val specs = mk args;
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   406
    val names = name args;
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   407
  in thy |> PureThy.add_axioms_i (map (rpair []) (names ~~ specs)) |-> fold add end;
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   408
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   409
fun ax_classrel prep =
20628
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   410
  axiomatize (map o prep) (map Logic.mk_classrel)
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   411
    (map (prefix classrel_prefix o Logic.name_classrel)) add_classrel;
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   412
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   413
fun ax_arity prep =
20628
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   414
  axiomatize prep Logic.mk_arities
b15b6f05d145 Logic.name_classrel/arities;
wenzelm
parents: 20548
diff changeset
   415
    (map (prefix arity_prefix) o Logic.name_arities) add_arity;
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   416
19706
246afe8852bc axiomatize class: Theory.add_deps;
wenzelm
parents: 19690
diff changeset
   417
fun class_const c =
246afe8852bc axiomatize class: Theory.add_deps;
wenzelm
parents: 19690
diff changeset
   418
  (Logic.const_of_class c, Term.itselfT (Term.aT []) --> propT);
246afe8852bc axiomatize class: Theory.add_deps;
wenzelm
parents: 19690
diff changeset
   419
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   420
fun ax_class prep_class prep_classrel (bclass, raw_super) thy =
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   421
  let
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   422
    val class = Sign.full_name thy bclass;
24731
c25aa6ae64ec Sign.minimize/complete_sort;
wenzelm
parents: 24712
diff changeset
   423
    val super = map (prep_class thy) raw_super |> Sign.minimize_sort thy;
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   424
  in
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   425
    thy
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   426
    |> Sign.primitive_class (bclass, super)
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   427
    |> ax_classrel prep_classrel (map (fn c => (class, c)) super)
19706
246afe8852bc axiomatize class: Theory.add_deps;
wenzelm
parents: 19690
diff changeset
   428
    |> Theory.add_deps "" (class_const class) (map class_const super)
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   429
  end;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   430
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   431
in
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   432
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   433
val axiomatize_class = ax_class Sign.read_class read_classrel;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   434
val axiomatize_class_i = ax_class Sign.certify_class cert_classrel;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   435
val axiomatize_classrel = ax_classrel read_classrel;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   436
val axiomatize_classrel_i = ax_classrel cert_classrel;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   437
val axiomatize_arity = ax_arity Sign.read_arity;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   438
val axiomatize_arity_i = ax_arity Sign.cert_arity;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   439
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   440
end;
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   441
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   442
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   443
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   444
(** explicit derivations -- cached **)
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   445
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   446
datatype cache = Types of (class * thm) list Typtab.table;
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   447
val cache = Types Typtab.empty;
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   448
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   449
local
19503
10921826b160 instances data: mutable cache;
wenzelm
parents: 19482
diff changeset
   450
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   451
fun lookup_type (Types cache) = AList.lookup (op =) o Typtab.lookup_list cache;
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   452
fun insert_type T der (Types cache) = Types (Typtab.insert_list (eq_fst op =) (T, der) cache);
19503
10921826b160 instances data: mutable cache;
wenzelm
parents: 19482
diff changeset
   453
19522
a4c790594737 of_sort: simplified derivation;
wenzelm
parents: 19511
diff changeset
   454
fun derive_type _ (_, []) = []
a4c790594737 of_sort: simplified derivation;
wenzelm
parents: 19511
diff changeset
   455
  | derive_type thy (typ, sort) =
a4c790594737 of_sort: simplified derivation;
wenzelm
parents: 19511
diff changeset
   456
      let
19528
7fbac32cded0 of_sort: option;
wenzelm
parents: 19522
diff changeset
   457
        val vars = Term.fold_atyps
19522
a4c790594737 of_sort: simplified derivation;
wenzelm
parents: 19511
diff changeset
   458
            (fn T as TFree (_, S) => insert (eq_fst op =) (T, S)
a4c790594737 of_sort: simplified derivation;
wenzelm
parents: 19511
diff changeset
   459
              | T as TVar (_, S) => insert (eq_fst op =) (T, S)
19528
7fbac32cded0 of_sort: option;
wenzelm
parents: 19522
diff changeset
   460
              | _ => I) typ [];
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   461
        val hyps = vars
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   462
          |> map (fn (T, S) => (T, Drule.sort_triv thy (T, S) ~~ S));
19642
ea7162f84677 more abstract interface to classes/arities;
wenzelm
parents: 19585
diff changeset
   463
        val ths = (typ, sort) |> Sorts.of_sort_derivation (Sign.pp thy) (Sign.classes_of thy)
22570
f166a5416b3f renamed of_sort_derivation record fields (avoid clash with Alice keywords);
wenzelm
parents: 22385
diff changeset
   464
           {class_relation =
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   465
              fn (th, c1) => fn c2 => th RS the_classrel thy (c1, c2),
22570
f166a5416b3f renamed of_sort_derivation record fields (avoid clash with Alice keywords);
wenzelm
parents: 22385
diff changeset
   466
            type_constructor =
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   467
              fn a => fn dom => fn c =>
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   468
                let val Ss = map (map snd) dom and ths = maps (map fst) dom
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   469
                in ths MRS the_arity thy a (c, Ss) end,
22570
f166a5416b3f renamed of_sort_derivation record fields (avoid clash with Alice keywords);
wenzelm
parents: 22385
diff changeset
   470
            type_variable =
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   471
              the_default [] o AList.lookup (op =) hyps};
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   472
      in ths end;
19503
10921826b160 instances data: mutable cache;
wenzelm
parents: 19482
diff changeset
   473
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   474
in
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   475
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   476
fun of_sort thy (typ, sort) cache =
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   477
  let
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   478
    val sort' = filter (is_none o lookup_type cache typ) sort;
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   479
    val ths' = derive_type thy (typ, sort')
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   480
      handle ERROR msg => cat_error msg ("The error(s) above occurred for sort derivation: " ^
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   481
        Sign.string_of_typ thy typ ^ " :: " ^ Sign.string_of_sort thy sort');
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   482
    val cache' = cache |> fold (insert_type typ) (sort' ~~ ths');
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   483
    val ths =
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   484
      sort |> map (fn c =>
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   485
        Goal.finish (the (lookup_type cache' typ c) RS
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   486
          Goal.init (Thm.cterm_of thy (Logic.mk_inclass (typ, c))))
20260
990dbc007ca6 Thm.adjust_maxidx;
wenzelm
parents: 20107
diff changeset
   487
        |> Thm.adjust_maxidx_thm ~1);
19574
7c761751e998 of_sort: explicit cache value;
wenzelm
parents: 19531
diff changeset
   488
  in (ths, cache') end;
19503
10921826b160 instances data: mutable cache;
wenzelm
parents: 19482
diff changeset
   489
19511
b4bd790f9373 renamed add_axclass(_i) to define_axclass(_i);
wenzelm
parents: 19503
diff changeset
   490
end;
19418
03b01c9314fc reworded add_axclass(_i): canonical specification format,
wenzelm
parents: 19405
diff changeset
   491
15876
a67343c6ab2a sane interfaces for tactical instance proofs (do not expand defs of theory, proper handling of sort instances);
wenzelm
parents: 15853
diff changeset
   492
end;