wenzelm@404
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(* Title: Pure/axclass.ML
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wenzelm@404
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ID: $Id$
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wenzelm@404
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Author: Markus Wenzel, TU Muenchen
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wenzelm@404
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wenzelm@19511
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Type classes as parameter records and predicates, with explicit
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wenzelm@19511
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definitions and proofs.
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wenzelm@404
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*)
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wenzelm@404
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wenzelm@404
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signature AX_CLASS =
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wenzelm@3938
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sig
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haftmann@24589
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val define_class: bstring * class list -> string list ->
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haftmann@24589
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((bstring * attribute list) * term list) list -> theory -> class * theory
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haftmann@24589
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val define_class_params: bstring * class list -> ((bstring * typ) * mixfix) list ->
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haftmann@24589
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(theory -> (string * typ) list -> ((bstring * attribute list) * term list) list) ->
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haftmann@24589
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string list -> theory ->
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haftmann@24589
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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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haftmann@24589
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val add_arity: thm -> theory -> theory
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haftmann@24589
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val prove_classrel: class * class -> tactic -> theory -> theory
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haftmann@24589
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val prove_arity: string * sort list * sort -> tactic -> theory -> theory
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haftmann@21463
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val get_definition: theory -> class -> {def: thm, intro: thm, axioms: thm list,
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haftmann@21925
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params: (string * typ) list}
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wenzelm@19243
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val class_intros: theory -> thm list
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haftmann@20107
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val class_of_param: theory -> string -> class option
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haftmann@21463
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val params_of_class: theory -> class -> string * (string * typ) list
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wenzelm@19511
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val print_axclasses: theory -> unit
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wenzelm@19405
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val cert_classrel: theory -> class * class -> class * class
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wenzelm@19405
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val read_classrel: theory -> xstring * xstring -> class * class
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wenzelm@19511
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val axiomatize_class: bstring * xstring list -> theory -> theory
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wenzelm@19511
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val axiomatize_class_i: bstring * class list -> theory -> theory
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wenzelm@19511
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val axiomatize_classrel: (xstring * xstring) list -> theory -> theory
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wenzelm@19511
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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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wenzelm@19574
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type cache
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wenzelm@19574
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val cache: cache
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wenzelm@19574
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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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wenzelm@15801
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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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wenzelm@19405
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NONE => (x, c) :: params
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wenzelm@19405
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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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wenzelm@19405
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(if c = c' then "" else " and " ^ Pretty.string_of_sort pp [c'])));
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wenzelm@423
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wenzelm@19405
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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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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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wenzelm@19392
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wenzelm@19574
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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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wenzelm@19574
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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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haftmann@20107
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fun class_of_param thy =
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AList.lookup (op =) (#2 (get_axclasses thy));
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wenzelm@24847
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fun params_of_class thy class = (Name.aT, #params (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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wenzelm@19528
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wenzelm@19574
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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 " ^
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Syntax.string_of_classrel (ProofContext.init thy) [c1, c2]));
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wenzelm@19528
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wenzelm@19574
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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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wenzelm@19574
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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 " ^
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wenzelm@24920
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Syntax.string_of_arity (ProofContext.init thy) (a, Ss, [c])));
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wenzelm@19503
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wenzelm@19574
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fun put_arity ((t, Ss, c), th) = map_instances (fn (classrel, arities) =>
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wenzelm@19574
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(classrel, arities |> Symtab.insert_list (eq_fst op =) (t, ((c, Ss), th))));
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wenzelm@19503
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wenzelm@19503
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wenzelm@19511
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(* print data *)
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wenzelm@19460
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wenzelm@19460
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fun print_axclasses thy =
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wenzelm@19460
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let
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wenzelm@19574
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val axclasses = #1 (get_axclasses thy);
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wenzelm@19460
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val ctxt = ProofContext.init thy;
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wenzelm@19460
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haftmann@21925
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fun pretty_axclass (class, AxClass {def, intro, axioms, params}) =
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wenzelm@19460
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Pretty.block (Pretty.fbreaks
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wenzelm@19460
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[Pretty.block
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wenzelm@24920
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[Pretty.str "class ", Syntax.pretty_sort ctxt [class], Pretty.str ":"],
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wenzelm@19460
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Pretty.strs ("parameters:" :: params_of thy class),
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wenzelm@19460
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ProofContext.pretty_fact ctxt ("def", [def]),
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wenzelm@19460
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ProofContext.pretty_fact ctxt (introN, [intro]),
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ProofContext.pretty_fact ctxt (axiomsN, axioms)]);
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wenzelm@19460
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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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wenzelm@19418
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(* class relations *)
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wenzelm@19418
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wenzelm@19405
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fun cert_classrel thy raw_rel =
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wenzelm@19405
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let
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wenzelm@19405
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val (c1, c2) = pairself (Sign.certify_class thy) raw_rel;
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wenzelm@24271
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val _ = Sign.primitive_classrel (c1, c2) (Theory.copy thy);
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wenzelm@19405
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val _ =
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wenzelm@19460
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(case subtract (op =) (all_params_of thy [c1]) (all_params_of thy [c2]) of
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wenzelm@19405
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[] => ()
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wenzelm@19405
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| xs => raise TYPE ("Class " ^ Sign.string_of_sort thy [c1] ^ " lacks parameter(s) " ^
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wenzelm@19405
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commas_quote xs ^ " of " ^ Sign.string_of_sort thy [c2], [], []));
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wenzelm@19405
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in (c1, c2) end;
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wenzelm@19405
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wenzelm@19405
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fun read_classrel thy raw_rel =
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wenzelm@19405
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cert_classrel thy (pairself (Sign.read_class thy) raw_rel)
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wenzelm@19405
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handle TYPE (msg, _, _) => error msg;
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wenzelm@19405
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wenzelm@19405
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wenzelm@19405
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(* primitive rules *)
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wenzelm@19405
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fun add_classrel th thy =
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wenzelm@19405
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let
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wenzelm@19405
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fun err () = raise THM ("add_classrel: malformed class relation", 0, [th]);
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wenzelm@22691
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val prop = Thm.plain_prop_of (Thm.transfer thy th);
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wenzelm@19405
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val rel = Logic.dest_classrel prop handle TERM _ => err ();
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wenzelm@19405
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val (c1, c2) = cert_classrel thy rel handle TYPE _ => err ();
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wenzelm@19574
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in
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wenzelm@19574
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thy
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wenzelm@19574
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|> Sign.primitive_classrel (c1, c2)
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wenzelm@19574
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|> put_classrel ((c1, c2), Drule.unconstrainTs th)
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wenzelm@19574
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end;
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wenzelm@404
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wenzelm@19405
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fun add_arity th thy =
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wenzelm@15876
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let
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wenzelm@19528
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fun err () = raise THM ("add_arity: malformed type arity", 0, [th]);
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wenzelm@22691
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val prop = Thm.plain_prop_of (Thm.transfer thy th);
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wenzelm@19528
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val (t, Ss, c) = Logic.dest_arity prop handle TERM _ => err ();
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wenzelm@24731
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val _ = map (Sign.certify_sort thy) Ss = Ss orelse err ();
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wenzelm@19574
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in
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wenzelm@19574
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thy
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wenzelm@19574
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|> Sign.primitive_arity (t, Ss, [c])
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wenzelm@19574
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|> put_arity ((t, Ss, c), Drule.unconstrainTs th)
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wenzelm@19574
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end;
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wenzelm@15876
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wenzelm@15876
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wenzelm@19243
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(* tactical proofs *)
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wenzelm@15876
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wenzelm@19405
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fun prove_classrel raw_rel tac thy =
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wenzelm@19243
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let
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wenzelm@24920
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val ctxt = ProofContext.init thy;
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wenzelm@19405
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val (c1, c2) = cert_classrel thy raw_rel;
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wenzelm@24920
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val th = Goal.prove ctxt [] []
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wenzelm@20049
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(Logic.mk_classrel (c1, c2)) (fn _ => tac) handle ERROR msg =>
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wenzelm@19243
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cat_error msg ("The error(s) above occurred while trying to prove class relation " ^
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wenzelm@24920
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quote (Syntax.string_of_classrel ctxt [c1, c2]));
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wenzelm@19511
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in
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wenzelm@19511
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thy
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wenzelm@20628
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|> PureThy.add_thms [((prefix classrel_prefix (Logic.name_classrel (c1, c2)), th), [])]
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wenzelm@19511
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|-> (fn [th'] => add_classrel th')
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wenzelm@19511
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end;
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wenzelm@15876
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wenzelm@19243
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fun prove_arity raw_arity tac thy =
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wenzelm@15876
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let
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wenzelm@24920
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val ctxt = ProofContext.init thy;
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wenzelm@19243
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val arity = Sign.cert_arity thy raw_arity;
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wenzelm@20628
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val names = map (prefix arity_prefix) (Logic.name_arities arity);
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wenzelm@19405
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val props = Logic.mk_arities arity;
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wenzelm@24920
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val ths = Goal.prove_multi ctxt [] [] props
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wenzelm@21687
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(fn _ => Goal.precise_conjunction_tac (length props) 1 THEN tac) handle ERROR msg =>
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wenzelm@19243
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cat_error msg ("The error(s) above occurred while trying to prove type arity " ^
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wenzelm@24920
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quote (Syntax.string_of_arity ctxt arity));
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wenzelm@19511
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in
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wenzelm@19511
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thy
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wenzelm@20628
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|> PureThy.add_thms (map (rpair []) (names ~~ ths))
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wenzelm@19511
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|-> fold add_arity
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wenzelm@19511
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end;
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wenzelm@19392
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wenzelm@19418
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wenzelm@19511
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wenzelm@19511
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(** class definitions **)
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wenzelm@19511
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wenzelm@23421
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fun split_defined n eq =
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wenzelm@23421
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let
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wenzelm@23421
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val intro =
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wenzelm@23421
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(eq RS Drule.equal_elim_rule2)
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wenzelm@23421
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|> Conjunction.curry_balanced n
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wenzelm@23421
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|> n = 0 ? Thm.eq_assumption 1;
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wenzelm@23421
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val dests =
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wenzelm@23421
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if n = 0 then []
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wenzelm@23421
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else
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wenzelm@23421
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(eq RS Drule.equal_elim_rule1)
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wenzelm@23421
|
280 |
|> BalancedTree.dest (fn th =>
|
wenzelm@23421
|
281 |
(th RS Conjunction.conjunctionD1, th RS Conjunction.conjunctionD2)) n;
|
wenzelm@23421
|
282 |
in (intro, dests) end;
|
wenzelm@23421
|
283 |
|
haftmann@22745
|
284 |
fun define_class (bclass, raw_super) params raw_specs thy =
|
wenzelm@19511
|
285 |
let
|
wenzelm@19511
|
286 |
val ctxt = ProofContext.init thy;
|
wenzelm@19511
|
287 |
val pp = ProofContext.pp ctxt;
|
wenzelm@19511
|
288 |
|
wenzelm@19511
|
289 |
|
wenzelm@19511
|
290 |
(* prepare specification *)
|
wenzelm@19511
|
291 |
|
wenzelm@19511
|
292 |
val bconst = Logic.const_of_class bclass;
|
wenzelm@19511
|
293 |
val class = Sign.full_name thy bclass;
|
wenzelm@24731
|
294 |
val super = Sign.minimize_sort thy (Sign.certify_sort thy raw_super);
|
wenzelm@19511
|
295 |
|
wenzelm@19511
|
296 |
fun prep_axiom t =
|
wenzelm@19511
|
297 |
(case Term.add_tfrees t [] of
|
wenzelm@19511
|
298 |
[(a, S)] =>
|
wenzelm@19511
|
299 |
if Sign.subsort thy (super, S) then t
|
wenzelm@19511
|
300 |
else error ("Sort constraint of type variable " ^
|
wenzelm@19511
|
301 |
setmp show_sorts true (Pretty.string_of_typ pp) (TFree (a, S)) ^
|
wenzelm@19511
|
302 |
" needs to be weaker than " ^ Pretty.string_of_sort pp super)
|
wenzelm@19511
|
303 |
| [] => t
|
wenzelm@19511
|
304 |
| _ => error ("Multiple type variables in class axiom:\n" ^ Pretty.string_of_term pp t))
|
wenzelm@20548
|
305 |
|> map_types (Term.map_atyps (fn TFree _ => Term.aT [] | U => U))
|
wenzelm@19511
|
306 |
|> Logic.close_form;
|
wenzelm@19511
|
307 |
|
wenzelm@24681
|
308 |
val axiomss = map (map (prep_axiom o Sign.cert_prop thy) o snd) raw_specs;
|
haftmann@22745
|
309 |
val name_atts = map fst raw_specs;
|
wenzelm@19511
|
310 |
|
wenzelm@19511
|
311 |
|
wenzelm@19511
|
312 |
(* definition *)
|
wenzelm@19511
|
313 |
|
wenzelm@19511
|
314 |
val conjs = map (curry Logic.mk_inclass (Term.aT [])) super @ flat axiomss;
|
wenzelm@19511
|
315 |
val class_eq =
|
wenzelm@23421
|
316 |
Logic.mk_equals (Logic.mk_inclass (Term.aT [], class), Logic.mk_conjunction_balanced conjs);
|
wenzelm@19511
|
317 |
|
wenzelm@19511
|
318 |
val ([def], def_thy) =
|
wenzelm@19511
|
319 |
thy
|
wenzelm@19511
|
320 |
|> Sign.primitive_class (bclass, super)
|
wenzelm@19511
|
321 |
|> PureThy.add_defs_i false [((Thm.def_name bconst, class_eq), [])];
|
wenzelm@19511
|
322 |
val (raw_intro, (raw_classrel, raw_axioms)) =
|
wenzelm@23421
|
323 |
split_defined (length conjs) def ||> chop (length super);
|
wenzelm@19511
|
324 |
|
wenzelm@19511
|
325 |
|
wenzelm@19511
|
326 |
(* facts *)
|
wenzelm@19511
|
327 |
|
wenzelm@19511
|
328 |
val class_triv = Thm.class_triv def_thy class;
|
wenzelm@19511
|
329 |
val ([(_, [intro]), (_, classrel), (_, axioms)], facts_thy) =
|
wenzelm@19511
|
330 |
def_thy
|
wenzelm@19511
|
331 |
|> PureThy.note_thmss_qualified "" bconst
|
wenzelm@19511
|
332 |
[((introN, []), [([Drule.standard raw_intro], [])]),
|
wenzelm@19511
|
333 |
((superN, []), [(map Drule.standard raw_classrel, [])]),
|
wenzelm@19511
|
334 |
((axiomsN, []), [(map (fn th => Drule.standard (class_triv RS th)) raw_axioms, [])])];
|
wenzelm@19511
|
335 |
|
haftmann@21463
|
336 |
(* params *)
|
haftmann@21463
|
337 |
|
haftmann@21463
|
338 |
val params_typs = map (fn param =>
|
haftmann@21463
|
339 |
let
|
haftmann@21463
|
340 |
val ty = Sign.the_const_type thy param;
|
haftmann@21893
|
341 |
val _ = case Term.typ_tvars ty
|
haftmann@21893
|
342 |
of [_] => ()
|
haftmann@21953
|
343 |
| _ => error ("Exactly one type variable required in parameter " ^ quote param);
|
wenzelm@24847
|
344 |
val ty' = Term.map_type_tvar (fn _ => TFree (Name.aT, [class])) ty;
|
haftmann@21463
|
345 |
in (param, ty') end) params;
|
wenzelm@19511
|
346 |
|
wenzelm@24847
|
347 |
|
wenzelm@19511
|
348 |
(* result *)
|
wenzelm@19511
|
349 |
|
haftmann@21925
|
350 |
val axclass = make_axclass ((def, intro, axioms), params_typs);
|
wenzelm@19511
|
351 |
val result_thy =
|
wenzelm@19511
|
352 |
facts_thy
|
wenzelm@19574
|
353 |
|> fold put_classrel (map (pair class) super ~~ classrel)
|
wenzelm@19511
|
354 |
|> Sign.add_path bconst
|
wenzelm@19511
|
355 |
|> PureThy.note_thmss_i "" (name_atts ~~ map Thm.simple_fact (unflat axiomss axioms)) |> snd
|
wenzelm@19511
|
356 |
|> Sign.restore_naming facts_thy
|
wenzelm@19574
|
357 |
|> map_axclasses (fn (axclasses, parameters) =>
|
wenzelm@21919
|
358 |
(Symtab.update (class, axclass) axclasses,
|
wenzelm@19574
|
359 |
fold (fn x => add_param pp (x, class)) params parameters));
|
wenzelm@19511
|
360 |
|
wenzelm@19511
|
361 |
in (class, result_thy) end;
|
wenzelm@19511
|
362 |
|
wenzelm@19511
|
363 |
|
wenzelm@19531
|
364 |
|
haftmann@24589
|
365 |
(** axclasses with implicit parameter handling **)
|
haftmann@24589
|
366 |
|
haftmann@24589
|
367 |
fun define_class_params (name, raw_superclasses) raw_consts raw_dep_axioms other_consts thy =
|
haftmann@24589
|
368 |
let
|
haftmann@24589
|
369 |
val superclasses = map (Sign.certify_class thy) raw_superclasses;
|
haftmann@24589
|
370 |
val consts = (map o apfst o apsnd) (Sign.certify_typ thy) raw_consts;
|
haftmann@24589
|
371 |
val prefix = Logic.const_of_class name;
|
haftmann@24589
|
372 |
fun mk_const_name c = NameSpace.map_base (NameSpace.append prefix)
|
haftmann@24589
|
373 |
(Sign.full_name thy c);
|
haftmann@24589
|
374 |
fun add_const ((c, ty), syn) =
|
wenzelm@24770
|
375 |
Sign.add_consts_authentic [] [(c, ty, syn)]
|
haftmann@24589
|
376 |
#> pair (mk_const_name c, ty);
|
haftmann@24589
|
377 |
fun mk_axioms cs thy =
|
haftmann@24589
|
378 |
raw_dep_axioms thy cs
|
haftmann@24589
|
379 |
|> (map o apsnd o map) (Sign.cert_prop thy)
|
haftmann@24589
|
380 |
|> rpair thy;
|
haftmann@24589
|
381 |
fun add_constraint class (c, ty) =
|
wenzelm@24760
|
382 |
Sign.add_const_constraint (c, SOME
|
haftmann@24589
|
383 |
(Term.map_type_tfree (fn (v, _) => TFree (v, [class])) ty));
|
haftmann@24589
|
384 |
in
|
haftmann@24589
|
385 |
thy
|
wenzelm@24712
|
386 |
|> Sign.add_path prefix
|
haftmann@24589
|
387 |
|> fold_map add_const consts
|
wenzelm@24712
|
388 |
||> Sign.restore_naming thy
|
haftmann@24589
|
389 |
|-> (fn cs => mk_axioms cs
|
haftmann@24589
|
390 |
#-> (fn axioms_prop => define_class (name, superclasses)
|
haftmann@24589
|
391 |
(map fst cs @ other_consts) axioms_prop
|
haftmann@24589
|
392 |
#-> (fn class => `(fn thy => get_definition thy class)
|
haftmann@24589
|
393 |
#-> (fn {axioms, ...} => fold (add_constraint class) cs
|
haftmann@24589
|
394 |
#> pair (class, (cs, axioms))))))
|
haftmann@24589
|
395 |
end;
|
haftmann@24589
|
396 |
|
haftmann@24589
|
397 |
|
haftmann@24589
|
398 |
|
wenzelm@19511
|
399 |
(** axiomatizations **)
|
wenzelm@19511
|
400 |
|
wenzelm@19511
|
401 |
local
|
wenzelm@19511
|
402 |
|
wenzelm@20628
|
403 |
fun axiomatize prep mk name add raw_args thy =
|
wenzelm@20628
|
404 |
let
|
wenzelm@20628
|
405 |
val args = prep thy raw_args;
|
wenzelm@20628
|
406 |
val specs = mk args;
|
wenzelm@20628
|
407 |
val names = name args;
|
wenzelm@20628
|
408 |
in thy |> PureThy.add_axioms_i (map (rpair []) (names ~~ specs)) |-> fold add end;
|
wenzelm@19511
|
409 |
|
wenzelm@19511
|
410 |
fun ax_classrel prep =
|
wenzelm@20628
|
411 |
axiomatize (map o prep) (map Logic.mk_classrel)
|
wenzelm@20628
|
412 |
(map (prefix classrel_prefix o Logic.name_classrel)) add_classrel;
|
wenzelm@19511
|
413 |
|
wenzelm@19511
|
414 |
fun ax_arity prep =
|
wenzelm@20628
|
415 |
axiomatize prep Logic.mk_arities
|
wenzelm@20628
|
416 |
(map (prefix arity_prefix) o Logic.name_arities) add_arity;
|
wenzelm@19511
|
417 |
|
wenzelm@19706
|
418 |
fun class_const c =
|
wenzelm@19706
|
419 |
(Logic.const_of_class c, Term.itselfT (Term.aT []) --> propT);
|
wenzelm@19706
|
420 |
|
wenzelm@19511
|
421 |
fun ax_class prep_class prep_classrel (bclass, raw_super) thy =
|
wenzelm@19511
|
422 |
let
|
wenzelm@19511
|
423 |
val class = Sign.full_name thy bclass;
|
wenzelm@24731
|
424 |
val super = map (prep_class thy) raw_super |> Sign.minimize_sort thy;
|
wenzelm@19511
|
425 |
in
|
wenzelm@19511
|
426 |
thy
|
wenzelm@19511
|
427 |
|> Sign.primitive_class (bclass, super)
|
wenzelm@19511
|
428 |
|> ax_classrel prep_classrel (map (fn c => (class, c)) super)
|
wenzelm@19706
|
429 |
|> Theory.add_deps "" (class_const class) (map class_const super)
|
wenzelm@19511
|
430 |
end;
|
wenzelm@19511
|
431 |
|
wenzelm@19511
|
432 |
in
|
wenzelm@19511
|
433 |
|
wenzelm@19511
|
434 |
val axiomatize_class = ax_class Sign.read_class read_classrel;
|
wenzelm@19511
|
435 |
val axiomatize_class_i = ax_class Sign.certify_class cert_classrel;
|
wenzelm@19511
|
436 |
val axiomatize_classrel = ax_classrel read_classrel;
|
wenzelm@19511
|
437 |
val axiomatize_classrel_i = ax_classrel cert_classrel;
|
wenzelm@19511
|
438 |
val axiomatize_arity = ax_arity Sign.read_arity;
|
wenzelm@19511
|
439 |
val axiomatize_arity_i = ax_arity Sign.cert_arity;
|
wenzelm@19511
|
440 |
|
wenzelm@19511
|
441 |
end;
|
wenzelm@19511
|
442 |
|
wenzelm@19511
|
443 |
|
wenzelm@19511
|
444 |
|
wenzelm@19511
|
445 |
(** explicit derivations -- cached **)
|
wenzelm@19511
|
446 |
|
wenzelm@19574
|
447 |
datatype cache = Types of (class * thm) list Typtab.table;
|
wenzelm@19574
|
448 |
val cache = Types Typtab.empty;
|
wenzelm@19574
|
449 |
|
wenzelm@19511
|
450 |
local
|
wenzelm@19503
|
451 |
|
wenzelm@19574
|
452 |
fun lookup_type (Types cache) = AList.lookup (op =) o Typtab.lookup_list cache;
|
wenzelm@19574
|
453 |
fun insert_type T der (Types cache) = Types (Typtab.insert_list (eq_fst op =) (T, der) cache);
|
wenzelm@19503
|
454 |
|
wenzelm@19522
|
455 |
fun derive_type _ (_, []) = []
|
wenzelm@19522
|
456 |
| derive_type thy (typ, sort) =
|
wenzelm@19522
|
457 |
let
|
wenzelm@19528
|
458 |
val vars = Term.fold_atyps
|
wenzelm@19522
|
459 |
(fn T as TFree (_, S) => insert (eq_fst op =) (T, S)
|
wenzelm@19522
|
460 |
| T as TVar (_, S) => insert (eq_fst op =) (T, S)
|
wenzelm@19528
|
461 |
| _ => I) typ [];
|
wenzelm@19574
|
462 |
val hyps = vars
|
wenzelm@19574
|
463 |
|> map (fn (T, S) => (T, Drule.sort_triv thy (T, S) ~~ S));
|
wenzelm@19642
|
464 |
val ths = (typ, sort) |> Sorts.of_sort_derivation (Sign.pp thy) (Sign.classes_of thy)
|
wenzelm@22570
|
465 |
{class_relation =
|
wenzelm@19574
|
466 |
fn (th, c1) => fn c2 => th RS the_classrel thy (c1, c2),
|
wenzelm@22570
|
467 |
type_constructor =
|
wenzelm@19574
|
468 |
fn a => fn dom => fn c =>
|
wenzelm@19574
|
469 |
let val Ss = map (map snd) dom and ths = maps (map fst) dom
|
wenzelm@19574
|
470 |
in ths MRS the_arity thy a (c, Ss) end,
|
wenzelm@22570
|
471 |
type_variable =
|
wenzelm@19574
|
472 |
the_default [] o AList.lookup (op =) hyps};
|
wenzelm@19574
|
473 |
in ths end;
|
wenzelm@19503
|
474 |
|
wenzelm@19511
|
475 |
in
|
wenzelm@19511
|
476 |
|
wenzelm@19574
|
477 |
fun of_sort thy (typ, sort) cache =
|
wenzelm@19574
|
478 |
let
|
wenzelm@19574
|
479 |
val sort' = filter (is_none o lookup_type cache typ) sort;
|
wenzelm@19574
|
480 |
val ths' = derive_type thy (typ, sort')
|
wenzelm@19574
|
481 |
handle ERROR msg => cat_error msg ("The error(s) above occurred for sort derivation: " ^
|
wenzelm@19574
|
482 |
Sign.string_of_typ thy typ ^ " :: " ^ Sign.string_of_sort thy sort');
|
wenzelm@19574
|
483 |
val cache' = cache |> fold (insert_type typ) (sort' ~~ ths');
|
wenzelm@19574
|
484 |
val ths =
|
wenzelm@19574
|
485 |
sort |> map (fn c =>
|
wenzelm@19574
|
486 |
Goal.finish (the (lookup_type cache' typ c) RS
|
wenzelm@19574
|
487 |
Goal.init (Thm.cterm_of thy (Logic.mk_inclass (typ, c))))
|
wenzelm@20260
|
488 |
|> Thm.adjust_maxidx_thm ~1);
|
wenzelm@19574
|
489 |
in (ths, cache') end;
|
wenzelm@19503
|
490 |
|
wenzelm@19511
|
491 |
end;
|
wenzelm@19418
|
492 |
|
wenzelm@15876
|
493 |
end;
|