src/HOL/Tools/datatype_package.ML
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(*  Title:      HOL/Tools/datatype_package.ML
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    ID:         $Id$
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    Author:     Stefan Berghofer
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    Copyright   1998  TU Muenchen
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Datatype package for Isabelle/HOL.
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*)
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signature BASIC_DATATYPE_PACKAGE =
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sig
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  val induct_tac : string -> int -> tactic
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  val exhaust_tac : string -> int -> tactic
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  val distinct_simproc : simproc
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end;
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signature DATATYPE_PACKAGE =
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sig
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  include BASIC_DATATYPE_PACKAGE
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  val quiet_mode : bool ref
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  val add_datatype : bool -> string list -> (string list * bstring * mixfix *
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    (bstring * string list * mixfix) list) list -> theory -> theory *
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      {distinct : thm list list,
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       inject : thm list list,
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       exhaustion : thm list,
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       rec_thms : thm list,
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       case_thms : thm list list,
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       split_thms : (thm * thm) list,
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       induction : thm,
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       size : thm list,
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       simps : thm list}
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  val add_datatype_i : bool -> string list -> (string list * bstring * mixfix *
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    (bstring * typ list * mixfix) list) list -> theory -> theory *
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      {distinct : thm list list,
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       inject : thm list list,
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       exhaustion : thm list,
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       rec_thms : thm list,
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       case_thms : thm list list,
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       split_thms : (thm * thm) list,
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       induction : thm,
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       size : thm list,
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       simps : thm list}
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  val rep_datatype_i : string list option -> (thm * theory attribute list) list list ->
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    (thm * theory attribute list) list list -> (thm * theory attribute list) -> theory -> theory *
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      {distinct : thm list list,
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       inject : thm list list,
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       exhaustion : thm list,
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       rec_thms : thm list,
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       case_thms : thm list list,
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       split_thms : (thm * thm) list,
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       induction : thm,
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       size : thm list,
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       simps : thm list}
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  val rep_datatype : string list option -> (xstring * Args.src list) list list ->
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    (xstring * Args.src list) list list -> xstring * Args.src list -> theory -> theory *
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      {distinct : thm list list,
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       inject : thm list list,
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       exhaustion : thm list,
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       rec_thms : thm list,
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       case_thms : thm list list,
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       split_thms : (thm * thm) list,
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       induction : thm,
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       size : thm list,
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       simps : thm list}
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  val get_datatypes : theory -> DatatypeAux.datatype_info Symtab.table
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  val print_datatypes : theory -> unit
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  val datatype_info_sg : Sign.sg -> string -> DatatypeAux.datatype_info option
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  val datatype_info : theory -> string -> DatatypeAux.datatype_info option
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  val datatype_info_sg_err : Sign.sg -> string -> DatatypeAux.datatype_info
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  val datatype_info_err : theory -> string -> DatatypeAux.datatype_info
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  val constrs_of : theory -> string -> term list option
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  val constrs_of_sg : Sign.sg -> string -> term list option
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  val case_const_of : theory -> string -> term option
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  val setup: (theory -> theory) list
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end;
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structure DatatypePackage : DATATYPE_PACKAGE =
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struct
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open DatatypeAux;
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val quiet_mode = quiet_mode;
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(* data kind 'HOL/datatypes' *)
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structure DatatypesArgs =
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struct
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  val name = "HOL/datatypes";
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  type T = datatype_info Symtab.table;
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  val empty = Symtab.empty;
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  val copy = I;
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  val prep_ext = I;
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  val merge: T * T -> T = Symtab.merge (K true);
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  fun print sg tab =
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    Pretty.writeln (Pretty.strs ("datatypes:" ::
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      map #1 (Sign.cond_extern_table sg Sign.typeK tab)));
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end;
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structure DatatypesData = TheoryDataFun(DatatypesArgs);
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val get_datatypes_sg = DatatypesData.get_sg;
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val get_datatypes = DatatypesData.get;
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val put_datatypes = DatatypesData.put;
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val print_datatypes = DatatypesData.print;
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(** theory information about datatypes **)
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fun datatype_info_sg sg name = Symtab.lookup (get_datatypes_sg sg, name);
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fun datatype_info_sg_err sg name = (case datatype_info_sg sg name of
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      Some info => info
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    | None => error ("Unknown datatype " ^ quote name));
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val datatype_info = datatype_info_sg o Theory.sign_of;
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fun datatype_info_err thy name = (case datatype_info thy name of
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      Some info => info
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    | None => error ("Unknown datatype " ^ quote name));
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fun constrs_of_sg sg tname = (case datatype_info_sg sg tname of
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   Some {index, descr, ...} =>
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     let val (_, _, constrs) = the (assoc (descr, index))
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     in Some (map (fn (cname, _) => Const (cname, the (Sign.const_type sg cname))) constrs)
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     end
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 | _ => None);
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val constrs_of = constrs_of_sg o Theory.sign_of;
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fun case_const_of thy tname = (case datatype_info thy tname of
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   Some {case_name, ...} => Some (Const (case_name, the (Sign.const_type
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     (Theory.sign_of thy) case_name)))
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 | _ => None);
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fun find_tname var Bi =
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  let val frees = map dest_Free (term_frees Bi)
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      val params = Logic.strip_params Bi;
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  in case assoc (frees @ params, var) of
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       None => error ("No such variable in subgoal: " ^ quote var)
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     | Some(Type (tn, _)) => tn
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     | _ => error ("Cannot determine type of " ^ quote var)
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  end;
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fun infer_tname state sign i aterm =
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  let
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    val (_, _, Bi, _) = dest_state (state, i)
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    val params = Logic.strip_params Bi;   (*params of subgoal i*)
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    val params = rev (rename_wrt_term Bi params);   (*as they are printed*)
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    val (types, sorts) = types_sorts state;
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    fun types' (a, ~1) = (case assoc (params, a) of None => types(a, ~1) | sm => sm)
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      | types' ixn = types ixn;
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    val (ct, _) = read_def_cterm (sign, types', sorts) [] false (aterm, TypeInfer.logicT);
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  in case #T (rep_cterm ct) of
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       Type (tn, _) => tn
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     | _ => error ("Cannot determine type of " ^ quote aterm)
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  end;
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(*Warn if the (induction) variable occurs Free among the premises, which
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  usually signals a mistake.  But calls the tactic either way!*)
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fun occs_in_prems tacf vars = 
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  SUBGOAL (fn (Bi, i) =>
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	   (if  exists (fn Free (a, _) => a mem vars)
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	              (foldr add_term_frees (#2 (strip_context Bi), []))
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	     then warning "Induction variable occurs also among premises!"
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	     else ();
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	    tacf i));
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(* generic induction tactic for datatypes *)
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fun induct_tac s i state =
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  let
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    val vars = Syntax.read_idents s;
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    val (_, _, Bi, _) = dest_state (state, i);
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    val {sign, ...} = rep_thm state;
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    val tn = find_tname (hd vars) Bi;
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    val {induction, ...} = datatype_info_sg_err sign tn;
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    val ind_vnames = map (fn (_ $ Var (ixn, _)) =>
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      implode (tl (explode (Syntax.string_of_vname ixn))))
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        (dest_conj (HOLogic.dest_Trueprop (concl_of induction)));
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    val insts = (ind_vnames ~~ vars) handle LIST _ =>
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      error ("Induction rule for type " ^ tn ^ " has different number of variables")
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  in
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    occs_in_prems (res_inst_tac insts induction) vars i state
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  end;
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(* generic exhaustion tactic for datatypes *)
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fun exhaust_tac aterm i state =
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  let
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    val {sign, ...} = rep_thm state;
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    val tn = infer_tname state sign i aterm;
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    val {exhaustion, ...} = datatype_info_sg_err sign tn;
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    val _ $ Var (ixn, _) $ _ = HOLogic.dest_Trueprop
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      (hd (Logic.strip_assums_hyp (hd (prems_of exhaustion))));
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    val exh_vname = implode (tl (explode (Syntax.string_of_vname ixn)))
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  in
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    res_inst_tac [(exh_vname, aterm)] exhaustion i state
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  end;
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(**** simplification procedure for showing distinctness of constructors ****)
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fun stripT (i, Type ("fun", [_, T])) = stripT (i + 1, T)
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  | stripT p = p;
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fun stripC (i, f $ x) = stripC (i + 1, f)
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  | stripC p = p;
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val distinctN = "constr_distinct";
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exception ConstrDistinct of term;
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fun distinct_proc sg _ (t as Const ("op =", _) $ t1 $ t2) =
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  (case (stripC (0, t1), stripC (0, t2)) of
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     ((i, Const (cname1, T1)), (j, Const (cname2, T2))) =>
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         (case (stripT (0, T1), stripT (0, T2)) of
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            ((i', Type (tname1, _)), (j', Type (tname2, _))) =>
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                if tname1 = tname2 andalso not (cname1 = cname2) andalso i = i' andalso j = j' then
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                   (case (constrs_of_sg sg tname1) of
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                      Some constrs => let val cnames = map (fst o dest_Const) constrs
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                        in if cname1 mem cnames andalso cname2 mem cnames then
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                             let val eq_t = Logic.mk_equals (t, Const ("False", HOLogic.boolT));
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                                 val eq_ct = cterm_of sg eq_t;
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                                 val Datatype_thy = theory "Datatype";
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                                 val [In0_inject, In1_inject, In0_not_In1, In1_not_In0] =
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                                   map (get_thm Datatype_thy)
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                                     ["In0_inject", "In1_inject", "In0_not_In1", "In1_not_In0"]
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                             in (case (#distinct (datatype_info_sg_err sg tname1)) of
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                                 QuickAndDirty => Some (Thm.invoke_oracle
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                                   Datatype_thy distinctN (sg, ConstrDistinct eq_t))
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                               | FewConstrs thms => Some (prove_goalw_cterm [] eq_ct (K
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                                   [rtac eq_reflection 1, rtac iffI 1, rtac notE 1,
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                                    atac 2, resolve_tac thms 1, etac FalseE 1]))
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                               | ManyConstrs (thm, ss) => Some (prove_goalw_cterm [] eq_ct (K
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                                   [rtac eq_reflection 1, rtac iffI 1, dtac thm 1,
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                                    full_simp_tac ss 1,
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                                    REPEAT (dresolve_tac [In0_inject, In1_inject] 1),
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                                    eresolve_tac [In0_not_In1 RS notE, In1_not_In0 RS notE] 1,
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                                    etac FalseE 1])))
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                             end
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                           else None
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                        end
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                    | None => None)
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                else None
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          | _ => None)
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   | _ => None)
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  | distinct_proc sg _ _ = None;
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val distinct_pats = [Thm.read_cterm (Theory.sign_of HOL.thy) ("s = t", HOLogic.termT)];
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val distinct_simproc = mk_simproc distinctN distinct_pats distinct_proc;
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val dist_ss = HOL_ss addsimprocs [distinct_simproc];
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val simproc_setup =
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  [Theory.add_oracle (distinctN, fn (_, ConstrDistinct t) => t),
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   fn thy => (simpset_ref_of thy := simpset_of thy addsimprocs [distinct_simproc]; thy)];
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(* prepare types *)
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fun read_typ sign ((Ts, sorts), str) =
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  let
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    val T = Type.no_tvars (Sign.read_typ (sign, (curry assoc)
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      (map (apfst (rpair ~1)) sorts)) str) handle TYPE (msg, _, _) => error msg
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  in (Ts @ [T], add_typ_tfrees (T, sorts)) end;
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fun cert_typ sign ((Ts, sorts), raw_T) =
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  let
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    val T = Type.no_tvars (Sign.certify_typ sign raw_T) handle
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      TYPE (msg, _, _) => error msg;
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    val sorts' = add_typ_tfrees (T, sorts)
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  in (Ts @ [T],
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      case duplicates (map fst sorts') of
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         [] => sorts'
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       | dups => error ("Inconsistent sort constraints for " ^ commas dups))
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  end;
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(**** make datatype info ****)
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fun make_dt_info descr induct reccomb_names rec_thms
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  ((((((((i, (_, (tname, _, _))), case_name), case_thms),
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    exhaustion_thm), distinct_thm), inject), nchotomy), case_cong) = (tname,
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      {index = i,
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       descr = descr,
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       rec_names = reccomb_names,
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       rec_rewrites = rec_thms,
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       case_name = case_name,
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       case_rewrites = case_thms,
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       induction = induct,
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       exhaustion = exhaustion_thm,
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       distinct = distinct_thm,
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       inject = inject,
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       nchotomy = nchotomy,
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       case_cong = case_cong});
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fun store_clasimp thy (cla, simp) =
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  (claset_ref_of thy := cla; simpset_ref_of thy := simp);
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(********************* axiomatic introduction of datatypes ********************)
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fun add_and_get_axioms label tnames ts thy =
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  foldr (fn ((tname, t), (thy', axs)) =>
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    let
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      val thy'' = thy' |>
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        Theory.add_path tname |>
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        PureThy.add_axioms_i [((label, t), [])];
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      val ax = PureThy.get_thm thy'' label
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    in (Theory.parent_path thy'', ax::axs)
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    end) (tnames ~~ ts, (thy, []));
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fun add_and_get_axiomss label tnames tss thy =
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  foldr (fn ((tname, ts), (thy', axss)) =>
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    let
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      val thy'' = thy' |>
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        Theory.add_path tname |>
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        PureThy.add_axiomss_i [((label, ts), [])];
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      val axs = PureThy.get_thms thy'' label
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    in (Theory.parent_path thy'', axs::axss)
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    end) (tnames ~~ tss, (thy, []));
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fun add_datatype_axm flat_names new_type_names descr sorts types_syntax constr_syntax dt_info thy =
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   325
  let
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   326
    val descr' = flat descr;
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   327
    val recTs = get_rec_types descr' sorts;
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7de426cf179c Package now chooses type variable names more carefully to
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   328
    val used = foldr add_typ_tfree_names (recTs, []);
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   329
    val newTs = take (length (hd descr), recTs);
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   330
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   331
    val no_size = exists (fn (_, (_, _, constrs)) => exists (fn (_, cargs) => exists
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      (fn (DtType ("fun", [_, DtRec _])) => true | _ => false) cargs) constrs) descr';
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   333
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    (**** declare new types and constants ****)
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   335
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   336
    val tyvars = map (fn (_, (_, Ts, _)) => map dest_DtTFree Ts) (hd descr);
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   337
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   338
    val constr_decls = map (fn (((_, (_, _, constrs)), T), constr_syntax') =>
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   339
      map (fn ((_, cargs), (cname, mx)) =>
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   340
        (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
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   341
          (constrs ~~ constr_syntax')) ((hd descr) ~~ newTs ~~ constr_syntax);
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   342
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7de426cf179c Package now chooses type variable names more carefully to
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   343
    val rec_result_Ts = map TFree (variantlist (replicate (length descr') "'t", used) ~~
7de426cf179c Package now chooses type variable names more carefully to
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   344
      replicate (length descr') HOLogic.termS);
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   345
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   346
    val reccomb_fn_Ts = flat (map (fn (i, (_, _, constrs)) =>
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   347
      map (fn (_, cargs) =>
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   348
        let
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   349
          val Ts = map (typ_of_dtyp descr' sorts) cargs;
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   350
          val recs = filter (is_rec_type o fst) (cargs ~~ Ts);
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   351
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
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   352
          fun mk_argT (DtRec k, _) = nth_elem (k, rec_result_Ts)
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   353
            | mk_argT (DtType ("fun", [_, DtRec k]), Type ("fun", [T, _])) =
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   354
               T --> nth_elem (k, rec_result_Ts);
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parents: 6851
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   355
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
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   356
          val argTs = Ts @ map mk_argT recs
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   357
        in argTs ---> nth_elem (i, rec_result_Ts)
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   358
        end) constrs) descr');
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   359
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   360
    val big_reccomb_name = (space_implode "_" new_type_names) ^ "_rec";
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   361
    val reccomb_names = if length descr' = 1 then [big_reccomb_name] else
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   362
      (map ((curry (op ^) (big_reccomb_name ^ "_")) o string_of_int)
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   363
        (1 upto (length descr')));
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   364
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parents:
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   365
    val big_size_name = space_implode "_" new_type_names ^ "_size";
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   366
    val size_names = if length (flat (tl descr)) = 1 then [big_size_name] else
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   367
      map (fn i => big_size_name ^ "_" ^ string_of_int i)
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   368
        (1 upto length (flat (tl descr)));
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parents:
diff changeset
   369
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   370
    val freeT = TFree (variant used "'t", HOLogic.termS);
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   371
    val case_fn_Ts = map (fn (i, (_, _, constrs)) =>
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   372
      map (fn (_, cargs) =>
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   373
        let val Ts = map (typ_of_dtyp descr' sorts) cargs
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   374
        in Ts ---> freeT end) constrs) (hd descr);
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   375
0d3a168e4d44 New datatype definition package
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   376
    val case_names = map (fn s => (s ^ "_case")) new_type_names;
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diff changeset
   377
6305
4cbdb974220c Fixed bug in add_datatype_axm:
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parents: 6103
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   378
    val thy2' = thy |>
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   379
0d3a168e4d44 New datatype definition package
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   380
      (** new types **)
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   381
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diff changeset
   382
      curry (foldr (fn (((name, mx), tvs), thy') => thy' |>
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   383
          TypedefPackage.add_typedecls [(name, tvs, mx)]))
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   384
        (types_syntax ~~ tyvars) |>
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6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   385
      add_path flat_names (space_implode "_" new_type_names) |>
5177
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parents:
diff changeset
   386
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   387
      (** primrec combinators **)
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parents:
diff changeset
   388
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   389
      Theory.add_consts_i (map (fn ((name, T), T') =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   390
        (name, reccomb_fn_Ts @ [T] ---> T', NoSyn))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   391
          (reccomb_names ~~ recTs ~~ rec_result_Ts)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   392
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   393
      (** case combinators **)
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   394
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   395
      Theory.add_consts_i (map (fn ((name, T), Ts) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   396
        (name, Ts @ [T] ---> freeT, NoSyn))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   397
          (case_names ~~ newTs ~~ case_fn_Ts)) |>
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   398
      Theory.add_trrules_i (DatatypeProp.make_case_trrules new_type_names descr);
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   399
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   400
    val reccomb_names' = map (Sign.intern_const (Theory.sign_of thy2')) reccomb_names;
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   401
    val case_names' = map (Sign.intern_const (Theory.sign_of thy2')) case_names;
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   402
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   403
    val thy2 = thy2' |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   404
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   405
      (** size functions **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   406
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   407
      (if no_size then I else Theory.add_consts_i (map (fn (s, T) =>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   408
        (Sign.base_name s, T --> HOLogic.natT, NoSyn))
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   409
          (size_names ~~ drop (length (hd descr), recTs)))) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   410
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   411
      (** constructors **)
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   412
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   413
      parent_path flat_names |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   414
      curry (foldr (fn (((((_, (_, _, constrs)), T), tname),
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   415
        constr_syntax'), thy') => thy' |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   416
          add_path flat_names tname |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   417
            Theory.add_consts_i (map (fn ((_, cargs), (cname, mx)) =>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   418
              (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   419
                (constrs ~~ constr_syntax')) |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   420
          parent_path flat_names))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   421
            (hd descr ~~ newTs ~~ new_type_names ~~ constr_syntax);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   422
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   423
    (**** introduction of axioms ****)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   424
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   425
    val rec_axs = DatatypeProp.make_primrecs new_type_names descr sorts thy2;
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   426
    val size_axs = if no_size then [] else DatatypeProp.make_size new_type_names descr sorts thy2;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   427
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   428
    val (thy3, inject) = thy2 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   429
      Theory.add_path (space_implode "_" new_type_names) |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   430
      PureThy.add_axioms_i [(("induct", DatatypeProp.make_ind descr sorts), [])] |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   431
      PureThy.add_axiomss_i [(("recs", rec_axs), [])] |>
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   432
      (if no_size then I else PureThy.add_axiomss_i [(("size", size_axs), [])]) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   433
      Theory.parent_path |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   434
      add_and_get_axiomss "inject" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   435
        (DatatypeProp.make_injs descr sorts);
7904
2b551893583e proper handling of axioms / defs;
wenzelm
parents: 7847
diff changeset
   436
    val induct = get_thm thy3 "induct";
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   437
    val rec_thms = get_thms thy3 "recs";
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   438
    val size_thms = if no_size then [] else get_thms thy3 "size";
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   439
    val (thy4, distinct) = add_and_get_axiomss "distinct" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   440
      (DatatypeProp.make_distincts new_type_names descr sorts thy3) thy3;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   441
    val (thy5, exhaustion) = add_and_get_axioms "exhaust" new_type_names
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   442
      (DatatypeProp.make_casedists descr sorts) thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   443
    val (thy6, case_thms) = add_and_get_axiomss "cases" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   444
      (DatatypeProp.make_cases new_type_names descr sorts thy5) thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   445
    val (split_ts, split_asm_ts) = ListPair.unzip
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   446
      (DatatypeProp.make_splits new_type_names descr sorts thy6);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   447
    val (thy7, split) = add_and_get_axioms "split" new_type_names split_ts thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   448
    val (thy8, split_asm) = add_and_get_axioms "split_asm" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   449
      split_asm_ts thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   450
    val (thy9, nchotomys) = add_and_get_axioms "nchotomy" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   451
      (DatatypeProp.make_nchotomys descr sorts) thy8;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   452
    val (thy10, case_congs) = add_and_get_axioms "case_cong" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   453
      (DatatypeProp.make_case_congs new_type_names descr sorts thy9) thy9;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   454
    
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   455
    val dt_infos = map (make_dt_info descr' induct reccomb_names' rec_thms)
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   456
      ((0 upto length (hd descr) - 1) ~~ (hd descr) ~~ case_names' ~~ case_thms ~~
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   457
        exhaustion ~~ replicate (length (hd descr)) QuickAndDirty ~~ inject ~~
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   458
          nchotomys ~~ case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   459
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   460
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   461
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   462
    val thy11 = thy10 |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   463
      Theory.add_path (space_implode "_" new_type_names) |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   464
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   465
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   466
      Theory.parent_path;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   467
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   468
    val _ = store_clasimp thy11 ((claset_of thy11, simpset_of thy11)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   469
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   470
      addIffs flat (inject @ distinct));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   471
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   472
  in
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   473
    (thy11,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   474
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   475
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   476
      exhaustion = exhaustion,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   477
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   478
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   479
      split_thms = split ~~ split_asm,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   480
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   481
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   482
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   483
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   484
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   485
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   486
(******************* definitional introduction of datatypes *******************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   487
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   488
fun add_datatype_def flat_names new_type_names descr sorts types_syntax constr_syntax dt_info thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   489
  let
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   490
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   491
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   492
    val (thy2, inject, distinct, dist_rewrites, simproc_dists, induct) = thy |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   493
      DatatypeRepProofs.representation_proofs flat_names dt_info new_type_names descr sorts
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   494
        types_syntax constr_syntax;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   495
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   496
    val (thy3, casedist_thms) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   497
      DatatypeAbsProofs.prove_casedist_thms new_type_names descr sorts induct thy2;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   498
    val (thy4, reccomb_names, rec_thms) = DatatypeAbsProofs.prove_primrec_thms
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   499
      flat_names new_type_names descr sorts dt_info inject dist_rewrites dist_ss induct thy3;
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   500
    val (thy6, case_names, case_thms) = DatatypeAbsProofs.prove_case_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   501
      flat_names new_type_names descr sorts reccomb_names rec_thms thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   502
    val (thy7, split_thms) = DatatypeAbsProofs.prove_split_thms new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   503
      descr sorts inject dist_rewrites casedist_thms case_thms thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   504
    val (thy8, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   505
      descr sorts casedist_thms thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   506
    val (thy9, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   507
      descr sorts nchotomys case_thms thy8;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   508
    val (thy10, size_thms) = DatatypeAbsProofs.prove_size_thms flat_names new_type_names
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   509
      descr sorts reccomb_names rec_thms thy9;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   510
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   511
    val dt_infos = map (make_dt_info (flat descr) induct reccomb_names rec_thms)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   512
      ((0 upto length (hd descr) - 1) ~~ (hd descr) ~~ case_names ~~ case_thms ~~
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   513
        casedist_thms ~~ simproc_dists ~~ inject ~~ nchotomys ~~ case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   514
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   515
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   516
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   517
    val thy11 = thy10 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   518
      Theory.add_path (space_implode "_" new_type_names) |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   519
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   520
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
5663
aad79a127628 Fixed bug (improper handling of flag flat_names).
berghofe
parents: 5661
diff changeset
   521
      Theory.parent_path;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   522
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   523
    val _ = store_clasimp thy11 ((claset_of thy11, simpset_of thy11)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   524
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   525
      addIffs flat (inject @ distinct));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   526
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   527
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   528
    (thy11,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   529
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   530
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   531
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   532
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   533
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   534
      split_thms = split_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   535
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   536
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   537
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   538
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   539
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   540
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   541
(*********************** declare existing type as datatype *********************)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   542
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   543
fun gen_rep_datatype apply_theorems alt_names raw_distinct raw_inject raw_induction thy0 =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   544
  let
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   545
    fun app_thmss srcs thy = foldl_map (fn (thy, x) => apply_theorems x thy) (thy, srcs);
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   546
    fun app_thm src thy = apsnd Library.hd (apply_theorems [src] thy);
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   547
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   548
    val (((thy1, induction), inject), distinct) = thy0
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   549
      |> app_thmss raw_distinct
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   550
      |> apfst (app_thmss raw_inject)
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   551
      |> apfst (apfst (app_thm raw_induction));
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   552
    val sign = Theory.sign_of thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   553
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   554
    val induction' = freezeT induction;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   555
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   556
    fun err t = error ("Ill-formed predicate in induction rule: " ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   557
      Sign.string_of_term sign t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   558
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   559
    fun get_typ (t as _ $ Var (_, Type (tname, Ts))) =
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   560
          ((tname, map dest_TFree Ts) handle TERM _ => err t)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   561
      | get_typ t = err t;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   562
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   563
    val dtnames = map get_typ (dest_conj (HOLogic.dest_Trueprop (concl_of induction')));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   564
    val new_type_names = if_none alt_names (map fst dtnames);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   565
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   566
    fun get_constr t = (case Logic.strip_assums_concl t of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   567
        _ $ (_ $ t') => (case head_of t' of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   568
            Const (cname, cT) => (case strip_type cT of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   569
                (Ts, Type (tname, _)) => (tname, (cname, map (dtyp_of_typ dtnames) Ts))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   570
              | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   571
          | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   572
      | _ => err t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   573
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   574
    fun make_dt_spec [] _ _ = []
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   575
      | make_dt_spec ((tname, tvs)::dtnames') i constrs =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   576
          let val (constrs', constrs'') = take_prefix (equal tname o fst) constrs
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   577
          in (i, (tname, map DtTFree tvs, map snd constrs'))::
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   578
            (make_dt_spec dtnames' (i + 1) constrs'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   579
          end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   580
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   581
    val descr = make_dt_spec dtnames 0 (map get_constr (prems_of induction'));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   582
    val sorts = add_term_tfrees (concl_of induction', []);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   583
    val dt_info = get_datatypes thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   584
6427
fd36b2e7d80e tuned messages;
wenzelm
parents: 6423
diff changeset
   585
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   586
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   587
    val (thy2, casedist_thms) = thy1 |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   588
      DatatypeAbsProofs.prove_casedist_thms new_type_names [descr] sorts induction;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   589
    val (thy3, reccomb_names, rec_thms) = DatatypeAbsProofs.prove_primrec_thms
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   590
      false new_type_names [descr] sorts dt_info inject distinct dist_ss induction thy2;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   591
    val (thy4, case_names, case_thms) = DatatypeAbsProofs.prove_case_thms false
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   592
      new_type_names [descr] sorts reccomb_names rec_thms thy3;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   593
    val (thy5, split_thms) = DatatypeAbsProofs.prove_split_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   594
      new_type_names [descr] sorts inject distinct casedist_thms case_thms thy4;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   595
    val (thy6, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   596
      [descr] sorts casedist_thms thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   597
    val (thy7, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   598
      [descr] sorts nchotomys case_thms thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   599
    val (thy8, size_thms) =
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   600
      if exists (equal "Arith") (Sign.stamp_names_of (Theory.sign_of thy7)) then
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   601
        DatatypeAbsProofs.prove_size_thms false new_type_names
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   602
          [descr] sorts reccomb_names rec_thms thy7
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   603
      else (thy7, []);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   604
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   605
    val dt_infos = map (make_dt_info descr induction reccomb_names rec_thms)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   606
      ((0 upto length descr - 1) ~~ descr ~~ case_names ~~ case_thms ~~
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   607
        casedist_thms ~~ map FewConstrs distinct ~~ inject ~~ nchotomys ~~ case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   608
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   609
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   610
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   611
    val thy9 = thy8 |>
7743
64662aa3c173 rep_datatype now stores theorems properly.
berghofe
parents: 7151
diff changeset
   612
      store_thmss "inject" new_type_names inject |>
64662aa3c173 rep_datatype now stores theorems properly.
berghofe
parents: 7151
diff changeset
   613
      store_thmss "distinct" new_type_names distinct |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   614
      Theory.add_path (space_implode "_" new_type_names) |>
7743
64662aa3c173 rep_datatype now stores theorems properly.
berghofe
parents: 7151
diff changeset
   615
      PureThy.add_thms [(("induct", induction), [])] |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   616
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   617
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   618
      Theory.parent_path;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   619
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   620
    val _ = store_clasimp thy9 ((claset_of thy9, simpset_of thy9)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   621
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   622
      addIffs flat (inject @ distinct));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   623
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   624
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   625
    (thy9,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   626
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   627
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   628
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   629
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   630
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   631
      split_thms = split_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   632
      induction = induction,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   633
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   634
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   635
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   636
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   637
val rep_datatype = gen_rep_datatype IsarThy.apply_theorems;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   638
val rep_datatype_i = gen_rep_datatype IsarThy.apply_theorems_i;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   639
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   640
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   641
(******************************** add datatype ********************************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   642
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   643
fun gen_add_datatype prep_typ flat_names new_type_names dts thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   644
  let
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   645
    val _ = Theory.requires thy "Datatype" "datatype definitions";
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   646
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   647
    (* this theory is used just for parsing *)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   648
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   649
    val tmp_thy = thy |>
5892
e5e44cc54eb2 Attribute.tthms_of;
wenzelm
parents: 5720
diff changeset
   650
      Theory.copy |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   651
      Theory.add_types (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   652
        (tname, length tvs, mx)) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   653
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   654
    val sign = Theory.sign_of tmp_thy;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   655
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   656
    val (tyvars, _, _, _)::_ = dts;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   657
    val (new_dts, types_syntax) = ListPair.unzip (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   658
      let val full_tname = Sign.full_name sign (Syntax.type_name tname mx)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   659
      in (case duplicates tvs of
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   660
            [] => if eq_set (tyvars, tvs) then ((full_tname, tvs), (tname, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   661
                  else error ("Mutually recursive datatypes must have same type parameters")
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   662
          | dups => error ("Duplicate parameter(s) for datatype " ^ full_tname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   663
              " : " ^ commas dups))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   664
      end) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   665
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   666
    val _ = (case duplicates (map fst new_dts) @ duplicates new_type_names of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   667
      [] => () | dups => error ("Duplicate datatypes: " ^ commas dups));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   668
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   669
    fun prep_dt_spec ((dts', constr_syntax, sorts, i), (tvs, tname, mx, constrs)) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   670
      let
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   671
        fun prep_constr ((constrs, constr_syntax', sorts'), (cname, cargs, mx')) =
5279
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   672
          let
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   673
            val (cargs', sorts'') = foldl (prep_typ sign) (([], sorts'), cargs);
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   674
            val _ = (case foldr add_typ_tfree_names (cargs', []) \\ tvs of
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   675
                [] => ()
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   676
              | vs => error ("Extra type variables on rhs: " ^ commas vs))
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   677
          in (constrs @ [((if flat_names then Sign.full_name sign else
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   678
                Sign.full_name_path sign tname) (Syntax.const_name cname mx'),
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   679
                   map (dtyp_of_typ new_dts) cargs')],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   680
              constr_syntax' @ [(cname, mx')], sorts'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   681
          end handle ERROR =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   682
            error ("The error above occured in constructor " ^ cname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   683
              " of datatype " ^ tname);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   684
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   685
        val (constrs', constr_syntax', sorts') =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   686
          foldl prep_constr (([], [], sorts), constrs)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   687
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   688
      in 
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   689
        case duplicates (map fst constrs') of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   690
           [] =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   691
             (dts' @ [(i, (Sign.full_name sign (Syntax.type_name tname mx),
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   692
                map DtTFree tvs, constrs'))],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   693
              constr_syntax @ [constr_syntax'], sorts', i + 1)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   694
         | dups => error ("Duplicate constructors " ^ commas dups ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   695
             " in datatype " ^ tname)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   696
      end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   697
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   698
    val (dts', constr_syntax, sorts', i) = foldl prep_dt_spec (([], [], [], 0), dts);
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   699
    val sorts = sorts' @ (map (rpair (Sign.defaultS sign)) (tyvars \\ map fst sorts'));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   700
    val dt_info = get_datatypes thy;
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   701
    val (descr, _) = unfold_datatypes sign dts' sorts dt_info dts' i;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   702
    val _ = check_nonempty descr;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   703
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   704
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   705
    (if (!quick_and_dirty) then add_datatype_axm else add_datatype_def)
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   706
      flat_names new_type_names descr sorts types_syntax constr_syntax dt_info thy
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   707
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   708
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   709
val add_datatype_i = gen_add_datatype cert_typ;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   710
val add_datatype = gen_add_datatype read_typ;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   711
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   712
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   713
(** package setup **)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   714
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   715
(* setup theory *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   716
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   717
val setup = [DatatypesData.init] @ simproc_setup;
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   718
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   719
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   720
(* outer syntax *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   721
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   722
local structure P = OuterParse and K = OuterSyntax.Keyword in
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   723
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   724
val datatype_decl =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   725
  Scan.option (P.$$$ "(" |-- P.name --| P.$$$ ")") -- P.type_args -- P.name -- P.opt_infix --
6729
b6e167580a32 formal comments (still dummy);
wenzelm
parents: 6723
diff changeset
   726
    (P.$$$ "=" |-- P.enum1 "|" (P.name -- Scan.repeat P.typ -- P.opt_mixfix --| P.marg_comment));
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   727
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   728
fun mk_datatype args =
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   729
  let
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   730
    val names = map (fn ((((None, _), t), _), _) => t | ((((Some t, _), _), _), _) => t) args;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   731
    val specs = map (fn ((((_, vs), t), mx), cons) => (vs, t, mx, map (fn ((x, y), z) => (x, y, z)) cons)) args;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   732
  in #1 o add_datatype false names specs end;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   733
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   734
val datatypeP =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   735
  OuterSyntax.command "datatype" "define inductive datatypes" K.thy_decl
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   736
    (P.and_list1 datatype_decl >> (Toplevel.theory o mk_datatype));
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   737
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   738
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   739
val rep_datatype_decl =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   740
  Scan.option (Scan.repeat1 P.name) --
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   741
    Scan.optional (P.$$$ "distinct" |-- P.!!! (P.and_list1 P.xthms1)) [] --
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   742
    Scan.optional (P.$$$ "inject" |-- P.!!! (P.and_list1 P.xthms1)) [] --
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   743
    (P.$$$ "induction" |-- P.!!! P.xthm);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   744
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   745
fun mk_rep_datatype (((opt_ts, dss), iss), ind) = #1 o rep_datatype opt_ts dss iss ind;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   746
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   747
val rep_datatypeP =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   748
  OuterSyntax.command "rep_datatype" "represent existing types inductively" K.thy_decl
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   749
    (rep_datatype_decl >> (Toplevel.theory o mk_rep_datatype));
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   750
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   751
6479
b0448cab1b1e rep_datatype syntax: 'induction' instead of 'induct';
wenzelm
parents: 6441
diff changeset
   752
val _ = OuterSyntax.add_keywords ["distinct", "inject", "induction"];
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   753
val _ = OuterSyntax.add_parsers [datatypeP, rep_datatypeP];
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   754
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   755
end;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   756
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   757
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   758
end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   759
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   760
structure BasicDatatypePackage: BASIC_DATATYPE_PACKAGE = DatatypePackage;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   761
open BasicDatatypePackage;