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 mutual_induct_tac : string list -> int -> tactic
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  val induct_tac : string -> int -> tactic
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  val exhaust_tac : string -> int -> tactic
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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
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  val datatype_info : theory -> string -> DatatypeAux.datatype_info
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  val constrs_of : theory -> 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 (Sign.cond_extern sg Sign.typeK o fst) (Symtab.dest 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 =
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  (case Symtab.lookup (get_datatypes_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 constrs_of thy tname =
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  let
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    val {index, descr, ...} = datatype_info thy tname;
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    val (_, _, constrs) = the (assoc (descr, index))
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  in
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    Some (map (fn (cname, _) =>
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      Const (cname, the (Sign.const_type (Theory.sign_of thy) cname))) constrs)
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  end handle _ => None;
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fun case_const_of thy tname =
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  let
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    val {case_name, ...} = datatype_info thy tname;
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  in
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    Some (Const (case_name, the (Sign.const_type (Theory.sign_of thy) case_name)))
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  end handle _ => 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
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                                  (aterm, TVar (("", 0), []));
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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 mutual_induct_tac vars i state =
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  let
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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 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 _ =>
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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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fun induct_tac var = mutual_induct_tac [var];
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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 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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(* 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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infix 4 addDistinct;
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fun clasimp addDistinct ([], _) = clasimp
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  | clasimp addDistinct (thms::thmss, (_, (_, _, constrs))::descr) =
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      if length constrs < DatatypeProp.dtK then
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        clasimp addIffs thms addDistinct (thmss, descr)
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      else
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        clasimp addsimps2 thms addDistinct (thmss, descr);
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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 = get_axiom 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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  let
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    val descr' = flat descr;
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    val recTs = get_rec_types descr' sorts;
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    val used = foldr add_typ_tfree_names (recTs, []);
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    val newTs = take (length (hd descr), recTs);
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    val _ = message ("Adding axioms for datatype(s) " ^ commas_quote new_type_names);
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    (**** declare new types and constants ****)
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    val tyvars = map (fn (_, (_, Ts, _)) => map dest_DtTFree Ts) (hd descr);
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    val constr_decls = map (fn (((_, (_, _, constrs)), T), constr_syntax') =>
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      map (fn ((_, cargs), (cname, mx)) =>
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        (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
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          (constrs ~~ constr_syntax')) ((hd descr) ~~ newTs ~~ constr_syntax);
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    val rec_result_Ts = map TFree (variantlist (replicate (length descr') "'t", used) ~~
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      replicate (length descr') HOLogic.termS);
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    val reccomb_fn_Ts = flat (map (fn (i, (_, _, constrs)) =>
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      map (fn (_, cargs) =>
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        let
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          val recs = filter is_rec_type cargs;
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          val argTs = (map (typ_of_dtyp descr' sorts) cargs) @
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            (map (fn r => nth_elem (dest_DtRec r, rec_result_Ts)) recs)
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        in argTs ---> nth_elem (i, rec_result_Ts)
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        end) constrs) descr');
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    val big_reccomb_name = (space_implode "_" new_type_names) ^ "_rec";
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    val reccomb_names = if length descr' = 1 then [big_reccomb_name] else
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      (map ((curry (op ^) (big_reccomb_name ^ "_")) o string_of_int)
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        (1 upto (length descr')));
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    val big_size_name = space_implode "_" new_type_names ^ "_size";
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    val size_names = if length (flat (tl descr)) = 1 then [big_size_name] else
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      map (fn i => big_size_name ^ "_" ^ string_of_int i)
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        (1 upto length (flat (tl descr)));
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    val freeT = TFree (variant used "'t", HOLogic.termS);
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    val case_fn_Ts = map (fn (i, (_, _, constrs)) =>
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      map (fn (_, cargs) =>
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        let val Ts = map (typ_of_dtyp descr' sorts) cargs
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        in Ts ---> freeT end) constrs) (hd descr);
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    val case_names = map (fn s => (s ^ "_case")) new_type_names;
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    val thy2' = thy |>
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      (** new types **)
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      curry (foldr (fn (((name, mx), tvs), thy') => thy' |>
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          TypedefPackage.add_typedecls [(name, tvs, mx)]))
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        (types_syntax ~~ tyvars) |>
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      add_path flat_names (space_implode "_" new_type_names) |>
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      (** primrec combinators **)
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      Theory.add_consts_i (map (fn ((name, T), T') =>
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        (name, reccomb_fn_Ts @ [T] ---> T', NoSyn))
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          (reccomb_names ~~ recTs ~~ rec_result_Ts)) |>
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      (** case combinators **)
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parents:
diff changeset
   336
      Theory.add_consts_i (map (fn ((name, T), Ts) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   337
        (name, Ts @ [T] ---> freeT, NoSyn))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   338
          (case_names ~~ newTs ~~ case_fn_Ts)) |>
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   339
      Theory.add_trrules_i (DatatypeProp.make_case_trrules new_type_names descr);
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   340
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   341
    val reccomb_names' = map (Sign.intern_const (Theory.sign_of thy2')) reccomb_names;
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   342
    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
   343
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   344
    val thy2 = thy2' |>
5177
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   345
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   346
      (** t_ord functions **)
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   347
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   348
      Theory.add_consts_i
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   349
        (foldr (fn ((((_, (_, _, constrs)), tname), T), decls) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   350
          if length constrs < DatatypeProp.dtK then decls
0d3a168e4d44 New datatype definition package
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parents:
diff changeset
   351
          else (tname ^ "_ord", T --> HOLogic.natT, NoSyn)::decls)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   352
            ((hd descr) ~~ new_type_names ~~ newTs, [])) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   353
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   354
      (** size functions **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   355
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   356
      Theory.add_consts_i (map (fn (s, T) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   357
        (Sign.base_name s, T --> HOLogic.natT, NoSyn))
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   358
          (size_names ~~ drop (length (hd descr), recTs))) |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   359
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   360
      (** constructors **)
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   361
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   362
      parent_path flat_names |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   363
      curry (foldr (fn (((((_, (_, _, constrs)), T), tname),
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   364
        constr_syntax'), thy') => thy' |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   365
          add_path flat_names tname |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   366
            Theory.add_consts_i (map (fn ((_, cargs), (cname, mx)) =>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   367
              (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   368
                (constrs ~~ constr_syntax')) |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   369
          parent_path flat_names))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   370
            (hd descr ~~ newTs ~~ new_type_names ~~ constr_syntax);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   371
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   372
    (**** introduction of axioms ****)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   373
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   374
    val rec_axs = DatatypeProp.make_primrecs new_type_names descr sorts thy2;
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   375
    val size_axs = DatatypeProp.make_size new_type_names descr sorts thy2;
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   376
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   377
    val (thy3, inject) = thy2 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   378
      Theory.add_path (space_implode "_" new_type_names) |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   379
      PureThy.add_axioms_i [(("induct", DatatypeProp.make_ind descr sorts), [])] |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   380
      PureThy.add_axiomss_i [(("recs", rec_axs), [])] |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   381
      PureThy.add_axiomss_i [(("size", size_axs), [])] |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   382
      Theory.parent_path |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   383
      add_and_get_axiomss "inject" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   384
        (DatatypeProp.make_injs descr sorts);
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   385
    val induct = get_axiom thy3 "induct";
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   386
    val rec_thms = get_thms thy3 "recs";
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   387
    val size_thms = get_thms thy3 "size";
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   388
    val (thy4, distinct) = add_and_get_axiomss "distinct" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   389
      (DatatypeProp.make_distincts new_type_names descr sorts thy3) thy3;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   390
    val (thy5, exhaustion) = add_and_get_axioms "exhaust" new_type_names
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   391
      (DatatypeProp.make_casedists descr sorts) thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   392
    val (thy6, case_thms) = add_and_get_axiomss "cases" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   393
      (DatatypeProp.make_cases new_type_names descr sorts thy5) thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   394
    val (split_ts, split_asm_ts) = ListPair.unzip
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   395
      (DatatypeProp.make_splits new_type_names descr sorts thy6);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   396
    val (thy7, split) = add_and_get_axioms "split" new_type_names split_ts thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   397
    val (thy8, split_asm) = add_and_get_axioms "split_asm" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   398
      split_asm_ts thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   399
    val (thy9, nchotomys) = add_and_get_axioms "nchotomy" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   400
      (DatatypeProp.make_nchotomys descr sorts) thy8;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   401
    val (thy10, case_congs) = add_and_get_axioms "case_cong" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   402
      (DatatypeProp.make_case_congs new_type_names descr sorts thy9) thy9;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   403
    
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   404
    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
   405
      ((0 upto length (hd descr) - 1) ~~ (hd descr) ~~ case_names' ~~ case_thms ~~
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   406
        exhaustion ~~ distinct ~~ inject ~~ nchotomys ~~ case_congs);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   407
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   408
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   409
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   410
    val thy11 = thy10 |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   411
      Theory.add_path (space_implode "_" new_type_names) |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   412
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   413
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   414
      Theory.parent_path;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   415
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   416
    val _ = store_clasimp thy11 ((claset_of thy11, simpset_of thy11)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   417
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   418
      addIffs flat inject addDistinct (distinct, hd descr));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   419
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   420
  in
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   421
    (thy11,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   422
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   423
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   424
      exhaustion = exhaustion,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   425
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   426
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   427
      split_thms = split ~~ split_asm,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   428
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   429
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   430
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   431
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   432
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   433
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   434
(******************* definitional introduction of datatypes *******************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   435
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   436
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
   437
  let
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   438
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   439
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   440
    val (thy2, inject, dist_rewrites, induct) = thy |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   441
      DatatypeRepProofs.representation_proofs flat_names dt_info new_type_names descr sorts
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   442
        types_syntax constr_syntax;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   443
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   444
    val (thy3, casedist_thms) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   445
      DatatypeAbsProofs.prove_casedist_thms new_type_names descr sorts induct thy2;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   446
    val (thy4, reccomb_names, rec_thms) = DatatypeAbsProofs.prove_primrec_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   447
      flat_names new_type_names descr sorts dt_info inject dist_rewrites induct thy3;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   448
    val (thy5, case_names, case_thms) = DatatypeAbsProofs.prove_case_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   449
      flat_names new_type_names descr sorts reccomb_names rec_thms thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   450
    val (thy6, distinct) = DatatypeAbsProofs.prove_distinctness_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   451
      flat_names new_type_names descr sorts dist_rewrites case_thms thy5;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   452
    val (thy7, split_thms) = DatatypeAbsProofs.prove_split_thms new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   453
      descr sorts inject dist_rewrites casedist_thms case_thms thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   454
    val (thy8, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   455
      descr sorts casedist_thms thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   456
    val (thy9, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   457
      descr sorts nchotomys case_thms thy8;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   458
    val (thy10, size_thms) = DatatypeAbsProofs.prove_size_thms flat_names new_type_names
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   459
      descr sorts reccomb_names rec_thms thy9;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   460
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   461
    val dt_infos = map (make_dt_info (flat descr) induct reccomb_names rec_thms)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   462
      ((0 upto length (hd descr) - 1) ~~ (hd descr) ~~ case_names ~~ case_thms ~~
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   463
        casedist_thms ~~ distinct ~~ inject ~~ nchotomys ~~ case_congs);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   464
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   465
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   466
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   467
    val thy11 = thy10 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   468
      Theory.add_path (space_implode "_" new_type_names) |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   469
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   470
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
5663
aad79a127628 Fixed bug (improper handling of flag flat_names).
berghofe
parents: 5661
diff changeset
   471
      Theory.parent_path;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   472
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   473
    val _ = store_clasimp thy11 ((claset_of thy11, simpset_of thy11)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   474
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   475
      addIffs flat inject addDistinct (distinct, hd descr));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   476
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   477
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   478
    (thy11,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   479
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   480
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   481
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   482
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   483
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   484
      split_thms = split_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   485
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   486
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   487
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   488
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   489
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   490
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   491
(*********************** declare existing type as datatype *********************)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   492
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   493
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
   494
  let
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   495
    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
   496
    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
   497
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   498
    val (((thy1, induction), inject), distinct) = thy0
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   499
      |> app_thmss raw_distinct
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   500
      |> apfst (app_thmss raw_inject)
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   501
      |> apfst (apfst (app_thm raw_induction));
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   502
    val sign = Theory.sign_of thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   503
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   504
    val induction' = freezeT induction;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   505
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   506
    fun err t = error ("Ill-formed predicate in induction rule: " ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   507
      Sign.string_of_term sign t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   508
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   509
    fun get_typ (t as _ $ Var (_, Type (tname, Ts))) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   510
          ((tname, map dest_TFree Ts) handle _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   511
      | get_typ t = err t;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   512
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   513
    val dtnames = map get_typ (dest_conj (HOLogic.dest_Trueprop (concl_of induction')));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   514
    val new_type_names = if_none alt_names (map fst dtnames);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   515
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   516
    fun get_constr t = (case Logic.strip_assums_concl t of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   517
        _ $ (_ $ t') => (case head_of t' of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   518
            Const (cname, cT) => (case strip_type cT of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   519
                (Ts, Type (tname, _)) => (tname, (cname, map (dtyp_of_typ dtnames) Ts))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   520
              | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   521
          | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   522
      | _ => err t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   523
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   524
    fun make_dt_spec [] _ _ = []
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   525
      | make_dt_spec ((tname, tvs)::dtnames') i constrs =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   526
          let val (constrs', constrs'') = take_prefix (equal tname o fst) constrs
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   527
          in (i, (tname, map DtTFree tvs, map snd constrs'))::
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   528
            (make_dt_spec dtnames' (i + 1) constrs'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   529
          end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   530
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   531
    val descr = make_dt_spec dtnames 0 (map get_constr (prems_of induction'));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   532
    val sorts = add_term_tfrees (concl_of induction', []);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   533
    val dt_info = get_datatypes thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   534
6427
fd36b2e7d80e tuned messages;
wenzelm
parents: 6423
diff changeset
   535
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   536
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   537
    val (thy2, casedist_thms) = thy1 |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   538
      DatatypeAbsProofs.prove_casedist_thms new_type_names [descr] sorts induction;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   539
    val (thy3, reccomb_names, rec_thms) = DatatypeAbsProofs.prove_primrec_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   540
      false new_type_names [descr] sorts dt_info inject distinct induction thy2;
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   541
    val (thy4, case_names, case_thms) = DatatypeAbsProofs.prove_case_thms false
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   542
      new_type_names [descr] sorts reccomb_names rec_thms thy3;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   543
    val (thy5, split_thms) = DatatypeAbsProofs.prove_split_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   544
      new_type_names [descr] sorts inject distinct casedist_thms case_thms thy4;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   545
    val (thy6, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   546
      [descr] sorts casedist_thms thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   547
    val (thy7, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   548
      [descr] sorts nchotomys case_thms thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   549
    val (thy8, size_thms) =
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   550
      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
   551
        DatatypeAbsProofs.prove_size_thms false new_type_names
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   552
          [descr] sorts reccomb_names rec_thms thy7
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   553
      else (thy7, []);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   554
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   555
    val dt_infos = map (make_dt_info descr induction reccomb_names rec_thms)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   556
      ((0 upto length descr - 1) ~~ descr ~~ case_names ~~ case_thms ~~
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   557
        casedist_thms ~~ distinct ~~ inject ~~ nchotomys ~~ case_congs);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   558
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   559
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   560
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   561
    val thy9 = thy8 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   562
      Theory.add_path (space_implode "_" new_type_names) |>
6092
d9db67970c73 eliminated tthm type and Attribute structure;
wenzelm
parents: 5892
diff changeset
   563
      PureThy.add_thmss [(("simps", simps), [])] |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   564
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   565
      Theory.parent_path;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   566
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   567
    val _ = store_clasimp thy9 ((claset_of thy9, simpset_of thy9)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   568
      addsimps2 flat case_thms addsimps2 size_thms addsimps2 rec_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   569
      addIffs flat inject addDistinct (distinct, descr));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   570
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   571
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   572
    (thy9,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   573
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   574
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   575
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   576
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   577
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   578
      split_thms = split_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   579
      induction = induction,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   580
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   581
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   582
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   583
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   584
val rep_datatype = gen_rep_datatype IsarThy.apply_theorems;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   585
val rep_datatype_i = gen_rep_datatype IsarThy.apply_theorems_i;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   586
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   587
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   588
(******************************** add datatype ********************************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   589
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   590
fun gen_add_datatype prep_typ flat_names new_type_names dts thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   591
  let
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   592
    val _ = Theory.requires thy "Datatype" "datatype definitions";
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   593
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   594
    (* this theory is used just for parsing *)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   595
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   596
    val tmp_thy = thy |>
5892
e5e44cc54eb2 Attribute.tthms_of;
wenzelm
parents: 5720
diff changeset
   597
      Theory.copy |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   598
      Theory.add_types (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   599
        (tname, length tvs, mx)) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   600
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   601
    val sign = Theory.sign_of tmp_thy;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   602
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   603
    val (tyvars, _, _, _)::_ = dts;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   604
    val (new_dts, types_syntax) = ListPair.unzip (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   605
      let val full_tname = Sign.full_name sign (Syntax.type_name tname mx)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   606
      in (case duplicates tvs of
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   607
            [] => if eq_set (tyvars, tvs) then ((full_tname, tvs), (tname, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   608
                  else error ("Mutually recursive datatypes must have same type parameters")
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   609
          | dups => error ("Duplicate parameter(s) for datatype " ^ full_tname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   610
              " : " ^ commas dups))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   611
      end) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   612
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   613
    val _ = (case duplicates (map fst new_dts) @ duplicates new_type_names of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   614
      [] => () | dups => error ("Duplicate datatypes: " ^ commas dups));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   615
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   616
    fun prep_dt_spec ((dts', constr_syntax, sorts, i), (tvs, tname, mx, constrs)) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   617
      let
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   618
        fun prep_constr ((constrs, constr_syntax', sorts'), (cname, cargs, mx')) =
5279
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   619
          let
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   620
            val (cargs', sorts'') = foldl (prep_typ sign) (([], sorts'), cargs);
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   621
            val _ = (case foldr add_typ_tfree_names (cargs', []) \\ tvs of
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   622
                [] => ()
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   623
              | vs => error ("Extra type variables on rhs: " ^ commas vs))
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   624
          in (constrs @ [((if flat_names then Sign.full_name sign else
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   625
                Sign.full_name_path sign tname) (Syntax.const_name cname mx'),
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   626
                   map (dtyp_of_typ new_dts) cargs')],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   627
              constr_syntax' @ [(cname, mx')], sorts'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   628
          end handle ERROR =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   629
            error ("The error above occured in constructor " ^ cname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   630
              " of datatype " ^ tname);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   631
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   632
        val (constrs', constr_syntax', sorts') =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   633
          foldl prep_constr (([], [], sorts), constrs)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   634
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   635
      in 
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   636
        case duplicates (map fst constrs') of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   637
           [] =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   638
             (dts' @ [(i, (Sign.full_name sign (Syntax.type_name tname mx),
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   639
                map DtTFree tvs, constrs'))],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   640
              constr_syntax @ [constr_syntax'], sorts', i + 1)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   641
         | dups => error ("Duplicate constructors " ^ commas dups ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   642
             " in datatype " ^ tname)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   643
      end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   644
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   645
    val (dts', constr_syntax, sorts', i) = foldl prep_dt_spec (([], [], [], 0), dts);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   646
    val dt_info = get_datatypes thy;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   647
    val (descr, _) = unfold_datatypes dt_info dts' i;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   648
    val _ = check_nonempty descr;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   649
    val sorts = sorts' @ (map (rpair (Sign.defaultS sign)) (tyvars \\ map fst sorts'));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   650
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   651
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   652
    (if (!quick_and_dirty) then add_datatype_axm else add_datatype_def)
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   653
      flat_names new_type_names descr sorts types_syntax constr_syntax dt_info thy
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   654
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   655
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   656
val add_datatype_i = gen_add_datatype cert_typ;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   657
val add_datatype = gen_add_datatype read_typ;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   658
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   659
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   660
(** package setup **)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   661
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   662
(* setup theory *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   663
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   664
val setup = [DatatypesData.init];
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   665
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   666
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   667
(* outer syntax *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   668
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   669
local open OuterParse in
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   670
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   671
val datatype_decl =
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   672
  Scan.option ($$$ "(" |-- name --| $$$ ")") -- type_args -- name -- opt_infix --
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   673
    ($$$ "=" |-- enum1 "|" (name -- Scan.repeat typ -- opt_mixfix));
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   674
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   675
fun mk_datatype args =
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   676
  let
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   677
    val names = map (fn ((((None, _), t), _), _) => t | ((((Some t, _), _), _), _) => t) args;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   678
    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
   679
  in #1 o add_datatype false names specs end;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   680
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   681
val datatypeP =
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   682
  OuterSyntax.command "datatype" "define inductive datatypes"
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   683
    (enum1 "and" datatype_decl >> (Toplevel.theory o mk_datatype));
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   684
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   685
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   686
val rep_datatype_decl =
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   687
  Scan.option (Scan.repeat1 name) --
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   688
    Scan.optional ($$$ "distinct" |-- !!! (and_list1 xthms1)) [] --
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   689
    Scan.optional ($$$ "inject" |-- !!! (and_list1 xthms1)) [] --
6479
b0448cab1b1e rep_datatype syntax: 'induction' instead of 'induct';
wenzelm
parents: 6441
diff changeset
   690
    ($$$ "induction" |-- !!! xthm);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   691
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   692
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
   693
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   694
val rep_datatypeP =
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   695
  OuterSyntax.command "rep_datatype" "represent existing types inductively"
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   696
    (rep_datatype_decl >> (Toplevel.theory o mk_rep_datatype));
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   697
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   698
6479
b0448cab1b1e rep_datatype syntax: 'induction' instead of 'induct';
wenzelm
parents: 6441
diff changeset
   699
val _ = OuterSyntax.add_keywords ["distinct", "inject", "induction"];
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   700
val _ = OuterSyntax.add_parsers [datatypeP, rep_datatypeP];
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   701
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   702
end;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   703
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   704
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   705
end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   706
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   707
structure BasicDatatypePackage: BASIC_DATATYPE_PACKAGE = DatatypePackage;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   708
open BasicDatatypePackage;