src/HOL/Tools/datatype_package.ML
author berghofe
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Added exception Datatype_Empty.
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(*  Title:      HOL/Tools/datatype_package.ML
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    ID:         $Id$
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    Author:     Stefan Berghofer, TU Muenchen
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    License:    GPL (GNU GENERAL PUBLIC LICENSE)
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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 induct_thm_tac : thm -> string -> int -> tactic
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  val case_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 -> 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 list * theory attribute list) list list ->
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    (thm list * theory attribute list) list list -> (thm list * theory attribute list) ->
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    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 get_datatypes_sg : Sign.sg -> 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 weak_case_congs_of : theory -> thm list
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  val weak_case_congs_of_sg : Sign.sg -> thm list
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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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val weak_case_congs_of_sg = map (#weak_case_cong o #2) o Symtab.dest o get_datatypes_sg;
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val weak_case_congs_of = weak_case_congs_of_sg o Theory.sign_of;
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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 = rename_wrt_term Bi (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 i aterm =
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  let
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    val sign = Thm.sign_of_thm state;
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    val (_, _, Bi, _) = Thm.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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local
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fun prep_var (Var (ixn, _), Some x) = Some (implode (tl (explode (Syntax.string_of_vname ixn))), x)
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  | prep_var _ = None;
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fun prep_inst (concl, xs) =	(*exception LIST*)
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  let val vs = InductAttrib.vars_of concl
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  in mapfilter prep_var (Library.drop (length vs - length xs, vs) ~~ xs) end;
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in
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fun gen_induct_tac inst_tac (varss, opt_rule) i state =
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  let
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    val (_, _, Bi, _) = Thm.dest_state (state, i);
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    val {sign, ...} = Thm.rep_thm state;
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    val (rule, rule_name) =
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      (case opt_rule of
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        Some r => (r, "Induction rule")
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      | None =>
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          let val tn = find_tname (hd (mapfilter I (flat varss))) Bi
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          in (#induction (datatype_info_sg_err sign tn), "Induction rule for type " ^ tn) end);
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    val concls = HOLogic.dest_concls (Thm.concl_of rule);
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    val insts = flat (map prep_inst (concls ~~ varss)) handle LIST _ =>
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      error (rule_name ^ " has different numbers of variables");
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  in occs_in_prems (inst_tac insts rule) (map #2 insts) i state end;
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fun induct_tac s =
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  gen_induct_tac Tactic.res_inst_tac
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    (map (Library.single o Some) (Syntax.read_idents s), None);
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fun induct_thm_tac th s =
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  gen_induct_tac Tactic.res_inst_tac
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    ([map Some (Syntax.read_idents s)], Some th);
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end;
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(* generic case tactic for datatypes *)
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fun case_inst_tac inst_tac t rule i state =
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  let
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    val _ $ Var (ixn, _) $ _ = HOLogic.dest_Trueprop
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      (hd (Logic.strip_assums_hyp (hd (Thm.prems_of rule))));
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    val exh_vname = implode (tl (explode (Syntax.string_of_vname ixn)));
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  in inst_tac [(exh_vname, t)] rule i state end;
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fun gen_case_tac inst_tac (t, Some rule) i state =
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      case_inst_tac inst_tac t rule i state
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  | gen_case_tac inst_tac (t, None) i state =
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      let val tn = infer_tname state i t in
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        if tn = HOLogic.boolN then inst_tac [("P", t)] case_split_thm i state
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        else case_inst_tac inst_tac t
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               (#exhaustion (datatype_info_sg_err (Thm.sign_of_thm state) tn))
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               i state
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      end handle THM _ => Seq.empty;
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fun case_tac t = gen_case_tac Tactic.res_inst_tac (t, None);
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(** Isar tactic emulations **)
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local
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val rule_spec = Scan.lift (Args.$$$ "rule" -- Args.$$$ ":");
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val opt_rule = Scan.option (rule_spec |-- Attrib.local_thm);
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val varss = Args.and_list (Scan.repeat (Scan.unless rule_spec (Scan.lift Args.name_dummy)));
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fun mk_ixn (vars, s) = (fst (Term.dest_Var (Syntax.read_var ("?" ^ vars))), s)
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  handle _ => error (vars ^ " not a variable name");
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fun inst_tac ctxt sinsts =
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  Method.bires_inst_tac false ctxt (map mk_ixn sinsts);
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fun induct_meth ctxt (varss, opt_rule) =
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  gen_induct_tac (inst_tac ctxt) (varss, opt_rule);
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fun case_meth ctxt (varss, opt_rule) =
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  gen_case_tac (inst_tac ctxt) (varss, opt_rule);
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in
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val tactic_emulations =
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 [("induct_tac", Method.goal_args_ctxt' (varss -- opt_rule) induct_meth,
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    "induct_tac emulation (dynamic instantiation)"),
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  ("case_tac", Method.goal_args_ctxt' (Scan.lift Args.name -- opt_rule) case_meth,
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    "case_tac emulation (dynamic instantiation)")];
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end;
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b0d2002f9f04 proof methods: 'case_tac' / 'induct_tac';
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(** induct method setup **)
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(* case names *)
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local
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fun dt_recs (DtTFree _) = []
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  | dt_recs (DtType (_, dts)) = flat (map dt_recs dts)
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  | dt_recs (DtRec i) = [i];
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fun dt_cases (descr: descr) (_, args, constrs) =
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  let
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    fun the_bname i = Sign.base_name (#1 (the (assoc (descr, i))));
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    val bnames = map the_bname (distinct (flat (map dt_recs args)));
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  in map (fn (c, _) => space_implode "_" (Sign.base_name c :: bnames)) constrs end;
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fun induct_cases descr =
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  DatatypeProp.indexify_names (flat (map (dt_cases descr) (map #2 descr)));
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fun exhaust_cases descr i = dt_cases descr (the (assoc (descr, i)));
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in
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fun mk_case_names_induct descr = RuleCases.case_names (induct_cases descr);
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fun mk_case_names_exhausts descr new =
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  map (RuleCases.case_names o exhaust_cases descr o #1)
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    (filter (fn ((_, (name, _, _))) => name mem_string new) descr);
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end;
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fun add_rules simps case_thms size_thms rec_thms inject distinct
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                  weak_case_congs cong_att =
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  (#1 o PureThy.add_thmss [(("simps", simps), []),
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    (("", flat case_thms @ size_thms @ 
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          flat distinct  @ rec_thms), [Simplifier.simp_add_global]),
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    (("", size_thms @ rec_thms), [RecfunCodegen.add]),
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    (("", flat inject),               [iff_add_global]),
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    (("", flat distinct RL [notE]),   [Classical.safe_elim_global]),
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    (("", weak_case_congs),           [cong_att])]);
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258281c43dea removed cases_of;
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258281c43dea removed cases_of;
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(* add_cases_induct *)
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fun add_cases_induct infos induction =
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  let
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    val n = length (HOLogic.dest_concls (Thm.concl_of induction));
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    fun proj i thm =
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      if n = 1 then thm
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      else (if i + 1 < n then (fn th => th RS conjunct1) else I)
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        (Library.funpow i (fn th => th RS conjunct2) thm)
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        |> Drule.zero_var_indexes
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        |> RuleCases.save thm;
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    fun named_rules (name, {index, exhaustion, ...}: datatype_info) =
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      [(("", proj index induction), [InductAttrib.induct_type_global name]),
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       (("", exhaustion), [InductAttrib.cases_type_global name])];
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    fun unnamed_rule i =
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      (("", proj i induction), [InductAttrib.induct_type_global ""]);
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    val rules = flat (map named_rules infos) @ map unnamed_rule (length infos upto n - 1);
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  in #1 o PureThy.add_thms rules end;
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5177
0d3a168e4d44 New datatype definition package
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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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   349
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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))
13480
bb72bd43c6c3 use Tactic.prove instead of prove_goalw_cterm in internal proofs!
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                               | FewConstrs thms => Some (Tactic.prove sg [] [] eq_t (K
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                                   (EVERY [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 (Tactic.prove sg [] [] eq_t (K
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                                   (EVERY [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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   379
                        end
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                    | None => None)
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                else None
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          | _ => None)
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   383
   | _ => None)
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   384
  | distinct_proc sg _ _ = None;
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   385
13462
56610e2ba220 sane interface for simprocs;
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   386
val distinct_simproc =
56610e2ba220 sane interface for simprocs;
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   387
  Simplifier.simproc (Theory.sign_of HOL.thy) distinctN ["s = t"] distinct_proc;
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   389
val dist_ss = HOL_ss addsimprocs [distinct_simproc];
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   390
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   391
val simproc_setup =
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   392
  [Theory.add_oracle (distinctN, fn (_, ConstrDistinct t) => t),
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berghofe
parents: 6851
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   393
   fn thy => (simpset_ref_of thy := simpset_of thy addsimprocs [distinct_simproc]; thy)];
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   394
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
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parents: 6851
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   395
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   396
(**** translation rules for case ****)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   397
a405aadff16c Added more flexible parse / print translations for case expressions.
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   398
fun case_tr sg [t, u] =
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   399
    let
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   400
      fun case_error s name ts = raise TERM ("Error in case expression" ^
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
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   401
        if_none (apsome (curry op ^ " for datatype ") name) "" ^ ":\n" ^ s, ts);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
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   402
      fun dest_case1 (Const ("_case1", _) $ t $ u) = (case strip_comb t of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
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   403
            (Const (s, _), ts) => (Sign.intern_const sg s, ts)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   404
          | (Free (s, _), ts) => (Sign.intern_const sg s, ts)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
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   405
          | _ => case_error "Head is not a constructor" None [t, u], u)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   406
        | dest_case1 t = raise TERM ("dest_case1", [t]);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   407
      fun dest_case2 (Const ("_case2", _) $ t $ u) = t :: dest_case2 u
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   408
        | dest_case2 t = [t];
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   409
      val cases as ((cname, _), _) :: _ = map dest_case1 (dest_case2 u);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   410
      val tab = Symtab.dest (get_datatypes_sg sg);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   411
      val (cases', default) = (case split_last cases of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   412
          (cases', (("dummy_pattern", []), t)) => (cases', Some t)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   413
        | _ => (cases, None))
a405aadff16c Added more flexible parse / print translations for case expressions.
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parents: 14471
diff changeset
   414
      fun abstr (Free (x, T), body) = Term.absfree (x, T, body)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   415
        | abstr (Const ("_constrain", _) $ Free (x, T) $ tT, body) =
a405aadff16c Added more flexible parse / print translations for case expressions.
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parents: 14471
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   416
            Syntax.const Syntax.constrainAbsC $ Term.absfree (x, T, body) $ tT
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berghofe
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   417
        | abstr (Const ("Pair", _) $ x $ y, body) =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   418
            Syntax.const "split" $ abstr (x, abstr (y, body))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   419
        | abstr (t, _) = case_error "Illegal pattern" None [t];
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   420
    in case find_first (fn (_, {descr, index, ...}) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   421
      exists (equal cname o fst) (#3 (snd (nth_elem (index, descr))))) tab of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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diff changeset
   422
        None => case_error ("Not a datatype constructor: " ^ cname) None [u]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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diff changeset
   423
      | Some (tname, {descr, case_name, index, ...}) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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diff changeset
   424
        let
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   425
          val _ = if exists (equal "dummy_pattern" o fst o fst) cases' then
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   426
            case_error "Illegal occurrence of '_' dummy pattern" (Some tname) [u] else ();
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   427
          val (_, (_, dts, constrs)) = nth_elem (index, descr);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
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   428
          val sorts = map (rpair [] o dest_DtTFree) dts;
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   429
          fun find_case (cases, (s, dt)) =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   430
            (case find_first (equal s o fst o fst) cases' of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   431
               None => (case default of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   432
                   None => case_error ("No clause for constructor " ^ s) (Some tname) [u]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   433
                 | Some t => (cases, list_abs (map (rpair dummyT) (DatatypeProp.make_tnames
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   434
                     (map (typ_of_dtyp descr sorts) dt)), t)))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   435
             | Some (c as ((_, vs), t)) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   436
                 if length dt <> length vs then
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   437
                    case_error ("Wrong number of arguments for constructor " ^ s)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   438
                      (Some tname) vs
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   439
                 else (cases \ c, foldr abstr (vs, t)))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   440
          val (cases'', fs) = foldl_map find_case (cases', constrs)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   441
        in case (cases'', length constrs = length cases', default) of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   442
            ([], true, Some _) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   443
              case_error "Extra '_' dummy pattern" (Some tname) [u]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   444
          | (_ :: _, _, _) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   445
              let val extra = distinct (map (fst o fst) cases'')
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   446
              in case extra \\ map fst constrs of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   447
                  [] => case_error ("More than one clause for constructor(s) " ^
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   448
                    commas extra) (Some tname) [u]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   449
                | extra' => case_error ("Illegal constructor(s): " ^ commas extra')
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   450
                    (Some tname) [u]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   451
              end
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   452
          | _ => list_comb (Syntax.const case_name, fs) $ t
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   453
        end
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   454
    end
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   455
  | case_tr sg ts = raise TERM ("case_tr", ts);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   456
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   457
fun case_tr' constrs sg ts =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   458
  if length ts <> length constrs + 1 then raise Match else
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   459
  let
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   460
    val (fs, x) = split_last ts;
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   461
    fun strip_abs 0 t = ([], t)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   462
      | strip_abs i (Abs p) =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   463
        let val (x, u) = Syntax.atomic_abs_tr' p
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   464
        in apfst (cons x) (strip_abs (i-1) u) end
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   465
      | strip_abs i (Const ("split", _) $ t) = (case strip_abs (i+1) t of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   466
          (v :: v' :: vs, u) => (Syntax.const "Pair" $ v $ v' :: vs, u));
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   467
    fun is_dependent i t =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   468
      let val k = length (strip_abs_vars t) - i
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   469
      in k < 0 orelse exists (fn j => j >= k)
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   470
        (loose_bnos (strip_abs_body t))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   471
      end;
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   472
    val cases = map (fn ((cname, dts), t) =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   473
      (Sign.cond_extern sg Sign.constK cname,
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   474
       strip_abs (length dts) t, is_dependent (length dts) t))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   475
      (constrs ~~ fs);
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   476
    fun count_cases (cs, (_, _, true)) = cs
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   477
      | count_cases (cs, (cname, (_, body), false)) = (case assoc (cs, body) of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   478
          None => (body, [cname]) :: cs
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   479
        | Some cnames => overwrite (cs, (body, cnames @ [cname])));
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   480
    val cases' = sort (int_ord o Library.swap o pairself (length o snd))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   481
      (foldl count_cases ([], cases));
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   482
    fun mk_case1 (cname, (vs, body), _) = Syntax.const "_case1" $
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   483
      list_comb (Syntax.const cname, vs) $ body;
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   484
  in
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   485
    Syntax.const "_case_syntax" $ x $
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   486
      foldr1 (fn (t, u) => Syntax.const "_case2" $ t $ u) (map mk_case1
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   487
        (case cases' of
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   488
           [] => cases
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   489
         | (default, cnames) :: _ =>
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   490
           if length cnames = 1 then cases
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   491
           else if length cnames = length constrs then
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   492
             [hd cases, ("dummy_pattern", ([], default), false)]
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   493
           else
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   494
             filter_out (fn (cname, _, _) => cname mem cnames) cases @
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   495
             [("dummy_pattern", ([], default), false)]))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   496
  end;
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   497
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   498
fun make_case_tr' case_names descr = flat (map
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   499
  (fn ((_, (_, _, constrs)), case_name) => map (rpair (case_tr' constrs))
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   500
    (NameSpace.accesses' case_name)) (descr ~~ case_names));
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   501
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   502
val trfun_setup =
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   503
  [Theory.add_advanced_trfuns ([], [("_case_syntax", case_tr)], [], [])];
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   504
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   505
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   506
(* prepare types *)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   507
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   508
fun read_typ sign ((Ts, sorts), str) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   509
  let
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   510
    val T = Type.no_tvars (Sign.read_typ (sign, (curry assoc)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   511
      (map (apfst (rpair ~1)) sorts)) str) handle TYPE (msg, _, _) => error msg
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   512
  in (Ts @ [T], add_typ_tfrees (T, sorts)) end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   513
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   514
fun cert_typ sign ((Ts, sorts), raw_T) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   515
  let
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   516
    val T = Type.no_tvars (Sign.certify_typ sign raw_T) handle
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   517
      TYPE (msg, _, _) => error msg;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   518
    val sorts' = add_typ_tfrees (T, sorts)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   519
  in (Ts @ [T],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   520
      case duplicates (map fst sorts') of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   521
         [] => sorts'
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   522
       | dups => error ("Inconsistent sort constraints for " ^ commas dups))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   523
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   524
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   525
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   526
(**** make datatype info ****)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   527
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   528
fun make_dt_info descr induct reccomb_names rec_thms
10121
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   529
    (((((((((i, (_, (tname, _, _))), case_name), case_thms),
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   530
      exhaustion_thm), distinct_thm), inject), nchotomy), case_cong), weak_case_cong) =
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   531
  (tname,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   532
   {index = i,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   533
    descr = descr,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   534
    rec_names = reccomb_names,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   535
    rec_rewrites = rec_thms,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   536
    case_name = case_name,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   537
    case_rewrites = case_thms,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   538
    induction = induct,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   539
    exhaustion = exhaustion_thm,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   540
    distinct = distinct_thm,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   541
    inject = inject,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   542
    nchotomy = nchotomy,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   543
    case_cong = case_cong,
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   544
    weak_case_cong = weak_case_cong});
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   545
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   546
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   547
(********************* axiomatic introduction of datatypes ********************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   548
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   549
fun add_and_get_axioms_atts label tnames attss ts thy =
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   550
  foldr (fn (((tname, atts), t), (thy', axs)) =>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   551
    let
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   552
      val (thy'', [ax]) = thy' |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   553
        Theory.add_path tname |>
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   554
        PureThy.add_axioms_i [((label, t), atts)];
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   555
    in (Theory.parent_path thy'', ax::axs)
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   556
    end) (tnames ~~ attss ~~ ts, (thy, []));
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   557
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   558
fun add_and_get_axioms label tnames =
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   559
  add_and_get_axioms_atts label tnames (replicate (length tnames) []);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   560
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   561
fun add_and_get_axiomss label tnames tss thy =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   562
  foldr (fn ((tname, ts), (thy', axss)) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   563
    let
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   564
      val (thy'', [axs]) = thy' |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   565
        Theory.add_path tname |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   566
        PureThy.add_axiomss_i [((label, ts), [])];
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   567
    in (Theory.parent_path thy'', axs::axss)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   568
    end) (tnames ~~ tss, (thy, []));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   569
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   570
fun add_datatype_axm flat_names new_type_names descr sorts types_syntax constr_syntax dt_info
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   571
    case_names_induct case_names_exhausts thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   572
  let
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   573
    val descr' = flat descr;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   574
    val recTs = get_rec_types descr' sorts;
5578
7de426cf179c Package now chooses type variable names more carefully to
berghofe
parents: 5279
diff changeset
   575
    val used = foldr add_typ_tfree_names (recTs, []);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   576
    val newTs = take (length (hd descr), recTs);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   577
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   578
    val no_size = exists (fn (_, (_, _, constrs)) => exists (fn (_, cargs) => exists
13641
63d1790a43ed Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents: 13480
diff changeset
   579
      (fn dt => is_rec_type dt andalso not (null (fst (strip_dtyp dt))))
63d1790a43ed Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents: 13480
diff changeset
   580
        cargs) constrs) descr';
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   581
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   582
    (**** declare new types and constants ****)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   583
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   584
    val tyvars = map (fn (_, (_, Ts, _)) => map dest_DtTFree Ts) (hd descr);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   585
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   586
    val constr_decls = map (fn (((_, (_, _, constrs)), T), constr_syntax') =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   587
      map (fn ((_, cargs), (cname, mx)) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   588
        (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   589
          (constrs ~~ constr_syntax')) ((hd descr) ~~ newTs ~~ constr_syntax);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   590
5578
7de426cf179c Package now chooses type variable names more carefully to
berghofe
parents: 5279
diff changeset
   591
    val rec_result_Ts = map TFree (variantlist (replicate (length descr') "'t", used) ~~
12338
de0f4a63baa5 renamed class "term" to "type" (actually "HOL.type");
wenzelm
parents: 12311
diff changeset
   592
      replicate (length descr') HOLogic.typeS);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   593
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   594
    val reccomb_fn_Ts = flat (map (fn (i, (_, _, constrs)) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   595
      map (fn (_, cargs) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   596
        let
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   597
          val Ts = map (typ_of_dtyp descr' sorts) cargs;
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   598
          val recs = filter (is_rec_type o fst) (cargs ~~ Ts);
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   599
13641
63d1790a43ed Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents: 13480
diff changeset
   600
          fun mk_argT (dt, T) =
63d1790a43ed Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents: 13480
diff changeset
   601
            binder_types T ---> nth_elem (body_index dt, rec_result_Ts);
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   602
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   603
          val argTs = Ts @ map mk_argT recs
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   604
        in argTs ---> nth_elem (i, rec_result_Ts)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   605
        end) constrs) descr');
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   606
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   607
    val big_reccomb_name = (space_implode "_" new_type_names) ^ "_rec";
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   608
    val reccomb_names = if length descr' = 1 then [big_reccomb_name] else
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   609
      (map ((curry (op ^) (big_reccomb_name ^ "_")) o string_of_int)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   610
        (1 upto (length descr')));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   611
9739
8470c4662685 Improved names for size function.
berghofe
parents: 9714
diff changeset
   612
    val size_names = DatatypeProp.indexify_names
8470c4662685 Improved names for size function.
berghofe
parents: 9714
diff changeset
   613
      (map (fn T => name_of_typ T ^ "_size") (drop (length (hd descr), recTs)));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   614
12338
de0f4a63baa5 renamed class "term" to "type" (actually "HOL.type");
wenzelm
parents: 12311
diff changeset
   615
    val freeT = TFree (variant used "'t", HOLogic.typeS);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   616
    val case_fn_Ts = map (fn (i, (_, _, constrs)) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   617
      map (fn (_, cargs) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   618
        let val Ts = map (typ_of_dtyp descr' sorts) cargs
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   619
        in Ts ---> freeT end) constrs) (hd descr);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   620
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   621
    val case_names = map (fn s => (s ^ "_case")) new_type_names;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   622
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   623
    val thy2' = thy |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   624
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   625
      (** new types **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   626
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   627
      curry (foldr (fn (((name, mx), tvs), thy') => thy' |>
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   628
          TypedefPackage.add_typedecls [(name, tvs, mx)]))
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   629
        (types_syntax ~~ tyvars) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   630
      add_path flat_names (space_implode "_" new_type_names) |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   631
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   632
      (** primrec combinators **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   633
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   634
      Theory.add_consts_i (map (fn ((name, T), T') =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   635
        (name, reccomb_fn_Ts @ [T] ---> T', NoSyn))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   636
          (reccomb_names ~~ recTs ~~ rec_result_Ts)) |>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   637
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   638
      (** case combinators **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   639
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   640
      Theory.add_consts_i (map (fn ((name, T), Ts) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   641
        (name, Ts @ [T] ---> freeT, NoSyn))
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   642
          (case_names ~~ newTs ~~ case_fn_Ts));
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   643
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   644
    val reccomb_names' = map (Sign.intern_const (Theory.sign_of thy2')) reccomb_names;
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   645
    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
   646
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   647
    val thy2 = thy2' |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   648
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   649
      (** size functions **)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   650
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   651
      (if no_size then I else Theory.add_consts_i (map (fn (s, T) =>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   652
        (Sign.base_name s, T --> HOLogic.natT, NoSyn))
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   653
          (size_names ~~ drop (length (hd descr), recTs)))) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   654
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   655
      (** constructors **)
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   656
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   657
      parent_path flat_names |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   658
      curry (foldr (fn (((((_, (_, _, constrs)), T), tname),
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   659
        constr_syntax'), thy') => thy' |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   660
          add_path flat_names tname |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   661
            Theory.add_consts_i (map (fn ((_, cargs), (cname, mx)) =>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   662
              (cname, map (typ_of_dtyp descr' sorts) cargs ---> T, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   663
                (constrs ~~ constr_syntax')) |>
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   664
          parent_path flat_names))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   665
            (hd descr ~~ newTs ~~ new_type_names ~~ constr_syntax);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   666
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   667
    (**** introduction of axioms ****)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   668
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   669
    val rec_axs = DatatypeProp.make_primrecs new_type_names descr sorts thy2;
9739
8470c4662685 Improved names for size function.
berghofe
parents: 9714
diff changeset
   670
    val size_axs = if no_size then [] else DatatypeProp.make_size descr sorts thy2;
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   671
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   672
    val (thy3, (([induct], [rec_thms]), inject)) =
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   673
      thy2 |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   674
      Theory.add_path (space_implode "_" new_type_names) |>
10911
eb5721204b38 proper induction rule for arbitrarily branching datatype;
wenzelm
parents: 10525
diff changeset
   675
      PureThy.add_axioms_i [(("induct", DatatypeProp.make_ind descr sorts),
13340
9b0332344ae2 Simplified proof of induction rule for datatypes involving function types.
berghofe
parents: 12922
diff changeset
   676
        [case_names_induct])] |>>>
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   677
      PureThy.add_axiomss_i [(("recs", rec_axs), [])] |>>
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   678
      (if no_size then I else #1 o PureThy.add_axiomss_i [(("size", size_axs), [])]) |>>
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   679
      Theory.parent_path |>>>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   680
      add_and_get_axiomss "inject" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   681
        (DatatypeProp.make_injs descr sorts);
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   682
    val size_thms = if no_size then [] else get_thms thy3 "size";
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   683
    val (thy4, distinct) = add_and_get_axiomss "distinct" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   684
      (DatatypeProp.make_distincts new_type_names descr sorts thy3) thy3;
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   685
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   686
    val exhaust_ts = DatatypeProp.make_casedists descr sorts;
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   687
    val (thy5, exhaustion) = add_and_get_axioms_atts "exhaust" new_type_names
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   688
      (map Library.single case_names_exhausts) exhaust_ts thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   689
    val (thy6, case_thms) = add_and_get_axiomss "cases" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   690
      (DatatypeProp.make_cases new_type_names descr sorts thy5) thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   691
    val (split_ts, split_asm_ts) = ListPair.unzip
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   692
      (DatatypeProp.make_splits new_type_names descr sorts thy6);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   693
    val (thy7, split) = add_and_get_axioms "split" new_type_names split_ts thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   694
    val (thy8, split_asm) = add_and_get_axioms "split_asm" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   695
      split_asm_ts thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   696
    val (thy9, nchotomys) = add_and_get_axioms "nchotomy" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   697
      (DatatypeProp.make_nchotomys descr sorts) thy8;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   698
    val (thy10, case_congs) = add_and_get_axioms "case_cong" new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   699
      (DatatypeProp.make_case_congs new_type_names descr sorts thy9) thy9;
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   700
    val (thy11, weak_case_congs) = add_and_get_axioms "weak_case_cong" new_type_names
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   701
      (DatatypeProp.make_weak_case_congs new_type_names descr sorts thy10) thy10;
8405
0255394a05da add_cases_induct: produce proper case names;
wenzelm
parents: 8325
diff changeset
   702
6305
4cbdb974220c Fixed bug in add_datatype_axm:
berghofe
parents: 6103
diff changeset
   703
    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
   704
      ((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
   705
        exhaustion ~~ replicate (length (hd descr)) QuickAndDirty ~~ inject ~~
10121
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   706
          nchotomys ~~ case_congs ~~ weak_case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   707
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   708
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
9386
8800603d99f6 theorems foo.splits = foo.split foo.split_asm;
wenzelm
parents: 9149
diff changeset
   709
    val split_thms = split ~~ split_asm;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   710
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   711
    val thy12 = thy11 |>
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   712
      Theory.add_advanced_trfuns ([], [], make_case_tr' case_names' (hd descr), []) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   713
      Theory.add_path (space_implode "_" new_type_names) |>
11345
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   714
      add_rules simps case_thms size_thms rec_thms inject distinct
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   715
                weak_case_congs Simplifier.cong_add_global |> 
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   716
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
11805
b110a1ea90da declare projected induction rules stemming from nested recursion;
wenzelm
parents: 11725
diff changeset
   717
      add_cases_induct dt_infos induct |>
9386
8800603d99f6 theorems foo.splits = foo.split foo.split_asm;
wenzelm
parents: 9149
diff changeset
   718
      Theory.parent_path |>
13466
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   719
      (#1 o store_thmss "splits" new_type_names (map (fn (x, y) => [x, y]) split_thms)) |>
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   720
      DatatypeRealizer.add_dt_realizers sorts (map snd dt_infos);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   721
  in
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   722
    (thy12,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   723
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   724
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   725
      exhaustion = exhaustion,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   726
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   727
      case_thms = case_thms,
9386
8800603d99f6 theorems foo.splits = foo.split foo.split_asm;
wenzelm
parents: 9149
diff changeset
   728
      split_thms = split_thms,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   729
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   730
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   731
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   732
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   733
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   734
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   735
(******************* definitional introduction of datatypes *******************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   736
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   737
fun add_datatype_def flat_names new_type_names descr sorts types_syntax constr_syntax dt_info
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   738
    case_names_induct case_names_exhausts thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   739
  let
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   740
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   741
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   742
    val (thy2, inject, distinct, dist_rewrites, simproc_dists, induct) = thy |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   743
      DatatypeRepProofs.representation_proofs flat_names dt_info new_type_names descr sorts
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   744
        types_syntax constr_syntax case_names_induct;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   745
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   746
    val (thy3, casedist_thms) = DatatypeAbsProofs.prove_casedist_thms new_type_names descr
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   747
      sorts induct case_names_exhausts thy2;
8478
6053a5cd2881 Eliminated store_clasimp.
berghofe
parents: 8442
diff changeset
   748
    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
   749
      flat_names new_type_names descr sorts dt_info inject dist_rewrites dist_ss induct thy3;
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   750
    val (thy6, (case_thms, case_names)) = DatatypeAbsProofs.prove_case_thms
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   751
      flat_names new_type_names descr sorts reccomb_names rec_thms thy4;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   752
    val (thy7, split_thms) = DatatypeAbsProofs.prove_split_thms new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   753
      descr sorts inject dist_rewrites casedist_thms case_thms thy6;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   754
    val (thy8, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   755
      descr sorts casedist_thms thy7;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   756
    val (thy9, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   757
      descr sorts nchotomys case_thms thy8;
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   758
    val (thy10, weak_case_congs) = DatatypeAbsProofs.prove_weak_case_congs new_type_names
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   759
      descr sorts thy9;
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   760
    val (thy11, size_thms) = DatatypeAbsProofs.prove_size_thms flat_names new_type_names
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   761
      descr sorts reccomb_names rec_thms thy10;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   762
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   763
    val dt_infos = map (make_dt_info (flat descr) induct reccomb_names rec_thms)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   764
      ((0 upto length (hd descr) - 1) ~~ (hd descr) ~~ case_names ~~ case_thms ~~
10121
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   765
        casedist_thms ~~ simproc_dists ~~ inject ~~ nchotomys ~~ case_congs ~~ weak_case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   766
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   767
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   768
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   769
    val thy12 = thy11 |>
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   770
      Theory.add_advanced_trfuns ([], [], make_case_tr' case_names (hd descr), []) |>
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   771
      Theory.add_path (space_implode "_" new_type_names) |>
11345
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   772
      add_rules simps case_thms size_thms rec_thms inject distinct
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   773
                weak_case_congs (Simplifier.change_global_ss (op addcongs)) |> 
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   774
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
11805
b110a1ea90da declare projected induction rules stemming from nested recursion;
wenzelm
parents: 11725
diff changeset
   775
      add_cases_induct dt_infos induct |>
9386
8800603d99f6 theorems foo.splits = foo.split foo.split_asm;
wenzelm
parents: 9149
diff changeset
   776
      Theory.parent_path |>
13466
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   777
      (#1 o store_thmss "splits" new_type_names (map (fn (x, y) => [x, y]) split_thms)) |>
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   778
      DatatypeRealizer.add_dt_realizers sorts (map snd dt_infos);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   779
  in
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   780
    (thy12,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   781
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   782
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   783
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   784
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   785
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   786
      split_thms = split_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   787
      induction = induct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   788
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   789
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   790
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   791
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   792
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   793
(*********************** declare existing type as datatype *********************)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   794
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   795
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
   796
  let
12922
ed70a600f0ea clarified internal theory dependencies;
wenzelm
parents: 12876
diff changeset
   797
    val _ = Theory.requires thy0 "Inductive" "datatype representations";
ed70a600f0ea clarified internal theory dependencies;
wenzelm
parents: 12876
diff changeset
   798
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   799
    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
   800
    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
   801
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   802
    val (((thy1, induction), inject), distinct) = thy0
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   803
      |> app_thmss raw_distinct
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   804
      |> apfst (app_thmss raw_inject)
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   805
      |> apfst (apfst (app_thm raw_induction));
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   806
    val sign = Theory.sign_of thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   807
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   808
    val induction' = freezeT induction;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   809
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   810
    fun err t = error ("Ill-formed predicate in induction rule: " ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   811
      Sign.string_of_term sign t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   812
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   813
    fun get_typ (t as _ $ Var (_, Type (tname, Ts))) =
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   814
          ((tname, map dest_TFree Ts) handle TERM _ => err t)
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   815
      | get_typ t = err t;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   816
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   817
    val dtnames = map get_typ (HOLogic.dest_conj (HOLogic.dest_Trueprop (Thm.concl_of induction')));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   818
    val new_type_names = if_none alt_names (map fst dtnames);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   819
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   820
    fun get_constr t = (case Logic.strip_assums_concl t of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   821
        _ $ (_ $ t') => (case head_of t' of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   822
            Const (cname, cT) => (case strip_type cT of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   823
                (Ts, Type (tname, _)) => (tname, (cname, map (dtyp_of_typ dtnames) Ts))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   824
              | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   825
          | _ => err t)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   826
      | _ => err t);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   827
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   828
    fun make_dt_spec [] _ _ = []
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   829
      | make_dt_spec ((tname, tvs)::dtnames') i constrs =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   830
          let val (constrs', constrs'') = take_prefix (equal tname o fst) constrs
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   831
          in (i, (tname, map DtTFree tvs, map snd constrs'))::
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   832
            (make_dt_spec dtnames' (i + 1) constrs'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   833
          end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   834
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   835
    val descr = make_dt_spec dtnames 0 (map get_constr (prems_of induction'));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   836
    val sorts = add_term_tfrees (concl_of induction', []);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   837
    val dt_info = get_datatypes thy1;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   838
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   839
    val case_names_induct = mk_case_names_induct descr;
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   840
    val case_names_exhausts = mk_case_names_exhausts descr (map #1 dtnames);
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   841
    
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   842
6427
fd36b2e7d80e tuned messages;
wenzelm
parents: 6423
diff changeset
   843
    val _ = message ("Proofs for datatype(s) " ^ commas_quote new_type_names);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   844
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   845
    val (thy2, casedist_thms) = thy1 |>
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   846
      DatatypeAbsProofs.prove_casedist_thms new_type_names [descr] sorts induction
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   847
        case_names_exhausts;
8478
6053a5cd2881 Eliminated store_clasimp.
berghofe
parents: 8442
diff changeset
   848
    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
   849
      false new_type_names [descr] sorts dt_info inject distinct dist_ss induction thy2;
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   850
    val (thy4, (case_thms, case_names)) = DatatypeAbsProofs.prove_case_thms false
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   851
      new_type_names [descr] sorts reccomb_names rec_thms thy3;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   852
    val (thy5, split_thms) = DatatypeAbsProofs.prove_split_thms
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   853
      new_type_names [descr] sorts inject distinct casedist_thms case_thms thy4;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   854
    val (thy6, nchotomys) = DatatypeAbsProofs.prove_nchotomys new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   855
      [descr] sorts casedist_thms thy5;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   856
    val (thy7, case_congs) = DatatypeAbsProofs.prove_case_congs new_type_names
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   857
      [descr] sorts nchotomys case_thms thy6;
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   858
    val (thy8, weak_case_congs) = DatatypeAbsProofs.prove_weak_case_congs new_type_names
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   859
      [descr] sorts thy7;
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   860
    val (thy9, size_thms) =
10930
7c7a7b0e1d0c Sign.exists_stamp;
wenzelm
parents: 10911
diff changeset
   861
      if Sign.exists_stamp "NatArith" (Theory.sign_of thy8) then
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   862
        DatatypeAbsProofs.prove_size_thms false new_type_names
8601
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   863
          [descr] sorts reccomb_names rec_thms thy8
8fb3a81b4ccf added weak_case_cong feature
nipkow
parents: 8541
diff changeset
   864
      else (thy8, []);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   865
9149
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   866
    val (thy10, [induction']) = thy9 |>
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   867
      (#1 o store_thmss "inject" new_type_names inject) |>
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   868
      (#1 o store_thmss "distinct" new_type_names distinct) |>
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   869
      Theory.add_path (space_implode "_" new_type_names) |>
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   870
      PureThy.add_thms [(("induct", induction), [case_names_induct])];
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   871
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   872
    val dt_infos = map (make_dt_info descr induction' reccomb_names rec_thms)
10121
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   873
      ((0 upto length descr - 1) ~~ descr ~~ case_names ~~ case_thms ~~ casedist_thms ~~
fb9be005cc44 export get_datatypes_sg;
wenzelm
parents: 9747
diff changeset
   874
        map FewConstrs distinct ~~ inject ~~ nchotomys ~~ case_congs ~~ weak_case_congs);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   875
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   876
    val simps = flat (distinct @ inject @ case_thms) @ size_thms @ rec_thms;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   877
9149
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   878
    val thy11 = thy10 |>
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   879
      Theory.add_advanced_trfuns ([], [], make_case_tr' case_names descr, []) |>
11345
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   880
      add_rules simps case_thms size_thms rec_thms inject distinct
cd605c85e421 improved iff_add_global, new function add_rules factoring out common behaviour
oheimb
parents: 10930
diff changeset
   881
                weak_case_congs (Simplifier.change_global_ss (op addcongs)) |> 
9149
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   882
      put_datatypes (foldr Symtab.update (dt_infos, dt_info)) |>
11805
b110a1ea90da declare projected induction rules stemming from nested recursion;
wenzelm
parents: 11725
diff changeset
   883
      add_cases_induct dt_infos induction' |>
9386
8800603d99f6 theorems foo.splits = foo.split foo.split_asm;
wenzelm
parents: 9149
diff changeset
   884
      Theory.parent_path |>
13466
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   885
      (#1 o store_thmss "splits" new_type_names (map (fn (x, y) => [x, y]) split_thms)) |>
42766aa25460 Added calls to add_dt_realizers.
berghofe
parents: 13462
diff changeset
   886
      DatatypeRealizer.add_dt_realizers sorts (map snd dt_infos);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   887
  in
9149
a126a40cba76 export proper induction rule;
wenzelm
parents: 8697
diff changeset
   888
    (thy11,
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   889
     {distinct = distinct,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   890
      inject = inject,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   891
      exhaustion = casedist_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   892
      rec_thms = rec_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   893
      case_thms = case_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   894
      split_thms = split_thms,
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   895
      induction = induction',
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   896
      size = size_thms,
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   897
      simps = simps})
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   898
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   899
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   900
val rep_datatype = gen_rep_datatype IsarThy.apply_theorems;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   901
val rep_datatype_i = gen_rep_datatype IsarThy.apply_theorems_i;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
   902
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   903
11958
2ece34b9fd8e Isar: fixed rep_datatype args;
wenzelm
parents: 11805
diff changeset
   904
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   905
(******************************** add datatype ********************************)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   906
14887
4938ce4ef295 Added exception Datatype_Empty.
berghofe
parents: 14799
diff changeset
   907
fun gen_add_datatype prep_typ err flat_names new_type_names dts thy =
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   908
  let
12922
ed70a600f0ea clarified internal theory dependencies;
wenzelm
parents: 12876
diff changeset
   909
    val _ = Theory.requires thy "Datatype_Universe" "datatype definitions";
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   910
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   911
    (* this theory is used just for parsing *)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   912
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   913
    val tmp_thy = thy |>
5892
e5e44cc54eb2 Attribute.tthms_of;
wenzelm
parents: 5720
diff changeset
   914
      Theory.copy |>
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   915
      Theory.add_types (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   916
        (tname, length tvs, mx)) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   917
6394
3d9fd50fcc43 Theory.sign_of;
wenzelm
parents: 6385
diff changeset
   918
    val sign = Theory.sign_of tmp_thy;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   919
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   920
    val (tyvars, _, _, _)::_ = dts;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   921
    val (new_dts, types_syntax) = ListPair.unzip (map (fn (tvs, tname, mx, _) =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   922
      let val full_tname = Sign.full_name sign (Syntax.type_name tname mx)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   923
      in (case duplicates tvs of
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   924
            [] => if eq_set (tyvars, tvs) then ((full_tname, tvs), (tname, mx))
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   925
                  else error ("Mutually recursive datatypes must have same type parameters")
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   926
          | dups => error ("Duplicate parameter(s) for datatype " ^ full_tname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   927
              " : " ^ commas dups))
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   928
      end) dts);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   929
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   930
    val _ = (case duplicates (map fst new_dts) @ duplicates new_type_names of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   931
      [] => () | dups => error ("Duplicate datatypes: " ^ commas dups));
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   932
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   933
    fun prep_dt_spec ((dts', constr_syntax, sorts, i), (tvs, tname, mx, constrs)) =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   934
      let
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   935
        fun prep_constr ((constrs, constr_syntax', sorts'), (cname, cargs, mx')) =
5279
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   936
          let
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   937
            val (cargs', sorts'') = foldl (prep_typ sign) (([], sorts'), cargs);
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   938
            val _ = (case foldr add_typ_tfree_names (cargs', []) \\ tvs of
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   939
                [] => ()
cba6a96f5812 Improved well-formedness check.
berghofe
parents: 5177
diff changeset
   940
              | vs => error ("Extra type variables on rhs: " ^ commas vs))
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   941
          in (constrs @ [((if flat_names then Sign.full_name sign else
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   942
                Sign.full_name_path sign tname) (Syntax.const_name cname mx'),
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   943
                   map (dtyp_of_typ new_dts) cargs')],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   944
              constr_syntax' @ [(cname, mx')], sorts'')
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   945
          end handle ERROR =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   946
            error ("The error above occured in constructor " ^ cname ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   947
              " of datatype " ^ tname);
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   948
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   949
        val (constrs', constr_syntax', sorts') =
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   950
          foldl prep_constr (([], [], sorts), constrs)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   951
8405
0255394a05da add_cases_induct: produce proper case names;
wenzelm
parents: 8325
diff changeset
   952
      in
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   953
        case duplicates (map fst constrs') of
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   954
           [] =>
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   955
             (dts' @ [(i, (Sign.full_name sign (Syntax.type_name tname mx),
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   956
                map DtTFree tvs, constrs'))],
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   957
              constr_syntax @ [constr_syntax'], sorts', i + 1)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   958
         | dups => error ("Duplicate constructors " ^ commas dups ^
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   959
             " in datatype " ^ tname)
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   960
      end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   961
5661
6ecb6ea25f19 - Changed structure of name spaces
berghofe
parents: 5578
diff changeset
   962
    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
   963
    val sorts = sorts' @ (map (rpair (Sign.defaultS sign)) (tyvars \\ map fst sorts'));
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   964
    val dt_info = get_datatypes thy;
7015
85be09eb136c - Datatype package now also supports arbitrarily branching datatypes
berghofe
parents: 6851
diff changeset
   965
    val (descr, _) = unfold_datatypes sign dts' sorts dt_info dts' i;
14887
4938ce4ef295 Added exception Datatype_Empty.
berghofe
parents: 14799
diff changeset
   966
    val _ = check_nonempty descr handle (exn as Datatype_Empty s) =>
4938ce4ef295 Added exception Datatype_Empty.
berghofe
parents: 14799
diff changeset
   967
      if err then error ("Nonemptiness check failed for datatype " ^ s)
4938ce4ef295 Added exception Datatype_Empty.
berghofe
parents: 14799
diff changeset
   968
      else raise exn;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   969
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   970
    val descr' = flat descr;
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   971
    val case_names_induct = mk_case_names_induct descr';
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   972
    val case_names_exhausts = mk_case_names_exhausts descr' (map #1 new_dts);
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   973
  in
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   974
    (if (!quick_and_dirty) then add_datatype_axm else add_datatype_def)
8437
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   975
      flat_names new_type_names descr sorts types_syntax constr_syntax dt_info
258281c43dea removed cases_of;
wenzelm
parents: 8405
diff changeset
   976
      case_names_induct case_names_exhausts thy
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   977
  end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   978
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   979
val add_datatype_i = gen_add_datatype cert_typ;
14887
4938ce4ef295 Added exception Datatype_Empty.
berghofe
parents: 14799
diff changeset
   980
val add_datatype = gen_add_datatype read_typ true;
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
   981
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   982
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   983
(** package setup **)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   984
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   985
(* setup theory *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   986
14799
a405aadff16c Added more flexible parse / print translations for case expressions.
berghofe
parents: 14471
diff changeset
   987
val setup = [DatatypesData.init, Method.add_methods tactic_emulations] @ simproc_setup @ trfun_setup;
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   988
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   989
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   990
(* outer syntax *)
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   991
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   992
local structure P = OuterParse and K = OuterSyntax.Keyword in
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   993
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   994
val datatype_decl =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
   995
  Scan.option (P.$$$ "(" |-- P.name --| P.$$$ ")") -- P.type_args -- P.name -- P.opt_infix --
12876
a70df1e5bf10 got rid of explicit marginal comments (now stripped earlier from input);
wenzelm
parents: 12708
diff changeset
   996
    (P.$$$ "=" |-- P.enum1 "|" (P.name -- Scan.repeat P.typ -- P.opt_mixfix));
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   997
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   998
fun mk_datatype args =
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
   999
  let
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1000
    val names = map (fn ((((None, _), t), _), _) => t | ((((Some t, _), _), _), _) => t) args;
12876
a70df1e5bf10 got rid of explicit marginal comments (now stripped earlier from input);
wenzelm
parents: 12708
diff changeset
  1001
    val specs = map (fn ((((_, vs), t), mx), cons) =>
a70df1e5bf10 got rid of explicit marginal comments (now stripped earlier from input);
wenzelm
parents: 12708
diff changeset
  1002
      (vs, t, mx, map (fn ((x, y), z) => (x, y, z)) cons)) args;
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1003
  in #1 o add_datatype false names specs end;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1004
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1005
val datatypeP =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
  1006
  OuterSyntax.command "datatype" "define inductive datatypes" K.thy_decl
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
  1007
    (P.and_list1 datatype_decl >> (Toplevel.theory o mk_datatype));
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1008
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1009
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1010
val rep_datatype_decl =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
  1011
  Scan.option (Scan.repeat1 P.name) --
11958
2ece34b9fd8e Isar: fixed rep_datatype args;
wenzelm
parents: 11805
diff changeset
  1012
    Scan.optional (P.$$$ "distinct" |-- P.!!! (P.and_list1 P.xthms1)) [[]] --
2ece34b9fd8e Isar: fixed rep_datatype args;
wenzelm
parents: 11805
diff changeset
  1013
    Scan.optional (P.$$$ "inject" |-- P.!!! (P.and_list1 P.xthms1)) [[]] --
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
  1014
    (P.$$$ "induction" |-- P.!!! P.xthm);
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1015
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1016
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
  1017
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1018
val rep_datatypeP =
6723
f342449d73ca outer syntax keyword classification;
wenzelm
parents: 6556
diff changeset
  1019
  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
  1020
    (rep_datatype_decl >> (Toplevel.theory o mk_rep_datatype));
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1021
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1022
6479
b0448cab1b1e rep_datatype syntax: 'induction' instead of 'induct';
wenzelm
parents: 6441
diff changeset
  1023
val _ = OuterSyntax.add_keywords ["distinct", "inject", "induction"];
6385
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1024
val _ = OuterSyntax.add_parsers [datatypeP, rep_datatypeP];
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1025
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1026
end;
5a6570458d9e rep_datatype: '_i' version, attributes, outer syntax;
wenzelm
parents: 6360
diff changeset
  1027
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1028
5177
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
  1029
end;
0d3a168e4d44 New datatype definition package
berghofe
parents:
diff changeset
  1030
6360
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1031
structure BasicDatatypePackage: BASIC_DATATYPE_PACKAGE = DatatypePackage;
83573ae0f22c outer syntax for 'datatype';
wenzelm
parents: 6305
diff changeset
  1032
open BasicDatatypePackage;