src/HOL/Tools/record_package.ML
author wenzelm
Tue Oct 20 16:38:37 1998 +0200 (1998-10-20)
changeset 5698 2b5d9bdec5af
parent 5290 b755c7240348
child 5707 b0e631634b5a
permissions -rw-r--r--
field types: datatype;
record_split_tac;
quiet_mode;
renamed fst/snd to val/more;
structure BasicRecordPackage;
wenzelm@4867
     1
(*  Title:      HOL/Tools/record_package.ML
wenzelm@4867
     2
    ID:         $Id$
wenzelm@4867
     3
    Author:     Wolfgang Naraschewski and Markus Wenzel, TU Muenchen
wenzelm@4867
     4
wenzelm@4867
     5
Extensible records with structural subtyping in HOL.
wenzelm@5698
     6
*)
wenzelm@4867
     7
wenzelm@5698
     8
signature BASIC_RECORD_PACKAGE =
wenzelm@5698
     9
sig
wenzelm@5698
    10
  val record_split_tac: int -> tactic
wenzelm@5698
    11
  val record_split_wrapper: string * wrapper
wenzelm@5698
    12
end;
wenzelm@4867
    13
wenzelm@4867
    14
signature RECORD_PACKAGE =
wenzelm@4867
    15
sig
wenzelm@5698
    16
  include BASIC_RECORD_PACKAGE
wenzelm@5698
    17
  val quiet_mode: bool ref
wenzelm@4890
    18
  val moreS: sort
wenzelm@4890
    19
  val mk_fieldT: (string * typ) * typ -> typ
wenzelm@4890
    20
  val dest_fieldT: typ -> (string * typ) * typ
wenzelm@4890
    21
  val mk_field: (string * term) * term -> term
wenzelm@4890
    22
  val mk_fst: term -> term
wenzelm@4890
    23
  val mk_snd: term -> term
wenzelm@4890
    24
  val mk_recordT: (string * typ) list * typ -> typ
wenzelm@4890
    25
  val dest_recordT: typ -> (string * typ) list * typ
wenzelm@4890
    26
  val mk_record: (string * term) list * term -> term
wenzelm@4890
    27
  val mk_sel: term -> string -> term
wenzelm@4890
    28
  val mk_update: term -> string * term -> term
wenzelm@4867
    29
  val print_records: theory -> unit
wenzelm@4867
    30
  val add_record: (string list * bstring) -> string option
wenzelm@4867
    31
    -> (bstring * string) list -> theory -> theory
wenzelm@4867
    32
  val add_record_i: (string list * bstring) -> (typ list * string) option
wenzelm@4867
    33
    -> (bstring * typ) list -> theory -> theory
wenzelm@4867
    34
  val setup: (theory -> theory) list
wenzelm@4867
    35
end;
wenzelm@4867
    36
wenzelm@4867
    37
structure RecordPackage: RECORD_PACKAGE =
wenzelm@4867
    38
struct
wenzelm@4867
    39
wenzelm@4867
    40
wenzelm@4894
    41
(*** utilities ***)
wenzelm@4867
    42
wenzelm@5698
    43
(* messages *)
wenzelm@5698
    44
wenzelm@5698
    45
val quiet_mode = ref false;
wenzelm@5698
    46
fun message s = if ! quiet_mode then () else writeln s;
wenzelm@5698
    47
wenzelm@5698
    48
wenzelm@4894
    49
(* definitions and equations *)
wenzelm@4867
    50
wenzelm@5698
    51
infix 0 :== ===;
wenzelm@4894
    52
wenzelm@4894
    53
val (op :==) = Logic.mk_defpair;
wenzelm@4894
    54
val (op ===) = HOLogic.mk_Trueprop o HOLogic.mk_eq;
wenzelm@4894
    55
wenzelm@4894
    56
fun get_defs thy specs = map (PureThy.get_tthm thy o fst) specs;
wenzelm@4894
    57
wenzelm@4894
    58
wenzelm@4894
    59
(* proof by simplification *)
wenzelm@4890
    60
wenzelm@5698
    61
fun prove_simp thy tacs simps =
wenzelm@4894
    62
  let
wenzelm@4895
    63
    val sign = Theory.sign_of thy;
wenzelm@4895
    64
    val ss = Simplifier.addsimps (HOL_basic_ss, map Attribute.thm_of simps);
wenzelm@4895
    65
wenzelm@4895
    66
    fun prove goal =
wenzelm@4894
    67
      Attribute.tthm_of
wenzelm@4895
    68
        (Goals.prove_goalw_cterm [] (Thm.cterm_of sign goal)
wenzelm@5698
    69
          (K (tacs @ [ALLGOALS (Simplifier.simp_tac ss)]))
wenzelm@4894
    70
        handle ERROR => error ("The error(s) above occurred while trying to prove "
wenzelm@4895
    71
          ^ quote (Sign.string_of_term sign goal)));
wenzelm@4894
    72
  in prove end;
wenzelm@4894
    73
wenzelm@4894
    74
wenzelm@4894
    75
wenzelm@4894
    76
(*** syntax operations ***)
wenzelm@4894
    77
wenzelm@4894
    78
(** name components **)
wenzelm@4894
    79
wenzelm@4894
    80
val moreN = "more";
wenzelm@4894
    81
val schemeN = "_scheme";
wenzelm@4894
    82
val fieldN = "_field";
wenzelm@5698
    83
val raw_fieldN = "_raw_field";
wenzelm@4894
    84
val field_typeN = "_field_type";
wenzelm@5698
    85
val fstN = "_val";
wenzelm@5698
    86
val sndN = "_more";
wenzelm@4894
    87
val updateN = "_update";
wenzelm@4894
    88
val makeN = "make";
wenzelm@4894
    89
val make_schemeN = "make_scheme";
wenzelm@4890
    90
wenzelm@5698
    91
(*see datatype package*)
wenzelm@5698
    92
val caseN = "_case";
wenzelm@5698
    93
wenzelm@5698
    94
wenzelm@5698
    95
wenzelm@5698
    96
(** generic operations **)
wenzelm@5698
    97
wenzelm@5698
    98
fun fst_fn T U = Abs ("x", T, Abs ("y", U, Bound 1));
wenzelm@5698
    99
fun snd_fn T U = Abs ("x", T, Abs ("y", U, Bound 0));
wenzelm@5698
   100
wenzelm@5698
   101
fun mk_prod_case name f p =
wenzelm@5698
   102
  let
wenzelm@5698
   103
    val fT as Type ("fun", [A, Type ("fun", [B, C])]) = fastype_of f;
wenzelm@5698
   104
    val pT = fastype_of p;
wenzelm@5698
   105
  in Const (suffix caseN name, fT --> pT --> C) $ f $ p end;
wenzelm@5698
   106
wenzelm@4890
   107
wenzelm@4890
   108
wenzelm@4867
   109
(** tuple operations **)
wenzelm@4867
   110
wenzelm@4867
   111
(* more type class *)
wenzelm@4867
   112
wenzelm@5210
   113
val moreS = ["Record.more"];
wenzelm@4867
   114
wenzelm@4867
   115
wenzelm@4867
   116
(* types *)
wenzelm@4867
   117
wenzelm@4867
   118
fun mk_fieldT ((c, T), U) = Type (suffix field_typeN c, [T, U]);
wenzelm@4867
   119
wenzelm@4867
   120
fun dest_fieldT (typ as Type (c_field_type, [T, U])) =
wenzelm@4867
   121
      (case try (unsuffix field_typeN) c_field_type of
wenzelm@4867
   122
        None => raise TYPE ("dest_fieldT", [typ], [])
wenzelm@4867
   123
      | Some c => ((c, T), U))
wenzelm@4867
   124
  | dest_fieldT typ = raise TYPE ("dest_fieldT", [typ], []);
wenzelm@4867
   125
wenzelm@4867
   126
wenzelm@4867
   127
(* constructors *)
wenzelm@4867
   128
wenzelm@4867
   129
fun mk_fieldC U (c, T) = (suffix fieldN c, T --> U --> mk_fieldT ((c, T), U));
wenzelm@4867
   130
wenzelm@5698
   131
fun gen_mk_field sfx ((c, t), u) =
wenzelm@4867
   132
  let val T = fastype_of t and U = fastype_of u
wenzelm@5698
   133
  in Const (suffix sfx c, [T, U] ---> mk_fieldT ((c, T), U)) $ t $ u end;
wenzelm@5698
   134
wenzelm@5698
   135
val mk_field = gen_mk_field fieldN;
wenzelm@5698
   136
val mk_raw_field = gen_mk_field raw_fieldN;
wenzelm@4867
   137
wenzelm@4867
   138
wenzelm@4867
   139
(* destructors *)
wenzelm@4867
   140
wenzelm@4867
   141
fun mk_fstC U (c, T) = (suffix fstN c, mk_fieldT ((c, T), U) --> T);
wenzelm@4867
   142
fun mk_sndC U (c, T) = (suffix sndN c, mk_fieldT ((c, T), U) --> U);
wenzelm@4867
   143
wenzelm@4867
   144
fun dest_field fst_or_snd p =
wenzelm@4867
   145
  let
wenzelm@4867
   146
    val pT = fastype_of p;
wenzelm@4867
   147
    val ((c, T), U) = dest_fieldT pT;
wenzelm@4867
   148
    val (destN, destT) = if fst_or_snd then (fstN, T) else (sndN, U);
wenzelm@4867
   149
  in Const (suffix destN c, pT --> destT) $ p end;
wenzelm@4867
   150
wenzelm@4867
   151
val mk_fst = dest_field true;
wenzelm@4867
   152
val mk_snd = dest_field false;
wenzelm@4867
   153
wenzelm@4867
   154
wenzelm@4867
   155
wenzelm@4867
   156
(** record operations **)
wenzelm@4867
   157
wenzelm@4867
   158
(* types *)
wenzelm@4867
   159
wenzelm@4867
   160
val mk_recordT = foldr mk_fieldT;
wenzelm@4867
   161
wenzelm@4867
   162
fun dest_recordT T =
wenzelm@4867
   163
  (case try dest_fieldT T of
wenzelm@4867
   164
    None => ([], T)
wenzelm@4867
   165
  | Some (c_T, U) => apfst (cons c_T) (dest_recordT U));
wenzelm@4867
   166
wenzelm@4867
   167
fun find_fieldT c rT =
wenzelm@4867
   168
  (case assoc (fst (dest_recordT rT), c) of
wenzelm@4867
   169
    None => raise TYPE ("find_field: " ^ c, [rT], [])
wenzelm@4867
   170
  | Some T => T);
wenzelm@4867
   171
wenzelm@4867
   172
wenzelm@4867
   173
(* constructors *)
wenzelm@4867
   174
wenzelm@4867
   175
val mk_record = foldr mk_field;
wenzelm@4867
   176
wenzelm@4867
   177
wenzelm@4867
   178
(* selectors *)
wenzelm@4867
   179
wenzelm@4867
   180
fun mk_selC rT (c, T) = (c, rT --> T);
wenzelm@4867
   181
wenzelm@4890
   182
fun mk_sel r c =
wenzelm@4867
   183
  let val rT = fastype_of r
wenzelm@4867
   184
  in Const (mk_selC rT (c, find_fieldT c rT)) $ r end;
wenzelm@4867
   185
wenzelm@4894
   186
val mk_moreC = mk_selC;
wenzelm@4894
   187
wenzelm@4894
   188
fun mk_more r c =
wenzelm@4894
   189
  let val rT = fastype_of r
wenzelm@4894
   190
  in Const (mk_moreC rT (c, snd (dest_recordT rT))) $ r end;
wenzelm@4894
   191
wenzelm@4867
   192
wenzelm@4867
   193
(* updates *)
wenzelm@4867
   194
wenzelm@4867
   195
fun mk_updateC rT (c, T) = (suffix updateN c, T --> rT --> rT);
wenzelm@4867
   196
wenzelm@4890
   197
fun mk_update r (c, x) =
wenzelm@4867
   198
  let val rT = fastype_of r
wenzelm@4867
   199
  in Const (mk_updateC rT (c, find_fieldT c rT)) $ x $ r end;
wenzelm@4867
   200
wenzelm@5197
   201
val mk_more_updateC = mk_updateC;
wenzelm@5197
   202
wenzelm@5197
   203
fun mk_more_update r (c, x) =
wenzelm@5197
   204
  let val rT = fastype_of r
wenzelm@5197
   205
  in Const (mk_more_updateC rT (c, snd (dest_recordT rT))) $ x $ r end;
wenzelm@5197
   206
wenzelm@4867
   207
wenzelm@4890
   208
(* make *)
wenzelm@4890
   209
wenzelm@4890
   210
fun mk_makeC rT (c, Ts) = (c, Ts ---> rT);
wenzelm@4890
   211
wenzelm@4890
   212
wenzelm@4867
   213
wenzelm@4867
   214
(** concrete syntax for records **)
wenzelm@4867
   215
wenzelm@4867
   216
(* parse translations *)
wenzelm@4867
   217
wenzelm@5197
   218
fun gen_field_tr mark sfx (t as Const (c, _) $ Free (name, _) $ arg) =
wenzelm@5197
   219
      if c = mark then Syntax.const (suffix sfx name) $ arg
wenzelm@5197
   220
      else raise TERM ("gen_field_tr: " ^ mark, [t])
wenzelm@5197
   221
  | gen_field_tr mark _ t = raise TERM ("gen_field_tr: " ^ mark, [t]);
wenzelm@4867
   222
wenzelm@5197
   223
fun gen_fields_tr sep mark sfx (tm as Const (c, _) $ t $ u) =
wenzelm@5197
   224
      if c = sep then gen_field_tr mark sfx t :: gen_fields_tr sep mark sfx u
wenzelm@5201
   225
      else [gen_field_tr mark sfx tm]
wenzelm@5201
   226
  | gen_fields_tr _ mark sfx tm = [gen_field_tr mark sfx tm];
wenzelm@5197
   227
wenzelm@5197
   228
fun gen_record_tr sep mark sfx unit [t] = foldr (op $) (gen_fields_tr sep mark sfx t, unit)
wenzelm@5201
   229
  | gen_record_tr _ _ _ _ ts = raise TERM ("gen_record_tr", ts);
wenzelm@5197
   230
wenzelm@5197
   231
fun gen_record_scheme_tr sep mark sfx [t, more] = foldr (op $) (gen_fields_tr sep mark sfx t, more)
wenzelm@5201
   232
  | gen_record_scheme_tr _ _ _ ts = raise TERM ("gen_record_scheme_tr", ts);
wenzelm@5197
   233
wenzelm@4867
   234
wenzelm@5197
   235
val record_type_tr = gen_record_tr "_field_types" "_field_type" field_typeN (Syntax.const "unit");
wenzelm@5197
   236
val record_type_scheme_tr = gen_record_scheme_tr "_field_types" "_field_type" field_typeN;
wenzelm@5197
   237
wenzelm@5197
   238
val record_tr = gen_record_tr "_fields" "_field" fieldN HOLogic.unit;
wenzelm@5197
   239
val record_scheme_tr = gen_record_scheme_tr "_fields" "_field" fieldN;
wenzelm@4867
   240
wenzelm@5197
   241
fun record_update_tr [t, u] =
wenzelm@5197
   242
      foldr (op $) (rev (gen_fields_tr "_updates" "_update" updateN u), t)
wenzelm@5197
   243
  | record_update_tr ts = raise TERM ("record_update_tr", ts);
wenzelm@5197
   244
wenzelm@5197
   245
wenzelm@5197
   246
val parse_translation =
wenzelm@5197
   247
 [("_record_type", record_type_tr),
wenzelm@5197
   248
  ("_record_type_scheme", record_type_scheme_tr),
wenzelm@5197
   249
  ("_record", record_tr),
wenzelm@5197
   250
  ("_record_scheme", record_scheme_tr),
wenzelm@5197
   251
  ("_record_update", record_update_tr)];
wenzelm@4867
   252
wenzelm@4867
   253
wenzelm@4890
   254
(* print translations *)
wenzelm@4867
   255
wenzelm@5197
   256
fun gen_fields_tr' mark sfx (tm as Const (name_field, _) $ t $ u) =
wenzelm@5197
   257
      (case try (unsuffix sfx) name_field of
wenzelm@5197
   258
        Some name =>
wenzelm@5197
   259
          apfst (cons (Syntax.const mark $ Syntax.free name $ t)) (gen_fields_tr' mark sfx u)
wenzelm@5197
   260
      | None => ([], tm))
wenzelm@5197
   261
  | gen_fields_tr' _ _ tm = ([], tm);
wenzelm@5197
   262
wenzelm@5197
   263
fun gen_record_tr' sep mark sfx is_unit record record_scheme tm =
wenzelm@4867
   264
  let
wenzelm@5197
   265
    val (ts, u) = gen_fields_tr' mark sfx tm;
wenzelm@5197
   266
    val t' = foldr1 (fn (v, w) => Syntax.const sep $ v $ w) ts;
wenzelm@4867
   267
  in
wenzelm@5197
   268
    if is_unit u then Syntax.const record $ t'
wenzelm@5197
   269
    else Syntax.const record_scheme $ t' $ u
wenzelm@4867
   270
  end;
wenzelm@4867
   271
wenzelm@5197
   272
wenzelm@5197
   273
val record_type_tr' =
wenzelm@5197
   274
  gen_record_tr' "_field_types" "_field_type" field_typeN
wenzelm@5197
   275
    (fn Const ("unit", _) => true | _ => false) "_record_type" "_record_type_scheme";
wenzelm@5197
   276
wenzelm@5197
   277
val record_tr' =
wenzelm@5197
   278
  gen_record_tr' "_fields" "_field" fieldN HOLogic.is_unit "_record" "_record_scheme";
wenzelm@5197
   279
wenzelm@5197
   280
fun record_update_tr' tm =
wenzelm@5197
   281
  let val (ts, u) = gen_fields_tr' "_update" updateN tm in
wenzelm@5197
   282
    Syntax.const "_record_update" $ u $
wenzelm@5197
   283
      foldr1 (fn (v, w) => Syntax.const "_updates" $ v $ w) (rev ts)
wenzelm@5197
   284
  end;
wenzelm@5197
   285
wenzelm@5197
   286
wenzelm@5201
   287
fun gen_field_tr' sfx tr' name =
wenzelm@5201
   288
  let val name_sfx = suffix sfx name
wenzelm@5201
   289
  in (name_sfx, fn [t, u] => tr' (Syntax.const name_sfx $ t $ u) | _ => raise Match) end;
wenzelm@5201
   290
wenzelm@5197
   291
fun print_translation names =
wenzelm@5197
   292
  map (gen_field_tr' field_typeN record_type_tr') names @
wenzelm@5197
   293
  map (gen_field_tr' fieldN record_tr') names @
wenzelm@5197
   294
  map (gen_field_tr' updateN record_update_tr') names;
wenzelm@4867
   295
wenzelm@4867
   296
wenzelm@4867
   297
wenzelm@4867
   298
(*** extend theory by record definition ***)
wenzelm@4867
   299
wenzelm@4867
   300
(** record info **)
wenzelm@4867
   301
wenzelm@4867
   302
(* type record_info and parent_info *)
wenzelm@4867
   303
wenzelm@4867
   304
type record_info =
wenzelm@4867
   305
 {args: (string * sort) list,
wenzelm@4867
   306
  parent: (typ list * string) option,
wenzelm@4867
   307
  fields: (string * typ) list,
wenzelm@4895
   308
  simps: tthm list};
wenzelm@4867
   309
wenzelm@4867
   310
type parent_info =
wenzelm@4867
   311
 {name: string,
wenzelm@4867
   312
  fields: (string * typ) list,
wenzelm@4895
   313
  simps: tthm list};
wenzelm@4867
   314
wenzelm@4867
   315
wenzelm@5052
   316
(* data kind 'HOL/records' *)
wenzelm@5001
   317
wenzelm@5006
   318
structure RecordsArgs =
wenzelm@5006
   319
struct
wenzelm@5006
   320
  val name = "HOL/records";
wenzelm@5698
   321
  type T =
wenzelm@5698
   322
    record_info Symtab.table *				(*records*)
wenzelm@5698
   323
      (thm Symtab.table * Simplifier.simpset);		(*field split rules*)
wenzelm@4867
   324
wenzelm@5698
   325
  val empty = (Symtab.empty, (Symtab.empty, HOL_basic_ss));
wenzelm@5006
   326
  val prep_ext = I;
wenzelm@5698
   327
  fun merge ((recs1, (sps1, ss1)), (recs2, (sps2, ss2))) =
wenzelm@5698
   328
    (Symtab.merge (K true) (recs1, recs2),
wenzelm@5698
   329
      (Symtab.merge (K true) (sps1, sps2), Simplifier.merge_ss (ss1, ss2)));
wenzelm@4867
   330
wenzelm@5698
   331
  fun print sg (recs, _) =
wenzelm@4867
   332
    let
wenzelm@4867
   333
      val prt_typ = Sign.pretty_typ sg;
wenzelm@4867
   334
      val ext_const = Sign.cond_extern sg Sign.constK;
wenzelm@4867
   335
wenzelm@4867
   336
      fun pretty_parent None = []
wenzelm@4867
   337
        | pretty_parent (Some (Ts, name)) =
wenzelm@4867
   338
            [Pretty.block [prt_typ (Type (name, Ts)), Pretty.str " +"]];
wenzelm@4867
   339
wenzelm@4867
   340
      fun pretty_field (c, T) = Pretty.block
wenzelm@4867
   341
        [Pretty.str (ext_const c), Pretty.str " ::", Pretty.brk 1, Pretty.quote (prt_typ T)];
wenzelm@4867
   342
wenzelm@4895
   343
      fun pretty_record (name, {args, parent, fields, simps = _}) = Pretty.block (Pretty.fbreaks
wenzelm@4867
   344
        (Pretty.block [prt_typ (Type (name, map TFree args)), Pretty.str " = "] ::
wenzelm@4867
   345
          pretty_parent parent @ map pretty_field fields));
wenzelm@4867
   346
    in
wenzelm@5698
   347
      seq (Pretty.writeln o pretty_record) (Symtab.dest recs)
wenzelm@4867
   348
    end;
wenzelm@4867
   349
end;
wenzelm@4867
   350
wenzelm@5006
   351
structure RecordsData = TheoryDataFun(RecordsArgs);
wenzelm@5006
   352
val print_records = RecordsData.print;
wenzelm@5006
   353
wenzelm@4867
   354
wenzelm@5698
   355
(* get and put data *)
wenzelm@4867
   356
wenzelm@5698
   357
fun get_record thy name = Symtab.lookup (#1 (RecordsData.get thy), name);
wenzelm@4867
   358
wenzelm@4890
   359
fun put_record name info thy =
wenzelm@5698
   360
  let val (tab, sp) = RecordsData.get thy
wenzelm@5698
   361
  in RecordsData.put (Symtab.update ((name, info), tab), sp) thy end;
wenzelm@5698
   362
wenzelm@5698
   363
fun add_record_splits splits thy =
wenzelm@5698
   364
  let
wenzelm@5698
   365
    val (tab, (sps, ss)) = RecordsData.get thy;
wenzelm@5698
   366
    val simps = map #2 splits;
wenzelm@5698
   367
  in RecordsData.put (tab, (Symtab.extend (sps, splits), Simplifier.addsimps (ss, simps))) thy end;
wenzelm@4867
   368
wenzelm@4867
   369
wenzelm@4867
   370
(* parent records *)
wenzelm@4867
   371
wenzelm@4867
   372
fun inst_record thy (types, name) =
wenzelm@4867
   373
  let
wenzelm@4867
   374
    val sign = Theory.sign_of thy;
wenzelm@4867
   375
    fun err msg = error (msg ^ " parent record " ^ quote name);
wenzelm@4867
   376
wenzelm@4895
   377
    val {args, parent, fields, simps} =
wenzelm@4867
   378
      (case get_record thy name of Some info => info | None => err "Unknown");
wenzelm@4895
   379
    val _ = if length types <> length args then err "Bad number of arguments for" else ();
wenzelm@4867
   380
wenzelm@4867
   381
    fun bad_inst ((x, S), T) =
wenzelm@4867
   382
      if Sign.of_sort sign (T, S) then None else Some x
wenzelm@4867
   383
    val bads = mapfilter bad_inst (args ~~ types);
wenzelm@4867
   384
wenzelm@4867
   385
    val inst = map fst args ~~ types;
wenzelm@4867
   386
    val subst = Term.map_type_tfree (fn (x, _) => the (assoc (inst, x)));
wenzelm@4867
   387
  in
wenzelm@4895
   388
    if not (null bads) then
wenzelm@4867
   389
      err ("Ill-sorted instantiation of " ^ commas bads ^ " in")
wenzelm@4895
   390
    else (apsome (apfst (map subst)) parent, map (apsnd subst) fields, simps)
wenzelm@4867
   391
  end;
wenzelm@4867
   392
wenzelm@4867
   393
fun add_parents thy (None, parents) = parents
wenzelm@4867
   394
  | add_parents thy (Some (types, name), parents) =
wenzelm@4895
   395
      let val (pparent, pfields, psimps) = inst_record thy (types, name)
wenzelm@4895
   396
      in add_parents thy (pparent, {name = name, fields = pfields, simps = psimps} :: parents) end;
wenzelm@4867
   397
wenzelm@4867
   398
wenzelm@4867
   399
wenzelm@5698
   400
(** record field splitting **)
wenzelm@5698
   401
wenzelm@5698
   402
fun record_split_tac i st =
wenzelm@5698
   403
  let
wenzelm@5698
   404
    val (_, (sps, ss)) = RecordsData.get_sg (Thm.sign_of_thm st);
wenzelm@5698
   405
wenzelm@5698
   406
    fun is_fieldT (_, Type (a, [_, _])) = is_some (Symtab.lookup (sps, a))
wenzelm@5698
   407
      | is_fieldT _ = false;
wenzelm@5698
   408
    val params = Logic.strip_params (Library.nth_elem (i - 1, Thm.prems_of st));
wenzelm@5698
   409
  in
wenzelm@5698
   410
    if exists is_fieldT params then Simplifier.full_simp_tac ss i st
wenzelm@5698
   411
    else Seq.empty
wenzelm@5698
   412
  end handle Library.LIST _ => Seq.empty;
wenzelm@5698
   413
wenzelm@5698
   414
val record_split_wrapper = ("record_split_tac", fn tac => record_split_tac ORELSE' tac);
wenzelm@5698
   415
wenzelm@5698
   416
wenzelm@5698
   417
wenzelm@4890
   418
(** internal theory extenders **)
wenzelm@4867
   419
wenzelm@5698
   420
(* field_type_defs *)
wenzelm@5698
   421
wenzelm@5698
   422
fun field_type_def ((thy, simps), (name, tname, vs, T, U)) =
wenzelm@5698
   423
  let
wenzelm@5698
   424
    val full = Sign.full_name (sign_of thy);
wenzelm@5698
   425
    val (thy', {simps = simps', ...}) =
wenzelm@5698
   426
      thy
wenzelm@5698
   427
      |> setmp DatatypePackage.quiet_mode true
wenzelm@5698
   428
        (DatatypePackage.add_datatype_i true [tname]
wenzelm@5698
   429
          [(vs, tname, Syntax.NoSyn, [(name, [T, U], Syntax.NoSyn)])]);
wenzelm@5698
   430
    val thy'' =
wenzelm@5698
   431
      thy'
wenzelm@5698
   432
      |> setmp AxClass.quiet_mode true
wenzelm@5698
   433
        (AxClass.add_inst_arity_i (full tname, [HOLogic.termS, moreS], moreS) [] [] None);
wenzelm@5698
   434
  in (thy'', simps' @ simps) end;
wenzelm@5698
   435
wenzelm@5698
   436
fun field_type_defs args thy = foldl field_type_def ((thy, []), args);
wenzelm@5698
   437
wenzelm@5698
   438
wenzelm@4894
   439
(* field_definitions *)
wenzelm@4867
   440
wenzelm@4894
   441
fun field_definitions fields names zeta moreT more vars named_vars thy =
wenzelm@4890
   442
  let
wenzelm@5698
   443
    val sign = Theory.sign_of thy;
wenzelm@4890
   444
    val base = Sign.base_name;
wenzelm@5698
   445
    val full_path = Sign.full_name_path sign;
wenzelm@4867
   446
wenzelm@4867
   447
wenzelm@4890
   448
    (* prepare declarations and definitions *)
wenzelm@4867
   449
wenzelm@4890
   450
    (*field types*)
wenzelm@4890
   451
    fun mk_fieldT_spec c =
wenzelm@5698
   452
      (suffix raw_fieldN c, suffix field_typeN c,
wenzelm@5698
   453
        ["'a", zeta], TFree ("'a", HOLogic.termS), moreT);
wenzelm@4890
   454
    val fieldT_specs = map (mk_fieldT_spec o base) names;
wenzelm@4890
   455
wenzelm@5698
   456
    (*field constructors*)
wenzelm@4890
   457
    val field_decls = map (mk_fieldC moreT) fields;
wenzelm@4890
   458
wenzelm@4890
   459
    fun mk_field_spec (c, v) =
wenzelm@5698
   460
      mk_field ((c, v), more) :== mk_raw_field ((c, v), more);
wenzelm@4894
   461
    val field_specs = map mk_field_spec named_vars;
wenzelm@4890
   462
wenzelm@4890
   463
    (*field destructors*)
wenzelm@5698
   464
    val dest_decls = map (mk_fstC moreT) fields @ map (mk_sndC moreT) fields;
wenzelm@5698
   465
wenzelm@5698
   466
    fun mk_dest_spec dest f (c, T) =
wenzelm@5698
   467
      let val p = Free ("p", mk_fieldT ((c, T), moreT));
wenzelm@5698
   468
      in dest p :== mk_prod_case (suffix field_typeN c) (f T moreT) p end;
wenzelm@4890
   469
    val dest_specs =
wenzelm@5698
   470
      map (mk_dest_spec mk_fst fst_fn) fields @
wenzelm@5698
   471
      map (mk_dest_spec mk_snd snd_fn) fields;
wenzelm@4890
   472
wenzelm@4890
   473
wenzelm@4890
   474
    (* prepare theorems *)
wenzelm@4894
   475
wenzelm@5698
   476
    (*destructor conversions*)
wenzelm@4890
   477
    fun mk_dest_prop dest dest' (c, v) =
wenzelm@4894
   478
      dest (mk_field ((c, v), more)) === dest' (v, more);
wenzelm@4890
   479
    val dest_props =
wenzelm@4895
   480
      map (mk_dest_prop mk_fst fst) named_vars @
wenzelm@4895
   481
      map (mk_dest_prop mk_snd snd) named_vars;
wenzelm@4890
   482
wenzelm@5698
   483
    (*surjective pairing*)
wenzelm@5698
   484
    fun mk_surj_prop (c, T) =
wenzelm@5698
   485
      let val p = Free ("p", mk_fieldT ((c, T), moreT));
wenzelm@5698
   486
      in p === mk_field ((c, mk_fst p), mk_snd p) end;
wenzelm@5698
   487
    val surj_props = map mk_surj_prop fields;
wenzelm@4890
   488
wenzelm@5698
   489
wenzelm@5698
   490
    (* 1st stage: types_thy *)
wenzelm@5698
   491
wenzelm@5698
   492
    val (types_thy, simps) =
wenzelm@5698
   493
      thy
wenzelm@5698
   494
      |> field_type_defs fieldT_specs;
wenzelm@5698
   495
wenzelm@5698
   496
    val datatype_simps = map Attribute.tthm_of simps;
wenzelm@5698
   497
wenzelm@5698
   498
wenzelm@5698
   499
    (* 2nd stage: defs_thy *)
wenzelm@4890
   500
wenzelm@4890
   501
    val defs_thy =
wenzelm@5698
   502
      types_thy
wenzelm@5698
   503
       |> (Theory.add_consts_i o map (Syntax.no_syn o apfst base))
wenzelm@5698
   504
         (field_decls @ dest_decls)
wenzelm@5698
   505
       |> (PureThy.add_defs_i o map (fn x => (x, [Attribute.tag_internal])))
wenzelm@5698
   506
         (field_specs @ dest_specs);
wenzelm@4890
   507
wenzelm@4890
   508
    val field_defs = get_defs defs_thy field_specs;
wenzelm@4890
   509
    val dest_defs = get_defs defs_thy dest_specs;
wenzelm@4890
   510
wenzelm@4890
   511
wenzelm@5698
   512
    (* 3rd stage: thms_thy *)
wenzelm@5698
   513
wenzelm@5698
   514
    val prove = prove_simp defs_thy;
wenzelm@4890
   515
wenzelm@5698
   516
    val dest_convs = map (prove [] (field_defs @ dest_defs @ datatype_simps)) dest_props;
wenzelm@5698
   517
    val surj_pairs = map (prove [DatatypePackage.induct_tac "p" 1]
wenzelm@5698
   518
      (map (apfst Thm.symmetric) field_defs @ dest_convs)) surj_props;
wenzelm@5698
   519
wenzelm@5698
   520
    fun mk_split th = SplitPairedAll.rule (standard (th RS eq_reflection));
wenzelm@5698
   521
    val splits = map (fn (th, _) => Attribute.tthm_of (mk_split th)) surj_pairs;
wenzelm@4894
   522
wenzelm@4890
   523
    val thms_thy =
wenzelm@4890
   524
      defs_thy
wenzelm@4890
   525
      |> (PureThy.add_tthmss o map Attribute.none)
wenzelm@4890
   526
        [("field_defs", field_defs),
wenzelm@4890
   527
          ("dest_defs", dest_defs),
wenzelm@5698
   528
          ("dest_convs", dest_convs),
wenzelm@5698
   529
          ("surj_pairs", surj_pairs),
wenzelm@5698
   530
          ("splits", splits)];
wenzelm@4890
   531
wenzelm@5698
   532
  in (thms_thy, dest_convs, splits) end;
wenzelm@4890
   533
wenzelm@4890
   534
wenzelm@4890
   535
(* record_definition *)
wenzelm@4867
   536
wenzelm@4867
   537
fun record_definition (args, bname) parent (parents: parent_info list) bfields thy =
wenzelm@4867
   538
  let
wenzelm@4867
   539
    val sign = Theory.sign_of thy;
wenzelm@4867
   540
    val full = Sign.full_name_path sign bname;
wenzelm@4890
   541
    val base = Sign.base_name;
wenzelm@4867
   542
wenzelm@4867
   543
wenzelm@4890
   544
    (* basic components *)
wenzelm@4867
   545
wenzelm@4867
   546
    val alphas = map fst args;
wenzelm@5197
   547
    val name = Sign.full_name sign bname;       (*not made part of record name space!*)
wenzelm@4890
   548
wenzelm@4867
   549
    val parent_fields = flat (map #fields parents);
wenzelm@4890
   550
    val parent_names = map fst parent_fields;
wenzelm@4890
   551
    val parent_types = map snd parent_fields;
wenzelm@4890
   552
    val parent_len = length parent_fields;
wenzelm@4890
   553
    val parent_xs = variantlist (map (base o fst) parent_fields, [moreN]);
wenzelm@4890
   554
    val parent_vars = ListPair.map Free (parent_xs, parent_types);
wenzelm@4894
   555
    val parent_named_vars = parent_names ~~ parent_vars;
wenzelm@4890
   556
wenzelm@4867
   557
    val fields = map (apfst full) bfields;
wenzelm@4890
   558
    val names = map fst fields;
wenzelm@4890
   559
    val types = map snd fields;
wenzelm@4890
   560
    val len = length fields;
wenzelm@4890
   561
    val xs = variantlist (map fst bfields, moreN :: parent_xs);
wenzelm@4890
   562
    val vars = ListPair.map Free (xs, types);
wenzelm@4894
   563
    val named_vars = names ~~ vars;
wenzelm@4867
   564
wenzelm@4867
   565
    val all_fields = parent_fields @ fields;
wenzelm@4890
   566
    val all_names = parent_names @ names;
wenzelm@4890
   567
    val all_types = parent_types @ types;
wenzelm@4890
   568
    val all_len = parent_len + len;
wenzelm@4890
   569
    val all_xs = parent_xs @ xs;
wenzelm@4890
   570
    val all_vars = parent_vars @ vars;
wenzelm@4894
   571
    val all_named_vars = parent_named_vars @ named_vars;
wenzelm@4867
   572
wenzelm@4867
   573
    val zeta = variant alphas "'z";
wenzelm@4867
   574
    val moreT = TFree (zeta, moreS);
wenzelm@4895
   575
    val more = Free (moreN, moreT);
wenzelm@5197
   576
    val full_moreN = full moreN;
wenzelm@5197
   577
    fun more_part t = mk_more t full_moreN;
wenzelm@5197
   578
    fun more_part_update t x = mk_more_update t (full_moreN, x);
wenzelm@4894
   579
wenzelm@4894
   580
    val parent_more = funpow parent_len mk_snd;
wenzelm@4894
   581
    val idxs = 0 upto (len - 1);
wenzelm@4867
   582
wenzelm@4867
   583
    val rec_schemeT = mk_recordT (all_fields, moreT);
wenzelm@4894
   584
    val rec_scheme = mk_record (all_named_vars, more);
wenzelm@4890
   585
    val r = Free ("r", rec_schemeT);
wenzelm@4894
   586
    val recT = mk_recordT (all_fields, HOLogic.unitT);
wenzelm@4867
   587
wenzelm@4867
   588
wenzelm@4890
   589
    (* prepare print translation functions *)
wenzelm@4867
   590
wenzelm@5698
   591
    val field_tr's =
wenzelm@5698
   592
      print_translation (distinct (flat (map NameSpace.accesses (full_moreN :: names))));
wenzelm@4867
   593
wenzelm@4867
   594
wenzelm@4867
   595
    (* prepare declarations *)
wenzelm@4867
   596
wenzelm@5197
   597
    val sel_decls = map (mk_selC rec_schemeT) bfields @
wenzelm@5197
   598
      [mk_moreC rec_schemeT (moreN, moreT)];
wenzelm@5197
   599
    val update_decls = map (mk_updateC rec_schemeT) bfields @
wenzelm@5197
   600
      [mk_more_updateC rec_schemeT (moreN, moreT)];
wenzelm@4890
   601
    val make_decls =
wenzelm@4890
   602
      [(mk_makeC rec_schemeT (make_schemeN, all_types @ [moreT])),
wenzelm@4890
   603
       (mk_makeC recT (makeN, all_types))];
wenzelm@4867
   604
wenzelm@4867
   605
wenzelm@4867
   606
    (* prepare definitions *)
wenzelm@4867
   607
wenzelm@4895
   608
    (*record (scheme) type abbreviation*)
wenzelm@4890
   609
    val recordT_specs =
wenzelm@4890
   610
      [(suffix schemeN bname, alphas @ [zeta], rec_schemeT, Syntax.NoSyn),
wenzelm@4890
   611
        (bname, alphas, recT, Syntax.NoSyn)];
wenzelm@4867
   612
wenzelm@4894
   613
    (*selectors*)
wenzelm@4890
   614
    fun mk_sel_spec (i, c) =
wenzelm@4894
   615
      mk_sel r c :== mk_fst (funpow i mk_snd (parent_more r));
wenzelm@4894
   616
    val sel_specs =
wenzelm@4894
   617
      ListPair.map mk_sel_spec (idxs, names) @
wenzelm@4894
   618
        [more_part r :== funpow len mk_snd (parent_more r)];
wenzelm@4890
   619
wenzelm@4890
   620
    (*updates*)
wenzelm@4894
   621
    val all_sels = all_names ~~ map (mk_sel r) all_names;
wenzelm@4890
   622
    fun mk_upd_spec (i, (c, x)) =
wenzelm@4894
   623
      mk_update r (c, x) :==
wenzelm@4894
   624
        mk_record (nth_update (c, x) (parent_len + i, all_sels), more_part r)
wenzelm@5197
   625
    val update_specs =
wenzelm@5197
   626
      ListPair.map mk_upd_spec (idxs, named_vars) @
wenzelm@5197
   627
        [more_part_update r more :== mk_record (all_sels, more)];
wenzelm@4867
   628
wenzelm@4867
   629
    (*makes*)
wenzelm@4890
   630
    val make_scheme = Const (mk_makeC rec_schemeT (full make_schemeN, all_types @ [moreT]));
wenzelm@4890
   631
    val make = Const (mk_makeC recT (full makeN, all_types));
wenzelm@4867
   632
    val make_specs =
wenzelm@4894
   633
      [list_comb (make_scheme, all_vars) $ more :== rec_scheme,
wenzelm@4894
   634
        list_comb (make, all_vars) :== mk_record (all_named_vars, HOLogic.unit)];
wenzelm@4894
   635
wenzelm@4894
   636
wenzelm@4894
   637
    (* prepare propositions *)
wenzelm@4894
   638
wenzelm@4894
   639
    (*selectors*)
wenzelm@4894
   640
    val sel_props =
wenzelm@4894
   641
      map (fn (c, x) => mk_sel rec_scheme c === x) named_vars @
wenzelm@4894
   642
        [more_part rec_scheme === more];
wenzelm@4894
   643
wenzelm@4894
   644
    (*updates*)
wenzelm@4894
   645
    fun mk_upd_prop (i, (c, T)) =
wenzelm@4894
   646
      let val x' = Free (variant all_xs (base c ^ "'"), T) in
wenzelm@4894
   647
        mk_update rec_scheme (c, x') ===
wenzelm@4894
   648
          mk_record (nth_update (c, x') (parent_len + i, all_named_vars), more)
wenzelm@4894
   649
      end;
wenzelm@5197
   650
    val update_props =
wenzelm@5197
   651
      ListPair.map mk_upd_prop (idxs, fields) @
wenzelm@5197
   652
        let val more' = Free (variant all_xs (moreN ^ "'"), moreT)
wenzelm@5197
   653
        in [more_part_update rec_scheme more' === mk_record (all_named_vars, more')] end;
wenzelm@4867
   654
wenzelm@4867
   655
wenzelm@4890
   656
    (* 1st stage: fields_thy *)
wenzelm@4867
   657
wenzelm@5698
   658
    val (fields_thy, field_simps, splits) =
wenzelm@4867
   659
      thy
wenzelm@4867
   660
      |> Theory.add_path bname
wenzelm@4894
   661
      |> field_definitions fields names zeta moreT more vars named_vars;
wenzelm@4867
   662
wenzelm@5698
   663
    val field_splits = map2 (fn (c, (th, _)) => (suffix field_typeN c, th)) (names, splits);
wenzelm@5698
   664
wenzelm@4867
   665
wenzelm@4890
   666
    (* 2nd stage: defs_thy *)
wenzelm@4890
   667
wenzelm@4890
   668
    val defs_thy =
wenzelm@4890
   669
      fields_thy
wenzelm@4890
   670
      |> Theory.parent_path
wenzelm@5197
   671
      |> Theory.add_tyabbrs_i recordT_specs     (*not made part of record name space!*)
wenzelm@4890
   672
      |> Theory.add_path bname
wenzelm@5197
   673
      |> Theory.add_trfuns ([], [], field_tr's, [])
wenzelm@4894
   674
      |> (Theory.add_consts_i o map Syntax.no_syn)
wenzelm@4894
   675
        (sel_decls @ update_decls @ make_decls)
wenzelm@5197
   676
      |> (PureThy.add_defs_i o map (fn x => (x, [Attribute.tag_internal])))
wenzelm@5212
   677
        (sel_specs @ update_specs)
wenzelm@5212
   678
      |> (PureThy.add_defs_i o map Attribute.none) make_specs;
wenzelm@4890
   679
wenzelm@4890
   680
    val sel_defs = get_defs defs_thy sel_specs;
wenzelm@4890
   681
    val update_defs = get_defs defs_thy update_specs;
wenzelm@4890
   682
    val make_defs = get_defs defs_thy make_specs;
wenzelm@4890
   683
wenzelm@4890
   684
wenzelm@4890
   685
    (* 3rd stage: thms_thy *)
wenzelm@4890
   686
wenzelm@4895
   687
    val parent_simps = flat (map #simps parents);
wenzelm@5698
   688
    val prove = prove_simp defs_thy [];
wenzelm@4890
   689
wenzelm@4895
   690
    val sel_convs = map (prove (parent_simps @ sel_defs @ field_simps)) sel_props;
wenzelm@4895
   691
    val update_convs = map (prove (parent_simps @ update_defs @ sel_convs)) update_props;
wenzelm@4894
   692
wenzelm@4894
   693
    val simps = field_simps @ sel_convs @ update_convs @ make_defs;
wenzelm@4867
   694
wenzelm@4867
   695
    val thms_thy =
wenzelm@4867
   696
      defs_thy
wenzelm@4867
   697
      |> (PureThy.add_tthmss o map Attribute.none)
wenzelm@4895
   698
        [("select_defs", sel_defs),
wenzelm@4890
   699
          ("update_defs", update_defs),
wenzelm@4894
   700
          ("make_defs", make_defs),
wenzelm@4895
   701
          ("select_convs", sel_convs),
wenzelm@4894
   702
          ("update_convs", update_convs)]
wenzelm@4894
   703
      |> PureThy.add_tthmss [(("simps", simps), [Simplifier.simp_add_global])];
wenzelm@4867
   704
wenzelm@4867
   705
wenzelm@4890
   706
    (* 4th stage: final_thy *)
wenzelm@4867
   707
wenzelm@4867
   708
    val final_thy =
wenzelm@4867
   709
      thms_thy
wenzelm@4895
   710
      |> put_record name {args = args, parent = parent, fields = fields, simps = simps}
wenzelm@5698
   711
      |> add_record_splits field_splits
wenzelm@4867
   712
      |> Theory.parent_path;
wenzelm@4867
   713
wenzelm@4867
   714
  in final_thy end;
wenzelm@4867
   715
wenzelm@4867
   716
wenzelm@4867
   717
wenzelm@4867
   718
(** theory extender interface **)
wenzelm@4867
   719
wenzelm@4867
   720
(* prepare arguments *)
wenzelm@4867
   721
wenzelm@4894
   722
(*note: read_raw_typ avoids expanding type abbreviations*)
wenzelm@4867
   723
fun read_raw_parent sign s =
wenzelm@4867
   724
  (case Sign.read_raw_typ (sign, K None) s handle TYPE (msg, _, _) => error msg of
wenzelm@4867
   725
    Type (name, Ts) => (Ts, name)
wenzelm@4867
   726
  | _ => error ("Bad parent record specification: " ^ quote s));
wenzelm@4867
   727
wenzelm@4867
   728
fun read_typ sign (env, s) =
wenzelm@4867
   729
  let
wenzelm@5060
   730
    fun def_sort (x, ~1) = assoc (env, x)
wenzelm@5060
   731
      | def_sort _ = None;
wenzelm@5060
   732
    val T = Type.no_tvars (Sign.read_typ (sign, def_sort) s) handle TYPE (msg, _, _) => error msg;
wenzelm@4867
   733
  in (Term.add_typ_tfrees (T, env), T) end;
wenzelm@4867
   734
wenzelm@4867
   735
fun cert_typ sign (env, raw_T) =
wenzelm@4867
   736
  let val T = Type.no_tvars (Sign.certify_typ sign raw_T) handle TYPE (msg, _, _) => error msg
wenzelm@4867
   737
  in (Term.add_typ_tfrees (T, env), T) end;
wenzelm@4867
   738
wenzelm@4867
   739
wenzelm@4867
   740
(* add_record *)
wenzelm@4867
   741
wenzelm@4895
   742
(*we do all preparations and error checks here, deferring the real
wenzelm@4895
   743
  work to record_definition*)
wenzelm@4890
   744
wenzelm@4867
   745
fun gen_add_record prep_typ prep_raw_parent (params, bname) raw_parent raw_fields thy =
wenzelm@4867
   746
  let
paulson@4970
   747
    val _ = Theory.requires thy "Record" "record definitions";
wenzelm@4867
   748
    val sign = Theory.sign_of thy;
wenzelm@5698
   749
    val _ = message ("Defining record " ^ quote bname ^ " ...");
wenzelm@4867
   750
wenzelm@4867
   751
wenzelm@4867
   752
    (* parents *)
wenzelm@4867
   753
wenzelm@4867
   754
    fun prep_inst T = snd (cert_typ sign ([], T));
wenzelm@4867
   755
wenzelm@4867
   756
    val parent = apsome (apfst (map prep_inst) o prep_raw_parent sign) raw_parent
wenzelm@4867
   757
      handle ERROR => error ("The error(s) above in parent record specification");
wenzelm@4867
   758
    val parents = add_parents thy (parent, []);
wenzelm@4867
   759
wenzelm@4867
   760
    val init_env =
wenzelm@4867
   761
      (case parent of
wenzelm@4867
   762
        None => []
wenzelm@4867
   763
      | Some (types, _) => foldr Term.add_typ_tfrees (types, []));
wenzelm@4867
   764
wenzelm@4867
   765
wenzelm@4867
   766
    (* fields *)
wenzelm@4867
   767
wenzelm@4967
   768
    fun prep_field (env, (c, raw_T)) =
wenzelm@4967
   769
      let val (env', T) = prep_typ sign (env, raw_T) handle ERROR =>
wenzelm@4967
   770
        error ("The error(s) above occured in field " ^ quote c)
wenzelm@4967
   771
      in (env', (c, T)) end;
wenzelm@4867
   772
wenzelm@4967
   773
    val (envir, bfields) = foldl_map prep_field (init_env, raw_fields);
wenzelm@4867
   774
    val envir_names = map fst envir;
wenzelm@4867
   775
wenzelm@4867
   776
wenzelm@4867
   777
    (* args *)
wenzelm@4867
   778
wenzelm@4867
   779
    val defaultS = Sign.defaultS sign;
wenzelm@4867
   780
    val args = map (fn x => (x, if_none (assoc (envir, x)) defaultS)) params;
wenzelm@4867
   781
wenzelm@4867
   782
wenzelm@4867
   783
    (* errors *)
wenzelm@4867
   784
wenzelm@4890
   785
    val name = Sign.full_name sign bname;
wenzelm@4890
   786
    val err_dup_record =
wenzelm@4890
   787
      if is_none (get_record thy name) then []
wenzelm@4890
   788
      else ["Duplicate definition of record " ^ quote name];
wenzelm@4890
   789
wenzelm@4867
   790
    val err_dup_parms =
wenzelm@4867
   791
      (case duplicates params of
wenzelm@4867
   792
        [] => []
wenzelm@4890
   793
      | dups => ["Duplicate parameter(s) " ^ commas dups]);
wenzelm@4867
   794
wenzelm@4867
   795
    val err_extra_frees =
wenzelm@4867
   796
      (case gen_rems (op =) (envir_names, params) of
wenzelm@4867
   797
        [] => []
wenzelm@4890
   798
      | extras => ["Extra free type variable(s) " ^ commas extras]);
wenzelm@4867
   799
wenzelm@4890
   800
    val err_no_fields = if null bfields then ["No fields present"] else [];
wenzelm@4867
   801
wenzelm@4867
   802
    val err_dup_fields =
wenzelm@4867
   803
      (case duplicates (map fst bfields) of
wenzelm@4867
   804
        [] => []
wenzelm@4890
   805
      | dups => ["Duplicate field(s) " ^ commas_quote dups]);
wenzelm@4890
   806
wenzelm@4890
   807
    val err_bad_fields =
wenzelm@4890
   808
      if forall (not_equal moreN o fst) bfields then []
wenzelm@4890
   809
      else ["Illegal field name " ^ quote moreN];
wenzelm@4867
   810
wenzelm@4867
   811
    val err_dup_sorts =
wenzelm@4867
   812
      (case duplicates envir_names of
wenzelm@4867
   813
        [] => []
wenzelm@4867
   814
      | dups => ["Inconsistent sort constraints for " ^ commas dups]);
wenzelm@4867
   815
wenzelm@4867
   816
    val errs =
wenzelm@4890
   817
      err_dup_record @ err_dup_parms @ err_extra_frees @ err_no_fields @
wenzelm@4890
   818
      err_dup_fields @ err_bad_fields @ err_dup_sorts;
wenzelm@4867
   819
  in
wenzelm@4890
   820
    if null errs then () else error (cat_lines errs);
wenzelm@4867
   821
    thy |> record_definition (args, bname) parent parents bfields
wenzelm@4867
   822
  end
wenzelm@4867
   823
  handle ERROR => error ("Failed to define record " ^ quote bname);
wenzelm@4867
   824
wenzelm@4867
   825
val add_record = gen_add_record read_typ read_raw_parent;
wenzelm@4867
   826
val add_record_i = gen_add_record cert_typ (K I);
wenzelm@4867
   827
wenzelm@4867
   828
wenzelm@4867
   829
wenzelm@4867
   830
(** setup theory **)
wenzelm@4867
   831
wenzelm@5698
   832
fun add_wrapper wrapper thy =
wenzelm@5698
   833
  let val r = claset_ref_of thy
wenzelm@5698
   834
  in r := ! r addSWrapper wrapper; thy end;
wenzelm@5698
   835
wenzelm@4867
   836
val setup =
wenzelm@5006
   837
 [RecordsData.init,
wenzelm@5698
   838
  Theory.add_trfuns ([], parse_translation, [], []),
wenzelm@5698
   839
  add_wrapper record_split_wrapper];
wenzelm@4867
   840
wenzelm@4867
   841
wenzelm@4867
   842
end;
wenzelm@5698
   843
wenzelm@5698
   844
wenzelm@5698
   845
structure BasicRecordPackage: BASIC_RECORD_PACKAGE = RecordPackage;
wenzelm@5698
   846
open BasicRecordPackage;