src/HOL/Tools/record_package.ML
author wenzelm
Sat Jan 14 22:25:34 2006 +0100 (2006-01-14)
changeset 18688 abf0f018b5ec
parent 18678 dd0c569fa43d
child 18708 4b3dadb4fe33
permissions -rw-r--r--
generic attributes;
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(*  Title:      HOL/Tools/record_package.ML
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    ID:         $Id$
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    Author:     Wolfgang Naraschewski, Norbert Schirmer and Markus Wenzel, TU Muenchen
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Extensible records with structural subtyping in HOL.
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*)
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signature BASIC_RECORD_PACKAGE =
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sig
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  val record_simproc: simproc
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  val record_eq_simproc: simproc
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  val record_upd_simproc: simproc
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  val record_split_simproc: (term -> int) -> simproc
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  val record_ex_sel_eq_simproc: simproc
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  val record_split_tac: int -> tactic
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  val record_split_simp_tac: thm list -> (term -> int) -> int -> tactic
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  val record_split_name: string
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  val record_split_wrapper: string * wrapper
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  val print_record_type_abbr: bool ref
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  val print_record_type_as_fields: bool ref
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end;
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signature RECORD_PACKAGE =
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sig
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  include BASIC_RECORD_PACKAGE
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  val quiet_mode: bool ref
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  val record_quick_and_dirty_sensitive: bool ref
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  val updateN: string
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  val ext_typeN: string
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  val last_extT: typ -> (string * typ list) option
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  val dest_recTs : typ -> (string * typ list) list
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  val get_extT_fields:  theory -> typ -> ((string * typ) list * (string * typ))
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  val get_recT_fields:  theory -> typ -> ((string * typ) list * (string * typ))
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  val get_extension: theory -> Symtab.key -> (string * typ list) option
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  val get_extinjects: theory -> thm list
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  val get_simpset: theory -> simpset
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  val print_records: theory -> unit
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  val add_record: string list * string -> string option -> (string * string * mixfix) list
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    -> theory -> theory
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  val add_record_i: string list * string -> (typ list * string) option
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    -> (string * typ * mixfix) list -> theory -> theory
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  val setup: (theory -> theory) list
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end;
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structure RecordPackage: RECORD_PACKAGE =
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struct
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val rec_UNIV_I = thm "rec_UNIV_I";
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val rec_True_simp = thm "rec_True_simp";
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val Pair_eq = thm "Product_Type.Pair_eq";
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val atomize_all = thm "HOL.atomize_all";
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val atomize_imp = thm "HOL.atomize_imp";
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val meta_allE = thm "Pure.meta_allE";
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val prop_subst = thm "prop_subst";
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val Pair_sel_convs = [fst_conv,snd_conv];
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(** name components **)
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val rN = "r";
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val wN = "w";
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val moreN = "more";
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val schemeN = "_scheme";
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val ext_typeN = "_ext_type";
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val extN ="_ext";
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val casesN = "_cases";
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val ext_dest = "_sel";
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val updateN = "_update";
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val updN = "_upd";
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val schemeN = "_scheme";
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val makeN = "make";
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val fields_selN = "fields";
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val extendN = "extend";
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val truncateN = "truncate";
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(*see typedef_package.ML*)
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val RepN = "Rep_";
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val AbsN = "Abs_";
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(*** utilities ***)
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fun but_last xs = fst (split_last xs);
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(* messages *)
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val quiet_mode = ref false;
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fun message s = if ! quiet_mode then () else writeln s;
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(* timing *)
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fun timeit_msg s x = if !timing then (warning s; timeit x) else x ();
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fun timing_msg s = if !timing then warning s else ();
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(* syntax *)
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fun prune n xs = Library.drop (n, xs);
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fun prefix_base s = NameSpace.map_base (fn bname => s ^ bname);
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val Trueprop = HOLogic.mk_Trueprop;
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fun All xs t = Term.list_all_free (xs, t);
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infix 9 $$;
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infix 0 :== ===;
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infixr 0 ==>;
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val (op $$) = Term.list_comb;
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val (op :==) = Logic.mk_defpair;
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val (op ===) = Trueprop o HOLogic.mk_eq;
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val (op ==>) = Logic.mk_implies;
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(* morphisms *)
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fun mk_RepN name = suffix ext_typeN (prefix_base RepN name);
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fun mk_AbsN name = suffix ext_typeN (prefix_base AbsN name);
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fun mk_Rep name repT absT  =
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  Const (suffix ext_typeN (prefix_base RepN name),absT --> repT);
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fun mk_Abs name repT absT =
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  Const (mk_AbsN name,repT --> absT);
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(* constructor *)
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fun mk_extC (name,T) Ts  = (suffix extN name, Ts ---> T);
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fun mk_ext (name,T) ts =
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  let val Ts = map fastype_of ts
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  in list_comb (Const (mk_extC (name,T) Ts),ts) end;
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(* cases *)
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fun mk_casesC (name,T,vT) Ts = (suffix casesN name, (Ts ---> vT) --> T --> vT)
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fun mk_cases (name,T,vT) f =
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  let val Ts = binder_types (fastype_of f)
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  in Const (mk_casesC (name,T,vT) Ts) $ f end;
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(* selector *)
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fun mk_selC sT (c,T) = (c,sT --> T);
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fun mk_sel s (c,T) =
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  let val sT = fastype_of s
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  in Const (mk_selC sT (c,T)) $ s end;
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(* updates *)
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fun mk_updC sfx sT (c,T) = (suffix sfx c, T --> sT --> sT);
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fun mk_upd sfx c v s =
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  let val sT = fastype_of s;
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      val vT = fastype_of v;
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  in Const (mk_updC sfx sT (c, vT)) $ v $ s end;
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(* types *)
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fun dest_recT (typ as Type (c_ext_type, Ts as (T::_))) =
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      (case try (unsuffix ext_typeN) c_ext_type of
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        NONE => raise TYPE ("RecordPackage.dest_recT", [typ], [])
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      | SOME c => ((c, Ts), List.last Ts))
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  | dest_recT typ = raise TYPE ("RecordPackage.dest_recT", [typ], []);
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fun is_recT T =
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  (case try dest_recT T of NONE => false | SOME _ => true);
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fun dest_recTs T =
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  let val ((c, Ts), U) = dest_recT T
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  in (c, Ts) :: dest_recTs U
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  end handle TYPE _ => [];
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fun last_extT T =
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  let val ((c, Ts), U) = dest_recT T
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  in (case last_extT U of
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        NONE => SOME (c,Ts)
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      | SOME l => SOME l)
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  end handle TYPE _ => NONE
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fun rec_id i T =
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  let val rTs = dest_recTs T
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      val rTs' = if i < 0 then rTs else Library.take (i,rTs)
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  in Library.foldl (fn (s,(c,T)) => s ^ c) ("",rTs') end;
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(*** extend theory by record definition ***)
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(** record info **)
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(* type record_info and parent_info  *)
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type record_info =
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 {args: (string * sort) list,
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  parent: (typ list * string) option,
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  fields: (string * typ) list,
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  extension: (string * typ list),
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  induct: thm
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 };
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fun make_record_info args parent fields extension induct =
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 {args = args, parent = parent, fields = fields, extension = extension,
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  induct = induct}: record_info;
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type parent_info =
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 {name: string,
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  fields: (string * typ) list,
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  extension: (string * typ list),
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  induct: thm
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};
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fun make_parent_info name fields extension induct =
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 {name = name, fields = fields, extension = extension, induct = induct}: parent_info;
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(* data kind 'HOL/record' *)
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type record_data =
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 {records: record_info Symtab.table,
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  sel_upd:
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   {selectors: unit Symtab.table,
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    updates: string Symtab.table,
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    simpset: Simplifier.simpset},
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  equalities: thm Symtab.table,
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  extinjects: thm list,
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  extsplit: thm Symtab.table, (* maps extension name to split rule *)
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  splits: (thm*thm*thm*thm) Symtab.table,    (* !!,!,EX - split-equalities,induct rule *)
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  extfields: (string*typ) list Symtab.table, (* maps extension to its fields *)
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  fieldext: (string*typ list) Symtab.table   (* maps field to its extension *)
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};
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fun make_record_data
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      records sel_upd equalities extinjects extsplit splits extfields fieldext =
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 {records = records, sel_upd = sel_upd,
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  equalities = equalities, extinjects=extinjects, extsplit = extsplit, splits = splits,
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  extfields = extfields, fieldext = fieldext }: record_data;
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structure RecordsData = TheoryDataFun
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(struct
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  val name = "HOL/records";
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  type T = record_data;
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  val empty =
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    make_record_data Symtab.empty
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      {selectors = Symtab.empty, updates = Symtab.empty, simpset = HOL_basic_ss}
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       Symtab.empty [] Symtab.empty Symtab.empty Symtab.empty Symtab.empty;
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  val copy = I;
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  val extend = I;
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  fun merge _
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   ({records = recs1,
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     sel_upd = {selectors = sels1, updates = upds1, simpset = ss1},
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     equalities = equalities1,
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     extinjects = extinjects1,
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     extsplit = extsplit1,
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     splits = splits1,
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     extfields = extfields1,
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     fieldext = fieldext1},
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    {records = recs2,
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     sel_upd = {selectors = sels2, updates = upds2, simpset = ss2},
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     equalities = equalities2,
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     extinjects = extinjects2,
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     extsplit = extsplit2,
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     splits = splits2,
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     extfields = extfields2,
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     fieldext = fieldext2}) =
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    make_record_data
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      (Symtab.merge (K true) (recs1, recs2))
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      {selectors = Symtab.merge (K true) (sels1, sels2),
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        updates = Symtab.merge (K true) (upds1, upds2),
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        simpset = Simplifier.merge_ss (ss1, ss2)}
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      (Symtab.merge Thm.eq_thm (equalities1, equalities2))
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      (gen_merge_lists Thm.eq_thm extinjects1 extinjects2)
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      (Symtab.merge Thm.eq_thm (extsplit1,extsplit2))
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      (Symtab.merge (fn ((a,b,c,d),(w,x,y,z))
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                     => Thm.eq_thm (a,w) andalso Thm.eq_thm (b,x) andalso
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                        Thm.eq_thm (c,y) andalso Thm.eq_thm (d,z))
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                    (splits1, splits2))
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      (Symtab.merge (K true) (extfields1,extfields2))
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      (Symtab.merge (K true) (fieldext1,fieldext2));
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  fun print sg ({records = recs, ...}: record_data) =
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    let
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      val prt_typ = Sign.pretty_typ sg;
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      fun pretty_parent NONE = []
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        | pretty_parent (SOME (Ts, name)) =
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            [Pretty.block [prt_typ (Type (name, Ts)), Pretty.str " +"]];
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      fun pretty_field (c, T) = Pretty.block
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        [Pretty.str (Sign.extern_const sg c), Pretty.str " ::",
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          Pretty.brk 1, Pretty.quote (prt_typ T)];
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      fun pretty_record (name, {args, parent, fields, ...}: record_info) =
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        Pretty.block (Pretty.fbreaks (Pretty.block
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          [prt_typ (Type (name, map TFree args)), Pretty.str " = "] ::
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          pretty_parent parent @ map pretty_field fields));
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    in map pretty_record (Symtab.dest recs) |> Pretty.chunks |> Pretty.writeln end;
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end);
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val print_records = RecordsData.print;
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(* access 'records' *)
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val get_record = Symtab.lookup o #records o RecordsData.get;
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fun put_record name info thy =
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  let
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    val {records, sel_upd, equalities, extinjects,extsplit,splits,extfields,fieldext} =
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          RecordsData.get thy;
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    val data = make_record_data (Symtab.update (name, info) records)
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      sel_upd equalities extinjects extsplit splits extfields fieldext;
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  in RecordsData.put data thy end;
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(* access 'sel_upd' *)
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val get_sel_upd = #sel_upd o RecordsData.get;
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val is_selector = Symtab.defined o #selectors o get_sel_upd;
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val get_updates = Symtab.lookup o #updates o get_sel_upd;
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fun get_simpset thy = Simplifier.theory_context thy (#simpset (get_sel_upd thy));
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fun put_sel_upd names simps thy =
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  let
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    val sels = map (rpair ()) names;
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    val upds = map (suffix updateN) names ~~ names;
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    val {records, sel_upd = {selectors, updates, simpset},
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      equalities, extinjects, extsplit, splits, extfields,fieldext} = RecordsData.get thy;
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    val data = make_record_data records
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      {selectors = Symtab.extend (selectors, sels),
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        updates = Symtab.extend (updates, upds),
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        simpset = Simplifier.addsimps (simpset, simps)}
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       equalities extinjects extsplit splits extfields fieldext;
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  in RecordsData.put data thy end;
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(* access 'equalities' *)
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fun add_record_equalities name thm thy =
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  let
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    val {records, sel_upd, equalities, extinjects, extsplit, splits, extfields,fieldext} =
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   341
          RecordsData.get thy;
wenzelm@17261
   342
    val data = make_record_data records sel_upd
wenzelm@17412
   343
           (Symtab.update_new (name, thm) equalities) extinjects extsplit
schirmer@15015
   344
           splits extfields fieldext;
berghofe@14079
   345
  in RecordsData.put data thy end;
berghofe@14079
   346
wenzelm@17412
   347
val get_equalities =Symtab.lookup o #equalities o RecordsData.get;
berghofe@14079
   348
schirmer@15015
   349
(* access 'extinjects' *)
schirmer@15015
   350
schirmer@15015
   351
fun add_extinjects thm thy =
schirmer@15015
   352
  let
wenzelm@17261
   353
    val {records, sel_upd, equalities, extinjects, extsplit, splits, extfields,fieldext} =
schirmer@15015
   354
          RecordsData.get thy;
wenzelm@17261
   355
    val data = make_record_data records sel_upd equalities (extinjects@[thm]) extsplit
schirmer@15015
   356
                 splits extfields fieldext;
schirmer@15015
   357
  in RecordsData.put data thy end;
schirmer@15015
   358
wenzelm@16458
   359
fun get_extinjects sg = #extinjects (RecordsData.get sg);
schirmer@15015
   360
schirmer@15015
   361
(* access 'extsplit' *)
schirmer@15015
   362
schirmer@15015
   363
fun add_extsplit name thm thy =
schirmer@15015
   364
  let
wenzelm@17261
   365
    val {records, sel_upd, equalities, extinjects, extsplit, splits, extfields,fieldext} =
schirmer@15015
   366
          RecordsData.get thy;
wenzelm@17261
   367
    val data = make_record_data records sel_upd
wenzelm@17412
   368
      equalities extinjects (Symtab.update_new (name, thm) extsplit) splits
schirmer@15015
   369
      extfields fieldext;
schirmer@15015
   370
  in RecordsData.put data thy end;
schirmer@15015
   371
wenzelm@17412
   372
val get_extsplit = Symtab.lookup o #extsplit o RecordsData.get;
schirmer@15015
   373
schirmer@14255
   374
(* access 'splits' *)
schirmer@14255
   375
schirmer@14255
   376
fun add_record_splits name thmP thy =
schirmer@14255
   377
  let
wenzelm@17261
   378
    val {records, sel_upd, equalities, extinjects, extsplit, splits, extfields,fieldext} =
schirmer@15015
   379
          RecordsData.get thy;
wenzelm@17261
   380
    val data = make_record_data records sel_upd
wenzelm@17412
   381
      equalities extinjects extsplit (Symtab.update_new (name, thmP) splits)
schirmer@15015
   382
      extfields fieldext;
schirmer@14255
   383
  in RecordsData.put data thy end;
schirmer@14255
   384
wenzelm@17412
   385
val get_splits = Symtab.lookup o #splits o RecordsData.get;
schirmer@14255
   386
schirmer@15015
   387
schirmer@15015
   388
schirmer@14700
   389
(* extension of a record name *)
wenzelm@17261
   390
val get_extension =
wenzelm@17412
   391
  Option.map #extension oo (Symtab.lookup o #records o RecordsData.get);
wenzelm@17261
   392
berghofe@14079
   393
schirmer@14700
   394
(* access 'extfields' *)
schirmer@14700
   395
schirmer@14700
   396
fun add_extfields name fields thy =
schirmer@14700
   397
  let
wenzelm@17261
   398
    val {records, sel_upd, equalities, extinjects, extsplit,splits, extfields, fieldext} =
schirmer@15015
   399
          RecordsData.get thy;
wenzelm@17261
   400
    val data = make_record_data records sel_upd
wenzelm@17261
   401
         equalities extinjects extsplit splits
wenzelm@17412
   402
         (Symtab.update_new (name, fields) extfields) fieldext;
schirmer@14700
   403
  in RecordsData.put data thy end;
schirmer@14700
   404
wenzelm@17412
   405
val get_extfields = Symtab.lookup o #extfields o RecordsData.get;
schirmer@14700
   406
wenzelm@17261
   407
fun get_extT_fields sg T =
schirmer@15059
   408
  let
schirmer@15059
   409
    val ((name,Ts),moreT) = dest_recT T;
wenzelm@17261
   410
    val recname = let val (nm::recn::rst) = rev (NameSpace.unpack name)
schirmer@15059
   411
                  in NameSpace.pack (rev (nm::rst)) end;
schirmer@15059
   412
    val midx = maxidx_of_typs (moreT::Ts);
schirmer@15059
   413
    fun varify (a, S) = TVar ((a, midx), S);
schirmer@15059
   414
    val varifyT = map_type_tfree varify;
wenzelm@16458
   415
    val {records,extfields,...} = RecordsData.get sg;
wenzelm@17412
   416
    val (flds,(more,_)) = split_last (Symtab.lookup_multi extfields name);
wenzelm@17412
   417
    val args = map varifyT (snd (#extension (the (Symtab.lookup records recname))));
schirmer@15058
   418
wenzelm@16934
   419
    val (subst,_) = fold (Sign.typ_unify sg) (but_last args ~~ but_last Ts) (Vartab.empty,0);
schirmer@15059
   420
    val flds' = map (apsnd ((Envir.norm_type subst) o varifyT)) flds;
schirmer@15059
   421
  in (flds',(more,moreT)) end;
schirmer@15058
   422
wenzelm@17261
   423
fun get_recT_fields sg T =
wenzelm@17261
   424
  let
schirmer@15059
   425
    val (root_flds,(root_more,root_moreT)) = get_extT_fields sg T;
wenzelm@17261
   426
    val (rest_flds,rest_more) =
wenzelm@17261
   427
           if is_recT root_moreT then get_recT_fields sg root_moreT
schirmer@15059
   428
           else ([],(root_more,root_moreT));
schirmer@15059
   429
  in (root_flds@rest_flds,rest_more) end;
schirmer@15059
   430
schirmer@15058
   431
schirmer@14700
   432
(* access 'fieldext' *)
schirmer@14700
   433
schirmer@14700
   434
fun add_fieldext extname_types fields thy =
schirmer@14700
   435
  let
wenzelm@17261
   436
    val {records, sel_upd, equalities, extinjects, extsplit, splits, extfields, fieldext} =
schirmer@15015
   437
           RecordsData.get thy;
wenzelm@17261
   438
    val fieldext' =
wenzelm@17412
   439
      fold (fn field => Symtab.update_new (field, extname_types)) fields fieldext;
wenzelm@17261
   440
    val data=make_record_data records sel_upd equalities extinjects extsplit
schirmer@15015
   441
              splits extfields fieldext';
schirmer@14700
   442
  in RecordsData.put data thy end;
schirmer@14700
   443
schirmer@14700
   444
wenzelm@17412
   445
val get_fieldext = Symtab.lookup o #fieldext o RecordsData.get;
schirmer@14700
   446
wenzelm@4867
   447
(* parent records *)
wenzelm@4867
   448
skalberg@15531
   449
fun add_parents thy NONE parents = parents
skalberg@15531
   450
  | add_parents thy (SOME (types, name)) parents =
wenzelm@12247
   451
      let
wenzelm@12247
   452
        val sign = Theory.sign_of thy;
wenzelm@12247
   453
        fun err msg = error (msg ^ " parent record " ^ quote name);
wenzelm@12255
   454
schirmer@14700
   455
        val {args, parent, fields, extension, induct} =
skalberg@15531
   456
          (case get_record thy name of SOME info => info | NONE => err "Unknown");
wenzelm@12247
   457
        val _ = if length types <> length args then err "Bad number of arguments for" else ();
wenzelm@12255
   458
wenzelm@12247
   459
        fun bad_inst ((x, S), T) =
skalberg@15531
   460
          if Sign.of_sort sign (T, S) then NONE else SOME x
skalberg@15570
   461
        val bads = List.mapPartial bad_inst (args ~~ types);
wenzelm@12255
   462
wenzelm@12247
   463
        val inst = map fst args ~~ types;
haftmann@17377
   464
        val subst = Term.map_type_tfree (the o AList.lookup (op =) inst o fst);
skalberg@15570
   465
        val parent' = Option.map (apfst (map subst)) parent;
wenzelm@12247
   466
        val fields' = map (apsnd subst) fields;
schirmer@14700
   467
        val extension' = apsnd (map subst) extension;
wenzelm@12247
   468
      in
wenzelm@12255
   469
        conditional (not (null bads)) (fn () =>
wenzelm@12255
   470
          err ("Ill-sorted instantiation of " ^ commas bads ^ " in"));
wenzelm@12255
   471
        add_parents thy parent'
schirmer@14700
   472
          (make_parent_info name fields' extension' induct::parents)
wenzelm@12247
   473
      end;
wenzelm@4867
   474
wenzelm@4867
   475
schirmer@14700
   476
(** concrete syntax for records **)
schirmer@14700
   477
schirmer@14700
   478
(* parse translations *)
schirmer@14700
   479
schirmer@14700
   480
fun gen_field_tr mark sfx (t as Const (c, _) $ Const (name, _) $ arg) =
schirmer@14700
   481
      if c = mark then Syntax.const (suffix sfx name) $ arg
schirmer@14700
   482
      else raise TERM ("gen_field_tr: " ^ mark, [t])
schirmer@14700
   483
  | gen_field_tr mark _ t = raise TERM ("gen_field_tr: " ^ mark, [t]);
schirmer@14700
   484
schirmer@14700
   485
fun gen_fields_tr sep mark sfx (tm as Const (c, _) $ t $ u) =
schirmer@14700
   486
      if c = sep then gen_field_tr mark sfx t :: gen_fields_tr sep mark sfx u
schirmer@14700
   487
      else [gen_field_tr mark sfx tm]
schirmer@14700
   488
  | gen_fields_tr _ mark sfx tm = [gen_field_tr mark sfx tm];
schirmer@14700
   489
schirmer@14700
   490
schirmer@14700
   491
fun record_update_tr [t, u] =
skalberg@15574
   492
      foldr (op $) t (rev (gen_fields_tr "_updates" "_update" updateN u))
schirmer@14700
   493
  | record_update_tr ts = raise TERM ("record_update_tr", ts);
schirmer@14700
   494
schirmer@14700
   495
fun update_name_tr (Free (x, T) :: ts) = Free (suffix updateN x, T) $$ ts
schirmer@14700
   496
  | update_name_tr (Const (x, T) :: ts) = Const (suffix updateN x, T) $$ ts
schirmer@14700
   497
  | update_name_tr (((c as Const ("_constrain", _)) $ t $ ty) :: ts) =
schirmer@14700
   498
      (c $ update_name_tr [t] $ (Syntax.const "fun" $ ty $ Syntax.const "dummy")) $$ ts
schirmer@14700
   499
  | update_name_tr ts = raise TERM ("update_name_tr", ts);
schirmer@14700
   500
schirmer@14700
   501
fun dest_ext_field mark (t as (Const (c,_) $ Const (name,_) $ arg)) =
schirmer@14700
   502
     if c = mark then (name,arg) else raise TERM ("dest_ext_field: " ^ mark, [t])
schirmer@14700
   503
  | dest_ext_field _ t = raise TERM ("dest_ext_field", [t])
schirmer@14700
   504
schirmer@14700
   505
fun dest_ext_fields sep mark (trm as (Const (c,_) $ t $ u)) =
schirmer@14700
   506
     if c = sep then dest_ext_field mark t::dest_ext_fields sep mark u
schirmer@14700
   507
     else [dest_ext_field mark trm]
schirmer@14700
   508
  | dest_ext_fields _ mark t = [dest_ext_field mark t]
schirmer@14700
   509
schirmer@14700
   510
fun gen_ext_fields_tr sep mark sfx more sg t =
wenzelm@17261
   511
  let
schirmer@14709
   512
    val msg = "error in record input: ";
wenzelm@17261
   513
    val fieldargs = dest_ext_fields sep mark t;
schirmer@14700
   514
    fun splitargs (field::fields) ((name,arg)::fargs) =
schirmer@14709
   515
          if can (unsuffix name) field
schirmer@14700
   516
          then let val (args,rest) = splitargs fields fargs
schirmer@14700
   517
               in (arg::args,rest) end
schirmer@14709
   518
          else raise TERM (msg ^ "expecting field " ^ field ^ " but got " ^ name, [t])
schirmer@14700
   519
      | splitargs [] (fargs as (_::_)) = ([],fargs)
schirmer@14709
   520
      | splitargs (_::_) [] = raise TERM (msg ^ "expecting more fields", [t])
schirmer@14700
   521
      | splitargs _ _ = ([],[]);
schirmer@14700
   522
schirmer@14700
   523
    fun mk_ext (fargs as (name,arg)::_) =
schirmer@14700
   524
         (case get_fieldext sg (Sign.intern_const sg name) of
skalberg@15531
   525
            SOME (ext,_) => (case get_extfields sg ext of
wenzelm@17261
   526
                               SOME flds
wenzelm@17261
   527
                                 => let val (args,rest) =
schirmer@14700
   528
                                               splitargs (map fst (but_last flds)) fargs;
wenzelm@17261
   529
                                        val more' = mk_ext rest;
schirmer@14700
   530
                                    in list_comb (Syntax.const (suffix sfx ext),args@[more'])
schirmer@14700
   531
                                    end
skalberg@15531
   532
                             | NONE => raise TERM(msg ^ "no fields defined for "
schirmer@14700
   533
                                                   ^ ext,[t]))
skalberg@15531
   534
          | NONE => raise TERM (msg ^ name ^" is no proper field",[t]))
schirmer@14700
   535
      | mk_ext [] = more
schirmer@14700
   536
wenzelm@17261
   537
  in mk_ext fieldargs end;
schirmer@14700
   538
schirmer@14700
   539
fun gen_ext_type_tr sep mark sfx more sg t =
wenzelm@17261
   540
  let
schirmer@14709
   541
    val msg = "error in record-type input: ";
wenzelm@17261
   542
    val fieldargs = dest_ext_fields sep mark t;
schirmer@14700
   543
    fun splitargs (field::fields) ((name,arg)::fargs) =
schirmer@14709
   544
          if can (unsuffix name) field
schirmer@14700
   545
          then let val (args,rest) = splitargs fields fargs
schirmer@14700
   546
               in (arg::args,rest) end
schirmer@14709
   547
          else raise TERM (msg ^ "expecting field " ^ field ^ " but got " ^ name, [t])
schirmer@14700
   548
      | splitargs [] (fargs as (_::_)) = ([],fargs)
schirmer@14709
   549
      | splitargs (_::_) [] = raise TERM (msg ^ "expecting more fields", [t])
schirmer@14700
   550
      | splitargs _ _ = ([],[]);
schirmer@14700
   551
haftmann@17377
   552
    fun get_sort xs n = AList.lookup (op =) xs n |> the_default (Sign.defaultS sg);
wenzelm@17261
   553
wenzelm@16934
   554
    fun to_type t = Sign.certify_typ sg
wenzelm@17261
   555
                       (Sign.intern_typ sg
schirmer@15957
   556
                         (Syntax.typ_of_term (get_sort (Syntax.raw_term_sorts t)) I t));
wenzelm@16934
   557
schirmer@14700
   558
    fun mk_ext (fargs as (name,arg)::_) =
schirmer@14700
   559
         (case get_fieldext sg (Sign.intern_const sg name) of
wenzelm@17261
   560
            SOME (ext,alphas) =>
schirmer@14700
   561
              (case get_extfields sg ext of
wenzelm@17261
   562
                 SOME flds
schirmer@14700
   563
                  => (let
schirmer@14700
   564
                       val flds' = but_last flds;
wenzelm@17261
   565
                       val types = map snd flds';
schirmer@14700
   566
                       val (args,rest) = splitargs (map fst flds') fargs;
schirmer@14700
   567
                       val vartypes = map Type.varifyT types;
schirmer@14700
   568
                       val argtypes = map to_type args;
wenzelm@16934
   569
                       val (subst,_) = fold (Sign.typ_unify sg) (vartypes ~~ argtypes)
wenzelm@16934
   570
                                            (Vartab.empty,0);
wenzelm@17261
   571
                       val alphas' = map ((Syntax.term_of_typ (! Syntax.show_sorts)) o
wenzelm@17261
   572
                                          Envir.norm_type subst o Type.varifyT)
schirmer@14700
   573
                                         (but_last alphas);
wenzelm@17261
   574
wenzelm@17261
   575
                       val more' = mk_ext rest;
wenzelm@17261
   576
                     in list_comb (Syntax.const (suffix sfx ext),alphas'@[more'])
wenzelm@17261
   577
                     end handle TUNIFY => raise
schirmer@14709
   578
                           TERM (msg ^ "type is no proper record (extension)", [t]))
skalberg@15531
   579
               | NONE => raise TERM (msg ^ "no fields defined for " ^ ext,[t]))
skalberg@15531
   580
          | NONE => raise TERM (msg ^ name ^" is no proper field",[t]))
schirmer@14700
   581
      | mk_ext [] = more
schirmer@14700
   582
wenzelm@17261
   583
  in mk_ext fieldargs end;
schirmer@14700
   584
wenzelm@17261
   585
fun gen_adv_record_tr sep mark sfx unit sg [t] =
schirmer@14700
   586
      gen_ext_fields_tr sep mark sfx unit sg t
schirmer@14700
   587
  | gen_adv_record_tr _ _ _ _ _ ts = raise TERM ("gen_record_tr", ts);
schirmer@14700
   588
wenzelm@17261
   589
fun gen_adv_record_scheme_tr sep mark sfx sg [t, more] =
wenzelm@17261
   590
      gen_ext_fields_tr sep mark sfx more sg t
schirmer@14700
   591
  | gen_adv_record_scheme_tr _ _ _ _ ts = raise TERM ("gen_record_scheme_tr", ts);
schirmer@14700
   592
wenzelm@17261
   593
fun gen_adv_record_type_tr sep mark sfx unit sg [t] =
schirmer@14700
   594
      gen_ext_type_tr sep mark sfx unit sg t
schirmer@14700
   595
  | gen_adv_record_type_tr _ _ _ _ _ ts = raise TERM ("gen_record_tr", ts);
schirmer@14700
   596
wenzelm@17261
   597
fun gen_adv_record_type_scheme_tr sep mark sfx sg [t, more] =
wenzelm@17261
   598
      gen_ext_type_tr sep mark sfx more sg t
schirmer@14700
   599
  | gen_adv_record_type_scheme_tr _ _ _ _ ts = raise TERM ("gen_record_scheme_tr", ts);
schirmer@14700
   600
schirmer@14700
   601
val adv_record_tr = gen_adv_record_tr "_fields" "_field" extN HOLogic.unit;
schirmer@14700
   602
val adv_record_scheme_tr = gen_adv_record_scheme_tr "_fields" "_field" extN;
schirmer@14700
   603
wenzelm@17261
   604
val adv_record_type_tr =
wenzelm@17261
   605
      gen_adv_record_type_tr "_field_types" "_field_type" ext_typeN
schirmer@14700
   606
        (Syntax.term_of_typ false (HOLogic.unitT));
wenzelm@17261
   607
val adv_record_type_scheme_tr =
schirmer@14700
   608
      gen_adv_record_type_scheme_tr "_field_types" "_field_type" ext_typeN;
schirmer@14700
   609
schirmer@15215
   610
schirmer@14700
   611
val parse_translation =
schirmer@14700
   612
 [("_record_update", record_update_tr),
wenzelm@17261
   613
  ("_update_name", update_name_tr)];
schirmer@14700
   614
wenzelm@17261
   615
val adv_parse_translation =
schirmer@14700
   616
 [("_record",adv_record_tr),
schirmer@14700
   617
  ("_record_scheme",adv_record_scheme_tr),
schirmer@14700
   618
  ("_record_type",adv_record_type_tr),
wenzelm@17261
   619
  ("_record_type_scheme",adv_record_type_scheme_tr)];
schirmer@14700
   620
schirmer@14700
   621
(* print translations *)
schirmer@14700
   622
schirmer@14700
   623
val print_record_type_abbr = ref true;
schirmer@14700
   624
val print_record_type_as_fields = ref true;
schirmer@14700
   625
schirmer@14700
   626
fun gen_field_upds_tr' mark sfx (tm as Const (name_field, _) $ t $ u) =
schirmer@14700
   627
    (case try (unsuffix sfx) name_field of
skalberg@15531
   628
      SOME name =>
schirmer@14700
   629
        apfst (cons (Syntax.const mark $ Syntax.free name $ t)) (gen_field_upds_tr' mark sfx u)
skalberg@15531
   630
     | NONE => ([], tm))
schirmer@14700
   631
  | gen_field_upds_tr' _ _ tm = ([], tm);
schirmer@14700
   632
schirmer@14700
   633
fun record_update_tr' tm =
schirmer@14700
   634
  let val (ts, u) = gen_field_upds_tr' "_update" updateN tm in
schirmer@14700
   635
    Syntax.const "_record_update" $ u $
schirmer@14700
   636
      foldr1 (fn (v, w) => Syntax.const "_updates" $ v $ w) (rev ts)
schirmer@14700
   637
  end;
schirmer@14700
   638
schirmer@14700
   639
fun gen_field_tr' sfx tr' name =
schirmer@14700
   640
  let val name_sfx = suffix sfx name
schirmer@14700
   641
  in (name_sfx, fn [t, u] => tr' (Syntax.const name_sfx $ t $ u) | _ => raise Match) end;
schirmer@14700
   642
schirmer@14700
   643
fun record_tr' sep mark record record_scheme unit sg t =
wenzelm@17261
   644
  let
schirmer@14700
   645
    fun field_lst t =
schirmer@14700
   646
      (case strip_comb t of
schirmer@17600
   647
        (Const (ext,_),args as (_::_))
schirmer@14700
   648
         => (case try (unsuffix extN) (Sign.intern_const sg ext) of
wenzelm@17261
   649
               SOME ext'
schirmer@14700
   650
               => (case get_extfields sg ext' of
wenzelm@17261
   651
                     SOME flds
schirmer@14700
   652
                     => (let
schirmer@14700
   653
                          val (f::fs) = but_last (map fst flds);
wenzelm@17261
   654
                          val flds' = Sign.extern_const sg f :: map NameSpace.base fs;
wenzelm@17261
   655
                          val (args',more) = split_last args;
schirmer@14700
   656
                         in (flds'~~args')@field_lst more end
skalberg@15570
   657
                         handle UnequalLengths => [("",t)])
skalberg@15531
   658
                   | NONE => [("",t)])
skalberg@15531
   659
             | NONE => [("",t)])
schirmer@14700
   660
       | _ => [("",t)])
schirmer@14700
   661
schirmer@14700
   662
    val (flds,(_,more)) = split_last (field_lst t);
schirmer@14700
   663
    val flds' = map (fn (n,t)=>Syntax.const mark$Syntax.const n$t) flds;
schirmer@14700
   664
    val flds'' = foldr1 (fn (x,y) => Syntax.const sep$x$y) flds';
schirmer@14700
   665
schirmer@14700
   666
  in if null flds then raise Match
wenzelm@17261
   667
     else if unit more
wenzelm@17261
   668
          then Syntax.const record$flds''
schirmer@14700
   669
          else Syntax.const record_scheme$flds''$more
schirmer@14700
   670
  end
schirmer@14700
   671
wenzelm@17261
   672
fun gen_record_tr' name =
schirmer@14700
   673
  let val name_sfx = suffix extN name;
schirmer@14700
   674
      val unit = (fn Const ("Unity",_) => true | _ => false);
wenzelm@17261
   675
      fun tr' sg ts = record_tr' "_fields" "_field" "_record" "_record_scheme" unit sg
schirmer@14700
   676
                       (list_comb (Syntax.const name_sfx,ts))
schirmer@14700
   677
  in (name_sfx,tr')
schirmer@14700
   678
  end
schirmer@14700
   679
schirmer@14700
   680
fun print_translation names =
schirmer@14700
   681
  map (gen_field_tr' updateN record_update_tr') names;
schirmer@14700
   682
schirmer@14700
   683
(* record_type_abbr_tr' tries to reconstruct the record name type abbreviation from *)
schirmer@14700
   684
(* the (nested) extension types.                                                    *)
schirmer@14700
   685
fun record_type_abbr_tr' default_tr' abbr alphas zeta lastExt schemeT sg tm =
schirmer@14700
   686
  let
schirmer@14700
   687
      (* tm is term representation of a (nested) field type. We first reconstruct the      *)
schirmer@14700
   688
      (* type from tm so that we can continue on the type level rather then the term level.*)
schirmer@14700
   689
haftmann@17377
   690
      fun get_sort xs n = AList.lookup (op =) xs n |> the_default (Sign.defaultS sg);
schirmer@14700
   691
schirmer@15273
   692
      (* WORKAROUND:
wenzelm@17261
   693
       * If a record type occurs in an error message of type inference there
schirmer@15273
   694
       * may be some internal frees donoted by ??:
wenzelm@17261
   695
       * (Const "_tfree",_)$Free ("??'a",_).
wenzelm@17261
   696
wenzelm@17261
   697
       * This will unfortunately be translated to Type ("??'a",[]) instead of
wenzelm@17261
   698
       * TFree ("??'a",_) by typ_of_term, which will confuse unify below.
schirmer@15273
   699
       * fixT works around.
schirmer@15273
   700
       *)
wenzelm@17261
   701
      fun fixT (T as Type (x,[])) =
schirmer@15273
   702
            if String.isPrefix "??'" x then TFree (x,Sign.defaultS sg) else T
schirmer@15273
   703
        | fixT (Type (x,xs)) = Type (x,map fixT xs)
schirmer@15273
   704
        | fixT T = T;
wenzelm@17261
   705
wenzelm@17261
   706
      val T = fixT (Sign.intern_typ sg
wenzelm@17261
   707
                      (Syntax.typ_of_term (get_sort (Syntax.raw_term_sorts tm)) I tm));
schirmer@14700
   708
wenzelm@17261
   709
      fun mk_type_abbr subst name alphas =
schirmer@16281
   710
          let val abbrT = Type (name, map (fn a => TVar ((a, 0), Sign.defaultS sg)) alphas);
wenzelm@17261
   711
          in Syntax.term_of_typ (! Syntax.show_sorts)
wenzelm@17261
   712
               (Sign.extern_typ sg (Envir.norm_type subst abbrT)) end;
schirmer@14700
   713
wenzelm@16934
   714
      fun unify rT T = fst (Sign.typ_unify sg (Type.varifyT rT,T) (Vartab.empty,0));
schirmer@14700
   715
schirmer@14700
   716
   in if !print_record_type_abbr
schirmer@14700
   717
      then (case last_extT T of
wenzelm@17261
   718
             SOME (name,_)
wenzelm@17261
   719
              => if name = lastExt
schirmer@14700
   720
                 then
wenzelm@17261
   721
                  (let
wenzelm@17261
   722
                     val subst = unify schemeT T
wenzelm@17261
   723
                   in
schirmer@14700
   724
                    if HOLogic.is_unitT (Envir.norm_type subst (TVar((zeta,0),Sign.defaultS sg)))
schirmer@14700
   725
                    then mk_type_abbr subst abbr alphas
schirmer@14700
   726
                    else mk_type_abbr subst (suffix schemeN abbr) (alphas@[zeta])
wenzelm@17261
   727
                   end handle TUNIFY => default_tr' sg tm)
schirmer@14700
   728
                 else raise Match (* give print translation of specialised record a chance *)
schirmer@14700
   729
            | _ => raise Match)
schirmer@14700
   730
       else default_tr' sg tm
schirmer@14700
   731
  end
schirmer@14700
   732
schirmer@14700
   733
fun record_type_tr' sep mark record record_scheme sg t =
schirmer@14700
   734
  let
haftmann@17377
   735
    fun get_sort xs n = AList.lookup (op =) xs n |> the_default (Sign.defaultS sg);
schirmer@14700
   736
schirmer@14700
   737
    val T = Sign.intern_typ sg (Syntax.typ_of_term (get_sort (Syntax.raw_term_sorts t)) I t)
schirmer@14700
   738
schirmer@14700
   739
    fun term_of_type T = Syntax.term_of_typ (!Syntax.show_sorts) (Sign.extern_typ sg T);
wenzelm@17261
   740
schirmer@14700
   741
    fun field_lst T =
schirmer@14700
   742
      (case T of
wenzelm@17261
   743
        Type (ext,args)
schirmer@14700
   744
         => (case try (unsuffix ext_typeN) ext of
wenzelm@17261
   745
               SOME ext'
schirmer@14700
   746
               => (case get_extfields sg ext' of
wenzelm@17261
   747
                     SOME flds
schirmer@14700
   748
                     => (case get_fieldext sg (fst (hd flds)) of
wenzelm@17261
   749
                           SOME (_,alphas)
schirmer@14700
   750
                           => (let
schirmer@14700
   751
                                val (f::fs) = but_last flds;
wenzelm@16364
   752
                                val flds' = apfst (Sign.extern_const sg) f
wenzelm@17261
   753
                                            ::map (apfst NameSpace.base) fs;
wenzelm@17261
   754
                                val (args',more) = split_last args;
wenzelm@17261
   755
                                val alphavars = map Type.varifyT (but_last alphas);
wenzelm@16934
   756
                                val (subst,_)= fold (Sign.typ_unify sg) (alphavars~~args')
wenzelm@16934
   757
                                                    (Vartab.empty,0);
wenzelm@16934
   758
                                val flds'' =map (apsnd (Envir.norm_type subst o Type.varifyT))
schirmer@14700
   759
                                                flds';
schirmer@14700
   760
                              in flds''@field_lst more end
wenzelm@17261
   761
                              handle TUNIFY         => [("",T)]
skalberg@15570
   762
                                   | UnequalLengths => [("",T)])
skalberg@15531
   763
                         | NONE => [("",T)])
skalberg@15531
   764
                   | NONE => [("",T)])
wenzelm@17261
   765
             | NONE => [("",T)])
schirmer@14700
   766
        | _ => [("",T)])
schirmer@14700
   767
schirmer@14700
   768
    val (flds,(_,moreT)) = split_last (field_lst T);
schirmer@14700
   769
    val flds' = map (fn (n,T)=>Syntax.const mark$Syntax.const n$term_of_type T) flds;
schirmer@14700
   770
    val flds'' = foldr1 (fn (x,y) => Syntax.const sep$x$y) flds';
schirmer@14700
   771
schirmer@14700
   772
  in if not (!print_record_type_as_fields) orelse null flds then raise Match
wenzelm@17261
   773
     else if moreT = HOLogic.unitT
wenzelm@17261
   774
          then Syntax.const record$flds''
schirmer@14700
   775
          else Syntax.const record_scheme$flds''$term_of_type moreT
schirmer@14700
   776
  end
wenzelm@17261
   777
schirmer@14700
   778
wenzelm@17261
   779
fun gen_record_type_tr' name =
schirmer@14700
   780
  let val name_sfx = suffix ext_typeN name;
wenzelm@17261
   781
      fun tr' sg ts = record_type_tr' "_field_types" "_field_type"
wenzelm@17261
   782
                       "_record_type" "_record_type_scheme" sg
schirmer@14700
   783
                       (list_comb (Syntax.const name_sfx,ts))
schirmer@14700
   784
  in (name_sfx,tr')
schirmer@14700
   785
  end
schirmer@14700
   786
wenzelm@17261
   787
schirmer@14700
   788
fun gen_record_type_abbr_tr' abbr alphas zeta lastExt schemeT name =
schirmer@14700
   789
  let val name_sfx = suffix ext_typeN name;
wenzelm@17261
   790
      val default_tr' = record_type_tr' "_field_types" "_field_type"
wenzelm@17261
   791
                               "_record_type" "_record_type_scheme"
schirmer@14700
   792
      fun tr' sg ts = record_type_abbr_tr' default_tr' abbr alphas zeta lastExt schemeT sg
schirmer@14700
   793
                         (list_comb (Syntax.const name_sfx,ts))
schirmer@14700
   794
  in (name_sfx, tr') end;
schirmer@14700
   795
schirmer@15015
   796
(** record simprocs **)
schirmer@14358
   797
schirmer@15015
   798
val record_quick_and_dirty_sensitive = ref false;
schirmer@15015
   799
schirmer@15215
   800
schirmer@15215
   801
fun quick_and_dirty_prove stndrd sg asms prop tac =
schirmer@15015
   802
  if !record_quick_and_dirty_sensitive andalso !quick_and_dirty
wenzelm@17960
   803
  then Goal.prove sg [] [] (Logic.list_implies (map Logic.varify asms,Logic.varify prop))
schirmer@15015
   804
        (K (SkipProof.cheat_tac HOL.thy))
schirmer@15015
   805
        (* standard can take quite a while for large records, thats why
wenzelm@17261
   806
         * we varify the proposition manually here.*)
wenzelm@17960
   807
  else let val prf = Goal.prove sg [] asms prop tac;
wenzelm@17261
   808
       in if stndrd then standard prf else prf end;
schirmer@15215
   809
wenzelm@17261
   810
fun quick_and_dirty_prf noopt opt () =
wenzelm@17261
   811
      if !record_quick_and_dirty_sensitive andalso !quick_and_dirty
schirmer@15215
   812
      then noopt ()
schirmer@15215
   813
      else opt ();
wenzelm@4867
   814
schirmer@14255
   815
wenzelm@16973
   816
fun prove_split_simp sg ss T prop =
wenzelm@17261
   817
  let
wenzelm@16458
   818
    val {sel_upd={simpset,...},extsplit,...} = RecordsData.get sg;
wenzelm@17261
   819
    val extsplits =
wenzelm@17412
   820
            Library.foldl (fn (thms,(n,_)) => the_list (Symtab.lookup extsplit n) @ thms)
schirmer@15015
   821
                    ([],dest_recTs T);
schirmer@15273
   822
    val thms = (case get_splits sg (rec_id (~1) T) of
wenzelm@17261
   823
                   SOME (all_thm,_,_,_) =>
schirmer@15203
   824
                     all_thm::(case extsplits of [thm] => [] | _ => extsplits)
schirmer@15203
   825
                              (* [thm] is the same as all_thm *)
wenzelm@17261
   826
                 | NONE => extsplits)
wenzelm@16973
   827
  in
wenzelm@16973
   828
    quick_and_dirty_prove true sg [] prop
wenzelm@17875
   829
      (fn _ => simp_tac (Simplifier.inherit_context ss simpset addsimps thms) 1)
schirmer@15203
   830
  end;
schirmer@15015
   831
schirmer@15215
   832
schirmer@15059
   833
local
schirmer@16822
   834
fun eq (s1:string) (s2:string) = (s1 = s2);
schirmer@16822
   835
fun has_field extfields f T =
wenzelm@17412
   836
     exists (fn (eN,_) => exists (eq f o fst) (Symtab.lookup_multi extfields eN))
schirmer@16822
   837
       (dest_recTs T);
schirmer@15059
   838
in
schirmer@14255
   839
(* record_simproc *)
schirmer@14255
   840
(* Simplifies selections of an record update:
schirmer@14255
   841
 *  (1)  S (r(|S:=k|)) = k respectively
schirmer@14255
   842
 *  (2)  S (r(|X:=k|)) = S r
schirmer@14255
   843
 * The simproc skips multiple updates at once, eg:
schirmer@14255
   844
 *  S (r (|S:=k,X:=2,Y:=3|)) = k
schirmer@14255
   845
 * But be careful in (2) because of the extendibility of records.
schirmer@14255
   846
 * - If S is a more-selector we have to make sure that the update on component
schirmer@14255
   847
 *   X does not affect the selected subrecord.
schirmer@14255
   848
 * - If X is a more-selector we have to make sure that S is not in the updated
wenzelm@17261
   849
 *   subrecord.
schirmer@14255
   850
 *)
wenzelm@13462
   851
val record_simproc =
wenzelm@17616
   852
  Simplifier.simproc HOL.thy "record_simp" ["x"]
wenzelm@16973
   853
    (fn sg => fn ss => fn t =>
schirmer@16872
   854
      (case t of (sel as Const (s, Type (_,[domS,rangeS])))$
schirmer@16872
   855
                   ((upd as Const (u,Type(_,[_,Type (_,[rT,_])]))) $ k $ r)=>
wenzelm@17510
   856
        if is_selector sg s then
skalberg@15531
   857
          (case get_updates sg u of SOME u_name =>
wenzelm@13462
   858
            let
wenzelm@16458
   859
              val {sel_upd={updates,...},extfields,...} = RecordsData.get sg;
wenzelm@17261
   860
schirmer@16872
   861
              fun mk_eq_terms ((upd as Const (u,Type(_,[kT,_]))) $ k $ r) =
wenzelm@17412
   862
                  (case Symtab.lookup updates u of
skalberg@15531
   863
                     NONE => NONE
wenzelm@17261
   864
                   | SOME u_name
schirmer@14255
   865
                     => if u_name = s
wenzelm@17261
   866
                        then let
schirmer@16872
   867
                               val rv = ("r",rT)
schirmer@14255
   868
                               val rb = Bound 0
schirmer@16872
   869
                               val kv = ("k",kT)
wenzelm@17261
   870
                               val kb = Bound 1
skalberg@15531
   871
                             in SOME (upd$kb$rb,kb,[kv,rv],true) end
schirmer@16822
   872
                        else if has_field extfields u_name rangeS
schirmer@16872
   873
                             orelse has_field extfields s kT
skalberg@15531
   874
                             then NONE
wenzelm@17261
   875
                             else (case mk_eq_terms r of
wenzelm@17261
   876
                                     SOME (trm,trm',vars,update_s)
wenzelm@17261
   877
                                     => let
wenzelm@17261
   878
                                          val kv = ("k",kT)
schirmer@14255
   879
                                          val kb = Bound (length vars)
wenzelm@17261
   880
                                        in SOME (upd$kb$trm,trm',kv::vars,update_s) end
skalberg@15531
   881
                                   | NONE
wenzelm@17261
   882
                                     => let
wenzelm@17261
   883
                                          val rv = ("r",rT)
schirmer@14255
   884
                                          val rb = Bound 0
schirmer@16872
   885
                                          val kv = ("k",kT)
wenzelm@17261
   886
                                          val kb = Bound 1
skalberg@15531
   887
                                        in SOME (upd$kb$rb,rb,[kv,rv],false) end))
wenzelm@17261
   888
                | mk_eq_terms r = NONE
wenzelm@13462
   889
            in
wenzelm@17261
   890
              (case mk_eq_terms (upd$k$r) of
wenzelm@17261
   891
                 SOME (trm,trm',vars,update_s)
wenzelm@17261
   892
                 => if update_s
wenzelm@17261
   893
                    then SOME (prove_split_simp sg ss domS
schirmer@16872
   894
                                 (list_all(vars,(equals rangeS$(sel$trm)$trm'))))
wenzelm@17261
   895
                    else SOME (prove_split_simp sg ss domS
schirmer@16872
   896
                                 (list_all(vars,(equals rangeS$(sel$trm)$(sel$trm')))))
skalberg@15531
   897
               | NONE => NONE)
wenzelm@13462
   898
            end
skalberg@15531
   899
          | NONE => NONE)
wenzelm@17510
   900
        else NONE
skalberg@15531
   901
      | _ => NONE));
wenzelm@7178
   902
wenzelm@17261
   903
(* record_upd_simproc *)
schirmer@15015
   904
(* simplify multiple updates:
schirmer@15015
   905
 *  (1)  "r(|M:=3,N:=1,M:=2,N:=4|) == r(|M:=2,N:=4|)"
schirmer@15015
   906
 *  (2)  "r(|M:= M r|) = r"
schirmer@15015
   907
 * For (2) special care of "more" updates has to be taken:
schirmer@15015
   908
 *    r(|more := m; A := A r|)
schirmer@15015
   909
 * If A is contained in the fields of m we cannot remove the update A := A r!
wenzelm@17261
   910
 * (But r(|more := r; A := A (r(|more := r|))|) = r(|more := r|)
schirmer@15015
   911
*)
schirmer@15015
   912
val record_upd_simproc =
wenzelm@17616
   913
  Simplifier.simproc HOL.thy "record_upd_simp" ["x"]
wenzelm@16973
   914
    (fn sg => fn ss => fn t =>
schirmer@16872
   915
      (case t of ((upd as Const (u, Type(_,[_,Type(_,[rT,_])]))) $ k $ r) =>
wenzelm@17261
   916
         let datatype ('a,'b) calc = Init of 'b | Inter of 'a
wenzelm@16458
   917
             val {sel_upd={selectors,updates,...},extfields,...} = RecordsData.get sg;
wenzelm@17261
   918
wenzelm@17261
   919
             (*fun mk_abs_var x t = (x, fastype_of t);*)
schirmer@15015
   920
             fun sel_name u = NameSpace.base (unsuffix updateN u);
schirmer@15015
   921
schirmer@15015
   922
             fun seed s (upd as Const (more,Type(_,[mT,_]))$ k $ r) =
schirmer@16822
   923
                  if has_field extfields s mT then upd else seed s r
schirmer@15015
   924
               | seed _ r = r;
schirmer@15015
   925
wenzelm@17261
   926
             fun grow u uT k kT vars (sprout,skeleton) =
wenzelm@17261
   927
                   if sel_name u = moreN
schirmer@16872
   928
                   then let val kv = ("k", kT);
schirmer@15015
   929
                            val kb = Bound (length vars);
schirmer@15015
   930
                        in ((Const (u,uT)$k$sprout,Const (u,uT)$kb$skeleton),kv::vars) end
schirmer@15015
   931
                   else ((sprout,skeleton),vars);
schirmer@15015
   932
schirmer@15015
   933
             fun is_upd_same (sprout,skeleton) u ((sel as Const (s,_))$r) =
wenzelm@17261
   934
                   if (unsuffix updateN u) = s andalso (seed s sprout) = r
skalberg@15531
   935
                   then SOME (sel,seed s skeleton)
skalberg@15531
   936
                   else NONE
skalberg@15531
   937
               | is_upd_same _ _ _ = NONE
wenzelm@17261
   938
schirmer@16872
   939
             fun init_seed r = ((r,Bound 0), [("r", rT)]);
wenzelm@17261
   940
schirmer@15015
   941
             (* mk_updterm returns either
schirmer@15015
   942
              *  - Init (orig-term, orig-term-skeleton, vars) if no optimisation can be made,
wenzelm@17261
   943
              *     where vars are the bound variables in the skeleton
wenzelm@17261
   944
              *  - Inter (orig-term-skeleton,simplified-term-skeleton,
schirmer@16872
   945
              *           vars, (term-sprout, skeleton-sprout))
schirmer@15015
   946
              *     where "All vars. orig-term-skeleton = simplified-term-skeleton" is
schirmer@15015
   947
              *     the desired simplification rule,
schirmer@15015
   948
              *     the sprouts accumulate the "more-updates" on the way from the seed
wenzelm@17261
   949
              *     to the outermost update. It is only relevant to calculate the
wenzelm@17261
   950
              *     possible simplification for (2)
schirmer@15015
   951
              * The algorithm first walks down the updates to the seed-record while
schirmer@15015
   952
              * memorising the updates in the already-table. While walking up the
schirmer@15015
   953
              * updates again, the optimised term is constructed.
schirmer@15015
   954
              *)
wenzelm@17261
   955
             fun mk_updterm upds already
schirmer@16872
   956
                 (t as ((upd as Const (u,uT as (Type (_,[kT,_])))) $ k $ r)) =
wenzelm@17261
   957
                 if Symtab.defined upds u
wenzelm@17261
   958
                 then let
wenzelm@17261
   959
                         fun rest already = mk_updterm upds already
wenzelm@17261
   960
                      in if u mem_string already
wenzelm@17261
   961
                         then (case (rest already r) of
wenzelm@17261
   962
                                 Init ((sprout,skel),vars) =>
schirmer@15015
   963
                                 let
wenzelm@17261
   964
                                   val kv = (sel_name u, kT);
schirmer@15015
   965
                                   val kb = Bound (length vars);
schirmer@16872
   966
                                   val (sprout',vars')= grow u uT k kT (kv::vars) (sprout,skel);
schirmer@15015
   967
                                 in Inter (upd$kb$skel,skel,vars',sprout') end
wenzelm@17261
   968
                               | Inter (trm,trm',vars,sprout) =>
wenzelm@17261
   969
                                 let
wenzelm@17261
   970
                                   val kv = (sel_name u, kT);
schirmer@15015
   971
                                   val kb = Bound (length vars);
schirmer@16872
   972
                                   val (sprout',vars') = grow u uT k kT (kv::vars) sprout;
wenzelm@17261
   973
                                 in Inter(upd$kb$trm,trm',kv::vars',sprout') end)
wenzelm@17261
   974
                         else
wenzelm@17261
   975
                          (case rest (u::already) r of
wenzelm@17261
   976
                             Init ((sprout,skel),vars) =>
schirmer@15015
   977
                              (case is_upd_same (sprout,skel) u k of
wenzelm@17261
   978
                                 SOME (sel,skel') =>
schirmer@15015
   979
                                 let
wenzelm@17261
   980
                                   val (sprout',vars') = grow u uT k kT vars (sprout,skel);
schirmer@15015
   981
                                  in Inter(upd$(sel$skel')$skel,skel,vars',sprout') end
wenzelm@17261
   982
                               | NONE =>
schirmer@15015
   983
                                 let
wenzelm@17261
   984
                                   val kv = (sel_name u, kT);
schirmer@15015
   985
                                   val kb = Bound (length vars);
schirmer@15015
   986
                                 in Init ((upd$k$sprout,upd$kb$skel),kv::vars) end)
wenzelm@17261
   987
                           | Inter (trm,trm',vars,sprout) =>
schirmer@15015
   988
                               (case is_upd_same sprout u k of
skalberg@15531
   989
                                  SOME (sel,skel) =>
schirmer@15015
   990
                                  let
schirmer@16872
   991
                                    val (sprout',vars') = grow u uT k kT vars sprout
schirmer@15015
   992
                                  in Inter(upd$(sel$skel)$trm,trm',vars',sprout') end
skalberg@15531
   993
                                | NONE =>
schirmer@15015
   994
                                  let
wenzelm@17261
   995
                                    val kv = (sel_name u, kT)
schirmer@15015
   996
                                    val kb = Bound (length vars)
schirmer@16872
   997
                                    val (sprout',vars') = grow u uT k kT (kv::vars) sprout
schirmer@15015
   998
                                  in Inter (upd$kb$trm,upd$kb$trm',vars',sprout') end))
wenzelm@17261
   999
                      end
wenzelm@17261
  1000
                 else Init (init_seed t)
wenzelm@17261
  1001
               | mk_updterm _ _ t = Init (init_seed t);
schirmer@15015
  1002
wenzelm@17261
  1003
         in (case mk_updterm updates [] t of
wenzelm@17261
  1004
               Inter (trm,trm',vars,_)
wenzelm@17261
  1005
                => SOME (prove_split_simp sg ss rT
schirmer@16872
  1006
                          (list_all(vars,(equals rT$trm$trm'))))
skalberg@15531
  1007
             | _ => NONE)
wenzelm@17261
  1008
         end
skalberg@15531
  1009
       | _ => NONE));
schirmer@15059
  1010
end
schirmer@15015
  1011
schirmer@14255
  1012
(* record_eq_simproc *)
schirmer@14255
  1013
(* looks up the most specific record-equality.
schirmer@14255
  1014
 * Note on efficiency:
schirmer@14255
  1015
 * Testing equality of records boils down to the test of equality of all components.
schirmer@14255
  1016
 * Therefore the complexity is: #components * complexity for single component.
schirmer@14255
  1017
 * Especially if a record has a lot of components it may be better to split up
schirmer@14255
  1018
 * the record first and do simplification on that (record_split_simp_tac).
schirmer@14255
  1019
 * e.g. r(|lots of updates|) = x
schirmer@14255
  1020
 *
schirmer@14700
  1021
 *               record_eq_simproc       record_split_simp_tac
wenzelm@17261
  1022
 * Complexity: #components * #updates     #updates
wenzelm@17261
  1023
 *
schirmer@14255
  1024
 *)
berghofe@14079
  1025
val record_eq_simproc =
wenzelm@17510
  1026
  Simplifier.simproc HOL.thy "record_eq_simp" ["r = s"]
berghofe@14079
  1027
    (fn sg => fn _ => fn t =>
berghofe@14079
  1028
      (case t of Const ("op =", Type (_, [T, _])) $ _ $ _ =>
schirmer@15273
  1029
        (case rec_id (~1) T of
skalberg@15531
  1030
           "" => NONE
schirmer@14700
  1031
         | name => (case get_equalities sg name of
skalberg@15531
  1032
                                NONE => NONE
skalberg@15531
  1033
                              | SOME thm => SOME (thm RS Eq_TrueI)))
skalberg@15531
  1034
       | _ => NONE));
berghofe@14079
  1035
schirmer@14255
  1036
(* record_split_simproc *)
wenzelm@17261
  1037
(* splits quantified occurrences of records, for which P holds. P can peek on the
schirmer@14255
  1038
 * subterm starting at the quantified occurrence of the record (including the quantifier)
schirmer@15273
  1039
 * P t = 0: do not split
schirmer@15273
  1040
 * P t = ~1: completely split
schirmer@15273
  1041
 * P t > 0: split up to given bound of record extensions
schirmer@14255
  1042
 *)
schirmer@14255
  1043
fun record_split_simproc P =
wenzelm@17616
  1044
  Simplifier.simproc HOL.thy "record_split_simp" ["x"]
schirmer@14255
  1045
    (fn sg => fn _ => fn t =>
schirmer@14255
  1046
      (case t of (Const (quantifier, Type (_, [Type (_, [T, _]), _])))$trm =>
schirmer@14255
  1047
         if quantifier = "All" orelse quantifier = "all" orelse quantifier = "Ex"
schirmer@15273
  1048
         then (case rec_id (~1) T of
skalberg@15531
  1049
                 "" => NONE
schirmer@14700
  1050
               | name
wenzelm@17261
  1051
                  => let val split = P t
wenzelm@17261
  1052
                     in if split <> 0 then
schirmer@15273
  1053
                        (case get_splits sg (rec_id split T) of
skalberg@15531
  1054
                              NONE => NONE
wenzelm@17261
  1055
                            | SOME (all_thm, All_thm, Ex_thm,_)
skalberg@15531
  1056
                               => SOME (case quantifier of
schirmer@15273
  1057
                                          "all" => all_thm
schirmer@15273
  1058
                                        | "All" => All_thm RS HOL.eq_reflection
schirmer@15273
  1059
                                        | "Ex"  => Ex_thm RS HOL.eq_reflection
schirmer@15273
  1060
                                        | _     => error "record_split_simproc"))
skalberg@15531
  1061
                        else NONE
schirmer@15273
  1062
                      end)
skalberg@15531
  1063
         else NONE
skalberg@15531
  1064
       | _ => NONE))
wenzelm@7178
  1065
schirmer@14427
  1066
val record_ex_sel_eq_simproc =
wenzelm@17510
  1067
  Simplifier.simproc HOL.thy "record_ex_sel_eq_simproc" ["Ex t"]
wenzelm@16973
  1068
    (fn sg => fn ss => fn t =>
wenzelm@17261
  1069
       let
wenzelm@16973
  1070
         fun prove prop =
wenzelm@16973
  1071
           quick_and_dirty_prove true sg [] prop
wenzelm@17875
  1072
             (fn _ => simp_tac (Simplifier.inherit_context ss (get_simpset sg)
wenzelm@16973
  1073
               addsimps simp_thms addsimprocs [record_split_simproc (K ~1)]) 1);
schirmer@14959
  1074
schirmer@14959
  1075
         fun mkeq (lr,Teq,(sel,Tsel),x) i =
wenzelm@17510
  1076
              if is_selector sg sel then
wenzelm@17261
  1077
                 let val x' = if not (loose_bvar1 (x,0))
wenzelm@17261
  1078
                              then Free ("x" ^ string_of_int i, range_type Tsel)
schirmer@14959
  1079
                              else raise TERM ("",[x]);
schirmer@14959
  1080
                     val sel' = Const (sel,Tsel)$Bound 0;
schirmer@14959
  1081
                     val (l,r) = if lr then (sel',x') else (x',sel');
schirmer@14959
  1082
                  in Const ("op =",Teq)$l$r end
wenzelm@17510
  1083
              else raise TERM ("",[Const (sel,Tsel)]);
schirmer@14959
  1084
wenzelm@17261
  1085
         fun dest_sel_eq (Const ("op =",Teq)$(Const (sel,Tsel)$Bound 0)$X) =
schirmer@14959
  1086
                           (true,Teq,(sel,Tsel),X)
schirmer@14959
  1087
           | dest_sel_eq (Const ("op =",Teq)$X$(Const (sel,Tsel)$Bound 0)) =
schirmer@14959
  1088
                           (false,Teq,(sel,Tsel),X)
schirmer@14959
  1089
           | dest_sel_eq _ = raise TERM ("",[]);
schirmer@14959
  1090
wenzelm@17261
  1091
       in
wenzelm@17261
  1092
         (case t of
schirmer@14959
  1093
           (Const ("Ex",Tex)$Abs(s,T,t)) =>
schirmer@16872
  1094
             (let val eq = mkeq (dest_sel_eq t) 0;
schirmer@14959
  1095
                 val prop = list_all ([("r",T)],
schirmer@14959
  1096
                              Logic.mk_equals (Const ("Ex",Tex)$Abs(s,T,eq),
schirmer@14959
  1097
                                               HOLogic.true_const));
skalberg@15531
  1098
             in SOME (prove prop) end
schirmer@16872
  1099
             handle TERM _ => NONE)
wenzelm@17261
  1100
          | _ => NONE)
schirmer@14427
  1101
         end)
schirmer@14427
  1102
wenzelm@5698
  1103
wenzelm@17261
  1104
wenzelm@6358
  1105
schirmer@14255
  1106
local
schirmer@14255
  1107
val inductive_atomize = thms "induct_atomize";
wenzelm@18464
  1108
val inductive_rulify = thms "induct_rulify";
schirmer@14255
  1109
in
schirmer@14255
  1110
(* record_split_simp_tac *)
wenzelm@17261
  1111
(* splits (and simplifies) all records in the goal for which P holds.
schirmer@14255
  1112
 * For quantified occurrences of a record
schirmer@14255
  1113
 * P can peek on the whole subterm (including the quantifier); for free variables P
schirmer@15273
  1114
 * can only peek on the variable itself.
schirmer@15273
  1115
 * P t = 0: do not split
schirmer@15273
  1116
 * P t = ~1: completely split
wenzelm@17261
  1117
 * P t > 0: split up to given bound of record extensions
schirmer@14255
  1118
 *)
schirmer@15248
  1119
fun record_split_simp_tac thms P i st =
schirmer@14255
  1120
  let
schirmer@14255
  1121
    val sg = Thm.sign_of_thm st;
schirmer@14255
  1122
schirmer@14700
  1123
    val has_rec = exists_Const
schirmer@14255
  1124
      (fn (s, Type (_, [Type (_, [T, _]), _])) =>
wenzelm@17261
  1125
          (s = "all" orelse s = "All" orelse s = "Ex") andalso is_recT T
schirmer@14255
  1126
        | _ => false);
schirmer@14255
  1127
haftmann@18011
  1128
    val goal = nth (Thm.prems_of st) (i - 1);
skalberg@15570
  1129
    val frees = List.filter (is_recT o type_of) (term_frees goal);
schirmer@14255
  1130
wenzelm@17261
  1131
    fun mk_split_free_tac free induct_thm i =
wenzelm@17261
  1132
        let val cfree = cterm_of sg free;
schirmer@14255
  1133
            val (_$(_$r)) = concl_of induct_thm;
schirmer@14255
  1134
            val crec = cterm_of sg r;
schirmer@14255
  1135
            val thm  = cterm_instantiate [(crec,cfree)] induct_thm;
schirmer@14255
  1136
        in EVERY [simp_tac (HOL_basic_ss addsimps inductive_atomize) i,
schirmer@14255
  1137
                  rtac thm i,
wenzelm@18464
  1138
                  simp_tac (HOL_basic_ss addsimps inductive_rulify) i]
wenzelm@17261
  1139
        end;
schirmer@14255
  1140
wenzelm@17261
  1141
    fun split_free_tac P i (free as Free (n,T)) =
wenzelm@17261
  1142
        (case rec_id (~1) T of
skalberg@15531
  1143
           "" => NONE
wenzelm@17261
  1144
         | name => let val split = P free
wenzelm@17261
  1145
                   in if split <> 0 then
schirmer@15273
  1146
                      (case get_splits sg (rec_id split T) of
skalberg@15531
  1147
                             NONE => NONE
skalberg@15531
  1148
                           | SOME (_,_,_,induct_thm)
skalberg@15531
  1149
                               => SOME (mk_split_free_tac free induct_thm i))
skalberg@15531
  1150
                      else NONE
schirmer@15273
  1151
                   end)
skalberg@15531
  1152
     | split_free_tac _ _ _ = NONE;
schirmer@14255
  1153
skalberg@15570
  1154
    val split_frees_tacs = List.mapPartial (split_free_tac P i) frees;
wenzelm@17261
  1155
schirmer@14700
  1156
    val simprocs = if has_rec goal then [record_split_simproc P] else [];
wenzelm@17261
  1157
wenzelm@17261
  1158
  in st |> ((EVERY split_frees_tacs)
wenzelm@17892
  1159
           THEN (Simplifier.full_simp_tac (get_simpset sg addsimps thms addsimprocs simprocs) i))
skalberg@15570
  1160
  end handle Empty => Seq.empty;
schirmer@14255
  1161
end;
schirmer@14255
  1162
schirmer@14700
  1163
schirmer@14700
  1164
(* record_split_tac *)
schirmer@14700
  1165
(* splits all records in the goal, which are quantified by ! or !!. *)
schirmer@14700
  1166
fun record_split_tac i st =
schirmer@14700
  1167
  let
schirmer@14700
  1168
    val sg = Thm.sign_of_thm st;
schirmer@14700
  1169
schirmer@14700
  1170
    val has_rec = exists_Const
schirmer@14700
  1171
      (fn (s, Type (_, [Type (_, [T, _]), _])) =>
wenzelm@17261
  1172
          (s = "all" orelse s = "All") andalso is_recT T
schirmer@14700
  1173
        | _ => false);
wenzelm@17261
  1174
haftmann@18011
  1175
    val goal = nth (Thm.prems_of st) (i - 1);
schirmer@14700
  1176
schirmer@14700
  1177
    fun is_all t =
schirmer@14700
  1178
      (case t of (Const (quantifier, _)$_) =>
schirmer@15273
  1179
         if quantifier = "All" orelse quantifier = "all" then ~1 else 0
schirmer@15273
  1180
       | _ => 0);
wenzelm@17261
  1181
wenzelm@17261
  1182
  in if has_rec goal
wenzelm@17261
  1183
     then Simplifier.full_simp_tac
wenzelm@17261
  1184
           (HOL_basic_ss addsimprocs [record_split_simproc is_all]) i st
schirmer@14700
  1185
     else Seq.empty
skalberg@15570
  1186
  end handle Subscript => Seq.empty;
schirmer@14700
  1187
wenzelm@6358
  1188
(* wrapper *)
wenzelm@6358
  1189
wenzelm@5707
  1190
val record_split_name = "record_split_tac";
wenzelm@5707
  1191
val record_split_wrapper = (record_split_name, fn tac => record_split_tac ORELSE' tac);
wenzelm@5698
  1192
wenzelm@16330
  1193
wenzelm@16330
  1194
wenzelm@4867
  1195
(** theory extender interface **)
wenzelm@4867
  1196
wenzelm@4867
  1197
(* prepare arguments *)
wenzelm@4867
  1198
wenzelm@4867
  1199
fun read_raw_parent sign s =
wenzelm@16330
  1200
  (case Sign.read_typ_abbrev (sign, K NONE) s handle TYPE (msg, _, _) => error msg of
wenzelm@4867
  1201
    Type (name, Ts) => (Ts, name)
wenzelm@4867
  1202
  | _ => error ("Bad parent record specification: " ^ quote s));
wenzelm@4867
  1203
wenzelm@4867
  1204
fun read_typ sign (env, s) =
wenzelm@4867
  1205
  let
haftmann@17377
  1206
    fun def_sort (x, ~1) = AList.lookup (op =) env x
skalberg@15531
  1207
      | def_sort _ = NONE;
wenzelm@5060
  1208
    val T = Type.no_tvars (Sign.read_typ (sign, def_sort) s) handle TYPE (msg, _, _) => error msg;
wenzelm@4867
  1209
  in (Term.add_typ_tfrees (T, env), T) end;
wenzelm@4867
  1210
wenzelm@4867
  1211
fun cert_typ sign (env, raw_T) =
wenzelm@4867
  1212
  let val T = Type.no_tvars (Sign.certify_typ sign raw_T) handle TYPE (msg, _, _) => error msg
wenzelm@4867
  1213
  in (Term.add_typ_tfrees (T, env), T) end;
wenzelm@4867
  1214
schirmer@14700
  1215
(* attributes *)
schirmer@14700
  1216
schirmer@14700
  1217
fun case_names_fields x = RuleCases.case_names ["fields"] x;
wenzelm@18643
  1218
fun induct_type_global name = [case_names_fields, Attrib.theory (InductAttrib.induct_type name)];
wenzelm@18643
  1219
fun cases_type_global name = [case_names_fields, Attrib.theory (InductAttrib.cases_type name)];
schirmer@14700
  1220
schirmer@14700
  1221
(* tactics *)
schirmer@14700
  1222
schirmer@14700
  1223
fun simp_all_tac ss simps = ALLGOALS (Simplifier.asm_full_simp_tac (ss addsimps simps));
schirmer@14700
  1224
wenzelm@17261
  1225
(* do case analysis / induction according to rule on last parameter of ith subgoal
wenzelm@17261
  1226
 * (or on s if there are no parameters);
schirmer@14700
  1227
 * Instatiation of record variable (and predicate) in rule is calculated to
wenzelm@17261
  1228
 * avoid problems with higher order unification.
schirmer@14700
  1229
 *)
schirmer@14700
  1230
schirmer@14700
  1231
fun try_param_tac s rule i st =
schirmer@14700
  1232
  let
wenzelm@17510
  1233
    val cert = cterm_of (Thm.theory_of_thm st);
haftmann@18011
  1234
    val g = nth (prems_of st) (i - 1);
schirmer@14700
  1235
    val params = Logic.strip_params g;
schirmer@14700
  1236
    val concl = HOLogic.dest_Trueprop (Logic.strip_assums_concl g);
wenzelm@18145
  1237
    val rule' = Thm.lift_rule (Thm.cprem_of st i) rule;
schirmer@14700
  1238
    val (P, ys) = strip_comb (HOLogic.dest_Trueprop
schirmer@14700
  1239
      (Logic.strip_assums_concl (prop_of rule')));
schirmer@14700
  1240
    (* ca indicates if rule is a case analysis or induction rule *)
skalberg@15570
  1241
    val (x, ca) = (case rev (Library.drop (length params, ys)) of
schirmer@14700
  1242
        [] => (head_of (fst (HOLogic.dest_eq (HOLogic.dest_Trueprop
schirmer@14700
  1243
          (hd (rev (Logic.strip_assums_hyp (hd (prems_of rule')))))))), true)
schirmer@14700
  1244
      | [x] => (head_of x, false));
schirmer@14700
  1245
    val rule'' = cterm_instantiate (map (pairself cert) (case (rev params) of
haftmann@17377
  1246
        [] => (case AList.lookup (op =) (map dest_Free (term_frees (prop_of st))) s of
skalberg@15531
  1247
          NONE => sys_error "try_param_tac: no such variable"
skalberg@15531
  1248
        | SOME T => [(P, if ca then concl else lambda (Free (s, T)) concl),
schirmer@14700
  1249
            (x, Free (s, T))])
schirmer@14700
  1250
      | (_, T) :: _ => [(P, list_abs (params, if ca then concl
schirmer@14700
  1251
          else incr_boundvars 1 (Abs (s, T, concl)))),
schirmer@14700
  1252
        (x, list_abs (params, Bound 0))])) rule'
schirmer@14700
  1253
  in compose_tac (false, rule'', nprems_of rule) i st end;
schirmer@14700
  1254
schirmer@15215
  1255
schirmer@15215
  1256
(* !!x1 ... xn. ... ==> EX x1 ... xn. P x1 ... xn;
schirmer@15215
  1257
   instantiates x1 ... xn with parameters x1 ... xn *)
schirmer@15215
  1258
fun ex_inst_tac i st =
schirmer@15215
  1259
  let
schirmer@15215
  1260
    val sg = sign_of_thm st;
haftmann@18011
  1261
    val g = nth (prems_of st) (i - 1);
schirmer@15215
  1262
    val params = Logic.strip_params g;
wenzelm@18145
  1263
    val exI' = Thm.lift_rule (Thm.cprem_of st i) exI;
schirmer@15215
  1264
    val (_$(_$x)) = Logic.strip_assums_concl (hd (prems_of exI'));
schirmer@15215
  1265
    val cx = cterm_of sg (fst (strip_comb x));
schirmer@15215
  1266
wenzelm@17261
  1267
  in Seq.single (Library.foldl (fn (st,v) =>
wenzelm@17261
  1268
        Seq.hd
wenzelm@17261
  1269
        (compose_tac (false, cterm_instantiate
wenzelm@17261
  1270
                                [(cx,cterm_of sg (list_abs (params,Bound v)))] exI',1)
schirmer@15215
  1271
                i st)) (st,((length params) - 1) downto 0))
schirmer@15215
  1272
  end;
schirmer@15215
  1273
schirmer@14700
  1274
fun extension_typedef name repT alphas thy =
schirmer@14700
  1275
  let
schirmer@14700
  1276
    val UNIV = HOLogic.mk_UNIV repT;
schirmer@14700
  1277
wenzelm@17261
  1278
    val (thy',{set_def=SOME def, Abs_induct = abs_induct,
schirmer@14700
  1279
               Abs_inject=abs_inject, Abs_inverse = abs_inverse,...}) =
schirmer@14700
  1280
        thy |> setmp TypedefPackage.quiet_mode true
skalberg@15531
  1281
           (TypedefPackage.add_typedef_i true NONE
skalberg@15531
  1282
             (suffix ext_typeN (Sign.base_name name), alphas, Syntax.NoSyn) UNIV NONE
schirmer@14700
  1283
             (Tactic.rtac UNIV_witness 1))
schirmer@14700
  1284
    val rewrite_rule = Tactic.rewrite_rule [def, rec_UNIV_I, rec_True_simp];
haftmann@18377
  1285
  in (map rewrite_rule [abs_inject, abs_inverse, abs_induct], thy')
schirmer@14700
  1286
  end;
schirmer@14700
  1287
wenzelm@17261
  1288
fun mixit convs refls =
schirmer@15215
  1289
  let fun f ((res,lhs,rhs),refl) = ((refl,List.revAppend (lhs,refl::tl rhs))::res,hd rhs::lhs,tl rhs);
skalberg@15570
  1290
  in #1 (Library.foldl f (([],[],convs),refls)) end;
schirmer@15215
  1291
wenzelm@17261
  1292
fun extension_definition full name fields names alphas zeta moreT more vars thy =
wenzelm@17261
  1293
  let
schirmer@14700
  1294
    val base = Sign.base_name;
schirmer@14700
  1295
    val fieldTs = (map snd fields);
schirmer@15215
  1296
    val alphas_zeta = alphas@[zeta];
schirmer@15215
  1297
    val alphas_zetaTs = map (fn n => TFree (n, HOLogic.typeS)) alphas_zeta;
schirmer@15215
  1298
    val vT = TFree (variant alphas_zeta "'v", HOLogic.typeS);
schirmer@14700
  1299
    val extT_name = suffix ext_typeN name
schirmer@14700
  1300
    val extT = Type (extT_name, alphas_zetaTs);
schirmer@14700
  1301
    val repT = foldr1 HOLogic.mk_prodT (fieldTs@[moreT]);
schirmer@14700
  1302
    val fields_more = fields@[(full moreN,moreT)];
schirmer@15215
  1303
    val fields_moreTs = fieldTs@[moreT];
schirmer@14700
  1304
    val bfields_more = map (apfst base) fields_more;
schirmer@14700
  1305
    val r = Free (rN,extT)
schirmer@14700
  1306
    val len = length fields;
schirmer@14700
  1307
    val idxms = 0 upto len;
schirmer@14700
  1308
schirmer@14700
  1309
    (* prepare declarations and definitions *)
wenzelm@17261
  1310
schirmer@14700
  1311
    (*fields constructor*)
schirmer@15215
  1312
    val ext_decl = (mk_extC (name,extT) fields_moreTs);
wenzelm@17261
  1313
    (*
wenzelm@17261
  1314
    val ext_spec = Const ext_decl :==
wenzelm@17261
  1315
         (foldr (uncurry lambda)
wenzelm@17261
  1316
            (mk_Abs name repT extT $ (foldr1 HOLogic.mk_prod (vars@[more]))) (vars@[more]))
wenzelm@17261
  1317
    *)
wenzelm@17261
  1318
    val ext_spec = list_comb (Const ext_decl,vars@[more]) :==
schirmer@15215
  1319
         (mk_Abs name repT extT $ (foldr1 HOLogic.mk_prod (vars@[more])));
schirmer@15215
  1320
wenzelm@17261
  1321
    fun mk_ext args = list_comb (Const ext_decl, args);
wenzelm@17261
  1322
wenzelm@17261
  1323
    (*destructors*)
schirmer@16379
  1324
    val _ = timing_msg "record extension preparing definitions";
schirmer@14700
  1325
    val dest_decls = map (mk_selC extT o (apfst (suffix ext_dest))) bfields_more;
schirmer@14700
  1326
schirmer@14700
  1327
    fun mk_dest_spec (i, (c,T)) =
schirmer@14700
  1328
      let val snds = (funpow i HOLogic.mk_snd (mk_Rep name repT extT $ r))
schirmer@14700
  1329
      in Const (mk_selC extT (suffix ext_dest c,T))
schirmer@14700
  1330
         :== (lambda r (if i=len then snds else HOLogic.mk_fst snds))
schirmer@14700
  1331
      end;
schirmer@14700
  1332
    val dest_specs =
schirmer@14700
  1333
      ListPair.map mk_dest_spec (idxms, fields_more);
wenzelm@17261
  1334
schirmer@16379
  1335
    (*updates*)
schirmer@15215
  1336
    val upd_decls = map (mk_updC updN extT) bfields_more;
schirmer@15215
  1337
    fun mk_upd_spec (c,T) =
schirmer@15215
  1338
      let
wenzelm@17261
  1339
        val args = map (fn (n,nT) => if n=c then Free (base c,T)
wenzelm@17261
  1340
                                     else (mk_sel r (suffix ext_dest n,nT)))
schirmer@15215
  1341
                       fields_more;
schirmer@15215
  1342
      in Const (mk_updC updN extT (c,T))$(Free (base c,T))$r
schirmer@15215
  1343
          :== mk_ext args
schirmer@15215
  1344
      end;
schirmer@15215
  1345
    val upd_specs = map mk_upd_spec fields_more;
wenzelm@17261
  1346
schirmer@14700
  1347
    (* 1st stage: defs_thy *)
schirmer@16379
  1348
    fun mk_defs () =
wenzelm@17261
  1349
      thy
schirmer@14700
  1350
        |> extension_typedef name repT (alphas@[zeta])
haftmann@18377
  1351
        ||> Theory.add_consts_i
schirmer@15215
  1352
              (map Syntax.no_syn ((apfst base ext_decl)::dest_decls@upd_decls))
haftmann@18377
  1353
        ||>> PureThy.add_defs_i false (map Thm.no_attributes (ext_spec::dest_specs))
haftmann@18377
  1354
        ||>> PureThy.add_defs_i false (map Thm.no_attributes upd_specs)
haftmann@18377
  1355
        |> swap
schirmer@16379
  1356
    val (defs_thy, (([abs_inject, abs_inverse, abs_induct],ext_def::dest_defs),upd_defs)) =
schirmer@16379
  1357
        timeit_msg "record extension type/selector/update defs:" mk_defs;
wenzelm@17261
  1358
wenzelm@17261
  1359
schirmer@14700
  1360
    (* prepare propositions *)
schirmer@16379
  1361
    val _ = timing_msg "record extension preparing propositions";
schirmer@14700
  1362
    val vars_more = vars@[more];
schirmer@14700
  1363
    val named_vars_more = (names@[full moreN])~~vars_more;
schirmer@15015
  1364
    val variants = map (fn (Free (x,_))=>x) vars_more;
schirmer@15215
  1365
    val ext = mk_ext vars_more;
schirmer@14700
  1366
    val s     = Free (rN, extT);
schirmer@15215
  1367
    val w     = Free (wN, extT);
schirmer@15015
  1368
    val P = Free (variant variants "P", extT-->HOLogic.boolT);
schirmer@15015
  1369
    val C = Free (variant variants "C", HOLogic.boolT);
wenzelm@17261
  1370
schirmer@14700
  1371
    val inject_prop =
schirmer@14700
  1372
      let val vars_more' = map (fn (Free (x,T)) => Free (x ^ "'",T)) vars_more;
wenzelm@17261
  1373
      in All (map dest_Free (vars_more@vars_more'))
wenzelm@17261
  1374
          ((HOLogic.eq_const extT $
wenzelm@17261
  1375
            mk_ext vars_more$mk_ext vars_more')
schirmer@14700
  1376
           ===
schirmer@14700
  1377
           foldr1 HOLogic.mk_conj (map HOLogic.mk_eq (vars_more ~~ vars_more')))
schirmer@14700
  1378
      end;
wenzelm@17261
  1379
schirmer@14700
  1380
    val induct_prop =
schirmer@15012
  1381
      (All (map dest_Free vars_more) (Trueprop (P $ ext)), Trueprop (P $ s));
schirmer@15012
  1382
schirmer@14700
  1383
    val cases_prop =
wenzelm@17261
  1384
      (All (map dest_Free vars_more)
wenzelm@17261
  1385
        (Trueprop (HOLogic.mk_eq (s,ext)) ==> Trueprop C))
schirmer@14700
  1386
      ==> Trueprop C;
schirmer@14700
  1387
wenzelm@17261
  1388
    (*destructors*)
schirmer@14700
  1389
    val dest_conv_props =
schirmer@14700
  1390
       map (fn (c, x as Free (_,T)) => mk_sel ext (suffix ext_dest c,T) === x) named_vars_more;
schirmer@14700
  1391
schirmer@15215
  1392
    (*updates*)
schirmer@15215
  1393
    fun mk_upd_prop (i,(c,T)) =
wenzelm@17261
  1394
      let val x' = Free (variant variants (base c ^ "'"),T)
haftmann@18011
  1395
          val args' = nth_update (i, x') vars_more
schirmer@15215
  1396
      in mk_upd updN c x' ext === mk_ext args'  end;
schirmer@15215
  1397
    val upd_conv_props = ListPair.map mk_upd_prop (idxms, fields_more);
schirmer@15215
  1398
schirmer@15015
  1399
    val surjective_prop =
wenzelm@17261
  1400
      let val args =
schirmer@15015
  1401
           map (fn (c, Free (_,T)) => mk_sel s (suffix ext_dest c,T)) named_vars_more;
schirmer@15215
  1402
      in s === mk_ext args end;
schirmer@15015
  1403
schirmer@15015
  1404
    val split_meta_prop =
schirmer@15015
  1405
      let val P = Free (variant variants "P", extT-->Term.propT) in
wenzelm@17261
  1406
        Logic.mk_equals
schirmer@15015
  1407
         (All [dest_Free s] (P $ s), All (map dest_Free vars_more) (P $ ext))
wenzelm@17261
  1408
      end;
schirmer@15015
  1409
wenzelm@17510
  1410
    fun prove stndrd = quick_and_dirty_prove stndrd defs_thy;
wenzelm@17510
  1411
    val prove_standard = quick_and_dirty_prove true defs_thy;
schirmer@15215
  1412
    fun prove_simp stndrd simps =
schirmer@14700
  1413
      let val tac = simp_all_tac HOL_ss simps
schirmer@15215
  1414
      in fn prop => prove stndrd [] prop (K tac) end;
wenzelm@17261
  1415
schirmer@15215
  1416
    fun inject_prf () = (prove_simp true [ext_def,abs_inject,Pair_eq] inject_prop);
schirmer@15012
  1417
    val inject = timeit_msg "record extension inject proof:" inject_prf;
schirmer@14700
  1418
schirmer@15012
  1419
    fun induct_prf () =
schirmer@15012
  1420
      let val (assm, concl) = induct_prop
schirmer@15015
  1421
      in prove_standard [assm] concl (fn prems =>
wenzelm@17261
  1422
           EVERY [try_param_tac rN abs_induct 1,
schirmer@15012
  1423
                  simp_tac (HOL_ss addsimps [split_paired_all]) 1,
schirmer@15012
  1424
                  resolve_tac (map (rewrite_rule [ext_def]) prems) 1])
schirmer@15012
  1425
      end;
schirmer@15012
  1426
    val induct = timeit_msg "record extension induct proof:" induct_prf;
schirmer@14700
  1427
schirmer@15215
  1428
    fun cases_prf_opt () =
wenzelm@17261
  1429
      let
schirmer@15215
  1430
        val sg = (sign_of defs_thy);
schirmer@15215
  1431
        val (_$(Pvar$_)) = concl_of induct;
wenzelm@17261
  1432
        val ind = cterm_instantiate
wenzelm@17261
  1433
                    [(cterm_of sg Pvar, cterm_of sg
schirmer@15215
  1434
                            (lambda w (HOLogic.imp$HOLogic.mk_eq(r,w)$C)))]
schirmer@15215
  1435
                    induct;
schirmer@15215
  1436
        in standard (ObjectLogic.rulify (mp OF [ind, refl])) end;
schirmer@15215
  1437
schirmer@15215
  1438
    fun cases_prf_noopt () =
schirmer@15015
  1439
        prove_standard [] cases_prop (fn prems =>
schirmer@14700
  1440
         EVERY [asm_full_simp_tac (HOL_basic_ss addsimps [atomize_all, atomize_imp]) 1,
schirmer@14700
  1441
                try_param_tac rN induct 1,
schirmer@14700
  1442
                rtac impI 1,
schirmer@14700
  1443
                REPEAT (etac allE 1),
schirmer@14700
  1444
                etac mp 1,
schirmer@14700
  1445
                rtac refl 1])
schirmer@15215
  1446
schirmer@15215
  1447
    val cases_prf = quick_and_dirty_prf cases_prf_noopt cases_prf_opt;
schirmer@15012
  1448
    val cases = timeit_msg "record extension cases proof:" cases_prf;
wenzelm@17261
  1449
wenzelm@17261
  1450
    fun dest_convs_prf () = map (prove_simp false
schirmer@15215
  1451
                      ([ext_def,abs_inverse]@Pair_sel_convs@dest_defs)) dest_conv_props;
schirmer@15012
  1452
    val dest_convs = timeit_msg "record extension dest_convs proof:" dest_convs_prf;
schirmer@15215
  1453
    fun dest_convs_standard_prf () = map standard dest_convs;
schirmer@15215
  1454
wenzelm@17261
  1455
    val dest_convs_standard =
wenzelm@17261
  1456
        timeit_msg "record extension dest_convs_standard proof:" dest_convs_standard_prf;
wenzelm@17261
  1457
wenzelm@17261
  1458
    fun upd_convs_prf_noopt () = map (prove_simp true (dest_convs_standard@upd_defs))
schirmer@15215
  1459
                                       upd_conv_props;
schirmer@15215
  1460
    fun upd_convs_prf_opt () =
wenzelm@17261
  1461
      let
schirmer@15215
  1462
        val sg = sign_of defs_thy;
wenzelm@17261
  1463
        fun mkrefl (c,T) = Thm.reflexive
wenzelm@17261
  1464
                            (cterm_of sg (Free (variant variants (base c ^ "'"),T)));
schirmer@15215
  1465
        val refls = map mkrefl fields_more;
schirmer@15215
  1466
        val constr_refl = Thm.reflexive (cterm_of sg (head_of ext));
schirmer@15913
  1467
        val dest_convs' = map mk_meta_eq dest_convs;
wenzelm@17261
  1468
schirmer@15215
  1469
        fun mkthm (udef,(fld_refl,thms)) =
skalberg@15570
  1470
          let val bdyeq = Library.foldl (uncurry Thm.combination) (constr_refl,thms);
schirmer@15215
  1471
               (* (|N=N (|N=N,M=M,K=K,more=more|)
schirmer@15215
  1472
                    M=M (|N=N,M=M,K=K,more=more|)
schirmer@15215
  1473
                    K=K'
schirmer@15215
  1474
                    more = more (|N=N,M=M,K=K,more=more|) =
schirmer@15215
  1475
                  (|N=N,M=M,K=K',more=more|)
schirmer@15215
  1476
                *)
schirmer@15215
  1477
              val (_$(_$v$r)$_) = prop_of udef;
schirmer@15215
  1478
              val (_$v'$_) = prop_of fld_refl;
wenzelm@17261
  1479
              val udef' = cterm_instantiate
schirmer@15215
  1480
                            [(cterm_of sg v,cterm_of sg v'),
schirmer@15215
  1481
                             (cterm_of sg r,cterm_of sg ext)] udef;
wenzelm@17261
  1482
          in  standard (Thm.transitive udef' bdyeq) end;
wenzelm@17921
  1483
      in map mkthm (rev upd_defs  ~~ (mixit dest_convs' refls)) end;
wenzelm@17261
  1484
schirmer@15215
  1485
    val upd_convs_prf = quick_and_dirty_prf upd_convs_prf_noopt upd_convs_prf_opt;
schirmer@15215
  1486
wenzelm@17261
  1487
    val upd_convs =
wenzelm@17261
  1488
         timeit_msg "record extension upd_convs proof:" upd_convs_prf;
schirmer@15012
  1489
wenzelm@17261
  1490
    fun surjective_prf () =
schirmer@15015
  1491
      prove_standard [] surjective_prop (fn prems =>
schirmer@15015
  1492
          (EVERY [try_param_tac rN induct 1,
schirmer@15215
  1493
                  simp_tac (HOL_basic_ss addsimps dest_convs_standard) 1]));
schirmer@15015
  1494
    val surjective = timeit_msg "record extension surjective proof:" surjective_prf;
schirmer@15015
  1495
schirmer@15015
  1496
    fun split_meta_prf () =
schirmer@15015
  1497
        prove_standard [] split_meta_prop (fn prems =>
wenzelm@17960
  1498
         EVERY [rtac equal_intr_rule 1, norm_hhf_tac 1,
wenzelm@17960
  1499
                etac meta_allE 1, atac 1,
schirmer@15015
  1500
                rtac (prop_subst OF [surjective]) 1,
wenzelm@17960
  1501
                REPEAT (etac meta_allE 1), atac 1]);
schirmer@15015
  1502
    val split_meta = timeit_msg "record extension split_meta proof:" split_meta_prf;
schirmer@15015
  1503
haftmann@18377
  1504
    val (([inject',induct',cases',surjective',split_meta'], [dest_convs',upd_convs']),
haftmann@18377
  1505
      thm_thy) =
wenzelm@17261
  1506
      defs_thy
wenzelm@17261
  1507
      |> (PureThy.add_thms o map Thm.no_attributes)
schirmer@14700
  1508
           [("ext_inject", inject),
schirmer@14700
  1509
            ("ext_induct", induct),
schirmer@15015
  1510
            ("ext_cases", cases),
schirmer@15015
  1511
            ("ext_surjective", surjective),
schirmer@15015
  1512
            ("ext_split", split_meta)]
haftmann@18377
  1513
      ||>> (PureThy.add_thmss o map Thm.no_attributes)
wenzelm@17261
  1514
              [("dest_convs",dest_convs_standard),("upd_convs",upd_convs)]
schirmer@14700
  1515
schirmer@15215
  1516
  in (thm_thy,extT,induct',inject',dest_convs',split_meta',upd_convs')
schirmer@14700
  1517
  end;
wenzelm@17261
  1518
schirmer@14700
  1519
fun chunks []      []   = []
schirmer@14700
  1520
  | chunks []      xs   = [xs]
skalberg@15570
  1521
  | chunks (l::ls) xs  = Library.take (l,xs)::chunks ls (Library.drop (l,xs));
wenzelm@17261
  1522
schirmer@14700
  1523
fun chop_last [] = error "last: list should not be empty"
schirmer@14700
  1524
  | chop_last [x] = ([],x)
schirmer@14700
  1525
  | chop_last (x::xs) = let val (tl,l) = chop_last xs in (x::tl,l) end;
wenzelm@17261
  1526
schirmer@14700
  1527
fun subst_last s []      = error "subst_last: list should not be empty"
schirmer@14700
  1528
  | subst_last s ([x])   = [s]
schirmer@14700
  1529
  | subst_last s (x::xs) = (x::subst_last s xs);
schirmer@14700
  1530
schirmer@14700
  1531
(* mk_recordT builds up the record type from the current extension tpye extT and a list
wenzelm@17261
  1532
 * of parent extensions, starting with the root of the record hierarchy
wenzelm@17261
  1533
*)
wenzelm@17261
  1534
fun mk_recordT extT parent_exts =
skalberg@15574
  1535
    foldr (fn ((parent,Ts),T) => Type (parent, subst_last T Ts)) extT parent_exts;
schirmer@14700
  1536
schirmer@15215
  1537
schirmer@15215
  1538
schirmer@15215
  1539
fun obj_to_meta_all thm =
schirmer@15215
  1540
  let
wenzelm@17261
  1541
    fun E thm = case (SOME (spec OF [thm]) handle THM _ => NONE) of
skalberg@15531
  1542
                  SOME thm' => E thm'
skalberg@15531
  1543
                | NONE => thm;
schirmer@15215
  1544
    val th1 = E thm;
schirmer@15215
  1545
    val th2 = Drule.forall_intr_vars th1;
schirmer@15215
  1546
  in th2 end;
schirmer@15215
  1547
schirmer@15215
  1548
fun meta_to_obj_all thm =
schirmer@15215
  1549
  let
schirmer@15215
  1550
    val {sign, prop, ...} = rep_thm thm;
schirmer@15215
  1551
    val params = Logic.strip_params prop;
schirmer@15215
  1552
    val concl = HOLogic.dest_Trueprop (Logic.strip_assums_concl prop);
schirmer@15215
  1553
    val ct = cterm_of sign
schirmer@15215
  1554
      (HOLogic.mk_Trueprop (HOLogic.list_all (params, concl)));
schirmer@15215
  1555
    val thm' = Seq.hd (REPEAT (rtac allI 1) (Thm.trivial ct));
schirmer@15215
  1556
  in
schirmer@15215
  1557
    Thm.implies_elim thm' thm
schirmer@15215
  1558
  end;
schirmer@15215
  1559
schirmer@15215
  1560
schirmer@15215
  1561
schirmer@14700
  1562
(* record_definition *)
wenzelm@17261
  1563
fun record_definition (args, bname) parent (parents: parent_info list) raw_fields thy =
schirmer@14702
  1564
  (* smlnj needs type annotation of parents *)
schirmer@14700
  1565
  let
schirmer@14700
  1566
    val sign = Theory.sign_of thy;
schirmer@14700
  1567
schirmer@14700
  1568
    val alphas = map fst args;
schirmer@14700
  1569
    val name = Sign.full_name sign bname;
schirmer@14700
  1570
    val full = Sign.full_name_path sign bname;
schirmer@14700
  1571
    val base = Sign.base_name;
schirmer@14700
  1572
schirmer@14700
  1573
    val (bfields, field_syntax) = split_list (map (fn (x, T, mx) => ((x, T), mx)) raw_fields);
schirmer@14700
  1574
skalberg@15570
  1575
    val parent_fields = List.concat (map #fields parents);
schirmer@14700
  1576
    val parent_chunks = map (length o #fields) parents;
schirmer@14700
  1577
    val parent_names = map fst parent_fields;
schirmer@14700
  1578
    val parent_types = map snd parent_fields;
schirmer@14700
  1579
    val parent_fields_len = length parent_fields;
schirmer@15215
  1580
    val parent_variants = variantlist (map base parent_names, [moreN, rN, rN ^ "'", wN]);
schirmer@14700
  1581
    val parent_vars = ListPair.map Free (parent_variants, parent_types);
schirmer@14700
  1582
    val parent_len = length parents;
schirmer@14700
  1583
    val parents_idx = (map #name parents) ~~ (0 upto (parent_len - 1));
schirmer@14700
  1584
schirmer@14700
  1585
    val fields = map (apfst full) bfields;
schirmer@14700
  1586
    val names = map fst fields;
schirmer@14700
  1587
    val extN = full bname;
schirmer@14700
  1588
    val types = map snd fields;
skalberg@15574
  1589
    val alphas_fields = foldr add_typ_tfree_names [] types;
wenzelm@17261
  1590
    val alphas_ext = alphas inter alphas_fields;
schirmer@14700
  1591
    val len = length fields;
schirmer@15215
  1592
    val variants = variantlist (map fst bfields, moreN::rN::rN ^ "'"::wN::parent_variants);
schirmer@14700
  1593
    val vars = ListPair.map Free (variants, types);
schirmer@14700
  1594
    val named_vars = names ~~ vars;
schirmer@14700
  1595
    val idxs = 0 upto (len - 1);
schirmer@14700
  1596
    val idxms = 0 upto len;
schirmer@14700
  1597
schirmer@14700
  1598
    val all_fields = parent_fields @ fields;
schirmer@14700
  1599
    val all_names = parent_names @ names;
schirmer@14700
  1600
    val all_types = parent_types @ types;
schirmer@14700
  1601
    val all_len = parent_fields_len + len;
schirmer@14700
  1602
    val all_variants = parent_variants @ variants;
schirmer@14700
  1603
    val all_vars = parent_vars @ vars;
schirmer@14700
  1604
    val all_named_vars = (parent_names ~~ parent_vars) @ named_vars;
schirmer@14700
  1605
schirmer@14700
  1606
wenzelm@17261
  1607
    val zeta = variant alphas "'z";
schirmer@14700
  1608
    val moreT = TFree (zeta, HOLogic.typeS);
schirmer@14700
  1609
    val more = Free (moreN, moreT);
schirmer@14700
  1610
    val full_moreN = full moreN;
schirmer@14700
  1611
    val bfields_more = bfields @ [(moreN,moreT)];
schirmer@14700
  1612
    val fields_more = fields @ [(full_moreN,moreT)];
schirmer@14700
  1613
    val vars_more = vars @ [more];
schirmer@14700
  1614
    val named_vars_more = named_vars @[(full_moreN,more)];
schirmer@14700
  1615
    val all_vars_more = all_vars @ [more];
schirmer@14700
  1616
    val all_named_vars_more = all_named_vars @ [(full_moreN,more)];
wenzelm@17261
  1617
schirmer@14700
  1618
    (* 1st stage: extension_thy *)
schirmer@15215
  1619
    val (extension_thy,extT,ext_induct,ext_inject,ext_dest_convs,ext_split,u_convs) =
schirmer@14700
  1620
      thy
schirmer@14700
  1621
      |> Theory.add_path bname
schirmer@14700
  1622
      |> extension_definition full extN fields names alphas_ext zeta moreT more vars;
schirmer@14700
  1623
wenzelm@17261
  1624
    val _ = timing_msg "record preparing definitions";
schirmer@14700
  1625
    val Type extension_scheme = extT;
schirmer@14700
  1626
    val extension_name = unsuffix ext_typeN (fst extension_scheme);
wenzelm@17261
  1627
    val extension = let val (n,Ts) = extension_scheme in (n,subst_last HOLogic.unitT Ts) end;
wenzelm@17261
  1628
    val extension_names =
schirmer@14700
  1629
         (map ((unsuffix ext_typeN) o fst o #extension) parents) @ [extN];
skalberg@15570
  1630
    val extension_id = Library.foldl (op ^) ("",extension_names);
schirmer@14700
  1631
wenzelm@17261
  1632
schirmer@14700
  1633
    fun rec_schemeT n = mk_recordT extT (map #extension (prune n parents));
schirmer@14700
  1634
    val rec_schemeT0 = rec_schemeT 0;
schirmer@14700
  1635
wenzelm@17261
  1636
    fun recT n =
schirmer@14700
  1637
      let val (c,Ts) = extension
schirmer@14700
  1638
      in mk_recordT (Type (c,subst_last HOLogic.unitT Ts))(map #extension (prune n parents))
schirmer@14700
  1639
      end;
schirmer@14700
  1640
    val recT0 = recT 0;
wenzelm@17261
  1641
schirmer@14700
  1642
    fun mk_rec args n =
schirmer@14700
  1643
      let val (args',more) = chop_last args;
wenzelm@17261
  1644
          fun mk_ext' (((name,T),args),more) = mk_ext (name,T) (args@[more]);
wenzelm@17261
  1645
          fun build Ts =
skalberg@15574
  1646
           foldr mk_ext' more (prune n (extension_names ~~ Ts ~~ (chunks parent_chunks args')))
wenzelm@17261
  1647
      in
wenzelm@17261
  1648
        if more = HOLogic.unit
wenzelm@17261
  1649
        then build (map recT (0 upto parent_len))
schirmer@14700
  1650
        else build (map rec_schemeT (0 upto parent_len))
schirmer@14700
  1651
      end;
wenzelm@17261
  1652
schirmer@14700
  1653
    val r_rec0 = mk_rec all_vars_more 0;
schirmer@14700
  1654
    val r_rec_unit0 = mk_rec (all_vars@[HOLogic.unit]) 0;
schirmer@14700
  1655
schirmer@14700
  1656
    fun r n = Free (rN, rec_schemeT n)
schirmer@14700
  1657
    val r0 = r 0;
schirmer@14700
  1658
    fun r_unit n = Free (rN, recT n)
schirmer@14700
  1659
    val r_unit0 = r_unit 0;
schirmer@15215
  1660
    val w = Free (wN, rec_schemeT 0)
schirmer@14700
  1661
schirmer@14700
  1662
    (* prepare print translation functions *)
schirmer@14700
  1663
    val field_tr's =
skalberg@15570
  1664
      print_translation (distinct (List.concat (map NameSpace.accesses' (full_moreN :: names))));
schirmer@14700
  1665
schirmer@14700
  1666
    val adv_ext_tr's =
schirmer@14700
  1667
    let
schirmer@14700
  1668
      val trnames = NameSpace.accesses' extN;
schirmer@14700
  1669
    in map (gen_record_tr') trnames end;
schirmer@14700
  1670
schirmer@14700
  1671
    val adv_record_type_abbr_tr's =
schirmer@14700
  1672
      let val trnames = NameSpace.accesses' (hd extension_names);
schirmer@14700
  1673
          val lastExt = (unsuffix ext_typeN (fst extension));
schirmer@17190
  1674
      in map (gen_record_type_abbr_tr' name alphas zeta lastExt rec_schemeT0) trnames
schirmer@14700
  1675
      end;
schirmer@14700
  1676
schirmer@14700
  1677
    val adv_record_type_tr's =
schirmer@14700
  1678
      let val trnames = if parent_len > 0 then NameSpace.accesses' extN else [];
schirmer@14700
  1679
                        (* avoid conflict with adv_record_type_abbr_tr's *)
schirmer@14700
  1680
      in map (gen_record_type_tr') trnames
schirmer@14700
  1681
      end;
schirmer@14700
  1682
wenzelm@17261
  1683
schirmer@14700
  1684
    (* prepare declarations *)
schirmer@14700
  1685
schirmer@14700
  1686
    val sel_decls = map (mk_selC rec_schemeT0) bfields_more;
schirmer@15215
  1687
    val upd_decls = map (mk_updC updateN rec_schemeT0) bfields_more;
schirmer@14700
  1688
    val make_decl = (makeN, all_types ---> recT0);
wenzelm@17261
  1689
    val fields_decl = (fields_selN, types ---> Type extension);
schirmer@14700
  1690
    val extend_decl = (extendN, recT0 --> moreT --> rec_schemeT0);
schirmer@14700
  1691
    val truncate_decl = (truncateN, rec_schemeT0 --> recT0);
schirmer@14700
  1692
schirmer@14700
  1693
    (* prepare definitions *)
wenzelm@17261
  1694
wenzelm@17261
  1695
    fun parent_more s =
wenzelm@17261
  1696
         if null parents then s
wenzelm@16124
  1697
         else mk_sel s (NameSpace.qualified (#name (List.last parents)) moreN, extT);
schirmer@14700
  1698
schirmer@14700
  1699
    fun parent_more_upd v s =
wenzelm@17261
  1700
      if null parents then v
wenzelm@16124
  1701
      else let val mp = NameSpace.qualified (#name (List.last parents)) moreN;
schirmer@15215
  1702
           in mk_upd updateN mp v s end;
wenzelm@17261
  1703
schirmer@14700
  1704
    (*record (scheme) type abbreviation*)
schirmer@14700
  1705
    val recordT_specs =
schirmer@14700
  1706
      [(suffix schemeN bname, alphas @ [zeta], rec_schemeT0, Syntax.NoSyn),
wenzelm@17261
  1707
        (bname, alphas, recT0, Syntax.NoSyn)];
schirmer@14700
  1708
wenzelm@17261
  1709
    (*selectors*)
wenzelm@17261
  1710
    fun mk_sel_spec (c,T) =
wenzelm@17261
  1711
         Const (mk_selC rec_schemeT0 (c,T))
schirmer@14700
  1712
          :== (lambda r0 (Const (mk_selC extT (suffix ext_dest c,T))$parent_more r0));
schirmer@14700
  1713
    val sel_specs = map mk_sel_spec fields_more;
schirmer@14700
  1714
schirmer@14700
  1715
    (*updates*)
schirmer@15215
  1716
schirmer@14700
  1717
    fun mk_upd_spec (c,T) =
wenzelm@17261
  1718
      let
wenzelm@17261
  1719
        val new = mk_upd updN c (Free (base c,T)) (parent_more r0);
schirmer@15215
  1720
      in Const (mk_updC updateN rec_schemeT0 (c,T))$(Free (base c,T))$r0
schirmer@15215
  1721
          :== (parent_more_upd new r0)
schirmer@14700
  1722
      end;
wenzelm@17261
  1723
    val upd_specs = map mk_upd_spec fields_more;
schirmer@14700
  1724
schirmer@14700
  1725
    (*derived operations*)
schirmer@14700
  1726
    val make_spec = Const (full makeN, all_types ---> recT0) $$ all_vars :==
schirmer@14700
  1727
      mk_rec (all_vars @ [HOLogic.unit]) 0;
schirmer@14700
  1728
    val fields_spec = Const (full fields_selN, types ---> Type extension) $$ vars :==
schirmer@14700
  1729
      mk_rec (all_vars @ [HOLogic.unit]) parent_len;
wenzelm@17261
  1730
    val extend_spec =
schirmer@14700
  1731
      Const (full extendN, recT0-->moreT-->rec_schemeT0) $ r_unit0 $ more :==
schirmer@14700
  1732
      mk_rec ((map (mk_sel r_unit0) all_fields) @ [more]) 0;
schirmer@14700
  1733
    val truncate_spec = Const (full truncateN, rec_schemeT0 --> recT0) $ r0 :==
schirmer@14700
  1734
      mk_rec ((map (mk_sel r0) all_fields) @ [HOLogic.unit]) 0;
schirmer@14700
  1735
schirmer@14700
  1736
    (* 2st stage: defs_thy *)
wenzelm@17261
  1737
schirmer@16379
  1738
    fun mk_defs () =
schirmer@16379
  1739
      extension_thy
wenzelm@17261
  1740
        |> Theory.add_trfuns
schirmer@14700
  1741
            ([],[],field_tr's, [])
wenzelm@17261
  1742
        |> Theory.add_advanced_trfuns
schirmer@14700
  1743
            ([],[],adv_ext_tr's @ adv_record_type_tr's @ adv_record_type_abbr_tr's,[])
schirmer@14700
  1744
        |> Theory.parent_path
schirmer@14700
  1745
        |> Theory.add_tyabbrs_i recordT_specs
schirmer@14700
  1746
        |> Theory.add_path bname
schirmer@14700
  1747
        |> Theory.add_consts_i
haftmann@18330
  1748
            (map2 (fn (x, T) => fn mx => (x, T, mx)) sel_decls (field_syntax @ [Syntax.NoSyn]))
wenzelm@17261
  1749
        |> (Theory.add_consts_i o map Syntax.no_syn)
schirmer@14700
  1750
            (upd_decls @ [make_decl, fields_decl, extend_decl, truncate_decl])
haftmann@18377
  1751
        |> ((PureThy.add_defs_i false o map Thm.no_attributes) sel_specs)
haftmann@18377
  1752
        ||>> ((PureThy.add_defs_i false o map Thm.no_attributes) upd_specs)
haftmann@18377
  1753
        ||>> ((PureThy.add_defs_i false o map Thm.no_attributes)
haftmann@18377
  1754
               [make_spec, fields_spec, extend_spec, truncate_spec])
haftmann@18377
  1755
        |> swap
schirmer@16379
  1756
    val (defs_thy,((sel_defs,upd_defs),derived_defs)) =
schirmer@16379
  1757
        timeit_msg "record trfuns/tyabbrs/selectors/updates/make/fields/extend/truncate defs:"
schirmer@16379
  1758
         mk_defs;
wenzelm@17261
  1759
schirmer@14700
  1760
schirmer@14700
  1761
    (* prepare propositions *)
wenzelm@17261
  1762
    val _ = timing_msg "record preparing propositions";
schirmer@14700
  1763
    val P = Free (variant all_variants "P", rec_schemeT0-->HOLogic.boolT);
wenzelm@17261
  1764
    val C = Free (variant all_variants "C", HOLogic.boolT);
schirmer@14700
  1765
    val P_unit = Free (variant all_variants "P", recT0-->HOLogic.boolT);
schirmer@14700
  1766
wenzelm@17261
  1767
    (*selectors*)
schirmer@14700
  1768
    val sel_conv_props =
schirmer@14700
  1769
       map (fn (c, x as Free (_,T)) => mk_sel r_rec0 (c,T) === x) named_vars_more;
schirmer@14700
  1770
wenzelm@17261
  1771
    (*updates*)
schirmer@14700
  1772
    fun mk_upd_prop (i,(c,T)) =
wenzelm@17261
  1773
      let val x' = Free (variant all_variants (base c ^ "'"),T)
haftmann@18011
  1774
          val args' = nth_update (parent_fields_len + i, x') all_vars_more
schirmer@15215
  1775
      in mk_upd updateN c x' r_rec0 === mk_rec args' 0  end;
schirmer@14700
  1776
    val upd_conv_props = ListPair.map mk_upd_prop (idxms, fields_more);
schirmer@14700
  1777
schirmer@14700
  1778
    (*induct*)
schirmer@14700
  1779
    val induct_scheme_prop =
schirmer@14700
  1780
      All (map dest_Free all_vars_more) (Trueprop (P $ r_rec0)) ==> Trueprop (P $ r0);
wenzelm@17261
  1781
    val induct_prop =
schirmer@14700
  1782
      (All (map dest_Free all_vars) (Trueprop (P_unit $ r_rec_unit0)),
schirmer@14700
  1783
       Trueprop (P_unit $ r_unit0));
schirmer@14700
  1784
schirmer@14700
  1785
    (*surjective*)
schirmer@14700
  1786
    val surjective_prop =
schirmer@14700
  1787
      let val args = map (fn (c,Free (_,T)) => mk_sel r0 (c,T)) all_named_vars_more
schirmer@14700
  1788
      in r0 === mk_rec args 0 end;
wenzelm@17261
  1789
schirmer@14700
  1790
    (*cases*)
schirmer@14700
  1791
    val cases_scheme_prop =
wenzelm@17261
  1792
      (All (map dest_Free all_vars_more)
wenzelm@17261
  1793
        (Trueprop (HOLogic.mk_eq (r0,r_rec0)) ==> Trueprop C))
schirmer@14700
  1794
      ==> Trueprop C;
schirmer@14700
  1795
schirmer@14700
  1796
    val cases_prop =
wenzelm@17261
  1797
      (All (map dest_Free all_vars)
wenzelm@17261
  1798
        (Trueprop (HOLogic.mk_eq (r_unit0,r_rec_unit0)) ==> Trueprop C))
schirmer@14700
  1799
       ==> Trueprop C;
schirmer@14700
  1800
schirmer@14700
  1801
    (*split*)
schirmer@14700
  1802
    val split_meta_prop =
schirmer@14700
  1803
      let val P = Free (variant all_variants "P", rec_schemeT0-->Term.propT) in
wenzelm@17261
  1804
        Logic.mk_equals
schirmer@14700
  1805
         (All [dest_Free r0] (P $ r0), All (map dest_Free all_vars_more) (P $ r_rec0))
wenzelm@17261
  1806
      end;
schirmer@14700
  1807
schirmer@14700
  1808
    val split_object_prop =
skalberg@15574
  1809
      let fun ALL vs t = foldr (fn ((v,T),t) => HOLogic.mk_all (v,T,t)) t vs
schirmer@14700
  1810
      in (ALL [dest_Free r0] (P $ r0)) === (ALL (map dest_Free all_vars_more) (P $ r_rec0))
schirmer@14700
  1811
      end;
schirmer@14700
  1812
schirmer@14700
  1813
schirmer@14700
  1814
    val split_ex_prop =
skalberg@15574
  1815
      let fun EX vs t = foldr (fn ((v,T),t) => HOLogic.mk_exists (v,T,t)) t vs
schirmer@14700
  1816
      in (EX [dest_Free r0] (P $ r0)) === (EX (map dest_Free all_vars_more) (P $ r_rec0))
schirmer@14700
  1817
      end;
schirmer@14700
  1818
schirmer@14700
  1819
    (*equality*)
schirmer@14700
  1820
    val equality_prop =
wenzelm@17261
  1821
      let
wenzelm@17261
  1822
        val s' = Free (rN ^ "'", rec_schemeT0)
wenzelm@17261
  1823
        fun mk_sel_eq (c,Free (_,T)) =  mk_sel r0 (c,T) === mk_sel s' (c,T)
schirmer@14700
  1824
        val seleqs = map mk_sel_eq all_named_vars_more
schirmer@14700
  1825
      in All (map dest_Free [r0,s']) (Logic.list_implies (seleqs,r0 === s')) end;
schirmer@14700
  1826
schirmer@14700
  1827
    (* 3rd stage: thms_thy *)
schirmer@14700
  1828
wenzelm@17510
  1829
    fun prove stndrd = quick_and_dirty_prove stndrd defs_thy;
wenzelm@17510
  1830
    val prove_standard = quick_and_dirty_prove true defs_thy;
wenzelm@17261
  1831
schirmer@15215
  1832
    fun prove_simp stndrd ss simps =
schirmer@14700
  1833
      let val tac = simp_all_tac ss simps
schirmer@15215
  1834
      in fn prop => prove stndrd [] prop (K tac) end;
schirmer@14700
  1835
wenzelm@17510
  1836
    val ss = get_simpset defs_thy;
schirmer@15012
  1837
wenzelm@17261
  1838
    fun sel_convs_prf () = map (prove_simp false ss
schirmer@14700
  1839
                           (sel_defs@ext_dest_convs)) sel_conv_props;
schirmer@15012
  1840
    val sel_convs = timeit_msg "record sel_convs proof:" sel_convs_prf;
schirmer@15215
  1841
    fun sel_convs_standard_prf () = map standard sel_convs
wenzelm@17261
  1842
    val sel_convs_standard =
wenzelm@17261
  1843
          timeit_msg "record sel_convs_standard proof:" sel_convs_standard_prf;
schirmer@14700
  1844
wenzelm@17261
  1845
    fun upd_convs_prf () =
wenzelm@17261
  1846
          map (prove_simp true ss (upd_defs@u_convs)) upd_conv_props;
wenzelm@17261
  1847
schirmer@15012
  1848
    val upd_convs = timeit_msg "record upd_convs proof:" upd_convs_prf;
schirmer@15012
  1849
schirmer@14700
  1850
    val parent_induct = if null parents then [] else [#induct (hd (rev parents))];
schirmer@14700
  1851
schirmer@15015
  1852
    fun induct_scheme_prf () = prove_standard [] induct_scheme_prop (fn prems =>
wenzelm@17261
  1853
          (EVERY [if null parent_induct
schirmer@14700
  1854
                  then all_tac else try_param_tac rN (hd parent_induct) 1,
schirmer@14700
  1855
                  try_param_tac rN ext_induct 1,
schirmer@14700
  1856
                  asm_simp_tac HOL_basic_ss 1]));
schirmer@15012
  1857
    val induct_scheme = timeit_msg "record induct_scheme proof:" induct_scheme_prf;
schirmer@14700
  1858
schirmer@15012
  1859
    fun induct_prf () =
schirmer@14700
  1860
      let val (assm, concl) = induct_prop;
schirmer@14700
  1861
      in
schirmer@15015
  1862
        prove_standard [assm] concl (fn prems =>
schirmer@14700
  1863
          try_param_tac rN induct_scheme 1
schirmer@14700
  1864
          THEN try_param_tac "more" unit_induct 1
schirmer@14700
  1865
          THEN resolve_tac prems 1)
schirmer@14700
  1866
      end;
schirmer@15012
  1867
    val induct = timeit_msg "record induct proof:" induct_prf;
schirmer@14700
  1868
wenzelm@17261
  1869
    fun surjective_prf () =
schirmer@15015
  1870
      prove_standard [] surjective_prop (fn prems =>
schirmer@14700
  1871
          (EVERY [try_param_tac rN induct_scheme 1,
schirmer@15215
  1872
                  simp_tac (ss addsimps sel_convs_standard) 1]))
schirmer@15012
  1873
    val surjective = timeit_msg "record surjective proof:" surjective_prf;
schirmer@15012
  1874
schirmer@15215
  1875
    fun cases_scheme_prf_opt () =
wenzelm@17261
  1876
      let
schirmer@15215
  1877
        val sg = (sign_of defs_thy);
schirmer@15215
  1878
        val (_$(Pvar$_)) = concl_of induct_scheme;
wenzelm@17261
  1879
        val ind = cterm_instantiate
wenzelm@17261
  1880
                    [(cterm_of sg Pvar, cterm_of sg
schirmer@15215
  1881
                            (lambda w (HOLogic.imp$HOLogic.mk_eq(r0,w)$C)))]
schirmer@15215
  1882
                    induct_scheme;
schirmer@15215
  1883
        in standard (ObjectLogic.rulify (mp OF [ind, refl])) end;
schirmer@15215
  1884
schirmer@15215
  1885
    fun cases_scheme_prf_noopt () =
schirmer@15015
  1886
        prove_standard [] cases_scheme_prop (fn prems =>
schirmer@14700
  1887
         EVERY [asm_full_simp_tac (HOL_basic_ss addsimps [atomize_all, atomize_imp]) 1,
schirmer@14700
  1888
               try_param_tac rN induct_scheme 1,
schirmer@14700
  1889
               rtac impI 1,
schirmer@14700
  1890
               REPEAT (etac allE 1),
schirmer@14700
  1891
               etac mp 1,
schirmer@14700
  1892
               rtac refl 1])
schirmer@15215
  1893
    val cases_scheme_prf = quick_and_dirty_prf cases_scheme_prf_noopt cases_scheme_prf_opt;
schirmer@15012
  1894
    val cases_scheme = timeit_msg "record cases_scheme proof:" cases_scheme_prf;
schirmer@14700
  1895
schirmer@15012
  1896
    fun cases_prf () =
schirmer@15015
  1897
      prove_standard [] cases_prop  (fn _ =>
schirmer@14700
  1898
        try_param_tac rN cases_scheme 1
schirmer@14700
  1899
        THEN simp_all_tac HOL_basic_ss [unit_all_eq1]);
schirmer@15012
  1900
    val cases = timeit_msg "record cases proof:" cases_prf;
schirmer@14700
  1901
schirmer@15012
  1902
    fun split_meta_prf () =
schirmer@15215
  1903
        prove false [] split_meta_prop (fn prems =>
wenzelm@17960
  1904
         EVERY [rtac equal_intr_rule 1, norm_hhf_tac 1,
wenzelm@17960
  1905
                etac meta_allE 1, atac 1,
schirmer@14700
  1906
                rtac (prop_subst OF [surjective]) 1,
wenzelm@17960
  1907
                REPEAT (etac meta_allE 1), atac 1]);
schirmer@15012
  1908
    val split_meta = timeit_msg "record split_meta proof:" split_meta_prf;
schirmer@15215
  1909
    val split_meta_standard = standard split_meta;
schirmer@14700
  1910
schirmer@15215
  1911
    fun split_object_prf_opt () =
wenzelm@17261
  1912
      let
schirmer@15215
  1913
        val sg = sign_of defs_thy;
schirmer@15215
  1914
        val cPI= cterm_of sg (lambda r0 (Trueprop (P$r0)));
schirmer@15215
  1915
        val (_$Abs(_,_,P$_)) = fst (Logic.dest_equals (concl_of split_meta_standard));
schirmer@15215
  1916
        val cP = cterm_of sg P;
schirmer@15215
  1917
        val split_meta' = cterm_instantiate [(cP,cPI)] split_meta_standard;
schirmer@15215
  1918
        val (l,r) = HOLogic.dest_eq (HOLogic.dest_Trueprop split_object_prop);
wenzelm@17261
  1919
        val cl = cterm_of sg (HOLogic.mk_Trueprop l);
wenzelm@17261
  1920
        val cr = cterm_of sg (HOLogic.mk_Trueprop r);
schirmer@15215
  1921
        val thl = assume cl                 (*All r. P r*) (* 1 *)
schirmer@15215
  1922
                |> obj_to_meta_all          (*!!r. P r*)
wenzelm@17261
  1923
                |> equal_elim split_meta'   (*!!n m more. P (ext n m more)*)
wenzelm@17261
  1924
                |> meta_to_obj_all          (*All n m more. P (ext n m more)*) (* 2*)
schirmer@15215
  1925
                |> implies_intr cl          (* 1 ==> 2 *)
schirmer@15215
  1926
        val thr = assume cr                           (*All n m more. P (ext n m more)*)
schirmer@15215
  1927
                |> obj_to_meta_all                    (*!!n m more. P (ext n m more)*)
wenzelm@17261
  1928
                |> equal_elim (symmetric split_meta') (*!!r. P r*)
schirmer@15215
  1929
                |> meta_to_obj_all                    (*All r. P r*)
schirmer@15215
  1930
                |> implies_intr cr                    (* 2 ==> 1 *)
wenzelm@17261
  1931
     in standard (thr COMP (thl COMP iffI)) end;
schirmer@15215
  1932
schirmer@15215
  1933
    fun split_object_prf_noopt () =
schirmer@15015
  1934
        prove_standard [] split_object_prop (fn prems =>
wenzelm@17261
  1935
         EVERY [rtac iffI 1,
schirmer@14700
  1936
                REPEAT (rtac allI 1), etac allE 1, atac 1,
schirmer@14700
  1937
                rtac allI 1, rtac induct_scheme 1,REPEAT (etac allE 1),atac 1]);
schirmer@15215
  1938
wenzelm@17261
  1939
    val split_object_prf = quick_and_dirty_prf split_object_prf_noopt split_object_prf_opt;
schirmer@15012
  1940
    val split_object = timeit_msg "record split_object proof:" split_object_prf;
schirmer@14700
  1941
schirmer@15012
  1942
wenzelm@17261
  1943
    fun split_ex_prf () =
schirmer@15015
  1944
        prove_standard [] split_ex_prop (fn prems =>
schirmer@15012
  1945
          EVERY [rtac iffI 1,
schirmer@15012
  1946
                   etac exE 1,
schirmer@15215
  1947
                   simp_tac (HOL_basic_ss addsimps [split_meta_standard]) 1,
schirmer@15215
  1948
                   ex_inst_tac 1,
schirmer@15215
  1949
                   (*REPEAT (rtac exI 1),*)
schirmer@15012
  1950
                   atac 1,
schirmer@15012
  1951
                 REPEAT (etac exE 1),
schirmer@15012
  1952
                 rtac exI 1,
schirmer@15012
  1953
                 atac 1]);
schirmer@15012
  1954
    val split_ex = timeit_msg "record split_ex proof:" split_ex_prf;
schirmer@14700
  1955
wenzelm@17261
  1956
    fun equality_tac thms =
schirmer@15012
  1957
      let val (s'::s::eqs) = rev thms;
schirmer@15215
  1958
          val ss' = ss addsimps (s'::s::sel_convs_standard);
schirmer@15012
  1959
          val eqs' = map (simplify ss') eqs;
schirmer@15012
  1960
      in simp_tac (HOL_basic_ss addsimps (s'::s::eqs')) 1 end;
wenzelm@17261
  1961
schirmer@15015
  1962
   fun equality_prf () = prove_standard [] equality_prop (fn _ =>
schirmer@14700
  1963
      fn st => let val [s, s'] = map #1 (rev (Tactic.innermost_params 1 st)) in
schirmer@14700
  1964
        st |> (res_inst_tac [(rN, s)] cases_scheme 1
schirmer@14700
  1965
        THEN res_inst_tac [(rN, s')] cases_scheme 1
wenzelm@17261
  1966
        THEN (METAHYPS equality_tac 1))
schirmer@15012
  1967
             (* simp_all_tac ss (sel_convs) would also work but is less efficient *)
wenzelm@17261
  1968
      end);
schirmer@15015
  1969
     val equality = timeit_msg "record equality proof:" equality_prf;
schirmer@14700
  1970
haftmann@18377
  1971
    val ((([sel_convs',upd_convs',sel_defs',upd_defs',[split_meta',split_object',split_ex'],derived_defs'],
haftmann@18377
  1972
            [surjective',equality']),[induct_scheme',induct',cases_scheme',cases']), thms_thy) =
schirmer@14700
  1973
      defs_thy
schirmer@14700
  1974
      |> (PureThy.add_thmss o map Thm.no_attributes)
schirmer@15215
  1975
         [("select_convs", sel_convs_standard),
schirmer@14700
  1976
          ("update_convs", upd_convs),
schirmer@14700
  1977
          ("select_defs", sel_defs),
schirmer@14700
  1978
          ("update_defs", upd_defs),
schirmer@15215
  1979
          ("splits", [split_meta_standard,split_object,split_ex]),
schirmer@14700
  1980
          ("defs", derived_defs)]
haftmann@18377
  1981
      ||>> (PureThy.add_thms o map Thm.no_attributes)
schirmer@14700
  1982
          [("surjective", surjective),
schirmer@14700
  1983
           ("equality", equality)]
haftmann@18377
  1984
      ||>> PureThy.add_thms
schirmer@14700
  1985
        [(("induct_scheme", induct_scheme), induct_type_global (suffix schemeN name)),
schirmer@14700
  1986
         (("induct", induct), induct_type_global name),
schirmer@14700
  1987
         (("cases_scheme", cases_scheme), cases_type_global (suffix schemeN name)),
schirmer@14700
  1988
         (("cases", cases), cases_type_global name)];
schirmer@14700
  1989
schirmer@14700
  1990
schirmer@14700
  1991
    val sel_upd_simps = sel_convs' @ upd_convs';
schirmer@14700
  1992
    val iffs = [ext_inject]
schirmer@14700
  1993
    val final_thy =
schirmer@14700
  1994
      thms_thy
haftmann@18377
  1995
      |> (snd oo PureThy.add_thmss)
wenzelm@18688
  1996
          [(("simps", sel_upd_simps), [Attrib.theory Simplifier.simp_add]),
wenzelm@18688
  1997
           (("iffs",iffs), [Attrib.theory iff_add])]
wenzelm@17261
  1998
      |> put_record name (make_record_info args parent fields extension induct_scheme')
schirmer@14700
  1999
      |> put_sel_upd (names @ [full_moreN]) sel_upd_simps
schirmer@14700
  2000
      |> add_record_equalities extension_id equality'
schirmer@15015
  2001
      |> add_extinjects ext_inject
schirmer@15015
  2002
      |> add_extsplit extension_name ext_split
schirmer@14700
  2003
      |> add_record_splits extension_id (split_meta',split_object',split_ex',induct_scheme')
wenzelm@17261
  2004
      |> add_extfields extension_name (fields @ [(full_moreN,moreT)])
wenzelm@17261
  2005
      |> add_fieldext (extension_name,snd extension) (names @ [full_moreN])
schirmer@14700
  2006
      |> Theory.parent_path;
schirmer@14700
  2007
schirmer@14700
  2008
  in final_thy
schirmer@14700
  2009
  end;
wenzelm@4867
  2010
wenzelm@4867
  2011
(* add_record *)
wenzelm@4867
  2012
wenzelm@4895
  2013
(*we do all preparations and error checks here, deferring the real
wenzelm@4895
  2014
  work to record_definition*)
wenzelm@4867
  2015
fun gen_add_record prep_typ prep_raw_parent (params, bname) raw_parent raw_fields thy =
wenzelm@4867
  2016
  let
wenzelm@17261
  2017
    val _ = Theory.requires thy "Record" "record definitions";
wenzelm@4867
  2018
    val sign = Theory.sign_of thy;
wenzelm@5698
  2019
    val _ = message ("Defining record " ^ quote bname ^ " ...");
wenzelm@4867
  2020
wenzelm@4867
  2021
wenzelm@4867
  2022
    (* parents *)
wenzelm@4867
  2023
wenzelm@4867
  2024
    fun prep_inst T = snd (cert_typ sign ([], T));
wenzelm@4867
  2025
skalberg@15570
  2026
    val parent = Option.map (apfst (map prep_inst) o prep_raw_parent sign) raw_parent
wenzelm@18678
  2027
      handle ERROR msg => cat_error msg ("The error(s) above in parent record specification");
wenzelm@12247
  2028
    val parents = add_parents thy parent [];
wenzelm@4867
  2029
wenzelm@4867
  2030
    val init_env =
wenzelm@4867
  2031
      (case parent of
skalberg@15531
  2032
        NONE => []
skalberg@15574
  2033
      | SOME (types, _) => foldr Term.add_typ_tfrees [] types);
wenzelm@4867
  2034
wenzelm@4867
  2035
wenzelm@4867
  2036
    (* fields *)
wenzelm@4867
  2037
wenzelm@12506
  2038
    fun prep_field (env, (c, raw_T, mx)) =
wenzelm@18678
  2039
      let val (env', T) = prep_typ sign (env, raw_T) handle ERROR msg =>
wenzelm@18678
  2040
        cat_error msg ("The error(s) above occured in field " ^ quote c)
wenzelm@12506
  2041
      in (env', (c, T, mx)) end;
wenzelm@4867
  2042
wenzelm@4967
  2043
    val (envir, bfields) = foldl_map prep_field (init_env, raw_fields);
wenzelm@4867
  2044
    val envir_names = map fst envir;
wenzelm@4867
  2045
wenzelm@4867
  2046
wenzelm@4867
  2047
    (* args *)
wenzelm@4867
  2048
wenzelm@4867
  2049
    val defaultS = Sign.defaultS sign;
haftmann@17485
  2050
    val args = map (fn x => (x, AList.lookup (op =) envir x |> the_default defaultS)) params;
wenzelm@4867
  2051
wenzelm@4867
  2052
wenzelm@4867
  2053
    (* errors *)
wenzelm@4867
  2054
wenzelm@4890
  2055
    val name = Sign.full_name sign bname;
wenzelm@17261
  2056
    val err_dup_record =
wenzelm@4890
  2057
      if is_none (get_record thy name) then []
wenzelm@4890
  2058
      else ["Duplicate definition of record " ^ quote name];
wenzelm@4890
  2059
wenzelm@4867
  2060
    val err_dup_parms =
wenzelm@4867
  2061
      (case duplicates params of
wenzelm@4867
  2062
        [] => []
wenzelm@4890
  2063
      | dups => ["Duplicate parameter(s) " ^ commas dups]);
wenzelm@4867
  2064
wenzelm@4867
  2065
    val err_extra_frees =
wenzelm@4867
  2066
      (case gen_rems (op =) (envir_names, params) of
wenzelm@4867
  2067
        [] => []
wenzelm@4890
  2068
      | extras => ["Extra free type variable(s) " ^ commas extras]);
wenzelm@4867
  2069
wenzelm@4890
  2070
    val err_no_fields = if null bfields then ["No fields present"] else [];
wenzelm@4867
  2071
wenzelm@4867
  2072
    val err_dup_fields =
wenzelm@12506
  2073
      (case duplicates (map #1 bfields) of
wenzelm@4867
  2074
        [] => []
wenzelm@4890
  2075
      | dups => ["Duplicate field(s) " ^ commas_quote dups]);
wenzelm@4890
  2076
wenzelm@4890
  2077
    val err_bad_fields =
wenzelm@12506
  2078
      if forall (not_equal moreN o #1) bfields then []
wenzelm@4890
  2079
      else ["Illegal field name " ^ quote moreN];
wenzelm@4867
  2080
wenzelm@4867
  2081
    val err_dup_sorts =
wenzelm@4867
  2082
      (case duplicates envir_names of
wenzelm@4867
  2083
        [] => []
wenzelm@4867
  2084
      | dups => ["Inconsistent sort constraints for " ^ commas dups]);
wenzelm@4867
  2085
wenzelm@4867
  2086
    val errs =
wenzelm@4890
  2087
      err_dup_record @ err_dup_parms @ err_extra_frees @ err_no_fields @
wenzelm@4890
  2088
      err_dup_fields @ err_bad_fields @ err_dup_sorts;
wenzelm@4867
  2089
  in
schirmer@14700
  2090
    if null errs then () else error (cat_lines errs)  ;
wenzelm@4867
  2091
    thy |> record_definition (args, bname) parent parents bfields
wenzelm@4867
  2092
  end
wenzelm@18678
  2093
  handle ERROR msg => cat_error msg ("Failed to define record " ^ quote bname);
wenzelm@4867
  2094
wenzelm@4867
  2095
val add_record = gen_add_record read_typ read_raw_parent;
wenzelm@4867
  2096
val add_record_i = gen_add_record cert_typ (K I);
wenzelm@4867
  2097
wenzelm@6358
  2098
(* setup theory *)
wenzelm@4867
  2099
wenzelm@4867
  2100
val setup =
wenzelm@5006
  2101
 [RecordsData.init,
wenzelm@11490
  2102
  Theory.add_trfuns ([], parse_translation, [], []),
wenzelm@17261
  2103
  Theory.add_advanced_trfuns ([], adv_parse_translation, [], []),
wenzelm@17875
  2104
  (fn thy => (Simplifier.change_simpset_of thy
wenzelm@17875
  2105
    (fn ss => ss addsimprocs [record_simproc, record_upd_simproc, record_eq_simproc]); thy))];
wenzelm@4867
  2106
wenzelm@6358
  2107
(* outer syntax *)
wenzelm@6358
  2108
wenzelm@17057
  2109
local structure P = OuterParse and K = OuterKeyword in
wenzelm@6358
  2110
wenzelm@6358
  2111
val record_decl =
wenzelm@12876
  2112
  P.type_args -- P.name --
wenzelm@12876
  2113
    (P.$$$ "=" |-- Scan.option (P.typ --| P.$$$ "+") -- Scan.repeat1 P.const);
wenzelm@6358
  2114
wenzelm@6358
  2115
val recordP =
wenzelm@17261
  2116
  OuterSyntax.command "record" "define extensible record" K.thy_decl
wenzelm@17261
  2117
    (record_decl >> (fn (x, (y, z)) => Toplevel.theory (add_record x y z)));
wenzelm@6358
  2118
wenzelm@6358
  2119
val _ = OuterSyntax.add_parsers [recordP];
wenzelm@6358
  2120
wenzelm@4867
  2121
end;
wenzelm@5698
  2122
wenzelm@6384
  2123
end;
wenzelm@6384
  2124
schirmer@15215
  2125
wenzelm@5698
  2126
structure BasicRecordPackage: BASIC_RECORD_PACKAGE = RecordPackage;
wenzelm@17261
  2127
open BasicRecordPackage;