src/Pure/Isar/code.ML
author haftmann
Wed Aug 15 08:57:42 2007 +0200 (2007-08-15)
changeset 24283 8ca96f4e49cd
parent 24219 e558fe311376
child 24423 ae9cd0e92423
permissions -rw-r--r--
tuned
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(*  Title:      Pure/Isar/code.ML
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    ID:         $Id$
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    Author:     Florian Haftmann, TU Muenchen
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Abstract executable content of theory.  Management of data dependent on
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executable content.
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*)
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signature CODE =
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sig
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  val add_func: bool -> thm -> theory -> theory
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  val del_func: thm -> theory -> theory
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  val add_funcl: CodeUnit.const * thm list Susp.T -> theory -> theory
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  val add_func_attr: bool -> Attrib.src
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  val add_inline: thm -> theory -> theory
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  val del_inline: thm -> theory -> theory
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  val add_inline_proc: string * (theory -> cterm list -> thm list) -> theory -> theory
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  val del_inline_proc: string -> theory -> theory
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  val add_preproc: string * (theory -> thm list -> thm list) -> theory -> theory
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  val del_preproc: string -> theory -> theory
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  val add_post: thm -> theory -> theory
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  val del_post: thm -> theory -> theory
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  val add_datatype: string * ((string * sort) list * (string * typ list) list)
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    -> theory -> theory
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  val add_datatype_consts: CodeUnit.const list -> theory -> theory
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  val add_datatype_consts_cmd: string list -> theory -> theory
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  val coregular_algebra: theory -> Sorts.algebra
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  val operational_algebra: theory -> (sort -> sort) * Sorts.algebra
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  val these_funcs: theory -> CodeUnit.const -> thm list
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  val get_datatype: theory -> string -> ((string * sort) list * (string * typ list) list)
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  val get_datatype_of_constr: theory -> CodeUnit.const -> string option
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  val default_typ: theory -> CodeUnit.const -> typ
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  val preprocess_conv: cterm -> thm
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  val postprocess_conv: cterm -> thm
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  val add_attribute: string * (Args.T list -> attribute * Args.T list) -> theory -> theory
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  val print_codesetup: theory -> unit
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end;
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signature CODE_DATA_ARGS =
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sig
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  type T
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  val empty: T
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  val merge: Pretty.pp -> T * T -> T
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  val purge: theory option -> CodeUnit.const list option -> T -> T
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end;
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signature CODE_DATA =
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sig
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  type T
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  val get: theory -> T
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  val change: theory -> (T -> T) -> T
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  val change_yield: theory -> (T -> 'a * T) -> 'a * T
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end;
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signature PRIVATE_CODE =
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sig
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  include CODE
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  val declare_data: Object.T -> (Pretty.pp -> Object.T * Object.T -> Object.T)
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    -> (theory option -> CodeUnit.const list option -> Object.T -> Object.T) -> serial
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  val get_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> 'a
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  val change_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> ('a -> 'a) -> 'a
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  val change_yield_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> ('a -> 'b * 'a) -> 'b * 'a
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end;
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structure Code : PRIVATE_CODE =
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struct
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(** preliminaries **)
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structure Consttab = CodeUnit.Consttab;
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(* certificate theorems *)
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fun string_of_lthms r = case Susp.peek r
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 of SOME thms => (map string_of_thm o rev) thms
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  | NONE => ["[...]"];
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fun pretty_lthms ctxt r = case Susp.peek r
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 of SOME thms => map (ProofContext.pretty_thm ctxt) thms
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  | NONE => [Pretty.str "[...]"];
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fun certificate thy f r =
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  case Susp.peek r
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   of SOME thms => (Susp.value o f thy) thms
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     | NONE => let
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          val thy_ref = Theory.check_thy thy;
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        in Susp.delay (fn () => (f (Theory.deref thy_ref) o Susp.force) r) end;
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fun merge' _ ([], []) = (false, [])
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  | merge' _ ([], ys) = (true, ys)
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  | merge' eq (xs, ys) = fold_rev
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      (fn y => fn (t, xs) => (t orelse not (member eq xs y), insert eq y xs)) ys (false, xs);
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fun merge_alist eq_key eq (xys as (xs, ys)) =
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  if eq_list (eq_pair eq_key eq) (xs, ys)
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  then (false, xs)
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  else (true, AList.merge eq_key eq xys);
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val merge_thms = merge' Thm.eq_thm_prop;
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fun merge_lthms (r1, r2) =
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  if Susp.same (r1, r2)
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    then (false, r1)
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  else case Susp.peek r1
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   of SOME [] => (true, r2)
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    | _ => case Susp.peek r2
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       of SOME [] => (true, r1)
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        | _ => (apsnd (Susp.delay o K)) (merge_thms (Susp.force r1, Susp.force r2));
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(* pairs of (selected, deleted) defining equations *)
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type sdthms = thm list Susp.T * thm list;
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fun add_drop_redundant thm (sels, dels) =
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  let
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    val thy = Thm.theory_of_thm thm;
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    val args_of = snd o strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of;
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    val args = args_of thm;
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    fun matches [] _ = true
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      | matches (Var _ :: xs) [] = matches xs []
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      | matches (_ :: _) [] = false
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      | matches (x :: xs) (y :: ys) = Pattern.matches thy (x, y) andalso matches xs ys;
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    fun drop thm' = not (matches args (args_of thm'))
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      orelse (warning ("code generator: dropping redundant defining equation\n" ^ string_of_thm thm'); false);
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    val (keeps, drops) = List.partition drop sels;
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  in (thm :: keeps, dels |> remove Thm.eq_thm_prop thm |> fold (insert Thm.eq_thm_prop) drops) end;
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fun add_thm thm (sels, dels) =
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  apfst Susp.value (add_drop_redundant thm (Susp.force sels, dels));
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fun add_lthms lthms (sels, []) =
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      (Susp.delay (fn () => fold add_drop_redundant
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        (Susp.force lthms) (Susp.force sels, []) |> fst), [])
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        (*FIXME*)
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  | add_lthms lthms (sels, dels) =
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      fold add_thm (Susp.force lthms) (sels, dels);
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fun del_thm thm (sels, dels) =
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  (Susp.value (remove Thm.eq_thm_prop thm (Susp.force sels)), thm :: dels);
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fun pretty_sdthms ctxt (sels, _) = pretty_lthms ctxt sels;
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fun merge_sdthms ((sels1, dels1), (sels2, dels2)) =
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  let
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    val (dels_t, dels) = merge_thms (dels1, dels2);
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  in if dels_t
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    then let
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      val (_, sels) = merge_thms
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        (subtract Thm.eq_thm_prop dels2 (Susp.force sels1), Susp.force sels2);
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      val (_, dels) = merge_thms
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        (subtract Thm.eq_thm_prop (Susp.force sels2) dels1, dels2);
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    in (true, ((Susp.delay o K) sels, dels)) end
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    else let
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      val (sels_t, sels) = merge_lthms (sels1, sels2);
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    in (sels_t, (sels, dels)) end
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  end;
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(* code attributes *)
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structure CodeAttr = TheoryDataFun (
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  type T = (string * (Args.T list -> attribute * Args.T list)) list;
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  val empty = [];
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  val copy = I;
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  val extend = I;
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  fun merge _ = AList.merge (op =) (K true);
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);
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fun add_attribute (attr as (name, _)) =
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  let
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    fun add_parser ("", parser) attrs = attrs @ [("", parser)]
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      | add_parser (name, parser) attrs = (name, Args.$$$ name |-- parser) :: attrs;
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    fun error "" = error ("Code attribute already declared")
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      | error name = error ("Code attribute " ^ name ^ " already declared")
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  in CodeAttr.map (fn attrs => if AList.defined (op =) attrs name
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    then error name else add_parser attr attrs)
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  end;
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val _ =
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  let
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    val code_attr = Attrib.syntax (Scan.peek (fn context =>
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      List.foldr op || Scan.fail (map snd (CodeAttr.get (Context.theory_of context)))));
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  in
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    Context.add_setup (Attrib.add_attributes
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      [("code", code_attr, "declare theorems for code generation")])
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  end;
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(** exeuctable content **)
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datatype thmproc = Preproc of {
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  inlines: thm list,
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  inline_procs: (string * (serial * (theory -> cterm list -> thm list))) list,
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  preprocs: (string * (serial * (theory -> thm list -> thm list))) list,
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  posts: thm list
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};
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fun mk_thmproc (((inlines, inline_procs), preprocs), posts) =
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  Preproc { inlines = inlines, inline_procs = inline_procs, preprocs = preprocs,
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    posts = posts };
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fun map_thmproc f (Preproc { inlines, inline_procs, preprocs, posts }) =
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  mk_thmproc (f (((inlines, inline_procs), preprocs), posts));
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fun merge_thmproc (Preproc { inlines = inlines1, inline_procs = inline_procs1,
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    preprocs = preprocs1, posts = posts1 },
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  Preproc { inlines = inlines2, inline_procs = inline_procs2,
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      preprocs = preprocs2, posts= posts2 }) =
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    let
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      val (touched1, inlines) = merge_thms (inlines1, inlines2);
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      val (touched2, inline_procs) = merge_alist (op =) (eq_fst (op =)) (inline_procs1, inline_procs2);
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      val (touched3, preprocs) = merge_alist (op =) (eq_fst (op =)) (preprocs1, preprocs2);
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      val (_, posts) = merge_thms (posts1, posts2);
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    in (touched1 orelse touched2 orelse touched3,
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      mk_thmproc (((inlines, inline_procs), preprocs), posts)) end;
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fun join_func_thms (tabs as (tab1, tab2)) =
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  let
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    val cs1 = Consttab.keys tab1;
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    val cs2 = Consttab.keys tab2;
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    val cs' = filter (member CodeUnit.eq_const cs2) cs1;
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    val cs'' = subtract (op =) cs' cs1 @ subtract (op =) cs' cs2;
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    val cs''' = ref [] : CodeUnit.const list ref;
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    fun merge c x = let val (touched, thms') = merge_sdthms x in
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      (if touched then cs''' := cons c (!cs''') else (); thms') end;
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  in (cs'' @ !cs''', Consttab.join merge tabs) end;
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fun merge_funcs (thms1, thms2) =
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  let
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    val (consts, thms) = join_func_thms (thms1, thms2);
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  in (SOME consts, thms) end;
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val eq_string = op = : string * string -> bool;
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val eq_co = op = : (string * typ list) * (string * typ list) -> bool;
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fun eq_dtyp ((vs1, cs1), (vs2, cs2)) = 
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  gen_eq_set (eq_pair eq_string (gen_eq_set eq_string)) (vs1, vs2)
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    andalso gen_eq_set eq_co (cs1, cs2);
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fun merge_dtyps (tabs as (tab1, tab2)) =
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  let
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    val tycos1 = Symtab.keys tab1;
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    val tycos2 = Symtab.keys tab2;
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    val tycos' = filter (member eq_string tycos2) tycos1;
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    val new_types = not (gen_eq_set (op =) (tycos1, tycos2));
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    val diff_types = not (gen_eq_set (eq_pair (op =) eq_dtyp)
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      (AList.make (the o Symtab.lookup tab1) tycos',
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       AList.make (the o Symtab.lookup tab2) tycos'));
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    fun join _ (cos as (_, cos2)) = if eq_dtyp cos
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      then raise Symtab.SAME else cos2;
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  in ((new_types, diff_types), Symtab.join join tabs) end;
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datatype spec = Spec of {
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  funcs: sdthms Consttab.table,
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  dtyps: ((string * sort) list * (string * typ list) list) Symtab.table
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};
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fun mk_spec (funcs, dtyps) =
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  Spec { funcs = funcs, dtyps = dtyps };
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fun map_spec f (Spec { funcs = funcs, dtyps = dtyps }) =
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  mk_spec (f (funcs, dtyps));
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fun merge_spec (Spec { funcs = funcs1, dtyps = dtyps1 },
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  Spec { funcs = funcs2, dtyps = dtyps2 }) =
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  let
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    val (touched_cs, funcs) = merge_funcs (funcs1, funcs2);
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    val ((new_types, diff_types), dtyps) = merge_dtyps (dtyps1, dtyps2);
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    val touched = if new_types orelse diff_types then NONE else touched_cs;
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  in (touched, mk_spec (funcs, dtyps)) end;
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datatype exec = Exec of {
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  thmproc: thmproc,
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  spec: spec
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};
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fun mk_exec (thmproc, spec) =
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  Exec { thmproc = thmproc, spec = spec };
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fun map_exec f (Exec { thmproc = thmproc, spec = spec }) =
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  mk_exec (f (thmproc, spec));
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fun merge_exec (Exec { thmproc = thmproc1, spec = spec1 },
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  Exec { thmproc = thmproc2, spec = spec2 }) =
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  let
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    val (touched', thmproc) = merge_thmproc (thmproc1, thmproc2);
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    val (touched_cs, spec) = merge_spec (spec1, spec2);
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    val touched = if touched' then NONE else touched_cs;
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  in (touched, mk_exec (thmproc, spec)) end;
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val empty_exec = mk_exec (mk_thmproc ((([], []), []), []),
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  mk_spec (Consttab.empty, Symtab.empty));
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fun the_thmproc (Exec { thmproc = Preproc x, ...}) = x;
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fun the_spec (Exec { spec = Spec x, ...}) = x;
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val the_funcs = #funcs o the_spec;
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val the_dtyps = #dtyps o the_spec;
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val map_thmproc = map_exec o apfst o map_thmproc;
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val map_funcs = map_exec o apsnd o map_spec o apfst;
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val map_dtyps = map_exec o apsnd o map_spec o apsnd;
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(* data slots dependent on executable content *)
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(*private copy avoids potential conflict of table exceptions*)
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structure Datatab = TableFun(type key = int val ord = int_ord);
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local
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type kind = {
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  empty: Object.T,
haftmann@24219
   312
  merge: Pretty.pp -> Object.T * Object.T -> Object.T,
haftmann@24219
   313
  purge: theory option -> CodeUnit.const list option -> Object.T -> Object.T
haftmann@24219
   314
};
haftmann@24219
   315
haftmann@24219
   316
val kinds = ref (Datatab.empty: kind Datatab.table);
haftmann@24219
   317
val kind_keys = ref ([]: serial list);
haftmann@24219
   318
haftmann@24219
   319
fun invoke f k = case Datatab.lookup (! kinds) k
haftmann@24219
   320
 of SOME kind => f kind
haftmann@24219
   321
  | NONE => sys_error "Invalid code data identifier";
haftmann@24219
   322
haftmann@24219
   323
in
haftmann@24219
   324
haftmann@24219
   325
fun declare_data empty merge purge =
haftmann@24219
   326
  let
haftmann@24219
   327
    val k = serial ();
haftmann@24219
   328
    val kind = {empty = empty, merge = merge, purge = purge};
haftmann@24219
   329
    val _ = change kinds (Datatab.update (k, kind));
haftmann@24219
   330
    val _ = change kind_keys (cons k);
haftmann@24219
   331
  in k end;
haftmann@24219
   332
haftmann@24219
   333
fun invoke_empty k = invoke (fn kind => #empty kind) k;
haftmann@24219
   334
haftmann@24219
   335
fun invoke_merge_all pp = Datatab.join
haftmann@24219
   336
  (invoke (fn kind => #merge kind pp));
haftmann@24219
   337
haftmann@24219
   338
fun invoke_purge_all thy_opt cs =
haftmann@24219
   339
  fold (fn k => Datatab.map_entry k
haftmann@24219
   340
    (invoke (fn kind => #purge kind thy_opt cs) k)) (! kind_keys);
haftmann@24219
   341
haftmann@24219
   342
end; (*local*)
haftmann@24219
   343
haftmann@24219
   344
haftmann@24219
   345
(* theory store *)
haftmann@24219
   346
haftmann@24219
   347
local
haftmann@24219
   348
haftmann@24219
   349
type data = Object.T Datatab.table;
haftmann@24219
   350
haftmann@24219
   351
structure CodeData = TheoryDataFun
haftmann@24219
   352
(
haftmann@24219
   353
  type T = exec * data ref;
haftmann@24219
   354
  val empty = (empty_exec, ref Datatab.empty : data ref);
haftmann@24219
   355
  fun copy (exec, data) = (exec, ref (! data));
haftmann@24219
   356
  val extend = copy;
haftmann@24219
   357
  fun merge pp ((exec1, data1), (exec2, data2)) =
haftmann@24219
   358
    let
haftmann@24219
   359
      val (touched, exec) = merge_exec (exec1, exec2);
haftmann@24219
   360
      val data1' = invoke_purge_all NONE touched (! data1);
haftmann@24219
   361
      val data2' = invoke_purge_all NONE touched (! data2);
haftmann@24219
   362
      val data = invoke_merge_all pp (data1', data2');
haftmann@24219
   363
    in (exec, ref data) end;
haftmann@24219
   364
);
haftmann@24219
   365
haftmann@24219
   366
val _ = Context.add_setup CodeData.init;
haftmann@24219
   367
haftmann@24219
   368
fun ch r f = let val x = f (! r) in (r := x; x) end;
haftmann@24219
   369
fun thy_data f thy = f ((snd o CodeData.get) thy);
haftmann@24219
   370
haftmann@24219
   371
fun get_ensure_init kind data_ref =
haftmann@24219
   372
  case Datatab.lookup (! data_ref) kind
haftmann@24219
   373
   of SOME x => x
haftmann@24219
   374
    | NONE => let val y = invoke_empty kind
haftmann@24219
   375
        in (change data_ref (Datatab.update (kind, y)); y) end;
haftmann@24219
   376
haftmann@24219
   377
in
haftmann@24219
   378
haftmann@24219
   379
(* access to executable content *)
haftmann@24219
   380
haftmann@24219
   381
val get_exec = fst o CodeData.get;
haftmann@24219
   382
haftmann@24219
   383
fun map_exec_purge touched f thy =
haftmann@24219
   384
  CodeData.map (fn (exec, data) => 
haftmann@24219
   385
    (f exec, ref (invoke_purge_all (SOME thy) touched (! data)))) thy;
haftmann@24219
   386
haftmann@24219
   387
haftmann@24219
   388
(* access to data dependent on abstract executable content *)
haftmann@24219
   389
haftmann@24219
   390
fun get_data (kind, _, dest) = thy_data (get_ensure_init kind #> dest);
haftmann@24219
   391
haftmann@24219
   392
fun change_data (kind, mk, dest) =
haftmann@24219
   393
  let
haftmann@24219
   394
    fun chnge data_ref f =
haftmann@24219
   395
      let
haftmann@24219
   396
        val data = get_ensure_init kind data_ref;
haftmann@24219
   397
        val data' = f (dest data);
haftmann@24219
   398
      in (change data_ref (Datatab.update (kind, mk data')); data') end;
haftmann@24219
   399
  in thy_data chnge end;
haftmann@24219
   400
haftmann@24219
   401
fun change_yield_data (kind, mk, dest) =
haftmann@24219
   402
  let
haftmann@24219
   403
    fun chnge data_ref f =
haftmann@24219
   404
      let
haftmann@24219
   405
        val data = get_ensure_init kind data_ref;
haftmann@24219
   406
        val (x, data') = f (dest data);
haftmann@24219
   407
      in (x, (change data_ref (Datatab.update (kind, mk data')); data')) end;
haftmann@24219
   408
  in thy_data chnge end;
haftmann@24219
   409
haftmann@24219
   410
end; (*local*)
haftmann@24219
   411
haftmann@24219
   412
haftmann@24219
   413
(* print executable content *)
haftmann@24219
   414
haftmann@24219
   415
fun print_codesetup thy =
haftmann@24219
   416
  let
haftmann@24219
   417
    val ctxt = ProofContext.init thy;
haftmann@24219
   418
    val exec = get_exec thy;
haftmann@24219
   419
    fun pretty_func (s, lthms) =
haftmann@24219
   420
      (Pretty.block o Pretty.fbreaks) (
haftmann@24219
   421
        Pretty.str s :: pretty_sdthms ctxt lthms
haftmann@24219
   422
      );
haftmann@24219
   423
    fun pretty_dtyp (s, []) =
haftmann@24219
   424
          Pretty.str s
haftmann@24219
   425
      | pretty_dtyp (s, cos) =
haftmann@24219
   426
          (Pretty.block o Pretty.breaks) (
haftmann@24219
   427
            Pretty.str s
haftmann@24219
   428
            :: Pretty.str "="
haftmann@24219
   429
            :: separate (Pretty.str "|") (map (fn (c, []) => Pretty.str c
haftmann@24219
   430
                 | (c, tys) =>
haftmann@24219
   431
                     (Pretty.block o Pretty.breaks)
haftmann@24219
   432
                        (Pretty.str c :: Pretty.str "of" :: map (Pretty.quote o Sign.pretty_typ thy) tys)) cos)
haftmann@24219
   433
          );
haftmann@24219
   434
    val inlines = (#inlines o the_thmproc) exec;
haftmann@24219
   435
    val inline_procs = (map fst o #inline_procs o the_thmproc) exec;
haftmann@24219
   436
    val preprocs = (map fst o #preprocs o the_thmproc) exec;
haftmann@24219
   437
    val funs = the_funcs exec
haftmann@24219
   438
      |> Consttab.dest
haftmann@24219
   439
      |> (map o apfst) (CodeUnit.string_of_const thy)
haftmann@24219
   440
      |> sort (string_ord o pairself fst);
haftmann@24219
   441
    val dtyps = the_dtyps exec
haftmann@24219
   442
      |> Symtab.dest
haftmann@24219
   443
      |> map (fn (dtco, (vs, cos)) => (Sign.string_of_typ thy (Type (dtco, map TFree vs)), cos))
haftmann@24219
   444
      |> sort (string_ord o pairself fst)
haftmann@24219
   445
  in
haftmann@24219
   446
    (Pretty.writeln o Pretty.chunks) [
haftmann@24219
   447
      Pretty.block (
haftmann@24219
   448
        Pretty.str "defining equations:"
haftmann@24219
   449
        :: Pretty.fbrk
haftmann@24219
   450
        :: (Pretty.fbreaks o map pretty_func) funs
haftmann@24219
   451
      ),
haftmann@24219
   452
      Pretty.block (
haftmann@24219
   453
        Pretty.str "inlining theorems:"
haftmann@24219
   454
        :: Pretty.fbrk
haftmann@24219
   455
        :: (Pretty.fbreaks o map (ProofContext.pretty_thm ctxt)) inlines
haftmann@24219
   456
      ),
haftmann@24219
   457
      Pretty.block (
haftmann@24219
   458
        Pretty.str "inlining procedures:"
haftmann@24219
   459
        :: Pretty.fbrk
haftmann@24219
   460
        :: (Pretty.fbreaks o map Pretty.str) inline_procs
haftmann@24219
   461
      ),
haftmann@24219
   462
      Pretty.block (
haftmann@24219
   463
        Pretty.str "preprocessors:"
haftmann@24219
   464
        :: Pretty.fbrk
haftmann@24219
   465
        :: (Pretty.fbreaks o map Pretty.str) preprocs
haftmann@24219
   466
      ),
haftmann@24219
   467
      Pretty.block (
haftmann@24219
   468
        Pretty.str "datatypes:"
haftmann@24219
   469
        :: Pretty.fbrk
haftmann@24219
   470
        :: (Pretty.fbreaks o map pretty_dtyp) dtyps
haftmann@24219
   471
      )
haftmann@24219
   472
    ]
haftmann@24219
   473
  end;
haftmann@24219
   474
haftmann@24219
   475
haftmann@24219
   476
haftmann@24219
   477
(** theorem transformation and certification **)
haftmann@24219
   478
haftmann@24219
   479
fun common_typ_funcs [] = []
haftmann@24219
   480
  | common_typ_funcs [thm] = [thm]
haftmann@24219
   481
  | common_typ_funcs (thms as thm :: _) =
haftmann@24219
   482
      let
haftmann@24219
   483
        val thy = Thm.theory_of_thm thm;
haftmann@24219
   484
        fun incr_thm thm max =
haftmann@24219
   485
          let
haftmann@24219
   486
            val thm' = incr_indexes max thm;
haftmann@24219
   487
            val max' = Thm.maxidx_of thm' + 1;
haftmann@24219
   488
          in (thm', max') end;
haftmann@24219
   489
        val (thms', maxidx) = fold_map incr_thm thms 0;
haftmann@24219
   490
        val ty1 :: tys = map (snd o CodeUnit.head_func) thms';
haftmann@24219
   491
        fun unify ty env = Sign.typ_unify thy (ty1, ty) env
haftmann@24219
   492
          handle Type.TUNIFY =>
haftmann@24219
   493
            error ("Type unificaton failed, while unifying defining equations\n"
haftmann@24219
   494
            ^ (cat_lines o map Display.string_of_thm) thms
haftmann@24219
   495
            ^ "\nwith types\n"
haftmann@24219
   496
            ^ (cat_lines o map (CodeUnit.string_of_typ thy)) (ty1 :: tys));
haftmann@24219
   497
        val (env, _) = fold unify tys (Vartab.empty, maxidx)
haftmann@24219
   498
        val instT = Vartab.fold (fn (x_i, (sort, ty)) =>
haftmann@24219
   499
          cons (Thm.ctyp_of thy (TVar (x_i, sort)), Thm.ctyp_of thy ty)) env [];
haftmann@24219
   500
      in map (Thm.instantiate (instT, [])) thms' end;
haftmann@24219
   501
haftmann@24219
   502
fun certify_const thy const thms =
haftmann@24219
   503
  let
haftmann@24219
   504
    fun cert thm = if CodeUnit.eq_const (const, fst (CodeUnit.head_func thm))
haftmann@24219
   505
      then thm else error ("Wrong head of defining equation,\nexpected constant "
haftmann@24219
   506
        ^ CodeUnit.string_of_const thy const ^ "\n" ^ string_of_thm thm)
haftmann@24219
   507
  in map cert thms end;
haftmann@24219
   508
haftmann@24219
   509
haftmann@24219
   510
haftmann@24219
   511
(** operational sort algebra and class discipline **)
haftmann@24219
   512
haftmann@24219
   513
local
haftmann@24219
   514
haftmann@24219
   515
fun aggr_neutr f y [] = y
haftmann@24219
   516
  | aggr_neutr f y (x::xs) = aggr_neutr f (f y x) xs;
haftmann@24219
   517
haftmann@24219
   518
fun aggregate f [] = NONE
haftmann@24219
   519
  | aggregate f (x::xs) = SOME (aggr_neutr f x xs);
haftmann@24219
   520
haftmann@24219
   521
fun inter_sorts thy =
haftmann@24219
   522
  let
haftmann@24219
   523
    val algebra = Sign.classes_of thy;
haftmann@24219
   524
    val inters = curry (Sorts.inter_sort algebra);
haftmann@24219
   525
  in aggregate (map2 inters) end;
haftmann@24219
   526
haftmann@24219
   527
fun specific_constraints thy (class, tyco) =
haftmann@24219
   528
  let
haftmann@24219
   529
    val vs = Name.invents Name.context "" (Sign.arity_number thy tyco);
haftmann@24219
   530
    val clsops = (these o Option.map snd o try (AxClass.params_of_class thy)) class;
haftmann@24219
   531
    val funcs = clsops
haftmann@24219
   532
      |> map (fn (clsop, _) => (clsop, SOME tyco))
haftmann@24219
   533
      |> map (Consttab.lookup ((the_funcs o get_exec) thy))
haftmann@24219
   534
      |> (map o Option.map) (Susp.force o fst)
haftmann@24219
   535
      |> maps these
haftmann@24219
   536
      |> map (Thm.transfer thy);
haftmann@24219
   537
    val sorts = map (map (snd o dest_TVar) o snd o dest_Type o the_single
haftmann@24219
   538
      o Sign.const_typargs thy o (fn ((c, _), ty) => (c, ty)) o CodeUnit.head_func) funcs;
haftmann@24219
   539
  in sorts end;
haftmann@24219
   540
haftmann@24219
   541
fun weakest_constraints thy (class, tyco) =
haftmann@24219
   542
  let
haftmann@24219
   543
    val all_superclasses = class :: Graph.all_succs ((#classes o Sorts.rep_algebra o Sign.classes_of) thy) [class];
haftmann@24219
   544
  in case inter_sorts thy (maps (fn class => specific_constraints thy (class, tyco)) all_superclasses)
haftmann@24219
   545
   of SOME sorts => sorts
haftmann@24219
   546
    | NONE => Sign.arity_sorts thy tyco [class]
haftmann@24219
   547
  end;
haftmann@24219
   548
haftmann@24219
   549
fun strongest_constraints thy (class, tyco) =
haftmann@24219
   550
  let
haftmann@24219
   551
    val algebra = Sign.classes_of thy;
haftmann@24219
   552
    val all_subclasses = class :: Graph.all_preds ((#classes o Sorts.rep_algebra) algebra) [class];
haftmann@24219
   553
    val inst_subclasses = filter (can (Sorts.mg_domain algebra tyco) o single) all_subclasses;
haftmann@24219
   554
  in case inter_sorts thy (maps (fn class => specific_constraints thy (class, tyco)) inst_subclasses)
haftmann@24219
   555
   of SOME sorts => sorts
haftmann@24219
   556
    | NONE => replicate
haftmann@24219
   557
        (Sign.arity_number thy tyco) (Sign.certify_sort thy (Sign.all_classes thy))
haftmann@24219
   558
  end;
haftmann@24219
   559
haftmann@24219
   560
fun gen_classop_typ constr thy class (c, tyco) = 
haftmann@24219
   561
  let
haftmann@24219
   562
    val (var, cs) = try (AxClass.params_of_class thy) class |> the_default ("'a", [])
haftmann@24219
   563
    val ty = (the o AList.lookup (op =) cs) c;
haftmann@24219
   564
    val sort_args = Name.names (Name.declare var Name.context) "'a"
haftmann@24219
   565
      (constr thy (class, tyco));
haftmann@24219
   566
    val ty_inst = Type (tyco, map TFree sort_args);
haftmann@24219
   567
  in Logic.varifyT (map_type_tfree (K ty_inst) ty) end;
haftmann@24219
   568
haftmann@24219
   569
fun retrieve_algebra thy operational =
haftmann@24219
   570
  Sorts.subalgebra (Sign.pp thy) operational
haftmann@24219
   571
    (weakest_constraints thy)
haftmann@24219
   572
    (Sign.classes_of thy);
haftmann@24219
   573
haftmann@24219
   574
in
haftmann@24219
   575
haftmann@24219
   576
fun coregular_algebra thy = retrieve_algebra thy (K true) |> snd;
haftmann@24219
   577
fun operational_algebra thy =
haftmann@24219
   578
  let
haftmann@24219
   579
    fun add_iff_operational class =
haftmann@24219
   580
      can (AxClass.get_definition thy) class ? cons class;
haftmann@24219
   581
    val operational_classes = fold add_iff_operational (Sign.all_classes thy) []
haftmann@24219
   582
  in retrieve_algebra thy (member (op =) operational_classes) end;
haftmann@24219
   583
haftmann@24219
   584
val classop_weakest_typ = gen_classop_typ weakest_constraints;
haftmann@24219
   585
val classop_strongest_typ = gen_classop_typ strongest_constraints;
haftmann@24219
   586
haftmann@24219
   587
fun assert_func_typ thm =
haftmann@24219
   588
  let
haftmann@24219
   589
    val thy = Thm.theory_of_thm thm;
haftmann@24219
   590
    fun check_typ_classop class (const as (c, SOME tyco), thm) =
haftmann@24219
   591
          let
haftmann@24219
   592
            val (_, ty) = CodeUnit.head_func thm;
haftmann@24219
   593
            val ty_decl = classop_weakest_typ thy class (c, tyco);
haftmann@24219
   594
            val ty_strongest = classop_strongest_typ thy class (c, tyco);
haftmann@24219
   595
            fun constrain thm = 
haftmann@24219
   596
              let
haftmann@24219
   597
                val max = Thm.maxidx_of thm + 1;
haftmann@24219
   598
                val ty_decl' = Logic.incr_tvar max ty_decl;
haftmann@24219
   599
                val (_, ty') = CodeUnit.head_func thm;
haftmann@24219
   600
                val (env, _) = Sign.typ_unify thy (ty_decl', ty') (Vartab.empty, max);
haftmann@24219
   601
                val instT = Vartab.fold (fn (x_i, (sort, ty)) =>
haftmann@24219
   602
                  cons (Thm.ctyp_of thy (TVar (x_i, sort)), Thm.ctyp_of thy ty)) env [];
haftmann@24219
   603
              in Thm.instantiate (instT, []) thm end;
haftmann@24219
   604
          in if Sign.typ_instance thy (ty_strongest, ty)
haftmann@24219
   605
            then if Sign.typ_instance thy (ty, ty_decl)
haftmann@24219
   606
            then thm
haftmann@24219
   607
            else (warning ("Constraining type\n" ^ CodeUnit.string_of_typ thy ty
haftmann@24219
   608
              ^ "\nof defining equation\n"
haftmann@24219
   609
              ^ string_of_thm thm
haftmann@24219
   610
              ^ "\nto permitted most general type\n"
haftmann@24219
   611
              ^ CodeUnit.string_of_typ thy ty_decl);
haftmann@24219
   612
              constrain thm)
haftmann@24219
   613
            else CodeUnit.bad_thm ("Type\n" ^ CodeUnit.string_of_typ thy ty
haftmann@24219
   614
              ^ "\nof defining equation\n"
haftmann@24219
   615
              ^ string_of_thm thm
haftmann@24219
   616
              ^ "\nis incompatible with permitted least general type\n"
haftmann@24219
   617
              ^ CodeUnit.string_of_typ thy ty_strongest)
haftmann@24219
   618
          end
haftmann@24219
   619
      | check_typ_classop class ((c, NONE), thm) =
haftmann@24219
   620
          CodeUnit.bad_thm ("Illegal type for class operation " ^ quote c
haftmann@24219
   621
           ^ "\nin defining equation\n"
haftmann@24219
   622
           ^ string_of_thm thm);
haftmann@24219
   623
    fun check_typ_fun (const as (c, _), thm) =
haftmann@24219
   624
      let
haftmann@24219
   625
        val (_, ty) = CodeUnit.head_func thm;
haftmann@24219
   626
        val ty_decl = Sign.the_const_type thy c;
haftmann@24219
   627
      in if Sign.typ_equiv thy (Type.strip_sorts ty_decl, Type.strip_sorts ty)
haftmann@24219
   628
        then thm
haftmann@24219
   629
        else CodeUnit.bad_thm ("Type\n" ^ CodeUnit.string_of_typ thy ty
haftmann@24219
   630
           ^ "\nof defining equation\n"
haftmann@24219
   631
           ^ string_of_thm thm
haftmann@24219
   632
           ^ "\nis incompatible with declared function type\n"
haftmann@24219
   633
           ^ CodeUnit.string_of_typ thy ty_decl)
haftmann@24219
   634
      end;
haftmann@24219
   635
    fun check_typ (const as (c, _), thm) =
haftmann@24219
   636
      case AxClass.class_of_param thy c
haftmann@24219
   637
       of SOME class => check_typ_classop class (const, thm)
haftmann@24219
   638
        | NONE => check_typ_fun (const, thm);
haftmann@24219
   639
  in check_typ (fst (CodeUnit.head_func thm), thm) end;
haftmann@24219
   640
haftmann@24283
   641
val mk_func = CodeUnit.error_thm (assert_func_typ o CodeUnit.mk_func);
haftmann@24283
   642
val mk_func_liberal = CodeUnit.warning_thm (assert_func_typ o CodeUnit.mk_func);
haftmann@24219
   643
haftmann@24219
   644
end;
haftmann@24219
   645
haftmann@24219
   646
haftmann@24219
   647
haftmann@24219
   648
(** interfaces and attributes **)
haftmann@24219
   649
haftmann@24219
   650
fun add_func true thm thy =
haftmann@24219
   651
      let
haftmann@24219
   652
        val func = mk_func thm;
haftmann@24219
   653
        val (const, _) = CodeUnit.head_func func;
haftmann@24219
   654
      in map_exec_purge (SOME [const]) (map_funcs
haftmann@24219
   655
        (Consttab.map_default
haftmann@24219
   656
          (const, (Susp.value [], [])) (add_thm func))) thy
haftmann@24219
   657
      end
haftmann@24219
   658
  | add_func false thm thy =
haftmann@24219
   659
      case mk_func_liberal thm
haftmann@24219
   660
       of SOME func => let
haftmann@24219
   661
              val (const, _) = CodeUnit.head_func func
haftmann@24219
   662
            in map_exec_purge (SOME [const]) (map_funcs
haftmann@24219
   663
              (Consttab.map_default
haftmann@24219
   664
                (const, (Susp.value [], [])) (add_thm func))) thy
haftmann@24219
   665
            end
haftmann@24219
   666
        | NONE => thy;
haftmann@24219
   667
haftmann@24219
   668
fun delete_force msg key xs =
haftmann@24219
   669
  if AList.defined (op =) xs key then AList.delete (op =) key xs
haftmann@24219
   670
  else error ("No such " ^ msg ^ ": " ^ quote key);
haftmann@24219
   671
haftmann@24219
   672
fun del_func thm thy =
haftmann@24219
   673
  let
haftmann@24219
   674
    val func = mk_func thm;
haftmann@24219
   675
    val (const, _) = CodeUnit.head_func func;
haftmann@24219
   676
  in map_exec_purge (SOME [const]) (map_funcs
haftmann@24219
   677
    (Consttab.map_entry
haftmann@24219
   678
      const (del_thm func))) thy
haftmann@24219
   679
  end;
haftmann@24219
   680
haftmann@24219
   681
fun add_funcl (const, lthms) thy =
haftmann@24219
   682
  let
haftmann@24219
   683
    val lthms' = certificate thy (fn thy => certify_const thy const) lthms;
haftmann@24219
   684
      (*FIXME must check compatibility with sort algebra;
haftmann@24219
   685
        alas, naive checking results in non-termination!*)
haftmann@24219
   686
  in
haftmann@24219
   687
    map_exec_purge (SOME [const]) (map_funcs (Consttab.map_default (const, (Susp.value [], []))
haftmann@24219
   688
      (add_lthms lthms'))) thy
haftmann@24219
   689
  end;
haftmann@24219
   690
haftmann@24219
   691
fun add_func_attr strict = Attrib.internal (fn _ => Thm.declaration_attribute
haftmann@24219
   692
  (fn thm => Context.mapping (add_func strict thm) I));
haftmann@24219
   693
haftmann@24219
   694
local
haftmann@24219
   695
haftmann@24219
   696
fun del_datatype tyco thy =
haftmann@24219
   697
  case Symtab.lookup ((the_dtyps o get_exec) thy) tyco
haftmann@24219
   698
   of SOME (vs, cos) => let
haftmann@24219
   699
        val consts = CodeUnit.consts_of_cos thy tyco vs cos;
haftmann@24219
   700
      in map_exec_purge (if null consts then NONE else SOME consts)
haftmann@24219
   701
        (map_dtyps (Symtab.delete tyco)) thy end
haftmann@24219
   702
    | NONE => thy;
haftmann@24219
   703
haftmann@24219
   704
in
haftmann@24219
   705
haftmann@24219
   706
fun add_datatype (tyco, (vs_cos as (vs, cos))) thy =
haftmann@24219
   707
  let
haftmann@24219
   708
    val consts = CodeUnit.consts_of_cos thy tyco vs cos;
haftmann@24219
   709
  in
haftmann@24219
   710
    thy
haftmann@24219
   711
    |> del_datatype tyco
haftmann@24219
   712
    |> map_exec_purge (SOME consts) (map_dtyps (Symtab.update_new (tyco, vs_cos)))
haftmann@24219
   713
  end;
haftmann@24219
   714
haftmann@24219
   715
fun add_datatype_consts consts thy =
haftmann@24219
   716
  add_datatype (CodeUnit.cos_of_consts thy consts) thy;
haftmann@24219
   717
haftmann@24219
   718
fun add_datatype_consts_cmd raw_cs thy =
haftmann@24219
   719
  add_datatype_consts (map (CodeUnit.read_const thy) raw_cs) thy
haftmann@24219
   720
haftmann@24219
   721
end; (*local*)
haftmann@24219
   722
haftmann@24219
   723
fun add_inline thm thy =
haftmann@24219
   724
  (map_exec_purge NONE o map_thmproc o apfst o apfst o apfst)
haftmann@24219
   725
    (insert Thm.eq_thm_prop (CodeUnit.error_thm CodeUnit.mk_rew thm)) thy;
haftmann@24219
   726
        (*fully applied in order to get right context for mk_rew!*)
haftmann@24219
   727
haftmann@24219
   728
fun del_inline thm thy =
haftmann@24219
   729
  (map_exec_purge NONE o map_thmproc o apfst o apfst o apfst)
haftmann@24219
   730
    (remove Thm.eq_thm_prop (CodeUnit.error_thm CodeUnit.mk_rew thm)) thy;
haftmann@24219
   731
        (*fully applied in order to get right context for mk_rew!*)
haftmann@24219
   732
haftmann@24219
   733
fun add_inline_proc (name, f) =
haftmann@24219
   734
  (map_exec_purge NONE o map_thmproc o apfst o apfst o apsnd)
haftmann@24219
   735
    (AList.update (op =) (name, (serial (), f)));
haftmann@24219
   736
haftmann@24219
   737
fun del_inline_proc name =
haftmann@24219
   738
  (map_exec_purge NONE o map_thmproc o apfst o apfst o apsnd)
haftmann@24219
   739
    (delete_force "inline procedure" name);
haftmann@24219
   740
haftmann@24219
   741
fun add_preproc (name, f) =
haftmann@24219
   742
  (map_exec_purge NONE o map_thmproc o apfst o apsnd)
haftmann@24219
   743
    (AList.update (op =) (name, (serial (), f)));
haftmann@24219
   744
haftmann@24219
   745
fun del_preproc name =
haftmann@24219
   746
  (map_exec_purge NONE o map_thmproc o apfst o apsnd)
haftmann@24219
   747
    (delete_force "preprocessor" name);
haftmann@24219
   748
haftmann@24219
   749
fun add_post thm thy =
haftmann@24219
   750
  (map_exec_purge NONE o map_thmproc o apsnd)
haftmann@24219
   751
    (insert Thm.eq_thm_prop (CodeUnit.error_thm CodeUnit.mk_rew thm)) thy;
haftmann@24219
   752
        (*fully applied in order to get right context for mk_rew!*)
haftmann@24219
   753
haftmann@24219
   754
fun del_post thm thy =
haftmann@24219
   755
  (map_exec_purge NONE o map_thmproc o apsnd)
haftmann@24219
   756
    (remove Thm.eq_thm_prop (CodeUnit.error_thm CodeUnit.mk_rew thm)) thy;
haftmann@24219
   757
        (*fully applied in order to get right context for mk_rew!*)
haftmann@24219
   758
haftmann@24219
   759
val _ = Context.add_setup
haftmann@24219
   760
  (let
haftmann@24219
   761
    fun mk_attribute f = Thm.declaration_attribute (fn thm => Context.mapping (f thm) I);
haftmann@24219
   762
    fun add_simple_attribute (name, f) =
haftmann@24219
   763
      add_attribute (name, Scan.succeed (mk_attribute f));
haftmann@24219
   764
    fun add_del_attribute (name, (add, del)) =
haftmann@24219
   765
      add_attribute (name, Args.del |-- Scan.succeed (mk_attribute del)
haftmann@24219
   766
        || Scan.succeed (mk_attribute add))
haftmann@24219
   767
  in
haftmann@24219
   768
    add_del_attribute ("func", (add_func true, del_func))
haftmann@24219
   769
    #> add_del_attribute ("inline", (add_inline, del_inline))
haftmann@24219
   770
    #> add_del_attribute ("post", (add_post, del_post))
haftmann@24219
   771
  end);
haftmann@24219
   772
haftmann@24219
   773
haftmann@24219
   774
(** post- and preprocessing **)
haftmann@24219
   775
haftmann@24219
   776
local
haftmann@24219
   777
haftmann@24219
   778
fun gen_apply_inline_proc prep post thy f x =
haftmann@24219
   779
  let
haftmann@24219
   780
    val cts = prep x;
haftmann@24219
   781
    val rews = map CodeUnit.assert_rew (f thy cts);
haftmann@24219
   782
  in post rews x end;
haftmann@24219
   783
haftmann@24219
   784
val apply_inline_proc = gen_apply_inline_proc (maps
haftmann@24219
   785
  ((fn [args, rhs] => rhs :: (snd o Drule.strip_comb) args) o snd o Drule.strip_comb o Thm.cprop_of))
haftmann@24219
   786
  (fn rews => map (CodeUnit.rewrite_func rews));
haftmann@24219
   787
val apply_inline_proc_cterm = gen_apply_inline_proc single
haftmann@24219
   788
  (MetaSimplifier.rewrite false);
haftmann@24219
   789
haftmann@24219
   790
fun apply_preproc thy f [] = []
haftmann@24219
   791
  | apply_preproc thy f (thms as (thm :: _)) =
haftmann@24219
   792
      let
haftmann@24219
   793
        val (const, _) = CodeUnit.head_func thm;
haftmann@24219
   794
        val thms' = f thy thms;
haftmann@24219
   795
      in certify_const thy const thms' end;
haftmann@24219
   796
haftmann@24219
   797
fun rhs_conv conv thm =
haftmann@24219
   798
  let
haftmann@24219
   799
    val thm' = (conv o Thm.rhs_of) thm;
haftmann@24219
   800
  in Thm.transitive thm thm' end
haftmann@24219
   801
haftmann@24219
   802
in
haftmann@24219
   803
haftmann@24219
   804
fun preprocess thy thms =
haftmann@24219
   805
  thms
haftmann@24219
   806
  |> fold (fn (_, (_, f)) => apply_preproc thy f) ((#preprocs o the_thmproc o get_exec) thy)
haftmann@24219
   807
  |> map (CodeUnit.rewrite_func ((#inlines o the_thmproc o get_exec) thy))
haftmann@24219
   808
  |> fold (fn (_, (_, f)) => apply_inline_proc thy f) ((#inline_procs o the_thmproc o get_exec) thy)
haftmann@24219
   809
(*FIXME - must check: rewrite rule, defining equation, proper constant |> map (snd o check_func false thy) *)
haftmann@24219
   810
  |> common_typ_funcs;
haftmann@24219
   811
haftmann@24219
   812
fun preprocess_conv ct =
haftmann@24219
   813
  let
haftmann@24219
   814
    val thy = Thm.theory_of_cterm ct;
haftmann@24219
   815
  in
haftmann@24219
   816
    ct
haftmann@24219
   817
    |> MetaSimplifier.rewrite false ((#inlines o the_thmproc o get_exec) thy)
haftmann@24219
   818
    |> fold (fn (_, (_, f)) => rhs_conv (apply_inline_proc_cterm thy f))
haftmann@24219
   819
        ((#inline_procs o the_thmproc o get_exec) thy)
haftmann@24219
   820
  end;
haftmann@24219
   821
haftmann@24219
   822
fun postprocess_conv ct =
haftmann@24219
   823
  let
haftmann@24219
   824
    val thy = Thm.theory_of_cterm ct;
haftmann@24219
   825
  in
haftmann@24219
   826
    ct
haftmann@24219
   827
    |> MetaSimplifier.rewrite false ((#posts o the_thmproc o get_exec) thy)
haftmann@24219
   828
  end;
haftmann@24219
   829
haftmann@24219
   830
end; (*local*)
haftmann@24219
   831
haftmann@24219
   832
fun get_datatype thy tyco =
haftmann@24219
   833
  case Symtab.lookup ((the_dtyps o get_exec) thy) tyco
haftmann@24219
   834
   of SOME spec => spec
haftmann@24219
   835
    | NONE => Sign.arity_number thy tyco
haftmann@24219
   836
        |> Name.invents Name.context "'a"
haftmann@24219
   837
        |> map (rpair [])
haftmann@24219
   838
        |> rpair [];
haftmann@24219
   839
haftmann@24219
   840
fun get_datatype_of_constr thy const =
haftmann@24219
   841
  case CodeUnit.co_of_const' thy const
haftmann@24219
   842
   of SOME (tyco, (_, co)) => if member eq_co
haftmann@24219
   843
        (Symtab.lookup (((the_dtyps o get_exec) thy)) tyco
haftmann@24219
   844
          |> Option.map snd
haftmann@24219
   845
          |> the_default []) co then SOME tyco else NONE
haftmann@24219
   846
    | NONE => NONE;
haftmann@24219
   847
haftmann@24219
   848
fun get_constr_typ thy const =
haftmann@24219
   849
  case get_datatype_of_constr thy const
haftmann@24219
   850
   of SOME tyco => let
haftmann@24219
   851
        val (vs, cos) = get_datatype thy tyco;
haftmann@24219
   852
        val (_, (_, (co, tys))) = CodeUnit.co_of_const thy const
haftmann@24219
   853
      in (tys ---> Type (tyco, map TFree vs))
haftmann@24219
   854
        |> map_atyps (fn TFree (v, _) => TFree (v, AList.lookup (op =) vs v |> the))
haftmann@24219
   855
        |> Logic.varifyT
haftmann@24219
   856
        |> SOME end
haftmann@24219
   857
    | NONE => NONE;
haftmann@24219
   858
haftmann@24219
   859
fun default_typ_proto thy (const as (c, SOME tyco)) = classop_weakest_typ thy
haftmann@24219
   860
      ((the o AxClass.class_of_param thy) c) (c, tyco) |> SOME
haftmann@24219
   861
  | default_typ_proto thy (const as (c, NONE)) = case AxClass.class_of_param thy c
haftmann@24219
   862
       of SOME class => SOME (Term.map_type_tvar
haftmann@24219
   863
            (K (TVar (("'a", 0), [class]))) (Sign.the_const_type thy c))
haftmann@24219
   864
        | NONE => get_constr_typ thy const;
haftmann@24219
   865
haftmann@24219
   866
local
haftmann@24219
   867
haftmann@24219
   868
fun get_funcs thy const =
haftmann@24219
   869
  Consttab.lookup ((the_funcs o get_exec) thy) const
haftmann@24219
   870
  |> Option.map (Susp.force o fst)
haftmann@24219
   871
  |> these
haftmann@24219
   872
  |> map (Thm.transfer thy);
haftmann@24219
   873
haftmann@24219
   874
in
haftmann@24219
   875
haftmann@24219
   876
fun these_funcs thy const =
haftmann@24219
   877
  let
haftmann@24219
   878
    fun drop_refl thy = filter_out (is_equal o Term.fast_term_ord o Logic.dest_equals
haftmann@24219
   879
      o ObjectLogic.drop_judgment thy o Thm.plain_prop_of);
haftmann@24219
   880
  in
haftmann@24219
   881
    get_funcs thy const
haftmann@24219
   882
    |> preprocess thy
haftmann@24219
   883
    |> drop_refl thy
haftmann@24219
   884
  end;
haftmann@24219
   885
haftmann@24219
   886
fun default_typ thy (const as (c, _)) = case default_typ_proto thy const
haftmann@24219
   887
 of SOME ty => ty
haftmann@24219
   888
  | NONE => (case get_funcs thy const
haftmann@24219
   889
     of thm :: _ => snd (CodeUnit.head_func thm)
haftmann@24219
   890
      | [] => Sign.the_const_type thy c);
haftmann@24219
   891
haftmann@24219
   892
end; (*local*)
haftmann@24219
   893
haftmann@24219
   894
end; (*struct*)
haftmann@24219
   895
haftmann@24219
   896
haftmann@24219
   897
(** type-safe interfaces for data depedent on executable content **)
haftmann@24219
   898
haftmann@24219
   899
functor CodeDataFun(Data: CODE_DATA_ARGS): CODE_DATA =
haftmann@24219
   900
struct
haftmann@24219
   901
haftmann@24219
   902
type T = Data.T;
haftmann@24219
   903
exception Data of T;
haftmann@24219
   904
fun dest (Data x) = x
haftmann@24219
   905
haftmann@24219
   906
val kind = Code.declare_data (Data Data.empty)
haftmann@24219
   907
  (fn pp => fn (Data x1, Data x2) => Data (Data.merge pp (x1, x2)))
haftmann@24219
   908
  (fn thy_opt => fn cs => fn Data x => Data (Data.purge thy_opt cs x));
haftmann@24219
   909
haftmann@24219
   910
val data_op = (kind, Data, dest);
haftmann@24219
   911
haftmann@24219
   912
val get = Code.get_data data_op;
haftmann@24219
   913
val change = Code.change_data data_op;
haftmann@24219
   914
fun change_yield thy = Code.change_yield_data data_op thy;
haftmann@24219
   915
haftmann@24219
   916
end;
haftmann@24219
   917
haftmann@24219
   918
structure Code : CODE =
haftmann@24219
   919
struct
haftmann@24219
   920
haftmann@24219
   921
open Code;
haftmann@24219
   922
haftmann@24219
   923
end;