src/Pure/Isar/code.ML
author haftmann
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(*  Title:      Pure/Isar/code.ML
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    Author:     Florian Haftmann, TU Muenchen
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Abstract executable ingredients of theory.  Management of data
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dependent on executable ingredients as synchronized cache; purged
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on any change of underlying executable ingredients.
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*)
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signature CODE =
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sig
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  (*constants*)
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  val check_const: theory -> term -> string
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  val read_bare_const: theory -> string -> string * typ
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  val read_const: theory -> string -> string
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  val string_of_const: theory -> string -> string
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  val cert_signature: theory -> typ -> typ
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  val read_signature: theory -> string -> typ
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  val const_typ: theory -> string -> typ
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  val subst_signatures: theory -> term -> term
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  val args_number: theory -> string -> int
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  (*constructor sets*)
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  val constrset_of_consts: theory -> (string * typ) list
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    -> string * ((string * sort) list * (string * typ list) list)
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  (*code equations*)
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  val mk_eqn: theory -> thm * bool -> thm * bool
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  val mk_eqn_warning: theory -> thm -> (thm * bool) option
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  val mk_eqn_liberal: theory -> thm -> (thm * bool) option
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  val assert_eqn: theory -> thm * bool -> thm * bool
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  val assert_eqns_const: theory -> string
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    -> (thm * bool) list -> (thm * bool) list
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  val const_typ_eqn: theory -> thm -> string * typ
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  val typscheme_eqn: theory -> thm -> (string * sort) list * typ
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  val typscheme_eqns: theory -> string -> thm list -> (string * sort) list * typ
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  val standard_typscheme: theory -> thm list -> thm list
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  (*executable code*)
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  val add_type: string -> theory -> theory
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  val add_type_cmd: string -> theory -> theory
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  val add_signature: string * typ -> theory -> theory
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  val add_signature_cmd: string * string -> theory -> theory
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  val add_datatype: (string * typ) list -> theory -> theory
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  val add_datatype_cmd: string list -> theory -> theory
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  val type_interpretation:
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    (string * ((string * sort) list * (string * typ list) list)
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      -> theory -> theory) -> theory -> theory
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  val add_eqn: thm -> theory -> theory
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  val add_nbe_eqn: thm -> theory -> theory
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  val add_default_eqn: thm -> theory -> theory
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  val add_default_eqn_attribute: attribute
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  val add_default_eqn_attrib: Attrib.src
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  val del_eqn: thm -> theory -> theory
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  val del_eqns: string -> theory -> theory
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  val add_case: thm -> theory -> theory
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  val add_undefined: string -> theory -> theory
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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 -> string -> string option
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  val these_eqns: theory -> string -> (thm * bool) list
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  val all_eqns: theory -> (thm * bool) list
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  val get_case_scheme: theory -> string -> (int * (int * string list)) option
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  val undefineds: theory -> string list
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  val print_codesetup: theory -> unit
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  (*infrastructure*)
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  val set_code_target_attr: (string -> thm -> theory -> theory) -> theory -> theory
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  val purge_data: theory -> theory
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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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end;
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signature CODE_DATA =
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  type T
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  val change: theory -> (theory -> T -> T) -> T
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  val change_yield: theory -> (theory -> T -> 'a * T) -> 'a * T
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end;
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signature PRIVATE_CODE =
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  include CODE
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  val declare_data: Object.T -> serial
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  val change_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> (theory -> 'a -> 'a) -> 'a
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  val change_yield_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> (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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(** auxiliary **)
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(* printing *)
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fun string_of_typ thy = setmp_CRITICAL show_sorts true (Syntax.string_of_typ_global thy);
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fun string_of_const thy c = case AxClass.inst_of_param thy c
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 of SOME (c, tyco) => Sign.extern_const thy c ^ " " ^ enclose "[" "]" (Sign.extern_type thy tyco)
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  | NONE => Sign.extern_const thy c;
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(* constants *)
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fun typ_equiv tys = Type.raw_instance tys andalso Type.raw_instance (swap tys);
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fun check_bare_const thy t = case try dest_Const t
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 of SOME c_ty => c_ty
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  | NONE => error ("Not a constant: " ^ Syntax.string_of_term_global thy t);
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fun check_const thy = AxClass.unoverload_const thy o check_bare_const thy;
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fun read_bare_const thy = check_bare_const thy o Syntax.read_term_global thy;
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fun read_const thy = AxClass.unoverload_const thy o read_bare_const thy;
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(** data store **)
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(* code equations *)
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type eqns = bool * (thm * bool) list;
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  (*default flag, theorems with proper flag *)
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fun add_drop_redundant thy (thm, proper) thms =
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  let
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    val args_of = snd o strip_comb o map_types Type.strip_sorts
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      o fst o Logic.dest_equals o Thm.plain_prop_of;
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    val args = args_of thm;
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    val incr_idx = Logic.incr_indexes ([], Thm.maxidx_of thm + 1);
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    fun matches_args args' = length args <= length args' andalso
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      Pattern.matchess thy (args, (map incr_idx o take (length args)) args');
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    fun drop (thm', proper') = if (proper orelse not proper')
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      andalso matches_args (args_of thm') then 
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        (warning ("Code generator: dropping redundant code equation\n" ^
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            Display.string_of_thm_global thy thm'); true)
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      else false;
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  in (thm, proper) :: filter_out drop thms end;
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fun add_thm thy _ thm (false, thms) = (false, add_drop_redundant thy thm thms)
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  | add_thm thy true thm (true, thms) = (true, thms @ [thm])
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  | add_thm thy false thm (true, thms) = (false, [thm]);
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fun del_thm thm = apsnd (remove (eq_fst Thm.eq_thm_prop) (thm, true));
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(* executable code data *)
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datatype spec = Spec of {
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  history_concluded: bool,
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  signatures: int Symtab.table * typ Symtab.table,
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  eqns: ((bool * eqns) * (serial * eqns) list) Symtab.table
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    (*with explicit history*),
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  dtyps: ((serial * ((string * sort) list * (string * typ list) list)) list) Symtab.table
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    (*with explicit history*),
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  cases: (int * (int * string list)) Symtab.table * unit Symtab.table
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};
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fun make_spec (history_concluded, ((signatures, eqns), (dtyps, cases))) =
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  Spec { history_concluded = history_concluded,
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    signatures = signatures, eqns = eqns, dtyps = dtyps, cases = cases };
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fun map_spec f (Spec { history_concluded = history_concluded, signatures = signatures,
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  eqns = eqns, dtyps = dtyps, cases = cases }) =
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  make_spec (f (history_concluded, ((signatures, eqns), (dtyps, cases))));
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fun merge_spec (Spec { history_concluded = _, signatures = (tycos1, sigs1), eqns = eqns1,
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    dtyps = dtyps1, cases = (cases1, undefs1) },
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  Spec { history_concluded = _, signatures = (tycos2, sigs2), eqns = eqns2,
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    dtyps = dtyps2, cases = (cases2, undefs2) }) =
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  let
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    val signatures = (Symtab.merge (op =) (tycos1, tycos2),
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      Symtab.merge typ_equiv (sigs1, sigs2));
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    fun merge_eqns ((_, history1), (_, history2)) =
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      let
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        val raw_history = AList.merge (op = : serial * serial -> bool)
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          (K true) (history1, history2)
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        val filtered_history = filter_out (fst o snd) raw_history
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        val history = if null filtered_history
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          then raw_history else filtered_history;
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      in ((false, (snd o hd) history), history) end;
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    val eqns = Symtab.join (K merge_eqns) (eqns1, eqns2);
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    val dtyps = Symtab.join (K (AList.merge (op =) (K true))) (dtyps1, dtyps2);
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    val cases = (Symtab.merge (K true) (cases1, cases2),
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      Symtab.merge (K true) (undefs1, undefs2));
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  in make_spec (false, ((signatures, eqns), (dtyps, cases))) end;
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fun history_concluded (Spec { history_concluded, ... }) = history_concluded;
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fun the_signatures (Spec { signatures, ... }) = signatures;
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fun the_eqns (Spec { eqns, ... }) = eqns;
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fun the_dtyps (Spec { dtyps, ... }) = dtyps;
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fun the_cases (Spec { cases, ... }) = cases;
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val map_history_concluded = map_spec o apfst;
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val map_signatures = map_spec o apsnd o apfst o apfst;
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val map_eqns = map_spec o apsnd o apfst o apsnd;
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val map_dtyps = map_spec o apsnd o apsnd o apfst;
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val map_cases = map_spec o apsnd o apsnd o apsnd;
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(* data slots dependent on executable code *)
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(*private copy avoids potential conflict of table exceptions*)
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structure Datatab = Table(type key = int val ord = int_ord);
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local
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type kind = { empty: Object.T };
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val kinds = Unsynchronized.ref (Datatab.empty: kind Datatab.table);
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fun invoke f k = case Datatab.lookup (! kinds) k
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 of SOME kind => f kind
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  | NONE => sys_error "Invalid code data identifier";
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in
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fun declare_data empty =
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  let
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    val k = serial ();
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    val kind = { empty = empty };
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    val _ = CRITICAL (fn () => Unsynchronized.change kinds (Datatab.update (k, kind)));
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  in k end;
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fun invoke_init k = invoke (fn kind => #empty kind) k;
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end; (*local*)
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(* theory store *)
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local
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type data = Object.T Datatab.table;
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fun empty_dataref () = Synchronized.var "code data" (NONE : (data * theory_ref) option);
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structure Code_Data = Theory_Data
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(
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  type T = spec * (data * theory_ref) option Synchronized.var;
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  val empty = (make_spec (false, (((Symtab.empty, Symtab.empty), Symtab.empty),
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    (Symtab.empty, (Symtab.empty, Symtab.empty)))), empty_dataref ());
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  val extend = I
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  fun merge ((spec1, _), (spec2, _)) =
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    (merge_spec (spec1, spec2), empty_dataref ());
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);
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in
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(* access to executable code *)
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val the_exec = fst o Code_Data.get;
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fun map_exec_purge f = Code_Data.map (fn (exec, _) => (f exec, empty_dataref ()));
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val purge_data = (Code_Data.map o apsnd) (fn _ => empty_dataref ());
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fun change_eqns delete c f = (map_exec_purge o map_eqns
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  o (if delete then Symtab.map_entry c else Symtab.map_default (c, ((false, (true, [])), [])))
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    o apfst) (fn (_, eqns) => (true, f eqns));
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(* tackling equation history *)
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fun continue_history thy = if (history_concluded o the_exec) thy
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  then thy
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    |> (Code_Data.map o apfst o map_history_concluded) (K false)
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    |> SOME
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  else NONE;
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fun conclude_history thy = if (history_concluded o the_exec) thy
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  then NONE
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  else thy
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    |> (Code_Data.map o apfst)
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        ((map_eqns o Symtab.map) (fn ((changed, current), history) =>
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          ((false, current),
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            if changed then (serial (), current) :: history else history))
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        #> map_history_concluded (K true))
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    |> SOME;
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val _ = Context.>> (Context.map_theory (Theory.at_begin continue_history #> Theory.at_end conclude_history));
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(* access to data dependent on abstract executable code *)
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fun change_yield_data (kind, mk, dest) theory f =
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  let
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    val dataref = (snd o Code_Data.get) theory;
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    val (datatab, thy, thy_ref) = case Synchronized.value dataref
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     of SOME (datatab, thy_ref) => (datatab, Theory.deref thy_ref, thy_ref)
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      | NONE => (Datatab.empty, theory, Theory.check_thy theory)
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    val data = case Datatab.lookup datatab kind
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     of SOME data => data
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      | NONE => invoke_init kind;
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    val result as (x, data') = f thy (dest data);
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    val _ = Synchronized.change dataref
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      ((K o SOME) (Datatab.update (kind, mk data') datatab, thy_ref));
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  in result end;
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fun change_data ops theory f = change_yield_data ops theory (pair () oo f) |> snd;
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end; (*local*)
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(** foundation **)
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(* constants *)
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fun arity_number thy tyco = case Symtab.lookup ((fst o the_signatures o the_exec) thy) tyco
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 of SOME n => n
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  | NONE => Sign.arity_number thy tyco;
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fun build_tsig thy =
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  let
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    val (tycos, _) = (the_signatures o the_exec) thy;
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    val decls = (#types o Type.rep_tsig o Sign.tsig_of) thy
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      |> apsnd (Symtab.fold (fn (tyco, n) =>
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          Symtab.update (tyco, Type.LogicalType n)) tycos);
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  in Type.build_tsig ((Name_Space.empty "", Sorts.empty_algebra), [], decls) end;
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fun cert_signature thy = Logic.varifyT o Type.cert_typ (build_tsig thy) o Type.no_tvars;
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fun read_signature thy = cert_signature thy o Type.strip_sorts
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  o Syntax.parse_typ (ProofContext.init thy);
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fun expand_signature thy = Type.cert_typ_mode Type.mode_syntax (Sign.tsig_of thy);
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fun lookup_typ thy = Symtab.lookup ((snd o the_signatures o the_exec) thy);
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   330
317933ce3712 crude support for type aliasses and corresponding constant signatures
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parents: 33756
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   331
fun const_typ thy c = case lookup_typ thy c
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diff changeset
   332
 of SOME ty => ty
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   333
  | NONE => (Type.strip_sorts o Sign.the_const_type thy) c;
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haftmann
parents: 33756
diff changeset
   334
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   335
fun subst_signature thy c ty =
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haftmann
parents: 33756
diff changeset
   336
  let
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   337
    fun mk_subst (Type (tyco, tys1)) (ty2 as Type (tyco2, tys2)) =
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haftmann
parents: 33756
diff changeset
   338
          fold2 mk_subst tys1 tys2
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   339
      | mk_subst ty (TVar (v, sort)) = Vartab.update (v, ([], ty))
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   340
  in case lookup_typ thy c
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   341
   of SOME ty' => Envir.subst_type (mk_subst ty (expand_signature thy ty') Vartab.empty) ty'
317933ce3712 crude support for type aliasses and corresponding constant signatures
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parents: 33756
diff changeset
   342
    | NONE => ty
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   343
  end;
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diff changeset
   344
317933ce3712 crude support for type aliasses and corresponding constant signatures
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   345
fun subst_signatures thy = map_aterms (fn Const (c, ty) => Const (c, subst_signature thy c ty) | t => t);
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parents: 33756
diff changeset
   346
317933ce3712 crude support for type aliasses and corresponding constant signatures
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parents: 33756
diff changeset
   347
fun args_number thy = length o fst o strip_type o const_typ thy;
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   348
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   349
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   350
(* datatypes *)
31156
90fed3d4430f merged module code_unit.ML into code.ML
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parents: 31152
diff changeset
   351
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   352
fun constrset_of_consts thy cs =
90fed3d4430f merged module code_unit.ML into code.ML
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parents: 31152
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   353
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   354
    val _ = map (fn (c, _) => if (is_some o AxClass.class_of_param thy) c
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   355
      then error ("Is a class parameter: " ^ string_of_const thy c) else ()) cs;
33531
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   356
    fun no_constr s (c, ty) = error ("Not a datatype constructor:\n" ^ string_of_const thy c
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   357
      ^ " :: " ^ string_of_typ thy ty ^ "\n" ^ enclose "(" ")" s);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   358
    fun last_typ c_ty ty =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   359
      let
33531
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   360
        val tfrees = Term.add_tfreesT ty [];
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   361
        val (tyco, vs) = ((apsnd o map) (dest_TFree) o dest_Type o snd o strip_type) ty
33531
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   362
          handle TYPE _ => no_constr "bad type" c_ty
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   363
        val _ = if has_duplicates (eq_fst (op =)) vs
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   364
          then no_constr "duplicate type variables in datatype" c_ty else ();
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   365
        val _ = if length tfrees <> length vs
2c0a4adbcf13 tuned error messages; tuned code
haftmann
parents: 33522
diff changeset
   366
          then no_constr "type variables missing in datatype" c_ty else ();
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   367
      in (tyco, vs) end;
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   368
    fun ty_sorts (c, raw_ty) =
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90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   369
      let
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   370
        val ty = subst_signature thy c raw_ty;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   371
        val ty_decl = (Logic.unvarifyT o const_typ thy) c;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   372
        val (tyco, _) = last_typ (c, ty) ty_decl;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   373
        val (_, vs) = last_typ (c, ty) ty;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   374
      in ((tyco, map snd vs), (c, (map fst vs, ty))) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   375
    fun add ((tyco', sorts'), c) ((tyco, sorts), cs) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   376
      let
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   377
        val _ = if (tyco' : string) <> tyco
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   378
          then error "Different type constructors in constructor set"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   379
          else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   380
        val sorts'' = map2 (curry (Sorts.inter_sort (Sign.classes_of thy))) sorts' sorts
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   381
      in ((tyco, sorts), c :: cs) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   382
    fun inst vs' (c, (vs, ty)) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   383
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   384
        val the_v = the o AList.lookup (op =) (vs ~~ vs');
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   385
        val ty' = map_atyps (fn TFree (v, _) => TFree (the_v v)) ty;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   386
      in (c, (fst o strip_type) ty') end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   387
    val c' :: cs' = map ty_sorts cs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   388
    val ((tyco, sorts), cs'') = fold add cs' (apsnd single c');
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   389
    val vs = Name.names Name.context Name.aT sorts;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   390
    val cs''' = map (inst vs) cs'';
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   391
  in (tyco, (vs, rev cs''')) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   392
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   393
fun get_datatype thy tyco =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   394
  case these (Symtab.lookup ((the_dtyps o the_exec) thy) tyco)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   395
   of (_, spec) :: _ => spec
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   396
    | [] => arity_number thy tyco
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   397
        |> Name.invents Name.context Name.aT
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   398
        |> map (rpair [])
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   399
        |> rpair [];
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   400
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   401
fun get_datatype_of_constr thy c =
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   402
  case (snd o strip_type o const_typ thy) c
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   403
   of Type (tyco, _) => if member (op =) ((map fst o snd o get_datatype thy) tyco) c
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   404
       then SOME tyco else NONE
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   405
    | _ => NONE;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   406
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   407
fun is_constr thy = is_some o get_datatype_of_constr thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   408
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   409
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   410
(* code equations *)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   411
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   412
exception BAD_THM of string;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   413
fun bad_thm msg = raise BAD_THM msg;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   414
fun error_thm f thm = f thm handle BAD_THM msg => error msg;
31642
ce68241f711f permissive code attribute; all_eqns
haftmann
parents: 31599
diff changeset
   415
fun warning_thm f thm = SOME (f thm) handle BAD_THM msg => (warning msg; NONE)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   416
fun try_thm f thm = SOME (f thm) handle BAD_THM _ => NONE;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   417
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   418
fun is_linear thm =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   419
  let val (_, args) = (strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of) thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   420
  in not (has_duplicates (op =) ((fold o fold_aterms)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   421
    (fn Var (v, _) => cons v | _ => I) args [])) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   422
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   423
fun gen_assert_eqn thy is_constr_pat (thm, proper) =
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   424
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   425
    val (lhs, rhs) = (Logic.dest_equals o Thm.plain_prop_of) thm
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   426
      handle TERM _ => bad_thm ("Not an equation: " ^ Display.string_of_thm_global thy thm)
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   427
           | THM _ => bad_thm ("Not an equation: " ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   428
    fun vars_of t = fold_aterms (fn Var (v, _) => insert (op =) v
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   429
      | Free _ => bad_thm ("Illegal free variable in equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   430
          ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   431
      | _ => I) t [];
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   432
    fun tvars_of t = fold_term_types (fn _ =>
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   433
      fold_atyps (fn TVar (v, _) => insert (op =) v
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   434
        | TFree _ => bad_thm 
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   435
      ("Illegal free type variable in equation\n" ^ Display.string_of_thm_global thy thm))) t [];
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   436
    val lhs_vs = vars_of lhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   437
    val rhs_vs = vars_of rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   438
    val lhs_tvs = tvars_of lhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   439
    val rhs_tvs = tvars_of rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   440
    val _ = if null (subtract (op =) lhs_vs rhs_vs)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   441
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   442
      else bad_thm ("Free variables on right hand side of equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   443
        ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   444
    val _ = if null (subtract (op =) lhs_tvs rhs_tvs)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   445
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   446
      else bad_thm ("Free type variables on right hand side of equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   447
        ^ Display.string_of_thm_global thy thm)
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   448
    val (head, args) = (strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of) thm;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   449
    val (c, ty) = case head
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   450
     of Const (c_ty as (_, ty)) => (AxClass.unoverload_const thy c_ty, ty)
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   451
      | _ => bad_thm ("Equation not headed by constant\n" ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   452
    fun check _ (Abs _) = bad_thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   453
          ("Abstraction on left hand side of equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   454
            ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   455
      | check 0 (Var _) = ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   456
      | check _ (Var _) = bad_thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   457
          ("Variable with application on left hand side of equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   458
            ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   459
      | check n (t1 $ t2) = (check (n+1) t1; check 0 t2)
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   460
      | check n (Const (c_ty as (_, ty))) =
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   461
          let
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   462
            val c' = AxClass.unoverload_const thy c_ty
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   463
          in if n = (length o fst o strip_type o subst_signature thy c') ty
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   464
            then if not proper orelse is_constr_pat c'
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   465
              then ()
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   466
              else bad_thm (quote c ^ " is not a constructor, on left hand side of equation\n"
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   467
                ^ Display.string_of_thm_global thy thm)
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   468
            else bad_thm
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   469
              ("Partially applied constant " ^ quote c ^ " on left hand side of equation\n"
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   470
                 ^ Display.string_of_thm_global thy thm)
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   471
          end;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   472
    val _ = map (check 0) args;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   473
    val _ = if not proper orelse is_linear thm then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   474
      else bad_thm ("Duplicate variables on left hand side of equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   475
        ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   476
    val _ = if (is_none o AxClass.class_of_param thy) c
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   477
      then ()
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   478
      else bad_thm ("Overloaded constant as head in equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   479
        ^ Display.string_of_thm_global thy thm)
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   480
    val _ = if not (is_constr thy c)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   481
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   482
      else bad_thm ("Constructor as head in equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   483
        ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   484
    val ty_decl = Sign.the_const_type thy c;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   485
    val _ = if Sign.typ_equiv thy (Type.strip_sorts ty_decl, Type.strip_sorts ty)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   486
      then () else bad_thm ("Type\n" ^ string_of_typ thy ty
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   487
           ^ "\nof equation\n"
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   488
           ^ Display.string_of_thm_global thy thm
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   489
           ^ "\nis incompatible with declared function type\n"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   490
           ^ string_of_typ thy ty_decl)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   491
  in (thm, proper) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   492
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   493
fun assert_eqn thy = error_thm (gen_assert_eqn thy (is_constr thy));
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   494
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   495
fun meta_rewrite thy = LocalDefs.meta_rewrite_rule (ProofContext.init thy);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   496
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   497
fun mk_eqn thy = error_thm (gen_assert_eqn thy (K true)) o
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   498
  apfst (meta_rewrite thy);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   499
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   500
fun mk_eqn_warning thy = Option.map (fn (thm, _) => (thm, is_linear thm))
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   501
  o warning_thm (gen_assert_eqn thy (K true)) o rpair false o meta_rewrite thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   502
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   503
fun mk_eqn_liberal thy = Option.map (fn (thm, _) => (thm, is_linear thm))
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   504
  o try_thm (gen_assert_eqn thy (K true)) o rpair false o meta_rewrite thy;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   505
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   506
val head_eqn = dest_Const o fst o strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   507
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   508
fun const_typ_eqn thy thm =
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   509
  let
32640
ba6531df2c64 corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents: 32544
diff changeset
   510
    val (c, ty) = head_eqn thm;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   511
    val c' = AxClass.unoverload_const thy (c, ty);
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   512
      (*permissive wrt. to overloaded constants!*)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   513
  in (c', ty) end;
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   514
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   515
fun const_eqn thy = fst o const_typ_eqn thy;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   516
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   517
fun raw_typscheme thy (c, ty) =
32873
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   518
  (map dest_TFree (Sign.const_typargs thy (c, ty)), Type.strip_sorts ty);
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   519
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   520
fun typscheme thy (c, ty) = raw_typscheme thy (c, subst_signature thy c ty);
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   521
32873
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   522
fun typscheme_eqn thy = typscheme thy o apsnd Logic.unvarifyT o const_typ_eqn thy;
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   523
32873
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   524
fun typscheme_eqns thy c [] = 
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   525
      let
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   526
        val raw_ty = const_typ thy c;
32873
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   527
        val tvars = Term.add_tvar_namesT raw_ty [];
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   528
        val tvars' = case AxClass.class_of_param thy c
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   529
         of SOME class => [TFree (Name.aT, [class])]
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   530
          | NONE => Name.invent_list [] Name.aT (length tvars)
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   531
              |> map (fn v => TFree (v, []));
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   532
        val ty = typ_subst_TVars (tvars ~~ tvars') raw_ty;
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   533
      in raw_typscheme thy (c, ty) end
33969
1e7ca47c6c3d dropped some unused bindings
haftmann
parents: 33957
diff changeset
   534
  | typscheme_eqns thy c (thm :: _) = typscheme_eqn thy thm;
32872
019201eb7e07 variables in type schemes must be renamed simultaneously with variables in equations
haftmann
parents: 32738
diff changeset
   535
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   536
fun assert_eqns_const thy c eqns =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   537
  let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   538
    fun cert (eqn as (thm, _)) = if c = const_eqn thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   539
      then eqn else error ("Wrong head of code equation,\nexpected constant "
32091
30e2ffbba718 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents: 32070
diff changeset
   540
        ^ string_of_const thy c ^ "\n" ^ Display.string_of_thm_global thy thm)
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   541
  in map (cert o assert_eqn thy) eqns end;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   542
32929
0e9e13ac06d7 sharpened name
haftmann
parents: 32928
diff changeset
   543
fun standard_typscheme thy thms =
32354
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   544
  let
32640
ba6531df2c64 corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents: 32544
diff changeset
   545
    fun tvars_of T = rev (Term.add_tvarsT T []);
ba6531df2c64 corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents: 32544
diff changeset
   546
    val vss = map (tvars_of o snd o head_eqn) thms;
32354
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   547
    fun inter_sorts vs =
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   548
      fold (curry (Sorts.inter_sort (Sign.classes_of thy)) o snd) vs [];
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   549
    val sorts = map_transpose inter_sorts vss;
32873
333945c9ac6a tuned handling of type variable names further
haftmann
parents: 32872
diff changeset
   550
    val vts = Name.names Name.context Name.aT sorts
32354
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   551
      |> map (fn (v, sort) => TVar ((v, 0), sort));
bb40e900e1f3 same_typscheme replaces ugly common_typ_eqns
haftmann
parents: 32347
diff changeset
   552
  in map2 (fn vs => Thm.certify_instantiate (vs ~~ vts, [])) vss thms end;
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   553
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   554
fun these_eqns thy c =
34244
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   555
  Symtab.lookup ((the_eqns o the_exec) thy) c
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   556
  |> Option.map (snd o snd o fst)
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   557
  |> these
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   558
  |> (map o apfst) (Thm.transfer thy)
32929
0e9e13ac06d7 sharpened name
haftmann
parents: 32928
diff changeset
   559
  |> burrow_fst (standard_typscheme thy);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   560
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   561
fun all_eqns thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   562
  Symtab.dest ((the_eqns o the_exec) thy)
33006
cda9a931a46b dropped lazy code equations
haftmann
parents: 32966
diff changeset
   563
  |> maps (snd o snd o fst o snd);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   564
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   565
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   566
(* cases *)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   567
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   568
fun case_certificate thm =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   569
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   570
    val ((head, raw_case_expr), cases) = (apfst Logic.dest_equals
32640
ba6531df2c64 corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents: 32544
diff changeset
   571
      o apsnd Logic.dest_conjunctions o Logic.dest_implies o Thm.plain_prop_of) thm;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   572
    val _ = case head of Free _ => true
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   573
      | Var _ => true
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   574
      | _ => raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   575
    val ([(case_var, _)], case_expr) = Term.strip_abs_eta 1 raw_case_expr;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   576
    val (Const (case_const, _), raw_params) = strip_comb case_expr;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   577
    val n = find_index (fn Free (v, _) => v = case_var | _ => false) raw_params;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   578
    val _ = if n = ~1 then raise TERM ("case_cert", []) else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   579
    val params = map (fst o dest_Var) (nth_drop n raw_params);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   580
    fun dest_case t =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   581
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   582
        val (head' $ t_co, rhs) = Logic.dest_equals t;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   583
        val _ = if head' = head then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   584
        val (Const (co, _), args) = strip_comb t_co;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   585
        val (Var (param, _), args') = strip_comb rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   586
        val _ = if args' = args then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   587
      in (param, co) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   588
    fun analyze_cases cases =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   589
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   590
        val co_list = fold (AList.update (op =) o dest_case) cases [];
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   591
      in map (the o AList.lookup (op =) co_list) params end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   592
    fun analyze_let t =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   593
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   594
        val (head' $ arg, Var (param', _) $ arg') = Logic.dest_equals t;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   595
        val _ = if head' = head then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   596
        val _ = if arg' = arg then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   597
        val _ = if [param'] = params then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   598
      in [] end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   599
    fun analyze (cases as [let_case]) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   600
          (analyze_cases cases handle Bind => analyze_let let_case)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   601
      | analyze cases = analyze_cases cases;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   602
  in (case_const, (n, analyze cases)) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   603
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   604
fun case_cert thm = case_certificate thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   605
  handle Bind => error "bad case certificate"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   606
       | TERM _ => error "bad case certificate";
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   607
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   608
fun get_case_scheme thy = Symtab.lookup ((fst o the_cases o the_exec) thy);
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   609
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   610
val undefineds = Symtab.keys o snd o the_cases o the_exec;
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   611
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   612
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   613
(* diagnostic *)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   614
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   615
fun print_codesetup thy =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   616
  let
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   617
    val ctxt = ProofContext.init thy;
24844
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   618
    val exec = the_exec thy;
33006
cda9a931a46b dropped lazy code equations
haftmann
parents: 32966
diff changeset
   619
    fun pretty_eqns (s, (_, eqns)) =
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   620
      (Pretty.block o Pretty.fbreaks) (
33006
cda9a931a46b dropped lazy code equations
haftmann
parents: 32966
diff changeset
   621
        Pretty.str s :: map (Display.pretty_thm ctxt o fst) eqns
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   622
      );
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   623
    fun pretty_dtyp (s, []) =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   624
          Pretty.str s
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   625
      | pretty_dtyp (s, cos) =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   626
          (Pretty.block o Pretty.breaks) (
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   627
            Pretty.str s
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   628
            :: Pretty.str "="
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   629
            :: separate (Pretty.str "|") (map (fn (c, []) => Pretty.str (string_of_const thy c)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   630
                 | (c, tys) =>
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   631
                     (Pretty.block o Pretty.breaks)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   632
                        (Pretty.str (string_of_const thy c)
26947
133905a0c493 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26928
diff changeset
   633
                          :: Pretty.str "of"
133905a0c493 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26928
diff changeset
   634
                          :: map (Pretty.quote o Syntax.pretty_typ_global thy) tys)) cos)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   635
          );
28368
8437fb395294 clarified function transformator interface
haftmann
parents: 28359
diff changeset
   636
    val eqns = the_eqns exec
24423
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   637
      |> Symtab.dest
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   638
      |> (map o apfst) (string_of_const thy)
28695
f7a06d7284c8 explicit history for equations; tuned
haftmann
parents: 28673
diff changeset
   639
      |> (map o apsnd) (snd o fst)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   640
      |> sort (string_ord o pairself fst);
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   641
    val dtyps = the_dtyps exec
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   642
      |> Symtab.dest
28695
f7a06d7284c8 explicit history for equations; tuned
haftmann
parents: 28673
diff changeset
   643
      |> map (fn (dtco, (_, (vs, cos)) :: _) =>
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   644
          (string_of_typ thy (Type (dtco, map TFree vs)), cos))
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   645
      |> sort (string_ord o pairself fst)
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   646
  in
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   647
    (Pretty.writeln o Pretty.chunks) [
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   648
      Pretty.block (
30023
55954f726043 permissive check for pattern discipline in case schemes
haftmann
parents: 29970
diff changeset
   649
        Pretty.str "code equations:"
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   650
        :: Pretty.fbrk
33006
cda9a931a46b dropped lazy code equations
haftmann
parents: 32966
diff changeset
   651
        :: (Pretty.fbreaks o map pretty_eqns) eqns
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   652
      ),
25968
66cfe1d00be0 print postprocessor equations
haftmann
parents: 25597
diff changeset
   653
      Pretty.block (
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   654
        Pretty.str "datatypes:"
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   655
        :: Pretty.fbrk
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   656
        :: (Pretty.fbreaks o map pretty_dtyp) dtyps
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   657
      )
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   658
    ]
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   659
  end;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   660
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   661
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   662
(** declaring executable ingredients **)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   663
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   664
(* constant signatures *)
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   665
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   666
fun add_type tyco thy =
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   667
  case Symtab.lookup ((snd o #types o Type.rep_tsig o Sign.tsig_of) thy) tyco
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   668
   of SOME (Type.Abbreviation (vs, _, _)) =>
34173
458ced35abb8 reduced code generator cache to the baremost minimum
haftmann
parents: 33977
diff changeset
   669
          (map_exec_purge o map_signatures o apfst)
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   670
            (Symtab.update (tyco, length vs)) thy
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   671
    | _ => error ("No such type abbreviation: " ^ quote tyco);
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   672
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   673
fun add_type_cmd s thy = add_type (Sign.intern_type thy s) thy;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   674
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   675
fun gen_add_signature prep_const prep_signature (raw_c, raw_ty) thy =
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   676
  let
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   677
    val c = prep_const thy raw_c;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   678
    val ty = prep_signature thy raw_ty;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   679
    val ty' = expand_signature thy ty;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   680
    val ty'' = Sign.the_const_type thy c;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   681
    val _ = if typ_equiv (ty', ty'') then () else
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   682
      error ("Illegal constant signature: " ^ Syntax.string_of_typ_global thy ty);
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   683
  in
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   684
    thy
34173
458ced35abb8 reduced code generator cache to the baremost minimum
haftmann
parents: 33977
diff changeset
   685
    |> (map_exec_purge o map_signatures o apsnd) (Symtab.update (c, ty))
33940
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   686
  end;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   687
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   688
val add_signature = gen_add_signature (K I) cert_signature;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   689
val add_signature_cmd = gen_add_signature read_const read_signature;
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   690
317933ce3712 crude support for type aliasses and corresponding constant signatures
haftmann
parents: 33756
diff changeset
   691
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   692
(* code equations *)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   693
33075
f654dafa021e close thm derivations explicitly
haftmann
parents: 33006
diff changeset
   694
fun gen_add_eqn default (thm, proper) thy =
f654dafa021e close thm derivations explicitly
haftmann
parents: 33006
diff changeset
   695
  let
f654dafa021e close thm derivations explicitly
haftmann
parents: 33006
diff changeset
   696
    val thm' = Thm.close_derivation thm;
f654dafa021e close thm derivations explicitly
haftmann
parents: 33006
diff changeset
   697
    val c = const_eqn thy thm';
f654dafa021e close thm derivations explicitly
haftmann
parents: 33006
diff changeset
   698
  in change_eqns false c (add_thm thy default (thm', proper)) thy end;
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   699
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   700
fun add_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   701
  gen_add_eqn false (mk_eqn thy (thm, true)) thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   702
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   703
fun add_warning_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   704
  case mk_eqn_warning thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   705
   of SOME eqn => gen_add_eqn false eqn thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   706
    | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   707
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   708
fun add_default_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   709
  case mk_eqn_liberal thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   710
   of SOME eqn => gen_add_eqn true eqn thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   711
    | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   712
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   713
fun add_nbe_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   714
  gen_add_eqn false (mk_eqn thy (thm, false)) thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   715
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   716
val add_default_eqn_attribute = Thm.declaration_attribute
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   717
  (fn thm => Context.mapping (add_default_eqn thm) I);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   718
val add_default_eqn_attrib = Attrib.internal (K add_default_eqn_attribute);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   719
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   720
fun del_eqn thm thy = case mk_eqn_liberal thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   721
 of SOME (thm, _) => change_eqns true (const_eqn thy thm) (del_thm thm) thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   722
  | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   723
34244
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   724
fun del_eqns c = change_eqns true c (K (false, []));
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   725
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   726
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   727
(* cases *)
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   728
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   729
fun add_case thm thy =
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   730
  let
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   731
    val (c, (k, case_pats)) = case_cert thm;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   732
    val _ = case filter_out (is_constr thy) case_pats
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   733
     of [] => ()
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   734
      | cs => error ("Non-constructor(s) in case certificate: " ^ commas (map quote cs));
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   735
    val entry = (1 + Int.max (1, length case_pats), (k, case_pats))
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   736
  in (map_exec_purge o map_cases o apfst) (Symtab.update (c, entry)) thy end;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   737
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   738
fun add_undefined c thy =
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   739
  (map_exec_purge o map_cases o apsnd) (Symtab.update (c, ())) thy;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   740
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   741
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   742
(* datatypes *)
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   743
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   744
structure Type_Interpretation =
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   745
  Interpretation(type T = string * serial val eq = eq_snd (op =) : T * T -> bool);
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   746
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   747
fun add_datatype raw_cs thy =
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   748
  let
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   749
    val cs = map (fn c_ty as (_, ty) => (AxClass.unoverload_const thy c_ty, ty)) raw_cs;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   750
    val (tyco, vs_cos) = constrset_of_consts thy cs;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   751
    val old_cs = (map fst o snd o get_datatype thy) tyco;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   752
    fun drop_outdated_cases cases = fold Symtab.delete_safe
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   753
      (Symtab.fold (fn (c, (_, (_, cos))) =>
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   754
        if exists (member (op =) old_cs) cos
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   755
          then insert (op =) c else I) cases []) cases;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   756
  in
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   757
    thy
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   758
    |> fold (del_eqns o fst) cs
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   759
    |> map_exec_purge
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   760
        ((map_dtyps o Symtab.map_default (tyco, [])) (cons (serial (), vs_cos))
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   761
        #> (map_cases o apfst) drop_outdated_cases)
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   762
    |> Type_Interpretation.data (tyco, serial ())
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   763
  end;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   764
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   765
fun type_interpretation f =  Type_Interpretation.interpretation
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   766
  (fn (tyco, _) => fn thy => f (tyco, get_datatype thy tyco) thy);
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   767
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   768
fun add_datatype_cmd raw_cs thy =
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   769
  let
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   770
    val cs = map (read_bare_const thy) raw_cs;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   771
  in add_datatype cs thy end;
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   772
03f8dcab55f3 code cache without copy; tuned
haftmann
parents: 34184
diff changeset
   773
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   774
(* c.f. src/HOL/Tools/recfun_codegen.ML *)
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   775
33522
737589bb9bb8 adapted Theory_Data;
wenzelm
parents: 33519
diff changeset
   776
structure Code_Target_Attr = Theory_Data
737589bb9bb8 adapted Theory_Data;
wenzelm
parents: 33519
diff changeset
   777
(
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   778
  type T = (string -> thm -> theory -> theory) option;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   779
  val empty = NONE;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   780
  val extend = I;
33522
737589bb9bb8 adapted Theory_Data;
wenzelm
parents: 33519
diff changeset
   781
  fun merge (f1, f2) = if is_some f1 then f1 else f2;
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   782
);
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   783
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   784
fun set_code_target_attr f = Code_Target_Attr.map (K (SOME f));
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   785
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   786
fun code_target_attr prefix thm thy =
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   787
  let
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   788
    val attr = the_default ((K o K) I) (Code_Target_Attr.get thy);
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   789
  in thy |> add_warning_eqn thm |> attr prefix thm end;
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   790
(* setup *)
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   791
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   792
val _ = Context.>> (Context.map_theory
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   793
  (let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   794
    fun mk_attribute f = Thm.declaration_attribute (fn thm => Context.mapping (f thm) I);
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   795
    val code_attribute_parser =
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   796
      Args.del |-- Scan.succeed (mk_attribute del_eqn)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   797
      || Args.$$$ "nbe" |-- Scan.succeed (mk_attribute add_nbe_eqn)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   798
      || (Args.$$$ "target" |-- Args.colon |-- Args.name >>
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   799
           (mk_attribute o code_target_attr))
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   800
      || Scan.succeed (mk_attribute add_warning_eqn);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   801
  in
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   802
    Type_Interpretation.init
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   803
    #> Attrib.setup (Binding.name "code") (Scan.lift code_attribute_parser)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   804
        "declare theorems for code generation"
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   805
  end));
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   806
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   807
end; (*struct*)
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   808
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   809
32661
f4d179d91af2 experimenting to add some useful interface for definitions
bulwahn
parents: 32640
diff changeset
   810
(** type-safe interfaces for data dependent on executable code **)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   811
34173
458ced35abb8 reduced code generator cache to the baremost minimum
haftmann
parents: 33977
diff changeset
   812
functor Code_Data(Data: CODE_DATA_ARGS): CODE_DATA =
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   813
struct
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   814
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   815
type T = Data.T;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   816
exception Data of T;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   817
fun dest (Data x) = x
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   818
34173
458ced35abb8 reduced code generator cache to the baremost minimum
haftmann
parents: 33977
diff changeset
   819
val kind = Code.declare_data (Data Data.empty);
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   820
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   821
val data_op = (kind, Data, dest);
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   822
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   823
val change = Code.change_data data_op;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   824
fun change_yield thy = Code.change_yield_data data_op thy;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   825
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   826
end;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   827
28143
e5c6c4aac52c different bookkeeping for code equations
haftmann
parents: 28054
diff changeset
   828
structure Code : CODE = struct open Code; end;