src/Pure/Isar/code.ML
author wenzelm
Tue, 21 Jul 2009 01:03:18 +0200
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child 32131 7913823f14e3
permissions -rw-r--r--
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
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(*  Title:      Pure/Isar/code.ML
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    Author:     Florian Haftmann, TU Muenchen
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Abstract executable code of theory.  Management of data dependent on
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executable code.  Cache assumes non-concurrent processing of a single theory.
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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 args_number: theory -> string -> int
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  val typscheme: theory -> string * typ -> (string * sort) list * typ
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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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  (*constant aliasses*)
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  val add_const_alias: thm -> theory -> theory
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  val triv_classes: theory -> class list
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  val resubst_alias: theory -> string -> string
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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 expand_eta: theory -> int -> thm -> thm
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  val norm_args: theory -> thm list -> thm list 
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  val norm_varnames: theory -> thm list -> thm list
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  (*executable code*)
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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_eqnl: string * (thm * bool) list lazy -> 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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  val purge: theory -> string list -> T -> T
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end;
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signature CODE_DATA =
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  type T
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  val get: theory -> T
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  val change: theory -> (T -> T) -> T
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  val change_yield: theory -> (T -> 'a * T) -> 'a * T
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end;
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signature PRIVATE_CODE =
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  include CODE
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  val declare_data: Object.T -> (theory -> string list -> Object.T -> Object.T)
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    -> serial
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  val get_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> 'a
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  val change_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> ('a -> 'a) -> 'a
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  val change_yield_data: serial * ('a -> Object.T) * (Object.T -> 'a)
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    -> theory -> ('a -> 'b * 'a) -> 'b * 'a
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end;
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structure Code : PRIVATE_CODE =
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struct
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(** auxiliary **)
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(* printing *)
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fun string_of_typ thy = setmp 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 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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fun typscheme thy (c, ty) =
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  let
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    val ty' = Logic.unvarifyT ty;
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  in (map dest_TFree (Sign.const_typargs thy (c, ty')), Type.strip_sorts ty') end;
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(* code equation transformations *)
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fun expand_eta thy k thm =
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  let
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    val (lhs, rhs) = (Logic.dest_equals o Thm.plain_prop_of) thm;
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    val (head, args) = strip_comb lhs;
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    val l = if k = ~1
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      then (length o fst o strip_abs) rhs
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      else Int.max (0, k - length args);
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    val used = Name.make_context (map (fst o fst) (Term.add_vars lhs []));
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    fun get_name _ 0 = pair []
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      | get_name (Abs (v, ty, t)) k =
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          Name.variants [v]
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          ##>> get_name t (k - 1)
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          #>> (fn ([v'], vs') => (v', ty) :: vs')
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      | get_name t k = 
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          let
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            val (tys, _) = (strip_type o fastype_of) t
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          in case tys
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           of [] => raise TERM ("expand_eta", [t])
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            | ty :: _ =>
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                Name.variants [""]
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                #-> (fn [v] => get_name (t $ Var ((v, 0), ty)) (k - 1)
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                #>> (fn vs' => (v, ty) :: vs'))
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          end;
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    val (vs, _) = get_name rhs l used;
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    fun expand (v, ty) thm = Drule.fun_cong_rule thm
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      (Thm.cterm_of thy (Var ((v, 0), ty)));
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  in
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    thm
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    |> fold expand vs
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    |> Conv.fconv_rule Drule.beta_eta_conversion
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  end;
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fun norm_args thy thms =
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  let
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    val num_args_of = length o snd o strip_comb o fst o Logic.dest_equals;
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    val k = fold (curry Int.max o num_args_of o Thm.prop_of) thms 0;
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  in
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    thms
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    |> map (expand_eta thy k)
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    |> map (Conv.fconv_rule Drule.beta_eta_conversion)
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  end;
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fun canonical_tvars thy thm =
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  let
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    val ctyp = Thm.ctyp_of thy;
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    val purify_tvar = unprefix "'" #> Name.desymbolize false #> prefix "'";
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    fun tvars_subst_for thm = (fold_types o fold_atyps)
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      (fn TVar (v_i as (v, _), sort) => let
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            val v' = purify_tvar v
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          in if v = v' then I
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          else insert (op =) (v_i, (v', sort)) end
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        | _ => I) (prop_of thm) [];
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    fun mk_inst (v_i, (v', sort)) (maxidx, acc) =
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      let
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        val ty = TVar (v_i, sort)
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      in
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        (maxidx + 1, (ctyp ty, ctyp (TVar ((v', maxidx), sort))) :: acc)
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      end;
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    val maxidx = Thm.maxidx_of thm + 1;
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    val (_, inst) = fold mk_inst (tvars_subst_for thm) (maxidx + 1, []);
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  in Thm.instantiate (inst, []) thm end;
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fun canonical_vars thy thm =
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  let
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    val cterm = Thm.cterm_of thy;
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    val purify_var = Name.desymbolize false;
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    fun vars_subst_for thm = fold_aterms
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      (fn Var (v_i as (v, _), ty) => let
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            val v' = purify_var v
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          in if v = v' then I
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          else insert (op =) (v_i, (v', ty)) end
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        | _ => I) (prop_of thm) [];
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    fun mk_inst (v_i as (v, i), (v', ty)) (maxidx, acc) =
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      let
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        val t = Var (v_i, ty)
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      in
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        (maxidx + 1, (cterm t, cterm (Var ((v', maxidx), ty))) :: acc)
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      end;
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    val maxidx = Thm.maxidx_of thm + 1;
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    val (_, inst) = fold mk_inst (vars_subst_for thm) (maxidx + 1, []);
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  in Thm.instantiate ([], inst) thm end;
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fun canonical_absvars thm =
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  let
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    val t = Thm.plain_prop_of thm;
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    val purify_var = Name.desymbolize false;
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    val t' = Term.map_abs_vars purify_var t;
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  in Thm.rename_boundvars t t' thm end;
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fun norm_varnames thy thms =
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  let
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    fun burrow_thms f [] = []
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      | burrow_thms f thms =
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          thms
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          |> Conjunction.intr_balanced
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          |> f
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          |> Conjunction.elim_balanced (length thms)
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  in
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    thms
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    |> map (canonical_vars thy)
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    |> map canonical_absvars
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    |> map Drule.zero_var_indexes
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    |> burrow_thms (canonical_tvars thy)
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    |> Drule.zero_var_indexes_list
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  end;
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(** data store **)
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(* code equations *)
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type eqns = bool * (thm * bool) list lazy;
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  (*default flag, theorems with proper flag (perhaps lazy)*)
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fun pretty_lthms ctxt r = case Lazy.peek r
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 of SOME thms => map (Display.pretty_thm ctxt o fst) (Exn.release thms)
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  | NONE => [Pretty.str "[...]"];
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fun certificate thy f r =
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  case Lazy.peek r
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   of SOME thms => (Lazy.value o f thy) (Exn.release thms)
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    | NONE => let
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        val thy_ref = Theory.check_thy thy;
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      in Lazy.lazy (fn () => (f (Theory.deref thy_ref) o Lazy.force) r) end;
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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 curry Library.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, Lazy.map_force (add_drop_redundant thy thm) thms)
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  | add_thm thy true thm (true, thms) = (true, Lazy.map_force (fn thms => thms @ [thm]) thms)
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  | add_thm thy false thm (true, thms) = (false, Lazy.value [thm]);
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fun add_lthms lthms _ = (false, lthms);
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fun del_thm thm = (apsnd o Lazy.map_force) (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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  aliasses: ((string * string) * thm) list * class list,
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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, aliasses), (eqns, (dtyps, cases))) =
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  Spec { history_concluded = history_concluded, aliasses = aliasses,
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    eqns = eqns, dtyps = dtyps, cases = cases };
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fun map_spec f (Spec { history_concluded = history_concluded, aliasses = aliasses, eqns = eqns,
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  dtyps = dtyps, cases = cases }) =
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  make_spec (f ((history_concluded, aliasses), (eqns, (dtyps, cases))));
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fun merge_spec (Spec { history_concluded = _, aliasses = aliasses1, eqns = eqns1,
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    dtyps = dtyps1, cases = (cases1, undefs1) },
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  Spec { history_concluded = _, aliasses = aliasses2, eqns = eqns2,
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    dtyps = dtyps2, cases = (cases2, undefs2) }) =
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  let
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    val aliasses = (Library.merge (eq_snd Thm.eq_thm_prop) (pairself fst (aliasses1, aliasses2)),
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      Library.merge (op =) (pairself snd (aliasses1, aliasses2)));
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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, aliasses), (eqns, (dtyps, cases))) end;
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fun history_concluded (Spec { history_concluded, ... }) = history_concluded;
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fun the_aliasses (Spec { aliasses, ... }) = aliasses;
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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 o apfst;
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val map_aliasses = map_spec o apfst o apsnd;
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val map_eqns = map_spec o apsnd o apfst;
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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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8c1b845ed105 renamed functor TableFun to Table, and GraphFun to Graph;
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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 = {
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  empty: Object.T,
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  purge: theory -> string list -> Object.T -> Object.T
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};
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val kinds = ref (Datatab.empty: kind Datatab.table);
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val kind_keys = ref ([]: serial list);
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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 purge =
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  let
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    val k = serial ();
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    val kind = {empty = empty, purge = purge};
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    val _ = change kinds (Datatab.update (k, kind));
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    val _ = change kind_keys (cons k);
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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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fun invoke_purge_all thy cs =
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  fold (fn k => Datatab.map_entry k
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    (invoke (fn kind => #purge kind thy cs) k)) (! kind_keys);
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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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val empty_data = Datatab.empty : data;
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structure Code_Data = TheoryDataFun
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(
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  type T = spec * data ref;
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  val empty = (make_spec ((false, ([], [])),
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    (Symtab.empty, (Symtab.empty, (Symtab.empty, Symtab.empty)))), ref empty_data);
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  fun copy (spec, data) = (spec, ref (! data));
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  val extend = copy;
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  fun merge pp ((spec1, data1), (spec2, data2)) =
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    (merge_spec (spec1, spec2), ref empty_data);
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);
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fun thy_data f thy = f ((snd o Code_Data.get) thy);
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fun get_ensure_init kind data_ref =
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  case Datatab.lookup (! data_ref) kind
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   of SOME x => x
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    | NONE => let val y = invoke_init kind
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        in (change data_ref (Datatab.update (kind, y)); y) end;
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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 complete_class_params thy cs =
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  fold (fn c => case AxClass.inst_of_param thy c
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   of NONE => insert (op =) c
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    | SOME (c', _) => insert (op =) c' #> insert (op =) c) cs [];
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   405
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fun map_exec_purge touched f thy =
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   407
  Code_Data.map (fn (exec, data) => (f exec, ref (case touched
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   408
   of SOME cs => invoke_purge_all thy (complete_class_params thy cs) (! data)
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    | NONE => empty_data))) thy;
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   410
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val purge_data = (Code_Data.map o apsnd) (K (ref empty_data));
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fun change_eqns delete c f = (map_exec_purge (SOME [c]) o map_eqns
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  o (if delete then Symtab.map_entry c else Symtab.map_default (c, ((false, (true, Lazy.value [])), [])))
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   415
    o apfst) (fn (_, eqns) => (true, f eqns));
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fun del_eqns c = change_eqns true c (K (false, Lazy.value []));
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(* tackling equation history *)
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fun get_eqns thy c =
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  Symtab.lookup ((the_eqns o the_exec) thy) c
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  |> Option.map (Lazy.force o snd o snd o fst)
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  |> these;
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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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   435
  else thy
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   436
    |> (Code_Data.map o apfst)
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   437
        ((map_eqns o Symtab.map) (fn ((changed, current), history) =>
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   438
          ((false, current),
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   439
            if changed then (serial (), current) :: history else history))
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        #> map_history_concluded (K true))
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   441
    |> SOME;
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val _ = Context.>> (Context.map_theory (Code_Data.init
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  #> Theory.at_begin continue_history
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   445
  #> Theory.at_end conclude_history));
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(* access to data dependent on abstract executable code *)
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   450
fun get_data (kind, _, dest) = thy_data (get_ensure_init kind #> dest);
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fun change_data (kind, mk, dest) =
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   453
  let
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   454
    fun chnge data_ref f =
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   455
      let
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   456
        val data = get_ensure_init kind data_ref;
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   457
        val data' = f (dest data);
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      in (change data_ref (Datatab.update (kind, mk data')); data') end;
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   459
  in thy_data chnge end;
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   460
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   461
fun change_yield_data (kind, mk, dest) =
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   462
  let
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   463
    fun chnge data_ref f =
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   464
      let
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   465
        val data = get_ensure_init kind data_ref;
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   466
        val (x, data') = f (dest data);
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   467
      in (x, (change data_ref (Datatab.update (kind, mk data')); data')) end;
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   468
  in thy_data chnge end;
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   469
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end; (*local*)
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   473
(** retrieval interfaces **)
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   474
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   475
(* constant aliasses *)
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   476
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   477
fun resubst_alias thy =
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   478
  let
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   479
    val alias = (fst o the_aliasses o the_exec) thy;
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   480
    val subst_inst_param = Option.map fst o AxClass.inst_of_param thy;
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   481
    fun subst_alias c =
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   482
      get_first (fn ((c', c''), _) => if c = c'' then SOME c' else NONE) alias;
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   483
  in
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   484
    perhaps subst_inst_param
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   485
    #> perhaps subst_alias
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   486
  end;
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   487
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   488
val triv_classes = snd o the_aliasses o the_exec;
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   489
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   490
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   491
(** foundation **)
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   492
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   493
(* constants *)
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   494
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   495
fun args_number thy = length o fst o strip_type o Sign.the_const_type thy;
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   497
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   498
(* datatypes *)
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   499
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   500
fun constrset_of_consts thy cs =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   501
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   502
    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
   503
      then error ("Is a class parameter: " ^ string_of_const thy c) else ()) cs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   504
    fun no_constr (c, ty) = error ("Not a datatype constructor: " ^ string_of_const thy c
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   505
      ^ " :: " ^ string_of_typ thy ty);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   506
    fun last_typ c_ty ty =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   507
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   508
        val frees = OldTerm.typ_tfrees ty;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   509
        val (tyco, vs) = ((apsnd o map) (dest_TFree) o dest_Type o snd o strip_type) ty
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   510
          handle TYPE _ => no_constr c_ty
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   511
        val _ = if has_duplicates (eq_fst (op =)) vs then no_constr c_ty else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   512
        val _ = if length frees <> length vs then no_constr c_ty else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   513
      in (tyco, vs) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   514
    fun ty_sorts (c, ty) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   515
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   516
        val ty_decl = (Logic.unvarifyT o Sign.the_const_type thy) c;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   517
        val (tyco, _) = last_typ (c, ty) ty_decl;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   518
        val (_, vs) = last_typ (c, ty) ty;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   519
      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
   520
    fun add ((tyco', sorts'), c) ((tyco, sorts), cs) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   521
      let
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   522
        val _ = if (tyco' : string) <> tyco
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   523
          then error "Different type constructors in constructor set"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   524
          else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   525
        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
   526
      in ((tyco, sorts), c :: cs) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   527
    fun inst vs' (c, (vs, ty)) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   528
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   529
        val the_v = the o AList.lookup (op =) (vs ~~ vs');
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   530
        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
   531
      in (c, (fst o strip_type) ty') end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   532
    val c' :: cs' = map ty_sorts cs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   533
    val ((tyco, sorts), cs'') = fold add cs' (apsnd single c');
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   534
    val vs = Name.names Name.context Name.aT sorts;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   535
    val cs''' = map (inst vs) cs'';
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   536
  in (tyco, (vs, rev cs''')) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   537
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   538
fun get_datatype thy tyco =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   539
  case these (Symtab.lookup ((the_dtyps o the_exec) thy) tyco)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   540
   of (_, spec) :: _ => spec
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   541
    | [] => Sign.arity_number thy tyco
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   542
        |> Name.invents Name.context Name.aT
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   543
        |> map (rpair [])
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   544
        |> rpair [];
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   545
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   546
fun get_datatype_of_constr thy c =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   547
  case (snd o strip_type o Sign.the_const_type thy) c
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   548
   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
   549
       then SOME tyco else NONE
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   550
    | _ => NONE;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   551
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   552
fun is_constr thy = is_some o get_datatype_of_constr thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   553
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   554
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   555
(* code equations *)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   556
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   557
exception BAD_THM of string;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   558
fun bad_thm msg = raise BAD_THM msg;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   559
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
   560
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
   561
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
   562
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   563
fun is_linear thm =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   564
  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
   565
  in not (has_duplicates (op =) ((fold o fold_aterms)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   566
    (fn Var (v, _) => cons v | _ => I) args [])) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   567
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   568
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
   569
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   570
    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
   571
      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
   572
           | 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
   573
    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
   574
      | 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
   575
          ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   576
      | _ => I) t [];
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   577
    fun tvars_of t = fold_term_types (fn _ =>
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   578
      fold_atyps (fn TVar (v, _) => insert (op =) v
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   579
        | 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
   580
      ("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
   581
    val lhs_vs = vars_of lhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   582
    val rhs_vs = vars_of rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   583
    val lhs_tvs = tvars_of lhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   584
    val rhs_tvs = tvars_of rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   585
    val _ = if null (subtract (op =) lhs_vs rhs_vs)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   586
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   587
      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
   588
        ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   589
    val _ = if null (subtract (op =) lhs_tvs rhs_tvs)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   590
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   591
      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
   592
        ^ 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
   593
    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
   594
    val (c, ty) = case head
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   595
     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
   596
      | _ => 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
   597
    fun check _ (Abs _) = bad_thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   598
          ("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
   599
            ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   600
      | check 0 (Var _) = ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   601
      | check _ (Var _) = bad_thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   602
          ("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
   603
            ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   604
      | check n (t1 $ t2) = (check (n+1) t1; check 0 t2)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   605
      | check n (Const (c_ty as (c, ty))) = if n = (length o fst o strip_type) ty
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   606
          then if not proper orelse is_constr_pat (AxClass.unoverload_const thy c_ty)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   607
            then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   608
            else bad_thm (quote c ^ " is not a constructor, 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
   609
              ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   610
          else bad_thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   611
            ("Partially applied constant " ^ quote c ^ " 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
   612
               ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   613
    val _ = map (check 0) args;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   614
    val _ = if not proper orelse is_linear thm then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   615
      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
   616
        ^ Display.string_of_thm_global thy thm);
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   617
    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
   618
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   619
      else bad_thm ("Polymorphic 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
   620
        ^ Display.string_of_thm_global thy thm)
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   621
    val _ = if not (is_constr thy c)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   622
      then ()
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   623
      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
   624
        ^ Display.string_of_thm_global thy thm)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   625
    val ty_decl = Sign.the_const_type thy c;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   626
    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
   627
      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
   628
           ^ "\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
   629
           ^ Display.string_of_thm_global thy thm
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   630
           ^ "\nis incompatible with declared function type\n"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   631
           ^ string_of_typ thy ty_decl)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   632
  in (thm, proper) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   633
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   634
fun assert_eqn thy = error_thm (gen_assert_eqn thy (is_constr thy));
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   635
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   636
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
   637
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   638
fun mk_eqn thy = error_thm (gen_assert_eqn thy (K true)) o
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   639
  apfst (meta_rewrite thy);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   640
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   641
fun mk_eqn_warning thy = Option.map (fn (thm, _) => (thm, is_linear thm))
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   642
  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
   643
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   644
fun mk_eqn_liberal thy = Option.map (fn (thm, _) => (thm, is_linear thm))
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   645
  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
   646
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   647
(*those following are permissive wrt. to overloaded constants!*)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   648
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   649
fun const_typ_eqn thy thm =
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   650
  let
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   651
    val (c, ty) = (dest_Const o fst o 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
   652
    val c' = AxClass.unoverload_const thy (c, ty);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   653
  in (c', ty) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   654
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   655
fun typscheme_eqn thy = typscheme thy o const_typ_eqn thy;
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   656
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
   657
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   658
fun assert_eqns_const thy c eqns =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   659
  let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   660
    fun cert (eqn as (thm, _)) = if c = const_eqn thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   661
      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
   662
        ^ string_of_const thy c ^ "\n" ^ Display.string_of_thm_global thy thm)
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   663
  in map (cert o assert_eqn thy) eqns end;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   664
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   665
fun common_typ_eqns thy [] = []
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   666
  | common_typ_eqns thy [thm] = [thm]
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   667
  | common_typ_eqns thy (thms as thm :: _) = (*FIXME is too general*)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   668
      let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   669
        fun incr_thm thm max =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   670
          let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   671
            val thm' = incr_indexes max thm;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   672
            val max' = Thm.maxidx_of thm' + 1;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   673
          in (thm', max') end;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   674
        val (thms', maxidx) = fold_map incr_thm thms 0;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   675
        val ty1 :: tys = map (snd o const_typ_eqn thy) thms';
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   676
        fun unify ty env = Sign.typ_unify thy (ty1, ty) env
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   677
          handle Type.TUNIFY =>
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   678
            error ("Type unificaton failed, while unifying code equations\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
   679
            ^ (cat_lines o map (Display.string_of_thm_global thy)) thms
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   680
            ^ "\nwith types\n"
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   681
            ^ (cat_lines o map (string_of_typ thy)) (ty1 :: tys));
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   682
        val (env, _) = fold unify tys (Vartab.empty, maxidx)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   683
        val instT = Vartab.fold (fn (x_i, (sort, ty)) =>
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   684
          cons (Thm.ctyp_of thy (TVar (x_i, sort)), Thm.ctyp_of thy ty)) env [];
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   685
      in map (Thm.instantiate (instT, [])) thms' end;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   686
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   687
fun these_eqns thy c =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   688
  get_eqns thy c
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   689
  |> (map o apfst) (Thm.transfer thy)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   690
  |> burrow_fst (common_typ_eqns thy);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   691
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   692
fun all_eqns thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   693
  Symtab.dest ((the_eqns o the_exec) thy)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   694
  |> maps (Lazy.force o snd o snd o fst o snd);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   695
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   696
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   697
(* cases *)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   698
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   699
fun case_certificate thm =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   700
  let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   701
    val ((head, raw_case_expr), cases) = (apfst Logic.dest_equals
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   702
      o apsnd Logic.dest_conjunctions o Logic.dest_implies o Thm.prop_of) thm;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   703
    val _ = case head of Free _ => true
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   704
      | Var _ => true
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   705
      | _ => raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   706
    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
   707
    val (Const (case_const, _), raw_params) = strip_comb case_expr;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   708
    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
   709
    val _ = if n = ~1 then raise TERM ("case_cert", []) else ();
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   710
    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
   711
    fun dest_case t =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   712
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   713
        val (head' $ t_co, rhs) = Logic.dest_equals t;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   714
        val _ = if head' = head then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   715
        val (Const (co, _), args) = strip_comb t_co;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   716
        val (Var (param, _), args') = strip_comb rhs;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   717
        val _ = if args' = args then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   718
      in (param, co) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   719
    fun analyze_cases cases =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   720
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   721
        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
   722
      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
   723
    fun analyze_let t =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   724
      let
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   725
        val (head' $ arg, Var (param', _) $ arg') = Logic.dest_equals t;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   726
        val _ = if head' = head then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   727
        val _ = if arg' = arg then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   728
        val _ = if [param'] = params then () else raise TERM ("case_cert", []);
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   729
      in [] end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   730
    fun analyze (cases as [let_case]) =
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   731
          (analyze_cases cases handle Bind => analyze_let let_case)
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   732
      | analyze cases = analyze_cases cases;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   733
  in (case_const, (n, analyze cases)) end;
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   734
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   735
fun case_cert thm = case_certificate thm
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   736
  handle Bind => error "bad case certificate"
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   737
       | TERM _ => error "bad case certificate";
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   738
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   739
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
   740
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   741
val undefineds = Symtab.keys o snd o the_cases o the_exec;
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   742
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   743
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   744
(* diagnostic *)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   745
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   746
fun print_codesetup thy =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   747
  let
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   748
    val ctxt = ProofContext.init thy;
24844
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   749
    val exec = the_exec thy;
28368
8437fb395294 clarified function transformator interface
haftmann
parents: 28359
diff changeset
   750
    fun pretty_eqn (s, (_, lthms)) =
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   751
      (Pretty.block o Pretty.fbreaks) (
28143
e5c6c4aac52c different bookkeeping for code equations
haftmann
parents: 28054
diff changeset
   752
        Pretty.str s :: pretty_lthms ctxt lthms
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   753
      );
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   754
    fun pretty_dtyp (s, []) =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   755
          Pretty.str s
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   756
      | pretty_dtyp (s, cos) =
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   757
          (Pretty.block o Pretty.breaks) (
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   758
            Pretty.str s
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   759
            :: Pretty.str "="
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   760
            :: 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
   761
                 | (c, tys) =>
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   762
                     (Pretty.block o Pretty.breaks)
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   763
                        (Pretty.str (string_of_const thy c)
26947
133905a0c493 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26928
diff changeset
   764
                          :: Pretty.str "of"
133905a0c493 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26928
diff changeset
   765
                          :: map (Pretty.quote o Syntax.pretty_typ_global thy) tys)) cos)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   766
          );
28368
8437fb395294 clarified function transformator interface
haftmann
parents: 28359
diff changeset
   767
    val eqns = the_eqns exec
24423
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   768
      |> Symtab.dest
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   769
      |> (map o apfst) (string_of_const thy)
28695
f7a06d7284c8 explicit history for equations; tuned
haftmann
parents: 28673
diff changeset
   770
      |> (map o apsnd) (snd o fst)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   771
      |> sort (string_ord o pairself fst);
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   772
    val dtyps = the_dtyps exec
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   773
      |> Symtab.dest
28695
f7a06d7284c8 explicit history for equations; tuned
haftmann
parents: 28673
diff changeset
   774
      |> map (fn (dtco, (_, (vs, cos)) :: _) =>
31957
a9742afd403e tuned interface of structure Code
haftmann
parents: 31890
diff changeset
   775
          (string_of_typ thy (Type (dtco, map TFree vs)), cos))
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   776
      |> sort (string_ord o pairself fst)
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   777
  in
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   778
    (Pretty.writeln o Pretty.chunks) [
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   779
      Pretty.block (
30023
55954f726043 permissive check for pattern discipline in case schemes
haftmann
parents: 29970
diff changeset
   780
        Pretty.str "code equations:"
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   781
        :: Pretty.fbrk
28368
8437fb395294 clarified function transformator interface
haftmann
parents: 28359
diff changeset
   782
        :: (Pretty.fbreaks o map pretty_eqn) eqns
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   783
      ),
25968
66cfe1d00be0 print postprocessor equations
haftmann
parents: 25597
diff changeset
   784
      Pretty.block (
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   785
        Pretty.str "datatypes:"
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   786
        :: Pretty.fbrk
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   787
        :: (Pretty.fbreaks o map pretty_dtyp) dtyps
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   788
      )
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   789
    ]
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   790
  end;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   791
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   792
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   793
(** declaring executable ingredients **)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   794
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   795
(* constant aliasses *)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   796
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   797
fun add_const_alias thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   798
  let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   799
    val (ofclass, eqn) = case try Logic.dest_equals (Thm.prop_of thm)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   800
     of SOME ofclass_eq => ofclass_eq
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
   801
      | _ => error ("Bad certificate: " ^ Display.string_of_thm_global thy thm);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   802
    val (T, class) = case try Logic.dest_of_class ofclass
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   803
     of SOME T_class => T_class
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
   804
      | _ => error ("Bad certificate: " ^ Display.string_of_thm_global thy thm);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   805
    val tvar = case try Term.dest_TVar T
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   806
     of SOME tvar => tvar
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
   807
      | _ => error ("Bad type: " ^ Display.string_of_thm_global thy thm);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   808
    val _ = if Term.add_tvars eqn [] = [tvar] then ()
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
   809
      else error ("Inconsistent type: " ^ Display.string_of_thm_global thy thm);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   810
    val lhs_rhs = case try Logic.dest_equals eqn
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   811
     of SOME lhs_rhs => lhs_rhs
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   812
      | _ => error ("Not an equation: " ^ Syntax.string_of_term_global thy eqn);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   813
    val c_c' = case try (pairself (check_const thy)) lhs_rhs
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   814
     of SOME c_c' => c_c'
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   815
      | _ => error ("Not an equation with two constants: "
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   816
          ^ Syntax.string_of_term_global thy eqn);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   817
    val _ = if the_list (AxClass.class_of_param thy (snd c_c')) = [class] then ()
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
   818
      else error ("Inconsistent class: " ^ Display.string_of_thm_global thy thm);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   819
  in thy |>
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   820
    (map_exec_purge NONE o map_aliasses) (fn (alias, classes) =>
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   821
      ((c_c', thm) :: alias, insert (op =) class classes))
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   822
  end;
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   823
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   824
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   825
(* datatypes *)
31090
3be41b271023 clarified matter of "proper" flag in code equations
haftmann
parents: 31088
diff changeset
   826
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   827
structure Type_Interpretation = InterpretationFun(type T = string * serial val eq = eq_snd (op =) : T * T -> bool);
25462
dad0291cb76a rudimentary instantiation target
haftmann
parents: 25312
diff changeset
   828
24423
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   829
fun add_datatype raw_cs thy =
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   830
  let
25597
34860182b250 moved instance parameter management from class.ML to axclass.ML
haftmann
parents: 25501
diff changeset
   831
    val cs = map (fn c_ty as (_, ty) => (AxClass.unoverload_const thy c_ty, ty)) raw_cs;
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   832
    val (tyco, vs_cos) = constrset_of_consts thy cs;
30076
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   833
    val old_cs = (map fst o snd o get_datatype thy) tyco;
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   834
    fun drop_outdated_cases cases = fold Symtab.delete_safe
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   835
      (Symtab.fold (fn (c, (_, (_, cos))) =>
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   836
        if exists (member (op =) old_cs) cos
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   837
          then insert (op =) c else I) cases []) cases;
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   838
  in
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   839
    thy
31091
8316d22f10f5 corrected deletetion of code equations for constructors
haftmann
parents: 31090
diff changeset
   840
    |> fold (del_eqns o fst) cs
28703
aef727ef30e5 cleanup code default attribute
haftmann
parents: 28695
diff changeset
   841
    |> map_exec_purge NONE
28695
f7a06d7284c8 explicit history for equations; tuned
haftmann
parents: 28673
diff changeset
   842
        ((map_dtyps o Symtab.map_default (tyco, [])) (cons (serial (), vs_cos))
30076
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   843
        #> (map_cases o apfst) drop_outdated_cases)
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   844
    |> Type_Interpretation.data (tyco, serial ())
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   845
  end;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   846
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   847
fun type_interpretation f =  Type_Interpretation.interpretation
25485
33840a854e63 tuned interfaces of class module
haftmann
parents: 25462
diff changeset
   848
  (fn (tyco, _) => fn thy => f (tyco, get_datatype thy tyco) thy);
33840a854e63 tuned interfaces of class module
haftmann
parents: 25462
diff changeset
   849
24423
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   850
fun add_datatype_cmd raw_cs thy =
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   851
  let
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   852
    val cs = map (read_bare_const thy) raw_cs;
24423
ae9cd0e92423 overloaded definitions accompanied by explicit constants
haftmann
parents: 24283
diff changeset
   853
  in add_datatype cs thy end;
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   854
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   855
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   856
(* code equations *)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   857
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   858
fun gen_add_eqn default (eqn as (thm, _)) thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   859
  let val c = const_eqn thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   860
  in change_eqns false c (add_thm thy default eqn) thy end;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   861
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   862
fun add_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   863
  gen_add_eqn false (mk_eqn thy (thm, true)) thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   864
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   865
fun add_warning_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   866
  case mk_eqn_warning thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   867
   of SOME eqn => gen_add_eqn false eqn thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   868
    | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   869
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   870
fun add_default_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   871
  case mk_eqn_liberal thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   872
   of SOME eqn => gen_add_eqn true eqn thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   873
    | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   874
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   875
fun add_nbe_eqn thm thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   876
  gen_add_eqn false (mk_eqn thy (thm, false)) thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   877
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   878
fun add_eqnl (c, lthms) thy =
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   879
  let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   880
    val lthms' = certificate thy (fn thy => assert_eqns_const thy c) lthms;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   881
  in change_eqns false c (add_lthms lthms') thy end;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   882
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   883
val add_default_eqn_attribute = Thm.declaration_attribute
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   884
  (fn thm => Context.mapping (add_default_eqn thm) I);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   885
val add_default_eqn_attrib = Attrib.internal (K add_default_eqn_attribute);
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   886
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   887
fun del_eqn thm thy = case mk_eqn_liberal thy thm
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   888
 of SOME (thm, _) => change_eqns true (const_eqn thy thm) (del_thm thm) thy
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   889
  | NONE => thy;
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   890
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   891
(* c.f. src/HOL/Tools/recfun_codegen.ML *)
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   892
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   893
structure Code_Target_Attr = TheoryDataFun (
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   894
  type T = (string -> thm -> theory -> theory) option;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   895
  val empty = NONE;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   896
  val copy = I;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   897
  val extend = I;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   898
  fun merge _ (NONE, f2) = f2
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   899
    | merge _ (f1, _) = f1;
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   900
);
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   901
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   902
fun set_code_target_attr f = Code_Target_Attr.map (K (SOME f));
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   903
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   904
fun code_target_attr prefix thm thy =
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   905
  let
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   906
    val attr = the_default ((K o K) I) (Code_Target_Attr.get thy);
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   907
  in thy |> add_warning_eqn thm |> attr prefix thm end;
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   908
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   909
(* setup *)
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   910
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   911
val _ = Context.>> (Context.map_theory
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   912
  (let
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   913
    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
   914
    val code_attribute_parser =
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   915
      Args.del |-- Scan.succeed (mk_attribute del_eqn)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   916
      || Args.$$$ "nbe" |-- Scan.succeed (mk_attribute add_nbe_eqn)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   917
      || (Args.$$$ "target" |-- Args.colon |-- Args.name >>
32070
c670a31c964c clarified code
haftmann
parents: 31998
diff changeset
   918
           (mk_attribute o code_target_attr))
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   919
      || Scan.succeed (mk_attribute add_warning_eqn);
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   920
  in
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   921
    Type_Interpretation.init
31998
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   922
    #> Attrib.setup (Binding.name "code") (Scan.lift code_attribute_parser)
2c7a24f74db9 code attributes use common underscore convention
haftmann
parents: 31971
diff changeset
   923
        "declare theorems for code generation"
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   924
  end));
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   925
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   926
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   927
(* cases *)
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   928
24844
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   929
fun add_case thm thy =
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   930
  let
31156
90fed3d4430f merged module code_unit.ML into code.ML
haftmann
parents: 31152
diff changeset
   931
    val (c, (k, case_pats)) = case_cert thm;
31088
36a011423fcc clarified terminilogy concerning nbe equations
haftmann
parents: 30928
diff changeset
   932
    val _ = case filter_out (is_constr thy) case_pats
30076
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   933
     of [] => ()
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   934
      | cs => error ("Non-constructor(s) in case certificate: " ^ commas (map quote cs));
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   935
    val entry = (1 + Int.max (1, length case_pats), (k, case_pats))
f3043dafef5f improved treatment of case certificates
haftmann
parents: 30060
diff changeset
   936
  in (map_exec_purge (SOME [c]) o map_cases o apfst) (Symtab.update (c, entry)) thy end;
24844
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   937
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   938
fun add_undefined c thy =
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   939
  (map_exec_purge (SOME [c]) o map_cases o apsnd) (Symtab.update (c, ())) thy;
98c006a30218 certificates for code generator case expressions
haftmann
parents: 24837
diff changeset
   940
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   941
end; (*struct*)
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   942
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   943
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   944
(** type-safe interfaces for data depedent on executable code **)
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   945
31962
baa8dce5bc45 tuned structure Code internally
haftmann
parents: 31957
diff changeset
   946
functor Code_Data_Fun(Data: CODE_DATA_ARGS): CODE_DATA =
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   947
struct
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   948
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   949
type T = Data.T;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   950
exception Data of T;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   951
fun dest (Data x) = x
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   952
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   953
val kind = Code.declare_data (Data Data.empty)
27609
b23c9ad0fe7d tuned code theorem bookkeeping
haftmann
parents: 27582
diff changeset
   954
  (fn thy => fn cs => fn Data x => Data (Data.purge thy cs x));
24219
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   955
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   956
val data_op = (kind, Data, dest);
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   957
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   958
val get = Code.get_data data_op;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   959
val change = Code.change_data data_op;
e558fe311376 new structure for code generator modules
haftmann
parents:
diff changeset
   960
fun change_yield thy = Code.change_yield_data data_op thy;
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   961
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   962
end;
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   963
28143
e5c6c4aac52c different bookkeeping for code equations
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parents: 28054
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   964
structure Code : CODE = struct open Code; end;