src/Pure/Proof/extraction.ML
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(*  Title:      Pure/Proof/extraction.ML
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    Author:     Stefan Berghofer, TU Muenchen
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Extraction of programs from proofs.
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*)
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signature EXTRACTION =
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sig
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  val set_preprocessor : (theory -> Proofterm.proof -> Proofterm.proof) -> theory -> theory
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  val add_realizes_eqns_i : ((term * term) list * (term * term)) list -> theory -> theory
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  val add_realizes_eqns : string list -> theory -> theory
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  val add_typeof_eqns_i : ((term * term) list * (term * term)) list -> theory -> theory
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  val add_typeof_eqns : string list -> theory -> theory
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  val add_realizers_i : (string * (string list * term * Proofterm.proof)) list
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    -> theory -> theory
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  val add_realizers : (thm * (string list * string * string)) list
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    -> theory -> theory
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  val add_expand_thms : thm list -> theory -> theory
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  val add_types : (xstring * ((term -> term option) list *
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    (term -> typ -> term -> typ -> term) option)) list -> theory -> theory
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  val extract : (thm * string list) list -> theory -> theory
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  val nullT : typ
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  val nullt : term
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  val mk_typ : typ -> term
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  val etype_of : theory -> string list -> typ list -> term -> typ
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  val realizes_of: theory -> string list -> term -> term -> term
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end;
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structure Extraction : EXTRACTION =
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struct
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open Proofterm;
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(**** tools ****)
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fun add_syntax thy =
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  thy
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  |> Theory.copy
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  |> Sign.root_path
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  |> Sign.add_types [(Binding.name "Type", 0, NoSyn), (Binding.name "Null", 0, NoSyn)]
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  |> Sign.add_consts
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      [(Binding.name "typeof", "'b::{} => Type", NoSyn),
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       (Binding.name "Type", "'a::{} itself => Type", NoSyn),
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       (Binding.name "Null", "Null", NoSyn),
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       (Binding.name "realizes", "'a::{} => 'b::{} => 'b", NoSyn)];
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val nullT = Type ("Null", []);
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val nullt = Const ("Null", nullT);
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fun mk_typ T =
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  Const ("Type", Term.itselfT T --> Type ("Type", [])) $ Logic.mk_type T;
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fun typeof_proc defaultS vs (Const ("typeof", _) $ u) =
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      SOME (mk_typ (case strip_comb u of
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          (Var ((a, i), _), _) =>
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            if member (op =) vs a then TFree ("'" ^ a ^ ":" ^ string_of_int i, defaultS)
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            else nullT
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        | (Free (a, _), _) =>
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            if member (op =) vs a then TFree ("'" ^ a, defaultS) else nullT
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        | _ => nullT))
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  | typeof_proc _ _ _ = NONE;
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fun rlz_proc (Const ("realizes", Type (_, [Type ("Null", []), _])) $ r $ t) = SOME t
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  | rlz_proc (Const ("realizes", Type (_, [T, _])) $ r $ t) =
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      (case strip_comb t of
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         (Var (ixn, U), ts) => SOME (list_comb (Var (ixn, T --> U), r :: ts))
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       | (Free (s, U), ts) => SOME (list_comb (Free (s, T --> U), r :: ts))
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       | _ => NONE)
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  | rlz_proc _ = NONE;
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val unpack_ixn = apfst implode o apsnd (fst o read_int o tl) o
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  take_prefix (fn s => s <> ":") o explode;
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type rules =
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  {next: int, rs: ((term * term) list * (term * term)) list,
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   net: (int * ((term * term) list * (term * term))) Net.net};
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val empty_rules : rules = {next = 0, rs = [], net = Net.empty};
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fun add_rule (r as (_, (lhs, _)), {next, rs, net} : rules) =
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  {next = next - 1, rs = r :: rs, net = Net.insert_term (K false)
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     (Envir.eta_contract lhs, (next, r)) net};
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fun merge_rules
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  ({next, rs = rs1, net} : rules) ({next = next2, rs = rs2, ...} : rules) =
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  List.foldr add_rule {next = next, rs = rs1, net = net} (subtract (op =) rs1 rs2);
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fun condrew thy rules procs =
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  let
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    fun rew tm =
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      Pattern.rewrite_term thy [] (condrew' :: procs) tm
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    and condrew' tm =
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      let
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        val cache = ref ([] : (term * term) list);
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        fun lookup f x = (case AList.lookup (op =) (!cache) x of
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            NONE =>
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              let val y = f x
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              in (cache := (x, y) :: !cache; y) end
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          | SOME y => y);
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      in
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        get_first (fn (_, (prems, (tm1, tm2))) =>
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        let
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          fun ren t = the_default t (Term.rename_abs tm1 tm t);
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          val inc = Logic.incr_indexes ([], maxidx_of_term tm + 1);
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          val env as (Tenv, tenv) = Pattern.match thy (inc tm1, tm) (Vartab.empty, Vartab.empty);
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          val prems' = map (pairself (Envir.subst_vars env o inc o ren)) prems;
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          val env' = Envir.Envir
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            {maxidx = fold (fn (t, u) => Term.maxidx_term t #> Term.maxidx_term u) prems' ~1,
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             tenv = tenv, tyenv = Tenv};
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          val env'' = fold (Pattern.unify thy o pairself (lookup rew)) prems' env';
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        in SOME (Envir.norm_term env'' (inc (ren tm2)))
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        end handle Pattern.MATCH => NONE | Pattern.Unif => NONE)
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          (sort (int_ord o pairself fst)
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            (Net.match_term rules (Envir.eta_contract tm)))
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      end;
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  in rew end;
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val chtype = change_type o SOME;
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fun extr_name s vs = Long_Name.append "extr" (space_implode "_" (s :: vs));
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fun corr_name s vs = extr_name s vs ^ "_correctness";
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fun msg d s = priority (Symbol.spaces d ^ s);
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fun vars_of t = map Var (rev (Term.add_vars t []));
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fun frees_of t = map Free (rev (Term.add_frees t []));
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fun vfs_of t = vars_of t @ frees_of t;
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fun forall_intr_prf (t, prf) =
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  let val (a, T) = (case t of Var ((a, _), T) => (a, T) | Free p => p)
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  in Abst (a, SOME T, prf_abstract_over t prf) end;
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val mkabs = List.foldr (fn (v, t) => Abs ("x", fastype_of v, abstract_over (v, t)));
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fun strip_abs 0 t = t
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  | strip_abs n (Abs (_, _, t)) = strip_abs (n-1) t
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  | strip_abs _ _ = error "strip_abs: not an abstraction";
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fun prf_subst_TVars tye =
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  map_proof_terms (subst_TVars tye) (typ_subst_TVars tye);
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fun relevant_vars types prop = List.foldr (fn
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      (Var ((a, i), T), vs) => (case strip_type T of
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        (_, Type (s, _)) => if member (op =) types s then a :: vs else vs
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      | _ => vs)
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    | (_, vs) => vs) [] (vars_of prop);
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fun tname_of (Type (s, _)) = s
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  | tname_of _ = "";
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fun get_var_type t =
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  let
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    val vs = Term.add_vars t [];
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    val fs = Term.add_frees t [];
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  in fn 
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      Var (ixn, _) => (case AList.lookup (op =) vs ixn of
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          NONE => error "get_var_type: no such variable in term"
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        | SOME T => Var (ixn, T))
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    | Free (s, _) => (case AList.lookup (op =) fs s of
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          NONE => error "get_var_type: no such variable in term"
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        | SOME T => Free (s, T))
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    | _ => error "get_var_type: not a variable"
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  end;
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(**** theory data ****)
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(* theory data *)
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structure ExtractionData = TheoryDataFun
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(
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  type T =
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    {realizes_eqns : rules,
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     typeof_eqns : rules,
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     types : (string * ((term -> term option) list *
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       (term -> typ -> term -> typ -> term) option)) list,
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     realizers : (string list * (term * proof)) list Symtab.table,
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     defs : thm list,
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     expand : (string * term) list,
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     prep : (theory -> proof -> proof) option}
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  val empty =
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    {realizes_eqns = empty_rules,
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     typeof_eqns = empty_rules,
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     types = [],
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     realizers = Symtab.empty,
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     defs = [],
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     expand = [],
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     prep = NONE};
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  val copy = I;
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  val extend = I;
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  fun merge _
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    (({realizes_eqns = realizes_eqns1, typeof_eqns = typeof_eqns1, types = types1,
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       realizers = realizers1, defs = defs1, expand = expand1, prep = prep1},
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      {realizes_eqns = realizes_eqns2, typeof_eqns = typeof_eqns2, types = types2,
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       realizers = realizers2, defs = defs2, expand = expand2, prep = prep2}) : T * T) =
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    {realizes_eqns = merge_rules realizes_eqns1 realizes_eqns2,
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     typeof_eqns = merge_rules typeof_eqns1 typeof_eqns2,
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     types = AList.merge (op =) (K true) (types1, types2),
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     realizers = Symtab.merge_list (gen_eq_set (op =) o pairself #1) (realizers1, realizers2),
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     defs = Library.merge Thm.eq_thm (defs1, defs2),
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     expand = Library.merge (op =) (expand1, expand2),
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     prep = (case prep1 of NONE => prep2 | _ => prep1)};
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);
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fun read_condeq thy =
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  let val thy' = add_syntax thy
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  in fn s =>
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    let val t = Logic.varify (Syntax.read_prop_global thy' s)
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    in (map Logic.dest_equals (Logic.strip_imp_prems t),
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      Logic.dest_equals (Logic.strip_imp_concl t))
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    end handle TERM _ => error ("Not a (conditional) meta equality:\n" ^ s)
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  end;
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(** preprocessor **)
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fun set_preprocessor prep thy =
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  let val {realizes_eqns, typeof_eqns, types, realizers,
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    defs, expand, ...} = ExtractionData.get thy
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  in
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    ExtractionData.put
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      {realizes_eqns = realizes_eqns, typeof_eqns = typeof_eqns, types = types,
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       realizers = realizers, defs = defs, expand = expand, prep = SOME prep} thy
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  end;
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(** equations characterizing realizability **)
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fun gen_add_realizes_eqns prep_eq eqns thy =
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  let val {realizes_eqns, typeof_eqns, types, realizers,
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    defs, expand, prep} = ExtractionData.get thy;
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  in
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    ExtractionData.put
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      {realizes_eqns = List.foldr add_rule realizes_eqns (map (prep_eq thy) eqns),
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       typeof_eqns = typeof_eqns, types = types, realizers = realizers,
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       defs = defs, expand = expand, prep = prep} thy
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  end
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val add_realizes_eqns_i = gen_add_realizes_eqns (K I);
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val add_realizes_eqns = gen_add_realizes_eqns read_condeq;
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(** equations characterizing type of extracted program **)
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fun gen_add_typeof_eqns prep_eq eqns thy =
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  let
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    val {realizes_eqns, typeof_eqns, types, realizers,
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      defs, expand, prep} = ExtractionData.get thy;
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    val eqns' = map (prep_eq thy) eqns
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  in
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    ExtractionData.put
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      {realizes_eqns = realizes_eqns, realizers = realizers,
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       typeof_eqns = List.foldr add_rule typeof_eqns eqns',
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       types = types, defs = defs, expand = expand, prep = prep} thy
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  end
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val add_typeof_eqns_i = gen_add_typeof_eqns (K I);
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val add_typeof_eqns = gen_add_typeof_eqns read_condeq;
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fun thaw (T as TFree (a, S)) =
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      if exists_string (fn s => s = ":") a then TVar (unpack_ixn a, S) else T
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  | thaw (Type (a, Ts)) = Type (a, map thaw Ts)
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  | thaw T = T;
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fun freeze (TVar ((a, i), S)) = TFree (a ^ ":" ^ string_of_int i, S)
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  | freeze (Type (a, Ts)) = Type (a, map freeze Ts)
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  | freeze T = T;
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fun freeze_thaw f x =
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  map_types thaw (f (map_types freeze x));
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fun etype_of thy vs Ts t =
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  let
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    val {typeof_eqns, ...} = ExtractionData.get thy;
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    fun err () = error ("Unable to determine type of extracted program for\n" ^
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      Syntax.string_of_term_global thy t)
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  in case strip_abs_body (freeze_thaw (condrew thy (#net typeof_eqns)
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    [typeof_proc (Sign.defaultS thy) vs]) (list_abs (map (pair "x") (rev Ts),
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      Const ("typeof", fastype_of1 (Ts, t) --> Type ("Type", [])) $ t))) of
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      Const ("Type", _) $ u => (Logic.dest_type u handle TERM _ => err ())
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    | _ => err ()
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  end;
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(** realizers for axioms / theorems, together with correctness proofs **)
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fun gen_add_realizers prep_rlz rs thy =
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  let val {realizes_eqns, typeof_eqns, types, realizers,
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    defs, expand, prep} = ExtractionData.get thy
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  in
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    ExtractionData.put
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      {realizes_eqns = realizes_eqns, typeof_eqns = typeof_eqns, types = types,
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       realizers = fold (Symtab.cons_list o prep_rlz thy) rs realizers,
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       defs = defs, expand = expand, prep = prep} thy
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  end
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fun prep_realizer thy =
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  let
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    val {realizes_eqns, typeof_eqns, defs, types, ...} =
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      ExtractionData.get thy;
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    val procs = maps (fst o snd) types;
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    val rtypes = map fst types;
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    val eqns = Net.merge (K false) (#net realizes_eqns, #net typeof_eqns);
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    val thy' = add_syntax thy;
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    val rd = ProofSyntax.read_proof thy' false
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  in fn (thm, (vs, s1, s2)) =>
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    let
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      val name = Thm.get_name thm;
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      val _ = name <> "" orelse error "add_realizers: unnamed theorem";
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      val prop = Pattern.rewrite_term thy'
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        (map (Logic.dest_equals o prop_of) defs) [] (prop_of thm);
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      val vars = vars_of prop;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   312
      val vars' = filter_out (fn v =>
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   313
        member (op =) rtypes (tname_of (body_type (fastype_of v)))) vars;
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   314
      val T = etype_of thy' vs [] prop;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   315
      val (T', thw) = Type.freeze_thaw_type
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   316
        (if T = nullT then nullT else map fastype_of vars' ---> T);
27251
121991a4884d OldGoals.simple_read_term;
wenzelm
parents: 26939
diff changeset
   317
      val t = map_types thw (OldGoals.simple_read_term thy' T' s1);
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   318
      val r' = freeze_thaw (condrew thy' eqns
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   319
        (procs @ [typeof_proc (Sign.defaultS thy') vs, rlz_proc]))
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   320
          (Const ("realizes", T --> propT --> propT) $
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   321
            (if T = nullT then t else list_comb (t, vars')) $ prop);
27330
1af2598b5f7d Logic.all/mk_equals/mk_implies;
wenzelm
parents: 27251
diff changeset
   322
      val r = fold_rev Logic.all (map (get_var_type r') vars) r';
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   323
      val prf = Reconstruct.reconstruct_proof thy' r (rd s2);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   324
    in (name, (vs, (t, prf))) end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   325
  end;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   326
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   327
val add_realizers_i = gen_add_realizers
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   328
  (fn _ => fn (name, (vs, t, prf)) => (name, (vs, (t, prf))));
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   329
val add_realizers = gen_add_realizers prep_realizer;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   330
13714
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   331
fun realizes_of thy vs t prop =
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   332
  let
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   333
    val thy' = add_syntax thy;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   334
    val {realizes_eqns, typeof_eqns, defs, types, ...} =
13714
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   335
      ExtractionData.get thy';
22717
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   336
    val procs = maps (rev o fst o snd) types;
16800
90eff1b52428 improved Net interface;
wenzelm
parents: 16790
diff changeset
   337
    val eqns = Net.merge (K false) (#net realizes_eqns, #net typeof_eqns);
17203
29b2563f5c11 refer to theory instead of low-level tsig;
wenzelm
parents: 17057
diff changeset
   338
    val prop' = Pattern.rewrite_term thy'
13714
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   339
      (map (Logic.dest_equals o prop_of) defs) [] prop;
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   340
  in freeze_thaw (condrew thy' eqns
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   341
    (procs @ [typeof_proc (Sign.defaultS thy') vs, rlz_proc]))
13714
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   342
      (Const ("realizes", fastype_of t --> propT --> propT) $ t $ prop')
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   343
  end;
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   344
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   345
(** expanding theorems / definitions **)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   346
18728
6790126ab5f6 simplified type attribute;
wenzelm
parents: 18708
diff changeset
   347
fun add_expand_thm thm thy =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   348
  let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   349
    val {realizes_eqns, typeof_eqns, types, realizers,
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   350
      defs, expand, prep} = ExtractionData.get thy;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   351
21646
c07b5b0e8492 thm/prf: separate official name vs. additional tags;
wenzelm
parents: 20897
diff changeset
   352
    val name = Thm.get_name thm;
21858
05f57309170c avoid conflict with Alice keywords: renamed pack -> implode, unpack -> explode, any -> many, avoided assert;
wenzelm
parents: 21646
diff changeset
   353
    val _ = name <> "" orelse error "add_expand_thms: unnamed theorem";
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   354
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   355
    val is_def =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   356
      (case strip_comb (fst (Logic.dest_equals (prop_of thm))) of
18928
042608ffa2ec subsituted gen_duplicates / has_duplicates for duplicates whenever appropriate
haftmann
parents: 18921
diff changeset
   357
         (Const _, ts) => forall is_Var ts andalso not (has_duplicates (op =) ts)
28674
08a77c495dc1 renamed Thm.get_axiom_i to Thm.axiom;
wenzelm
parents: 28375
diff changeset
   358
           andalso (Thm.get_kind thm = Thm.definitionK orelse can (Thm.axiom thy) name)
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   359
       | _ => false) handle TERM _ => false;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   360
  in
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   361
    (ExtractionData.put (if is_def then
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   362
        {realizes_eqns = realizes_eqns,
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   363
         typeof_eqns = add_rule (([],
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   364
           Logic.dest_equals (prop_of (Drule.abs_def thm))), typeof_eqns),
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   365
         types = types,
22360
26ead7ed4f4b moved eq_thm etc. to structure Thm in Pure/more_thm.ML;
wenzelm
parents: 21858
diff changeset
   366
         realizers = realizers, defs = insert Thm.eq_thm thm defs,
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   367
         expand = expand, prep = prep}
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   368
      else
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   369
        {realizes_eqns = realizes_eqns, typeof_eqns = typeof_eqns, types = types,
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   370
         realizers = realizers, defs = defs,
20854
f9cf9e62d11c insert replacing ins ins_int ins_string
haftmann
parents: 20664
diff changeset
   371
         expand = insert (op =) (name, prop_of thm) expand, prep = prep}) thy)
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   372
  end;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   373
18728
6790126ab5f6 simplified type attribute;
wenzelm
parents: 18708
diff changeset
   374
val add_expand_thms = fold add_expand_thm;
6790126ab5f6 simplified type attribute;
wenzelm
parents: 18708
diff changeset
   375
30528
7173bf123335 simplified attribute setup;
wenzelm
parents: 30435
diff changeset
   376
val extraction_expand = Thm.declaration_attribute (fn th => Context.mapping (add_expand_thm th) I);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   377
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   378
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   379
(** types with computational content **)
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   380
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   381
fun add_types tys thy =
22717
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   382
  ExtractionData.map
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   383
    (fn {realizes_eqns, typeof_eqns, types, realizers, defs, expand, prep} =>
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   384
      {realizes_eqns = realizes_eqns, typeof_eqns = typeof_eqns,
22717
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   385
       types = fold (AList.update (op =) o apfst (Sign.intern_type thy)) tys types,
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   386
       realizers = realizers, defs = defs, expand = expand, prep = prep})
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   387
    thy;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   388
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   389
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   390
(** Pure setup **)
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   391
26463
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   392
val _ = Context.>> (Context.map_theory
18708
4b3dadb4fe33 setup: theory -> theory;
wenzelm
parents: 18358
diff changeset
   393
  (add_types [("prop", ([], NONE))] #>
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   394
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   395
   add_typeof_eqns
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   396
     ["(typeof (PROP P)) == (Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   397
    \  (typeof (PROP Q)) == (Type (TYPE('Q))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   398
    \    (typeof (PROP P ==> PROP Q)) == (Type (TYPE('Q)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   399
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   400
      "(typeof (PROP Q)) == (Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   401
    \    (typeof (PROP P ==> PROP Q)) == (Type (TYPE(Null)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   402
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   403
      "(typeof (PROP P)) == (Type (TYPE('P))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   404
    \  (typeof (PROP Q)) == (Type (TYPE('Q))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   405
    \    (typeof (PROP P ==> PROP Q)) == (Type (TYPE('P => 'Q)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   406
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   407
      "(%x. typeof (PROP P (x))) == (%x. Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   408
    \    (typeof (!!x. PROP P (x))) == (Type (TYPE(Null)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   409
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   410
      "(%x. typeof (PROP P (x))) == (%x. Type (TYPE('P))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   411
    \    (typeof (!!x::'a. PROP P (x))) == (Type (TYPE('a => 'P)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   412
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   413
      "(%x. typeof (f (x))) == (%x. Type (TYPE('f))) ==>  \
18708
4b3dadb4fe33 setup: theory -> theory;
wenzelm
parents: 18358
diff changeset
   414
    \    (typeof (f)) == (Type (TYPE('f)))"] #>
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   415
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   416
   add_realizes_eqns
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   417
     ["(typeof (PROP P)) == (Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   418
    \    (realizes (r) (PROP P ==> PROP Q)) ==  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   419
    \    (PROP realizes (Null) (PROP P) ==> PROP realizes (r) (PROP Q))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   420
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   421
      "(typeof (PROP P)) == (Type (TYPE('P))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   422
    \  (typeof (PROP Q)) == (Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   423
    \    (realizes (r) (PROP P ==> PROP Q)) ==  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   424
    \    (!!x::'P. PROP realizes (x) (PROP P) ==> PROP realizes (Null) (PROP Q))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   425
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   426
      "(realizes (r) (PROP P ==> PROP Q)) ==  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   427
    \  (!!x. PROP realizes (x) (PROP P) ==> PROP realizes (r (x)) (PROP Q))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   428
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   429
      "(%x. typeof (PROP P (x))) == (%x. Type (TYPE(Null))) ==>  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   430
    \    (realizes (r) (!!x. PROP P (x))) ==  \
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   431
    \    (!!x. PROP realizes (Null) (PROP P (x)))",
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   432
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   433
      "(realizes (r) (!!x. PROP P (x))) ==  \
18708
4b3dadb4fe33 setup: theory -> theory;
wenzelm
parents: 18358
diff changeset
   434
    \  (!!x. PROP realizes (r (x)) (PROP P (x)))"] #>
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   435
30528
7173bf123335 simplified attribute setup;
wenzelm
parents: 30435
diff changeset
   436
   Attrib.setup (Binding.name "extraction_expand") (Scan.succeed extraction_expand)
7173bf123335 simplified attribute setup;
wenzelm
parents: 30435
diff changeset
   437
     "specify theorems / definitions to be expanded during extraction"));
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   438
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15798
diff changeset
   439
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   440
(**** extract program ****)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   441
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   442
val dummyt = Const ("dummy", dummyT);
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   443
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   444
fun extract thms thy =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   445
  let
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   446
    val thy' = add_syntax thy;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   447
    val {realizes_eqns, typeof_eqns, types, realizers, defs, expand, prep} =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   448
      ExtractionData.get thy;
22717
74dbc7696083 canonical merge operations
haftmann
parents: 22675
diff changeset
   449
    val procs = maps (rev o fst o snd) types;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   450
    val rtypes = map fst types;
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   451
    val typroc = typeof_proc (Sign.defaultS thy');
19466
wenzelm
parents: 19391
diff changeset
   452
    val prep = the_default (K I) prep thy' o ProofRewriteRules.elim_defs thy' false defs o
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   453
      Reconstruct.expand_proof thy' (("", NONE) :: map (apsnd SOME) expand);
16800
90eff1b52428 improved Net interface;
wenzelm
parents: 16790
diff changeset
   454
    val rrews = Net.merge (K false) (#net realizes_eqns, #net typeof_eqns);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   455
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   456
    fun find_inst prop Ts ts vs =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   457
      let
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   458
        val rvs = relevant_vars rtypes prop;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   459
        val vars = vars_of prop;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   460
        val n = Int.min (length vars, length ts);
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   461
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   462
        fun add_args ((Var ((a, i), _), t), (vs', tye)) =
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   463
          if member (op =) rvs a then
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   464
            let val T = etype_of thy' vs Ts t
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   465
            in if T = nullT then (vs', tye)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   466
               else (a :: vs', (("'" ^ a, i), T) :: tye)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   467
            end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   468
          else (vs', tye)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   469
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22924
diff changeset
   470
      in List.foldr add_args ([], []) (Library.take (n, vars) ~~ Library.take (n, ts)) end;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   471
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   472
    fun find (vs: string list) = Option.map snd o find_first (curry (gen_eq_set (op =)) vs o fst);
28375
c879d88d038a eliminated polymorphic equality;
wenzelm
parents: 28370
diff changeset
   473
    fun find' (s: string) = map_filter (fn (s', x) => if s = s' then SOME x else NONE);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   474
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   475
    fun app_rlz_rews Ts vs t = strip_abs (length Ts) (freeze_thaw
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   476
      (condrew thy' rrews (procs @ [typroc vs, rlz_proc])) (list_abs
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   477
        (map (pair "x") (rev Ts), t)));
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   478
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   479
    fun realizes_null vs prop = app_rlz_rews [] vs
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   480
      (Const ("realizes", nullT --> propT --> propT) $ nullt $ prop);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   481
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   482
    fun corr d defs vs ts Ts hs (PBound i) _ _ = (defs, PBound i)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   483
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   484
      | corr d defs vs ts Ts hs (Abst (s, SOME T, prf)) (Abst (_, _, prf')) t =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   485
          let val (defs', corr_prf) = corr d defs vs [] (T :: Ts)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   486
            (dummyt :: hs) prf (incr_pboundvars 1 0 prf')
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   487
            (case t of SOME (Abs (_, _, u)) => SOME u | _ => NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   488
          in (defs', Abst (s, SOME T, corr_prf)) end
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   489
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   490
      | corr d defs vs ts Ts hs (AbsP (s, SOME prop, prf)) (AbsP (_, _, prf')) t =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   491
          let
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   492
            val T = etype_of thy' vs Ts prop;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   493
            val u = if T = nullT then 
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   494
                (case t of SOME u => SOME (incr_boundvars 1 u) | NONE => NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   495
              else (case t of SOME (Abs (_, _, u)) => SOME u | _ => NONE);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   496
            val (defs', corr_prf) = corr d defs vs [] (T :: Ts) (prop :: hs)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   497
              (incr_pboundvars 0 1 prf) (incr_pboundvars 0 1 prf') u;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   498
            val rlz = Const ("realizes", T --> propT --> propT)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   499
          in (defs',
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   500
            if T = nullT then AbsP ("R",
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   501
              SOME (app_rlz_rews Ts vs (rlz $ nullt $ prop)),
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   502
                prf_subst_bounds [nullt] corr_prf)
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   503
            else Abst (s, SOME T, AbsP ("R",
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   504
              SOME (app_rlz_rews (T :: Ts) vs
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   505
                (rlz $ Bound 0 $ incr_boundvars 1 prop)), corr_prf)))
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   506
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   507
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   508
      | corr d defs vs ts Ts hs (prf % SOME t) (prf' % _) t' =
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   509
          let
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   510
            val (Us, T) = strip_type (fastype_of1 (Ts, t));
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   511
            val (defs', corr_prf) = corr d defs vs (t :: ts) Ts hs prf prf'
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   512
              (if member (op =) rtypes (tname_of T) then t'
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   513
               else (case t' of SOME (u $ _) => SOME u | _ => NONE));
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   514
            val u = if not (member (op =) rtypes (tname_of T)) then t else
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   515
              let
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   516
                val eT = etype_of thy' vs Ts t;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   517
                val (r, Us') = if eT = nullT then (nullt, Us) else
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   518
                  (Bound (length Us), eT :: Us);
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   519
                val u = list_comb (incr_boundvars (length Us') t,
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   520
                  map Bound (length Us - 1 downto 0));
17271
2756a73f63a5 introduced some new-style AList operations
haftmann
parents: 17232
diff changeset
   521
                val u' = (case AList.lookup (op =) types (tname_of T) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   522
                    SOME ((_, SOME f)) => f r eT u T
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   523
                  | _ => Const ("realizes", eT --> T --> T) $ r $ u)
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   524
              in app_rlz_rews Ts vs (list_abs (map (pair "x") Us', u')) end
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   525
          in (defs', corr_prf % SOME u) end
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   526
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   527
      | corr d defs vs ts Ts hs (prf1 %% prf2) (prf1' %% prf2') t =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   528
          let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   529
            val prop = Reconstruct.prop_of' hs prf2';
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   530
            val T = etype_of thy' vs Ts prop;
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   531
            val (defs1, f, u) = if T = nullT then (defs, t, NONE) else
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   532
              (case t of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   533
                 SOME (f $ u) => (defs, SOME f, SOME u)
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   534
               | _ =>
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   535
                 let val (defs1, u) = extr d defs vs [] Ts hs prf2'
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   536
                 in (defs1, NONE, SOME u) end)
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   537
            val (defs2, corr_prf1) = corr d defs1 vs [] Ts hs prf1 prf1' f;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   538
            val (defs3, corr_prf2) = corr d defs2 vs [] Ts hs prf2 prf2' u;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   539
          in
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   540
            if T = nullT then (defs3, corr_prf1 %% corr_prf2) else
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   541
              (defs3, corr_prf1 % u %% corr_prf2)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   542
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   543
28805
8136e5736808 Thm.proof_of returns proof_body;
wenzelm
parents: 28674
diff changeset
   544
      | corr d defs vs ts Ts hs (prf0 as PThm (_, ((name, prop, SOME Ts'), body))) _ _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   545
          let
29635
31d14e9fa0da proof_body: turned lazy into future -- ensures that body is fulfilled eventually, without explicit force;
wenzelm
parents: 29579
diff changeset
   546
            val prf = join_proof body;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   547
            val (vs', tye) = find_inst prop Ts ts vs;
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   548
            val tye' = (map fst (OldTerm.term_tvars prop) ~~ Ts') @ tye;
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   549
            val T = etype_of thy' vs' [] prop;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   550
            val defs' = if T = nullT then defs
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   551
              else fst (extr d defs vs ts Ts hs prf0)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   552
          in
13609
73c3915553b4 Added check for axioms with "realizes Null A = A".
berghofe
parents: 13417
diff changeset
   553
            if T = nullT andalso realizes_null vs' prop aconv prop then (defs, prf0)
17412
e26cb20ef0cc TableFun/Symtab: curried lookup and update;
wenzelm
parents: 17271
diff changeset
   554
            else case Symtab.lookup realizers name of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   555
              NONE => (case find vs' (find' name defs') of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   556
                NONE =>
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   557
                  let
21858
05f57309170c avoid conflict with Alice keywords: renamed pack -> implode, unpack -> explode, any -> many, avoided assert;
wenzelm
parents: 21646
diff changeset
   558
                    val _ = T = nullT orelse error "corr: internal error";
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   559
                    val _ = msg d ("Building correctness proof for " ^ quote name ^
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   560
                      (if null vs' then ""
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   561
                       else " (relevant variables: " ^ commas_quote vs' ^ ")"));
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   562
                    val prf' = prep (Reconstruct.reconstruct_proof thy' prop prf);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   563
                    val (defs'', corr_prf) =
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   564
                      corr (d + 1) defs' vs' [] [] [] prf' prf' NONE;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   565
                    val corr_prop = Reconstruct.prop_of corr_prf;
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22924
diff changeset
   566
                    val corr_prf' = List.foldr forall_intr_prf
15574
b1d1b5bfc464 Removed practically all references to Library.foldr.
skalberg
parents: 15570
diff changeset
   567
                      (proof_combt
28805
8136e5736808 Thm.proof_of returns proof_body;
wenzelm
parents: 28674
diff changeset
   568
                         (PThm (serial (),
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   569
                          ((corr_name name vs', corr_prop, SOME (map TVar (OldTerm.term_tvars corr_prop))),
30718
15041c7e51e4 Proofterm.approximate_proof_body;
wenzelm
parents: 30528
diff changeset
   570
                            Future.value (approximate_proof_body corr_prf))), vfs_of corr_prop))
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   571
                      (map (get_var_type corr_prop) (vfs_of prop))
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   572
                  in
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   573
                    ((name, (vs', ((nullt, nullt), (corr_prf, corr_prf')))) :: defs'',
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   574
                     prf_subst_TVars tye' corr_prf')
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   575
                  end
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   576
              | SOME (_, (_, prf')) => (defs', prf_subst_TVars tye' prf'))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   577
            | SOME rs => (case find vs' rs of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   578
                SOME (_, prf') => (defs', prf_subst_TVars tye' prf')
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   579
              | NONE => error ("corr: no realizer for instance of theorem " ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   580
                  quote name ^ ":\n" ^ Syntax.string_of_term_global thy' (Envir.beta_norm
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   581
                    (Reconstruct.prop_of (proof_combt (prf0, ts))))))
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   582
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   583
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   584
      | corr d defs vs ts Ts hs (prf0 as PAxm (s, prop, SOME Ts')) _ _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   585
          let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   586
            val (vs', tye) = find_inst prop Ts ts vs;
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   587
            val tye' = (map fst (OldTerm.term_tvars prop) ~~ Ts') @ tye
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   588
          in
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   589
            if etype_of thy' vs' [] prop = nullT andalso
13609
73c3915553b4 Added check for axioms with "realizes Null A = A".
berghofe
parents: 13417
diff changeset
   590
              realizes_null vs' prop aconv prop then (defs, prf0)
18956
c050ae1f8f52 Envir.(beta_)eta_contract;
wenzelm
parents: 18928
diff changeset
   591
            else case find vs' (Symtab.lookup_list realizers s) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   592
              SOME (_, prf) => (defs, prf_subst_TVars tye' prf)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   593
            | NONE => error ("corr: no realizer for instance of axiom " ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   594
                quote s ^ ":\n" ^ Syntax.string_of_term_global thy' (Envir.beta_norm
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   595
                  (Reconstruct.prop_of (proof_combt (prf0, ts)))))
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   596
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   597
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   598
      | corr d defs vs ts Ts hs _ _ _ = error "corr: bad proof"
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   599
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   600
    and extr d defs vs ts Ts hs (PBound i) = (defs, Bound i)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   601
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   602
      | extr d defs vs ts Ts hs (Abst (s, SOME T, prf)) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   603
          let val (defs', t) = extr d defs vs []
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   604
            (T :: Ts) (dummyt :: hs) (incr_pboundvars 1 0 prf)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   605
          in (defs', Abs (s, T, t)) end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   606
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   607
      | extr d defs vs ts Ts hs (AbsP (s, SOME t, prf)) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   608
          let
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   609
            val T = etype_of thy' vs Ts t;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   610
            val (defs', t) = extr d defs vs [] (T :: Ts) (t :: hs)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   611
              (incr_pboundvars 0 1 prf)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   612
          in (defs',
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   613
            if T = nullT then subst_bound (nullt, t) else Abs (s, T, t))
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   614
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   615
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   616
      | extr d defs vs ts Ts hs (prf % SOME t) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   617
          let val (defs', u) = extr d defs vs (t :: ts) Ts hs prf
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   618
          in (defs',
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   619
            if member (op =) rtypes (tname_of (body_type (fastype_of1 (Ts, t)))) then u
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   620
            else u $ t)
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   621
          end
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   622
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   623
      | extr d defs vs ts Ts hs (prf1 %% prf2) =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   624
          let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   625
            val (defs', f) = extr d defs vs [] Ts hs prf1;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   626
            val prop = Reconstruct.prop_of' hs prf2;
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   627
            val T = etype_of thy' vs Ts prop
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   628
          in
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   629
            if T = nullT then (defs', f) else
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   630
              let val (defs'', t) = extr d defs' vs [] Ts hs prf2
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   631
              in (defs'', f $ t) end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   632
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   633
28805
8136e5736808 Thm.proof_of returns proof_body;
wenzelm
parents: 28674
diff changeset
   634
      | extr d defs vs ts Ts hs (prf0 as PThm (_, ((s, prop, SOME Ts'), body))) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   635
          let
29635
31d14e9fa0da proof_body: turned lazy into future -- ensures that body is fulfilled eventually, without explicit force;
wenzelm
parents: 29579
diff changeset
   636
            val prf = join_proof body;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   637
            val (vs', tye) = find_inst prop Ts ts vs;
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   638
            val tye' = (map fst (OldTerm.term_tvars prop) ~~ Ts') @ tye
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   639
          in
17412
e26cb20ef0cc TableFun/Symtab: curried lookup and update;
wenzelm
parents: 17271
diff changeset
   640
            case Symtab.lookup realizers s of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   641
              NONE => (case find vs' (find' s defs) of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   642
                NONE =>
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   643
                  let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   644
                    val _ = msg d ("Extracting " ^ quote s ^
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   645
                      (if null vs' then ""
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   646
                       else " (relevant variables: " ^ commas_quote vs' ^ ")"));
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   647
                    val prf' = prep (Reconstruct.reconstruct_proof thy' prop prf);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   648
                    val (defs', t) = extr (d + 1) defs vs' [] [] [] prf';
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   649
                    val (defs'', corr_prf) =
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   650
                      corr (d + 1) defs' vs' [] [] [] prf' prf' (SOME t);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   651
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   652
                    val nt = Envir.beta_norm t;
20664
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   653
                    val args = filter_out (fn v => member (op =) rtypes
ffbc5a57191a member (op =);
wenzelm
parents: 20548
diff changeset
   654
                      (tname_of (body_type (fastype_of v)))) (vfs_of prop);
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15531
diff changeset
   655
                    val args' = List.filter (fn v => Logic.occs (v, nt)) args;
15574
b1d1b5bfc464 Removed practically all references to Library.foldr.
skalberg
parents: 15570
diff changeset
   656
                    val t' = mkabs nt args';
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   657
                    val T = fastype_of t';
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   658
                    val cname = extr_name s vs';
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   659
                    val c = Const (cname, T);
15574
b1d1b5bfc464 Removed practically all references to Library.foldr.
skalberg
parents: 15570
diff changeset
   660
                    val u = mkabs (list_comb (c, args')) args;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   661
                    val eqn = Logic.mk_equals (c, t');
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   662
                    val rlz =
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   663
                      Const ("realizes", fastype_of nt --> propT --> propT);
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   664
                    val lhs = app_rlz_rews [] vs' (rlz $ nt $ prop);
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   665
                    val rhs = app_rlz_rews [] vs' (rlz $ list_comb (c, args') $ prop);
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   666
                    val f = app_rlz_rews [] vs'
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   667
                      (Abs ("x", T, rlz $ list_comb (Bound 0, args') $ prop));
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   668
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   669
                    val corr_prf' =
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   670
                      chtype [] equal_elim_axm %> lhs %> rhs %%
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   671
                       (chtype [propT] symmetric_axm %> rhs %> lhs %%
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   672
                         (chtype [propT, T] combination_axm %> f %> f %> c %> t' %%
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   673
                           (chtype [T --> propT] reflexive_axm %> f) %%
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   674
                           PAxm (cname ^ "_def", eqn,
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   675
                             SOME (map TVar (OldTerm.term_tvars eqn))))) %% corr_prf;
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   676
                    val corr_prop = Reconstruct.prop_of corr_prf';
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22924
diff changeset
   677
                    val corr_prf'' = List.foldr forall_intr_prf
15574
b1d1b5bfc464 Removed practically all references to Library.foldr.
skalberg
parents: 15570
diff changeset
   678
                      (proof_combt
28805
8136e5736808 Thm.proof_of returns proof_body;
wenzelm
parents: 28674
diff changeset
   679
                        (PThm (serial (),
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   680
                         ((corr_name s vs', corr_prop, SOME (map TVar (OldTerm.term_tvars corr_prop))),
30718
15041c7e51e4 Proofterm.approximate_proof_body;
wenzelm
parents: 30528
diff changeset
   681
                           Future.value (approximate_proof_body corr_prf'))), vfs_of corr_prop))
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   682
                      (map (get_var_type corr_prop) (vfs_of prop));
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   683
                  in
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   684
                    ((s, (vs', ((t', u), (corr_prf', corr_prf'')))) :: defs'',
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   685
                     subst_TVars tye' u)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   686
                  end
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   687
              | SOME ((_, u), _) => (defs, subst_TVars tye' u))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   688
            | SOME rs => (case find vs' rs of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   689
                SOME (t, _) => (defs, subst_TVars tye' t)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   690
              | NONE => error ("extr: no realizer for instance of theorem " ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   691
                  quote s ^ ":\n" ^ Syntax.string_of_term_global thy' (Envir.beta_norm
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   692
                    (Reconstruct.prop_of (proof_combt (prf0, ts))))))
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   693
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   694
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   695
      | extr d defs vs ts Ts hs (prf0 as PAxm (s, prop, SOME Ts')) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   696
          let
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   697
            val (vs', tye) = find_inst prop Ts ts vs;
29270
0eade173f77e moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents: 29265
diff changeset
   698
            val tye' = (map fst (OldTerm.term_tvars prop) ~~ Ts') @ tye
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   699
          in
18956
c050ae1f8f52 Envir.(beta_)eta_contract;
wenzelm
parents: 18928
diff changeset
   700
            case find vs' (Symtab.lookup_list realizers s) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   701
              SOME (t, _) => (defs, subst_TVars tye' t)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   702
            | NONE => error ("extr: no realizer for instance of axiom " ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   703
                quote s ^ ":\n" ^ Syntax.string_of_term_global thy' (Envir.beta_norm
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   704
                  (Reconstruct.prop_of (proof_combt (prf0, ts)))))
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   705
          end
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   706
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   707
      | extr d defs vs ts Ts hs _ = error "extr: bad proof";
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   708
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   709
    fun prep_thm (thm, vs) =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   710
      let
26626
c6231d64d264 rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26481
diff changeset
   711
        val thy = Thm.theory_of_thm thm;
c6231d64d264 rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26481
diff changeset
   712
        val prop = Thm.prop_of thm;
28814
463c9e9111ae clarified Thm.proof_body_of vs. Thm.proof_of;
wenzelm
parents: 28812
diff changeset
   713
        val prf = Thm.proof_of thm;
21646
c07b5b0e8492 thm/prf: separate official name vs. additional tags;
wenzelm
parents: 20897
diff changeset
   714
        val name = Thm.get_name thm;
21858
05f57309170c avoid conflict with Alice keywords: renamed pack -> implode, unpack -> explode, any -> many, avoided assert;
wenzelm
parents: 21646
diff changeset
   715
        val _ = name <> "" orelse error "extraction: unnamed theorem";
05f57309170c avoid conflict with Alice keywords: renamed pack -> implode, unpack -> explode, any -> many, avoided assert;
wenzelm
parents: 21646
diff changeset
   716
        val _ = etype_of thy' vs [] prop <> nullT orelse error ("theorem " ^
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   717
          quote name ^ " has no computational content")
22596
d0d2af4db18f rep_thm/cterm/ctyp: removed obsolete sign field;
wenzelm
parents: 22360
diff changeset
   718
      in (Reconstruct.reconstruct_proof thy prop prf, vs) end;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   719
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15531
diff changeset
   720
    val defs = Library.foldl (fn (defs, (prf, vs)) =>
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   721
      fst (extr 0 defs vs [] [] [] prf)) ([], map prep_thm thms);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   722
16149
d8cac577493c Theory.restore_naming;
wenzelm
parents: 15801
diff changeset
   723
    fun add_def (s, (vs, ((t, u), (prf, _)))) thy =
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   724
      (case Sign.const_type thy (extr_name s vs) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   725
         NONE =>
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   726
           let
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   727
             val corr_prop = Reconstruct.prop_of prf;
16287
7a03b4b4df67 Type.freeze;
wenzelm
parents: 16195
diff changeset
   728
             val ft = Type.freeze t;
7a03b4b4df67 Type.freeze;
wenzelm
parents: 16195
diff changeset
   729
             val fu = Type.freeze u;
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   730
             val (def_thms, thy') = if t = nullt then ([], thy) else
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   731
               thy
30435
e62d6ecab6ad explicit Binding.qualified_name -- prevents implicitly qualified bstring;
wenzelm
parents: 30364
diff changeset
   732
               |> Sign.add_consts_i [(Binding.qualified_name (extr_name s vs), fastype_of ft, NoSyn)]
e62d6ecab6ad explicit Binding.qualified_name -- prevents implicitly qualified bstring;
wenzelm
parents: 30364
diff changeset
   733
               |> PureThy.add_defs false [((Binding.qualified_name (extr_name s vs ^ "_def"),
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   734
                    Logic.mk_equals (head_of (strip_abs_body fu), ft)), [])]
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   735
           in
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   736
             thy'
30435
e62d6ecab6ad explicit Binding.qualified_name -- prevents implicitly qualified bstring;
wenzelm
parents: 30364
diff changeset
   737
             |> PureThy.store_thm (Binding.qualified_name (corr_name s vs),
29265
5b4247055bd7 moved old add_term_vars, add_term_frees etc. to structure OldTerm;
wenzelm
parents: 28814
diff changeset
   738
                  Thm.varifyT (funpow (length (OldTerm.term_vars corr_prop))
26653
60e0cf6bef89 Thm.forall_elim_var(s);
wenzelm
parents: 26626
diff changeset
   739
                    (Thm.forall_elim_var 0) (forall_intr_frees
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   740
                      (ProofChecker.thm_of_proof thy'
26481
92e901171cc8 simplified PureThy.store_thm;
wenzelm
parents: 26463
diff changeset
   741
                       (fst (Proofterm.freeze_thaw_prf prf))))))
22750
bff5d59de79b adds extracted program to code theorem table
haftmann
parents: 22717
diff changeset
   742
             |> snd
28370
37f56e6e702d removed obsolete name convention "func"
haftmann
parents: 27865
diff changeset
   743
             |> fold Code.add_default_eqn def_thms
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   744
           end
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15457
diff changeset
   745
       | SOME _ => thy);
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   746
16149
d8cac577493c Theory.restore_naming;
wenzelm
parents: 15801
diff changeset
   747
  in
d8cac577493c Theory.restore_naming;
wenzelm
parents: 15801
diff changeset
   748
    thy
30435
e62d6ecab6ad explicit Binding.qualified_name -- prevents implicitly qualified bstring;
wenzelm
parents: 30364
diff changeset
   749
    |> Sign.root_path
16149
d8cac577493c Theory.restore_naming;
wenzelm
parents: 15801
diff changeset
   750
    |> fold_rev add_def defs
22796
34c316d7b630 renamed some old names Theory.xxx to Sign.xxx;
wenzelm
parents: 22750
diff changeset
   751
    |> Sign.restore_naming thy
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   752
  end;
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   753
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   754
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   755
(**** interface ****)
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   756
17057
0934ac31985f OuterKeyword;
wenzelm
parents: 16983
diff changeset
   757
structure P = OuterParse and K = OuterKeyword;
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   758
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   759
val parse_vars = Scan.optional (P.$$$ "(" |-- P.list1 P.name --| P.$$$ ")") [];
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   760
24867
e5b55d7be9bb simplified interfaces for outer syntax;
wenzelm
parents: 24712
diff changeset
   761
val _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   762
  OuterSyntax.command "realizers"
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   763
  "specify realizers for primitive axioms / theorems, together with correctness proof"
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   764
  K.thy_decl
13732
f8badfef5cf2 Correctness proofs are now modular, too.
berghofe
parents: 13719
diff changeset
   765
    (Scan.repeat1 (P.xname -- parse_vars --| P.$$$ ":" -- P.string -- P.string) >>
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   766
     (fn xs => Toplevel.theory (fn thy => add_realizers
26343
0dd2eab7b296 simplified get_thm(s): back to plain name argument;
wenzelm
parents: 26336
diff changeset
   767
       (map (fn (((a, vs), s1), s2) => (PureThy.get_thm thy a, (vs, s1, s2))) xs) thy)));
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   768
24867
e5b55d7be9bb simplified interfaces for outer syntax;
wenzelm
parents: 24712
diff changeset
   769
val _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   770
  OuterSyntax.command "realizability"
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   771
  "add equations characterizing realizability" K.thy_decl
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   772
  (Scan.repeat1 P.string >> (Toplevel.theory o add_realizes_eqns));
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   773
24867
e5b55d7be9bb simplified interfaces for outer syntax;
wenzelm
parents: 24712
diff changeset
   774
val _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   775
  OuterSyntax.command "extract_type"
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   776
  "add equations characterizing type of extracted program" K.thy_decl
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   777
  (Scan.repeat1 P.string >> (Toplevel.theory o add_typeof_eqns));
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   778
24867
e5b55d7be9bb simplified interfaces for outer syntax;
wenzelm
parents: 24712
diff changeset
   779
val _ =
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   780
  OuterSyntax.command "extract" "extract terms from proofs" K.thy_decl
26336
a0e2b706ce73 renamed datatype thmref to Facts.ref, tuned interfaces;
wenzelm
parents: 25389
diff changeset
   781
    (Scan.repeat1 (P.xname -- parse_vars) >> (fn xs => Toplevel.theory (fn thy =>
26343
0dd2eab7b296 simplified get_thm(s): back to plain name argument;
wenzelm
parents: 26336
diff changeset
   782
      extract (map (apfst (PureThy.get_thm thy)) xs) thy)));
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   783
16458
4c6fd0c01d28 accomodate change of TheoryDataFun;
wenzelm
parents: 16363
diff changeset
   784
val etype_of = etype_of o add_syntax;
13714
bdd483321f4b - exported functions etype_of and mk_typ
berghofe
parents: 13609
diff changeset
   785
13402
e6e826bb8c3c Added program extraction module.
berghofe
parents:
diff changeset
   786
end;