src/Tools/Code/code_runtime.ML
author wenzelm
Fri Feb 16 19:30:28 2018 +0100 (17 months ago)
changeset 67630 25cb2299f8a4
parent 67338 b164fdbb423d
child 67649 1e1782c1aedf
permissions -rw-r--r--
trim context of persistent data;
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(*  Title:      Tools/Code/code_runtime.ML
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    Author:     Florian Haftmann, TU Muenchen
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Runtime services building on code generation into implementation language SML.
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*)
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signature CODE_RUNTIME =
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sig
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  val target: string
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  val value: Proof.context ->
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    (Proof.context -> unit -> 'a) * ((unit -> 'a) -> Proof.context -> Proof.context) * string ->
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    string * string -> 'a
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  type 'a cookie = (Proof.context -> unit -> 'a) * ((unit -> 'a) -> Proof.context -> Proof.context) * string
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  val dynamic_value: 'a cookie -> Proof.context -> string option
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    -> ((term -> term) -> 'a -> 'a) -> term -> string list -> 'a option
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  val dynamic_value_strict: 'a cookie -> Proof.context -> string option
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    -> ((term -> term) -> 'a -> 'a) -> term -> string list -> 'a
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  val dynamic_value_exn: 'a cookie -> Proof.context -> string option
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    -> ((term -> term) -> 'a -> 'a) -> term -> string list -> 'a Exn.result
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  val dynamic_holds_conv: Proof.context -> conv
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  val code_reflect: (string * string list option) list -> string list -> string
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    -> string option -> theory -> theory
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  datatype truth = Holds
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  val put_truth: (unit -> truth) -> Proof.context -> Proof.context
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  val mount_computation: Proof.context -> (string * typ) list -> typ
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    -> (term -> 'ml) -> ((term -> term) -> 'ml option -> 'a) -> Proof.context -> term -> 'a
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  val mount_computation_conv: Proof.context -> (string * typ) list -> typ
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    -> (term -> 'ml) -> (Proof.context -> 'ml -> conv) -> Proof.context -> conv
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  val mount_computation_check: Proof.context -> (string * typ) list
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    -> (term -> truth) -> Proof.context -> conv
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  val polyml_as_definition: (binding * typ) list -> Path.T list -> theory -> theory
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  val trace: bool Config.T
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end;
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structure Code_Runtime : CODE_RUNTIME =
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struct
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open Basic_Code_Symbol;
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(** ML compiler as evaluation environment **)
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(* technical prerequisites *)
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val thisN = "Code_Runtime";
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val prefix_this = Long_Name.append thisN;
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val truthN = prefix_this "truth";
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val HoldsN = prefix_this "Holds";
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val target = "Eval";
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datatype truth = Holds;
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val _ = Theory.setup
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  (Code_Target.add_derived_target (target, [(Code_ML.target_SML, I)])
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  #> Code_Target.set_printings (Type_Constructor (@{type_name prop},
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    [(target, SOME (0, (K o K o K) (Code_Printer.str truthN)))]))
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  #> Code_Target.set_printings (Constant (@{const_name Code_Generator.holds},
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    [(target, SOME (Code_Printer.plain_const_syntax HoldsN))]))
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  #> Code_Target.add_reserved target thisN
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  #> fold (Code_Target.add_reserved target) ["oo", "ooo", "oooo", "upto", "downto", "orf", "andf"]);
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       (*avoid further pervasive infix names*)
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val trace = Attrib.setup_config_bool @{binding "code_runtime_trace"} (K false);
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fun compile_ML verbose code context =
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 (if Config.get_generic context trace then tracing code else ();
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  Code_Preproc.timed "compiling ML" Context.proof_of
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    (ML_Context.exec (fn () => ML_Compiler0.ML ML_Env.context
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    {line = 0, file = "generated code", verbose = verbose,
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       debug = false} code)) context);
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fun value ctxt (get, put, put_ml) (prelude, value) =
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  let
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    val code =
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      prelude ^ "\nval _ = Context.put_generic_context (SOME (Context.map_proof (" ^
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      put_ml ^ " (fn () => " ^ value ^ ")) (Context.the_generic_context ())))";
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    val ctxt' = ctxt
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      |> put (fn () => error ("Bad compilation for " ^ quote put_ml))
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      |> Context.proof_map (compile_ML false code);
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    val computator = get ctxt';
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  in Code_Preproc.timed_exec "running ML" computator ctxt' end;
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(* evaluation into ML language values *)
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type 'a cookie = (Proof.context -> unit -> 'a) * ((unit -> 'a) -> Proof.context -> Proof.context) * string;
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fun reject_vars ctxt t =
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  ((Sign.no_frees ctxt o Sign.no_vars ctxt o map_types (K dummyT)) t; t);
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fun build_compilation_text ctxt some_target program consts =
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  Code_Target.compilation_text ctxt (the_default target some_target) program consts false
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  #>> (fn ml_modules => space_implode "\n\n" (map snd ml_modules));
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fun run_compilation_text cookie ctxt comp vs_t args =
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  let
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    val (program_code, value_name) = comp vs_t;
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    val value_code = space_implode " "
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      (value_name :: "()" :: map (enclose "(" ")") args);
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  in Exn.interruptible_capture (value ctxt cookie) (program_code, value_code) end;
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fun partiality_as_none e = SOME (Exn.release e)
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  handle General.Match => NONE
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    | General.Bind => NONE
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    | General.Fail _ => NONE;
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fun dynamic_value_exn cookie ctxt some_target postproc t args =
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  let
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    val _ = reject_vars ctxt t;
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    val _ = if Config.get ctxt trace
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      then tracing ("Evaluation of term " ^ quote (Syntax.string_of_term ctxt t))
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      else ()
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    fun comp program _ vs_ty_t deps =
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      run_compilation_text cookie ctxt (build_compilation_text ctxt some_target program deps) vs_ty_t args;
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  in Code_Thingol.dynamic_value ctxt (Exn.map_res o postproc) comp t end;
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fun dynamic_value_strict cookie ctxt some_target postproc t args =
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  Exn.release (dynamic_value_exn cookie ctxt some_target postproc t args);
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fun dynamic_value cookie ctxt some_target postproc t args =
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  partiality_as_none (dynamic_value_exn cookie ctxt some_target postproc t args);
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(* evaluation for truth or nothing *)
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structure Truth_Result = Proof_Data
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(
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  type T = unit -> truth;
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  val empty: T = fn () => raise Fail "Truth_Result";
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  fun init _ = empty;
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);
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val put_truth = Truth_Result.put;
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val truth_cookie = (Truth_Result.get, put_truth, prefix_this "put_truth");
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local
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val reject_vars = fn ctxt => tap (reject_vars ctxt o Thm.term_of);
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fun check_holds ctxt evaluator vs_t ct =
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  let
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    val t = Thm.term_of ct;
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    val _ = if fastype_of t <> propT
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      then error ("Not a proposition: " ^ Syntax.string_of_term ctxt t)
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      else ();
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    val iff = Thm.cterm_of ctxt (Term.Const (@{const_name Pure.eq}, propT --> propT --> propT));
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    val result = case partiality_as_none (run_compilation_text truth_cookie ctxt evaluator vs_t [])
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     of SOME Holds => true
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      | _ => false;
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  in
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    Thm.mk_binop iff ct (if result then @{cprop "PROP Code_Generator.holds"} else ct)
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  end;
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val (_, raw_check_holds_oracle) = Context.>>> (Context.map_theory_result
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  (Thm.add_oracle (@{binding holds_by_evaluation},
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  fn (ctxt, evaluator, vs_t, ct) => check_holds ctxt evaluator vs_t ct)));
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fun check_holds_oracle ctxt evaluator vs_ty_t ct =
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  raw_check_holds_oracle (ctxt, evaluator, vs_ty_t, ct);
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in
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fun dynamic_holds_conv ctxt = Code_Thingol.dynamic_conv ctxt
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  (fn program => fn vs_t => fn deps =>
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    check_holds_oracle ctxt (build_compilation_text ctxt NONE program deps) vs_t)
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      o reject_vars ctxt;
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end; (*local*)
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(** generator for computations -- partial implementations of the universal morphism from Isabelle to ML terms **)
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(* auxiliary *)
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val generated_computationN = "Generated_Computation";
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(* possible type signatures of constants *)
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fun typ_signatures' T =
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  let
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    val (Ts, T') = strip_type T;
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  in map_range (fn n => (drop n Ts ---> T', take n Ts)) (length Ts + 1) end;
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fun typ_signatures cTs =
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  let
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    fun add (c, T) =
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      fold (fn (T, Ts) => Typtab.map_default (T, []) (cons (c, Ts)))
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        (typ_signatures' T);
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  in
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    Typtab.empty
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    |> fold add cTs
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    |> Typtab.lookup_list
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  end;
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(* name mangling *)
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local
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fun tycos_of (Type (tyco, Ts)) = maps tycos_of Ts @ [tyco]
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  | tycos_of _ = [];
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val ml_name_of = Name.desymbolize NONE o Long_Name.base_name;
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in
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val covered_constsN = "covered_consts";
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fun of_term_for_typ Ts =
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  let
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    val names = Ts
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      |> map (suffix "_of_term" o space_implode "_" o map ml_name_of o tycos_of)
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      |> Name.variant_list [];
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  in the o AList.lookup (op =) (Ts ~~ names) end;
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fun eval_for_const ctxt cTs =
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  let
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    fun symbol_list (c, T) = c :: maps tycos_of (Sign.const_typargs (Proof_Context.theory_of ctxt) (c, T))
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    val names = cTs
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      |> map (prefix "eval_" o space_implode "_" o map ml_name_of o symbol_list)
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      |> Name.variant_list [];
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  in the o AList.lookup (op =) (cTs ~~ names) end;
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end;
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(* checks for input terms *)
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fun monomorphic T = fold_atyps ((K o K) false) T true;
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fun check_typ ctxt T t =
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  Syntax.check_term ctxt (Type.constraint T t);
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fun check_computation_input ctxt cTs t =
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  let
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    fun check t = check_comb (strip_comb t)
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    and check_comb (t as Abs _, _) =
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          error ("Bad term, contains abstraction: " ^ Syntax.string_of_term ctxt t)
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      | check_comb (t as Const (cT as (c, T)), ts) =
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          let
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            val _ = if not (member (op =) cTs cT)
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              then error ("Bad term, computation cannot proceed on constant " ^ Syntax.string_of_term ctxt t)
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              else ();
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            val _ = if not (monomorphic T)
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              then error ("Bad term, contains polymorphic constant " ^ Syntax.string_of_term ctxt t)
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              else ();
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            val _ = map check ts;
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          in () end;
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    val _ = check t;
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  in t end;
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(* code generation for of the universal morphism *)
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val print_const = ML_Syntax.print_pair ML_Syntax.print_string ML_Syntax.print_typ;
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fun print_of_term_funs { typ_signatures_for, eval_for_const, of_term_for_typ } Ts =
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  let
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    val var_names = map_range (fn n => "t" ^ string_of_int (n + 1));
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    fun print_lhs c xs = "Const (" ^ quote c ^ ", _)"
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      |> fold (fn x => fn s => s ^ " $ " ^ x) xs
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      |> enclose "(" ")";
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    fun print_rhs c Ts T xs = eval_for_const (c, Ts ---> T)
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      |> fold2 (fn T' => fn x => fn s =>
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         s ^ (" (" ^ of_term_for_typ T' ^ " " ^ x ^ ")")) Ts xs
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    fun print_eq T (c, Ts) =
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      let
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        val xs = var_names (length Ts);
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      in print_lhs c xs ^ " = " ^ print_rhs c Ts T xs end;
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    fun print_eqs T =
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      let
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        val typ_signs = typ_signatures_for T;
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        val name = of_term_for_typ T;
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      in
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        map (print_eq T) typ_signs
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        |> map (prefix (name ^ " "))
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        |> space_implode "\n  | "
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      end;
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  in
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    map print_eqs Ts
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    |> space_implode "\nand "
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    |> prefix "fun "
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  end;
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fun print_computation_code ctxt compiled_value [] requested_Ts =
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      if null requested_Ts then ("", [])
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      else error ("No equation available for requested type "
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        ^ Syntax.string_of_typ ctxt (hd requested_Ts))
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  | print_computation_code ctxt compiled_value cTs requested_Ts =
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      let
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        val proper_cTs = map_filter I cTs;
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        val typ_signatures_for = typ_signatures proper_cTs;
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        fun add_typ T Ts =
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          if member (op =) Ts T
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          then Ts
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          else case typ_signatures_for T of
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            [] => error ("No equation available for requested type "
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              ^ Syntax.string_of_typ ctxt T)
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          | typ_signs =>
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              Ts
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              |> cons T
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              |> fold (fold add_typ o snd) typ_signs;
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        val required_Ts = fold add_typ requested_Ts [];
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        val of_term_for_typ' = of_term_for_typ required_Ts;
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        val eval_for_const' = eval_for_const ctxt proper_cTs;
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        val eval_for_const'' = the_default "_" o Option.map eval_for_const';
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        val eval_tuple = enclose "(" ")" (commas (map eval_for_const' proper_cTs));
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        fun mk_abs s = "fn " ^ s ^ " => ";
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        val eval_abs = space_implode ""
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          (map (mk_abs o eval_for_const'') cTs);
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        val of_term_code = print_of_term_funs {
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          typ_signatures_for = typ_signatures_for,
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          eval_for_const = eval_for_const',
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          of_term_for_typ = of_term_for_typ' } required_Ts;
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        val of_term_names = map (Long_Name.append generated_computationN
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          o of_term_for_typ') requested_Ts;
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      in
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        cat_lines [
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          "structure " ^ generated_computationN ^ " =",
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          "struct",
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          "",
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          "val " ^ covered_constsN ^ " = " ^ ML_Syntax.print_list print_const proper_cTs ^ ";",
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          "",
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          "val " ^ eval_tuple ^ " = " ^ compiled_value ^ " ()",
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          "  (" ^ eval_abs,
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          "    " ^ eval_tuple ^ ");",
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          "",
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          of_term_code,
haftmann@64959
   329
          "",
haftmann@64959
   330
          "end"
haftmann@64959
   331
        ] |> rpair of_term_names
haftmann@64959
   332
      end;
haftmann@64940
   333
haftmann@64993
   334
haftmann@64993
   335
(* dedicated preprocessor for computations *)
haftmann@64993
   336
haftmann@64993
   337
structure Computation_Preproc_Data = Theory_Data
haftmann@64993
   338
(
haftmann@64993
   339
  type T = thm list;
haftmann@64993
   340
  val empty = [];
haftmann@64993
   341
  val extend = I;
haftmann@64993
   342
  val merge = Library.merge Thm.eq_thm_prop;
haftmann@64993
   343
);
haftmann@64993
   344
haftmann@64993
   345
local
haftmann@64993
   346
haftmann@64993
   347
fun add thm thy =
haftmann@64993
   348
  let
haftmann@64993
   349
    val thms = Simplifier.mksimps (Proof_Context.init_global thy) thm;
haftmann@64993
   350
  in
haftmann@64993
   351
    thy
wenzelm@67630
   352
    |> Computation_Preproc_Data.map (fold (insert Thm.eq_thm_prop o Thm.trim_context) thms)
haftmann@64993
   353
  end;
haftmann@64993
   354
wenzelm@67630
   355
fun get ctxt =
wenzelm@67630
   356
  Computation_Preproc_Data.get (Proof_Context.theory_of ctxt)
wenzelm@67630
   357
  |> map (Thm.transfer (Proof_Context.theory_of ctxt))
haftmann@64993
   358
haftmann@64993
   359
in
haftmann@64993
   360
haftmann@64995
   361
fun preprocess_conv { ctxt } = 
haftmann@64995
   362
  let
haftmann@64995
   363
    val rules = get ctxt;
haftmann@64995
   364
  in fn ctxt' => Raw_Simplifier.rewrite ctxt' false rules end;
haftmann@64993
   365
haftmann@64995
   366
fun preprocess_term { ctxt } =
haftmann@64995
   367
  let
haftmann@64995
   368
    val rules = map (Logic.dest_equals o Thm.plain_prop_of) (get ctxt);
haftmann@64995
   369
  in fn ctxt' => Pattern.rewrite_term (Proof_Context.theory_of ctxt') rules [] end;
haftmann@64993
   370
haftmann@64993
   371
val _ = Theory.setup
haftmann@64993
   372
  (Attrib.setup @{binding code_computation_unfold}
haftmann@64993
   373
    (Scan.succeed (Thm.declaration_attribute (fn thm => Context.mapping (add thm) I)))
haftmann@64993
   374
    "preprocessing equations for computation");
haftmann@64993
   375
haftmann@64993
   376
end;
haftmann@64993
   377
haftmann@64993
   378
haftmann@64993
   379
(* mounting computations *)
haftmann@64993
   380
haftmann@64991
   381
fun prechecked_computation T raw_computation ctxt =
haftmann@64987
   382
  check_typ ctxt T
haftmann@64987
   383
  #> reject_vars ctxt
haftmann@64991
   384
  #> raw_computation ctxt;
haftmann@64991
   385
haftmann@64991
   386
fun prechecked_conv T raw_conv ctxt =
haftmann@64991
   387
  tap (check_typ ctxt T o reject_vars ctxt o Thm.term_of)
haftmann@64991
   388
  #> raw_conv ctxt;
haftmann@64991
   389
haftmann@64991
   390
fun checked_computation cTs raw_computation ctxt =
haftmann@64991
   391
  check_computation_input ctxt cTs
haftmann@65005
   392
  #> Exn.interruptible_capture raw_computation
haftmann@64988
   393
  #> partiality_as_none;
haftmann@64987
   394
haftmann@64957
   395
fun mount_computation ctxt cTs T raw_computation lift_postproc =
haftmann@64993
   396
  let
haftmann@64995
   397
    val preprocess = preprocess_term { ctxt = ctxt };
haftmann@64993
   398
    val computation = prechecked_computation T (Code_Preproc.static_value
haftmann@64993
   399
      { ctxt = ctxt, lift_postproc = lift_postproc, consts = [] }
haftmann@64993
   400
      (K (checked_computation cTs raw_computation)));
haftmann@64995
   401
  in fn ctxt' => preprocess ctxt' #> computation ctxt' end;
haftmann@64943
   402
haftmann@64989
   403
fun mount_computation_conv ctxt cTs T raw_computation conv =
haftmann@64993
   404
  let
haftmann@64995
   405
    val preprocess = preprocess_conv { ctxt = ctxt };
haftmann@64993
   406
    val computation_conv = prechecked_conv T (Code_Preproc.static_conv
haftmann@64993
   407
      { ctxt = ctxt, consts = [] }
haftmann@64993
   408
      (K (fn ctxt' => fn t =>
haftmann@64993
   409
        case checked_computation cTs raw_computation ctxt' t of
haftmann@65043
   410
          SOME x => conv ctxt' x
haftmann@64993
   411
        | NONE => Conv.all_conv)));
haftmann@64995
   412
  in fn ctxt' => preprocess ctxt' then_conv computation_conv ctxt' end;
haftmann@64989
   413
haftmann@64989
   414
local
haftmann@64989
   415
haftmann@64989
   416
fun holds ct = Thm.mk_binop @{cterm "Pure.eq :: prop \<Rightarrow> prop \<Rightarrow> prop"}
haftmann@64989
   417
  ct @{cprop "PROP Code_Generator.holds"};
haftmann@64989
   418
haftmann@64989
   419
val (_, holds_oracle) = Context.>>> (Context.map_theory_result
haftmann@64989
   420
  (Thm.add_oracle (@{binding holds}, holds)));
haftmann@64989
   421
haftmann@64989
   422
in
haftmann@64989
   423
haftmann@64989
   424
fun mount_computation_check ctxt cTs raw_computation =
haftmann@64989
   425
  mount_computation_conv ctxt cTs @{typ prop} raw_computation
haftmann@65043
   426
    ((K o K) holds_oracle);
haftmann@64989
   427
haftmann@64989
   428
end;
haftmann@64989
   429
haftmann@64959
   430
haftmann@64959
   431
(** variants of universal runtime code generation **)
haftmann@64940
   432
haftmann@64959
   433
(*FIXME consolidate variants*)
haftmann@64940
   434
haftmann@64959
   435
fun runtime_code'' ctxt module_name program tycos consts =
haftmann@33992
   436
  let
haftmann@55757
   437
    val thy = Proof_Context.theory_of ctxt;
haftmann@48568
   438
    val (ml_modules, target_names) =
haftmann@55757
   439
      Code_Target.produce_code_for ctxt
haftmann@55683
   440
        target NONE module_name [] program false (map Constant consts @ map Type_Constructor tycos);
haftmann@48568
   441
    val ml_code = space_implode "\n\n" (map snd ml_modules);
haftmann@55147
   442
    val (consts', tycos') = chop (length consts) target_names;
wenzelm@42359
   443
    val consts_map = map2 (fn const =>
wenzelm@42359
   444
      fn NONE =>
wenzelm@42359
   445
          error ("Constant " ^ (quote o Code.string_of_const thy) const ^
wenzelm@42359
   446
            "\nhas a user-defined serialization")
haftmann@55147
   447
       | SOME const' => (const, const')) consts consts'
wenzelm@42359
   448
    val tycos_map = map2 (fn tyco =>
wenzelm@42359
   449
      fn NONE =>
wenzelm@55304
   450
          error ("Type " ^ quote (Proof_Context.markup_type ctxt tyco) ^
wenzelm@42359
   451
            "\nhas a user-defined serialization")
haftmann@55147
   452
        | SOME tyco' => (tyco, tyco')) tycos tycos';
haftmann@34028
   453
  in (ml_code, (tycos_map, consts_map)) end;
haftmann@28054
   454
haftmann@64959
   455
fun runtime_code' ctxt some_module_name named_tycos named_consts computation_Ts program evals vs_ty_evals deps =
haftmann@64959
   456
  let
haftmann@64959
   457
    val thy = Proof_Context.theory_of ctxt;
haftmann@64959
   458
    fun the_const (Const cT) = cT
haftmann@64959
   459
      | the_const t = error ("No constant after preprocessing: " ^ Syntax.string_of_term ctxt t)
haftmann@64959
   460
    val raw_computation_cTs = case evals of
haftmann@64959
   461
        Abs (_, _, t) => (map the_const o snd o strip_comb) t
haftmann@64959
   462
      | _ => error ("Bad term after preprocessing: " ^ Syntax.string_of_term ctxt evals);
haftmann@64959
   463
    val computation_cTs = fold_rev (fn cT => fn cTs =>
haftmann@64959
   464
      (if member (op =) cTs (SOME cT) then NONE else SOME cT) :: cTs) raw_computation_cTs [];
haftmann@64959
   465
    val consts' = fold (fn NONE => I | SOME (c, _) => insert (op =) c)
haftmann@64959
   466
      computation_cTs named_consts;
haftmann@64959
   467
    val program' = Code_Thingol.consts_program ctxt consts';
haftmann@64959
   468
      (*FIXME insufficient interfaces require double invocation of code generator*)
haftmann@65034
   469
    val program'' = Code_Symbol.Graph.merge (K true) (program, program');
haftmann@64959
   470
    val ((ml_modules, compiled_value), deresolve) =
haftmann@65034
   471
      Code_Target.compilation_text' ctxt target some_module_name program''
haftmann@64959
   472
        (map Code_Symbol.Type_Constructor named_tycos @ map Code_Symbol.Constant consts' @ deps) true vs_ty_evals;
haftmann@64959
   473
        (*FIXME constrain signature*)
haftmann@67328
   474
    fun deresolve_tyco tyco = case (deresolve o Code_Symbol.Type_Constructor) tyco of
haftmann@67328
   475
          NONE => error ("Type " ^ quote (Proof_Context.markup_type ctxt tyco) ^
haftmann@67328
   476
            "\nhas a user-defined serialization")
haftmann@67328
   477
        | SOME c' => c';
haftmann@64959
   478
    fun deresolve_const c = case (deresolve o Code_Symbol.Constant) c of
haftmann@64959
   479
          NONE => error ("Constant " ^ (quote o Code.string_of_const thy) c ^
haftmann@64959
   480
            "\nhas a user-defined serialization")
haftmann@64959
   481
        | SOME c' => c';
haftmann@67328
   482
    val tyco_names =  map deresolve_tyco named_tycos;
haftmann@64959
   483
    val const_names = map deresolve_const named_consts;
haftmann@64959
   484
    val generated_code = space_implode "\n\n" (map snd ml_modules);
haftmann@64959
   485
    val (of_term_code, of_term_names) =
haftmann@64959
   486
      print_computation_code ctxt compiled_value computation_cTs computation_Ts;
haftmann@64959
   487
    val compiled_computation = generated_code ^ "\n" ^ of_term_code;
haftmann@64959
   488
  in
haftmann@64959
   489
    compiled_computation
haftmann@64959
   490
    |> rpair { tyco_map = named_tycos ~~ tyco_names,
haftmann@64959
   491
      const_map = named_consts ~~ const_names,
haftmann@64959
   492
      of_term_map = computation_Ts ~~ of_term_names }
haftmann@64959
   493
  end;
haftmann@64959
   494
haftmann@64959
   495
fun funs_of_maps { tyco_map, const_map, of_term_map } =
haftmann@64959
   496
  { name_for_tyco = the o AList.lookup (op =) tyco_map,
haftmann@64959
   497
    name_for_const = the o AList.lookup (op =) const_map,
haftmann@64959
   498
    of_term_for_typ = the o AList.lookup (op =) of_term_map };
haftmann@64959
   499
haftmann@64959
   500
fun runtime_code ctxt some_module_name named_tycos named_consts computation_Ts program evals vs_ty_evals deps =
haftmann@64959
   501
  runtime_code' ctxt some_module_name named_tycos named_consts computation_Ts program evals vs_ty_evals deps
haftmann@64959
   502
  ||> funs_of_maps;
haftmann@64959
   503
haftmann@64959
   504
haftmann@64959
   505
(** code and computation antiquotations **)
haftmann@64959
   506
haftmann@64989
   507
local
haftmann@64959
   508
haftmann@64989
   509
val mount_computationN = prefix_this "mount_computation";
haftmann@64989
   510
val mount_computation_convN = prefix_this "mount_computation_conv";
haftmann@64989
   511
val mount_computation_checkN = prefix_this "mount_computation_check";
haftmann@28054
   512
haftmann@38930
   513
structure Code_Antiq_Data = Proof_Data
haftmann@28054
   514
(
haftmann@64955
   515
  type T = { named_consts: string list,
haftmann@64959
   516
    computation_Ts: typ list, computation_cTs: (string * typ) list,
haftmann@64959
   517
    position_index: int,
haftmann@64959
   518
    generated_code: (string * {
haftmann@64959
   519
      name_for_tyco: string -> string,
haftmann@64959
   520
      name_for_const: string -> string,
haftmann@64959
   521
      of_term_for_typ: typ -> string
haftmann@64959
   522
    }) lazy
haftmann@64955
   523
  };
haftmann@64955
   524
  val empty: T = { named_consts = [],
haftmann@64959
   525
    computation_Ts = [], computation_cTs = [],
haftmann@64959
   526
    position_index = 0,
haftmann@64959
   527
    generated_code = Lazy.lazy (fn () => raise Fail "empty")
haftmann@64955
   528
  };
wenzelm@59150
   529
  fun init _ = empty;
haftmann@28054
   530
);
haftmann@28054
   531
haftmann@64959
   532
val current_position_index = #position_index o Code_Antiq_Data.get;
haftmann@64955
   533
haftmann@64959
   534
fun register { named_consts, computation_Ts, computation_cTs } ctxt =
haftmann@64955
   535
  let
haftmann@64959
   536
    val data = Code_Antiq_Data.get ctxt;
haftmann@64959
   537
    val named_consts' = union (op =) named_consts (#named_consts data);
haftmann@64959
   538
    val computation_Ts' = union (op =) computation_Ts (#computation_Ts data);
haftmann@64959
   539
    val computation_cTs' = union (op =) computation_cTs (#computation_cTs data);
haftmann@64959
   540
    val position_index' = #position_index data + 1;
haftmann@64959
   541
    fun generated_code' () =
haftmann@64959
   542
      let
haftmann@64959
   543
        val evals = Abs ("eval", map snd computation_cTs' --->
haftmann@64993
   544
          TFree (Name.aT, []), list_comb (Bound 0, map Const computation_cTs'))
haftmann@64995
   545
          |> preprocess_term { ctxt = ctxt } ctxt
haftmann@64959
   546
      in Code_Thingol.dynamic_value ctxt
haftmann@64959
   547
        (K I) (runtime_code ctxt NONE [] named_consts' computation_Ts') evals
haftmann@64959
   548
      end;
haftmann@64955
   549
  in
haftmann@64955
   550
    ctxt
haftmann@64955
   551
    |> Code_Antiq_Data.put { 
haftmann@64959
   552
        named_consts = named_consts',
haftmann@64959
   553
        computation_Ts = computation_Ts',
haftmann@64959
   554
        computation_cTs = computation_cTs',
haftmann@64959
   555
        position_index = position_index',
haftmann@64959
   556
        generated_code = Lazy.lazy generated_code'
haftmann@64955
   557
      }
haftmann@64955
   558
  end;
haftmann@30962
   559
haftmann@64959
   560
fun register_const const =
haftmann@64959
   561
  register { named_consts = [const],
haftmann@64959
   562
    computation_Ts = [],
haftmann@64959
   563
    computation_cTs = [] };
haftmann@64959
   564
haftmann@64959
   565
fun register_computation cTs T =
haftmann@64959
   566
  register { named_consts = [],
haftmann@64959
   567
    computation_Ts = [T],
haftmann@64959
   568
    computation_cTs = cTs };
haftmann@64959
   569
haftmann@64959
   570
fun print body_code_for ctxt ctxt' =
haftmann@30962
   571
  let
haftmann@64959
   572
    val position_index = current_position_index ctxt;
haftmann@64959
   573
    val (code, name_ofs) = (Lazy.force o #generated_code o Code_Antiq_Data.get) ctxt';
haftmann@64959
   574
    val context_code = if position_index = 0 then code else "";
haftmann@64989
   575
    val body_code = body_code_for name_ofs (ML_Context.struct_name ctxt');
haftmann@64958
   576
  in (context_code, body_code) end;
haftmann@28054
   577
haftmann@64959
   578
fun print_code ctxt const =
haftmann@64989
   579
  print (fn { name_for_const, ... } => fn prfx =>
haftmann@64959
   580
    Long_Name.append prfx (name_for_const const)) ctxt;
haftmann@64959
   581
haftmann@64989
   582
fun print_computation kind ctxt T =
haftmann@64989
   583
  print (fn { of_term_for_typ, ... } => fn prfx =>
haftmann@67338
   584
    enclose "(" ")" (space_implode " " [
haftmann@64989
   585
      kind,
haftmann@64959
   586
      "(Context.proof_of (Context.the_generic_context ()))",
haftmann@64959
   587
      Long_Name.implode [prfx, generated_computationN, covered_constsN],
haftmann@64959
   588
      (ML_Syntax.atomic o ML_Syntax.print_typ) T,
haftmann@64959
   589
      Long_Name.append prfx (of_term_for_typ T)
haftmann@67338
   590
    ])) ctxt;
haftmann@64959
   591
haftmann@64989
   592
fun print_computation_check ctxt =
haftmann@64989
   593
  print (fn { of_term_for_typ, ... } => fn prfx =>
haftmann@64989
   594
    space_implode " " [
haftmann@64989
   595
      mount_computation_checkN,
haftmann@64989
   596
      "(Context.proof_of (Context.the_generic_context ()))",
haftmann@64989
   597
      Long_Name.implode [prfx, generated_computationN, covered_constsN],
haftmann@64989
   598
      Long_Name.append prfx (of_term_for_typ @{typ prop})
haftmann@64989
   599
    ]) ctxt;
haftmann@64989
   600
haftmann@64992
   601
haftmann@64992
   602
fun add_all_constrs ctxt (dT as Type (tyco, Ts)) =
haftmann@67327
   603
  case Code.get_type (Proof_Context.theory_of ctxt) tyco of
haftmann@67327
   604
    ((vs, constrs), false) =>
haftmann@67327
   605
      let
haftmann@67327
   606
        val subst_TFree = the o AList.lookup (op =) (map fst vs ~~ Ts);
haftmann@67327
   607
        val cs = map (fn (c, (_, Ts')) =>
haftmann@67327
   608
          (c, (map o map_atyps) (fn TFree (v, _) => subst_TFree v) Ts'
haftmann@67327
   609
            ---> dT)) constrs;
haftmann@67327
   610
      in
haftmann@67327
   611
        union (op =) cs
haftmann@67327
   612
        #> fold (add_all_constrs ctxt) Ts
haftmann@67327
   613
      end
haftmann@67327
   614
  | (_, true) => I;
haftmann@64992
   615
haftmann@64992
   616
fun prep_spec ctxt (raw_ts, raw_dTs) =
haftmann@64989
   617
  let
haftmann@64989
   618
    val ts = map (Syntax.check_term ctxt) raw_ts;
haftmann@64992
   619
    val dTs = map (Syntax.check_typ ctxt) raw_dTs;
haftmann@64989
   620
  in
haftmann@64992
   621
    []
haftmann@64992
   622
    |> (fold o fold_aterms)
haftmann@64989
   623
      (fn (t as Const (cT as (_, T))) =>
haftmann@64989
   624
        if not (monomorphic T) then error ("Polymorphic constant: " ^ Syntax.string_of_term ctxt t)
haftmann@64992
   625
        else insert (op =) cT | _ => I) ts
haftmann@64992
   626
    |> fold (fn dT =>
haftmann@64992
   627
        if not (monomorphic dT) then error ("Polymorphic datatype: " ^ Syntax.string_of_typ ctxt dT)
haftmann@64992
   628
        else add_all_constrs ctxt dT) dTs
haftmann@64989
   629
  end;
haftmann@64989
   630
haftmann@28054
   631
in
haftmann@28054
   632
wenzelm@56069
   633
fun ml_code_antiq raw_const ctxt =
haftmann@28054
   634
  let
wenzelm@53169
   635
    val thy = Proof_Context.theory_of ctxt;
wenzelm@53169
   636
    val const = Code.check_const thy raw_const;
haftmann@64959
   637
  in (print_code ctxt const, register_const const ctxt) end;
haftmann@64959
   638
haftmann@64992
   639
fun gen_ml_computation_antiq kind (raw_T, raw_spec) ctxt =
haftmann@64959
   640
  let
haftmann@64992
   641
    val cTs = prep_spec ctxt raw_spec;
haftmann@64959
   642
    val T = Syntax.check_typ ctxt raw_T;
haftmann@64959
   643
    val _ = if not (monomorphic T)
haftmann@64959
   644
      then error ("Polymorphic type: " ^ Syntax.string_of_typ ctxt T)
haftmann@64959
   645
      else ();
haftmann@64989
   646
  in (print_computation kind ctxt T, register_computation cTs T ctxt) end;
haftmann@64989
   647
haftmann@64989
   648
val ml_computation_antiq = gen_ml_computation_antiq mount_computationN;
haftmann@64989
   649
haftmann@64989
   650
val ml_computation_conv_antiq = gen_ml_computation_antiq mount_computation_convN;
haftmann@64989
   651
haftmann@64992
   652
fun ml_computation_check_antiq raw_spec ctxt =
haftmann@64989
   653
  let
haftmann@64992
   654
    val cTs = insert (op =) (dest_Const @{const holds}) (prep_spec ctxt raw_spec);
haftmann@64989
   655
  in (print_computation_check ctxt, register_computation cTs @{typ prop} ctxt) end;
haftmann@30962
   656
haftmann@28054
   657
end; (*local*)
haftmann@28054
   658
haftmann@28054
   659
haftmann@58558
   660
(** reflection support **)
haftmann@36470
   661
haftmann@40421
   662
fun check_datatype thy tyco some_consts =
haftmann@36470
   663
  let
haftmann@63174
   664
    val declared_constrs = (map fst o snd o fst o Code.get_type thy) tyco;
haftmann@63174
   665
    val constrs = case some_consts
haftmann@63174
   666
     of SOME [] => []
haftmann@63174
   667
      | SOME consts =>
haftmann@40421
   668
          let
haftmann@63174
   669
            val missing_constrs = subtract (op =) consts declared_constrs;
haftmann@40421
   670
            val _ = if null missing_constrs then []
wenzelm@45430
   671
              else error ("Missing constructor(s) " ^ commas_quote missing_constrs
haftmann@40421
   672
                ^ " for datatype " ^ quote tyco);
haftmann@63174
   673
            val false_constrs = subtract (op =) declared_constrs consts;
haftmann@40421
   674
            val _ = if null false_constrs then []
wenzelm@45430
   675
              else error ("Non-constructor(s) " ^ commas_quote false_constrs
haftmann@40421
   676
                ^ " for datatype " ^ quote tyco)
haftmann@63174
   677
          in consts end
haftmann@63174
   678
      | NONE => declared_constrs;
haftmann@40421
   679
  in (tyco, constrs) end;
haftmann@36470
   680
haftmann@36470
   681
fun add_eval_tyco (tyco, tyco') thy =
haftmann@36470
   682
  let
haftmann@36470
   683
    val k = Sign.arity_number thy tyco;
haftmann@40421
   684
    fun pr pr' _ [] = tyco'
haftmann@40421
   685
      | pr pr' _ [ty] =
haftmann@36470
   686
          Code_Printer.concat [pr' Code_Printer.BR ty, tyco']
haftmann@40421
   687
      | pr pr' _ tys =
haftmann@36470
   688
          Code_Printer.concat [Code_Printer.enum "," "(" ")" (map (pr' Code_Printer.BR) tys), tyco']
haftmann@36470
   689
  in
haftmann@36470
   690
    thy
haftmann@55150
   691
    |> Code_Target.set_printings (Type_Constructor (tyco, [(target, SOME (k, pr))]))
haftmann@36470
   692
  end;
haftmann@36470
   693
haftmann@36514
   694
fun add_eval_constr (const, const') thy =
haftmann@36514
   695
  let
haftmann@36514
   696
    val k = Code.args_number thy const;
haftmann@36514
   697
    fun pr pr' fxy ts = Code_Printer.brackify fxy
haftmann@38922
   698
      (const' :: the_list (Code_Printer.tuplify pr' Code_Printer.BR (map fst ts)));
haftmann@36514
   699
  in
haftmann@36514
   700
    thy
haftmann@55150
   701
    |> Code_Target.set_printings (Constant (const,
haftmann@52435
   702
      [(target, SOME (Code_Printer.simple_const_syntax (k, pr)))]))
haftmann@36514
   703
  end;
haftmann@36514
   704
haftmann@55150
   705
fun add_eval_const (const, const') = Code_Target.set_printings (Constant
haftmann@52435
   706
  (const, [(target, SOME (Code_Printer.simple_const_syntax (0, (K o K o K) const')))]));
haftmann@36470
   707
haftmann@39912
   708
fun process_reflection (code, (tyco_map, (constr_map, const_map))) module_name NONE thy =
haftmann@38935
   709
      thy
haftmann@38935
   710
      |> Code_Target.add_reserved target module_name
haftmann@63163
   711
      |> Context.theory_map (compile_ML true code)
haftmann@38935
   712
      |> fold (add_eval_tyco o apsnd Code_Printer.str) tyco_map
haftmann@38935
   713
      |> fold (add_eval_constr o apsnd Code_Printer.str) constr_map
haftmann@38935
   714
      |> fold (add_eval_const o apsnd Code_Printer.str) const_map
haftmann@39912
   715
  | process_reflection (code, _) _ (SOME file_name) thy =
haftmann@36470
   716
      let
wenzelm@37950
   717
        val preamble =
wenzelm@46737
   718
          "(* Generated from " ^
wenzelm@56208
   719
            Path.implode (Resources.thy_path (Path.basic (Context.theory_name thy))) ^
wenzelm@46737
   720
          "; DO NOT EDIT! *)";
haftmann@39912
   721
        val _ = File.write (Path.explode file_name) (preamble ^ "\n\n" ^ code);
haftmann@36470
   722
      in
haftmann@36470
   723
        thy
haftmann@36470
   724
      end;
haftmann@36470
   725
haftmann@36470
   726
fun gen_code_reflect prep_type prep_const raw_datatypes raw_functions module_name some_file thy  =
haftmann@36470
   727
  let
haftmann@55757
   728
    val ctxt = Proof_Context.init_global thy;
haftmann@36470
   729
    val datatypes = map (fn (raw_tyco, raw_cos) =>
haftmann@55757
   730
      (prep_type ctxt raw_tyco, (Option.map o map) (prep_const thy) raw_cos)) raw_datatypes;
haftmann@40421
   731
    val (tycos, constrs) = map_split (uncurry (check_datatype thy)) datatypes
haftmann@40421
   732
      |> apsnd flat;
haftmann@36470
   733
    val functions = map (prep_const thy) raw_functions;
haftmann@58557
   734
    val consts = constrs @ functions;
haftmann@63159
   735
    val program = Code_Thingol.consts_program ctxt consts;
haftmann@64959
   736
    val result = runtime_code'' ctxt module_name program tycos consts
haftmann@36514
   737
      |> (apsnd o apsnd) (chop (length constrs));
haftmann@36470
   738
  in
haftmann@36470
   739
    thy
haftmann@39485
   740
    |> process_reflection result module_name some_file
haftmann@36470
   741
  end;
haftmann@36470
   742
haftmann@39422
   743
val code_reflect = gen_code_reflect Code_Target.cert_tyco (K I);
haftmann@36470
   744
val code_reflect_cmd = gen_code_reflect Code_Target.read_tyco Code.read_const;
haftmann@36470
   745
haftmann@36470
   746
haftmann@28054
   747
(** Isar setup **)
haftmann@28054
   748
haftmann@64992
   749
local
haftmann@64992
   750
haftmann@64992
   751
val parse_consts_spec =
haftmann@64992
   752
  Scan.optional (Scan.lift (Args.$$$ "terms" -- Args.colon) |-- Scan.repeat1 Args.term) []
haftmann@64992
   753
  -- Scan.optional (Scan.lift (Args.$$$ "datatypes"  -- Args.colon) |-- Scan.repeat1 Args.typ) [];
haftmann@64992
   754
haftmann@64992
   755
in
haftmann@64992
   756
haftmann@64993
   757
val _ = Theory.setup
haftmann@64993
   758
  (ML_Antiquotation.declaration @{binding code}
haftmann@64993
   759
    Args.term (K ml_code_antiq)
haftmann@64993
   760
  #> ML_Antiquotation.declaration @{binding computation}
haftmann@64993
   761
    (Args.typ -- parse_consts_spec) (K ml_computation_antiq)
haftmann@64993
   762
  #> ML_Antiquotation.declaration @{binding computation_conv}
haftmann@64993
   763
    (Args.typ -- parse_consts_spec) (K ml_computation_conv_antiq)
haftmann@64993
   764
  #> ML_Antiquotation.declaration @{binding computation_check}
haftmann@64993
   765
    parse_consts_spec (K ml_computation_check_antiq));
haftmann@64989
   766
haftmann@64992
   767
end;
haftmann@64992
   768
haftmann@36470
   769
local
haftmann@36470
   770
wenzelm@36960
   771
val parse_datatype =
haftmann@63174
   772
  Parse.name -- Scan.optional (@{keyword "="} |--
haftmann@40711
   773
    (((Parse.sym_ident || Parse.string) >> (fn "_" => NONE | _ => Scan.fail ()))
haftmann@63174
   774
    || ((Parse.term ::: (Scan.repeat (@{keyword "|"} |-- Parse.term))) >> SOME))) (SOME []);
haftmann@36470
   775
haftmann@36470
   776
in
haftmann@36470
   777
haftmann@36470
   778
val _ =
wenzelm@59936
   779
  Outer_Syntax.command @{command_keyword code_reflect}
wenzelm@46961
   780
    "enrich runtime environment with generated code"
haftmann@63174
   781
    (Parse.name -- Scan.optional (@{keyword "datatypes"} |-- Parse.!!! (parse_datatype
wenzelm@46949
   782
      ::: Scan.repeat (@{keyword "and"} |-- parse_datatype))) []
haftmann@52434
   783
    -- Scan.optional (@{keyword "functions"} |-- Parse.!!!  (Scan.repeat1 Parse.name)) []
haftmann@52434
   784
    -- Scan.option (@{keyword "file"} |-- Parse.!!! Parse.name)
wenzelm@46961
   785
    >> (fn (((module_name, raw_datatypes), raw_functions), some_file) => Toplevel.theory
wenzelm@46961
   786
      (code_reflect_cmd raw_datatypes raw_functions module_name some_file)));
haftmann@36470
   787
haftmann@36470
   788
end; (*local*)
haftmann@36470
   789
haftmann@39816
   790
haftmann@39816
   791
(** using external SML files as substitute for proper definitions -- only for polyml!  **)
haftmann@39816
   792
haftmann@39816
   793
local
haftmann@39816
   794
wenzelm@39820
   795
structure Loaded_Values = Theory_Data
wenzelm@39820
   796
(
haftmann@39816
   797
  type T = string list
haftmann@39816
   798
  val empty = []
wenzelm@41472
   799
  val extend = I
wenzelm@39820
   800
  fun merge data : T = Library.merge (op =) data
haftmann@39816
   801
);
haftmann@39816
   802
haftmann@39816
   803
fun notify_val (string, value) = 
haftmann@39816
   804
  let
wenzelm@62495
   805
    val _ = #enterVal ML_Env.name_space (string, value);
wenzelm@53171
   806
    val _ = Theory.setup (Loaded_Values.map (insert (op =) string));
haftmann@39816
   807
  in () end;
haftmann@39816
   808
haftmann@39816
   809
fun abort _ = error "Only value bindings allowed.";
haftmann@39816
   810
wenzelm@62494
   811
val notifying_context : ML_Compiler0.context =
wenzelm@62354
   812
 {name_space =
wenzelm@62495
   813
   {lookupVal    = #lookupVal ML_Env.name_space,
wenzelm@62495
   814
    lookupType   = #lookupType ML_Env.name_space,
wenzelm@62495
   815
    lookupFix    = #lookupFix ML_Env.name_space,
wenzelm@62495
   816
    lookupStruct = #lookupStruct ML_Env.name_space,
wenzelm@62495
   817
    lookupSig    = #lookupSig ML_Env.name_space,
wenzelm@62495
   818
    lookupFunct  = #lookupFunct ML_Env.name_space,
haftmann@39816
   819
    enterVal     = notify_val,
haftmann@39816
   820
    enterType    = abort,
haftmann@39816
   821
    enterFix     = abort,
haftmann@39816
   822
    enterStruct  = abort,
haftmann@39816
   823
    enterSig     = abort,
haftmann@39816
   824
    enterFunct   = abort,
wenzelm@62495
   825
    allVal       = #allVal ML_Env.name_space,
wenzelm@62495
   826
    allType      = #allType ML_Env.name_space,
wenzelm@62495
   827
    allFix       = #allFix ML_Env.name_space,
wenzelm@62495
   828
    allStruct    = #allStruct ML_Env.name_space,
wenzelm@62495
   829
    allSig       = #allSig ML_Env.name_space,
wenzelm@62495
   830
    allFunct     = #allFunct ML_Env.name_space},
wenzelm@62716
   831
  print_depth = NONE,
wenzelm@62495
   832
  here = #here ML_Env.context,
wenzelm@62495
   833
  print = #print ML_Env.context,
wenzelm@62495
   834
  error = #error ML_Env.context};
haftmann@39816
   835
haftmann@39816
   836
in
haftmann@39816
   837
haftmann@39816
   838
fun use_file filepath thy =
haftmann@39816
   839
  let
haftmann@39816
   840
    val thy' = Loaded_Values.put [] thy;
wenzelm@62889
   841
    val _ = Context.put_generic_context ((SOME o Context.Theory) thy');
wenzelm@60956
   842
    val _ =
wenzelm@62902
   843
      ML_Compiler0.ML notifying_context
wenzelm@60956
   844
        {line = 0, file = Path.implode filepath, verbose = false, debug = false}
wenzelm@60956
   845
        (File.read filepath);
wenzelm@62876
   846
    val thy'' = Context.the_global_context ();
haftmann@39912
   847
    val names = Loaded_Values.get thy'';
haftmann@40320
   848
  in (names, thy'') end;
haftmann@39816
   849
haftmann@39816
   850
end;
haftmann@39816
   851
haftmann@39816
   852
fun add_definiendum (ml_name, (b, T)) thy =
haftmann@39816
   853
  thy
haftmann@39816
   854
  |> Code_Target.add_reserved target ml_name
wenzelm@63178
   855
  |> Specification.axiomatization [(b, SOME T, NoSyn)] [] [] []
haftmann@39816
   856
  |-> (fn ([Const (const, _)], _) =>
haftmann@55150
   857
    Code_Target.set_printings (Constant (const,
haftmann@52435
   858
      [(target, SOME (Code_Printer.simple_const_syntax (0, (K o K o K o Code_Printer.str) ml_name)))]))
haftmann@64940
   859
  #> tap (fn thy => Code_Target.produce_code (Proof_Context.init_global thy) false [const] target NONE Code_Target.generatedN []));
haftmann@39816
   860
haftmann@39816
   861
fun process_file filepath (definienda, thy) =
haftmann@39816
   862
  let
haftmann@39816
   863
    val (ml_names, thy') = use_file filepath thy;
haftmann@39816
   864
    val superfluous = subtract (fn ((name1, _), name2) => name1 = name2) definienda ml_names;
haftmann@39816
   865
    val _ = if null superfluous then ()
haftmann@39816
   866
      else error ("Value binding(s) " ^ commas_quote superfluous
wenzelm@41944
   867
        ^ " found in external file " ^ Path.print filepath
haftmann@39816
   868
        ^ " not present among the given contants binding(s).");
haftmann@39816
   869
    val these_definienda = AList.make (the o AList.lookup (op =) definienda) ml_names;
haftmann@39816
   870
    val thy'' = fold add_definiendum these_definienda thy';
haftmann@39816
   871
    val definienda' = fold (AList.delete (op =)) ml_names definienda;
haftmann@39816
   872
  in (definienda', thy'') end;
haftmann@39816
   873
haftmann@39816
   874
fun polyml_as_definition bTs filepaths thy =
haftmann@39816
   875
  let
haftmann@39816
   876
    val definienda = map (fn bT => ((Binding.name_of o fst) bT, bT)) bTs;
haftmann@39816
   877
    val (remaining, thy') = fold process_file filepaths (definienda, thy);
haftmann@39816
   878
    val _ = if null remaining then ()
haftmann@39816
   879
      else error ("Constant binding(s) " ^ commas_quote (map fst remaining)
haftmann@39816
   880
        ^ " not present in external file(s).");
haftmann@39816
   881
  in thy' end;
haftmann@39816
   882
haftmann@28054
   883
end; (*struct*)