src/HOL/Tools/hologic.ML
author haftmann
Wed Jul 29 16:48:34 2009 +0200 (2009-07-29)
changeset 32287 65d5c5b30747
parent 32264 0be31453f698
child 32339 40612b7ace87
permissions -rw-r--r--
cleaned up abstract tuple operations and named them consistently
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(*  Title:      HOL/hologic.ML
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    Author:     Lawrence C Paulson and Markus Wenzel
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Abstract syntax operations for HOL.
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*)
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signature HOLOGIC =
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sig
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  val typeS: sort
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  val typeT: typ
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  val boolN: string
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  val boolT: typ
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  val Trueprop: term
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  val mk_Trueprop: term -> term
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  val dest_Trueprop: term -> term
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  val true_const: term
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  val false_const: term
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  val mk_setT: typ -> typ
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  val dest_setT: typ -> typ
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  val Collect_const: typ -> term
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  val mk_Collect: string * typ * term -> term
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  val mk_mem: term * term -> term
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  val dest_mem: term -> term * term
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  val mk_set: typ -> term list -> term
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  val dest_set: term -> term list
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  val mk_UNIV: typ -> term
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  val conj_intr: thm -> thm -> thm
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  val conj_elim: thm -> thm * thm
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  val conj_elims: thm -> thm list
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  val conj: term
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  val disj: term
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  val imp: term
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  val Not: term
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  val mk_conj: term * term -> term
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  val mk_disj: term * term -> term
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  val mk_imp: term * term -> term
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  val mk_not: term -> term
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  val dest_conj: term -> term list
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  val dest_disj: term -> term list
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  val disjuncts: term -> term list
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  val dest_imp: term -> term * term
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  val dest_not: term -> term
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  val eq_const: typ -> term
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  val mk_eq: term * term -> term
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  val dest_eq: term -> term * term
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  val all_const: typ -> term
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  val mk_all: string * typ * term -> term
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  val list_all: (string * typ) list * term -> term
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  val exists_const: typ -> term
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  val mk_exists: string * typ * term -> term
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  val choice_const: typ -> term
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  val class_eq: string
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  val mk_binop: string -> term * term -> term
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  val mk_binrel: string -> term * term -> term
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  val dest_bin: string -> typ -> term -> term * term
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  val unitT: typ
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  val is_unitT: typ -> bool
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  val unit: term
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  val is_unit: term -> bool
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  val mk_prodT: typ * typ -> typ
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  val dest_prodT: typ -> typ * typ
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  val pair_const: typ -> typ -> term
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  val mk_prod: term * term -> term
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  val dest_prod: term -> term * term
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  val mk_fst: term -> term
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  val mk_snd: term -> term
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  val split_const: typ * typ * typ -> term
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  val mk_split: term -> term
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  val flatten_tupleT: typ -> typ list
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  val mk_tupleT: int list list -> typ list -> typ
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  val strip_tupleT: int list list -> typ -> typ list
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  val flat_tupleT_paths: typ -> int list list
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  val mk_tuple: int list list -> typ -> term list -> term
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  val dest_tuple: int list list -> term -> term list
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  val flat_tuple_paths: term -> int list list
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  val mk_splits: int list list -> typ -> typ -> term -> term
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  val strip_splits: term -> term * typ list * int list list
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  val natT: typ
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  val zero: term
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  val is_zero: term -> bool
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  val mk_Suc: term -> term
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  val dest_Suc: term -> term
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  val Suc_zero: term
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  val mk_nat: int -> term
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  val dest_nat: term -> int
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  val class_size: string
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  val size_const: typ -> term
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  val code_numeralT: typ
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  val intT: typ
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  val pls_const: term
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  val min_const: term
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  val bit0_const: term
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  val bit1_const: term
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  val mk_bit: int -> term
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  val dest_bit: term -> int
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  val mk_numeral: int -> term
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  val dest_numeral: term -> int
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  val number_of_const: typ -> term
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  val add_numerals: term -> (term * typ) list -> (term * typ) list
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  val mk_number: typ -> int -> term
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  val dest_number: term -> typ * int
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  val realT: typ
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  val nibbleT: typ
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  val mk_nibble: int -> term
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  val dest_nibble: term -> int
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  val charT: typ
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  val mk_char: int -> term
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  val dest_char: term -> int
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  val listT: typ -> typ
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  val nil_const: typ -> term
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  val cons_const: typ -> term
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  val mk_list: typ -> term list -> term
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  val dest_list: term -> term list
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  val stringT: typ
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  val mk_string: string -> term
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  val dest_string: term -> string
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  val literalT: typ
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  val mk_literal: string -> term
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  val dest_literal: term -> string
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  val mk_typerep: typ -> term
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  val mk_term_of: typ -> term -> term
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  val reflect_term: term -> term
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  val mk_valtermify_app: string -> (string * typ) list -> typ -> term
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  val mk_return: typ -> typ -> term -> term
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  val mk_ST: ((term * typ) * (string * typ) option)  list -> term -> typ -> typ option * typ -> term
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  val mk_random: typ -> term -> term
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end;
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structure HOLogic: HOLOGIC =
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struct
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(* HOL syntax *)
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val typeS: sort = ["HOL.type"];
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val typeT = TypeInfer.anyT typeS;
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(* bool and set *)
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val boolN = "bool";
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val boolT = Type (boolN, []);
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val true_const =  Const ("True", boolT);
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val false_const = Const ("False", boolT);
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fun mk_setT T = T --> boolT;
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fun dest_setT (Type ("fun", [T, Type ("bool", [])])) = T
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  | dest_setT T = raise TYPE ("dest_setT: set type expected", [T], []);
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fun mk_set T ts =
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  let
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    val sT = mk_setT T;
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    val empty = Const ("Orderings.bot_class.bot", sT);
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    fun insert t u = Const ("Set.insert", T --> sT --> sT) $ t $ u;
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  in fold_rev insert ts empty end;
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fun mk_UNIV T = Const ("Orderings.top_class.top", mk_setT T);
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fun dest_set (Const ("Orderings.bot_class.bot", _)) = []
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  | dest_set (Const ("Set.insert", _) $ t $ u) = t :: dest_set u
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  | dest_set t = raise TERM ("dest_set", [t]);
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fun Collect_const T = Const ("Collect", (T --> boolT) --> mk_setT T);
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fun mk_Collect (a, T, t) = Collect_const T $ absfree (a, T, t);
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fun mk_mem (x, A) =
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  let val setT = fastype_of A in
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    Const ("op :", dest_setT setT --> setT --> boolT) $ x $ A
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  end;
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fun dest_mem (Const ("op :", _) $ x $ A) = (x, A)
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  | dest_mem t = raise TERM ("dest_mem", [t]);
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(* logic *)
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val Trueprop = Const ("Trueprop", boolT --> propT);
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fun mk_Trueprop P = Trueprop $ P;
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fun dest_Trueprop (Const ("Trueprop", _) $ P) = P
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  | dest_Trueprop t = raise TERM ("dest_Trueprop", [t]);
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fun conj_intr thP thQ =
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  let
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    val (P, Q) = pairself (ObjectLogic.dest_judgment o Thm.cprop_of) (thP, thQ)
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      handle CTERM (msg, _) => raise THM (msg, 0, [thP, thQ]);
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    val inst = Thm.instantiate ([], [(@{cpat "?P::bool"}, P), (@{cpat "?Q::bool"}, Q)]);
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  in Drule.implies_elim_list (inst @{thm conjI}) [thP, thQ] end;
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fun conj_elim thPQ =
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  let
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    val (P, Q) = Thm.dest_binop (ObjectLogic.dest_judgment (Thm.cprop_of thPQ))
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      handle CTERM (msg, _) => raise THM (msg, 0, [thPQ]);
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    val inst = Thm.instantiate ([], [(@{cpat "?P::bool"}, P), (@{cpat "?Q::bool"}, Q)]);
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    val thP = Thm.implies_elim (inst @{thm conjunct1}) thPQ;
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    val thQ = Thm.implies_elim (inst @{thm conjunct2}) thPQ;
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  in (thP, thQ) end;
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fun conj_elims th =
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  let val (th1, th2) = conj_elim th
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  in conj_elims th1 @ conj_elims th2 end handle THM _ => [th];
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val conj = @{term "op &"}
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and disj = @{term "op |"}
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and imp = @{term "op -->"}
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and Not = @{term "Not"};
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fun mk_conj (t1, t2) = conj $ t1 $ t2
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and mk_disj (t1, t2) = disj $ t1 $ t2
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and mk_imp (t1, t2) = imp $ t1 $ t2
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and mk_not t = Not $ t;
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fun dest_conj (Const ("op &", _) $ t $ t') = t :: dest_conj t'
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  | dest_conj t = [t];
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fun dest_disj (Const ("op |", _) $ t $ t') = t :: dest_disj t'
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  | dest_disj t = [t];
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(*Like dest_disj, but flattens disjunctions however nested*)
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fun disjuncts_aux (Const ("op |", _) $ t $ t') disjs = disjuncts_aux t (disjuncts_aux t' disjs)
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  | disjuncts_aux t disjs = t::disjs;
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fun disjuncts t = disjuncts_aux t [];
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fun dest_imp (Const("op -->",_) $ A $ B) = (A, B)
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  | dest_imp  t = raise TERM ("dest_imp", [t]);
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fun dest_not (Const ("Not", _) $ t) = t
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  | dest_not t = raise TERM ("dest_not", [t]);
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fun eq_const T = Const ("op =", [T, T] ---> boolT);
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fun mk_eq (t, u) = eq_const (fastype_of t) $ t $ u;
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fun dest_eq (Const ("op =", _) $ lhs $ rhs) = (lhs, rhs)
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  | dest_eq t = raise TERM ("dest_eq", [t])
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fun all_const T = Const ("All", [T --> boolT] ---> boolT);
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fun mk_all (x, T, P) = all_const T $ absfree (x, T, P);
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fun list_all (xs, t) = fold_rev (fn (x, T) => fn P => all_const T $ Abs (x, T, P)) xs t;
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fun exists_const T = Const ("Ex", [T --> boolT] ---> boolT);
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fun mk_exists (x, T, P) = exists_const T $ absfree (x, T, P);
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fun choice_const T = Const("Hilbert_Choice.Eps", (T --> boolT) --> T);
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val class_eq = "HOL.eq";
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(* binary operations and relations *)
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fun mk_binop c (t, u) =
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  let val T = fastype_of t in
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    Const (c, [T, T] ---> T) $ t $ u
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  end;
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fun mk_binrel c (t, u) =
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  let val T = fastype_of t in
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    Const (c, [T, T] ---> boolT) $ t $ u
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  end;
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(*destruct the application of a binary operator. The dummyT case is a crude
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  way of handling polymorphic operators.*)
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fun dest_bin c T (tm as Const (c', Type ("fun", [T', _])) $ t $ u) =
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      if c = c' andalso (T=T' orelse T=dummyT) then (t, u)
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      else raise TERM ("dest_bin " ^ c, [tm])
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  | dest_bin c _ tm = raise TERM ("dest_bin " ^ c, [tm]);
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(* unit *)
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val unitT = Type ("Product_Type.unit", []);
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fun is_unitT (Type ("Product_Type.unit", [])) = true
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  | is_unitT _ = false;
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val unit = Const ("Product_Type.Unity", unitT);
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fun is_unit (Const ("Product_Type.Unity", _)) = true
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  | is_unit _ = false;
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(* prod *)
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fun mk_prodT (T1, T2) = Type ("*", [T1, T2]);
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fun dest_prodT (Type ("*", [T1, T2])) = (T1, T2)
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  | dest_prodT T = raise TYPE ("dest_prodT", [T], []);
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fun pair_const T1 T2 = Const ("Pair", [T1, T2] ---> mk_prodT (T1, T2));
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fun mk_prod (t1, t2) =
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  let val T1 = fastype_of t1 and T2 = fastype_of t2 in
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    pair_const T1 T2 $ t1 $ t2
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  end;
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fun dest_prod (Const ("Pair", _) $ t1 $ t2) = (t1, t2)
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  | dest_prod t = raise TERM ("dest_prod", [t]);
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fun mk_fst p =
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  let val pT = fastype_of p in
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    Const ("fst", pT --> fst (dest_prodT pT)) $ p
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  end;
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fun mk_snd p =
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  let val pT = fastype_of p in
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    Const ("snd", pT --> snd (dest_prodT pT)) $ p
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  end;
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fun split_const (A, B, C) =
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  Const ("split", (A --> B --> C) --> mk_prodT (A, B) --> C);
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fun mk_split t =
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  (case Term.fastype_of t of
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    T as (Type ("fun", [A, Type ("fun", [B, C])])) =>
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      Const ("split", T --> mk_prodT (A, B) --> C) $ t
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  | _ => raise TERM ("mk_split: bad body type", [t]));
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(*Maps the type T1 * ... * Tn to [T1, ..., Tn], however nested*)
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fun flatten_tupleT (Type ("*", [T1, T2])) = flatten_tupleT T1 @ flatten_tupleT T2
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  | flatten_tupleT T = [T];
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(* tuples with specific arities
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  an "arity" of a tuple is a list of lists of integers
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  ("factors"), denoting paths to subterms that are pairs
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*)
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   330
fun prod_err s = raise TERM (s ^ ": inconsistent use of products", []);
berghofe@23745
   331
berghofe@23745
   332
fun mk_tupleT ps =
berghofe@23745
   333
  let
berghofe@23745
   334
    fun mk p Ts =
berghofe@23745
   335
      if p mem ps then
berghofe@23745
   336
        let
berghofe@23745
   337
          val (T, Ts') = mk (1::p) Ts;
berghofe@23745
   338
          val (U, Ts'') = mk (2::p) Ts'
berghofe@23745
   339
        in (mk_prodT (T, U), Ts'') end
berghofe@23745
   340
      else (hd Ts, tl Ts)
berghofe@23745
   341
  in fst o mk [] end;
berghofe@23745
   342
haftmann@32287
   343
fun strip_tupleT ps =
haftmann@32287
   344
  let
haftmann@32287
   345
    fun factors p T = if p mem ps then (case T of
haftmann@32287
   346
        Type ("*", [T1, T2]) =>
haftmann@32287
   347
          factors (1::p) T1 @ factors (2::p) T2
haftmann@32287
   348
      | _ => prod_err "strip_tupleT") else [T]
haftmann@32287
   349
  in factors [] end;
haftmann@32287
   350
haftmann@32287
   351
val flat_tupleT_paths =
haftmann@32287
   352
  let
haftmann@32287
   353
    fun factors p (Type ("*", [T1, T2])) =
haftmann@32287
   354
          p :: factors (1::p) T1 @ factors (2::p) T2
haftmann@32287
   355
      | factors p _ = []
haftmann@32287
   356
  in factors [] end;
haftmann@32287
   357
haftmann@32287
   358
fun mk_tuple ps =
haftmann@32287
   359
  let
haftmann@32287
   360
    fun mk p T ts =
haftmann@32287
   361
      if p mem ps then (case T of
haftmann@32287
   362
          Type ("*", [T1, T2]) =>
haftmann@32287
   363
            let
haftmann@32287
   364
              val (t, ts') = mk (1::p) T1 ts;
haftmann@32287
   365
              val (u, ts'') = mk (2::p) T2 ts'
haftmann@32287
   366
            in (pair_const T1 T2 $ t $ u, ts'') end
haftmann@32287
   367
        | _ => prod_err "mk_tuple")
haftmann@32287
   368
      else (hd ts, tl ts)
haftmann@32287
   369
  in fst oo mk [] end;
haftmann@32287
   370
haftmann@32287
   371
fun dest_tuple ps =
haftmann@32287
   372
  let
haftmann@32287
   373
    fun dest p t = if p mem ps then (case t of
haftmann@32287
   374
        Const ("Pair", _) $ t $ u =>
haftmann@32287
   375
          dest (1::p) t @ dest (2::p) u
haftmann@32287
   376
      | _ => prod_err "dest_tuple") else [t]
haftmann@32287
   377
  in dest [] end;
haftmann@32287
   378
haftmann@32287
   379
val flat_tuple_paths =
haftmann@32287
   380
  let
haftmann@32287
   381
    fun factors p (Const ("Pair", _) $ t $ u) =
haftmann@32287
   382
          p :: factors (1::p) t @ factors (2::p) u
haftmann@32287
   383
      | factors p _ = []
haftmann@32287
   384
  in factors [] end;
haftmann@32287
   385
haftmann@32287
   386
(*In mk_splits ps S T u, term u expects separate arguments for the factors of S,
haftmann@32287
   387
  with result type T.  The call creates a new term expecting one argument
haftmann@32287
   388
  of type S.*)
haftmann@32287
   389
fun mk_splits ps T T3 u =
haftmann@32287
   390
  let
haftmann@32287
   391
    fun ap ((p, T) :: pTs) =
haftmann@32287
   392
          if p mem ps then (case T of
haftmann@32287
   393
              Type ("*", [T1, T2]) =>
haftmann@32287
   394
                split_const (T1, T2, map snd pTs ---> T3) $
haftmann@32287
   395
                  ap ((1::p, T1) :: (2::p, T2) :: pTs)
haftmann@32287
   396
            | _ => prod_err "mk_splits")
haftmann@32287
   397
          else Abs ("x", T, ap pTs)
haftmann@32287
   398
      | ap [] =
haftmann@32287
   399
          let val k = length ps
haftmann@32287
   400
          in list_comb (incr_boundvars (k + 1) u, map Bound (k downto 0)) end
haftmann@32287
   401
  in ap [([], T)] end;
haftmann@32287
   402
haftmann@32287
   403
val strip_splits =
berghofe@23745
   404
  let
berghofe@23745
   405
    fun strip [] qs Ts t = (t, Ts, qs)
berghofe@23745
   406
      | strip (p :: ps) qs Ts (Const ("split", _) $ t) =
berghofe@23745
   407
          strip ((1 :: p) :: (2 :: p) :: ps) (p :: qs) Ts t
berghofe@23745
   408
      | strip (p :: ps) qs Ts (Abs (s, T, t)) = strip ps qs (T :: Ts) t
berghofe@23745
   409
      | strip (p :: ps) qs Ts t = strip ps qs
berghofe@23745
   410
          (hd (binder_types (fastype_of1 (Ts, t))) :: Ts)
berghofe@23745
   411
          (incr_boundvars 1 t $ Bound 0)
haftmann@32287
   412
  in strip [[]] [] [] end;
berghofe@23745
   413
wenzelm@5207
   414
wenzelm@5207
   415
(* nat *)
wenzelm@5207
   416
wenzelm@5207
   417
val natT = Type ("nat", []);
wenzelm@5207
   418
haftmann@22994
   419
val zero = Const ("HOL.zero_class.zero", natT);
wenzelm@5207
   420
haftmann@22994
   421
fun is_zero (Const ("HOL.zero_class.zero", _)) = true
wenzelm@5207
   422
  | is_zero _ = false;
wenzelm@5207
   423
wenzelm@5207
   424
fun mk_Suc t = Const ("Suc", natT --> natT) $ t;
wenzelm@5207
   425
wenzelm@5207
   426
fun dest_Suc (Const ("Suc", _) $ t) = t
wenzelm@5207
   427
  | dest_Suc t = raise TERM ("dest_Suc", [t]);
wenzelm@5207
   428
haftmann@21621
   429
val Suc_zero = mk_Suc zero;
haftmann@21621
   430
wenzelm@24630
   431
fun mk_nat n =
haftmann@22994
   432
  let
haftmann@22994
   433
    fun mk 0 = zero
wenzelm@23297
   434
      | mk n = mk_Suc (mk (n - 1));
wenzelm@23576
   435
  in if n < 0 then raise TERM ("mk_nat: negative number", []) else mk n end;
wenzelm@5207
   436
wenzelm@24630
   437
fun dest_nat (Const ("HOL.zero_class.zero", _)) = 0
wenzelm@23297
   438
  | dest_nat (Const ("Suc", _) $ t) = dest_nat t + 1
wenzelm@5207
   439
  | dest_nat t = raise TERM ("dest_nat", [t]);
wenzelm@5207
   440
haftmann@22994
   441
val class_size = "Nat.size";
haftmann@22994
   442
haftmann@22994
   443
fun size_const T = Const ("Nat.size_class.size", T --> natT);
haftmann@22994
   444
wenzelm@5207
   445
haftmann@31205
   446
(* code numeral *)
haftmann@26036
   447
haftmann@31205
   448
val code_numeralT = Type ("Code_Numeral.code_numeral", []);
haftmann@26036
   449
haftmann@26036
   450
wenzelm@21778
   451
(* binary numerals and int -- non-unique representation due to leading zeros/ones! *)
wenzelm@21778
   452
haftmann@25919
   453
val intT = Type ("Int.int", []);
wenzelm@21778
   454
haftmann@25919
   455
val pls_const = Const ("Int.Pls", intT)
haftmann@25919
   456
and min_const = Const ("Int.Min", intT)
huffman@26086
   457
and bit0_const = Const ("Int.Bit0", intT --> intT)
huffman@26086
   458
and bit1_const = Const ("Int.Bit1", intT --> intT);
huffman@26086
   459
huffman@26086
   460
fun mk_bit 0 = bit0_const
huffman@26086
   461
  | mk_bit 1 = bit1_const
huffman@26086
   462
  | mk_bit _ = raise TERM ("mk_bit", []);
huffman@26086
   463
huffman@26086
   464
fun dest_bit (Const ("Int.Bit0", _)) = 0
huffman@26086
   465
  | dest_bit (Const ("Int.Bit1", _)) = 1
huffman@26086
   466
  | dest_bit t = raise TERM ("dest_bit", [t]);
paulson@8768
   467
wenzelm@21829
   468
fun mk_numeral 0 = pls_const
wenzelm@21829
   469
  | mk_numeral ~1 = min_const
wenzelm@21829
   470
  | mk_numeral i =
wenzelm@24630
   471
      let val (q, r) = Integer.div_mod i 2;
huffman@26086
   472
      in mk_bit r $ mk_numeral q end;
berghofe@13755
   473
haftmann@25919
   474
fun dest_numeral (Const ("Int.Pls", _)) = 0
haftmann@25919
   475
  | dest_numeral (Const ("Int.Min", _)) = ~1
huffman@26086
   476
  | dest_numeral (Const ("Int.Bit0", _) $ bs) = 2 * dest_numeral bs
huffman@26086
   477
  | dest_numeral (Const ("Int.Bit1", _) $ bs) = 2 * dest_numeral bs + 1
wenzelm@21829
   478
  | dest_numeral t = raise TERM ("dest_numeral", [t]);
berghofe@13755
   479
haftmann@25919
   480
fun number_of_const T = Const ("Int.number_class.number_of", intT --> T);
haftmann@21820
   481
haftmann@25919
   482
fun add_numerals (Const ("Int.number_class.number_of", Type (_, [_, T])) $ t) = cons (t, T)
wenzelm@23269
   483
  | add_numerals (t $ u) = add_numerals t #> add_numerals u
wenzelm@23269
   484
  | add_numerals (Abs (_, _, t)) = add_numerals t
wenzelm@23269
   485
  | add_numerals _ = I;
haftmann@22391
   486
haftmann@22994
   487
fun mk_number T 0 = Const ("HOL.zero_class.zero", T)
haftmann@22994
   488
  | mk_number T 1 = Const ("HOL.one_class.one", T)
haftmann@21820
   489
  | mk_number T i = number_of_const T $ mk_numeral i;
haftmann@21820
   490
haftmann@22994
   491
fun dest_number (Const ("HOL.zero_class.zero", T)) = (T, 0)
haftmann@22994
   492
  | dest_number (Const ("HOL.one_class.one", T)) = (T, 1)
haftmann@25919
   493
  | dest_number (Const ("Int.number_class.number_of", Type ("fun", [_, T])) $ t) =
haftmann@22994
   494
      (T, dest_numeral t)
haftmann@21820
   495
  | dest_number t = raise TERM ("dest_number", [t]);
berghofe@13755
   496
wenzelm@21829
   497
berghofe@13755
   498
(* real *)
berghofe@13755
   499
wenzelm@16971
   500
val realT = Type ("RealDef.real", []);
berghofe@13755
   501
berghofe@13755
   502
wenzelm@21755
   503
(* list *)
haftmann@21455
   504
wenzelm@21755
   505
fun listT T = Type ("List.list", [T]);
haftmann@21455
   506
berghofe@25887
   507
fun nil_const T = Const ("List.list.Nil", listT T);
berghofe@25887
   508
berghofe@25887
   509
fun cons_const T =
berghofe@25887
   510
  let val lT = listT T
berghofe@25887
   511
  in Const ("List.list.Cons", T --> lT --> lT) end;
berghofe@25887
   512
wenzelm@21755
   513
fun mk_list T ts =
haftmann@21455
   514
  let
wenzelm@21755
   515
    val lT = listT T;
wenzelm@21755
   516
    val Nil = Const ("List.list.Nil", lT);
wenzelm@21755
   517
    fun Cons t u = Const ("List.list.Cons", T --> lT --> lT) $ t $ u;
wenzelm@21755
   518
  in fold_rev Cons ts Nil end;
wenzelm@21755
   519
wenzelm@21755
   520
fun dest_list (Const ("List.list.Nil", _)) = []
wenzelm@21755
   521
  | dest_list (Const ("List.list.Cons", _) $ t $ u) = t :: dest_list u
wenzelm@21755
   522
  | dest_list t = raise TERM ("dest_list", [t]);
haftmann@21455
   523
haftmann@21455
   524
haftmann@31048
   525
(* nibble *)
haftmann@31048
   526
haftmann@31048
   527
val nibbleT = Type ("String.nibble", []);
haftmann@31048
   528
haftmann@31048
   529
fun mk_nibble n =
haftmann@31048
   530
  let val s =
haftmann@31048
   531
    if 0 <= n andalso n <= 9 then chr (n + ord "0")
haftmann@31048
   532
    else if 10 <= n andalso n <= 15 then chr (n + ord "A" - 10)
haftmann@31048
   533
    else raise TERM ("mk_nibble", [])
haftmann@31048
   534
  in Const ("String.nibble.Nibble" ^ s, nibbleT) end;
haftmann@31048
   535
haftmann@31048
   536
fun dest_nibble t =
haftmann@31048
   537
  let fun err () = raise TERM ("dest_nibble", [t]) in
haftmann@31048
   538
    (case try (unprefix "String.nibble.Nibble" o fst o Term.dest_Const) t of
haftmann@31048
   539
      NONE => err ()
haftmann@31048
   540
    | SOME c =>
haftmann@31048
   541
        if size c <> 1 then err ()
haftmann@31048
   542
        else if "0" <= c andalso c <= "9" then ord c - ord "0"
haftmann@31048
   543
        else if "A" <= c andalso c <= "F" then ord c - ord "A" + 10
haftmann@31048
   544
        else err ())
haftmann@31048
   545
  end;
haftmann@31048
   546
haftmann@31048
   547
haftmann@31048
   548
(* char *)
haftmann@31048
   549
haftmann@31048
   550
val charT = Type ("String.char", []);
haftmann@31048
   551
haftmann@31048
   552
fun mk_char n =
haftmann@31048
   553
  if 0 <= n andalso n <= 255 then
haftmann@31048
   554
    Const ("String.char.Char", nibbleT --> nibbleT --> charT) $
haftmann@31048
   555
      mk_nibble (n div 16) $ mk_nibble (n mod 16)
haftmann@31048
   556
  else raise TERM ("mk_char", []);
haftmann@31048
   557
haftmann@31048
   558
fun dest_char (Const ("String.char.Char", _) $ t $ u) =
haftmann@31048
   559
      dest_nibble t * 16 + dest_nibble u
haftmann@31048
   560
  | dest_char t = raise TERM ("dest_char", [t]);
haftmann@31048
   561
haftmann@31048
   562
haftmann@21455
   563
(* string *)
haftmann@21455
   564
haftmann@31048
   565
val stringT = Type ("String.string", []);
haftmann@21455
   566
wenzelm@21755
   567
val mk_string = mk_list charT o map (mk_char o ord) o explode;
wenzelm@21755
   568
val dest_string = implode o map (chr o dest_char) o dest_list;
haftmann@21455
   569
haftmann@31048
   570
haftmann@31205
   571
(* literal *)
haftmann@31048
   572
haftmann@31205
   573
val literalT = Type ("String.literal", []);
haftmann@31048
   574
haftmann@31205
   575
fun mk_literal s = Const ("String.literal.STR", stringT --> literalT)
haftmann@31048
   576
      $ mk_string s;
haftmann@31205
   577
fun dest_literal (Const ("String.literal.STR", _) $ t) =
haftmann@31048
   578
      dest_string t
haftmann@31205
   579
  | dest_literal t = raise TERM ("dest_literal", [t]);
haftmann@31048
   580
haftmann@31135
   581
haftmann@31135
   582
(* typerep and term *)
haftmann@31135
   583
haftmann@31135
   584
val typerepT = Type ("Typerep.typerep", []);
haftmann@31135
   585
haftmann@31736
   586
fun mk_typerep (Type (tyco, Ts)) = Const ("Typerep.typerep.Typerep",
haftmann@31736
   587
      literalT --> listT typerepT --> typerepT) $ mk_literal tyco
haftmann@31736
   588
        $ mk_list typerepT (map mk_typerep Ts)
haftmann@31736
   589
  | mk_typerep (T as TFree _) = Const ("Typerep.typerep_class.typerep",
haftmann@31736
   590
      Term.itselfT T --> typerepT) $ Logic.mk_type T;
haftmann@31135
   591
haftmann@31135
   592
val termT = Type ("Code_Eval.term", []);
haftmann@31135
   593
haftmann@31135
   594
fun mk_term_of T t = Const ("Code_Eval.term_of_class.term_of", T --> termT) $ t;
haftmann@31135
   595
haftmann@31135
   596
fun reflect_term (Const (c, T)) =
haftmann@31205
   597
      Const ("Code_Eval.Const", literalT --> typerepT --> termT)
haftmann@31205
   598
        $ mk_literal c $ mk_typerep T
haftmann@31135
   599
  | reflect_term (t1 $ t2) =
haftmann@31135
   600
      Const ("Code_Eval.App", termT --> termT --> termT)
haftmann@31135
   601
        $ reflect_term t1 $ reflect_term t2
haftmann@31183
   602
  | reflect_term (Abs (v, _, t)) = Abs (v, termT, reflect_term t)
haftmann@31183
   603
  | reflect_term t = t;
haftmann@31183
   604
haftmann@31463
   605
fun mk_valtermify_app c vs T =
haftmann@31463
   606
  let
haftmann@31463
   607
    fun termifyT T = mk_prodT (T, unitT --> termT);
haftmann@31463
   608
    fun valapp T T' = Const ("Code_Eval.valapp",
haftmann@31463
   609
      termifyT (T --> T') --> termifyT T --> termifyT T');
haftmann@31463
   610
    fun mk_fTs [] _ = []
haftmann@31463
   611
      | mk_fTs (_ :: Ts) T = (Ts ---> T) :: mk_fTs Ts T;
haftmann@31463
   612
    val Ts = map snd vs;
haftmann@31463
   613
    val t = Const (c, Ts ---> T);
haftmann@31463
   614
    val tt = mk_prod (t, Abs ("u", unitT, reflect_term t));
haftmann@31463
   615
    fun app (t, (fT, (v, T))) = valapp T fT $ t $ Free (v, termifyT T);
haftmann@31463
   616
  in Library.foldl app (tt, mk_fTs Ts T ~~ vs) end;
haftmann@31463
   617
haftmann@31183
   618
haftmann@31183
   619
(* open state monads *)
haftmann@31183
   620
haftmann@31183
   621
fun mk_return T U x = pair_const T U $ x;
haftmann@31183
   622
haftmann@31183
   623
fun mk_ST clauses t U (someT, V) =
haftmann@31183
   624
  let
haftmann@31183
   625
    val R = case someT of SOME T => mk_prodT (T, V) | NONE => V
haftmann@31183
   626
    fun mk_clause ((t, U), SOME (v, T)) (t', U') =
haftmann@31183
   627
          (Const ("Product_Type.scomp", (U --> mk_prodT (T, U')) --> (T --> U' --> R) --> U --> R)
haftmann@31183
   628
            $ t $ lambda (Free (v, T)) t', U)
haftmann@31183
   629
      | mk_clause ((t, U), NONE) (t', U') =
haftmann@31183
   630
          (Const ("Product_Type.fcomp", (U --> U') --> (U' --> R) --> U --> R)
haftmann@31183
   631
            $ t $ t', U)
haftmann@31183
   632
  in fold_rev mk_clause clauses (t, U) |> fst end;
haftmann@31135
   633
haftmann@31463
   634
val code_numeralT = Type ("Code_Numeral.code_numeral", []);
haftmann@31463
   635
val random_seedT = mk_prodT (code_numeralT, code_numeralT);
haftmann@31463
   636
haftmann@31463
   637
fun mk_random T t = Const ("Quickcheck.random_class.random", code_numeralT
haftmann@31463
   638
  --> random_seedT --> mk_prodT (mk_prodT (T, unitT --> termT), random_seedT)) $ t;
haftmann@31463
   639
clasohm@923
   640
end;