--- a/src/HOL/Tools/ComputeHOL.ML Mon Jul 09 22:06:49 2007 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,54 +0,0 @@
-signature ComputeHOL =
-sig
- val prep_thms : thm list -> thm list
- val to_meta_eq : thm -> thm
- val to_hol_eq : thm -> thm
- val symmetric : thm -> thm
- val trans : thm -> thm -> thm
-end
-
-structure ComputeHOL : ComputeHOL =
-struct
-
-fun all_prems_conv ci ct = Conv.prems_conv (Logic.count_prems (term_of ct)) ci ct
-
-local
-fun lhs_of eq = fst (Thm.dest_equals (cprop_of eq));
-in
-fun rewrite_conv [] ct = raise CTERM ("rewrite_conv", [])
- | rewrite_conv (eq :: eqs) ct =
- Thm.instantiate (Thm.match (lhs_of eq, ct)) eq
- handle Pattern.MATCH => rewrite_conv eqs ct;
-end
-
-val convert_conditions = Conv.fconv_rule (all_prems_conv (fn _ => Conv.else_conv (rewrite_conv [@{thm "Trueprop_eq_eq"}], Conv.all_conv)))
-
-val eq_th = @{thm "HOL.eq_reflection"}
-val meta_eq_trivial = @{thm "ComputeHOL.meta_eq_trivial"}
-val bool_to_true = @{thm "ComputeHOL.bool_to_true"}
-
-fun to_meta_eq th = eq_th OF [th] handle THM _ => meta_eq_trivial OF [th] handle THM _ => bool_to_true OF [th]
-
-fun to_hol_eq th = @{thm "meta_eq_imp_eq"} OF [th] handle THM _ => @{thm "eq_trivial"} OF [th]
-
-fun prep_thms ths = map (convert_conditions o to_meta_eq) ths
-
-local
- val sym_HOL = @{thm "HOL.sym"}
- val sym_Pure = @{thm "ProtoPure.symmetric"}
-in
- fun symmetric th = ((sym_HOL OF [th]) handle THM _ => (sym_Pure OF [th]))
-end
-
-local
- val trans_HOL = @{thm "HOL.trans"}
- val trans_HOL_1 = @{thm "ComputeHOL.transmeta_1"}
- val trans_HOL_2 = @{thm "ComputeHOL.transmeta_2"}
- val trans_HOL_3 = @{thm "ComputeHOL.transmeta_3"}
- fun tr [] th1 th2 = trans_HOL OF [th1, th2]
- | tr (t::ts) th1 th2 = (t OF [th1, th2] handle THM _ => tr ts th1 th2)
-in
- fun trans th1 th2 = tr [trans_HOL, trans_HOL_1, trans_HOL_2, trans_HOL_3] th1 th2
-end
-
-end
\ No newline at end of file