src/FOL/hypsubstdata.ML

+
+(** Applying HypsubstFun to generate hyp_subst_tac **)
+structure Hypsubst_Data =
+  struct
+  structure Simplifier = Simplifier
+    (*These destructors  Match!*)
+  fun dest_eq (Const("op =",T)  $ t $ u) = (t, u, domain_type T)
+  val dest_Trueprop = FOLogic.dest_Trueprop
+  val dest_imp = FOLogic.dest_imp
+  val eq_reflection = eq_reflection
+  val imp_intr = impI
+  val rev_mp = rev_mp
+  val subst = subst
+  val sym = sym
+  val thin_refl = prove_goal (the_context ())
+		  "!!X. [|x=x; PROP W|] ==> PROP W" (K [atac 1]);
+  end;
+
+structure Hypsubst = HypsubstFun(Hypsubst_Data);
+open Hypsubst;