--- a/QuotMain.thy	Tue Dec 01 18:22:48 2009 +0100
+++ b/QuotMain.thy	Tue Dec 01 18:41:01 2009 +0100
@@ -5,6 +5,59 @@
      ("quotient_def.ML")
 begin
 
+thm LAMBDA_PRS
+
+ML {*
+let
+   val parser = Args.context -- Scan.lift Args.name_source
+   fun term_pat (ctxt, str) =
+      str |> ProofContext.read_term_pattern ctxt
+          |> ML_Syntax.print_term
+          |> ML_Syntax.atomic
+in
+   ML_Antiquote.inline "term_pat" (parser >> term_pat)
+end
+*}
+
+ML {*
+fun make_inst lhs t =
+  let
+    val _ $ (Abs (_, _, (f as Var (_, Type ("fun", [T, _]))) $ u)) = lhs;
+    val _ $ (Abs (_, _, g)) = t;
+    fun mk_abs i t =
+      if incr_boundvars i u aconv t then Bound i
+      else (case t of
+        t1 $ t2 => mk_abs i t1 $ mk_abs i t2
+      | Abs (s, T, t') => Abs (s, T, mk_abs (i + 1) t')
+      | Bound j => if i = j then error "make_inst" else t
+      | _ => t);
+  in (f, Abs ("x", T, mk_abs 0 g)) end;
+*}
+
+ML {* 
+  val trm1 = @{term_pat "(P::(nat\<Rightarrow>bool)\<Rightarrow>bool) (\<lambda>(x::nat). (?f ((g::nat\<Rightarrow>nat) x)))"}; 
+  val trm2 = @{term_pat "(P::(nat\<Rightarrow>bool)\<Rightarrow>bool) (\<lambda>(x::nat). (h (g x) ((g::nat\<Rightarrow>nat) x)))"}
+*}
+
+ML {*
+fun test trm =
+  case trm of
+  (_ $ (Abs (_, _, (f as Var (_, Type ("fun", [T, _]))) $ u))) => (1,f)
+  | (_ $ (Abs (_, _, (f as (Var (_, _)) $ u)))) => (2,f)
+  | (_ $ (Abs (_, _, (f $ u)))) => (3,f)
+*}
+
+ML {* test trm1 *}
+
+ML {*
+ make_inst trm1 trm2
+  |> pairself (Syntax.string_of_term @{context})
+  |> pairself writeln
+*}
+
+
+
+
 locale QUOT_TYPE =
   fixes R :: "'a \<Rightarrow> 'a \<Rightarrow> bool"
   and   Abs :: "('a \<Rightarrow> bool) \<Rightarrow> 'b"