removed (cf. proof_context.ML and local_theory.ML);

--- a/src/Pure/Isar/term_syntax.ML	Sun Dec 10 15:30:37 2006 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,60 +0,0 @@
-(*  Title:      Pure/Isar/term_syntax.ML
-    ID:         $Id$
-    Author:     Makarius
-
-Common term syntax declarations.
-*)
-
-signature TERM_SYNTAX =
-sig
-  val notation: Syntax.mode -> (term * mixfix) list -> local_theory -> local_theory
-  val abbrev: Syntax.mode -> (bstring * mixfix) * term -> local_theory -> local_theory
-end;
-
-structure TermSyntax: TERM_SYNTAX =
-struct
-
-
-(* notation *)  (* FIXME avoid dynamic scoping!? *)
-
-fun target_notation mode args phi =
-  let val args' = filter (fn (t, _) => t aconv Morphism.term phi t) args
-  in Context.mapping (Sign.add_notation mode args') (ProofContext.add_notation mode args') end;
-
-fun notation mode raw_args lthy =
-  let val args = map (apfst (Morphism.term (LocalTheory.target_morphism lthy))) raw_args
-  in LocalTheory.term_syntax (target_notation mode args) lthy end;
-
-
-(* abbrevs *)
-
-fun morph_abbrev phi ((c, mx), rhs) = ((Morphism.name phi c, mx), Morphism.term phi rhs);
-
-fun target_abbrev (prmode, arg) phi =
-  let
-    val mode = #1 prmode;
-    val ((c, mx), rhs) = arg;
-    val ((c', _), rhs') = morph_abbrev phi arg;
-    val abbr = (c', rhs');
-  in
-    if rhs aconv rhs' then   (* FIXME !? *)
-      Context.mapping_result (Sign.add_abbrev mode abbr) (ProofContext.add_abbrev mode abbr)
-        #-> (fn (lhs, _) =>
-          if rhs aconv rhs' then target_notation prmode [(Const lhs, mx)] Morphism.identity
-          else I)
-    else I
-  end;
-
-fun abbrev prmode raw_arg lthy =
-  let
-    val is_local = is_none o Sign.const_constraint (ProofContext.theory_of lthy);
-    val local_term = Term.exists_subterm (fn Const (c, _) => is_local c | _ => false);
-    val input_only = (#1 Syntax.input_mode, #2 prmode);
-    val expand = ProofContext.cert_term (ProofContext.set_expand_abbrevs true lthy);
-    val arg = raw_arg |> (morph_abbrev (LocalTheory.target_morphism lthy) #>
-      (fn (lhs, rhs) =>  (*avoid dynamic references to local names*)
-        if local_term rhs then (input_only, (lhs, expand rhs))
-        else (prmode, (lhs, rhs))));
-  in LocalTheory.term_syntax (fn phi => target_abbrev arg phi) lthy end;
-
-end;