src/ZF/ex/comb.ML

ex/{bin.ML,comb.ML,prop.ML}: replaced NewSext by Syntax.simple_sext
ex/prop-log/hyps_thms_if: split up the fast_tac call for more speed
called expandshort

(*  Title: 	ZF/ex/comb.ML
    ID:         $Id$
    Author: 	Lawrence C Paulson
    Copyright   1993  University of Cambridge

Datatype definition of combinators S and K

J. Camilleri and T. F. Melham.
Reasoning with Inductively Defined Relations in the HOL Theorem Prover.
Report 265, University of Cambridge Computer Laboratory, 1992.
*)


(*Example of a datatype with mixfix syntax for some constructors*)
structure Comb = Datatype_Fun
 (val thy = Univ.thy;
  val rec_specs = 
      [("comb", "univ(0)",
	  [(["K","S"],	"i"),
	   (["op #"],	"[i,i]=>i")])];
  val rec_styp = "i";
  val ext = Some (Syntax.simple_sext [Infixl("#", "[i,i] => i", 90)]);
  val sintrs = 
	  ["K : comb",
	   "S : comb",
	   "[| p: comb;  q: comb |] ==> p#q : comb"];
  val monos = [];
  val type_intrs = data_typechecks;
  val type_elims = []);

val [K_comb,S_comb,Ap_comb] = Comb.intrs;

val Ap_E = Comb.mk_cases Comb.con_defs "p#q : comb";