ROOT.ML

Added primitive recursive functions (Norbert Voelker's code) to the datatype
package.

(*  Title: 	HOL/ROOT
    ID:         $Id$
    Author: 	Tobias Nipkow
    Copyright   1993  University of Cambridge

Adds Classical Higher-order Logic to a database containing pure Isabelle. 
Should be executed in the subdirectory HOL.
*)

val banner = "Higher-Order Logic";
writeln banner;

(* Add user section "datatype" *)
use     "Datatype.ML";
structure ThySyn =
  ThySynFun(val user_keywords = ["|", "datatype", "primrec"]
            and user_sections = [("datatype",  datatype_decls),
                                 ("primrec", primrec_decl)]);
init_thy_reader ();

print_depth 1;  
eta_contract := true;
use_thy "HOL";
use "../Provers/hypsubst.ML";
use "../Provers/classical.ML";
use "../Provers/simplifier.ML";
use "../Provers/splitter.ML";
use "../Provers/ind.ML";

(** Applying HypsubstFun to generate hyp_subst_tac **)

structure Hypsubst_Data =
  struct
  (*Take apart an equality judgement; otherwise raise Match!*)
  fun dest_eq (Const("Trueprop",_) $ (Const("op =",_)  $ t $ u)) = (t,u);

  val imp_intr = impI

  (*etac rev_cut_eq moves an equality to be the last premise. *)
  val rev_cut_eq = prove_goal HOL.thy "[| a=b;  a=b ==> R |] ==> R"
   (fn prems => [ REPEAT(resolve_tac prems 1) ]);

  val rev_mp = rev_mp
  val subst = subst 
  val sym = sym
  end;

structure Hypsubst = HypsubstFun(Hypsubst_Data);
open Hypsubst;

(** Applying ClassicalFun to create a classical prover **)
structure Classical_Data = 
  struct
  val sizef = size_of_thm
  val mp = mp
  val not_elim = notE
  val swap = swap
  val hyp_subst_tacs=[hyp_subst_tac]
  end;

structure Classical = ClassicalFun(Classical_Data);
open Classical;

(*Propositional rules*)
val prop_cs = empty_cs addSIs [refl,TrueI,conjI,disjCI,impI,notI,iffI]
                       addSEs [conjE,disjE,impCE,FalseE,iffE];

(*Quantifier rules*)
val HOL_cs = prop_cs addSIs [allI] addIs [exI,ex1I] 
                     addSEs [exE,ex1E] addEs [allE];

val HOL_dup_cs = prop_cs addSIs [allI] addIs [exCI,ex1I] 
                         addSEs [exE,ex1E] addEs [all_dupE];

structure HOL_Induction = InductionFun(struct val spec=spec end);
open HOL_Induction;

use     "simpdata.ML";
use_thy "Ord";
use_thy "Set";
use     "fun.ML";
use     "subset.ML";
use     "equalities.ML";
use_thy "Prod";
use_thy "Sum";
use     "mono.ML";
use_thy "LList";

use "../Pure/install_pp.ML";
print_depth 8;  

val HOL_build_completed = ();	(*indicate successful build*)