src/ZF/ROOT.ML
author clasohm
Tue Nov 21 15:10:12 1995 +0100 (1995-11-21)
changeset 1361 90d615b599d9
parent 1296 ae31bb7774a7
child 1461 6bcb44e4d6e5
permissions -rw-r--r--
main directory is now read by exit_use_dir, too;
removed make_chart from ROOT.ML
     1 (*  Title: 	ZF/ROOT
     2     ID:         $Id$
     3     Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
     4     Copyright   1993  University of Cambridge
     5 
     6 Adds Zermelo-Fraenkel Set Theory to a database containing First-Order Logic.
     7 
     8 This theory is the work of Martin Coen, Philippe Noel and Lawrence Paulson.
     9 *)
    10 
    11 val banner = "ZF Set Theory (in FOL)";
    12 writeln banner;
    13 
    14 (*For Pure/tactic??  A crude way of adding structure to rules*)
    15 fun CHECK_SOLVED (Tactic tf) = 
    16   Tactic (fn state => 
    17     case Sequence.pull (tf state) of
    18 	None => error"DO_GOAL: tactic list failed"
    19       | Some(x,_) => 
    20 		if has_fewer_prems 1 x then
    21 		    Sequence.cons(x, Sequence.null)
    22 		else (writeln"DO_GOAL: unsolved goals!!";
    23 		      writeln"Final proof state was ...";
    24 		      print_goals (!goals_limit) x;
    25 		      raise ERROR));
    26 
    27 fun DO_GOAL tfs = SELECT_GOAL (CHECK_SOLVED (EVERY1 tfs));
    28 
    29 print_depth 1;
    30 
    31 (*Add user sections for inductive/datatype definitions*)
    32 use     "../Pure/section_utils.ML";
    33 use     "thy_syntax.ML";
    34 
    35 use_thy "Let";
    36 use_thy "InfDatatype";
    37 use_thy "List";
    38 use_thy "EquivClass";
    39 
    40 (*printing functions are inherited from FOL*)
    41 print_depth 8;
    42 
    43 val ZF_build_completed = ();	(*indicate successful build*)