src/FOLP/ROOT.ML
author wenzelm
Thu Mar 11 13:20:35 1999 +0100 (1999-03-11)
changeset 6349 f7750d816c21
parent 4223 f60e3d2c81d3
child 17480 fd19f77dcf60
permissions -rw-r--r--
removed foo_build_completed -- now handled by session management (via usedir);
     1 (*  Title:      FOLP/ROOT
     2     ID:         $Id$
     3     Author:     martin Coen, Cambridge University Computer Laboratory
     4     Copyright   1993  University of Cambridge
     5 
     6 Modifed version of Lawrence Paulson's FOL that contains proof terms.
     7 
     8 Presence of unknown proof term means that matching does not behave as expected.
     9 *)
    10 
    11 val banner = "First-Order Logic with Natural Deduction with Proof Terms";
    12 
    13 writeln banner;
    14 
    15 print_depth 1;
    16 
    17 use_thy "IFOLP";
    18 use_thy "FOLP";
    19 
    20 use "hypsubst.ML";
    21 use "classical.ML";      (* Patched 'cos matching won't instantiate proof *)
    22 use "simp.ML";           (* Patched 'cos matching won't instantiate proof *)
    23 
    24 
    25 (*** Applying HypsubstFun to generate hyp_subst_tac ***)
    26 
    27 structure Hypsubst_Data =
    28   struct
    29   (*Take apart an equality judgement; otherwise raise Match!*)
    30   fun dest_eq (Const("Proof",_) $ (Const("op =",_)  $ t $ u) $ _) = (t,u);
    31 
    32   val imp_intr = impI
    33 
    34   (*etac rev_cut_eq moves an equality to be the last premise. *)
    35   val rev_cut_eq = prove_goal IFOLP.thy 
    36                 "[| p:a=b;  !!x. x:a=b ==> f(x):R |] ==> ?p:R"
    37    (fn prems => [ REPEAT(resolve_tac prems 1) ]);
    38 
    39   val rev_mp = rev_mp
    40   val subst = subst
    41   val sym = sym
    42   val thin_refl = prove_goal IFOLP.thy 
    43 		  "!!X. [|p:x=x; PROP W|] ==> PROP W" (K [atac 1]);
    44   end;
    45 
    46 structure Hypsubst = HypsubstFun(Hypsubst_Data);
    47 open Hypsubst;
    48 
    49 use "intprover.ML";
    50 
    51 (*** Applying ClassicalFun to create a classical prover ***)
    52 structure Classical_Data = 
    53   struct
    54   val sizef = size_of_thm
    55   val mp = mp
    56   val not_elim = notE
    57   val swap = swap
    58   val hyp_subst_tacs=[hyp_subst_tac]
    59   end;
    60 
    61 structure Cla = ClassicalFun(Classical_Data);
    62 open Cla;
    63 
    64 (*Propositional rules 
    65   -- iffCE might seem better, but in the examples in ex/cla
    66      run about 7% slower than with iffE*)
    67 val prop_cs = empty_cs addSIs [refl,TrueI,conjI,disjCI,impI,notI,iffI] 
    68                        addSEs [conjE,disjE,impCE,FalseE,iffE];
    69 
    70 (*Quantifier rules*)
    71 val FOLP_cs = prop_cs addSIs [allI] addIs [exI,ex1I] 
    72                       addSEs [exE,ex1E] addEs [allE];
    73 
    74 val FOLP_dup_cs = prop_cs addSIs [allI] addIs [exCI,ex1I] 
    75                           addSEs [exE,ex1E] addEs [all_dupE];
    76 
    77 use "simpdata.ML";
    78 
    79 
    80 print_depth 8;