author | wenzelm |
Wed, 14 Apr 1999 11:32:50 +0200 | |
changeset 6421 | 037f3446e9e5 |
parent 6391 | 0da748358eff |
child 6489 | e02c5290885d |
permissions | -rw-r--r-- |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
1 |
(* Title: Provers/classical.ML |
0 | 2 |
ID: $Id$ |
3 |
Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
|
4 |
Copyright 1992 University of Cambridge |
|
5 |
||
6 |
Theorem prover for classical reasoning, including predicate calculus, set |
|
7 |
theory, etc. |
|
8 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
9 |
Rules must be classified as intr, elim, safe, hazardous (unsafe). |
0 | 10 |
|
11 |
A rule is unsafe unless it can be applied blindly without harmful results. |
|
12 |
For a rule to be safe, its premises and conclusion should be logically |
|
13 |
equivalent. There should be no variables in the premises that are not in |
|
14 |
the conclusion. |
|
15 |
*) |
|
16 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
17 |
(*higher precedence than := facilitates use of references*) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
18 |
infix 4 addSIs addSEs addSDs addIs addEs addDs delrules |
4651 | 19 |
addSWrapper delSWrapper addWrapper delWrapper |
5523 | 20 |
addSbefore addSaltern addbefore addaltern |
21 |
addD2 addE2 addSD2 addSE2; |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
22 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
23 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
24 |
(*should be a type abbreviation in signature CLASSICAL*) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
25 |
type netpair = (int * (bool * thm)) Net.net * (int * (bool * thm)) Net.net; |
4651 | 26 |
type wrapper = (int -> tactic) -> (int -> tactic); |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
27 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
28 |
signature CLASET_THY_DATA = |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
29 |
sig |
5001 | 30 |
val clasetN: string |
31 |
val clasetK: Object.kind |
|
32 |
exception ClasetData of Object.T ref |
|
4854 | 33 |
val setup: (theory -> theory) list |
5001 | 34 |
val fix_methods: Object.T * (Object.T -> Object.T) * |
35 |
(Object.T * Object.T -> Object.T) * (Sign.sg -> Object.T -> unit) -> unit |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
36 |
end; |
2868
17a23a62f82a
New DEEPEN allows giving an upper bound for deepen_tac
paulson
parents:
2813
diff
changeset
|
37 |
|
0 | 38 |
signature CLASSICAL_DATA = |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
39 |
sig |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
40 |
val mp : thm (* [| P-->Q; P |] ==> Q *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
41 |
val not_elim : thm (* [| ~P; P |] ==> R *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
42 |
val classical : thm (* (~P ==> P) ==> P *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
43 |
val sizef : thm -> int (* size function for BEST_FIRST *) |
0 | 44 |
val hyp_subst_tacs: (int -> tactic) list |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
45 |
end; |
0 | 46 |
|
5841 | 47 |
signature BASIC_CLASSICAL = |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
48 |
sig |
0 | 49 |
type claset |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
50 |
val empty_cs: claset |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
51 |
val print_cs: claset -> unit |
4380 | 52 |
val print_claset: theory -> unit |
4653 | 53 |
val rep_cs: (* BLAST_DATA in blast.ML dependent on this *) |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
54 |
claset -> {safeIs: thm list, safeEs: thm list, |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
55 |
hazIs: thm list, hazEs: thm list, |
4651 | 56 |
swrappers: (string * wrapper) list, |
57 |
uwrappers: (string * wrapper) list, |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
58 |
safe0_netpair: netpair, safep_netpair: netpair, |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
59 |
haz_netpair: netpair, dup_netpair: netpair} |
1711 | 60 |
val merge_cs : claset * claset -> claset |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
61 |
val addDs : claset * thm list -> claset |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
62 |
val addEs : claset * thm list -> claset |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
63 |
val addIs : claset * thm list -> claset |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
64 |
val addSDs : claset * thm list -> claset |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
65 |
val addSEs : claset * thm list -> claset |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
66 |
val addSIs : claset * thm list -> claset |
1800 | 67 |
val delrules : claset * thm list -> claset |
4651 | 68 |
val addSWrapper : claset * (string * wrapper) -> claset |
69 |
val delSWrapper : claset * string -> claset |
|
70 |
val addWrapper : claset * (string * wrapper) -> claset |
|
71 |
val delWrapper : claset * string -> claset |
|
72 |
val addSbefore : claset * (string * (int -> tactic)) -> claset |
|
73 |
val addSaltern : claset * (string * (int -> tactic)) -> claset |
|
74 |
val addbefore : claset * (string * (int -> tactic)) -> claset |
|
75 |
val addaltern : claset * (string * (int -> tactic)) -> claset |
|
5523 | 76 |
val addD2 : claset * (string * thm) -> claset |
77 |
val addE2 : claset * (string * thm) -> claset |
|
78 |
val addSD2 : claset * (string * thm) -> claset |
|
79 |
val addSE2 : claset * (string * thm) -> claset |
|
4765 | 80 |
val appSWrappers : claset -> wrapper |
4651 | 81 |
val appWrappers : claset -> wrapper |
5927 | 82 |
val trace_rules : bool ref |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
83 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
84 |
val claset_ref_of_sg: Sign.sg -> claset ref |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
85 |
val claset_ref_of: theory -> claset ref |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
86 |
val claset_of_sg: Sign.sg -> claset |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
87 |
val claset_of: theory -> claset |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
88 |
val CLASET: (claset -> tactic) -> tactic |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
89 |
val CLASET': (claset -> 'a -> tactic) -> 'a -> tactic |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
90 |
val claset: unit -> claset |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
91 |
val claset_ref: unit -> claset ref |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
92 |
|
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
93 |
val fast_tac : claset -> int -> tactic |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
94 |
val slow_tac : claset -> int -> tactic |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
95 |
val weight_ASTAR : int ref |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
96 |
val astar_tac : claset -> int -> tactic |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
97 |
val slow_astar_tac : claset -> int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
98 |
val best_tac : claset -> int -> tactic |
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
99 |
val slow_best_tac : claset -> int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
100 |
val depth_tac : claset -> int -> int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
101 |
val deepen_tac : claset -> int -> int -> tactic |
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
102 |
|
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
103 |
val contr_tac : int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
104 |
val dup_elim : thm -> thm |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
105 |
val dup_intr : thm -> thm |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
106 |
val dup_step_tac : claset -> int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
107 |
val eq_mp_tac : int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
108 |
val haz_step_tac : claset -> int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
109 |
val joinrules : thm list * thm list -> (bool * thm) list |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
110 |
val mp_tac : int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
111 |
val safe_tac : claset -> tactic |
5757 | 112 |
val safe_steps_tac : claset -> int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
113 |
val safe_step_tac : claset -> int -> tactic |
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
114 |
val clarify_tac : claset -> int -> tactic |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
115 |
val clarify_step_tac : claset -> int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
116 |
val step_tac : claset -> int -> tactic |
2630 | 117 |
val slow_step_tac : claset -> int -> tactic |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
118 |
val swap : thm (* ~P ==> (~Q ==> P) ==> Q *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
119 |
val swapify : thm list -> thm list |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
120 |
val swap_res_tac : thm list -> int -> tactic |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
121 |
val inst_step_tac : claset -> int -> tactic |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
122 |
val inst0_step_tac : claset -> int -> tactic |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
123 |
val instp_step_tac : claset -> int -> tactic |
1724 | 124 |
|
125 |
val AddDs : thm list -> unit |
|
126 |
val AddEs : thm list -> unit |
|
127 |
val AddIs : thm list -> unit |
|
128 |
val AddSDs : thm list -> unit |
|
129 |
val AddSEs : thm list -> unit |
|
130 |
val AddSIs : thm list -> unit |
|
1807 | 131 |
val Delrules : thm list -> unit |
3727
ed63c05d7992
Added Safe_tac; all other default claset tactics now dereference "claset"
paulson
parents:
3705
diff
changeset
|
132 |
val Safe_tac : tactic |
1814 | 133 |
val Safe_step_tac : int -> tactic |
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
134 |
val Clarify_tac : int -> tactic |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
135 |
val Clarify_step_tac : int -> tactic |
1800 | 136 |
val Step_tac : int -> tactic |
1724 | 137 |
val Fast_tac : int -> tactic |
1800 | 138 |
val Best_tac : int -> tactic |
2066 | 139 |
val Slow_tac : int -> tactic |
140 |
val Slow_best_tac : int -> tactic |
|
1800 | 141 |
val Deepen_tac : int -> int -> tactic |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
142 |
end; |
1724 | 143 |
|
5841 | 144 |
signature CLASSICAL = |
145 |
sig |
|
146 |
include BASIC_CLASSICAL |
|
147 |
val print_local_claset: Proof.context -> unit |
|
148 |
val get_local_claset: Proof.context -> claset |
|
149 |
val put_local_claset: claset -> Proof.context -> Proof.context |
|
5885 | 150 |
val haz_dest_global: theory attribute |
151 |
val haz_elim_global: theory attribute |
|
152 |
val haz_intro_global: theory attribute |
|
5841 | 153 |
val safe_dest_global: theory attribute |
154 |
val safe_elim_global: theory attribute |
|
155 |
val safe_intro_global: theory attribute |
|
5885 | 156 |
val delrule_global: theory attribute |
157 |
val haz_dest_local: Proof.context attribute |
|
158 |
val haz_elim_local: Proof.context attribute |
|
159 |
val haz_intro_local: Proof.context attribute |
|
5841 | 160 |
val safe_dest_local: Proof.context attribute |
161 |
val safe_elim_local: Proof.context attribute |
|
162 |
val safe_intro_local: Proof.context attribute |
|
5885 | 163 |
val delrule_local: Proof.context attribute |
5927 | 164 |
val cla_modifiers: (Args.T list -> (Proof.context attribute * Args.T list)) list |
165 |
val cla_method: (claset -> tactic) -> Args.src -> Proof.context -> Proof.method |
|
166 |
val cla_method': (claset -> int -> tactic) -> Args.src -> Proof.context -> Proof.method |
|
6096 | 167 |
val single_tac: claset -> thm list -> int -> tactic |
5841 | 168 |
val setup: (theory -> theory) list |
169 |
end; |
|
170 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
171 |
structure ClasetThyData: CLASET_THY_DATA = |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
172 |
struct |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
173 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
174 |
(* data kind claset -- forward declaration *) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
175 |
|
5001 | 176 |
val clasetN = "Provers/claset"; |
177 |
val clasetK = Object.kind clasetN; |
|
178 |
exception ClasetData of Object.T ref; |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
179 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
180 |
local |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
181 |
fun undef _ = raise Match; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
182 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
183 |
val empty_ref = ref ERROR; |
5001 | 184 |
val prep_ext_fn = ref (undef: Object.T -> Object.T); |
185 |
val merge_fn = ref (undef: Object.T * Object.T -> Object.T); |
|
186 |
val print_fn = ref (undef: Sign.sg -> Object.T -> unit); |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
187 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
188 |
val empty = ClasetData empty_ref; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
189 |
fun prep_ext exn = ! prep_ext_fn exn; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
190 |
fun merge exn = ! merge_fn exn; |
4259 | 191 |
fun print sg exn = ! print_fn sg exn; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
192 |
in |
5001 | 193 |
val setup = [Theory.init_data clasetK (empty, prep_ext, merge, print)]; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
194 |
fun fix_methods (e, ext, mrg, prt) = |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
195 |
(empty_ref := e; prep_ext_fn := ext; merge_fn := mrg; print_fn := prt); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
196 |
end; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
197 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
198 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
199 |
end; |
0 | 200 |
|
201 |
||
5927 | 202 |
functor ClassicalFun(Data: CLASSICAL_DATA): CLASSICAL = |
0 | 203 |
struct |
204 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
205 |
local open ClasetThyData Data in |
0 | 206 |
|
1800 | 207 |
(*** Useful tactics for classical reasoning ***) |
0 | 208 |
|
1524 | 209 |
val imp_elim = (*cannot use bind_thm within a structure!*) |
210 |
store_thm ("imp_elim", make_elim mp); |
|
0 | 211 |
|
4392 | 212 |
(*Prove goal that assumes both P and ~P. |
213 |
No backtracking if it finds an equal assumption. Perhaps should call |
|
214 |
ematch_tac instead of eresolve_tac, but then cannot prove ZF/cantor.*) |
|
215 |
val contr_tac = eresolve_tac [not_elim] THEN' |
|
216 |
(eq_assume_tac ORELSE' assume_tac); |
|
0 | 217 |
|
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
218 |
(*Finds P-->Q and P in the assumptions, replaces implication by Q. |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
219 |
Could do the same thing for P<->Q and P... *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
220 |
fun mp_tac i = eresolve_tac [not_elim, imp_elim] i THEN assume_tac i; |
0 | 221 |
|
222 |
(*Like mp_tac but instantiates no variables*) |
|
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
223 |
fun eq_mp_tac i = ematch_tac [not_elim, imp_elim] i THEN eq_assume_tac i; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
224 |
|
1524 | 225 |
val swap = |
226 |
store_thm ("swap", rule_by_tactic (etac thin_rl 1) (not_elim RS classical)); |
|
0 | 227 |
|
228 |
(*Creates rules to eliminate ~A, from rules to introduce A*) |
|
229 |
fun swapify intrs = intrs RLN (2, [swap]); |
|
230 |
||
231 |
(*Uses introduction rules in the normal way, or on negated assumptions, |
|
232 |
trying rules in order. *) |
|
233 |
fun swap_res_tac rls = |
|
54 | 234 |
let fun addrl (rl,brls) = (false, rl) :: (true, rl RSN (2,swap)) :: brls |
235 |
in assume_tac ORELSE' |
|
236 |
contr_tac ORELSE' |
|
237 |
biresolve_tac (foldr addrl (rls,[])) |
|
0 | 238 |
end; |
239 |
||
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
240 |
(*Duplication of hazardous rules, for complete provers*) |
2689
6d3d893453de
dup_intr & dup_elim no longer call standard -- this
paulson
parents:
2630
diff
changeset
|
241 |
fun dup_intr th = zero_var_indexes (th RS classical); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
242 |
|
4646 | 243 |
fun dup_elim th = |
244 |
th RSN (2, revcut_rl) |> assumption 2 |> Seq.hd |> |
|
245 |
rule_by_tactic (TRYALL (etac revcut_rl)) |
|
246 |
handle _ => error ("Bad format for elimination rule\n" ^ string_of_thm th); |
|
0 | 247 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
248 |
|
1800 | 249 |
(**** Classical rule sets ****) |
0 | 250 |
|
251 |
datatype claset = |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
252 |
CS of {safeIs : thm list, (*safe introduction rules*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
253 |
safeEs : thm list, (*safe elimination rules*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
254 |
hazIs : thm list, (*unsafe introduction rules*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
255 |
hazEs : thm list, (*unsafe elimination rules*) |
4651 | 256 |
swrappers : (string * wrapper) list, (*for transf. safe_step_tac*) |
257 |
uwrappers : (string * wrapper) list, (*for transforming step_tac*) |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
258 |
safe0_netpair : netpair, (*nets for trivial cases*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
259 |
safep_netpair : netpair, (*nets for >0 subgoals*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
260 |
haz_netpair : netpair, (*nets for unsafe rules*) |
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
261 |
dup_netpair : netpair}; (*nets for duplication*) |
0 | 262 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
263 |
(*Desired invariants are |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
264 |
safe0_netpair = build safe0_brls, |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
265 |
safep_netpair = build safep_brls, |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
266 |
haz_netpair = build (joinrules(hazIs, hazEs)), |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
267 |
dup_netpair = build (joinrules(map dup_intr hazIs, |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
268 |
map dup_elim hazEs))} |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
269 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
270 |
where build = build_netpair(Net.empty,Net.empty), |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
271 |
safe0_brls contains all brules that solve the subgoal, and |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
272 |
safep_brls contains all brules that generate 1 or more new subgoals. |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
273 |
The theorem lists are largely comments, though they are used in merge_cs and print_cs. |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
274 |
Nets must be built incrementally, to save space and time. |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
275 |
*) |
0 | 276 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
277 |
val empty_cs = |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
278 |
CS{safeIs = [], |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
279 |
safeEs = [], |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
280 |
hazIs = [], |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
281 |
hazEs = [], |
4651 | 282 |
swrappers = [], |
283 |
uwrappers = [], |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
284 |
safe0_netpair = (Net.empty,Net.empty), |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
285 |
safep_netpair = (Net.empty,Net.empty), |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
286 |
haz_netpair = (Net.empty,Net.empty), |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
287 |
dup_netpair = (Net.empty,Net.empty)}; |
0 | 288 |
|
3546 | 289 |
fun print_cs (CS {safeIs, safeEs, hazIs, hazEs, ...}) = |
290 |
let val pretty_thms = map Display.pretty_thm in |
|
291 |
Pretty.writeln (Pretty.big_list "safe introduction rules:" (pretty_thms safeIs)); |
|
4624 | 292 |
Pretty.writeln (Pretty.big_list "unsafe introduction rules:" (pretty_thms hazIs)); |
4625 | 293 |
Pretty.writeln (Pretty.big_list "safe elimination rules:" (pretty_thms safeEs)); |
294 |
Pretty.writeln (Pretty.big_list "unsafe elimination rules:" (pretty_thms hazEs)) |
|
3546 | 295 |
end; |
0 | 296 |
|
4653 | 297 |
fun rep_cs (CS args) = args; |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
298 |
|
4651 | 299 |
local |
300 |
fun calc_wrap l tac = foldr (fn ((name,tacf),w) => tacf w) (l, tac); |
|
301 |
in |
|
302 |
fun appSWrappers (CS{swrappers,...}) = calc_wrap swrappers; |
|
303 |
fun appWrappers (CS{uwrappers,...}) = calc_wrap uwrappers; |
|
304 |
end; |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
305 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
306 |
|
1800 | 307 |
(*** Adding (un)safe introduction or elimination rules. |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
308 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
309 |
In case of overlap, new rules are tried BEFORE old ones!! |
1800 | 310 |
***) |
0 | 311 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
312 |
(*For use with biresolve_tac. Combines intr rules with swap to handle negated |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
313 |
assumptions. Pairs elim rules with true. *) |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
314 |
fun joinrules (intrs,elims) = |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
315 |
(map (pair true) (elims @ swapify intrs) @ |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
316 |
map (pair false) intrs); |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
317 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
318 |
(*Priority: prefer rules with fewest subgoals, |
1231 | 319 |
then rules added most recently (preferring the head of the list).*) |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
320 |
fun tag_brls k [] = [] |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
321 |
| tag_brls k (brl::brls) = |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
322 |
(1000000*subgoals_of_brl brl + k, brl) :: |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
323 |
tag_brls (k+1) brls; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
324 |
|
1800 | 325 |
fun insert_tagged_list kbrls netpr = foldr insert_tagged_brl (kbrls, netpr); |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
326 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
327 |
(*Insert into netpair that already has nI intr rules and nE elim rules. |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
328 |
Count the intr rules double (to account for swapify). Negate to give the |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
329 |
new insertions the lowest priority.*) |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
330 |
fun insert (nI,nE) = insert_tagged_list o (tag_brls (~(2*nI+nE))) o joinrules; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
331 |
|
1800 | 332 |
fun delete_tagged_list brls netpr = foldr delete_tagged_brl (brls, netpr); |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
333 |
|
1800 | 334 |
val delete = delete_tagged_list o joinrules; |
335 |
||
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
336 |
val mem_thm = gen_mem eq_thm |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
337 |
and rem_thm = gen_rem eq_thm; |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
338 |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
339 |
(*Warn if the rule is already present ELSEWHERE in the claset. The addition |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
340 |
is still allowed.*) |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
341 |
fun warn_dup th (CS{safeIs, safeEs, hazIs, hazEs, ...}) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
342 |
if mem_thm (th, safeIs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
343 |
warning ("Rule already in claset as Safe Intr\n" ^ string_of_thm th) |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
344 |
else if mem_thm (th, safeEs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
345 |
warning ("Rule already in claset as Safe Elim\n" ^ string_of_thm th) |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
346 |
else if mem_thm (th, hazIs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
347 |
warning ("Rule already in claset as unsafe Intr\n" ^ string_of_thm th) |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
348 |
else if mem_thm (th, hazEs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
349 |
warning ("Rule already in claset as unsafe Elim\n" ^ string_of_thm th) |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
350 |
else (); |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
351 |
|
1800 | 352 |
(*** Safe rules ***) |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
353 |
|
4651 | 354 |
fun addSI (cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
355 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
356 |
th) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
357 |
if mem_thm (th, safeIs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
358 |
(warning ("Ignoring duplicate Safe Intr\n" ^ string_of_thm th); |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
359 |
cs) |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
360 |
else |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
361 |
let val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*) |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
362 |
partition (fn rl => nprems_of rl=0) [th] |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
363 |
val nI = length safeIs + 1 |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
364 |
and nE = length safeEs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
365 |
in warn_dup th cs; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
366 |
CS{safeIs = th::safeIs, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
367 |
safe0_netpair = insert (nI,nE) (safe0_rls, []) safe0_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
368 |
safep_netpair = insert (nI,nE) (safep_rls, []) safep_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
369 |
safeEs = safeEs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
370 |
hazIs = hazIs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
371 |
hazEs = hazEs, |
4651 | 372 |
swrappers = swrappers, |
373 |
uwrappers = uwrappers, |
|
2630 | 374 |
haz_netpair = haz_netpair, |
375 |
dup_netpair = dup_netpair} |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
376 |
end; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
377 |
|
4651 | 378 |
fun addSE (cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
379 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
380 |
th) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
381 |
if mem_thm (th, safeEs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
382 |
(warning ("Ignoring duplicate Safe Elim\n" ^ string_of_thm th); |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
383 |
cs) |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
384 |
else |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
385 |
let val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*) |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
386 |
partition (fn rl => nprems_of rl=1) [th] |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
387 |
val nI = length safeIs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
388 |
and nE = length safeEs + 1 |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
389 |
in warn_dup th cs; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
390 |
CS{safeEs = th::safeEs, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
391 |
safe0_netpair = insert (nI,nE) ([], safe0_rls) safe0_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
392 |
safep_netpair = insert (nI,nE) ([], safep_rls) safep_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
393 |
safeIs = safeIs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
394 |
hazIs = hazIs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
395 |
hazEs = hazEs, |
4651 | 396 |
swrappers = swrappers, |
397 |
uwrappers = uwrappers, |
|
2630 | 398 |
haz_netpair = haz_netpair, |
399 |
dup_netpair = dup_netpair} |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
400 |
end; |
0 | 401 |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
402 |
fun rev_foldl f (e, l) = foldl f (e, rev l); |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
403 |
|
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
404 |
val op addSIs = rev_foldl addSI; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
405 |
val op addSEs = rev_foldl addSE; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
406 |
|
0 | 407 |
fun cs addSDs ths = cs addSEs (map make_elim ths); |
408 |
||
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
409 |
|
1800 | 410 |
(*** Hazardous (unsafe) rules ***) |
0 | 411 |
|
4651 | 412 |
fun addI (cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
413 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
414 |
th)= |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
415 |
if mem_thm (th, hazIs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
416 |
(warning ("Ignoring duplicate unsafe Intr\n" ^ string_of_thm th); |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
417 |
cs) |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
418 |
else |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
419 |
let val nI = length hazIs + 1 |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
420 |
and nE = length hazEs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
421 |
in warn_dup th cs; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
422 |
CS{hazIs = th::hazIs, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
423 |
haz_netpair = insert (nI,nE) ([th], []) haz_netpair, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
424 |
dup_netpair = insert (nI,nE) (map dup_intr [th], []) dup_netpair, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
425 |
safeIs = safeIs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
426 |
safeEs = safeEs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
427 |
hazEs = hazEs, |
4651 | 428 |
swrappers = swrappers, |
429 |
uwrappers = uwrappers, |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
430 |
safe0_netpair = safe0_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
431 |
safep_netpair = safep_netpair} |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
432 |
end; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
433 |
|
4651 | 434 |
fun addE (cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
435 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
436 |
th) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
437 |
if mem_thm (th, hazEs) then |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
438 |
(warning ("Ignoring duplicate unsafe Elim\n" ^ string_of_thm th); |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
439 |
cs) |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
440 |
else |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
441 |
let val nI = length hazIs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
442 |
and nE = length hazEs + 1 |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
443 |
in warn_dup th cs; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
444 |
CS{hazEs = th::hazEs, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
445 |
haz_netpair = insert (nI,nE) ([], [th]) haz_netpair, |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
446 |
dup_netpair = insert (nI,nE) ([], map dup_elim [th]) dup_netpair, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
447 |
safeIs = safeIs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
448 |
safeEs = safeEs, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
449 |
hazIs = hazIs, |
4651 | 450 |
swrappers = swrappers, |
451 |
uwrappers = uwrappers, |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
452 |
safe0_netpair = safe0_netpair, |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
453 |
safep_netpair = safep_netpair} |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
454 |
end; |
0 | 455 |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
456 |
val op addIs = rev_foldl addI; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
457 |
val op addEs = rev_foldl addE; |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
458 |
|
0 | 459 |
fun cs addDs ths = cs addEs (map make_elim ths); |
460 |
||
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
461 |
|
1800 | 462 |
(*** Deletion of rules |
463 |
Working out what to delete, requires repeating much of the code used |
|
464 |
to insert. |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
465 |
Separate functions delSI, etc., are not exported; instead delrules |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
466 |
searches in all the lists and chooses the relevant delXX functions. |
1800 | 467 |
***) |
468 |
||
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
469 |
fun delSI th |
4651 | 470 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
471 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) = |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
472 |
if mem_thm (th, safeIs) then |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
473 |
let val (safe0_rls, safep_rls) = partition (fn rl => nprems_of rl=0) [th] |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
474 |
in CS{safe0_netpair = delete (safe0_rls, []) safe0_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
475 |
safep_netpair = delete (safep_rls, []) safep_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
476 |
safeIs = rem_thm (safeIs,th), |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
477 |
safeEs = safeEs, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
478 |
hazIs = hazIs, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
479 |
hazEs = hazEs, |
4651 | 480 |
swrappers = swrappers, |
481 |
uwrappers = uwrappers, |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
482 |
haz_netpair = haz_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
483 |
dup_netpair = dup_netpair} |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
484 |
end |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
485 |
else cs; |
1800 | 486 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
487 |
fun delSE th |
4651 | 488 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
489 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) = |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
490 |
if mem_thm (th, safeEs) then |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
491 |
let val (safe0_rls, safep_rls) = partition (fn rl => nprems_of rl=1) [th] |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
492 |
in CS{safe0_netpair = delete ([], safe0_rls) safe0_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
493 |
safep_netpair = delete ([], safep_rls) safep_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
494 |
safeIs = safeIs, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
495 |
safeEs = rem_thm (safeEs,th), |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
496 |
hazIs = hazIs, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
497 |
hazEs = hazEs, |
4651 | 498 |
swrappers = swrappers, |
499 |
uwrappers = uwrappers, |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
500 |
haz_netpair = haz_netpair, |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
501 |
dup_netpair = dup_netpair} |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
502 |
end |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
503 |
else cs; |
1800 | 504 |
|
505 |
||
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
506 |
fun delI th |
4651 | 507 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
508 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) = |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
509 |
if mem_thm (th, hazIs) then |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
510 |
CS{haz_netpair = delete ([th], []) haz_netpair, |
1800 | 511 |
dup_netpair = delete ([dup_intr th], []) dup_netpair, |
512 |
safeIs = safeIs, |
|
513 |
safeEs = safeEs, |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
514 |
hazIs = rem_thm (hazIs,th), |
1800 | 515 |
hazEs = hazEs, |
4651 | 516 |
swrappers = swrappers, |
517 |
uwrappers = uwrappers, |
|
1800 | 518 |
safe0_netpair = safe0_netpair, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
519 |
safep_netpair = safep_netpair} |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
520 |
else cs; |
1800 | 521 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
522 |
fun delE th |
4651 | 523 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
524 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) = |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
525 |
if mem_thm (th, hazEs) then |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
526 |
CS{haz_netpair = delete ([], [th]) haz_netpair, |
1800 | 527 |
dup_netpair = delete ([], [dup_elim th]) dup_netpair, |
528 |
safeIs = safeIs, |
|
529 |
safeEs = safeEs, |
|
530 |
hazIs = hazIs, |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
531 |
hazEs = rem_thm (hazEs,th), |
4651 | 532 |
swrappers = swrappers, |
533 |
uwrappers = uwrappers, |
|
1800 | 534 |
safe0_netpair = safe0_netpair, |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
535 |
safep_netpair = safep_netpair} |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
536 |
else cs; |
1800 | 537 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
538 |
(*Delete ALL occurrences of "th" in the claset (perhaps from several lists)*) |
1800 | 539 |
fun delrule (cs as CS{safeIs, safeEs, hazIs, hazEs, ...}, th) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
540 |
if mem_thm (th, safeIs) orelse mem_thm (th, safeEs) orelse |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
541 |
mem_thm (th, hazIs) orelse mem_thm (th, hazEs) |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
542 |
then delSI th (delSE th (delI th (delE th cs))) |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
543 |
else (warning ("Rule not in claset\n" ^ (string_of_thm th)); |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
544 |
cs); |
1800 | 545 |
|
546 |
val op delrules = foldl delrule; |
|
547 |
||
548 |
||
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
549 |
(*** Modifying the wrapper tacticals ***) |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
550 |
fun update_swrappers |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
551 |
(CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
552 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) f = |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
553 |
CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
554 |
swrappers = f swrappers, uwrappers = uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
555 |
safe0_netpair = safe0_netpair, safep_netpair = safep_netpair, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
556 |
haz_netpair = haz_netpair, dup_netpair = dup_netpair}; |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
557 |
|
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
558 |
fun update_uwrappers |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
559 |
(CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
560 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair}) f = |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
561 |
CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
562 |
swrappers = swrappers, uwrappers = f uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
563 |
safe0_netpair = safe0_netpair, safep_netpair = safep_netpair, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
564 |
haz_netpair = haz_netpair, dup_netpair = dup_netpair}; |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
565 |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
566 |
|
4651 | 567 |
(*Add/replace a safe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
568 |
fun cs addSWrapper new_swrapper = update_swrappers cs (fn swrappers => |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
569 |
(case assoc_string (swrappers,(fst new_swrapper)) of None =>() |
4651 | 570 |
| Some x => warning("overwriting safe wrapper "^fst new_swrapper); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
571 |
overwrite (swrappers, new_swrapper))); |
4651 | 572 |
|
573 |
(*Add/replace an unsafe wrapper*) |
|
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
574 |
fun cs addWrapper new_uwrapper = update_uwrappers cs (fn uwrappers => |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
575 |
(case assoc_string (uwrappers,(fst new_uwrapper)) of None =>() |
4651 | 576 |
| Some x => warning ("overwriting unsafe wrapper "^fst new_uwrapper); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
577 |
overwrite (uwrappers, new_uwrapper))); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
578 |
|
4651 | 579 |
(*Remove a safe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
580 |
fun cs delSWrapper name = update_swrappers cs (fn swrappers => |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
581 |
let val (del,rest) = partition (fn (n,_) => n=name) swrappers |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
582 |
in if null del then (warning ("No such safe wrapper in claset: "^ name); |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
583 |
swrappers) else rest end); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
584 |
|
4651 | 585 |
(*Remove an unsafe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
586 |
fun cs delWrapper name = update_uwrappers cs (fn uwrappers => |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
587 |
let val (del,rest) = partition (fn (n,_) => n=name) uwrappers |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
588 |
in if null del then (warning ("No such unsafe wrapper in claset: " ^ name); |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
589 |
uwrappers) else rest end); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
590 |
|
2630 | 591 |
(*compose a safe tactic sequentially before/alternatively after safe_step_tac*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
592 |
fun cs addSbefore (name, tac1) = |
5523 | 593 |
cs addSWrapper (name, fn tac2 => tac1 ORELSE' tac2); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
594 |
fun cs addSaltern (name, tac2) = |
5523 | 595 |
cs addSWrapper (name, fn tac1 => tac1 ORELSE' tac2); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
596 |
|
2630 | 597 |
(*compose a tactic sequentially before/alternatively after the step tactic*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
598 |
fun cs addbefore (name, tac1) = |
5523 | 599 |
cs addWrapper (name, fn tac2 => tac1 APPEND' tac2); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
600 |
fun cs addaltern (name, tac2) = |
5523 | 601 |
cs addWrapper (name, fn tac1 => tac1 APPEND' tac2); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
602 |
|
5523 | 603 |
fun cs addD2 (name, thm) = |
604 |
cs addaltern (name, dtac thm THEN' atac); |
|
605 |
fun cs addE2 (name, thm) = |
|
606 |
cs addaltern (name, etac thm THEN' atac); |
|
607 |
fun cs addSD2 (name, thm) = |
|
608 |
cs addSaltern (name, dmatch_tac [thm] THEN' eq_assume_tac); |
|
609 |
fun cs addSE2 (name, thm) = |
|
610 |
cs addSaltern (name, ematch_tac [thm] THEN' eq_assume_tac); |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
611 |
|
1711 | 612 |
(*Merge works by adding all new rules of the 2nd claset into the 1st claset. |
613 |
Merging the term nets may look more efficient, but the rather delicate |
|
614 |
treatment of priority might get muddled up.*) |
|
615 |
fun merge_cs |
|
2630 | 616 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, ...}, |
4765 | 617 |
CS{safeIs=safeIs2, safeEs=safeEs2, hazIs=hazIs2, hazEs=hazEs2, |
618 |
swrappers, uwrappers, ...}) = |
|
1711 | 619 |
let val safeIs' = gen_rems eq_thm (safeIs2,safeIs) |
620 |
val safeEs' = gen_rems eq_thm (safeEs2,safeEs) |
|
2630 | 621 |
val hazIs' = gen_rems eq_thm ( hazIs2, hazIs) |
622 |
val hazEs' = gen_rems eq_thm ( hazEs2, hazEs) |
|
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
623 |
val cs1 = cs addSIs safeIs' |
4765 | 624 |
addSEs safeEs' |
625 |
addIs hazIs' |
|
626 |
addEs hazEs' |
|
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
627 |
val cs2 = update_swrappers cs1 (fn ws => merge_alists ws swrappers); |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
628 |
val cs3 = update_uwrappers cs2 (fn ws => merge_alists ws uwrappers); |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
629 |
in cs3 |
1711 | 630 |
end; |
631 |
||
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
632 |
|
1800 | 633 |
(**** Simple tactics for theorem proving ****) |
0 | 634 |
|
635 |
(*Attack subgoals using safe inferences -- matching, not resolution*) |
|
2630 | 636 |
fun safe_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = |
4651 | 637 |
appSWrappers cs (FIRST' [ |
2630 | 638 |
eq_assume_tac, |
639 |
eq_mp_tac, |
|
640 |
bimatch_from_nets_tac safe0_netpair, |
|
641 |
FIRST' hyp_subst_tacs, |
|
642 |
bimatch_from_nets_tac safep_netpair]); |
|
0 | 643 |
|
5757 | 644 |
(*Repeatedly attack a subgoal using safe inferences -- it's deterministic!*) |
645 |
fun safe_steps_tac cs = REPEAT_DETERM1 o |
|
646 |
(fn i => COND (has_fewer_prems i) no_tac (safe_step_tac cs i)); |
|
647 |
||
0 | 648 |
(*Repeatedly attack subgoals using safe inferences -- it's deterministic!*) |
5757 | 649 |
fun safe_tac cs = REPEAT_DETERM1 (FIRSTGOAL (safe_steps_tac cs)); |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
650 |
|
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
651 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
652 |
(*** Clarify_tac: do safe steps without causing branching ***) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
653 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
654 |
fun nsubgoalsP n (k,brl) = (subgoals_of_brl brl = n); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
655 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
656 |
(*version of bimatch_from_nets_tac that only applies rules that |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
657 |
create precisely n subgoals.*) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
658 |
fun n_bimatch_from_nets_tac n = |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
659 |
biresolution_from_nets_tac (orderlist o filter (nsubgoalsP n)) true; |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
660 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
661 |
fun eq_contr_tac i = ematch_tac [not_elim] i THEN eq_assume_tac i; |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
662 |
val eq_assume_contr_tac = eq_assume_tac ORELSE' eq_contr_tac; |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
663 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
664 |
(*Two-way branching is allowed only if one of the branches immediately closes*) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
665 |
fun bimatch2_tac netpair i = |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
666 |
n_bimatch_from_nets_tac 2 netpair i THEN |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
667 |
(eq_assume_contr_tac i ORELSE eq_assume_contr_tac (i+1)); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
668 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
669 |
(*Attack subgoals using safe inferences -- matching, not resolution*) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
670 |
fun clarify_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = |
4651 | 671 |
appSWrappers cs (FIRST' [ |
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
672 |
eq_assume_contr_tac, |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
673 |
bimatch_from_nets_tac safe0_netpair, |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
674 |
FIRST' hyp_subst_tacs, |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
675 |
n_bimatch_from_nets_tac 1 safep_netpair, |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
676 |
bimatch2_tac safep_netpair]); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
677 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
678 |
fun clarify_tac cs = SELECT_GOAL (REPEAT_DETERM (clarify_step_tac cs 1)); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
679 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
680 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
681 |
(*** Unsafe steps instantiate variables or lose information ***) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
682 |
|
4066 | 683 |
(*Backtracking is allowed among the various these unsafe ways of |
684 |
proving a subgoal. *) |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
685 |
fun inst0_step_tac (CS{safe0_netpair,safep_netpair,...}) = |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
686 |
assume_tac APPEND' |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
687 |
contr_tac APPEND' |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
688 |
biresolve_from_nets_tac safe0_netpair; |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
689 |
|
4066 | 690 |
(*These unsafe steps could generate more subgoals.*) |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
691 |
fun instp_step_tac (CS{safep_netpair,...}) = |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
692 |
biresolve_from_nets_tac safep_netpair; |
0 | 693 |
|
694 |
(*These steps could instantiate variables and are therefore unsafe.*) |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
695 |
fun inst_step_tac cs = inst0_step_tac cs APPEND' instp_step_tac cs; |
0 | 696 |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
697 |
fun haz_step_tac (CS{haz_netpair,...}) = |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
698 |
biresolve_from_nets_tac haz_netpair; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
699 |
|
0 | 700 |
(*Single step for the prover. FAILS unless it makes progress. *) |
5523 | 701 |
fun step_tac cs i = safe_tac cs ORELSE appWrappers cs |
702 |
(inst_step_tac cs ORELSE' haz_step_tac cs) i; |
|
0 | 703 |
|
704 |
(*Using a "safe" rule to instantiate variables is unsafe. This tactic |
|
705 |
allows backtracking from "safe" rules to "unsafe" rules here.*) |
|
5523 | 706 |
fun slow_step_tac cs i = safe_tac cs ORELSE appWrappers cs |
707 |
(inst_step_tac cs APPEND' haz_step_tac cs) i; |
|
0 | 708 |
|
1800 | 709 |
(**** The following tactics all fail unless they solve one goal ****) |
0 | 710 |
|
711 |
(*Dumb but fast*) |
|
712 |
fun fast_tac cs = SELECT_GOAL (DEPTH_SOLVE (step_tac cs 1)); |
|
713 |
||
714 |
(*Slower but smarter than fast_tac*) |
|
715 |
fun best_tac cs = |
|
716 |
SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (step_tac cs 1)); |
|
717 |
||
718 |
fun slow_tac cs = SELECT_GOAL (DEPTH_SOLVE (slow_step_tac cs 1)); |
|
719 |
||
720 |
fun slow_best_tac cs = |
|
721 |
SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (slow_step_tac cs 1)); |
|
722 |
||
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
723 |
|
1800 | 724 |
(***ASTAR with weight weight_ASTAR, by Norbert Voelker*) |
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
725 |
val weight_ASTAR = ref 5; |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
726 |
|
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
727 |
fun astar_tac cs = |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
728 |
SELECT_GOAL ( ASTAR (has_fewer_prems 1 |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
729 |
, fn level =>(fn thm =>size_of_thm thm + !weight_ASTAR *level)) |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
730 |
(step_tac cs 1)); |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
731 |
|
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
732 |
fun slow_astar_tac cs = |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
733 |
SELECT_GOAL ( ASTAR (has_fewer_prems 1 |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
734 |
, fn level =>(fn thm =>size_of_thm thm + !weight_ASTAR *level)) |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
735 |
(slow_step_tac cs 1)); |
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
736 |
|
1800 | 737 |
(**** Complete tactic, loosely based upon LeanTaP. This tactic is the outcome |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
738 |
of much experimentation! Changing APPEND to ORELSE below would prove |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
739 |
easy theorems faster, but loses completeness -- and many of the harder |
1800 | 740 |
theorems such as 43. ****) |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
741 |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
742 |
(*Non-deterministic! Could always expand the first unsafe connective. |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
743 |
That's hard to implement and did not perform better in experiments, due to |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
744 |
greater search depth required.*) |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
745 |
fun dup_step_tac (cs as (CS{dup_netpair,...})) = |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
746 |
biresolve_from_nets_tac dup_netpair; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
747 |
|
5523 | 748 |
(*Searching to depth m. A variant called nodup_depth_tac appears in clasimp.ML*) |
5757 | 749 |
local |
750 |
fun slow_step_tac' cs = appWrappers cs |
|
751 |
(instp_step_tac cs APPEND' dup_step_tac cs); |
|
752 |
in fun depth_tac cs m i state = SELECT_GOAL |
|
753 |
(safe_steps_tac cs 1 THEN_ELSE |
|
754 |
(DEPTH_SOLVE (depth_tac cs m 1), |
|
755 |
inst0_step_tac cs 1 APPEND COND (K (m=0)) no_tac |
|
756 |
(slow_step_tac' cs 1 THEN DEPTH_SOLVE (depth_tac cs (m-1) 1)) |
|
757 |
)) i state; |
|
758 |
end; |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
759 |
|
2173 | 760 |
(*Search, with depth bound m. |
761 |
This is the "entry point", which does safe inferences first.*) |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
762 |
fun safe_depth_tac cs m = |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
763 |
SUBGOAL |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
764 |
(fn (prem,i) => |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
765 |
let val deti = |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
766 |
(*No Vars in the goal? No need to backtrack between goals.*) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
767 |
case term_vars prem of |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
768 |
[] => DETERM |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
769 |
| _::_ => I |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
770 |
in SELECT_GOAL (TRY (safe_tac cs) THEN |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
771 |
DEPTH_SOLVE (deti (depth_tac cs m 1))) i |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
772 |
end); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
773 |
|
2868
17a23a62f82a
New DEEPEN allows giving an upper bound for deepen_tac
paulson
parents:
2813
diff
changeset
|
774 |
fun deepen_tac cs = DEEPEN (2,10) (safe_depth_tac cs); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
775 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
776 |
|
1724 | 777 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
778 |
(** claset theory data **) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
779 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
780 |
(* init data kind claset *) |
1724 | 781 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
782 |
exception CSData of claset ref; |
1724 | 783 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
784 |
local |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
785 |
val empty = CSData (ref empty_cs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
786 |
|
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
787 |
(*create new references*) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
788 |
fun prep_ext (ClasetData (ref (CSData (ref cs)))) = |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
789 |
ClasetData (ref (CSData (ref cs))); |
1724 | 790 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
791 |
fun merge (ClasetData (ref (CSData (ref cs1))), ClasetData (ref (CSData (ref cs2)))) = |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
792 |
ClasetData (ref (CSData (ref (merge_cs (cs1, cs2))))); |
1724 | 793 |
|
4259 | 794 |
fun print (_: Sign.sg) (ClasetData (ref (CSData (ref cs)))) = print_cs cs; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
795 |
in |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
796 |
val _ = fix_methods (empty, prep_ext, merge, print); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
797 |
end; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
798 |
|
1724 | 799 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
800 |
(* access claset *) |
1724 | 801 |
|
5001 | 802 |
val print_claset = Theory.print_data clasetK; |
4380 | 803 |
|
5001 | 804 |
val claset_ref_of_sg = Sign.get_data clasetK (fn ClasetData (ref (CSData r)) => r); |
1807 | 805 |
|
6391 | 806 |
val claset_ref_of = claset_ref_of_sg o Theory.sign_of; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
807 |
val claset_of_sg = ! o claset_ref_of_sg; |
6391 | 808 |
val claset_of = claset_of_sg o Theory.sign_of; |
1800 | 809 |
|
6391 | 810 |
fun CLASET tacf state = tacf (claset_of_sg (Thm.sign_of_thm state)) state; |
811 |
fun CLASET' tacf i state = tacf (claset_of_sg (Thm.sign_of_thm state)) i state; |
|
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
812 |
|
5028 | 813 |
val claset = claset_of o Context.the_context; |
6391 | 814 |
val claset_ref = claset_ref_of_sg o Theory.sign_of o Context.the_context; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
815 |
|
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
816 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
817 |
(* change claset *) |
1800 | 818 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
819 |
fun change_claset f x = claset_ref () := (f (claset (), x)); |
1724 | 820 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
821 |
val AddDs = change_claset (op addDs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
822 |
val AddEs = change_claset (op addEs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
823 |
val AddIs = change_claset (op addIs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
824 |
val AddSDs = change_claset (op addSDs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
825 |
val AddSEs = change_claset (op addSEs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
826 |
val AddSIs = change_claset (op addSIs); |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
827 |
val Delrules = change_claset (op delrules); |
3727
ed63c05d7992
Added Safe_tac; all other default claset tactics now dereference "claset"
paulson
parents:
3705
diff
changeset
|
828 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
829 |
|
5841 | 830 |
(* proof data kind 'Provers/claset' *) |
831 |
||
832 |
structure LocalClasetArgs = |
|
833 |
struct |
|
834 |
val name = "Provers/claset"; |
|
835 |
type T = claset; |
|
836 |
val init = claset_of; |
|
837 |
fun print _ cs = print_cs cs; |
|
838 |
end; |
|
839 |
||
840 |
structure LocalClaset = ProofDataFun(LocalClasetArgs); |
|
841 |
val print_local_claset = LocalClaset.print; |
|
842 |
val get_local_claset = LocalClaset.get; |
|
843 |
val put_local_claset = LocalClaset.put; |
|
844 |
||
845 |
||
5885 | 846 |
(* attributes *) |
847 |
||
848 |
fun change_global_cs f (thy, th) = |
|
849 |
let val r = claset_ref_of thy |
|
6096 | 850 |
in r := f (! r, [th]); (thy, th) end; |
5885 | 851 |
|
852 |
fun change_local_cs f (ctxt, th) = |
|
6096 | 853 |
let val cs = f (get_local_claset ctxt, [th]) |
5885 | 854 |
in (put_local_claset cs ctxt, th) end; |
855 |
||
856 |
val haz_dest_global = change_global_cs (op addDs); |
|
857 |
val haz_elim_global = change_global_cs (op addEs); |
|
858 |
val haz_intro_global = change_global_cs (op addIs); |
|
859 |
val safe_dest_global = change_global_cs (op addSDs); |
|
860 |
val safe_elim_global = change_global_cs (op addSEs); |
|
861 |
val safe_intro_global = change_global_cs (op addSIs); |
|
862 |
val delrule_global = change_global_cs (op delrules); |
|
863 |
||
864 |
val haz_dest_local = change_local_cs (op addDs); |
|
865 |
val haz_elim_local = change_local_cs (op addEs); |
|
866 |
val haz_intro_local = change_local_cs (op addIs); |
|
867 |
val safe_dest_local = change_local_cs (op addSDs); |
|
868 |
val safe_elim_local = change_local_cs (op addSEs); |
|
869 |
val safe_intro_local = change_local_cs (op addSIs); |
|
870 |
val delrule_local = change_local_cs (op delrules); |
|
871 |
||
872 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
873 |
(* tactics referring to the implicit claset *) |
1800 | 874 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
875 |
(*the abstraction over the proof state delays the dereferencing*) |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
876 |
fun Safe_tac st = safe_tac (claset()) st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
877 |
fun Safe_step_tac i st = safe_step_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
878 |
fun Clarify_step_tac i st = clarify_step_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
879 |
fun Clarify_tac i st = clarify_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
880 |
fun Step_tac i st = step_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
881 |
fun Fast_tac i st = fast_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
882 |
fun Best_tac i st = best_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
883 |
fun Slow_tac i st = slow_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
884 |
fun Slow_best_tac i st = slow_best_tac (claset()) i st; |
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
885 |
fun Deepen_tac m = deepen_tac (claset()) m; |
2066 | 886 |
|
1800 | 887 |
|
0 | 888 |
end; |
5841 | 889 |
|
890 |
||
891 |
||
5885 | 892 |
(** concrete syntax of attributes **) |
5841 | 893 |
|
894 |
(* add / del rules *) |
|
895 |
||
896 |
val introN = "intro"; |
|
897 |
val elimN = "elim"; |
|
898 |
val destN = "dest"; |
|
899 |
val delN = "del"; |
|
5885 | 900 |
val delruleN = "delrule"; |
5841 | 901 |
|
5885 | 902 |
val bang = Args.$$$ "!"; |
5841 | 903 |
|
5885 | 904 |
fun cla_att change haz safe = |
905 |
Attrib.syntax (Scan.lift ((bang >> K haz || Scan.succeed safe) >> change)); |
|
5841 | 906 |
|
5885 | 907 |
fun cla_attr f g = (cla_att change_global_cs f g, cla_att change_local_cs f g); |
908 |
val del_attr = (Attrib.no_args delrule_global, Attrib.no_args delrule_local); |
|
5841 | 909 |
|
910 |
||
911 |
(* setup_attrs *) |
|
912 |
||
913 |
val setup_attrs = Attrib.add_attributes |
|
5885 | 914 |
[(destN, cla_attr (op addDs) (op addSDs), "destruction rule"), |
915 |
(elimN, cla_attr (op addEs) (op addSEs), "elimination rule"), |
|
916 |
(introN, cla_attr (op addIs) (op addSIs), "introduction rule"), |
|
917 |
(delruleN, del_attr, "delete rule")]; |
|
5841 | 918 |
|
919 |
||
920 |
||
5885 | 921 |
(** single rule proof method **) |
5841 | 922 |
|
923 |
(* utils *) |
|
924 |
||
925 |
fun resolve_from_seq_tac rq i st = Seq.flat (Seq.map (fn r => rtac r i st) rq); |
|
926 |
fun order_rules xs = map snd (Tactic.orderlist xs); |
|
927 |
||
928 |
fun find_rules concl nets = |
|
929 |
let fun rules_of (inet, _) = order_rules (Net.unify_term inet concl) |
|
930 |
in flat (map rules_of nets) end; |
|
931 |
||
932 |
fun find_erules [] _ = [] |
|
933 |
| find_erules facts nets = |
|
934 |
let |
|
935 |
fun may_unify net = Net.unify_term net o #prop o Thm.rep_thm; |
|
936 |
fun erules_of (_, enet) = order_rules (flat (map (may_unify enet) facts)); |
|
937 |
in flat (map erules_of nets) end; |
|
938 |
||
939 |
||
940 |
(* trace rules *) |
|
941 |
||
942 |
val trace_rules = ref false; |
|
943 |
||
944 |
fun print_rules rules i = |
|
945 |
if not (! trace_rules) then () |
|
946 |
else |
|
947 |
Pretty.writeln (Pretty.big_list ("trying standard rule(s) on goal #" ^ string_of_int i ^ ":") |
|
948 |
(map Display.pretty_thm rules)); |
|
949 |
||
950 |
||
951 |
(* single_tac *) |
|
952 |
||
6096 | 953 |
fun single_tac cs facts = |
5841 | 954 |
let |
955 |
val CS {safe0_netpair, safep_netpair, haz_netpair, dup_netpair, ...} = cs; |
|
956 |
val nets = [safe0_netpair, safep_netpair, haz_netpair, dup_netpair]; |
|
957 |
val erules = find_erules facts nets; |
|
958 |
||
959 |
val tac = SUBGOAL (fn (goal, i) => |
|
960 |
let |
|
961 |
val irules = find_rules (Logic.strip_assums_concl goal) nets; |
|
962 |
val rules = erules @ irules; |
|
963 |
val ruleq = Method.forward_chain facts rules; |
|
964 |
in |
|
965 |
print_rules rules i; |
|
966 |
fn st => Seq.flat (Seq.map (fn rule => Tactic.rtac rule i st) ruleq) end); |
|
967 |
in tac end; |
|
968 |
||
969 |
val single = Method.METHOD (FIRSTGOAL o (fn facts => CLASET' (fn cs => single_tac cs facts))); |
|
970 |
||
971 |
||
972 |
||
973 |
(** automatic methods **) |
|
974 |
||
5927 | 975 |
val cla_modifiers = |
976 |
[Args.$$$ destN -- bang >> K haz_dest_local, |
|
977 |
Args.$$$ destN >> K safe_dest_local, |
|
978 |
Args.$$$ elimN -- bang >> K haz_elim_local, |
|
979 |
Args.$$$ elimN >> K safe_elim_local, |
|
980 |
Args.$$$ introN -- bang >> K haz_intro_local, |
|
981 |
Args.$$$ introN >> K safe_intro_local, |
|
982 |
Args.$$$ delN >> K delrule_local]; |
|
983 |
||
984 |
val cla_args = Method.only_sectioned_args cla_modifiers; |
|
5841 | 985 |
|
5885 | 986 |
fun cla_meth tac ctxt = Method.METHOD0 (tac (get_local_claset ctxt)); |
987 |
fun cla_meth' tac ctxt = Method.METHOD0 (FIRSTGOAL (tac (get_local_claset ctxt))); |
|
5841 | 988 |
|
5885 | 989 |
val cla_method = cla_args o cla_meth; |
990 |
val cla_method' = cla_args o cla_meth'; |
|
5841 | 991 |
|
992 |
||
993 |
||
994 |
(** setup_methods **) |
|
995 |
||
996 |
val setup_methods = Method.add_methods |
|
997 |
[("single", Method.no_args single, "apply standard rule (single step)"), |
|
998 |
("default", Method.no_args single, "apply standard rule (single step)"), |
|
5885 | 999 |
("safe_tac", cla_method safe_tac, "safe_tac"), |
1000 |
("safe_step", cla_method' safe_step_tac, "step_tac"), |
|
1001 |
("fast", cla_method' fast_tac, "fast_tac"), |
|
1002 |
("best", cla_method' best_tac, "best_tac"), |
|
1003 |
("slow", cla_method' slow_tac, "slow_tac"), |
|
1004 |
("slow_best", cla_method' slow_best_tac, "slow_best_tac")]; |
|
5841 | 1005 |
|
1006 |
||
1007 |
||
1008 |
(** theory setup **) |
|
1009 |
||
1010 |
(* FIXME claset theory data *) |
|
1011 |
||
1012 |
val setup = [LocalClaset.init, setup_attrs, setup_methods]; |
|
1013 |
||
1014 |
||
1015 |
end; |