author | wenzelm |
Sun, 22 May 2005 16:51:12 +0200 | |
changeset 16024 | ffe25459c72a |
parent 15797 | a63605582573 |
child 16135 | c66545fe72bf |
permissions | -rw-r--r-- |
250 | 1 |
(* Title: Pure/thm.ML |
0 | 2 |
ID: $Id$ |
250 | 3 |
Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
4 |
Copyright 1994 University of Cambridge |
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
5 |
|
1160 | 6 |
The core of Isabelle's Meta Logic: certified types and terms, meta |
10486 | 7 |
theorems, meta rules (including lifting and resolution). |
0 | 8 |
*) |
9 |
||
6089 | 10 |
signature BASIC_THM = |
1503 | 11 |
sig |
1160 | 12 |
(*certified types*) |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
13 |
type ctyp |
1238 | 14 |
val rep_ctyp : ctyp -> {sign: Sign.sg, T: typ} |
15 |
val typ_of : ctyp -> typ |
|
16 |
val ctyp_of : Sign.sg -> typ -> ctyp |
|
17 |
val read_ctyp : Sign.sg -> string -> ctyp |
|
1160 | 18 |
|
19 |
(*certified terms*) |
|
20 |
type cterm |
|
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
21 |
exception CTERM of string |
4270 | 22 |
val rep_cterm : cterm -> {sign: Sign.sg, t: term, T: typ, maxidx: int} |
4288 | 23 |
val crep_cterm : cterm -> {sign: Sign.sg, t: term, T: ctyp, maxidx: int} |
9461 | 24 |
val sign_of_cterm : cterm -> Sign.sg |
1238 | 25 |
val term_of : cterm -> term |
26 |
val cterm_of : Sign.sg -> term -> cterm |
|
2671 | 27 |
val ctyp_of_term : cterm -> ctyp |
1238 | 28 |
val read_cterm : Sign.sg -> string * typ -> cterm |
1703
e22ad43bab5f
moved dest_cimplies to drule.ML; added adjust_maxidx
clasohm
parents:
1659
diff
changeset
|
29 |
val adjust_maxidx : cterm -> cterm |
1238 | 30 |
val read_def_cterm : |
1160 | 31 |
Sign.sg * (indexname -> typ option) * (indexname -> sort option) -> |
32 |
string list -> bool -> string * typ -> cterm * (indexname * typ) list |
|
4281
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
33 |
val read_def_cterms : |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
34 |
Sign.sg * (indexname -> typ option) * (indexname -> sort option) -> |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
35 |
string list -> bool -> (string * typ)list |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
36 |
-> cterm list * (indexname * typ)list |
1160 | 37 |
|
6089 | 38 |
type tag (* = string * string list *) |
1529 | 39 |
|
1160 | 40 |
(*meta theorems*) |
41 |
type thm |
|
11518 | 42 |
val rep_thm : thm -> {sign: Sign.sg, der: bool * Proofterm.proof, maxidx: int, |
2386 | 43 |
shyps: sort list, hyps: term list, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
44 |
tpairs: (term * term) list, prop: term} |
11518 | 45 |
val crep_thm : thm -> {sign: Sign.sg, der: bool * Proofterm.proof, maxidx: int, |
2386 | 46 |
shyps: sort list, hyps: cterm list, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
47 |
tpairs: (cterm * cterm) list, prop: cterm} |
6089 | 48 |
exception THM of string * int * thm list |
49 |
type 'a attribute (* = 'a * thm -> 'a * thm *) |
|
3994 | 50 |
val eq_thm : thm * thm -> bool |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
51 |
val sign_of_thm : thm -> Sign.sg |
12803 | 52 |
val prop_of : thm -> term |
13528 | 53 |
val proof_of : thm -> Proofterm.proof |
4254 | 54 |
val transfer_sg : Sign.sg -> thm -> thm |
3895 | 55 |
val transfer : theory -> thm -> thm |
1238 | 56 |
val tpairs_of : thm -> (term * term) list |
57 |
val prems_of : thm -> term list |
|
58 |
val nprems_of : thm -> int |
|
59 |
val concl_of : thm -> term |
|
60 |
val cprop_of : thm -> cterm |
|
61 |
val extra_shyps : thm -> sort list |
|
62 |
val strip_shyps : thm -> thm |
|
15672 | 63 |
val get_axiom_i : theory -> string -> thm |
3812 | 64 |
val get_axiom : theory -> xstring -> thm |
6368 | 65 |
val def_name : string -> string |
4847 | 66 |
val get_def : theory -> xstring -> thm |
1238 | 67 |
val axioms_of : theory -> (string * thm) list |
1160 | 68 |
|
69 |
(*meta rules*) |
|
1238 | 70 |
val assume : cterm -> thm |
1416 | 71 |
val compress : thm -> thm |
1238 | 72 |
val implies_intr : cterm -> thm -> thm |
73 |
val implies_elim : thm -> thm -> thm |
|
74 |
val forall_intr : cterm -> thm -> thm |
|
75 |
val forall_elim : cterm -> thm -> thm |
|
76 |
val reflexive : cterm -> thm |
|
77 |
val symmetric : thm -> thm |
|
78 |
val transitive : thm -> thm -> thm |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
79 |
val beta_conversion : bool -> cterm -> thm |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
80 |
val eta_conversion : cterm -> thm |
1238 | 81 |
val abstract_rule : string -> cterm -> thm -> thm |
82 |
val combination : thm -> thm -> thm |
|
83 |
val equal_intr : thm -> thm -> thm |
|
84 |
val equal_elim : thm -> thm -> thm |
|
85 |
val implies_intr_hyps : thm -> thm |
|
4270 | 86 |
val flexflex_rule : thm -> thm Seq.seq |
1238 | 87 |
val instantiate : |
15797 | 88 |
(ctyp * ctyp) list * (cterm * cterm) list -> thm -> thm |
1238 | 89 |
val trivial : cterm -> thm |
6368 | 90 |
val class_triv : Sign.sg -> class -> thm |
1238 | 91 |
val varifyT : thm -> thm |
15797 | 92 |
val varifyT' : (string * sort) list -> thm -> thm * ((string * sort) * indexname) list |
1238 | 93 |
val freezeT : thm -> thm |
94 |
val dest_state : thm * int -> |
|
1160 | 95 |
(term * term) list * term list * term * term |
1238 | 96 |
val lift_rule : (thm * int) -> thm -> thm |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
97 |
val incr_indexes : int -> thm -> thm |
4270 | 98 |
val assumption : int -> thm -> thm Seq.seq |
1238 | 99 |
val eq_assumption : int -> thm -> thm |
2671 | 100 |
val rotate_rule : int -> int -> thm -> thm |
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
101 |
val permute_prems : int -> int -> thm -> thm |
1160 | 102 |
val rename_params_rule: string list * int -> thm -> thm |
1238 | 103 |
val bicompose : bool -> bool * thm * int -> |
4270 | 104 |
int -> thm -> thm Seq.seq |
1238 | 105 |
val biresolution : bool -> (bool * thm) list -> |
4270 | 106 |
int -> thm -> thm Seq.seq |
15672 | 107 |
val invoke_oracle_i : theory -> string -> Sign.sg * Object.T -> thm |
4999 | 108 |
val invoke_oracle : theory -> xstring -> Sign.sg * Object.T -> thm |
250 | 109 |
end; |
0 | 110 |
|
6089 | 111 |
signature THM = |
112 |
sig |
|
113 |
include BASIC_THM |
|
15087 | 114 |
val dest_ctyp : ctyp -> ctyp list |
10767
8fa4aafa7314
Thm: dest_comb, dest_abs, capply, cabs no longer global;
wenzelm
parents:
10486
diff
changeset
|
115 |
val dest_comb : cterm -> cterm * cterm |
8fa4aafa7314
Thm: dest_comb, dest_abs, capply, cabs no longer global;
wenzelm
parents:
10486
diff
changeset
|
116 |
val dest_abs : string option -> cterm -> cterm * cterm |
8fa4aafa7314
Thm: dest_comb, dest_abs, capply, cabs no longer global;
wenzelm
parents:
10486
diff
changeset
|
117 |
val capply : cterm -> cterm -> cterm |
8fa4aafa7314
Thm: dest_comb, dest_abs, capply, cabs no longer global;
wenzelm
parents:
10486
diff
changeset
|
118 |
val cabs : cterm -> cterm -> cterm |
8299 | 119 |
val major_prem_of : thm -> term |
7534 | 120 |
val no_prems : thm -> bool |
6089 | 121 |
val no_attributes : 'a -> 'a * 'b attribute list |
122 |
val apply_attributes : ('a * thm) * 'a attribute list -> ('a * thm) |
|
123 |
val applys_attributes : ('a * thm list) * 'a attribute list -> ('a * thm list) |
|
124 |
val get_name_tags : thm -> string * tag list |
|
125 |
val put_name_tags : string * tag list -> thm -> thm |
|
126 |
val name_of_thm : thm -> string |
|
127 |
val tags_of_thm : thm -> tag list |
|
128 |
val name_thm : string * thm -> thm |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
129 |
val rename_boundvars : term -> term -> thm -> thm |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
130 |
val cterm_match : cterm * cterm -> |
15797 | 131 |
(ctyp * ctyp) list * (cterm * cterm) list |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
132 |
val cterm_first_order_match : cterm * cterm -> |
15797 | 133 |
(ctyp * ctyp) list * (cterm * cterm) list |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
134 |
val cterm_incr_indexes : int -> cterm -> cterm |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
135 |
val terms_of_tpairs : (term * term) list -> term list |
6089 | 136 |
end; |
137 |
||
3550 | 138 |
structure Thm: THM = |
0 | 139 |
struct |
250 | 140 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
141 |
(*** Certified terms and types ***) |
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
142 |
|
250 | 143 |
(** certified types **) |
144 |
||
145 |
(*certified typs under a signature*) |
|
146 |
||
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
147 |
datatype ctyp = Ctyp of {sign_ref: Sign.sg_ref, T: typ}; |
250 | 148 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
149 |
fun rep_ctyp (Ctyp {sign_ref, T}) = {sign = Sign.deref sign_ref, T = T}; |
250 | 150 |
fun typ_of (Ctyp {T, ...}) = T; |
151 |
||
152 |
fun ctyp_of sign T = |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
153 |
Ctyp {sign_ref = Sign.self_ref sign, T = Sign.certify_typ sign T}; |
250 | 154 |
|
155 |
fun read_ctyp sign s = |
|
15531 | 156 |
Ctyp {sign_ref = Sign.self_ref sign, T = Sign.read_typ (sign, K NONE) s}; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
157 |
|
15087 | 158 |
fun dest_ctyp (Ctyp {sign_ref, T = Type (s, Ts)}) = |
159 |
map (fn T => Ctyp {sign_ref = sign_ref, T = T}) Ts |
|
160 |
| dest_ctyp ct = [ct]; |
|
161 |
||
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
162 |
|
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
163 |
|
250 | 164 |
(** certified terms **) |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
165 |
|
250 | 166 |
(*certified terms under a signature, with checked typ and maxidx of Vars*) |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
167 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
168 |
datatype cterm = Cterm of {sign_ref: Sign.sg_ref, t: term, T: typ, maxidx: int}; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
169 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
170 |
fun rep_cterm (Cterm {sign_ref, t, T, maxidx}) = |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
171 |
{sign = Sign.deref sign_ref, t = t, T = T, maxidx = maxidx}; |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
172 |
|
4288 | 173 |
fun crep_cterm (Cterm {sign_ref, t, T, maxidx}) = |
174 |
{sign = Sign.deref sign_ref, t = t, T = Ctyp {sign_ref = sign_ref, T = T}, |
|
175 |
maxidx = maxidx}; |
|
176 |
||
9461 | 177 |
fun sign_of_cterm (Cterm {sign_ref, ...}) = Sign.deref sign_ref; |
178 |
||
250 | 179 |
fun term_of (Cterm {t, ...}) = t; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
180 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
181 |
fun ctyp_of_term (Cterm {sign_ref, T, ...}) = Ctyp {sign_ref = sign_ref, T = T}; |
2671 | 182 |
|
250 | 183 |
(*create a cterm by checking a "raw" term with respect to a signature*) |
184 |
fun cterm_of sign tm = |
|
14828 | 185 |
let val (t, T, maxidx) = Sign.certify_term (Sign.pp sign) sign tm |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
186 |
in Cterm {sign_ref = Sign.self_ref sign, t = t, T = T, maxidx = maxidx} |
1394
a1d2735f5ade
New function read_cterms is a combination of read_def_cterm and
paulson
parents:
1258
diff
changeset
|
187 |
end; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
188 |
|
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
189 |
|
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
190 |
exception CTERM of string; |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
191 |
|
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
192 |
(*Destruct application in cterms*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
193 |
fun dest_comb (Cterm {sign_ref, T, maxidx, t = A $ B}) = |
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
194 |
let val typeA = fastype_of A; |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
195 |
val typeB = |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
196 |
case typeA of Type("fun",[S,T]) => S |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
197 |
| _ => error "Function type expected in dest_comb"; |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
198 |
in |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
199 |
(Cterm {sign_ref=sign_ref, maxidx=maxidx, t=A, T=typeA}, |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
200 |
Cterm {sign_ref=sign_ref, maxidx=maxidx, t=B, T=typeB}) |
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
201 |
end |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
202 |
| dest_comb _ = raise CTERM "dest_comb"; |
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
203 |
|
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
204 |
(*Destruct abstraction in cterms*) |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
205 |
fun dest_abs a (Cterm {sign_ref, T as Type("fun",[_,S]), maxidx, t=Abs(x,ty,M)}) = |
15570 | 206 |
let val (y,N) = variant_abs (getOpt (a,x),ty,M) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
207 |
in (Cterm {sign_ref = sign_ref, T = ty, maxidx = 0, t = Free(y,ty)}, |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
208 |
Cterm {sign_ref = sign_ref, T = S, maxidx = maxidx, t = N}) |
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
209 |
end |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
210 |
| dest_abs _ _ = raise CTERM "dest_abs"; |
1493
e936723cb94d
added dest_comb, dest_abs and mk_prop for manipulating cterms
clasohm
parents:
1460
diff
changeset
|
211 |
|
2147 | 212 |
(*Makes maxidx precise: it is often too big*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
213 |
fun adjust_maxidx (ct as Cterm {sign_ref, T, t, maxidx, ...}) = |
2147 | 214 |
if maxidx = ~1 then ct |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
215 |
else Cterm {sign_ref = sign_ref, T = T, maxidx = maxidx_of_term t, t = t}; |
1703
e22ad43bab5f
moved dest_cimplies to drule.ML; added adjust_maxidx
clasohm
parents:
1659
diff
changeset
|
216 |
|
1516
96286c4e32de
removed mk_prop; added capply; simplified dest_abs
clasohm
parents:
1503
diff
changeset
|
217 |
(*Form cterm out of a function and an argument*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
218 |
fun capply (Cterm {t=f, sign_ref=sign_ref1, T=Type("fun",[dty,rty]), maxidx=maxidx1}) |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
219 |
(Cterm {t=x, sign_ref=sign_ref2, T, maxidx=maxidx2}) = |
8291 | 220 |
if T = dty then |
15797 | 221 |
Cterm{t = f $ x, |
15087 | 222 |
sign_ref=Sign.merge_refs(sign_ref1,sign_ref2), T=rty, |
8291 | 223 |
maxidx=Int.max(maxidx1, maxidx2)} |
1516
96286c4e32de
removed mk_prop; added capply; simplified dest_abs
clasohm
parents:
1503
diff
changeset
|
224 |
else raise CTERM "capply: types don't agree" |
96286c4e32de
removed mk_prop; added capply; simplified dest_abs
clasohm
parents:
1503
diff
changeset
|
225 |
| capply _ _ = raise CTERM "capply: first arg is not a function" |
250 | 226 |
|
15264
a881ad2e9edc
Changed function cabs to also allow abstraction over Vars.
berghofe
parents:
15087
diff
changeset
|
227 |
fun cabs (Cterm {t=t1, sign_ref=sign_ref1, T=T1, maxidx=maxidx1}) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
228 |
(Cterm {t=t2, sign_ref=sign_ref2, T=T2, maxidx=maxidx2}) = |
15797 | 229 |
Cterm {t = lambda t1 t2, sign_ref = Sign.merge_refs (sign_ref1,sign_ref2), |
15264
a881ad2e9edc
Changed function cabs to also allow abstraction over Vars.
berghofe
parents:
15087
diff
changeset
|
230 |
T = T1 --> T2, maxidx=Int.max(maxidx1, maxidx2)} |
a881ad2e9edc
Changed function cabs to also allow abstraction over Vars.
berghofe
parents:
15087
diff
changeset
|
231 |
handle TERM _ => raise CTERM "cabs: first arg is not a variable"; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
232 |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
233 |
(*Matching of cterms*) |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
234 |
fun gen_cterm_match mtch |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
235 |
(Cterm {sign_ref = sign_ref1, maxidx = maxidx1, t = t1, ...}, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
236 |
Cterm {sign_ref = sign_ref2, maxidx = maxidx2, t = t2, ...}) = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
237 |
let |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
238 |
val sign_ref = Sign.merge_refs (sign_ref1, sign_ref2); |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
239 |
val tsig = Sign.tsig_of (Sign.deref sign_ref); |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
240 |
val (Tinsts, tinsts) = mtch tsig (t1, t2); |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
241 |
val maxidx = Int.max (maxidx1, maxidx2); |
15797 | 242 |
fun mk_cTinsts (ixn, (S, T)) = |
243 |
(Ctyp {sign_ref = sign_ref, T = TVar (ixn, S)}, |
|
244 |
Ctyp {sign_ref = sign_ref, T = T}); |
|
245 |
fun mk_ctinsts (ixn, (T, t)) = |
|
246 |
let val T = Envir.typ_subst_TVars Tinsts T |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
247 |
in |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
248 |
(Cterm {sign_ref = sign_ref, maxidx = maxidx, T = T, t = Var (ixn, T)}, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
249 |
Cterm {sign_ref = sign_ref, maxidx = maxidx, T = T, t = t}) |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
250 |
end; |
15797 | 251 |
in (map mk_cTinsts (Vartab.dest Tinsts), |
252 |
map mk_ctinsts (Vartab.dest tinsts)) |
|
253 |
end; |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
254 |
|
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
255 |
val cterm_match = gen_cterm_match Pattern.match; |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
256 |
val cterm_first_order_match = gen_cterm_match Pattern.first_order_match; |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
257 |
|
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
258 |
(*Incrementing indexes*) |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
259 |
fun cterm_incr_indexes i (ct as Cterm {sign_ref, maxidx, t, T}) = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
260 |
if i < 0 then raise CTERM "negative increment" else |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
261 |
if i = 0 then ct else |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
262 |
Cterm {sign_ref = sign_ref, maxidx = maxidx + i, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
263 |
t = Logic.incr_indexes ([], i) t, T = Term.incr_tvar i T}; |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
264 |
|
2509 | 265 |
|
266 |
||
574 | 267 |
(** read cterms **) (*exception ERROR*) |
250 | 268 |
|
4281
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
269 |
(*read terms, infer types, certify terms*) |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
270 |
fun read_def_cterms (sign, types, sorts) used freeze sTs = |
250 | 271 |
let |
8608 | 272 |
val (ts', tye) = Sign.read_def_terms (sign, types, sorts) used freeze sTs; |
4281
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
273 |
val cts = map (cterm_of sign) ts' |
2979 | 274 |
handle TYPE (msg, _, _) => error msg |
2386 | 275 |
| TERM (msg, _) => error msg; |
4281
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
276 |
in (cts, tye) end; |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
277 |
|
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
278 |
(*read term, infer types, certify term*) |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
279 |
fun read_def_cterm args used freeze aT = |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
280 |
let val ([ct],tye) = read_def_cterms args used freeze [aT] |
6c6073b13600
Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents:
4270
diff
changeset
|
281 |
in (ct,tye) end; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
282 |
|
15531 | 283 |
fun read_cterm sign = #1 o read_def_cterm (sign, K NONE, K NONE) [] true; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
284 |
|
250 | 285 |
|
6089 | 286 |
(*tags provide additional comment, apart from the axiom/theorem name*) |
287 |
type tag = string * string list; |
|
288 |
||
2509 | 289 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
290 |
(*** Meta theorems ***) |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
291 |
|
11518 | 292 |
structure Pt = Proofterm; |
293 |
||
0 | 294 |
datatype thm = Thm of |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
295 |
{sign_ref: Sign.sg_ref, (*mutable reference to signature*) |
11518 | 296 |
der: bool * Pt.proof, (*derivation*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
297 |
maxidx: int, (*maximum index of any Var or TVar*) |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
298 |
shyps: sort list, (*sort hypotheses*) |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
299 |
hyps: term list, (*hypotheses*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
300 |
tpairs: (term * term) list, (*flex-flex pairs*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
301 |
prop: term}; (*conclusion*) |
0 | 302 |
|
16024 | 303 |
fun terms_of_tpairs tpairs = List.concat (map (fn (t, u) => [t, u]) tpairs); |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
304 |
|
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
305 |
fun attach_tpairs tpairs prop = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
306 |
Logic.list_implies (map Logic.mk_equals tpairs, prop); |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
307 |
|
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
308 |
fun rep_thm (Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop}) = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
309 |
{sign = Sign.deref sign_ref, der = der, maxidx = maxidx, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
310 |
shyps = shyps, hyps = hyps, tpairs = tpairs, prop = prop}; |
0 | 311 |
|
1529 | 312 |
(*Version of rep_thm returning cterms instead of terms*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
313 |
fun crep_thm (Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop}) = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
314 |
let fun ctermf max t = Cterm{sign_ref=sign_ref, t=t, T=propT, maxidx=max}; |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
315 |
in {sign = Sign.deref sign_ref, der = der, maxidx = maxidx, shyps = shyps, |
1529 | 316 |
hyps = map (ctermf ~1) hyps, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
317 |
tpairs = map (pairself (ctermf maxidx)) tpairs, |
1529 | 318 |
prop = ctermf maxidx prop} |
1517 | 319 |
end; |
320 |
||
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
321 |
(*errors involving theorems*) |
0 | 322 |
exception THM of string * int * thm list; |
323 |
||
6089 | 324 |
(*attributes subsume any kind of rules or addXXXs modifiers*) |
325 |
type 'a attribute = 'a * thm -> 'a * thm; |
|
326 |
||
327 |
fun no_attributes x = (x, []); |
|
328 |
fun apply_attributes (x_th, atts) = Library.apply atts x_th; |
|
329 |
fun applys_attributes (x_ths, atts) = foldl_map (Library.apply atts) x_ths; |
|
330 |
||
3994 | 331 |
fun eq_thm (th1, th2) = |
332 |
let |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
333 |
val {sign = sg1, shyps = shyps1, hyps = hyps1, tpairs = tpairs1, prop = prop1, ...} = |
9031 | 334 |
rep_thm th1; |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
335 |
val {sign = sg2, shyps = shyps2, hyps = hyps2, tpairs = tpairs2, prop = prop2, ...} = |
9031 | 336 |
rep_thm th2; |
3994 | 337 |
in |
9031 | 338 |
Sign.joinable (sg1, sg2) andalso |
14791 | 339 |
Sorts.eq_set_sort (shyps1, shyps2) andalso |
3994 | 340 |
aconvs (hyps1, hyps2) andalso |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
341 |
aconvs (terms_of_tpairs tpairs1, terms_of_tpairs tpairs2) andalso |
3994 | 342 |
prop1 aconv prop2 |
343 |
end; |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
344 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
345 |
fun sign_of_thm (Thm {sign_ref, ...}) = Sign.deref sign_ref; |
12803 | 346 |
fun prop_of (Thm {prop, ...}) = prop; |
13528 | 347 |
fun proof_of (Thm {der = (_, proof), ...}) = proof; |
0 | 348 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
349 |
(*merge signatures of two theorems; raise exception if incompatible*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
350 |
fun merge_thm_sgs |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
351 |
(th1 as Thm {sign_ref = sgr1, ...}, th2 as Thm {sign_ref = sgr2, ...}) = |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
352 |
Sign.merge_refs (sgr1, sgr2) handle TERM (msg, _) => raise THM (msg, 0, [th1, th2]); |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
353 |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
354 |
(*transfer thm to super theory (non-destructive)*) |
4254 | 355 |
fun transfer_sg sign' thm = |
3895 | 356 |
let |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
357 |
val Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop} = thm; |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
358 |
val sign = Sign.deref sign_ref; |
3895 | 359 |
in |
4254 | 360 |
if Sign.eq_sg (sign, sign') then thm |
361 |
else if Sign.subsig (sign, sign') then |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
362 |
Thm {sign_ref = Sign.self_ref sign', der = der, maxidx = maxidx, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
363 |
shyps = shyps, hyps = hyps, tpairs = tpairs, prop = prop} |
3895 | 364 |
else raise THM ("transfer: not a super theory", 0, [thm]) |
365 |
end; |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
366 |
|
6390 | 367 |
val transfer = transfer_sg o Theory.sign_of; |
4254 | 368 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
369 |
(*maps object-rule to tpairs*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
370 |
fun tpairs_of (Thm {tpairs, ...}) = tpairs; |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
371 |
|
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
372 |
(*maps object-rule to premises*) |
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
373 |
fun prems_of (Thm {prop, ...}) = |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
374 |
Logic.strip_imp_prems prop; |
0 | 375 |
|
376 |
(*counts premises in a rule*) |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
377 |
fun nprems_of (Thm {prop, ...}) = |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
378 |
Logic.count_prems (prop, 0); |
0 | 379 |
|
8299 | 380 |
fun major_prem_of thm = |
381 |
(case prems_of thm of |
|
11692 | 382 |
prem :: _ => Logic.strip_assums_concl prem |
8299 | 383 |
| [] => raise THM ("major_prem_of: rule with no premises", 0, [thm])); |
384 |
||
7534 | 385 |
fun no_prems thm = nprems_of thm = 0; |
386 |
||
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
387 |
(*maps object-rule to conclusion*) |
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
388 |
fun concl_of (Thm {prop, ...}) = Logic.strip_imp_concl prop; |
0 | 389 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
390 |
(*the statement of any thm is a cterm*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
391 |
fun cprop_of (Thm {sign_ref, maxidx, prop, ...}) = |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
392 |
Cterm {sign_ref = sign_ref, maxidx = maxidx, T = propT, t = prop}; |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
393 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
394 |
|
0 | 395 |
|
1238 | 396 |
(** sort contexts of theorems **) |
397 |
||
398 |
(* basic utils *) |
|
399 |
||
2163 | 400 |
(*accumulate sorts suppressing duplicates; these are coded low levelly |
1238 | 401 |
to improve efficiency a bit*) |
402 |
||
403 |
fun add_typ_sorts (Type (_, Ts), Ss) = add_typs_sorts (Ts, Ss) |
|
14791 | 404 |
| add_typ_sorts (TFree (_, S), Ss) = Sorts.ins_sort(S,Ss) |
405 |
| add_typ_sorts (TVar (_, S), Ss) = Sorts.ins_sort(S,Ss) |
|
1238 | 406 |
and add_typs_sorts ([], Ss) = Ss |
407 |
| add_typs_sorts (T :: Ts, Ss) = add_typs_sorts (Ts, add_typ_sorts (T, Ss)); |
|
408 |
||
409 |
fun add_term_sorts (Const (_, T), Ss) = add_typ_sorts (T, Ss) |
|
410 |
| add_term_sorts (Free (_, T), Ss) = add_typ_sorts (T, Ss) |
|
411 |
| add_term_sorts (Var (_, T), Ss) = add_typ_sorts (T, Ss) |
|
412 |
| add_term_sorts (Bound _, Ss) = Ss |
|
2177
8b365a3a6ed1
Changed some mem, ins and union calls to be monomorphic
paulson
parents:
2163
diff
changeset
|
413 |
| add_term_sorts (Abs (_,T,t), Ss) = add_term_sorts (t, add_typ_sorts (T,Ss)) |
1238 | 414 |
| add_term_sorts (t $ u, Ss) = add_term_sorts (t, add_term_sorts (u, Ss)); |
415 |
||
416 |
fun add_terms_sorts ([], Ss) = Ss |
|
2177
8b365a3a6ed1
Changed some mem, ins and union calls to be monomorphic
paulson
parents:
2163
diff
changeset
|
417 |
| add_terms_sorts (t::ts, Ss) = add_terms_sorts (ts, add_term_sorts (t,Ss)); |
1238 | 418 |
|
15797 | 419 |
fun env_codT (Envir.Envir {iTs, ...}) = map (snd o snd) (Vartab.dest iTs); |
1258 | 420 |
|
8407
d522ad1809e9
Envir now uses Vartab instead of association lists.
berghofe
parents:
8299
diff
changeset
|
421 |
fun add_env_sorts (Envir.Envir {iTs, asol, ...}, Ss) = |
15797 | 422 |
Vartab.foldl (add_term_sorts o swap o apsnd (snd o snd)) |
423 |
(Vartab.foldl (add_typ_sorts o swap o apsnd (snd o snd)) (Ss, iTs), asol); |
|
1258 | 424 |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
425 |
fun add_insts_sorts ((iTs, is), Ss) = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
426 |
add_typs_sorts (map snd iTs, add_terms_sorts (map snd is, Ss)); |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
427 |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
428 |
fun add_thm_sorts (Thm {hyps, tpairs, prop, ...}, Ss) = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
429 |
add_terms_sorts (hyps @ terms_of_tpairs tpairs, add_term_sorts (prop, Ss)); |
1238 | 430 |
|
431 |
fun add_thms_shyps ([], Ss) = Ss |
|
432 |
| add_thms_shyps (Thm {shyps, ...} :: ths, Ss) = |
|
14791 | 433 |
add_thms_shyps (ths, Sorts.union_sort (shyps, Ss)); |
1238 | 434 |
|
435 |
||
436 |
(*get 'dangling' sort constraints of a thm*) |
|
437 |
fun extra_shyps (th as Thm {shyps, ...}) = |
|
14791 | 438 |
Sorts.rems_sort (shyps, add_thm_sorts (th, [])); |
1238 | 439 |
|
440 |
||
441 |
(* fix_shyps *) |
|
442 |
||
15570 | 443 |
fun all_sorts_nonempty sign_ref = isSome (Sign.universal_witness (Sign.deref sign_ref)); |
7642 | 444 |
|
1238 | 445 |
(*preserve sort contexts of rule premises and substituted types*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
446 |
fun fix_shyps thms Ts (thm as Thm {sign_ref, der, maxidx, hyps, tpairs, prop, ...}) = |
7642 | 447 |
Thm |
448 |
{sign_ref = sign_ref, |
|
449 |
der = der, (*no new derivation, as other rules call this*) |
|
450 |
maxidx = maxidx, |
|
451 |
shyps = |
|
452 |
if all_sorts_nonempty sign_ref then [] |
|
453 |
else add_thm_sorts (thm, add_typs_sorts (Ts, add_thms_shyps (thms, []))), |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
454 |
hyps = hyps, tpairs = tpairs, prop = prop} |
1238 | 455 |
|
456 |
||
7642 | 457 |
(* strip_shyps *) |
1238 | 458 |
|
7642 | 459 |
(*remove extra sorts that are non-empty by virtue of type signature information*) |
460 |
fun strip_shyps (thm as Thm {shyps = [], ...}) = thm |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
461 |
| strip_shyps (thm as Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop}) = |
7642 | 462 |
let |
463 |
val sign = Sign.deref sign_ref; |
|
1238 | 464 |
|
7642 | 465 |
val present_sorts = add_thm_sorts (thm, []); |
14791 | 466 |
val extra_shyps = Sorts.rems_sort (shyps, present_sorts); |
7642 | 467 |
val witnessed_shyps = Sign.witness_sorts sign present_sorts extra_shyps; |
468 |
in |
|
469 |
Thm {sign_ref = sign_ref, der = der, maxidx = maxidx, |
|
14791 | 470 |
shyps = Sorts.rems_sort (shyps, map #2 witnessed_shyps), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
471 |
hyps = hyps, tpairs = tpairs, prop = prop} |
7642 | 472 |
end; |
1238 | 473 |
|
474 |
||
475 |
||
1529 | 476 |
(** Axioms **) |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
477 |
|
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
478 |
(*look up the named axiom in the theory*) |
15672 | 479 |
fun get_axiom_i theory name = |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
480 |
let |
15531 | 481 |
fun get_ax [] = NONE |
1529 | 482 |
| get_ax (thy :: thys) = |
4847 | 483 |
let val {sign, axioms, ...} = Theory.rep_theory thy in |
484 |
(case Symtab.lookup (axioms, name) of |
|
15531 | 485 |
SOME t => |
486 |
SOME (fix_shyps [] [] |
|
4847 | 487 |
(Thm {sign_ref = Sign.self_ref sign, |
11518 | 488 |
der = Pt.infer_derivs' I |
489 |
(false, Pt.axm_proof name t), |
|
4847 | 490 |
maxidx = maxidx_of_term t, |
491 |
shyps = [], |
|
492 |
hyps = [], |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
493 |
tpairs = [], |
4847 | 494 |
prop = t})) |
15531 | 495 |
| NONE => get_ax thys) |
1529 | 496 |
end; |
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
497 |
in |
4847 | 498 |
(case get_ax (theory :: Theory.ancestors_of theory) of |
15531 | 499 |
SOME thm => thm |
500 |
| NONE => raise THEORY ("No axiom " ^ quote name, [theory])) |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
501 |
end; |
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
502 |
|
15672 | 503 |
fun get_axiom thy = get_axiom_i thy o Sign.intern (Theory.sign_of thy) Theory.axiomK; |
504 |
||
6368 | 505 |
fun def_name name = name ^ "_def"; |
506 |
fun get_def thy = get_axiom thy o def_name; |
|
4847 | 507 |
|
1529 | 508 |
|
776
df8f91c0e57c
improved axioms_of: returns thms as the manual says;
wenzelm
parents:
721
diff
changeset
|
509 |
(*return additional axioms of this theory node*) |
df8f91c0e57c
improved axioms_of: returns thms as the manual says;
wenzelm
parents:
721
diff
changeset
|
510 |
fun axioms_of thy = |
df8f91c0e57c
improved axioms_of: returns thms as the manual says;
wenzelm
parents:
721
diff
changeset
|
511 |
map (fn (s, _) => (s, get_axiom thy s)) |
6390 | 512 |
(Symtab.dest (#axioms (Theory.rep_theory thy))); |
776
df8f91c0e57c
improved axioms_of: returns thms as the manual says;
wenzelm
parents:
721
diff
changeset
|
513 |
|
6089 | 514 |
|
515 |
(* name and tags -- make proof objects more readable *) |
|
516 |
||
12923 | 517 |
fun get_name_tags (Thm {hyps, prop, der = (_, prf), ...}) = |
518 |
Pt.get_name_tags hyps prop prf; |
|
4018 | 519 |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
520 |
fun put_name_tags x (Thm {sign_ref, der = (ora, prf), maxidx, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
521 |
shyps, hyps, tpairs = [], prop}) = Thm {sign_ref = sign_ref, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
522 |
der = (ora, Pt.thm_proof (Sign.deref sign_ref) x hyps prop prf), |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
523 |
maxidx = maxidx, shyps = shyps, hyps = hyps, tpairs = [], prop = prop} |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
524 |
| put_name_tags _ thm = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
525 |
raise THM ("put_name_tags: unsolved flex-flex constraints", 0, [thm]); |
6089 | 526 |
|
527 |
val name_of_thm = #1 o get_name_tags; |
|
528 |
val tags_of_thm = #2 o get_name_tags; |
|
529 |
||
530 |
fun name_thm (name, thm) = put_name_tags (name, tags_of_thm thm) thm; |
|
0 | 531 |
|
532 |
||
1529 | 533 |
(*Compression of theorems -- a separate rule, not integrated with the others, |
534 |
as it could be slow.*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
535 |
fun compress (Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop}) = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
536 |
Thm {sign_ref = sign_ref, |
2386 | 537 |
der = der, (*No derivation recorded!*) |
538 |
maxidx = maxidx, |
|
539 |
shyps = shyps, |
|
540 |
hyps = map Term.compress_term hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
541 |
tpairs = map (pairself Term.compress_term) tpairs, |
2386 | 542 |
prop = Term.compress_term prop}; |
564 | 543 |
|
387
69f4356d915d
new datatype theory, supports 'draft theories' and incremental extension:
wenzelm
parents:
309
diff
changeset
|
544 |
|
2509 | 545 |
|
1529 | 546 |
(*** Meta rules ***) |
0 | 547 |
|
1220 | 548 |
(** 'primitive' rules **) |
549 |
||
550 |
(*discharge all assumptions t from ts*) |
|
0 | 551 |
val disch = gen_rem (op aconv); |
552 |
||
1220 | 553 |
(*The assumption rule A|-A in a theory*) |
5344 | 554 |
fun assume raw_ct : thm = |
555 |
let val ct as Cterm {sign_ref, t=prop, T, maxidx} = adjust_maxidx raw_ct |
|
250 | 556 |
in if T<>propT then |
557 |
raise THM("assume: assumptions must have type prop", 0, []) |
|
0 | 558 |
else if maxidx <> ~1 then |
250 | 559 |
raise THM("assume: assumptions may not contain scheme variables", |
560 |
maxidx, []) |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
561 |
else Thm{sign_ref = sign_ref, |
11518 | 562 |
der = Pt.infer_derivs' I (false, Pt.Hyp prop), |
2386 | 563 |
maxidx = ~1, |
564 |
shyps = add_term_sorts(prop,[]), |
|
565 |
hyps = [prop], |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
566 |
tpairs = [], |
2386 | 567 |
prop = prop} |
0 | 568 |
end; |
569 |
||
1220 | 570 |
(*Implication introduction |
3529 | 571 |
[A] |
572 |
: |
|
573 |
B |
|
1220 | 574 |
------- |
575 |
A ==> B |
|
576 |
*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
577 |
fun implies_intr cA (thB as Thm{sign_ref,der,maxidx,hyps,shyps,tpairs,prop}) : thm = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
578 |
let val Cterm {sign_ref=sign_refA, t=A, T, maxidx=maxidxA} = cA |
0 | 579 |
in if T<>propT then |
250 | 580 |
raise THM("implies_intr: assumptions must have type prop", 0, [thB]) |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
581 |
else |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
582 |
Thm{sign_ref = Sign.merge_refs (sign_ref,sign_refA), |
11518 | 583 |
der = Pt.infer_derivs' (Pt.implies_intr_proof A) der, |
2386 | 584 |
maxidx = Int.max(maxidxA, maxidx), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
585 |
shyps = add_term_sorts (A, shyps), |
2386 | 586 |
hyps = disch(hyps,A), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
587 |
tpairs = tpairs, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
588 |
prop = implies$A$prop} |
0 | 589 |
handle TERM _ => |
590 |
raise THM("implies_intr: incompatible signatures", 0, [thB]) |
|
591 |
end; |
|
592 |
||
1529 | 593 |
|
1220 | 594 |
(*Implication elimination |
595 |
A ==> B A |
|
596 |
------------ |
|
597 |
B |
|
598 |
*) |
|
0 | 599 |
fun implies_elim thAB thA : thm = |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
600 |
let val Thm{maxidx=maxA, der=derA, hyps=hypsA, shyps=shypsA, tpairs=tpairsA, prop=propA, ...} = thA |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
601 |
and Thm{der, maxidx, hyps, shyps, tpairs, prop, ...} = thAB; |
250 | 602 |
fun err(a) = raise THM("implies_elim: "^a, 0, [thAB,thA]) |
0 | 603 |
in case prop of |
250 | 604 |
imp$A$B => |
605 |
if imp=implies andalso A aconv propA |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
606 |
then |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
607 |
Thm{sign_ref= merge_thm_sgs(thAB,thA), |
11612 | 608 |
der = Pt.infer_derivs (curry Pt.%%) der derA, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
609 |
maxidx = Int.max(maxA,maxidx), |
14791 | 610 |
shyps = Sorts.union_sort (shypsA, shyps), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
611 |
hyps = union_term(hypsA,hyps), (*dups suppressed*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
612 |
tpairs = tpairsA @ tpairs, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
613 |
prop = B} |
250 | 614 |
else err("major premise") |
615 |
| _ => err("major premise") |
|
0 | 616 |
end; |
250 | 617 |
|
1220 | 618 |
(*Forall introduction. The Free or Var x must not be free in the hypotheses. |
619 |
A |
|
620 |
----- |
|
621 |
!!x.A |
|
622 |
*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
623 |
fun forall_intr cx (th as Thm{sign_ref,der,maxidx,hyps,tpairs,prop,...}) = |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
624 |
let val x = term_of cx; |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
625 |
fun result a T = fix_shyps [th] [] |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
626 |
(Thm{sign_ref = sign_ref, |
11518 | 627 |
der = Pt.infer_derivs' (Pt.forall_intr_proof x a) der, |
2386 | 628 |
maxidx = maxidx, |
629 |
shyps = [], |
|
630 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
631 |
tpairs = tpairs, |
2386 | 632 |
prop = all(T) $ Abs(a, T, abstract_over (x,prop))}) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
633 |
fun check_occs x ts = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
634 |
if exists (apl(x, Logic.occs)) ts |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
635 |
then raise THM("forall_intr: variable free in assumptions", 0, [th]) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
636 |
else () |
0 | 637 |
in case x of |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
638 |
Free(a,T) => (check_occs x (hyps @ terms_of_tpairs tpairs); result a T) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
639 |
| Var((a,_),T) => (check_occs x (terms_of_tpairs tpairs); result a T) |
0 | 640 |
| _ => raise THM("forall_intr: not a variable", 0, [th]) |
641 |
end; |
|
642 |
||
1220 | 643 |
(*Forall elimination |
644 |
!!x.A |
|
645 |
------ |
|
646 |
A[t/x] |
|
647 |
*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
648 |
fun forall_elim ct (th as Thm{sign_ref,der,maxidx,hyps,tpairs,prop,...}) : thm = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
649 |
let val Cterm {sign_ref=sign_reft, t, T, maxidx=maxt} = ct |
0 | 650 |
in case prop of |
2386 | 651 |
Const("all",Type("fun",[Type("fun",[qary,_]),_])) $ A => |
652 |
if T<>qary then |
|
653 |
raise THM("forall_elim: type mismatch", 0, [th]) |
|
15797 | 654 |
else fix_shyps [th] [] |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
655 |
(Thm{sign_ref= Sign.merge_refs(sign_ref,sign_reft), |
15531 | 656 |
der = Pt.infer_derivs' (Pt.% o rpair (SOME t)) der, |
2386 | 657 |
maxidx = Int.max(maxidx, maxt), |
658 |
shyps = [], |
|
659 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
660 |
tpairs = tpairs, |
2386 | 661 |
prop = betapply(A,t)}) |
2147 | 662 |
| _ => raise THM("forall_elim: not quantified", 0, [th]) |
0 | 663 |
end |
664 |
handle TERM _ => |
|
250 | 665 |
raise THM("forall_elim: incompatible signatures", 0, [th]); |
0 | 666 |
|
667 |
||
1220 | 668 |
(* Equality *) |
0 | 669 |
|
670 |
(*The reflexivity rule: maps t to the theorem t==t *) |
|
250 | 671 |
fun reflexive ct = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
672 |
let val Cterm {sign_ref, t, T, maxidx} = ct |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
673 |
in Thm{sign_ref= sign_ref, |
11518 | 674 |
der = Pt.infer_derivs' I (false, Pt.reflexive), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
675 |
shyps = add_term_sorts (t, []), |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
676 |
hyps = [], |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
677 |
maxidx = maxidx, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
678 |
tpairs = [], |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
679 |
prop = Logic.mk_equals(t,t)} |
0 | 680 |
end; |
681 |
||
682 |
(*The symmetry rule |
|
1220 | 683 |
t==u |
684 |
---- |
|
685 |
u==t |
|
686 |
*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
687 |
fun symmetric (th as Thm{sign_ref,der,maxidx,shyps,hyps,tpairs,prop}) = |
0 | 688 |
case prop of |
11518 | 689 |
(eq as Const("==", Type (_, [T, _]))) $ t $ u => |
1238 | 690 |
(*no fix_shyps*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
691 |
Thm{sign_ref = sign_ref, |
11518 | 692 |
der = Pt.infer_derivs' Pt.symmetric der, |
2386 | 693 |
maxidx = maxidx, |
694 |
shyps = shyps, |
|
695 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
696 |
tpairs = tpairs, |
2386 | 697 |
prop = eq$u$t} |
0 | 698 |
| _ => raise THM("symmetric", 0, [th]); |
699 |
||
700 |
(*The transitive rule |
|
1220 | 701 |
t1==u u==t2 |
702 |
-------------- |
|
703 |
t1==t2 |
|
704 |
*) |
|
0 | 705 |
fun transitive th1 th2 = |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
706 |
let val Thm{der=der1, maxidx=max1, hyps=hyps1, shyps=shyps1, tpairs=tpairs1, prop=prop1,...} = th1 |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
707 |
and Thm{der=der2, maxidx=max2, hyps=hyps2, shyps=shyps2, tpairs=tpairs2, prop=prop2,...} = th2; |
0 | 708 |
fun err(msg) = raise THM("transitive: "^msg, 0, [th1,th2]) |
709 |
in case (prop1,prop2) of |
|
11518 | 710 |
((eq as Const("==", Type (_, [T, _]))) $ t1 $ u, Const("==",_) $ u' $ t2) => |
1634 | 711 |
if not (u aconv u') then err"middle term" |
15797 | 712 |
else |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
713 |
Thm{sign_ref= merge_thm_sgs(th1,th2), |
11518 | 714 |
der = Pt.infer_derivs (Pt.transitive u T) der1 der2, |
2147 | 715 |
maxidx = Int.max(max1,max2), |
14791 | 716 |
shyps = Sorts.union_sort (shyps1, shyps2), |
2386 | 717 |
hyps = union_term(hyps1,hyps2), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
718 |
tpairs = tpairs1 @ tpairs2, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
719 |
prop = eq$t1$t2} |
0 | 720 |
| _ => err"premises" |
721 |
end; |
|
722 |
||
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
723 |
(*Beta-conversion: maps (%x.t)(u) to the theorem (%x.t)(u) == t[u/x] |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
724 |
Fully beta-reduces the term if full=true |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
725 |
*) |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
726 |
fun beta_conversion full ct = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
727 |
let val Cterm {sign_ref, t, T, maxidx} = ct |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
728 |
in Thm |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
729 |
{sign_ref = sign_ref, |
11518 | 730 |
der = Pt.infer_derivs' I (false, Pt.reflexive), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
731 |
maxidx = maxidx, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
732 |
shyps = add_term_sorts (t, []), |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
733 |
hyps = [], |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
734 |
tpairs = [], |
10486 | 735 |
prop = Logic.mk_equals (t, if full then Envir.beta_norm t |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
736 |
else case t of |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
737 |
Abs(_, _, bodt) $ u => subst_bound (u, bodt) |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
738 |
| _ => raise THM ("beta_conversion: not a redex", 0, []))} |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
739 |
end; |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
740 |
|
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
741 |
fun eta_conversion ct = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
742 |
let val Cterm {sign_ref, t, T, maxidx} = ct |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
743 |
in Thm |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
744 |
{sign_ref = sign_ref, |
11518 | 745 |
der = Pt.infer_derivs' I (false, Pt.reflexive), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
746 |
maxidx = maxidx, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
747 |
shyps = add_term_sorts (t, []), |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
748 |
hyps = [], |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
749 |
tpairs = [], |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
750 |
prop = Logic.mk_equals (t, Pattern.eta_contract t)} |
0 | 751 |
end; |
752 |
||
753 |
(*The abstraction rule. The Free or Var x must not be free in the hypotheses. |
|
754 |
The bound variable will be named "a" (since x will be something like x320) |
|
1220 | 755 |
t == u |
756 |
------------ |
|
757 |
%x.t == %x.u |
|
758 |
*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
759 |
fun abstract_rule a cx (th as Thm{sign_ref,der,maxidx,hyps,shyps,tpairs,prop}) = |
229
4002c4cd450c
Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents:
225
diff
changeset
|
760 |
let val x = term_of cx; |
250 | 761 |
val (t,u) = Logic.dest_equals prop |
762 |
handle TERM _ => |
|
763 |
raise THM("abstract_rule: premise not an equality", 0, [th]) |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
764 |
fun result T = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
765 |
Thm{sign_ref = sign_ref, |
11518 | 766 |
der = Pt.infer_derivs' (Pt.abstract_rule x a) der, |
2386 | 767 |
maxidx = maxidx, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
768 |
shyps = add_typ_sorts (T, shyps), |
2386 | 769 |
hyps = hyps, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
770 |
tpairs = tpairs, |
2386 | 771 |
prop = Logic.mk_equals(Abs(a, T, abstract_over (x,t)), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
772 |
Abs(a, T, abstract_over (x,u)))} |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
773 |
fun check_occs x ts = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
774 |
if exists (apl(x, Logic.occs)) ts |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
775 |
then raise THM("abstract_rule: variable free in assumptions", 0, [th]) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
776 |
else () |
0 | 777 |
in case x of |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
778 |
Free(_,T) => (check_occs x (hyps @ terms_of_tpairs tpairs); result T) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
779 |
| Var(_,T) => (check_occs x (terms_of_tpairs tpairs); result T) |
0 | 780 |
| _ => raise THM("abstract_rule: not a variable", 0, [th]) |
781 |
end; |
|
782 |
||
783 |
(*The combination rule |
|
3529 | 784 |
f == g t == u |
785 |
-------------- |
|
786 |
f(t) == g(u) |
|
1220 | 787 |
*) |
0 | 788 |
fun combination th1 th2 = |
1529 | 789 |
let val Thm{der=der1, maxidx=max1, shyps=shyps1, hyps=hyps1, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
790 |
tpairs=tpairs1, prop=prop1,...} = th1 |
1529 | 791 |
and Thm{der=der2, maxidx=max2, shyps=shyps2, hyps=hyps2, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
792 |
tpairs=tpairs2, prop=prop2,...} = th2 |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
793 |
fun chktypes fT tT = |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
794 |
(case fT of |
2386 | 795 |
Type("fun",[T1,T2]) => |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
796 |
if T1 <> tT then |
2386 | 797 |
raise THM("combination: types", 0, [th1,th2]) |
798 |
else () |
|
799 |
| _ => raise THM("combination: not function type", 0, |
|
800 |
[th1,th2])) |
|
1495
b8b54847c77f
Added check for duplicate vars with distinct types/sorts (nodup_Vars)
nipkow
parents:
1493
diff
changeset
|
801 |
in case (prop1,prop2) of |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
802 |
(Const ("==", Type ("fun", [fT, _])) $ f $ g, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
803 |
Const ("==", Type ("fun", [tT, _])) $ t $ u) => |
15797 | 804 |
(chktypes fT tT; |
805 |
(*no fix_shyps*) |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
806 |
Thm{sign_ref = merge_thm_sgs(th1,th2), |
11518 | 807 |
der = Pt.infer_derivs |
808 |
(Pt.combination f g t u fT) der1 der2, |
|
2386 | 809 |
maxidx = Int.max(max1,max2), |
14791 | 810 |
shyps = Sorts.union_sort(shyps1,shyps2), |
2386 | 811 |
hyps = union_term(hyps1,hyps2), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
812 |
tpairs = tpairs1 @ tpairs2, |
15797 | 813 |
prop = Logic.mk_equals(f$t, g$u)}) |
0 | 814 |
| _ => raise THM("combination: premises", 0, [th1,th2]) |
815 |
end; |
|
816 |
||
817 |
||
818 |
(* Equality introduction |
|
3529 | 819 |
A ==> B B ==> A |
820 |
---------------- |
|
821 |
A == B |
|
1220 | 822 |
*) |
0 | 823 |
fun equal_intr th1 th2 = |
11518 | 824 |
let val Thm{der=der1, maxidx=max1, shyps=shyps1, hyps=hyps1, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
825 |
tpairs=tpairs1, prop=prop1,...} = th1 |
1529 | 826 |
and Thm{der=der2, maxidx=max2, shyps=shyps2, hyps=hyps2, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
827 |
tpairs=tpairs2, prop=prop2,...} = th2; |
1529 | 828 |
fun err(msg) = raise THM("equal_intr: "^msg, 0, [th1,th2]) |
829 |
in case (prop1,prop2) of |
|
830 |
(Const("==>",_) $ A $ B, Const("==>",_) $ B' $ A') => |
|
2386 | 831 |
if A aconv A' andalso B aconv B' |
832 |
then |
|
833 |
(*no fix_shyps*) |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
834 |
Thm{sign_ref = merge_thm_sgs(th1,th2), |
11518 | 835 |
der = Pt.infer_derivs (Pt.equal_intr A B) der1 der2, |
2386 | 836 |
maxidx = Int.max(max1,max2), |
14791 | 837 |
shyps = Sorts.union_sort(shyps1,shyps2), |
2386 | 838 |
hyps = union_term(hyps1,hyps2), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
839 |
tpairs = tpairs1 @ tpairs2, |
2386 | 840 |
prop = Logic.mk_equals(A,B)} |
841 |
else err"not equal" |
|
1529 | 842 |
| _ => err"premises" |
843 |
end; |
|
844 |
||
845 |
||
846 |
(*The equal propositions rule |
|
3529 | 847 |
A == B A |
1529 | 848 |
--------- |
849 |
B |
|
850 |
*) |
|
851 |
fun equal_elim th1 th2 = |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
852 |
let val Thm{der=der1, maxidx=max1, hyps=hyps1, tpairs=tpairs1, prop=prop1,...} = th1 |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
853 |
and Thm{der=der2, maxidx=max2, hyps=hyps2, tpairs=tpairs2, prop=prop2,...} = th2; |
1529 | 854 |
fun err(msg) = raise THM("equal_elim: "^msg, 0, [th1,th2]) |
855 |
in case prop1 of |
|
856 |
Const("==",_) $ A $ B => |
|
857 |
if not (prop2 aconv A) then err"not equal" else |
|
858 |
fix_shyps [th1, th2] [] |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
859 |
(Thm{sign_ref= merge_thm_sgs(th1,th2), |
11518 | 860 |
der = Pt.infer_derivs (Pt.equal_elim A B) der1 der2, |
2386 | 861 |
maxidx = Int.max(max1,max2), |
862 |
shyps = [], |
|
863 |
hyps = union_term(hyps1,hyps2), |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
864 |
tpairs = tpairs1 @ tpairs2, |
2386 | 865 |
prop = B}) |
1529 | 866 |
| _ => err"major premise" |
867 |
end; |
|
0 | 868 |
|
1220 | 869 |
|
870 |
||
0 | 871 |
(**** Derived rules ****) |
872 |
||
1503 | 873 |
(*Discharge all hypotheses. Need not verify cterms or call fix_shyps. |
0 | 874 |
Repeated hypotheses are discharged only once; fold cannot do this*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
875 |
fun implies_intr_hyps (Thm{sign_ref, der, maxidx, shyps, hyps=A::As, tpairs, prop}) = |
1238 | 876 |
implies_intr_hyps (*no fix_shyps*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
877 |
(Thm{sign_ref = sign_ref, |
11518 | 878 |
der = Pt.infer_derivs' (Pt.implies_intr_proof A) der, |
2386 | 879 |
maxidx = maxidx, |
880 |
shyps = shyps, |
|
1529 | 881 |
hyps = disch(As,A), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
882 |
tpairs = tpairs, |
2386 | 883 |
prop = implies$A$prop}) |
0 | 884 |
| implies_intr_hyps th = th; |
885 |
||
886 |
(*Smash" unifies the list of term pairs leaving no flex-flex pairs. |
|
250 | 887 |
Instantiates the theorem and deletes trivial tpairs. |
0 | 888 |
Resulting sequence may contain multiple elements if the tpairs are |
889 |
not all flex-flex. *) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
890 |
fun flexflex_rule (th as Thm{sign_ref, der, maxidx, hyps, tpairs, prop, ...}) = |
250 | 891 |
let fun newthm env = |
1529 | 892 |
if Envir.is_empty env then th |
893 |
else |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
894 |
let val ntpairs = map (pairself (Envir.norm_term env)) tpairs; |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
895 |
val newprop = Envir.norm_term env prop; |
250 | 896 |
(*Remove trivial tpairs, of the form t=t*) |
15570 | 897 |
val distpairs = List.filter (not o op aconv) ntpairs |
1220 | 898 |
in fix_shyps [th] (env_codT env) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
899 |
(Thm{sign_ref = sign_ref, |
11518 | 900 |
der = Pt.infer_derivs' (Pt.norm_proof' env) der, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
901 |
maxidx = maxidx_of_terms (newprop :: |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
902 |
terms_of_tpairs distpairs), |
2386 | 903 |
shyps = [], |
904 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
905 |
tpairs = distpairs, |
2386 | 906 |
prop = newprop}) |
250 | 907 |
end; |
4270 | 908 |
in Seq.map newthm |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
909 |
(Unify.smash_unifiers(Sign.deref sign_ref, Envir.empty maxidx, tpairs)) |
0 | 910 |
end; |
911 |
||
912 |
(*Instantiation of Vars |
|
1220 | 913 |
A |
914 |
------------------- |
|
915 |
A[t1/v1,....,tn/vn] |
|
916 |
*) |
|
0 | 917 |
|
6928 | 918 |
local |
919 |
||
0 | 920 |
(*Check that all the terms are Vars and are distinct*) |
921 |
fun instl_ok ts = forall is_Var ts andalso null(findrep ts); |
|
922 |
||
6928 | 923 |
fun prt_typing sg_ref t T = |
924 |
let val sg = Sign.deref sg_ref in |
|
925 |
Pretty.block [Sign.pretty_term sg t, Pretty.str " ::", Pretty.brk 1, Sign.pretty_typ sg T] |
|
926 |
end; |
|
927 |
||
15797 | 928 |
fun prt_type sg_ref T = Sign.pretty_typ (Sign.deref sg_ref) T; |
929 |
||
0 | 930 |
(*For instantiate: process pair of cterms, merge theories*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
931 |
fun add_ctpair ((ct,cu), (sign_ref,tpairs)) = |
6928 | 932 |
let |
933 |
val Cterm {sign_ref=sign_reft, t=t, T= T, ...} = ct |
|
934 |
and Cterm {sign_ref=sign_refu, t=u, T= U, ...} = cu; |
|
935 |
val sign_ref_merged = Sign.merge_refs (sign_ref, Sign.merge_refs (sign_reft, sign_refu)); |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
936 |
in |
6928 | 937 |
if T=U then (sign_ref_merged, (t,u)::tpairs) |
938 |
else raise TYPE (Pretty.string_of (Pretty.block [Pretty.str "instantiate: type conflict", |
|
939 |
Pretty.fbrk, prt_typing sign_ref_merged t T, |
|
940 |
Pretty.fbrk, prt_typing sign_ref_merged u U]), [T,U], [t,u]) |
|
0 | 941 |
end; |
942 |
||
15797 | 943 |
fun add_ctyp ((Ctyp {T = T as TVar (_, S), sign_ref = sign_refT}, |
944 |
Ctyp {T = U, sign_ref = sign_refU}), (sign_ref, vTs)) = |
|
945 |
let |
|
946 |
val sign_ref_merged = Sign.merge_refs |
|
947 |
(sign_ref, Sign.merge_refs (sign_refT, sign_refU)); |
|
948 |
val sign = Sign.deref sign_ref_merged |
|
949 |
in |
|
950 |
if Type.of_sort (Sign.tsig_of sign) (U, S) then |
|
951 |
(sign_ref_merged, (T, U) :: vTs) |
|
952 |
else raise TYPE ("Type not of sort " ^ |
|
953 |
Sign.string_of_sort sign S, [U], []) |
|
954 |
end |
|
955 |
| add_ctyp ((Ctyp {T, sign_ref}, _), _) = |
|
956 |
raise TYPE (Pretty.string_of (Pretty.block |
|
957 |
[Pretty.str "instantiate: not a type variable", |
|
958 |
Pretty.fbrk, prt_type sign_ref T]), [T], []); |
|
0 | 959 |
|
6928 | 960 |
in |
961 |
||
0 | 962 |
(*Left-to-right replacements: ctpairs = [...,(vi,ti),...]. |
963 |
Instantiates distinct Vars by terms of same type. |
|
8129
29e239c7b8c2
Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents:
8066
diff
changeset
|
964 |
No longer normalizes the new theorem! *) |
1529 | 965 |
fun instantiate ([], []) th = th |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
966 |
| instantiate (vcTs,ctpairs) (th as Thm{sign_ref,der,maxidx,hyps,shyps,tpairs=dpairs,prop}) = |
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
967 |
let val (newsign_ref,tpairs) = foldr add_ctpair (sign_ref,[]) ctpairs; |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
968 |
val (newsign_ref,vTs) = foldr add_ctyp (newsign_ref,[]) vcTs; |
14828 | 969 |
fun subst t = |
15797 | 970 |
subst_atomic tpairs (map_term_types (typ_subst_atomic vTs) t); |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
971 |
val newprop = subst prop; |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
972 |
val newdpairs = map (pairself subst) dpairs; |
1220 | 973 |
val newth = |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
974 |
(Thm{sign_ref = newsign_ref, |
11518 | 975 |
der = Pt.infer_derivs' (Pt.instantiate vTs tpairs) der, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
976 |
maxidx = maxidx_of_terms (newprop :: |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
977 |
terms_of_tpairs newdpairs), |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
978 |
shyps = add_insts_sorts ((vTs, tpairs), shyps), |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
979 |
hyps = hyps, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
980 |
tpairs = newdpairs, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
981 |
prop = newprop}) |
250 | 982 |
in if not(instl_ok(map #1 tpairs)) |
193 | 983 |
then raise THM("instantiate: variables not distinct", 0, [th]) |
984 |
else if not(null(findrep(map #1 vTs))) |
|
985 |
then raise THM("instantiate: type variables not distinct", 0, [th]) |
|
15797 | 986 |
else newth |
0 | 987 |
end |
6928 | 988 |
handle TERM _ => raise THM("instantiate: incompatible signatures", 0, [th]) |
989 |
| TYPE (msg, _, _) => raise THM (msg, 0, [th]); |
|
990 |
||
991 |
end; |
|
992 |
||
0 | 993 |
|
994 |
(*The trivial implication A==>A, justified by assume and forall rules. |
|
995 |
A can contain Vars, not so for assume! *) |
|
250 | 996 |
fun trivial ct : thm = |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
997 |
let val Cterm {sign_ref, t=A, T, maxidx} = ct |
250 | 998 |
in if T<>propT then |
999 |
raise THM("trivial: the term must have type prop", 0, []) |
|
1238 | 1000 |
else fix_shyps [] [] |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1001 |
(Thm{sign_ref = sign_ref, |
15531 | 1002 |
der = Pt.infer_derivs' I (false, Pt.AbsP ("H", NONE, Pt.PBound 0)), |
2386 | 1003 |
maxidx = maxidx, |
1004 |
shyps = [], |
|
1005 |
hyps = [], |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1006 |
tpairs = [], |
2386 | 1007 |
prop = implies$A$A}) |
0 | 1008 |
end; |
1009 |
||
1503 | 1010 |
(*Axiom-scheme reflecting signature contents: "OFCLASS(?'a::c, c_class)" *) |
6368 | 1011 |
fun class_triv sign c = |
1012 |
let val Cterm {sign_ref, t, maxidx, ...} = |
|
1013 |
cterm_of sign (Logic.mk_inclass (TVar (("'a", 0), [c]), c)) |
|
1014 |
handle TERM (msg, _) => raise THM ("class_triv: " ^ msg, 0, []); |
|
399
86cc2b98f9e0
added class_triv: theory -> class -> thm (for axclasses);
wenzelm
parents:
387
diff
changeset
|
1015 |
in |
1238 | 1016 |
fix_shyps [] [] |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1017 |
(Thm {sign_ref = sign_ref, |
11518 | 1018 |
der = Pt.infer_derivs' I |
15531 | 1019 |
(false, Pt.PAxm ("ProtoPure.class_triv:" ^ c, t, SOME [])), |
2386 | 1020 |
maxidx = maxidx, |
1021 |
shyps = [], |
|
1022 |
hyps = [], |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1023 |
tpairs = [], |
2386 | 1024 |
prop = t}) |
399
86cc2b98f9e0
added class_triv: theory -> class -> thm (for axclasses);
wenzelm
parents:
387
diff
changeset
|
1025 |
end; |
86cc2b98f9e0
added class_triv: theory -> class -> thm (for axclasses);
wenzelm
parents:
387
diff
changeset
|
1026 |
|
86cc2b98f9e0
added class_triv: theory -> class -> thm (for axclasses);
wenzelm
parents:
387
diff
changeset
|
1027 |
|
6786 | 1028 |
(* Replace all TFrees not fixed or in the hyps by new TVars *) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1029 |
fun varifyT' fixed (Thm{sign_ref,der,maxidx,shyps,hyps,tpairs,prop}) = |
12500 | 1030 |
let |
15797 | 1031 |
val tfrees = foldr add_term_tfrees fixed hyps; |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1032 |
val prop1 = attach_tpairs tpairs prop; |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1033 |
val (prop2, al) = Type.varify (prop1, tfrees); |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1034 |
val (ts, prop3) = Logic.strip_prems (length tpairs, [], prop2) |
15797 | 1035 |
in (*no fix_shyps*) |
1036 |
(Thm{sign_ref = sign_ref, |
|
11518 | 1037 |
der = Pt.infer_derivs' (Pt.varify_proof prop tfrees) der, |
2386 | 1038 |
maxidx = Int.max(0,maxidx), |
1039 |
shyps = shyps, |
|
1040 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1041 |
tpairs = rev (map Logic.dest_equals ts), |
15797 | 1042 |
prop = prop3}, al) |
0 | 1043 |
end; |
1044 |
||
12500 | 1045 |
val varifyT = #1 o varifyT' []; |
6786 | 1046 |
|
0 | 1047 |
(* Replace all TVars by new TFrees *) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1048 |
fun freezeT(Thm{sign_ref,der,maxidx,shyps,hyps,tpairs,prop}) = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1049 |
let |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1050 |
val prop1 = attach_tpairs tpairs prop; |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1051 |
val (prop2, _) = Type.freeze_thaw prop1; |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1052 |
val (ts, prop3) = Logic.strip_prems (length tpairs, [], prop2) |
1238 | 1053 |
in (*no fix_shyps*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1054 |
Thm{sign_ref = sign_ref, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1055 |
der = Pt.infer_derivs' (Pt.freezeT prop1) der, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1056 |
maxidx = maxidx_of_term prop2, |
2386 | 1057 |
shyps = shyps, |
1058 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1059 |
tpairs = rev (map Logic.dest_equals ts), |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1060 |
prop = prop3} |
1220 | 1061 |
end; |
0 | 1062 |
|
1063 |
||
1064 |
(*** Inference rules for tactics ***) |
|
1065 |
||
1066 |
(*Destruct proof state into constraints, other goals, goal(i), rest *) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1067 |
fun dest_state (state as Thm{prop,tpairs,...}, i) = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1068 |
(case Logic.strip_prems(i, [], prop) of |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1069 |
(B::rBs, C) => (tpairs, rev rBs, B, C) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1070 |
| _ => raise THM("dest_state", i, [state])) |
0 | 1071 |
handle TERM _ => raise THM("dest_state", i, [state]); |
1072 |
||
309 | 1073 |
(*Increment variables and parameters of orule as required for |
0 | 1074 |
resolution with goal i of state. *) |
1075 |
fun lift_rule (state, i) orule = |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1076 |
let val Thm{shyps=sshyps, prop=sprop, maxidx=smax, sign_ref=ssign_ref,...} = state |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1077 |
val (Bi::_, _) = Logic.strip_prems(i, [], sprop) |
1529 | 1078 |
handle TERM _ => raise THM("lift_rule", i, [orule,state]) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1079 |
val ct_Bi = Cterm {sign_ref=ssign_ref, maxidx=smax, T=propT, t=Bi} |
1529 | 1080 |
val (lift_abs,lift_all) = Logic.lift_fns(Bi,smax+1) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1081 |
val (Thm{sign_ref, der, maxidx,shyps,hyps,tpairs,prop}) = orule |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1082 |
val (As, B) = Logic.strip_horn prop |
1238 | 1083 |
in (*no fix_shyps*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1084 |
Thm{sign_ref = merge_thm_sgs(state,orule), |
11518 | 1085 |
der = Pt.infer_derivs' (Pt.lift_proof Bi (smax+1) prop) der, |
2386 | 1086 |
maxidx = maxidx+smax+1, |
14791 | 1087 |
shyps = Sorts.union_sort(sshyps,shyps), |
1088 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1089 |
tpairs = map (pairself lift_abs) tpairs, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1090 |
prop = Logic.list_implies (map lift_all As, lift_all B)} |
0 | 1091 |
end; |
1092 |
||
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1093 |
fun incr_indexes i (thm as Thm {sign_ref, der, maxidx, shyps, hyps, tpairs, prop}) = |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1094 |
if i < 0 then raise THM ("negative increment", 0, [thm]) else |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1095 |
if i = 0 then thm else |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1096 |
Thm {sign_ref = sign_ref, |
11518 | 1097 |
der = Pt.infer_derivs' (Pt.map_proof_terms |
1098 |
(Logic.incr_indexes ([], i)) (incr_tvar i)) der, |
|
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1099 |
maxidx = maxidx + i, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1100 |
shyps = shyps, |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1101 |
hyps = hyps, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1102 |
tpairs = map (pairself (Logic.incr_indexes ([], i))) tpairs, |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1103 |
prop = Logic.incr_indexes ([], i) prop}; |
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1104 |
|
0 | 1105 |
(*Solve subgoal Bi of proof state B1...Bn/C by assumption. *) |
1106 |
fun assumption i state = |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1107 |
let val Thm{sign_ref,der,maxidx,hyps,prop,...} = state; |
0 | 1108 |
val (tpairs, Bs, Bi, C) = dest_state(state,i) |
11518 | 1109 |
fun newth n (env as Envir.Envir{maxidx, ...}, tpairs) = |
1220 | 1110 |
fix_shyps [state] (env_codT env) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1111 |
(Thm{sign_ref = sign_ref, |
11518 | 1112 |
der = Pt.infer_derivs' |
1113 |
((if Envir.is_empty env then I else (Pt.norm_proof' env)) o |
|
1114 |
Pt.assumption_proof Bs Bi n) der, |
|
2386 | 1115 |
maxidx = maxidx, |
1116 |
shyps = [], |
|
1117 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1118 |
tpairs = if Envir.is_empty env then tpairs else |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1119 |
map (pairself (Envir.norm_term env)) tpairs, |
2386 | 1120 |
prop = |
1121 |
if Envir.is_empty env then (*avoid wasted normalizations*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1122 |
Logic.list_implies (Bs, C) |
2386 | 1123 |
else (*normalize the new rule fully*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1124 |
Envir.norm_term env (Logic.list_implies (Bs, C))}); |
11518 | 1125 |
fun addprfs [] _ = Seq.empty |
1126 |
| addprfs ((t,u)::apairs) n = Seq.make (fn()=> Seq.pull |
|
1127 |
(Seq.mapp (newth n) |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1128 |
(Unify.unifiers(Sign.deref sign_ref,Envir.empty maxidx, (t,u)::tpairs)) |
11518 | 1129 |
(addprfs apairs (n+1)))) |
15454 | 1130 |
in addprfs (Logic.assum_pairs (~1,Bi)) 1 end; |
0 | 1131 |
|
250 | 1132 |
(*Solve subgoal Bi of proof state B1...Bn/C by assumption. |
0 | 1133 |
Checks if Bi's conclusion is alpha-convertible to one of its assumptions*) |
1134 |
fun eq_assumption i state = |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1135 |
let val Thm{sign_ref,der,maxidx,hyps,prop,...} = state; |
0 | 1136 |
val (tpairs, Bs, Bi, C) = dest_state(state,i) |
15454 | 1137 |
in (case find_index (op aconv) (Logic.assum_pairs (~1,Bi)) of |
11518 | 1138 |
(~1) => raise THM("eq_assumption", 0, [state]) |
1139 |
| n => fix_shyps [state] [] |
|
1140 |
(Thm{sign_ref = sign_ref, |
|
1141 |
der = Pt.infer_derivs' |
|
1142 |
(Pt.assumption_proof Bs Bi (n+1)) der, |
|
1143 |
maxidx = maxidx, |
|
1144 |
shyps = [], |
|
1145 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1146 |
tpairs = tpairs, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1147 |
prop = Logic.list_implies (Bs, C)})) |
0 | 1148 |
end; |
1149 |
||
1150 |
||
2671 | 1151 |
(*For rotate_tac: fast rotation of assumptions of subgoal i*) |
1152 |
fun rotate_rule k i state = |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1153 |
let val Thm{sign_ref,der,maxidx,hyps,prop,shyps,...} = state; |
2671 | 1154 |
val (tpairs, Bs, Bi, C) = dest_state(state,i) |
8066
54d37e491ac2
SOUNDNESS BUG FIX for rotate_rule. The original code did not expect
paulson
parents:
7921
diff
changeset
|
1155 |
val params = Term.strip_all_vars Bi |
54d37e491ac2
SOUNDNESS BUG FIX for rotate_rule. The original code did not expect
paulson
parents:
7921
diff
changeset
|
1156 |
and rest = Term.strip_all_body Bi |
54d37e491ac2
SOUNDNESS BUG FIX for rotate_rule. The original code did not expect
paulson
parents:
7921
diff
changeset
|
1157 |
val asms = Logic.strip_imp_prems rest |
54d37e491ac2
SOUNDNESS BUG FIX for rotate_rule. The original code did not expect
paulson
parents:
7921
diff
changeset
|
1158 |
and concl = Logic.strip_imp_concl rest |
2671 | 1159 |
val n = length asms |
11563 | 1160 |
val m = if k<0 then n+k else k |
1161 |
val Bi' = if 0=m orelse m=n then Bi |
|
2671 | 1162 |
else if 0<m andalso m<n |
13629 | 1163 |
then let val (ps,qs) = splitAt(m,asms) |
1164 |
in list_all(params, Logic.list_implies(qs @ ps, concl)) |
|
1165 |
end |
|
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1166 |
else raise THM("rotate_rule", k, [state]) |
7264 | 1167 |
in (*no fix_shyps*) |
1168 |
Thm{sign_ref = sign_ref, |
|
11563 | 1169 |
der = Pt.infer_derivs' (Pt.rotate_proof Bs Bi m) der, |
2671 | 1170 |
maxidx = maxidx, |
1171 |
shyps = shyps, |
|
1172 |
hyps = hyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1173 |
tpairs = tpairs, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1174 |
prop = Logic.list_implies (Bs @ [Bi'], C)} |
2671 | 1175 |
end; |
1176 |
||
1177 |
||
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1178 |
(*Rotates a rule's premises to the left by k, leaving the first j premises |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1179 |
unchanged. Does nothing if k=0 or if k equals n-j, where n is the |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1180 |
number of premises. Useful with etac and underlies tactic/defer_tac*) |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1181 |
fun permute_prems j k rl = |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1182 |
let val Thm{sign_ref,der,maxidx,hyps,tpairs,prop,shyps} = rl |
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1183 |
val prems = Logic.strip_imp_prems prop |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1184 |
and concl = Logic.strip_imp_concl prop |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1185 |
val moved_prems = List.drop(prems, j) |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1186 |
and fixed_prems = List.take(prems, j) |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1187 |
handle Subscript => raise THM("permute_prems:j", j, [rl]) |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1188 |
val n_j = length moved_prems |
11563 | 1189 |
val m = if k<0 then n_j + k else k |
1190 |
val prop' = if 0 = m orelse m = n_j then prop |
|
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1191 |
else if 0<m andalso m<n_j |
13629 | 1192 |
then let val (ps,qs) = splitAt(m,moved_prems) |
1193 |
in Logic.list_implies(fixed_prems @ qs @ ps, concl) end |
|
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1194 |
else raise THM("permute_prems:k", k, [rl]) |
7264 | 1195 |
in (*no fix_shyps*) |
1196 |
Thm{sign_ref = sign_ref, |
|
11563 | 1197 |
der = Pt.infer_derivs' (Pt.permute_prems_prf prems j m) der, |
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1198 |
maxidx = maxidx, |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1199 |
shyps = shyps, |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1200 |
hyps = hyps, |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1201 |
tpairs = tpairs, |
11563 | 1202 |
prop = prop'} |
7248
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1203 |
end; |
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1204 |
|
322151fe6f02
new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents:
7070
diff
changeset
|
1205 |
|
0 | 1206 |
(** User renaming of parameters in a subgoal **) |
1207 |
||
1208 |
(*Calls error rather than raising an exception because it is intended |
|
1209 |
for top-level use -- exception handling would not make sense here. |
|
1210 |
The names in cs, if distinct, are used for the innermost parameters; |
|
1211 |
preceding parameters may be renamed to make all params distinct.*) |
|
1212 |
fun rename_params_rule (cs, i) state = |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1213 |
let val Thm{sign_ref,der,maxidx,hyps,shyps,...} = state |
0 | 1214 |
val (tpairs, Bs, Bi, C) = dest_state(state,i) |
1215 |
val iparams = map #1 (Logic.strip_params Bi) |
|
1216 |
val short = length iparams - length cs |
|
250 | 1217 |
val newnames = |
1218 |
if short<0 then error"More names than abstractions!" |
|
15570 | 1219 |
else variantlist(Library.take (short,iparams), cs) @ cs |
3037
99ed078e6ae7
rename_params_rule used to check if the new name clashed with a free name in
nipkow
parents:
3012
diff
changeset
|
1220 |
val freenames = map (#1 o dest_Free) (term_frees Bi) |
0 | 1221 |
val newBi = Logic.list_rename_params (newnames, Bi) |
250 | 1222 |
in |
0 | 1223 |
case findrep cs of |
3565
c64410e701fb
Now rename_params_rule merely issues warnings--and does nothing--if the
paulson
parents:
3558
diff
changeset
|
1224 |
c::_ => (warning ("Can't rename. Bound variables not distinct: " ^ c); |
c64410e701fb
Now rename_params_rule merely issues warnings--and does nothing--if the
paulson
parents:
3558
diff
changeset
|
1225 |
state) |
1576
af8f43f742a0
Added some optimized versions of functions dealing with sets
berghofe
parents:
1569
diff
changeset
|
1226 |
| [] => (case cs inter_string freenames of |
3565
c64410e701fb
Now rename_params_rule merely issues warnings--and does nothing--if the
paulson
parents:
3558
diff
changeset
|
1227 |
a::_ => (warning ("Can't rename. Bound/Free variable clash: " ^ a); |
c64410e701fb
Now rename_params_rule merely issues warnings--and does nothing--if the
paulson
parents:
3558
diff
changeset
|
1228 |
state) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1229 |
| [] => Thm{sign_ref = sign_ref, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1230 |
der = der, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1231 |
maxidx = maxidx, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1232 |
shyps = shyps, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1233 |
hyps = hyps, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1234 |
tpairs = tpairs, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1235 |
prop = Logic.list_implies (Bs @ [newBi], C)}) |
0 | 1236 |
end; |
1237 |
||
12982 | 1238 |
|
0 | 1239 |
(*** Preservation of bound variable names ***) |
1240 |
||
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1241 |
fun rename_boundvars pat obj (thm as Thm {sign_ref, der, maxidx, hyps, shyps, tpairs, prop}) = |
12982 | 1242 |
(case Term.rename_abs pat obj prop of |
15531 | 1243 |
NONE => thm |
1244 |
| SOME prop' => Thm |
|
12982 | 1245 |
{sign_ref = sign_ref, |
1246 |
der = der, |
|
1247 |
maxidx = maxidx, |
|
1248 |
hyps = hyps, |
|
1249 |
shyps = shyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1250 |
tpairs = tpairs, |
12982 | 1251 |
prop = prop'}); |
10416
5b33e732e459
- Moved rewriting functions to meta_simplifier.ML
berghofe
parents:
10348
diff
changeset
|
1252 |
|
0 | 1253 |
|
250 | 1254 |
(* strip_apply f A(,B) strips off all assumptions/parameters from A |
0 | 1255 |
introduced by lifting over B, and applies f to remaining part of A*) |
1256 |
fun strip_apply f = |
|
1257 |
let fun strip(Const("==>",_)$ A1 $ B1, |
|
250 | 1258 |
Const("==>",_)$ _ $ B2) = implies $ A1 $ strip(B1,B2) |
1259 |
| strip((c as Const("all",_)) $ Abs(a,T,t1), |
|
1260 |
Const("all",_) $ Abs(_,_,t2)) = c$Abs(a,T,strip(t1,t2)) |
|
1261 |
| strip(A,_) = f A |
|
0 | 1262 |
in strip end; |
1263 |
||
1264 |
(*Use the alist to rename all bound variables and some unknowns in a term |
|
1265 |
dpairs = current disagreement pairs; tpairs = permanent ones (flexflex); |
|
1266 |
Preserves unknowns in tpairs and on lhs of dpairs. *) |
|
1267 |
fun rename_bvs([],_,_,_) = I |
|
1268 |
| rename_bvs(al,dpairs,tpairs,B) = |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
1269 |
let val vars = foldr add_term_vars [] |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
1270 |
(map fst dpairs @ map fst tpairs @ map snd tpairs) |
250 | 1271 |
(*unknowns appearing elsewhere be preserved!*) |
1272 |
val vids = map (#1 o #1 o dest_Var) vars; |
|
1273 |
fun rename(t as Var((x,i),T)) = |
|
1274 |
(case assoc(al,x) of |
|
15531 | 1275 |
SOME(y) => if x mem_string vids orelse y mem_string vids then t |
250 | 1276 |
else Var((y,i),T) |
15531 | 1277 |
| NONE=> t) |
0 | 1278 |
| rename(Abs(x,T,t)) = |
15570 | 1279 |
Abs(getOpt(assoc_string(al,x),x), T, rename t) |
0 | 1280 |
| rename(f$t) = rename f $ rename t |
1281 |
| rename(t) = t; |
|
250 | 1282 |
fun strip_ren Ai = strip_apply rename (Ai,B) |
0 | 1283 |
in strip_ren end; |
1284 |
||
1285 |
(*Function to rename bounds/unknowns in the argument, lifted over B*) |
|
1286 |
fun rename_bvars(dpairs, tpairs, B) = |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
1287 |
rename_bvs(foldr Term.match_bvars [] dpairs, dpairs, tpairs, B); |
0 | 1288 |
|
1289 |
||
1290 |
(*** RESOLUTION ***) |
|
1291 |
||
721
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1292 |
(** Lifting optimizations **) |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1293 |
|
0 | 1294 |
(*strip off pairs of assumptions/parameters in parallel -- they are |
1295 |
identical because of lifting*) |
|
250 | 1296 |
fun strip_assums2 (Const("==>", _) $ _ $ B1, |
1297 |
Const("==>", _) $ _ $ B2) = strip_assums2 (B1,B2) |
|
0 | 1298 |
| strip_assums2 (Const("all",_)$Abs(a,T,t1), |
250 | 1299 |
Const("all",_)$Abs(_,_,t2)) = |
0 | 1300 |
let val (B1,B2) = strip_assums2 (t1,t2) |
1301 |
in (Abs(a,T,B1), Abs(a,T,B2)) end |
|
1302 |
| strip_assums2 BB = BB; |
|
1303 |
||
1304 |
||
721
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1305 |
(*Faster normalization: skip assumptions that were lifted over*) |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1306 |
fun norm_term_skip env 0 t = Envir.norm_term env t |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1307 |
| norm_term_skip env n (Const("all",_)$Abs(a,T,t)) = |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1308 |
let val Envir.Envir{iTs, ...} = env |
15797 | 1309 |
val T' = Envir.typ_subst_TVars iTs T |
1238 | 1310 |
(*Must instantiate types of parameters because they are flattened; |
721
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1311 |
this could be a NEW parameter*) |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1312 |
in all T' $ Abs(a, T', norm_term_skip env n t) end |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1313 |
| norm_term_skip env n (Const("==>", _) $ A $ B) = |
1238 | 1314 |
implies $ A $ norm_term_skip env (n-1) B |
721
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1315 |
| norm_term_skip env n t = error"norm_term_skip: too few assumptions??"; |
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1316 |
|
479832ff2d29
Pure/thm/norm_term_skip: new, for skipping normalization of the context
lcp
parents:
678
diff
changeset
|
1317 |
|
0 | 1318 |
(*Composition of object rule r=(A1...Am/B) with proof state s=(B1...Bn/C) |
250 | 1319 |
Unifies B with Bi, replacing subgoal i (1 <= i <= n) |
0 | 1320 |
If match then forbid instantiations in proof state |
1321 |
If lifted then shorten the dpair using strip_assums2. |
|
1322 |
If eres_flg then simultaneously proves A1 by assumption. |
|
250 | 1323 |
nsubgoal is the number of new subgoals (written m above). |
0 | 1324 |
Curried so that resolution calls dest_state only once. |
1325 |
*) |
|
4270 | 1326 |
local exception COMPOSE |
0 | 1327 |
in |
250 | 1328 |
fun bicompose_aux match (state, (stpairs, Bs, Bi, C), lifted) |
0 | 1329 |
(eres_flg, orule, nsubgoal) = |
1529 | 1330 |
let val Thm{der=sder, maxidx=smax, shyps=sshyps, hyps=shyps, ...} = state |
1331 |
and Thm{der=rder, maxidx=rmax, shyps=rshyps, hyps=rhyps, |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1332 |
tpairs=rtpairs, prop=rprop,...} = orule |
1529 | 1333 |
(*How many hyps to skip over during normalization*) |
1238 | 1334 |
and nlift = Logic.count_prems(strip_all_body Bi, |
1335 |
if eres_flg then ~1 else 0) |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1336 |
val sign_ref = merge_thm_sgs(state,orule); |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1337 |
val sign = Sign.deref sign_ref; |
0 | 1338 |
(** Add new theorem with prop = '[| Bs; As |] ==> C' to thq **) |
11518 | 1339 |
fun addth A (As, oldAs, rder', n) ((env as Envir.Envir {maxidx, ...}, tpairs), thq) = |
250 | 1340 |
let val normt = Envir.norm_term env; |
1341 |
(*perform minimal copying here by examining env*) |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1342 |
val (ntpairs, normp) = |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1343 |
if Envir.is_empty env then (tpairs, (Bs @ As, C)) |
250 | 1344 |
else |
1345 |
let val ntps = map (pairself normt) tpairs |
|
2147 | 1346 |
in if Envir.above (smax, env) then |
1238 | 1347 |
(*no assignments in state; normalize the rule only*) |
1348 |
if lifted |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1349 |
then (ntps, (Bs @ map (norm_term_skip env nlift) As, C)) |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1350 |
else (ntps, (Bs @ map normt As, C)) |
1529 | 1351 |
else if match then raise COMPOSE |
250 | 1352 |
else (*normalize the new rule fully*) |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1353 |
(ntps, (map normt (Bs @ As), normt C)) |
250 | 1354 |
end |
1258 | 1355 |
val th = (*tuned fix_shyps*) |
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1356 |
Thm{sign_ref = sign_ref, |
11518 | 1357 |
der = Pt.infer_derivs |
1358 |
((if Envir.is_empty env then I |
|
1359 |
else if Envir.above (smax, env) then |
|
1360 |
(fn f => fn der => f (Pt.norm_proof' env der)) |
|
1361 |
else |
|
1362 |
curry op oo (Pt.norm_proof' env)) |
|
1363 |
(Pt.bicompose_proof Bs oldAs As A n)) rder' sder, |
|
2386 | 1364 |
maxidx = maxidx, |
14791 | 1365 |
shyps = add_env_sorts (env, Sorts.union_sort(rshyps,sshyps)), |
2386 | 1366 |
hyps = union_term(rhyps,shyps), |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1367 |
tpairs = ntpairs, |
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1368 |
prop = Logic.list_implies normp} |
11518 | 1369 |
in Seq.cons(th, thq) end handle COMPOSE => thq; |
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1370 |
val (rAs,B) = Logic.strip_prems(nsubgoal, [], rprop) |
0 | 1371 |
handle TERM _ => raise THM("bicompose: rule", 0, [orule,state]); |
1372 |
(*Modify assumptions, deleting n-th if n>0 for e-resolution*) |
|
1373 |
fun newAs(As0, n, dpairs, tpairs) = |
|
11518 | 1374 |
let val (As1, rder') = |
1375 |
if !Logic.auto_rename orelse not lifted then (As0, rder) |
|
1376 |
else (map (rename_bvars(dpairs,tpairs,B)) As0, |
|
1377 |
Pt.infer_derivs' (Pt.map_proof_terms |
|
1378 |
(rename_bvars (dpairs, tpairs, Bound 0)) I) rder); |
|
1379 |
in (map (Logic.flatten_params n) As1, As1, rder', n) |
|
250 | 1380 |
handle TERM _ => |
1381 |
raise THM("bicompose: 1st premise", 0, [orule]) |
|
0 | 1382 |
end; |
2147 | 1383 |
val env = Envir.empty(Int.max(rmax,smax)); |
0 | 1384 |
val BBi = if lifted then strip_assums2(B,Bi) else (B,Bi); |
1385 |
val dpairs = BBi :: (rtpairs@stpairs); |
|
1386 |
(*elim-resolution: try each assumption in turn. Initially n=1*) |
|
11518 | 1387 |
fun tryasms (_, _, _, []) = Seq.empty |
1388 |
| tryasms (A, As, n, (t,u)::apairs) = |
|
4270 | 1389 |
(case Seq.pull(Unify.unifiers(sign, env, (t,u)::dpairs)) of |
15531 | 1390 |
NONE => tryasms (A, As, n+1, apairs) |
1391 |
| cell as SOME((_,tpairs),_) => |
|
15454 | 1392 |
Seq.it_right (addth A (newAs(As, n, [BBi,(u,t)], tpairs))) |
1393 |
(Seq.make(fn()=> cell), |
|
1394 |
Seq.make(fn()=> Seq.pull (tryasms(A, As, n+1, apairs))))) |
|
0 | 1395 |
fun eres [] = raise THM("bicompose: no premises", 0, [orule,state]) |
15531 | 1396 |
| eres (A1::As) = tryasms(SOME A1, As, 1, Logic.assum_pairs(nlift+1,A1)) |
0 | 1397 |
(*ordinary resolution*) |
15531 | 1398 |
fun res(NONE) = Seq.empty |
1399 |
| res(cell as SOME((_,tpairs),_)) = |
|
1400 |
Seq.it_right (addth NONE (newAs(rev rAs, 0, [BBi], tpairs))) |
|
4270 | 1401 |
(Seq.make (fn()=> cell), Seq.empty) |
0 | 1402 |
in if eres_flg then eres(rev rAs) |
4270 | 1403 |
else res(Seq.pull(Unify.unifiers(sign, env, dpairs))) |
0 | 1404 |
end; |
7528 | 1405 |
end; |
0 | 1406 |
|
1407 |
||
1408 |
fun bicompose match arg i state = |
|
1409 |
bicompose_aux match (state, dest_state(state,i), false) arg; |
|
1410 |
||
1411 |
(*Quick test whether rule is resolvable with the subgoal with hyps Hs |
|
1412 |
and conclusion B. If eres_flg then checks 1st premise of rule also*) |
|
1413 |
fun could_bires (Hs, B, eres_flg, rule) = |
|
1414 |
let fun could_reshyp (A1::_) = exists (apl(A1,could_unify)) Hs |
|
250 | 1415 |
| could_reshyp [] = false; (*no premise -- illegal*) |
1416 |
in could_unify(concl_of rule, B) andalso |
|
1417 |
(not eres_flg orelse could_reshyp (prems_of rule)) |
|
0 | 1418 |
end; |
1419 |
||
1420 |
(*Bi-resolution of a state with a list of (flag,rule) pairs. |
|
1421 |
Puts the rule above: rule/state. Renames vars in the rules. *) |
|
250 | 1422 |
fun biresolution match brules i state = |
0 | 1423 |
let val lift = lift_rule(state, i); |
250 | 1424 |
val (stpairs, Bs, Bi, C) = dest_state(state,i) |
1425 |
val B = Logic.strip_assums_concl Bi; |
|
1426 |
val Hs = Logic.strip_assums_hyp Bi; |
|
1427 |
val comp = bicompose_aux match (state, (stpairs, Bs, Bi, C), true); |
|
4270 | 1428 |
fun res [] = Seq.empty |
250 | 1429 |
| res ((eres_flg, rule)::brules) = |
13642
a3d97348ceb6
added failure trace information to pattern unification
nipkow
parents:
13629
diff
changeset
|
1430 |
if !Pattern.trace_unify_fail orelse |
a3d97348ceb6
added failure trace information to pattern unification
nipkow
parents:
13629
diff
changeset
|
1431 |
could_bires (Hs, B, eres_flg, rule) |
4270 | 1432 |
then Seq.make (*delay processing remainder till needed*) |
15531 | 1433 |
(fn()=> SOME(comp (eres_flg, lift rule, nprems_of rule), |
250 | 1434 |
res brules)) |
1435 |
else res brules |
|
4270 | 1436 |
in Seq.flat (res brules) end; |
0 | 1437 |
|
1438 |
||
2509 | 1439 |
(*** Oracles ***) |
1440 |
||
15672 | 1441 |
fun invoke_oracle_i thy name = |
3812 | 1442 |
let |
6390 | 1443 |
val {sign = sg, oracles, ...} = Theory.rep_theory thy; |
3812 | 1444 |
val oracle = |
1445 |
(case Symtab.lookup (oracles, name) of |
|
15531 | 1446 |
NONE => raise THM ("Unknown oracle: " ^ name, 0, []) |
1447 |
| SOME (f, _) => f); |
|
3812 | 1448 |
in |
1449 |
fn (sign, exn) => |
|
1450 |
let |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1451 |
val sign_ref' = Sign.merge_refs (Sign.self_ref sg, Sign.self_ref sign); |
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1452 |
val sign' = Sign.deref sign_ref'; |
14828 | 1453 |
val (prop, T, maxidx) = |
1454 |
Sign.certify_term (Sign.pp sign') sign' (oracle (sign', exn)); |
|
3812 | 1455 |
in |
1456 |
if T <> propT then |
|
1457 |
raise THM ("Oracle's result must have type prop: " ^ name, 0, []) |
|
1458 |
else fix_shyps [] [] |
|
3967
edd5ff9371f8
sg_ref: automatic adjustment of thms of draft theories;
wenzelm
parents:
3895
diff
changeset
|
1459 |
(Thm {sign_ref = sign_ref', |
11518 | 1460 |
der = (true, Pt.oracle_proof name prop), |
3812 | 1461 |
maxidx = maxidx, |
1462 |
shyps = [], |
|
1463 |
hyps = [], |
|
13658
c9ad3e64ddcf
Changed handling of flex-flex constraints: now stored in separate
berghofe
parents:
13642
diff
changeset
|
1464 |
tpairs = [], |
3812 | 1465 |
prop = prop}) |
1466 |
end |
|
1467 |
end; |
|
1468 |
||
15672 | 1469 |
fun invoke_oracle thy = |
1470 |
invoke_oracle_i thy o Sign.intern (Theory.sign_of thy) Theory.oracleK; |
|
1471 |
||
1539 | 1472 |
|
0 | 1473 |
end; |
1503 | 1474 |
|
6089 | 1475 |
|
1476 |
structure BasicThm: BASIC_THM = Thm; |
|
1477 |
open BasicThm; |