author | wenzelm |
Mon, 27 Jul 1998 11:29:33 +0200 | |
changeset 5201 | fac6fea3b782 |
parent 5197 | 69c77ed95ba3 |
child 5210 | 54aaa779b6b4 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/record_package.ML |
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ID: $Id$ |
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Author: Wolfgang Naraschewski and Markus Wenzel, TU Muenchen |
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Extensible records with structural subtyping in HOL. |
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TODO: |
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- field types: typedef; |
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- operations and theorems: split, split_all/ex, ...; |
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- field constructor: more specific type for snd component (x_more etc. classes); |
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*) |
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signature RECORD_PACKAGE = |
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sig |
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val moreS: sort |
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val mk_fieldT: (string * typ) * typ -> typ |
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val dest_fieldT: typ -> (string * typ) * typ |
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val mk_field: (string * term) * term -> term |
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val mk_fst: term -> term |
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val mk_snd: term -> term |
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val mk_recordT: (string * typ) list * typ -> typ |
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val dest_recordT: typ -> (string * typ) list * typ |
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val mk_record: (string * term) list * term -> term |
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val mk_sel: term -> string -> term |
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val mk_update: term -> string * term -> term |
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val print_records: theory -> unit |
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val add_record: (string list * bstring) -> string option |
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-> (bstring * string) list -> theory -> theory |
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val add_record_i: (string list * bstring) -> (typ list * string) option |
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-> (bstring * typ) list -> theory -> theory |
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val setup: (theory -> theory) list |
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end; |
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structure RecordPackage: RECORD_PACKAGE = |
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struct |
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(*** utilities ***) |
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(* string suffixes *) |
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fun suffix sfx s = s ^ sfx; |
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fun unsuffix sfx s = |
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let |
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val cs = explode s; |
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val prfx_len = size s - size sfx; |
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in |
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if prfx_len >= 0 andalso implode (drop (prfx_len, cs)) = sfx then |
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implode (take (prfx_len, cs)) |
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else raise LIST "unsuffix" |
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end; |
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(* definitions and equations *) |
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infix 0 :== === ; |
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val (op :==) = Logic.mk_defpair; |
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val (op ===) = HOLogic.mk_Trueprop o HOLogic.mk_eq; |
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fun get_defs thy specs = map (PureThy.get_tthm thy o fst) specs; |
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(* proof by simplification *) |
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fun prove_simp thy simps = |
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let |
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val sign = Theory.sign_of thy; |
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val ss = Simplifier.addsimps (HOL_basic_ss, map Attribute.thm_of simps); |
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fun prove goal = |
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Attribute.tthm_of |
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(Goals.prove_goalw_cterm [] (Thm.cterm_of sign goal) |
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(K [ALLGOALS (Simplifier.simp_tac ss)]) |
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handle ERROR => error ("The error(s) above occurred while trying to prove " |
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^ quote (Sign.string_of_term sign goal))); |
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in prove end; |
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(*** syntax operations ***) |
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(** name components **) |
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val moreN = "more"; |
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val schemeN = "_scheme"; |
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val fieldN = "_field"; |
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val field_typeN = "_field_type"; |
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val fstN = "_fst"; |
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val sndN = "_snd"; |
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val updateN = "_update"; |
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val makeN = "make"; |
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val make_schemeN = "make_scheme"; |
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(** tuple operations **) |
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(* more type class *) |
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val moreS = ["more"]; |
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(* types *) |
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fun mk_fieldT ((c, T), U) = Type (suffix field_typeN c, [T, U]); |
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fun dest_fieldT (typ as Type (c_field_type, [T, U])) = |
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(case try (unsuffix field_typeN) c_field_type of |
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None => raise TYPE ("dest_fieldT", [typ], []) |
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| Some c => ((c, T), U)) |
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| dest_fieldT typ = raise TYPE ("dest_fieldT", [typ], []); |
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(* constructors *) |
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fun mk_fieldC U (c, T) = (suffix fieldN c, T --> U --> mk_fieldT ((c, T), U)); |
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fun mk_field ((c, t), u) = |
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let val T = fastype_of t and U = fastype_of u |
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in Const (suffix fieldN c, [T, U] ---> mk_fieldT ((c, T), U)) $ t $ u end; |
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(* destructors *) |
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fun mk_fstC U (c, T) = (suffix fstN c, mk_fieldT ((c, T), U) --> T); |
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fun mk_sndC U (c, T) = (suffix sndN c, mk_fieldT ((c, T), U) --> U); |
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fun dest_field fst_or_snd p = |
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let |
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val pT = fastype_of p; |
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val ((c, T), U) = dest_fieldT pT; |
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val (destN, destT) = if fst_or_snd then (fstN, T) else (sndN, U); |
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in Const (suffix destN c, pT --> destT) $ p end; |
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val mk_fst = dest_field true; |
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val mk_snd = dest_field false; |
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(** record operations **) |
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(* types *) |
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val mk_recordT = foldr mk_fieldT; |
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fun dest_recordT T = |
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(case try dest_fieldT T of |
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None => ([], T) |
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| Some (c_T, U) => apfst (cons c_T) (dest_recordT U)); |
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fun find_fieldT c rT = |
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(case assoc (fst (dest_recordT rT), c) of |
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None => raise TYPE ("find_field: " ^ c, [rT], []) |
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| Some T => T); |
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(* constructors *) |
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val mk_record = foldr mk_field; |
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(* selectors *) |
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fun mk_selC rT (c, T) = (c, rT --> T); |
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fun mk_sel r c = |
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let val rT = fastype_of r |
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in Const (mk_selC rT (c, find_fieldT c rT)) $ r end; |
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val mk_moreC = mk_selC; |
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fun mk_more r c = |
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let val rT = fastype_of r |
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in Const (mk_moreC rT (c, snd (dest_recordT rT))) $ r end; |
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(* updates *) |
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fun mk_updateC rT (c, T) = (suffix updateN c, T --> rT --> rT); |
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fun mk_update r (c, x) = |
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let val rT = fastype_of r |
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in Const (mk_updateC rT (c, find_fieldT c rT)) $ x $ r end; |
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186 |
|
5197 | 187 |
val mk_more_updateC = mk_updateC; |
188 |
||
189 |
fun mk_more_update r (c, x) = |
|
190 |
let val rT = fastype_of r |
|
191 |
in Const (mk_more_updateC rT (c, snd (dest_recordT rT))) $ x $ r end; |
|
192 |
||
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193 |
|
4890 | 194 |
(* make *) |
195 |
||
196 |
fun mk_makeC rT (c, Ts) = (c, Ts ---> rT); |
|
197 |
||
198 |
||
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199 |
|
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(** concrete syntax for records **) |
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201 |
|
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(* parse translations *) |
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203 |
|
5197 | 204 |
fun gen_field_tr mark sfx (t as Const (c, _) $ Free (name, _) $ arg) = |
205 |
if c = mark then Syntax.const (suffix sfx name) $ arg |
|
206 |
else raise TERM ("gen_field_tr: " ^ mark, [t]) |
|
207 |
| gen_field_tr mark _ t = raise TERM ("gen_field_tr: " ^ mark, [t]); |
|
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208 |
|
5197 | 209 |
fun gen_fields_tr sep mark sfx (tm as Const (c, _) $ t $ u) = |
210 |
if c = sep then gen_field_tr mark sfx t :: gen_fields_tr sep mark sfx u |
|
5201 | 211 |
else [gen_field_tr mark sfx tm] |
212 |
| gen_fields_tr _ mark sfx tm = [gen_field_tr mark sfx tm]; |
|
5197 | 213 |
|
214 |
fun gen_record_tr sep mark sfx unit [t] = foldr (op $) (gen_fields_tr sep mark sfx t, unit) |
|
5201 | 215 |
| gen_record_tr _ _ _ _ ts = raise TERM ("gen_record_tr", ts); |
5197 | 216 |
|
217 |
fun gen_record_scheme_tr sep mark sfx [t, more] = foldr (op $) (gen_fields_tr sep mark sfx t, more) |
|
5201 | 218 |
| gen_record_scheme_tr _ _ _ ts = raise TERM ("gen_record_scheme_tr", ts); |
5197 | 219 |
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|
5197 | 221 |
val record_type_tr = gen_record_tr "_field_types" "_field_type" field_typeN (Syntax.const "unit"); |
222 |
val record_type_scheme_tr = gen_record_scheme_tr "_field_types" "_field_type" field_typeN; |
|
223 |
||
224 |
val record_tr = gen_record_tr "_fields" "_field" fieldN HOLogic.unit; |
|
225 |
val record_scheme_tr = gen_record_scheme_tr "_fields" "_field" fieldN; |
|
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226 |
|
5197 | 227 |
fun record_update_tr [t, u] = |
228 |
foldr (op $) (rev (gen_fields_tr "_updates" "_update" updateN u), t) |
|
229 |
| record_update_tr ts = raise TERM ("record_update_tr", ts); |
|
230 |
||
231 |
||
232 |
val parse_translation = |
|
233 |
[("_record_type", record_type_tr), |
|
234 |
("_record_type_scheme", record_type_scheme_tr), |
|
235 |
("_record", record_tr), |
|
236 |
("_record_scheme", record_scheme_tr), |
|
237 |
("_record_update", record_update_tr)]; |
|
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238 |
|
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239 |
|
4890 | 240 |
(* print translations *) |
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241 |
|
5197 | 242 |
fun gen_fields_tr' mark sfx (tm as Const (name_field, _) $ t $ u) = |
243 |
(case try (unsuffix sfx) name_field of |
|
244 |
Some name => |
|
245 |
apfst (cons (Syntax.const mark $ Syntax.free name $ t)) (gen_fields_tr' mark sfx u) |
|
246 |
| None => ([], tm)) |
|
247 |
| gen_fields_tr' _ _ tm = ([], tm); |
|
248 |
||
249 |
fun gen_record_tr' sep mark sfx is_unit record record_scheme tm = |
|
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250 |
let |
5197 | 251 |
val (ts, u) = gen_fields_tr' mark sfx tm; |
252 |
val t' = foldr1 (fn (v, w) => Syntax.const sep $ v $ w) ts; |
|
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253 |
in |
5197 | 254 |
if is_unit u then Syntax.const record $ t' |
255 |
else Syntax.const record_scheme $ t' $ u |
|
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256 |
end; |
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257 |
|
5197 | 258 |
|
259 |
val record_type_tr' = |
|
260 |
gen_record_tr' "_field_types" "_field_type" field_typeN |
|
261 |
(fn Const ("unit", _) => true | _ => false) "_record_type" "_record_type_scheme"; |
|
262 |
||
263 |
val record_tr' = |
|
264 |
gen_record_tr' "_fields" "_field" fieldN HOLogic.is_unit "_record" "_record_scheme"; |
|
265 |
||
266 |
fun record_update_tr' tm = |
|
267 |
let val (ts, u) = gen_fields_tr' "_update" updateN tm in |
|
268 |
Syntax.const "_record_update" $ u $ |
|
269 |
foldr1 (fn (v, w) => Syntax.const "_updates" $ v $ w) (rev ts) |
|
270 |
end; |
|
271 |
||
272 |
||
5201 | 273 |
fun gen_field_tr' sfx tr' name = |
274 |
let val name_sfx = suffix sfx name |
|
275 |
in (name_sfx, fn [t, u] => tr' (Syntax.const name_sfx $ t $ u) | _ => raise Match) end; |
|
276 |
||
5197 | 277 |
fun print_translation names = |
278 |
map (gen_field_tr' field_typeN record_type_tr') names @ |
|
279 |
map (gen_field_tr' fieldN record_tr') names @ |
|
280 |
map (gen_field_tr' updateN record_update_tr') names; |
|
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281 |
|
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282 |
|
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283 |
|
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284 |
(*** extend theory by record definition ***) |
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285 |
|
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286 |
(** record info **) |
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287 |
|
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288 |
(* type record_info and parent_info *) |
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289 |
|
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290 |
type record_info = |
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291 |
{args: (string * sort) list, |
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292 |
parent: (typ list * string) option, |
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293 |
fields: (string * typ) list, |
4895 | 294 |
simps: tthm list}; |
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295 |
|
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296 |
type parent_info = |
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297 |
{name: string, |
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fields: (string * typ) list, |
4895 | 299 |
simps: tthm list}; |
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300 |
|
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|
301 |
|
5052 | 302 |
(* data kind 'HOL/records' *) |
5001 | 303 |
|
5006 | 304 |
structure RecordsArgs = |
305 |
struct |
|
306 |
val name = "HOL/records"; |
|
307 |
type T = record_info Symtab.table; |
|
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308 |
|
5006 | 309 |
val empty = Symtab.empty; |
310 |
val prep_ext = I; |
|
311 |
val merge: T * T -> T = Symtab.merge (K true); |
|
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312 |
|
5006 | 313 |
fun print sg tab = |
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314 |
let |
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315 |
val prt_typ = Sign.pretty_typ sg; |
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316 |
val ext_const = Sign.cond_extern sg Sign.constK; |
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317 |
|
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318 |
fun pretty_parent None = [] |
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319 |
| pretty_parent (Some (Ts, name)) = |
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|
320 |
[Pretty.block [prt_typ (Type (name, Ts)), Pretty.str " +"]]; |
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|
321 |
|
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|
322 |
fun pretty_field (c, T) = Pretty.block |
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|
323 |
[Pretty.str (ext_const c), Pretty.str " ::", Pretty.brk 1, Pretty.quote (prt_typ T)]; |
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|
324 |
|
4895 | 325 |
fun pretty_record (name, {args, parent, fields, simps = _}) = Pretty.block (Pretty.fbreaks |
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|
326 |
(Pretty.block [prt_typ (Type (name, map TFree args)), Pretty.str " = "] :: |
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|
327 |
pretty_parent parent @ map pretty_field fields)); |
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|
328 |
in |
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|
329 |
seq (Pretty.writeln o pretty_record) (Symtab.dest tab) |
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|
330 |
end; |
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|
331 |
end; |
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|
332 |
|
5006 | 333 |
structure RecordsData = TheoryDataFun(RecordsArgs); |
334 |
val print_records = RecordsData.print; |
|
335 |
||
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|
336 |
|
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|
337 |
(* get and put records *) |
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|
338 |
|
5006 | 339 |
fun get_record thy name = Symtab.lookup (RecordsData.get thy, name); |
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|
340 |
|
4890 | 341 |
fun put_record name info thy = |
5006 | 342 |
RecordsData.put (Symtab.update ((name, info), RecordsData.get thy)) thy; |
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|
343 |
|
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|
344 |
|
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|
345 |
(* parent records *) |
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|
346 |
|
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|
347 |
fun inst_record thy (types, name) = |
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|
348 |
let |
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|
349 |
val sign = Theory.sign_of thy; |
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|
350 |
fun err msg = error (msg ^ " parent record " ^ quote name); |
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|
351 |
|
4895 | 352 |
val {args, parent, fields, simps} = |
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|
353 |
(case get_record thy name of Some info => info | None => err "Unknown"); |
4895 | 354 |
val _ = if length types <> length args then err "Bad number of arguments for" else (); |
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|
355 |
|
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|
356 |
fun bad_inst ((x, S), T) = |
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|
357 |
if Sign.of_sort sign (T, S) then None else Some x |
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|
358 |
val bads = mapfilter bad_inst (args ~~ types); |
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|
359 |
|
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|
360 |
val inst = map fst args ~~ types; |
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|
361 |
val subst = Term.map_type_tfree (fn (x, _) => the (assoc (inst, x))); |
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|
362 |
in |
4895 | 363 |
if not (null bads) then |
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|
364 |
err ("Ill-sorted instantiation of " ^ commas bads ^ " in") |
4895 | 365 |
else (apsome (apfst (map subst)) parent, map (apsnd subst) fields, simps) |
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|
366 |
end; |
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|
367 |
|
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|
368 |
fun add_parents thy (None, parents) = parents |
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|
369 |
| add_parents thy (Some (types, name), parents) = |
4895 | 370 |
let val (pparent, pfields, psimps) = inst_record thy (types, name) |
371 |
in add_parents thy (pparent, {name = name, fields = pfields, simps = psimps} :: parents) end; |
|
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|
372 |
|
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|
373 |
|
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|
374 |
|
4890 | 375 |
(** internal theory extenders **) |
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376 |
|
4894 | 377 |
(* field_definitions *) |
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|
378 |
|
4894 | 379 |
(*theorems from Prod.thy*) |
4890 | 380 |
val prod_convs = map Attribute.tthm_of [fst_conv, snd_conv]; |
381 |
||
382 |
||
4894 | 383 |
fun field_definitions fields names zeta moreT more vars named_vars thy = |
4890 | 384 |
let |
385 |
val base = Sign.base_name; |
|
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|
386 |
|
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|
387 |
|
4890 | 388 |
(* prepare declarations and definitions *) |
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|
389 |
|
4890 | 390 |
(*field types*) |
391 |
fun mk_fieldT_spec c = |
|
392 |
(suffix field_typeN c, ["'a", zeta], |
|
393 |
HOLogic.mk_prodT (TFree ("'a", HOLogic.termS), moreT), Syntax.NoSyn); |
|
394 |
val fieldT_specs = map (mk_fieldT_spec o base) names; |
|
395 |
||
396 |
(*field declarations*) |
|
397 |
val field_decls = map (mk_fieldC moreT) fields; |
|
398 |
val dest_decls = map (mk_fstC moreT) fields @ map (mk_sndC moreT) fields; |
|
399 |
||
400 |
(*field constructors*) |
|
401 |
fun mk_field_spec (c, v) = |
|
4894 | 402 |
mk_field ((c, v), more) :== HOLogic.mk_prod (v, more); |
403 |
val field_specs = map mk_field_spec named_vars; |
|
4890 | 404 |
|
405 |
(*field destructors*) |
|
406 |
fun mk_dest_spec dest dest' (c, T) = |
|
407 |
let |
|
4895 | 408 |
val p = Free ("p", mk_fieldT ((c, T), moreT)); |
409 |
val p' = Free ("p", HOLogic.mk_prodT (T, moreT)); |
|
4894 | 410 |
(*note: field types are just abbreviations*) |
411 |
in dest p :== dest' p' end; |
|
4890 | 412 |
val dest_specs = |
413 |
map (mk_dest_spec mk_fst HOLogic.mk_fst) fields @ |
|
414 |
map (mk_dest_spec mk_snd HOLogic.mk_snd) fields; |
|
415 |
||
416 |
||
417 |
(* prepare theorems *) |
|
4894 | 418 |
|
4890 | 419 |
fun mk_dest_prop dest dest' (c, v) = |
4894 | 420 |
dest (mk_field ((c, v), more)) === dest' (v, more); |
4890 | 421 |
val dest_props = |
4895 | 422 |
map (mk_dest_prop mk_fst fst) named_vars @ |
423 |
map (mk_dest_prop mk_snd snd) named_vars; |
|
4890 | 424 |
|
425 |
||
426 |
(* 1st stage: defs_thy *) |
|
427 |
||
428 |
val defs_thy = |
|
429 |
thy |
|
430 |
|> Theory.add_tyabbrs_i fieldT_specs |
|
431 |
|> (Theory.add_consts_i o map (Syntax.no_syn o apfst base)) |
|
432 |
(field_decls @ dest_decls) |
|
5197 | 433 |
|> (PureThy.add_defs_i o map (fn x => (x, [Attribute.tag_internal]))) |
4890 | 434 |
(field_specs @ dest_specs); |
435 |
||
436 |
val field_defs = get_defs defs_thy field_specs; |
|
437 |
val dest_defs = get_defs defs_thy dest_specs; |
|
438 |
||
439 |
||
440 |
(* 2nd stage: thms_thy *) |
|
441 |
||
4894 | 442 |
val dest_convs = |
4895 | 443 |
map (prove_simp defs_thy (field_defs @ dest_defs @ prod_convs)) dest_props; |
4894 | 444 |
|
4890 | 445 |
val thms_thy = |
446 |
defs_thy |
|
447 |
|> (PureThy.add_tthmss o map Attribute.none) |
|
448 |
[("field_defs", field_defs), |
|
449 |
("dest_defs", dest_defs), |
|
450 |
("dest_convs", dest_convs)]; |
|
451 |
||
452 |
in (thms_thy, dest_convs) end; |
|
453 |
||
454 |
||
455 |
(* record_definition *) |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
456 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
457 |
fun record_definition (args, bname) parent (parents: parent_info list) bfields thy = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
458 |
let |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
459 |
val sign = Theory.sign_of thy; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
460 |
val full = Sign.full_name_path sign bname; |
4890 | 461 |
val base = Sign.base_name; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
462 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
463 |
|
4890 | 464 |
(* basic components *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
465 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
466 |
val alphas = map fst args; |
5197 | 467 |
val name = Sign.full_name sign bname; (*not made part of record name space!*) |
4890 | 468 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
469 |
val parent_fields = flat (map #fields parents); |
4890 | 470 |
val parent_names = map fst parent_fields; |
471 |
val parent_types = map snd parent_fields; |
|
472 |
val parent_len = length parent_fields; |
|
473 |
val parent_xs = variantlist (map (base o fst) parent_fields, [moreN]); |
|
474 |
val parent_vars = ListPair.map Free (parent_xs, parent_types); |
|
4894 | 475 |
val parent_named_vars = parent_names ~~ parent_vars; |
4890 | 476 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
477 |
val fields = map (apfst full) bfields; |
4890 | 478 |
val names = map fst fields; |
479 |
val types = map snd fields; |
|
480 |
val len = length fields; |
|
481 |
val xs = variantlist (map fst bfields, moreN :: parent_xs); |
|
482 |
val vars = ListPair.map Free (xs, types); |
|
4894 | 483 |
val named_vars = names ~~ vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
484 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
485 |
val all_fields = parent_fields @ fields; |
4890 | 486 |
val all_names = parent_names @ names; |
487 |
val all_types = parent_types @ types; |
|
488 |
val all_len = parent_len + len; |
|
489 |
val all_xs = parent_xs @ xs; |
|
490 |
val all_vars = parent_vars @ vars; |
|
4894 | 491 |
val all_named_vars = parent_named_vars @ named_vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
492 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
493 |
val zeta = variant alphas "'z"; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
494 |
val moreT = TFree (zeta, moreS); |
4895 | 495 |
val more = Free (moreN, moreT); |
5197 | 496 |
val full_moreN = full moreN; |
497 |
fun more_part t = mk_more t full_moreN; |
|
498 |
fun more_part_update t x = mk_more_update t (full_moreN, x); |
|
4894 | 499 |
|
500 |
val parent_more = funpow parent_len mk_snd; |
|
501 |
val idxs = 0 upto (len - 1); |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
502 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
503 |
val rec_schemeT = mk_recordT (all_fields, moreT); |
4894 | 504 |
val rec_scheme = mk_record (all_named_vars, more); |
4890 | 505 |
val r = Free ("r", rec_schemeT); |
4894 | 506 |
val recT = mk_recordT (all_fields, HOLogic.unitT); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
507 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
508 |
|
4890 | 509 |
(* prepare print translation functions *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
510 |
|
5197 | 511 |
val accesses = distinct (flat (map NameSpace.accesses (full_moreN :: names))); |
512 |
val (_, _, tr'_names, _) = Syntax.trfun_names (Theory.syn_of thy); |
|
513 |
val field_tr's = filter_out (fn (c, _) => c mem tr'_names) (print_translation accesses); |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
514 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
515 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
516 |
(* prepare declarations *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
517 |
|
5197 | 518 |
val sel_decls = map (mk_selC rec_schemeT) bfields @ |
519 |
[mk_moreC rec_schemeT (moreN, moreT)]; |
|
520 |
val update_decls = map (mk_updateC rec_schemeT) bfields @ |
|
521 |
[mk_more_updateC rec_schemeT (moreN, moreT)]; |
|
4890 | 522 |
val make_decls = |
523 |
[(mk_makeC rec_schemeT (make_schemeN, all_types @ [moreT])), |
|
524 |
(mk_makeC recT (makeN, all_types))]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
525 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
526 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
527 |
(* prepare definitions *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
528 |
|
4895 | 529 |
(*record (scheme) type abbreviation*) |
4890 | 530 |
val recordT_specs = |
531 |
[(suffix schemeN bname, alphas @ [zeta], rec_schemeT, Syntax.NoSyn), |
|
532 |
(bname, alphas, recT, Syntax.NoSyn)]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
533 |
|
4894 | 534 |
(*selectors*) |
4890 | 535 |
fun mk_sel_spec (i, c) = |
4894 | 536 |
mk_sel r c :== mk_fst (funpow i mk_snd (parent_more r)); |
537 |
val sel_specs = |
|
538 |
ListPair.map mk_sel_spec (idxs, names) @ |
|
539 |
[more_part r :== funpow len mk_snd (parent_more r)]; |
|
4890 | 540 |
|
541 |
(*updates*) |
|
4894 | 542 |
val all_sels = all_names ~~ map (mk_sel r) all_names; |
4890 | 543 |
fun mk_upd_spec (i, (c, x)) = |
4894 | 544 |
mk_update r (c, x) :== |
545 |
mk_record (nth_update (c, x) (parent_len + i, all_sels), more_part r) |
|
5197 | 546 |
val update_specs = |
547 |
ListPair.map mk_upd_spec (idxs, named_vars) @ |
|
548 |
[more_part_update r more :== mk_record (all_sels, more)]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
549 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
550 |
(*makes*) |
4890 | 551 |
val make_scheme = Const (mk_makeC rec_schemeT (full make_schemeN, all_types @ [moreT])); |
552 |
val make = Const (mk_makeC recT (full makeN, all_types)); |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
553 |
val make_specs = |
4894 | 554 |
[list_comb (make_scheme, all_vars) $ more :== rec_scheme, |
555 |
list_comb (make, all_vars) :== mk_record (all_named_vars, HOLogic.unit)]; |
|
556 |
||
557 |
||
558 |
(* prepare propositions *) |
|
559 |
||
560 |
(*selectors*) |
|
561 |
val sel_props = |
|
562 |
map (fn (c, x) => mk_sel rec_scheme c === x) named_vars @ |
|
563 |
[more_part rec_scheme === more]; |
|
564 |
||
565 |
(*updates*) |
|
566 |
fun mk_upd_prop (i, (c, T)) = |
|
567 |
let val x' = Free (variant all_xs (base c ^ "'"), T) in |
|
568 |
mk_update rec_scheme (c, x') === |
|
569 |
mk_record (nth_update (c, x') (parent_len + i, all_named_vars), more) |
|
570 |
end; |
|
5197 | 571 |
val update_props = |
572 |
ListPair.map mk_upd_prop (idxs, fields) @ |
|
573 |
let val more' = Free (variant all_xs (moreN ^ "'"), moreT) |
|
574 |
in [more_part_update rec_scheme more' === mk_record (all_named_vars, more')] end; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
575 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
576 |
|
4890 | 577 |
(* 1st stage: fields_thy *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
578 |
|
4890 | 579 |
val (fields_thy, field_simps) = |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
580 |
thy |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
581 |
|> Theory.add_path bname |
4894 | 582 |
|> field_definitions fields names zeta moreT more vars named_vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
583 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
584 |
|
4890 | 585 |
(* 2nd stage: defs_thy *) |
586 |
||
587 |
val defs_thy = |
|
588 |
fields_thy |
|
589 |
|> Theory.parent_path |
|
5197 | 590 |
|> Theory.add_tyabbrs_i recordT_specs (*not made part of record name space!*) |
4890 | 591 |
|> Theory.add_path bname |
5197 | 592 |
|> Theory.add_trfuns ([], [], field_tr's, []) |
4894 | 593 |
|> (Theory.add_consts_i o map Syntax.no_syn) |
594 |
(sel_decls @ update_decls @ make_decls) |
|
5197 | 595 |
|> (PureThy.add_defs_i o map (fn x => (x, [Attribute.tag_internal]))) |
4894 | 596 |
(sel_specs @ update_specs @ make_specs); |
4890 | 597 |
|
598 |
val sel_defs = get_defs defs_thy sel_specs; |
|
599 |
val update_defs = get_defs defs_thy update_specs; |
|
600 |
val make_defs = get_defs defs_thy make_specs; |
|
601 |
||
602 |
||
603 |
(* 3rd stage: thms_thy *) |
|
604 |
||
4895 | 605 |
val parent_simps = flat (map #simps parents); |
606 |
val prove = prove_simp defs_thy; |
|
4890 | 607 |
|
4895 | 608 |
val sel_convs = map (prove (parent_simps @ sel_defs @ field_simps)) sel_props; |
609 |
val update_convs = map (prove (parent_simps @ update_defs @ sel_convs)) update_props; |
|
4894 | 610 |
|
611 |
val simps = field_simps @ sel_convs @ update_convs @ make_defs; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
612 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
613 |
val thms_thy = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
614 |
defs_thy |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
615 |
|> (PureThy.add_tthmss o map Attribute.none) |
4895 | 616 |
[("select_defs", sel_defs), |
4890 | 617 |
("update_defs", update_defs), |
4894 | 618 |
("make_defs", make_defs), |
4895 | 619 |
("select_convs", sel_convs), |
4894 | 620 |
("update_convs", update_convs)] |
621 |
|> PureThy.add_tthmss [(("simps", simps), [Simplifier.simp_add_global])]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
622 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
623 |
|
4890 | 624 |
(* 4th stage: final_thy *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
625 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
626 |
val final_thy = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
627 |
thms_thy |
4895 | 628 |
|> put_record name {args = args, parent = parent, fields = fields, simps = simps} |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
629 |
|> Theory.parent_path; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
630 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
631 |
in final_thy end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
632 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
633 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
634 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
635 |
(** theory extender interface **) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
636 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
637 |
(* prepare arguments *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
638 |
|
4894 | 639 |
(*note: read_raw_typ avoids expanding type abbreviations*) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
640 |
fun read_raw_parent sign s = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
641 |
(case Sign.read_raw_typ (sign, K None) s handle TYPE (msg, _, _) => error msg of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
642 |
Type (name, Ts) => (Ts, name) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
643 |
| _ => error ("Bad parent record specification: " ^ quote s)); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
644 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
645 |
fun read_typ sign (env, s) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
646 |
let |
5060 | 647 |
fun def_sort (x, ~1) = assoc (env, x) |
648 |
| def_sort _ = None; |
|
649 |
val T = Type.no_tvars (Sign.read_typ (sign, def_sort) s) handle TYPE (msg, _, _) => error msg; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
650 |
in (Term.add_typ_tfrees (T, env), T) end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
651 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
652 |
fun cert_typ sign (env, raw_T) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
653 |
let val T = Type.no_tvars (Sign.certify_typ sign raw_T) handle TYPE (msg, _, _) => error msg |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
654 |
in (Term.add_typ_tfrees (T, env), T) end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
655 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
656 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
657 |
(* add_record *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
658 |
|
4895 | 659 |
(*we do all preparations and error checks here, deferring the real |
660 |
work to record_definition*) |
|
4890 | 661 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
662 |
fun gen_add_record prep_typ prep_raw_parent (params, bname) raw_parent raw_fields thy = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
663 |
let |
4970 | 664 |
val _ = Theory.requires thy "Record" "record definitions"; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
665 |
val sign = Theory.sign_of thy; |
4895 | 666 |
val _ = writeln ("Defining record " ^ quote bname ^ " ..."); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
667 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
668 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
669 |
(* parents *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
670 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
671 |
fun prep_inst T = snd (cert_typ sign ([], T)); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
672 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
673 |
val parent = apsome (apfst (map prep_inst) o prep_raw_parent sign) raw_parent |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
674 |
handle ERROR => error ("The error(s) above in parent record specification"); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
675 |
val parents = add_parents thy (parent, []); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
676 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
677 |
val init_env = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
678 |
(case parent of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
679 |
None => [] |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
680 |
| Some (types, _) => foldr Term.add_typ_tfrees (types, [])); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
681 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
682 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
683 |
(* fields *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
684 |
|
4967 | 685 |
fun prep_field (env, (c, raw_T)) = |
686 |
let val (env', T) = prep_typ sign (env, raw_T) handle ERROR => |
|
687 |
error ("The error(s) above occured in field " ^ quote c) |
|
688 |
in (env', (c, T)) end; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
689 |
|
4967 | 690 |
val (envir, bfields) = foldl_map prep_field (init_env, raw_fields); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
691 |
val envir_names = map fst envir; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
692 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
693 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
694 |
(* args *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
695 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
696 |
val defaultS = Sign.defaultS sign; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
697 |
val args = map (fn x => (x, if_none (assoc (envir, x)) defaultS)) params; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
698 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
699 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
700 |
(* errors *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
701 |
|
4890 | 702 |
val name = Sign.full_name sign bname; |
703 |
val err_dup_record = |
|
704 |
if is_none (get_record thy name) then [] |
|
705 |
else ["Duplicate definition of record " ^ quote name]; |
|
706 |
||
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
707 |
val err_dup_parms = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
708 |
(case duplicates params of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
709 |
[] => [] |
4890 | 710 |
| dups => ["Duplicate parameter(s) " ^ commas dups]); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
711 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
712 |
val err_extra_frees = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
713 |
(case gen_rems (op =) (envir_names, params) of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
714 |
[] => [] |
4890 | 715 |
| extras => ["Extra free type variable(s) " ^ commas extras]); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
716 |
|
4890 | 717 |
val err_no_fields = if null bfields then ["No fields present"] else []; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
718 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
719 |
val err_dup_fields = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
720 |
(case duplicates (map fst bfields) of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
721 |
[] => [] |
4890 | 722 |
| dups => ["Duplicate field(s) " ^ commas_quote dups]); |
723 |
||
724 |
val err_bad_fields = |
|
725 |
if forall (not_equal moreN o fst) bfields then [] |
|
726 |
else ["Illegal field name " ^ quote moreN]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
727 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
728 |
val err_dup_sorts = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
729 |
(case duplicates envir_names of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
730 |
[] => [] |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
731 |
| dups => ["Inconsistent sort constraints for " ^ commas dups]); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
732 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
733 |
val errs = |
4890 | 734 |
err_dup_record @ err_dup_parms @ err_extra_frees @ err_no_fields @ |
735 |
err_dup_fields @ err_bad_fields @ err_dup_sorts; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
736 |
in |
4890 | 737 |
if null errs then () else error (cat_lines errs); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
738 |
thy |> record_definition (args, bname) parent parents bfields |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
739 |
end |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
740 |
handle ERROR => error ("Failed to define record " ^ quote bname); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
741 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
742 |
val add_record = gen_add_record read_typ read_raw_parent; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
743 |
val add_record_i = gen_add_record cert_typ (K I); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
744 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
745 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
746 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
747 |
(** setup theory **) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
748 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
749 |
val setup = |
5006 | 750 |
[RecordsData.init, |
5197 | 751 |
Theory.add_trfuns ([], parse_translation, [], [])]; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
752 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
753 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
754 |
end; |