author | wenzelm |
Sat, 27 Oct 2001 00:06:22 +0200 | |
changeset 11959 | ed914e8a0fd1 |
parent 11940 | 80365073b8b3 |
child 11967 | 49c7f03cd311 |
permissions | -rw-r--r-- |
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package extensible records with structural subtyping in HOL -- still
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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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License: GPL (GNU GENERAL PUBLIC LICENSE) |
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Extensible records with structural subtyping in HOL. |
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*) |
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signature BASIC_RECORD_PACKAGE = |
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sig |
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val record_simproc: simproc |
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val record_split_tac: int -> tactic |
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val record_split_name: string |
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val record_split_wrapper: string * wrapper |
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end; |
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signature RECORD_PACKAGE = |
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sig |
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include BASIC_RECORD_PACKAGE |
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val quiet_mode: bool ref |
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val updateN: string |
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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 * {simps: thm list, iffs: thm list} |
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val add_record_i: (string list * bstring) -> (typ list * string) option |
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-> (bstring * typ) list -> theory -> theory * {simps: thm list, iffs: thm list} |
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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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(*** theory context references ***) |
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val product_typeN = "Record.product_type"; |
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val product_typeI = thm "product_typeI"; |
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val product_type_inject = thm "product_type_inject"; |
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val product_type_conv1 = thm "product_type_conv1"; |
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val product_type_conv2 = thm "product_type_conv2"; |
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val product_type_induct = thm "product_type_induct"; |
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val product_type_cases = thm "product_type_cases"; |
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val product_type_split_paired_all = thm "product_type_split_paired_all"; |
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(*** utilities ***) |
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(* messages *) |
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val quiet_mode = ref false; |
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fun message s = if ! quiet_mode then () else writeln s; |
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(* fundamental syntax *) |
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fun prefix_base s = NameSpace.map_base (fn bname => s ^ bname); |
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val Trueprop = HOLogic.mk_Trueprop; |
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fun All xs t = Term.list_all_free (xs, t); |
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infix 9 $$; |
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infix 0 :== ===; |
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infixr 0 ==>; |
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val (op $$) = Term.list_comb; |
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val (op :==) = Logic.mk_defpair; |
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val (op ===) = Trueprop o HOLogic.mk_eq; |
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val (op ==>) = Logic.mk_implies; |
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(* proof tools *) |
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fun prove_goal sign goal tacs = |
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Goals.prove_goalw_cterm [] (Thm.cterm_of sign goal) tacs |
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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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fun prove_simp sign ss tacs simps = |
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let |
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val ss' = Simplifier.addsimps (ss, simps); |
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fun prove goal = prove_goal sign goal |
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(K (tacs @ [ALLGOALS (Simplifier.asm_full_simp_tac ss')])); |
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in prove end; |
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fun try_param_tac x s rule i st = |
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res_inst_tac [(x, (case Tactic.innermost_params i st of [] => s | (p, _) :: _ => p))] rule i st; |
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(*** syntax operations ***) |
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(** name components **) |
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val rN = "r"; |
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val moreN = "more"; |
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val schemeN = "_scheme"; |
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val field_typeN = "_field_type"; |
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val fieldN = "_field"; |
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val fstN = "_val"; |
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val sndN = "_more"; |
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val updateN = "_update"; |
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val makeN = "make"; |
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val extendN = "extend"; |
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val truncateN = "truncate"; |
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val fieldsN = "fields"; |
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(*see typedef_package.ML*) |
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val RepN = "Rep_"; |
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val AbsN = "Abs_"; |
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(** tuple operations **) |
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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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(* morphisms *) |
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fun mk_Rep U (c, T) = |
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Const (suffix field_typeN (prefix_base RepN c), |
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mk_fieldT ((c, T), U) --> HOLogic.mk_prodT (T, U)); |
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fun mk_Abs U (c, T) = |
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Const (suffix field_typeN (prefix_base AbsN c), |
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HOLogic.mk_prodT (T, U) --> mk_fieldT ((c, T), U)); |
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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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|
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val mk_record = foldr mk_field; |
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196 |
|
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197 |
|
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198 |
(* selectors *) |
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199 |
|
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fun mk_selC rT (c, T) = (c, rT --> T); |
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|
4890 | 202 |
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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|
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fun mk_named_sels names r = names ~~ map (mk_sel r) names; |
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207 |
|
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val mk_moreC = mk_selC; |
209 |
||
210 |
fun mk_more r c = |
|
211 |
let val rT = fastype_of r |
|
212 |
in Const (mk_moreC rT (c, snd (dest_recordT rT))) $ r end; |
|
213 |
||
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214 |
|
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(* updates *) |
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216 |
|
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fun mk_updateC rT (c, T) = (suffix updateN c, T --> rT --> rT); |
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|
4890 | 219 |
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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222 |
|
5197 | 223 |
val mk_more_updateC = mk_updateC; |
224 |
||
225 |
fun mk_more_update r (c, x) = |
|
226 |
let val rT = fastype_of r |
|
227 |
in Const (mk_more_updateC rT (c, snd (dest_recordT rT))) $ x $ r end; |
|
228 |
||
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229 |
|
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230 |
|
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231 |
(** concrete syntax for records **) |
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232 |
|
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233 |
(* parse translations *) |
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234 |
|
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fun gen_field_tr mark sfx (t as Const (c, _) $ Const (name, _) $ arg) = |
5197 | 236 |
if c = mark then Syntax.const (suffix sfx name) $ arg |
237 |
else raise TERM ("gen_field_tr: " ^ mark, [t]) |
|
238 |
| gen_field_tr mark _ t = raise TERM ("gen_field_tr: " ^ mark, [t]); |
|
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239 |
|
5197 | 240 |
fun gen_fields_tr sep mark sfx (tm as Const (c, _) $ t $ u) = |
241 |
if c = sep then gen_field_tr mark sfx t :: gen_fields_tr sep mark sfx u |
|
5201 | 242 |
else [gen_field_tr mark sfx tm] |
243 |
| gen_fields_tr _ mark sfx tm = [gen_field_tr mark sfx tm]; |
|
5197 | 244 |
|
245 |
fun gen_record_tr sep mark sfx unit [t] = foldr (op $) (gen_fields_tr sep mark sfx t, unit) |
|
5201 | 246 |
| gen_record_tr _ _ _ _ ts = raise TERM ("gen_record_tr", ts); |
5197 | 247 |
|
248 |
fun gen_record_scheme_tr sep mark sfx [t, more] = foldr (op $) (gen_fields_tr sep mark sfx t, more) |
|
5201 | 249 |
| gen_record_scheme_tr _ _ _ ts = raise TERM ("gen_record_scheme_tr", ts); |
5197 | 250 |
|
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251 |
|
5197 | 252 |
val record_type_tr = gen_record_tr "_field_types" "_field_type" field_typeN (Syntax.const "unit"); |
253 |
val record_type_scheme_tr = gen_record_scheme_tr "_field_types" "_field_type" field_typeN; |
|
254 |
||
255 |
val record_tr = gen_record_tr "_fields" "_field" fieldN HOLogic.unit; |
|
256 |
val record_scheme_tr = gen_record_scheme_tr "_fields" "_field" fieldN; |
|
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|
257 |
|
5197 | 258 |
fun record_update_tr [t, u] = |
259 |
foldr (op $) (rev (gen_fields_tr "_updates" "_update" updateN u), t) |
|
260 |
| record_update_tr ts = raise TERM ("record_update_tr", ts); |
|
261 |
||
262 |
||
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fun update_name_tr (Free (x, T) :: ts) = Free (suffix updateN x, T) $$ ts |
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| update_name_tr (Const (x, T) :: ts) = Const (suffix updateN x, T) $$ ts |
11833 | 265 |
| update_name_tr (((c as Const ("_constrain", _)) $ t $ ty) :: ts) = |
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(c $ update_name_tr [t] $ (Syntax.const "fun" $ ty $ Syntax.const "dummy")) $$ ts |
11833 | 267 |
| update_name_tr ts = raise TERM ("update_name_tr", ts); |
268 |
||
269 |
||
5197 | 270 |
val parse_translation = |
271 |
[("_record_type", record_type_tr), |
|
272 |
("_record_type_scheme", record_type_scheme_tr), |
|
273 |
("_record", record_tr), |
|
274 |
("_record_scheme", record_scheme_tr), |
|
11833 | 275 |
("_record_update", record_update_tr), |
276 |
("_update_name", update_name_tr)]; |
|
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277 |
|
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278 |
|
4890 | 279 |
(* print translations *) |
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280 |
|
5197 | 281 |
fun gen_fields_tr' mark sfx (tm as Const (name_field, _) $ t $ u) = |
282 |
(case try (unsuffix sfx) name_field of |
|
283 |
Some name => |
|
284 |
apfst (cons (Syntax.const mark $ Syntax.free name $ t)) (gen_fields_tr' mark sfx u) |
|
285 |
| None => ([], tm)) |
|
286 |
| gen_fields_tr' _ _ tm = ([], tm); |
|
287 |
||
288 |
fun gen_record_tr' sep mark sfx is_unit record record_scheme tm = |
|
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289 |
let |
5197 | 290 |
val (ts, u) = gen_fields_tr' mark sfx tm; |
291 |
val t' = foldr1 (fn (v, w) => Syntax.const sep $ v $ w) ts; |
|
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292 |
in |
5197 | 293 |
if is_unit u then Syntax.const record $ t' |
294 |
else Syntax.const record_scheme $ t' $ u |
|
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|
295 |
end; |
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296 |
|
5197 | 297 |
|
298 |
val record_type_tr' = |
|
299 |
gen_record_tr' "_field_types" "_field_type" field_typeN |
|
300 |
(fn Const ("unit", _) => true | _ => false) "_record_type" "_record_type_scheme"; |
|
301 |
||
302 |
val record_tr' = |
|
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gen_record_tr' "_fields" "_field" fieldN |
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304 |
(fn Const ("Unity", _) => true | _ => false) "_record" "_record_scheme"; |
5197 | 305 |
|
306 |
fun record_update_tr' tm = |
|
307 |
let val (ts, u) = gen_fields_tr' "_update" updateN tm in |
|
308 |
Syntax.const "_record_update" $ u $ |
|
309 |
foldr1 (fn (v, w) => Syntax.const "_updates" $ v $ w) (rev ts) |
|
310 |
end; |
|
311 |
||
312 |
||
5201 | 313 |
fun gen_field_tr' sfx tr' name = |
314 |
let val name_sfx = suffix sfx name |
|
315 |
in (name_sfx, fn [t, u] => tr' (Syntax.const name_sfx $ t $ u) | _ => raise Match) end; |
|
316 |
||
5197 | 317 |
fun print_translation names = |
318 |
map (gen_field_tr' field_typeN record_type_tr') names @ |
|
319 |
map (gen_field_tr' fieldN record_tr') names @ |
|
320 |
map (gen_field_tr' updateN record_update_tr') names; |
|
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|
321 |
|
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|
322 |
|
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|
323 |
|
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|
324 |
(*** extend theory by record definition ***) |
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|
325 |
|
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|
326 |
(** record info **) |
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|
327 |
|
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|
328 |
(* type record_info and parent_info *) |
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|
329 |
|
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|
330 |
type record_info = |
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|
331 |
{args: (string * sort) list, |
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|
332 |
parent: (typ list * string) option, |
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|
333 |
fields: (string * typ) list, |
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|
334 |
simps: thm list, induct: thm, cases: thm}; |
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|
335 |
|
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|
336 |
fun make_record_info args parent fields simps induct cases = |
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|
337 |
{args = args, parent = parent, fields = fields, simps = simps, |
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|
338 |
induct = induct, cases = cases}: record_info; |
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|
339 |
|
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|
340 |
type parent_info = |
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|
341 |
{name: string, |
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|
342 |
fields: (string * typ) list, |
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|
343 |
simps: thm list, induct: thm, cases: thm}; |
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|
344 |
|
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|
345 |
fun make_parent_info name fields simps induct cases = |
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|
346 |
{name = name, fields = fields, simps = simps, |
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|
347 |
induct = induct, cases = cases}: parent_info; |
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|
348 |
|
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|
349 |
|
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|
350 |
|
5052 | 351 |
(* data kind 'HOL/records' *) |
5001 | 352 |
|
7178 | 353 |
type record_data = |
354 |
{records: record_info Symtab.table, |
|
355 |
sel_upd: |
|
356 |
{selectors: unit Symtab.table, |
|
357 |
updates: string Symtab.table, |
|
358 |
simpset: Simplifier.simpset}, |
|
359 |
field_splits: |
|
360 |
{fields: unit Symtab.table, |
|
361 |
simpset: Simplifier.simpset}}; |
|
362 |
||
363 |
fun make_record_data records sel_upd field_splits = |
|
364 |
{records = records, sel_upd = sel_upd, field_splits = field_splits}: record_data; |
|
365 |
||
5006 | 366 |
structure RecordsArgs = |
367 |
struct |
|
368 |
val name = "HOL/records"; |
|
7178 | 369 |
type T = record_data; |
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|
370 |
|
7178 | 371 |
val empty = |
372 |
make_record_data Symtab.empty |
|
373 |
{selectors = Symtab.empty, updates = Symtab.empty, simpset = HOL_basic_ss} |
|
374 |
{fields = Symtab.empty, simpset = HOL_basic_ss}; |
|
375 |
||
6556 | 376 |
val copy = I; |
5006 | 377 |
val prep_ext = I; |
7178 | 378 |
fun merge |
379 |
({records = recs1, |
|
380 |
sel_upd = {selectors = sels1, updates = upds1, simpset = ss1}, |
|
381 |
field_splits = {fields = flds1, simpset = fld_ss1}}, |
|
382 |
{records = recs2, |
|
383 |
sel_upd = {selectors = sels2, updates = upds2, simpset = ss2}, |
|
384 |
field_splits = {fields = flds2, simpset = fld_ss2}}) = |
|
385 |
make_record_data |
|
386 |
(Symtab.merge (K true) (recs1, recs2)) |
|
387 |
{selectors = Symtab.merge (K true) (sels1, sels2), |
|
388 |
updates = Symtab.merge (K true) (upds1, upds2), |
|
389 |
simpset = Simplifier.merge_ss (ss1, ss2)} |
|
390 |
{fields = Symtab.merge (K true) (flds1, flds2), |
|
391 |
simpset = Simplifier.merge_ss (fld_ss1, fld_ss2)}; |
|
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|
392 |
|
7178 | 393 |
fun print sg ({records = recs, ...}: record_data) = |
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|
394 |
let |
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|
395 |
val prt_typ = Sign.pretty_typ sg; |
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changeset
|
396 |
val ext_const = Sign.cond_extern sg Sign.constK; |
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|
397 |
|
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|
398 |
fun pretty_parent None = [] |
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|
399 |
| pretty_parent (Some (Ts, name)) = |
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changeset
|
400 |
[Pretty.block [prt_typ (Type (name, Ts)), Pretty.str " +"]]; |
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diff
changeset
|
401 |
|
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changeset
|
402 |
fun pretty_field (c, T) = Pretty.block |
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diff
changeset
|
403 |
[Pretty.str (ext_const c), Pretty.str " ::", Pretty.brk 1, Pretty.quote (prt_typ T)]; |
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diff
changeset
|
404 |
|
11927
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changeset
|
405 |
fun pretty_record (name, {args, parent, fields, simps = _, induct = _, cases = _}) = |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
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changeset
|
406 |
Pretty.block (Pretty.fbreaks (Pretty.block |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
407 |
[prt_typ (Type (name, map TFree args)), Pretty.str " = "] :: |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
408 |
pretty_parent parent @ map pretty_field fields)); |
8720 | 409 |
in |
410 |
map pretty_record (Sign.cond_extern_table sg Sign.typeK recs) |
|
411 |
|> Pretty.chunks |> Pretty.writeln |
|
412 |
end; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
413 |
end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
414 |
|
5006 | 415 |
structure RecordsData = TheoryDataFun(RecordsArgs); |
416 |
val print_records = RecordsData.print; |
|
417 |
||
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
418 |
|
7178 | 419 |
(* access 'records' *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
420 |
|
7178 | 421 |
fun get_record thy name = Symtab.lookup (#records (RecordsData.get thy), name); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
422 |
|
4890 | 423 |
fun put_record name info thy = |
7178 | 424 |
let |
425 |
val {records, sel_upd, field_splits} = RecordsData.get thy; |
|
426 |
val data = make_record_data (Symtab.update ((name, info), records)) sel_upd field_splits; |
|
427 |
in RecordsData.put data thy end; |
|
428 |
||
429 |
||
430 |
(* access 'sel_upd' *) |
|
431 |
||
432 |
fun get_sel_upd sg = #sel_upd (RecordsData.get_sg sg); |
|
433 |
||
434 |
fun get_selectors sg name = Symtab.lookup (#selectors (get_sel_upd sg), name); |
|
435 |
fun get_updates sg name = Symtab.lookup (#updates (get_sel_upd sg), name); |
|
436 |
fun get_simpset sg = #simpset (get_sel_upd sg); |
|
437 |
||
438 |
||
439 |
fun put_sel_upd names simps thy = |
|
440 |
let |
|
441 |
val sels = map (rpair ()) names; |
|
442 |
val upds = map (suffix updateN) names ~~ names; |
|
443 |
||
444 |
val {records, sel_upd = {selectors, updates, simpset}, field_splits} = RecordsData.get thy; |
|
445 |
val data = make_record_data records |
|
446 |
{selectors = Symtab.extend (selectors, sels), |
|
447 |
updates = Symtab.extend (updates, upds), |
|
448 |
simpset = Simplifier.addsimps (simpset, simps)} |
|
449 |
field_splits; |
|
450 |
in RecordsData.put data thy end; |
|
451 |
||
452 |
||
453 |
(* access 'field_splits' *) |
|
5698 | 454 |
|
455 |
fun add_record_splits splits thy = |
|
456 |
let |
|
7178 | 457 |
val {records, sel_upd, field_splits = {fields, simpset}} = RecordsData.get thy; |
458 |
val flds = map (rpair () o fst) splits; |
|
459 |
val simps = map snd splits; |
|
460 |
val data = make_record_data records sel_upd |
|
461 |
{fields = Symtab.extend (fields, flds), simpset = Simplifier.addsimps (simpset, simps)}; |
|
462 |
in RecordsData.put data thy end; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
463 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
464 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
465 |
(* parent records *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
466 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
467 |
fun inst_record thy (types, name) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
468 |
let |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
469 |
val sign = Theory.sign_of thy; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
470 |
fun err msg = error (msg ^ " parent record " ^ quote name); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
471 |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
472 |
val {args, parent, fields, simps, induct, cases} = |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
473 |
(case get_record thy name of Some info => info | None => err "Unknown"); |
4895 | 474 |
val _ = if length types <> length args then err "Bad number of arguments for" else (); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
475 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
476 |
fun bad_inst ((x, S), T) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
477 |
if Sign.of_sort sign (T, S) then None else Some x |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
478 |
val bads = mapfilter bad_inst (args ~~ types); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
479 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
480 |
val inst = map fst args ~~ types; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
481 |
val subst = Term.map_type_tfree (fn (x, _) => the (assoc (inst, x))); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
482 |
in |
4895 | 483 |
if not (null bads) then |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
484 |
err ("Ill-sorted instantiation of " ^ commas bads ^ " in") |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
485 |
else (apsome (apfst (map subst)) parent, map (apsnd subst) fields, simps, induct, cases) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
486 |
end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
487 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
488 |
fun add_parents thy (None, parents) = parents |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
489 |
| add_parents thy (Some (types, name), parents) = |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
490 |
let val (parent, fields, simps, induct, cases) = inst_record thy (types, name) |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
491 |
in add_parents thy (parent, make_parent_info name fields simps induct cases :: parents) end; |
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 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
494 |
|
7178 | 495 |
(** record simproc **) |
496 |
||
497 |
local |
|
498 |
||
8100 | 499 |
val sel_upd_pat = [Thm.read_cterm (Theory.sign_of HOL.thy) ("s (u k r)", HOLogic.termT)]; |
7178 | 500 |
|
501 |
fun proc sg _ t = |
|
502 |
(case t of (sel as Const (s, _)) $ ((upd as Const (u, _)) $ k $ r) => |
|
503 |
(case get_selectors sg s of Some () => |
|
504 |
(case get_updates sg u of Some u_name => |
|
505 |
let |
|
506 |
fun atomize x t = Free (x, fastype_of t); |
|
507 |
val k' = atomize "k" k; |
|
508 |
val r' = atomize "r" r; |
|
509 |
val t' = sel $ (upd $ k' $ r'); |
|
510 |
val prove = mk_meta_eq o prove_simp sg (get_simpset sg) [] []; |
|
511 |
in |
|
512 |
if u_name = s then Some (prove (t' === k')) |
|
513 |
else Some (prove (t' === sel $ r')) |
|
514 |
end |
|
515 |
| None => None) |
|
516 |
| None => None) |
|
517 |
| _ => None); |
|
518 |
||
519 |
in |
|
520 |
||
521 |
val record_simproc = Simplifier.mk_simproc "record_simp" sel_upd_pat proc; |
|
522 |
||
523 |
end; |
|
524 |
||
525 |
||
526 |
||
5698 | 527 |
(** record field splitting **) |
528 |
||
6358 | 529 |
(* tactic *) |
530 |
||
5698 | 531 |
fun record_split_tac i st = |
532 |
let |
|
7178 | 533 |
val {field_splits = {fields, simpset}, ...} = RecordsData.get_sg (Thm.sign_of_thm st); |
5698 | 534 |
|
7178 | 535 |
fun is_fieldT (_, Type (a, [_, _])) = is_some (Symtab.lookup (fields, a)) |
5698 | 536 |
| is_fieldT _ = false; |
537 |
val params = Logic.strip_params (Library.nth_elem (i - 1, Thm.prems_of st)); |
|
538 |
in |
|
7178 | 539 |
if exists is_fieldT params then Simplifier.full_simp_tac simpset i st |
5698 | 540 |
else Seq.empty |
541 |
end handle Library.LIST _ => Seq.empty; |
|
542 |
||
6358 | 543 |
|
544 |
(* wrapper *) |
|
545 |
||
5707 | 546 |
val record_split_name = "record_split_tac"; |
547 |
val record_split_wrapper = (record_split_name, fn tac => record_split_tac ORELSE' tac); |
|
5698 | 548 |
|
549 |
||
6358 | 550 |
(* method *) |
551 |
||
552 |
val record_split_method = |
|
9705 | 553 |
("record_split", Method.no_args (Method.SIMPLE_METHOD' HEADGOAL record_split_tac), |
6358 | 554 |
"split record fields"); |
555 |
||
556 |
||
4890 | 557 |
(** internal theory extenders **) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
558 |
|
11832 | 559 |
(* field_typedefs *) |
5698 | 560 |
|
11832 | 561 |
fun field_typedefs zeta moreT names theory = |
5698 | 562 |
let |
11832 | 563 |
val alpha = "'a"; |
564 |
val aT = TFree (alpha, HOLogic.termS); |
|
565 |
val UNIV = HOLogic.mk_UNIV (HOLogic.mk_prodT (aT, moreT)); |
|
5698 | 566 |
|
11832 | 567 |
fun type_def (thy, name) = |
11940 | 568 |
let val (thy', {type_definition, set_def = Some def, ...}) = |
569 |
thy |> setmp TypedefPackage.quiet_mode true |
|
11832 | 570 |
(TypedefPackage.add_typedef_i true None |
571 |
(suffix field_typeN (Sign.base_name name), [alpha, zeta], Syntax.NoSyn) UNIV None |
|
572 |
(Tactic.rtac UNIV_witness 1)) |
|
573 |
in (thy', Tactic.rewrite_rule [def] type_definition) end |
|
574 |
in foldl_map type_def (theory, names) end; |
|
5698 | 575 |
|
576 |
||
4894 | 577 |
(* field_definitions *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
578 |
|
11832 | 579 |
fun field_definitions fields names xs alphas zeta moreT more vars named_vars thy = |
4890 | 580 |
let |
5698 | 581 |
val sign = Theory.sign_of thy; |
4890 | 582 |
val base = Sign.base_name; |
5698 | 583 |
val full_path = Sign.full_name_path sign; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
584 |
|
11832 | 585 |
val xT = TFree (variant alphas "'x", HOLogic.termS); |
586 |
||
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
587 |
|
4890 | 588 |
(* prepare declarations and definitions *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
589 |
|
5698 | 590 |
(*field constructors*) |
4890 | 591 |
val field_decls = map (mk_fieldC moreT) fields; |
592 |
||
11832 | 593 |
fun mk_field_spec ((c, T), v) = |
594 |
Term.head_of (mk_field ((c, v), more)) :== |
|
595 |
lambda v (lambda more (mk_Abs moreT (c, T) $ (HOLogic.mk_prod (v, more)))); |
|
596 |
val field_specs = map mk_field_spec (fields ~~ vars); |
|
4890 | 597 |
|
598 |
(*field destructors*) |
|
5698 | 599 |
val dest_decls = map (mk_fstC moreT) fields @ map (mk_sndC moreT) fields; |
600 |
||
11832 | 601 |
fun mk_dest_spec dest sel (c, T) = |
5698 | 602 |
let val p = Free ("p", mk_fieldT ((c, T), moreT)); |
11832 | 603 |
in Term.head_of (dest p) :== lambda p (sel (mk_Rep moreT (c, T) $ p)) end; |
604 |
val dest_specs1 = map (mk_dest_spec mk_fst HOLogic.mk_fst) fields; |
|
605 |
val dest_specs2 = map (mk_dest_spec mk_snd HOLogic.mk_snd) fields; |
|
4890 | 606 |
|
607 |
||
11832 | 608 |
(* 1st stage: defs_thy *) |
5713 | 609 |
|
11832 | 610 |
val (defs_thy, (((typedefs, field_defs), dest_defs1), dest_defs2)) = |
611 |
thy |
|
612 |
|> field_typedefs zeta moreT names |
|
613 |
|>> (Theory.add_consts_i o map (Syntax.no_syn o apfst base)) (field_decls @ dest_decls) |
|
614 |
|>>> (PureThy.add_defs_i false o map Thm.no_attributes) field_specs |
|
615 |
|>>> (PureThy.add_defs_i false o map Thm.no_attributes) dest_specs1 |
|
616 |
|>>> (PureThy.add_defs_i false o map Thm.no_attributes) dest_specs2; |
|
4890 | 617 |
|
11832 | 618 |
val prod_types = map (fn (((a, b), c), d) => product_typeI OF [a, b, c, d]) |
619 |
(typedefs ~~ field_defs ~~ dest_defs1 ~~ dest_defs2); |
|
4890 | 620 |
|
5698 | 621 |
|
11832 | 622 |
(* 2nd stage: thms_thy *) |
5698 | 623 |
|
11832 | 624 |
fun make th = map (fn prod_type => Drule.standard (th OF [prod_type])) prod_types; |
4890 | 625 |
|
11940 | 626 |
val dest_convs = make product_type_conv1 @ make product_type_conv2; |
11832 | 627 |
val field_injects = make product_type_inject; |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
628 |
val field_inducts = make product_type_induct; |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
629 |
val field_cases = make product_type_cases; |
11832 | 630 |
val field_splits = make product_type_split_paired_all; |
4894 | 631 |
|
11940 | 632 |
val (thms_thy, [field_defs', dest_defs', dest_convs', field_injects', |
633 |
field_splits', field_inducts', field_cases']) = defs_thy |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
634 |
|> (PureThy.add_thmss o map Thm.no_attributes) |
11940 | 635 |
[("field_defs", field_defs), |
636 |
("dest_defs", dest_defs1 @ dest_defs2), |
|
637 |
("dest_convs", dest_convs), |
|
638 |
("field_injects", field_injects), |
|
639 |
("field_splits", field_splits), |
|
640 |
("field_inducts", field_inducts), |
|
641 |
("field_cases", field_cases)]; |
|
4890 | 642 |
|
11940 | 643 |
in (thms_thy, dest_convs', field_injects', field_splits', field_inducts', field_cases') end; |
4890 | 644 |
|
645 |
||
646 |
(* record_definition *) |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
647 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
648 |
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
|
649 |
let |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
650 |
val sign = Theory.sign_of thy; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
651 |
val full = Sign.full_name_path sign bname; |
4890 | 652 |
val base = Sign.base_name; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
653 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
654 |
|
4890 | 655 |
(* basic components *) |
4867
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 |
val alphas = map fst args; |
5197 | 658 |
val name = Sign.full_name sign bname; (*not made part of record name space!*) |
4890 | 659 |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
660 |
val previous = if null parents then None else Some (last_elem parents); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
661 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
662 |
val parent_fields = flat (map #fields parents); |
4890 | 663 |
val parent_names = map fst parent_fields; |
664 |
val parent_types = map snd parent_fields; |
|
665 |
val parent_len = length parent_fields; |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
666 |
val parent_xs = variantlist (map (base o fst) parent_fields, [moreN, rN]); |
4890 | 667 |
val parent_vars = ListPair.map Free (parent_xs, parent_types); |
4894 | 668 |
val parent_named_vars = parent_names ~~ parent_vars; |
4890 | 669 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
670 |
val fields = map (apfst full) bfields; |
4890 | 671 |
val names = map fst fields; |
672 |
val types = map snd fields; |
|
673 |
val len = length fields; |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
674 |
val xs = variantlist (map fst bfields, moreN :: rN :: parent_xs); |
4890 | 675 |
val vars = ListPair.map Free (xs, types); |
4894 | 676 |
val named_vars = names ~~ vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
677 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
678 |
val all_fields = parent_fields @ fields; |
4890 | 679 |
val all_names = parent_names @ names; |
680 |
val all_types = parent_types @ types; |
|
681 |
val all_len = parent_len + len; |
|
682 |
val all_xs = parent_xs @ xs; |
|
683 |
val all_vars = parent_vars @ vars; |
|
4894 | 684 |
val all_named_vars = parent_named_vars @ named_vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
685 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
686 |
val zeta = variant alphas "'z"; |
11940 | 687 |
val moreT = TFree (zeta, HOLogic.termS); |
4895 | 688 |
val more = Free (moreN, moreT); |
5197 | 689 |
val full_moreN = full moreN; |
690 |
fun more_part t = mk_more t full_moreN; |
|
691 |
fun more_part_update t x = mk_more_update t (full_moreN, x); |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
692 |
val all_types_more = all_types @ [moreT]; |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
693 |
val all_xs_more = all_xs @ [moreN]; |
4894 | 694 |
|
695 |
val parent_more = funpow parent_len mk_snd; |
|
696 |
val idxs = 0 upto (len - 1); |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
697 |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
698 |
val parentT = if null parent_fields then [] else [mk_recordT (parent_fields, HOLogic.unitT)]; |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
699 |
val r_parent = if null parent_fields then [] else [Free (rN, hd parentT)]; |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
700 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
701 |
val rec_schemeT = mk_recordT (all_fields, moreT); |
4894 | 702 |
val rec_scheme = mk_record (all_named_vars, more); |
703 |
val recT = mk_recordT (all_fields, HOLogic.unitT); |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
704 |
val rec_ = mk_record (all_named_vars, HOLogic.unit); |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
705 |
val r_scheme = Free (rN, rec_schemeT); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
706 |
val r = Free (rN, recT); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
707 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
708 |
|
4890 | 709 |
(* prepare print translation functions *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
710 |
|
5698 | 711 |
val field_tr's = |
712 |
print_translation (distinct (flat (map NameSpace.accesses (full_moreN :: names)))); |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
713 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
714 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
715 |
(* prepare declarations *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
716 |
|
5197 | 717 |
val sel_decls = map (mk_selC rec_schemeT) bfields @ |
718 |
[mk_moreC rec_schemeT (moreN, moreT)]; |
|
719 |
val update_decls = map (mk_updateC rec_schemeT) bfields @ |
|
720 |
[mk_more_updateC rec_schemeT (moreN, moreT)]; |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
721 |
val make_decl = (makeN, parentT ---> types ---> recT); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
722 |
val extend_decl = (extendN, recT --> moreT --> rec_schemeT); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
723 |
val truncate_decl = (truncateN, rec_schemeT --> recT); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
724 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
725 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
726 |
(* prepare definitions *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
727 |
|
4895 | 728 |
(*record (scheme) type abbreviation*) |
4890 | 729 |
val recordT_specs = |
730 |
[(suffix schemeN bname, alphas @ [zeta], rec_schemeT, Syntax.NoSyn), |
|
731 |
(bname, alphas, recT, Syntax.NoSyn)]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
732 |
|
4894 | 733 |
(*selectors*) |
4890 | 734 |
fun mk_sel_spec (i, c) = |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
735 |
mk_sel r_scheme c :== mk_fst (funpow i mk_snd (parent_more r_scheme)); |
4894 | 736 |
val sel_specs = |
737 |
ListPair.map mk_sel_spec (idxs, names) @ |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
738 |
[more_part r_scheme :== funpow len mk_snd (parent_more r_scheme)]; |
4890 | 739 |
|
740 |
(*updates*) |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
741 |
val all_sels = mk_named_sels all_names r_scheme; |
4890 | 742 |
fun mk_upd_spec (i, (c, x)) = |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
743 |
mk_update r_scheme (c, x) :== |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
744 |
mk_record (nth_update (c, x) (parent_len + i, all_sels), more_part r_scheme) |
5197 | 745 |
val update_specs = |
746 |
ListPair.map mk_upd_spec (idxs, named_vars) @ |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
747 |
[more_part_update r_scheme more :== mk_record (all_sels, more)]; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
748 |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
749 |
(*derived operations*) |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
750 |
val make_spec = Const (full makeN, parentT ---> types ---> recT) $$ r_parent $$ vars :== |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
751 |
mk_record (flat (map (mk_named_sels parent_names) r_parent) @ named_vars, HOLogic.unit); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
752 |
val extend_spec = Const (full extendN, recT --> moreT --> rec_schemeT) $ r $ more :== |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
753 |
mk_record (mk_named_sels all_names r, more); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
754 |
val truncate_spec = Const (full truncateN, rec_schemeT --> recT) $ r_scheme :== |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
755 |
mk_record (all_sels, HOLogic.unit); |
4894 | 756 |
|
757 |
||
758 |
(* prepare propositions *) |
|
759 |
||
760 |
(*selectors*) |
|
761 |
val sel_props = |
|
762 |
map (fn (c, x) => mk_sel rec_scheme c === x) named_vars @ |
|
763 |
[more_part rec_scheme === more]; |
|
764 |
||
765 |
(*updates*) |
|
766 |
fun mk_upd_prop (i, (c, T)) = |
|
767 |
let val x' = Free (variant all_xs (base c ^ "'"), T) in |
|
768 |
mk_update rec_scheme (c, x') === |
|
769 |
mk_record (nth_update (c, x') (parent_len + i, all_named_vars), more) |
|
770 |
end; |
|
5197 | 771 |
val update_props = |
772 |
ListPair.map mk_upd_prop (idxs, fields) @ |
|
773 |
let val more' = Free (variant all_xs (moreN ^ "'"), moreT) |
|
774 |
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
|
775 |
|
9626 | 776 |
(*equality*) |
777 |
fun mk_sel_eq (t, T) = |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
778 |
let val t' = Term.abstract_over (r_scheme, t) |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
779 |
in Trueprop (HOLogic.eq_const T $ Term.incr_boundvars 1 t' $ t') end; |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
780 |
val sel_eqs = |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
781 |
map2 mk_sel_eq (map (mk_sel r_scheme) all_names @ [more_part r_scheme], all_types @ [moreT]); |
9626 | 782 |
val equality_prop = |
783 |
Term.all rec_schemeT $ (Abs ("r", rec_schemeT, |
|
784 |
Term.all rec_schemeT $ (Abs ("r'", rec_schemeT, |
|
785 |
Logic.list_implies (sel_eqs, |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
786 |
Trueprop (HOLogic.eq_const rec_schemeT $ Bound 1 $ Bound 0)))))); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
787 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
788 |
(*induct*) |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
789 |
val P = Free ("P", rec_schemeT --> HOLogic.boolT); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
790 |
val P' = Free ("P", recT --> HOLogic.boolT); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
791 |
val induct_scheme_prop = |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
792 |
All (all_xs_more ~~ all_types_more) (Trueprop (P $ rec_scheme)) ==> Trueprop (P $ r_scheme); |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
793 |
val induct_prop = All (all_xs ~~ all_types) (Trueprop (P' $ rec_)) ==> Trueprop (P' $ r); |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
794 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
795 |
(*cases*) |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
796 |
val C = Trueprop (Free (variant all_xs_more "C", HOLogic.boolT)); |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
797 |
val cases_scheme_prop = |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
798 |
All (all_xs_more ~~ all_types_more) ((r_scheme === rec_scheme) ==> C) ==> C; |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
799 |
val cases_prop = All (all_xs ~~ all_types) ((r === rec_) ==> C) ==> C; |
9626 | 800 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
801 |
|
4890 | 802 |
(* 1st stage: fields_thy *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
803 |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
804 |
val (fields_thy, field_simps, field_injects, field_splits, field_inducts, field_cases) = |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
805 |
thy |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
806 |
|> Theory.add_path bname |
11832 | 807 |
|> field_definitions fields names xs alphas zeta moreT more vars named_vars; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
808 |
|
6092 | 809 |
val named_splits = map2 (fn (c, th) => (suffix field_typeN c, th)) (names, field_splits); |
5698 | 810 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
811 |
|
4890 | 812 |
(* 2nd stage: defs_thy *) |
813 |
||
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
814 |
val (defs_thy, (((sel_defs, update_defs), derived_defs))) = |
4890 | 815 |
fields_thy |
9626 | 816 |
|> add_record_splits named_splits |
4890 | 817 |
|> Theory.parent_path |
5197 | 818 |
|> Theory.add_tyabbrs_i recordT_specs (*not made part of record name space!*) |
4890 | 819 |
|> Theory.add_path bname |
5197 | 820 |
|> Theory.add_trfuns ([], [], field_tr's, []) |
4894 | 821 |
|> (Theory.add_consts_i o map Syntax.no_syn) |
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
822 |
(sel_decls @ update_decls @ [make_decl, extend_decl, truncate_decl]) |
11832 | 823 |
|> (PureThy.add_defs_i false o map Thm.no_attributes) sel_specs |
824 |
|>>> (PureThy.add_defs_i false o map Thm.no_attributes) update_specs |
|
11934
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
825 |
|>>> (PureThy.add_defs_i false o map Thm.no_attributes) |
6c1bf72430b6
derived operations are now: make, extend, truncate (cf. derived_defs);
wenzelm
parents:
11927
diff
changeset
|
826 |
[make_spec, extend_spec, truncate_spec]; |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
827 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
828 |
val defs_sg = Theory.sign_of defs_thy; |
4890 | 829 |
|
830 |
||
831 |
(* 3rd stage: thms_thy *) |
|
832 |
||
4895 | 833 |
val parent_simps = flat (map #simps parents); |
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
834 |
val prove = prove_simp defs_sg HOL_basic_ss []; |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
835 |
val prove' = prove_simp defs_sg HOL_ss; |
4890 | 836 |
|
4895 | 837 |
val sel_convs = map (prove (parent_simps @ sel_defs @ field_simps)) sel_props; |
838 |
val update_convs = map (prove (parent_simps @ update_defs @ sel_convs)) update_props; |
|
9626 | 839 |
val equality = |
840 |
prove' [ALLGOALS record_split_tac] (parent_simps @ sel_convs @ field_injects) equality_prop; |
|
4894 | 841 |
|
11927
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
842 |
val induct_scheme = prove_goal defs_sg induct_scheme_prop (fn prems => |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
843 |
(case previous of Some {induct, ...} => res_inst_tac [(rN, rN)] induct 1 |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
844 |
| None => all_tac) :: map (fn rule => try_param_tac "p" rN rule 1) field_inducts @ |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
845 |
[resolve_tac prems 1]); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
846 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
847 |
val induct = prove_goal defs_sg induct_prop (fn prems => |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
848 |
[res_inst_tac [(rN, rN)] induct_scheme 1, |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
849 |
try_param_tac "x" "more" unit_induct 1, resolve_tac prems 1]); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
850 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
851 |
val cases_scheme = prove_goal defs_sg cases_scheme_prop (fn prems => |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
852 |
Method.insert_tac prems 1 :: |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
853 |
(case previous of Some {cases, ...} => try_param_tac rN rN cases 1 |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
854 |
| None => all_tac) :: map (fn rule => try_param_tac "p" rN rule 1) field_cases @ |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
855 |
[Simplifier.asm_full_simp_tac HOL_basic_ss 1]); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
856 |
|
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
857 |
val cases = prove_goal defs_sg cases_prop (fn prems => |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
858 |
[Method.insert_tac prems 1, res_inst_tac [(rN, rN)] cases_scheme 1, |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
859 |
Simplifier.asm_full_simp_tac (HOL_basic_ss addsimps [unit_all_eq1]) 1]); |
96f267adc029
provodes induct/cases for use with corresponding Isar methods;
wenzelm
parents:
11923
diff
changeset
|
860 |
|
11940 | 861 |
val (thms_thy, ([sel_convs', update_convs', sel_defs', update_defs', _], |
862 |
[equality', induct_scheme', induct', cases_scheme', cases'])) = |
|
863 |
defs_thy |
|
864 |
|> (PureThy.add_thmss o map Thm.no_attributes) |
|
865 |
[("select_convs", sel_convs), |
|
866 |
("update_convs", update_convs), |
|
867 |
("select_defs", sel_defs), |
|
868 |
("update_defs", update_defs), |
|
869 |
("derived_defs", derived_defs)] |
|
870 |
|>>> PureThy.add_thms |
|
871 |
[(("equality", equality), [Classical.xtra_intro_global]), |
|
872 |
(("induct_scheme", induct_scheme), [RuleCases.case_names [fieldsN], |
|
873 |
InductAttrib.induct_type_global (suffix schemeN name)]), |
|
874 |
(("induct", induct), [RuleCases.case_names [fieldsN], |
|
875 |
InductAttrib.induct_type_global name]), |
|
876 |
(("cases_scheme", cases_scheme), [RuleCases.case_names [fieldsN], |
|
877 |
InductAttrib.cases_type_global (suffix schemeN name)]), |
|
878 |
(("cases", cases), [RuleCases.case_names [fieldsN], |
|
879 |
InductAttrib.cases_type_global name])]; |
|
880 |
||
11959 | 881 |
val simps = sel_convs' @ update_convs' @ [equality']; |
6519 | 882 |
val iffs = field_injects; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
883 |
|
11940 | 884 |
val thms_thy' = |
885 |
thms_thy |> (#1 oo PureThy.add_thmss) |
|
5707 | 886 |
[(("simps", simps), [Simplifier.simp_add_global]), |
6519 | 887 |
(("iffs", iffs), [iff_add_global])]; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
888 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
889 |
|
4890 | 890 |
(* 4th stage: final_thy *) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
891 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
892 |
val final_thy = |
11940 | 893 |
thms_thy' |
11959 | 894 |
|> put_record name (make_record_info args parent fields (field_simps @ simps) |
895 |
induct_scheme' cases_scheme') |
|
11940 | 896 |
|> put_sel_upd (names @ [full_moreN]) (field_simps @ sel_defs' @ update_defs') |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
897 |
|> Theory.parent_path; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
898 |
|
6519 | 899 |
in (final_thy, {simps = simps, iffs = iffs}) end; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
900 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
901 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
902 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
903 |
(** theory extender interface **) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
904 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
905 |
(* prepare arguments *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
906 |
|
4894 | 907 |
(*note: read_raw_typ avoids expanding type abbreviations*) |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
908 |
fun read_raw_parent sign s = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
909 |
(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
|
910 |
Type (name, Ts) => (Ts, name) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
911 |
| _ => error ("Bad parent record specification: " ^ quote s)); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
912 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
913 |
fun read_typ sign (env, s) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
914 |
let |
5060 | 915 |
fun def_sort (x, ~1) = assoc (env, x) |
916 |
| def_sort _ = None; |
|
917 |
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
|
918 |
in (Term.add_typ_tfrees (T, env), T) end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
919 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
920 |
fun cert_typ sign (env, raw_T) = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
921 |
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
|
922 |
in (Term.add_typ_tfrees (T, env), T) end; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
923 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
924 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
925 |
(* add_record *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
926 |
|
4895 | 927 |
(*we do all preparations and error checks here, deferring the real |
928 |
work to record_definition*) |
|
4890 | 929 |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
930 |
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
|
931 |
let |
4970 | 932 |
val _ = Theory.requires thy "Record" "record definitions"; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
933 |
val sign = Theory.sign_of thy; |
5698 | 934 |
val _ = message ("Defining record " ^ quote bname ^ " ..."); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
935 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
936 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
937 |
(* parents *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
938 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
939 |
fun prep_inst T = snd (cert_typ sign ([], T)); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
940 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
941 |
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
|
942 |
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
|
943 |
val parents = add_parents thy (parent, []); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
944 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
945 |
val init_env = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
946 |
(case parent of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
947 |
None => [] |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
948 |
| Some (types, _) => foldr Term.add_typ_tfrees (types, [])); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
949 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
950 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
951 |
(* fields *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
952 |
|
4967 | 953 |
fun prep_field (env, (c, raw_T)) = |
954 |
let val (env', T) = prep_typ sign (env, raw_T) handle ERROR => |
|
955 |
error ("The error(s) above occured in field " ^ quote c) |
|
956 |
in (env', (c, T)) end; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
957 |
|
4967 | 958 |
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
|
959 |
val envir_names = map fst envir; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
960 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
961 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
962 |
(* args *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
963 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
964 |
val defaultS = Sign.defaultS sign; |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
965 |
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
|
966 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
967 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
968 |
(* errors *) |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
969 |
|
4890 | 970 |
val name = Sign.full_name sign bname; |
971 |
val err_dup_record = |
|
972 |
if is_none (get_record thy name) then [] |
|
973 |
else ["Duplicate definition of record " ^ quote name]; |
|
974 |
||
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
975 |
val err_dup_parms = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
976 |
(case duplicates params of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
977 |
[] => [] |
4890 | 978 |
| dups => ["Duplicate parameter(s) " ^ commas dups]); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
979 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
980 |
val err_extra_frees = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
981 |
(case gen_rems (op =) (envir_names, params) of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
982 |
[] => [] |
4890 | 983 |
| extras => ["Extra free type variable(s) " ^ commas extras]); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
984 |
|
4890 | 985 |
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
|
986 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
987 |
val err_dup_fields = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
988 |
(case duplicates (map fst bfields) of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
989 |
[] => [] |
4890 | 990 |
| dups => ["Duplicate field(s) " ^ commas_quote dups]); |
991 |
||
992 |
val err_bad_fields = |
|
993 |
if forall (not_equal moreN o fst) bfields then [] |
|
994 |
else ["Illegal field name " ^ quote moreN]; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
995 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
996 |
val err_dup_sorts = |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
997 |
(case duplicates envir_names of |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
998 |
[] => [] |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
999 |
| dups => ["Inconsistent sort constraints for " ^ commas dups]); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1000 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1001 |
val errs = |
4890 | 1002 |
err_dup_record @ err_dup_parms @ err_extra_frees @ err_no_fields @ |
1003 |
err_dup_fields @ err_bad_fields @ err_dup_sorts; |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1004 |
in |
4890 | 1005 |
if null errs then () else error (cat_lines errs); |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1006 |
thy |> record_definition (args, bname) parent parents bfields |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1007 |
end |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1008 |
handle ERROR => error ("Failed to define record " ^ quote bname); |
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1009 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1010 |
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
|
1011 |
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
|
1012 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1013 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1014 |
|
6358 | 1015 |
(** package setup **) |
1016 |
||
1017 |
(* setup theory *) |
|
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1018 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1019 |
val setup = |
5006 | 1020 |
[RecordsData.init, |
11490
f9ae28f55178
field_name_ast_tr superceded by constify_ast_tr in Pure;
wenzelm
parents:
11473
diff
changeset
|
1021 |
Theory.add_trfuns ([], parse_translation, [], []), |
6358 | 1022 |
Method.add_methods [record_split_method], |
7178 | 1023 |
Simplifier.change_simpset_of Simplifier.addsimprocs [record_simproc]]; |
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1024 |
|
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1025 |
|
6358 | 1026 |
(* outer syntax *) |
1027 |
||
6723 | 1028 |
local structure P = OuterParse and K = OuterSyntax.Keyword in |
6358 | 1029 |
|
1030 |
val record_decl = |
|
6723 | 1031 |
P.type_args -- P.name -- (P.$$$ "=" |-- Scan.option (P.typ --| P.$$$ "+") |
6729 | 1032 |
-- Scan.repeat1 (P.name -- (P.$$$ "::" |-- P.typ) --| P.marg_comment)); |
6358 | 1033 |
|
1034 |
val recordP = |
|
6723 | 1035 |
OuterSyntax.command "record" "define extensible record" K.thy_decl |
6519 | 1036 |
(record_decl >> (fn (x, (y, z)) => Toplevel.theory (#1 o add_record x y z))); |
6358 | 1037 |
|
1038 |
val _ = OuterSyntax.add_parsers [recordP]; |
|
1039 |
||
4867
9be2bf0ce909
package extensible records with structural subtyping in HOL -- still
wenzelm
parents:
diff
changeset
|
1040 |
end; |
5698 | 1041 |
|
6384 | 1042 |
end; |
1043 |
||
5698 | 1044 |
structure BasicRecordPackage: BASIC_RECORD_PACKAGE = RecordPackage; |
1045 |
open BasicRecordPackage; |