src/Pure/Tools/find_theorems.ML
 author haftmann Wed Oct 21 08:16:25 2009 +0200 (2009-10-21) changeset 33039 5018f6a76b3f parent 33036 c61fe520602b parent 33038 8f9594c31de4 child 33095 bbd52d2f8696 permissions -rw-r--r--
merged
 wenzelm@30143 ` 1` ```(* Title: Pure/Tools/find_theorems.ML ``` wenzelm@26283 ` 2` ``` Author: Rafal Kolanski and Gerwin Klein, NICTA ``` wenzelm@16033 ` 3` wenzelm@16033 ` 4` ```Retrieve theorems from proof context. ``` wenzelm@16033 ` 5` ```*) ``` wenzelm@16033 ` 6` wenzelm@16033 ` 7` ```signature FIND_THEOREMS = ``` wenzelm@16033 ` 8` ```sig ``` wenzelm@16036 ` 9` ``` datatype 'term criterion = ``` Timothy@31042 ` 10` ``` Name of string | Intro | IntroIff | Elim | Dest | Solves | Simp of 'term | ``` kleing@29857 ` 11` ``` Pattern of 'term ``` wenzelm@32738 ` 12` ``` val tac_limit: int Unsynchronized.ref ``` wenzelm@32738 ` 13` ``` val limit: int Unsynchronized.ref ``` Timothy@30785 ` 14` ``` val find_theorems: Proof.context -> thm option -> int option -> bool -> ``` Timothy@30785 ` 15` ``` (bool * string criterion) list -> int option * (Facts.ref * thm) list ``` wenzelm@30186 ` 16` ``` val pretty_thm: Proof.context -> Facts.ref * thm -> Pretty.T ``` kleing@29857 ` 17` ``` val print_theorems: Proof.context -> thm option -> int option -> bool -> ``` wenzelm@16036 ` 18` ``` (bool * string criterion) list -> unit ``` wenzelm@16033 ` 19` ```end; ``` wenzelm@16033 ` 20` wenzelm@16033 ` 21` ```structure FindTheorems: FIND_THEOREMS = ``` wenzelm@16033 ` 22` ```struct ``` wenzelm@16033 ` 23` wenzelm@16033 ` 24` ```(** search criteria **) ``` wenzelm@16033 ` 25` wenzelm@16036 ` 26` ```datatype 'term criterion = ``` Timothy@31042 ` 27` ``` Name of string | Intro | IntroIff | Elim | Dest | Solves | Simp of 'term | ``` kleing@29857 ` 28` ``` Pattern of 'term; ``` wenzelm@16036 ` 29` kleing@33036 ` 30` ```fun apply_dummies tm = ``` kleing@33036 ` 31` ``` strip_abs tm ``` kleing@33036 ` 32` ``` |> fst ``` kleing@33036 ` 33` ``` |> map (Term.dummy_pattern o snd) ``` kleing@33036 ` 34` ``` |> betapplys o pair tm ``` kleing@33036 ` 35` ``` |> (fn x => Term.replace_dummy_patterns x 1) ``` kleing@33036 ` 36` ``` |> fst; ``` kleing@33036 ` 37` kleing@33036 ` 38` ```fun parse_pattern ctxt nm = ``` kleing@33036 ` 39` ``` let ``` kleing@33036 ` 40` ``` val nm' = case Syntax.parse_term ctxt nm of Const (n, _) => n | _ => nm; ``` kleing@33036 ` 41` ``` val consts = ProofContext.consts_of ctxt; ``` kleing@33036 ` 42` ``` in ``` kleing@33036 ` 43` ``` nm' ``` kleing@33036 ` 44` ``` |> Consts.intern consts ``` kleing@33036 ` 45` ``` |> Consts.the_abbreviation consts ``` kleing@33036 ` 46` ``` |> snd ``` kleing@33036 ` 47` ``` |> apply_dummies ``` kleing@33036 ` 48` ``` handle TYPE _ => ProofContext.read_term_pattern ctxt nm ``` kleing@33036 ` 49` ``` end; ``` kleing@33036 ` 50` wenzelm@16036 ` 51` ```fun read_criterion _ (Name name) = Name name ``` wenzelm@16036 ` 52` ``` | read_criterion _ Intro = Intro ``` Timothy@31042 ` 53` ``` | read_criterion _ IntroIff = IntroIff ``` wenzelm@16036 ` 54` ``` | read_criterion _ Elim = Elim ``` wenzelm@16036 ` 55` ``` | read_criterion _ Dest = Dest ``` kleing@29857 ` 56` ``` | read_criterion _ Solves = Solves ``` wenzelm@24683 ` 57` ``` | read_criterion ctxt (Simp str) = Simp (ProofContext.read_term_pattern ctxt str) ``` kleing@33036 ` 58` ``` | read_criterion ctxt (Pattern str) = Pattern (parse_pattern ctxt str); ``` wenzelm@16033 ` 59` wenzelm@16036 ` 60` ```fun pretty_criterion ctxt (b, c) = ``` wenzelm@16036 ` 61` ``` let ``` wenzelm@16036 ` 62` ``` fun prfx s = if b then s else "-" ^ s; ``` wenzelm@16036 ` 63` ``` in ``` wenzelm@16036 ` 64` ``` (case c of ``` wenzelm@16036 ` 65` ``` Name name => Pretty.str (prfx "name: " ^ quote name) ``` wenzelm@16036 ` 66` ``` | Intro => Pretty.str (prfx "intro") ``` Timothy@31042 ` 67` ``` | IntroIff => Pretty.str (prfx "introiff") ``` wenzelm@16036 ` 68` ``` | Elim => Pretty.str (prfx "elim") ``` wenzelm@16036 ` 69` ``` | Dest => Pretty.str (prfx "dest") ``` kleing@29857 ` 70` ``` | Solves => Pretty.str (prfx "solves") ``` kleing@16088 ` 71` ``` | Simp pat => Pretty.block [Pretty.str (prfx "simp:"), Pretty.brk 1, ``` wenzelm@24920 ` 72` ``` Pretty.quote (Syntax.pretty_term ctxt (Term.show_dummy_patterns pat))] ``` wenzelm@16036 ` 73` ``` | Pattern pat => Pretty.enclose (prfx " \"") "\"" ``` wenzelm@24920 ` 74` ``` [Syntax.pretty_term ctxt (Term.show_dummy_patterns pat)]) ``` wenzelm@16036 ` 75` ``` end; ``` wenzelm@16033 ` 76` wenzelm@30142 ` 77` wenzelm@30142 ` 78` wenzelm@16033 ` 79` ```(** search criterion filters **) ``` wenzelm@16033 ` 80` kleing@16895 ` 81` ```(*generated filters are to be of the form ``` wenzelm@26336 ` 82` ``` input: (Facts.ref * thm) ``` wenzelm@17106 ` 83` ``` output: (p:int, s:int) option, where ``` kleing@16895 ` 84` ``` NONE indicates no match ``` wenzelm@17106 ` 85` ``` p is the primary sorting criterion ``` kleing@16895 ` 86` ``` (eg. number of assumptions in the theorem) ``` kleing@16895 ` 87` ``` s is the secondary sorting criterion ``` kleing@16895 ` 88` ``` (eg. size of the substitution for intro, elim and dest) ``` kleing@16895 ` 89` ``` when applying a set of filters to a thm, fold results in: ``` kleing@16895 ` 90` ``` (biggest p, sum of all s) ``` wenzelm@17106 ` 91` ``` currently p and s only matter for intro, elim, dest and simp filters, ``` wenzelm@17106 ` 92` ``` otherwise the default ordering is used. ``` kleing@16895 ` 93` ```*) ``` kleing@16895 ` 94` kleing@16088 ` 95` kleing@16088 ` 96` ```(* matching theorems *) ``` wenzelm@17106 ` 97` wenzelm@17205 ` 98` ```fun is_nontrivial thy = Term.is_Const o Term.head_of o ObjectLogic.drop_judgment thy; ``` kleing@16088 ` 99` wenzelm@32798 ` 100` ```(*educated guesses on HOL*) (* FIXME broken *) ``` wenzelm@32798 ` 101` ```val boolT = Type ("bool", []); ``` wenzelm@32798 ` 102` ```val iff_const = Const ("op =", boolT --> boolT --> boolT); ``` Timothy@31042 ` 103` kleing@16964 ` 104` ```(*extract terms from term_src, refine them to the parts that concern us, ``` kleing@16964 ` 105` ``` if po try match them against obj else vice versa. ``` kleing@16964 ` 106` ``` trivial matches are ignored. ``` kleing@16964 ` 107` ``` returns: smallest substitution size*) ``` Timothy@31042 ` 108` ```fun is_matching_thm doiff (extract_terms, refine_term) ctxt po obj term_src = ``` kleing@16088 ` 109` ``` let ``` wenzelm@17106 ` 110` ``` val thy = ProofContext.theory_of ctxt; ``` kleing@16088 ` 111` wenzelm@32798 ` 112` ``` fun check_match pat = Pattern.matches thy (if po then (pat, obj) else (obj, pat)); ``` wenzelm@16486 ` 113` ``` fun matches pat = ``` Timothy@31042 ` 114` ``` let ``` Timothy@31042 ` 115` ``` val jpat = ObjectLogic.drop_judgment thy pat; ``` Timothy@31042 ` 116` ``` val c = Term.head_of jpat; ``` Timothy@31042 ` 117` ``` val pats = ``` Timothy@31042 ` 118` ``` if Term.is_Const c ``` wenzelm@32798 ` 119` ``` then ``` wenzelm@32798 ` 120` ``` if doiff andalso c = iff_const then ``` wenzelm@32798 ` 121` ``` (pat :: map (ObjectLogic.ensure_propT thy) (snd (strip_comb jpat))) ``` wenzelm@32798 ` 122` ``` |> filter (is_nontrivial thy) ``` wenzelm@32798 ` 123` ``` else [pat] ``` Timothy@31042 ` 124` ``` else []; ``` wenzelm@32798 ` 125` ``` in filter check_match pats end; ``` kleing@16895 ` 126` kleing@16895 ` 127` ``` fun substsize pat = ``` wenzelm@18184 ` 128` ``` let val (_, subst) = ``` wenzelm@18184 ` 129` ``` Pattern.match thy (if po then (pat, obj) else (obj, pat)) (Vartab.empty, Vartab.empty) ``` wenzelm@17205 ` 130` ``` in Vartab.fold (fn (_, (_, t)) => fn n => size_of_term t + n) subst 0 end; ``` kleing@16088 ` 131` kleing@16895 ` 132` ``` fun bestmatch [] = NONE ``` wenzelm@33029 ` 133` ``` | bestmatch xs = SOME (foldl1 Int.min xs); ``` kleing@16895 ` 134` kleing@16964 ` 135` ``` val match_thm = matches o refine_term; ``` wenzelm@16486 ` 136` ``` in ``` wenzelm@32798 ` 137` ``` maps match_thm (extract_terms term_src) ``` Timothy@31042 ` 138` ``` |> map substsize ``` wenzelm@26283 ` 139` ``` |> bestmatch ``` kleing@16088 ` 140` ``` end; ``` kleing@16088 ` 141` kleing@16088 ` 142` wenzelm@16033 ` 143` ```(* filter_name *) ``` wenzelm@16033 ` 144` wenzelm@17106 ` 145` ```fun filter_name str_pat (thmref, _) = ``` wenzelm@26336 ` 146` ``` if match_string str_pat (Facts.name_of_ref thmref) ``` wenzelm@17205 ` 147` ``` then SOME (0, 0) else NONE; ``` wenzelm@16033 ` 148` wenzelm@30142 ` 149` kleing@29857 ` 150` ```(* filter intro/elim/dest/solves rules *) ``` wenzelm@16033 ` 151` wenzelm@17205 ` 152` ```fun filter_dest ctxt goal (_, thm) = ``` wenzelm@16033 ` 153` ``` let ``` kleing@16964 ` 154` ``` val extract_dest = ``` wenzelm@17205 ` 155` ``` (fn thm => if Thm.no_prems thm then [] else [Thm.full_prop_of thm], ``` wenzelm@16033 ` 156` ``` hd o Logic.strip_imp_prems); ``` wenzelm@16033 ` 157` ``` val prems = Logic.prems_of_goal goal 1; ``` kleing@16895 ` 158` Timothy@31042 ` 159` ``` fun try_subst prem = is_matching_thm false extract_dest ctxt true prem thm; ``` wenzelm@19482 ` 160` ``` val successful = prems |> map_filter try_subst; ``` wenzelm@16033 ` 161` ``` in ``` kleing@16895 ` 162` ``` (*if possible, keep best substitution (one with smallest size)*) ``` wenzelm@17106 ` 163` ``` (*dest rules always have assumptions, so a dest with one ``` kleing@16895 ` 164` ``` assumption is as good as an intro rule with none*) ``` wenzelm@17205 ` 165` ``` if not (null successful) ``` wenzelm@33029 ` 166` ``` then SOME (Thm.nprems_of thm - 1, foldl1 Int.min successful) else NONE ``` wenzelm@16033 ` 167` ``` end; ``` wenzelm@16033 ` 168` Timothy@31042 ` 169` ```fun filter_intro doiff ctxt goal (_, thm) = ``` wenzelm@16033 ` 170` ``` let ``` wenzelm@17205 ` 171` ``` val extract_intro = (single o Thm.full_prop_of, Logic.strip_imp_concl); ``` wenzelm@16036 ` 172` ``` val concl = Logic.concl_of_goal goal 1; ``` Timothy@31042 ` 173` ``` val ss = is_matching_thm doiff extract_intro ctxt true concl thm; ``` wenzelm@16033 ` 174` ``` in ``` wenzelm@18939 ` 175` ``` if is_some ss then SOME (Thm.nprems_of thm, the ss) else NONE ``` wenzelm@16033 ` 176` ``` end; ``` wenzelm@16033 ` 177` wenzelm@17205 ` 178` ```fun filter_elim ctxt goal (_, thm) = ``` kleing@16964 ` 179` ``` if not (Thm.no_prems thm) then ``` kleing@16964 ` 180` ``` let ``` wenzelm@17205 ` 181` ``` val rule = Thm.full_prop_of thm; ``` kleing@16964 ` 182` ``` val prems = Logic.prems_of_goal goal 1; ``` kleing@16964 ` 183` ``` val goal_concl = Logic.concl_of_goal goal 1; ``` wenzelm@26283 ` 184` ``` val rule_mp = hd (Logic.strip_imp_prems rule); ``` kleing@16964 ` 185` ``` val rule_concl = Logic.strip_imp_concl rule; ``` wenzelm@26283 ` 186` ``` fun combine t1 t2 = Const ("*combine*", dummyT --> dummyT) \$ (t1 \$ t2); ``` kleing@16964 ` 187` ``` val rule_tree = combine rule_mp rule_concl; ``` wenzelm@26283 ` 188` ``` fun goal_tree prem = combine prem goal_concl; ``` wenzelm@17106 ` 189` ``` fun try_subst prem = ``` Timothy@31042 ` 190` ``` is_matching_thm false (single, I) ctxt true (goal_tree prem) rule_tree; ``` wenzelm@19482 ` 191` ``` val successful = prems |> map_filter try_subst; ``` kleing@16964 ` 192` ``` in ``` wenzelm@32798 ` 193` ``` (*elim rules always have assumptions, so an elim with one ``` wenzelm@32798 ` 194` ``` assumption is as good as an intro rule with none*) ``` wenzelm@17106 ` 195` ``` if is_nontrivial (ProofContext.theory_of ctxt) (Thm.major_prem_of thm) ``` wenzelm@17205 ` 196` ``` andalso not (null successful) ``` wenzelm@33029 ` 197` ``` then SOME (Thm.nprems_of thm - 1, foldl1 Int.min successful) else NONE ``` kleing@16964 ` 198` ``` end ``` kleing@16964 ` 199` ``` else NONE ``` wenzelm@16036 ` 200` wenzelm@32738 ` 201` ```val tac_limit = Unsynchronized.ref 5; ``` kleing@29857 ` 202` wenzelm@30143 ` 203` ```fun filter_solves ctxt goal = ``` wenzelm@30143 ` 204` ``` let ``` wenzelm@30143 ` 205` ``` fun etacn thm i = Seq.take (! tac_limit) o etac thm i; ``` wenzelm@30143 ` 206` ``` fun try_thm thm = ``` wenzelm@30143 ` 207` ``` if Thm.no_prems thm then rtac thm 1 goal ``` wenzelm@30318 ` 208` ``` else (etacn thm THEN_ALL_NEW (Goal.norm_hhf_tac THEN' Method.assm_tac ctxt)) 1 goal; ``` kleing@29857 ` 209` ``` in ``` wenzelm@30143 ` 210` ``` fn (_, thm) => ``` wenzelm@32798 ` 211` ``` if is_some (Seq.pull (try_thm thm)) ``` wenzelm@30143 ` 212` ``` then SOME (Thm.nprems_of thm, 0) else NONE ``` kleing@29857 ` 213` ``` end; ``` wenzelm@16033 ` 214` wenzelm@30142 ` 215` kleing@16074 ` 216` ```(* filter_simp *) ``` wenzelm@16033 ` 217` wenzelm@17205 ` 218` ```fun filter_simp ctxt t (_, thm) = ``` wenzelm@16033 ` 219` ``` let ``` wenzelm@32149 ` 220` ``` val mksimps = Simplifier.mksimps (simpset_of ctxt); ``` wenzelm@17106 ` 221` ``` val extract_simp = ``` wenzelm@30318 ` 222` ``` (map Thm.full_prop_of o mksimps, #1 o Logic.dest_equals o Logic.strip_imp_concl); ``` Timothy@31042 ` 223` ``` val ss = is_matching_thm false extract_simp ctxt false t thm; ``` wenzelm@17106 ` 224` ``` in ``` wenzelm@18939 ` 225` ``` if is_some ss then SOME (Thm.nprems_of thm, the ss) else NONE ``` kleing@16964 ` 226` ``` end; ``` wenzelm@16033 ` 227` wenzelm@16033 ` 228` wenzelm@16033 ` 229` ```(* filter_pattern *) ``` wenzelm@16033 ` 230` wenzelm@32798 ` 231` ```fun get_names t = Term.add_const_names t (Term.add_free_names t []); ``` kleing@29857 ` 232` ```fun get_thm_names (_, thm) = get_names (Thm.full_prop_of thm); ``` kleing@28900 ` 233` wenzelm@30143 ` 234` ```(*Including all constants and frees is only sound because ``` wenzelm@30143 ` 235` ``` matching uses higher-order patterns. If full matching ``` wenzelm@30143 ` 236` ``` were used, then constants that may be subject to ``` wenzelm@30143 ` 237` ``` beta-reduction after substitution of frees should ``` wenzelm@30143 ` 238` ``` not be included for LHS set because they could be ``` wenzelm@30143 ` 239` ``` thrown away by the substituted function. ``` wenzelm@30143 ` 240` ``` e.g. for (?F 1 2) do not include 1 or 2, if it were ``` wenzelm@30143 ` 241` ``` possible for ?F to be (% x y. 3) ``` wenzelm@30143 ` 242` ``` The largest possible set should always be included on ``` wenzelm@30143 ` 243` ``` the RHS.*) ``` wenzelm@30143 ` 244` wenzelm@30143 ` 245` ```fun filter_pattern ctxt pat = ``` wenzelm@30143 ` 246` ``` let ``` kleing@29857 ` 247` ``` val pat_consts = get_names pat; ``` kleing@28900 ` 248` kleing@29857 ` 249` ``` fun check (t, NONE) = check (t, SOME (get_thm_names t)) ``` kleing@28900 ` 250` ``` | check ((_, thm), c as SOME thm_consts) = ``` haftmann@33038 ` 251` ``` (if subset (op =) (pat_consts, thm_consts) andalso ``` wenzelm@32798 ` 252` ``` Pattern.matches_subterm (ProofContext.theory_of ctxt) (pat, Thm.full_prop_of thm) ``` wenzelm@32798 ` 253` ``` then SOME (0, 0) else NONE, c); ``` kleing@28900 ` 254` ``` in check end; ``` wenzelm@16033 ` 255` wenzelm@30142 ` 256` wenzelm@16033 ` 257` ```(* interpret criteria as filters *) ``` wenzelm@16033 ` 258` wenzelm@16036 ` 259` ```local ``` wenzelm@16036 ` 260` wenzelm@16036 ` 261` ```fun err_no_goal c = ``` wenzelm@16036 ` 262` ``` error ("Current goal required for " ^ c ^ " search criterion"); ``` wenzelm@16036 ` 263` kleing@29857 ` 264` ```val fix_goal = Thm.prop_of; ``` kleing@29857 ` 265` kleing@28900 ` 266` ```fun filter_crit _ _ (Name name) = apfst (filter_name name) ``` wenzelm@16036 ` 267` ``` | filter_crit _ NONE Intro = err_no_goal "intro" ``` wenzelm@16036 ` 268` ``` | filter_crit _ NONE Elim = err_no_goal "elim" ``` wenzelm@16036 ` 269` ``` | filter_crit _ NONE Dest = err_no_goal "dest" ``` kleing@29857 ` 270` ``` | filter_crit _ NONE Solves = err_no_goal "solves" ``` Timothy@31042 ` 271` ``` | filter_crit ctxt (SOME goal) Intro = apfst (filter_intro false ctxt (fix_goal goal)) ``` Timothy@31042 ` 272` ``` | filter_crit ctxt (SOME goal) IntroIff = apfst (filter_intro true ctxt (fix_goal goal)) ``` wenzelm@30143 ` 273` ``` | filter_crit ctxt (SOME goal) Elim = apfst (filter_elim ctxt (fix_goal goal)) ``` wenzelm@30143 ` 274` ``` | filter_crit ctxt (SOME goal) Dest = apfst (filter_dest ctxt (fix_goal goal)) ``` kleing@29857 ` 275` ``` | filter_crit ctxt (SOME goal) Solves = apfst (filter_solves ctxt goal) ``` kleing@28900 ` 276` ``` | filter_crit ctxt _ (Simp pat) = apfst (filter_simp ctxt pat) ``` kleing@16088 ` 277` ``` | filter_crit ctxt _ (Pattern pat) = filter_pattern ctxt pat; ``` wenzelm@16036 ` 278` wenzelm@19502 ` 279` ```fun opt_not x = if is_some x then NONE else SOME (0, 0); ``` kleing@16895 ` 280` wenzelm@17756 ` 281` ```fun opt_add (SOME (a, x)) (SOME (b, y)) = SOME (Int.max (a, b), x + y : int) ``` wenzelm@26283 ` 282` ``` | opt_add _ _ = NONE; ``` kleing@16895 ` 283` wenzelm@30143 ` 284` ```fun app_filters thm = ``` wenzelm@30143 ` 285` ``` let ``` kleing@28900 ` 286` ``` fun app (NONE, _, _) = NONE ``` wenzelm@32798 ` 287` ``` | app (SOME v, _, []) = SOME (v, thm) ``` wenzelm@30143 ` 288` ``` | app (r, consts, f :: fs) = ``` wenzelm@30143 ` 289` ``` let val (r', consts') = f (thm, consts) ``` wenzelm@30143 ` 290` ``` in app (opt_add r r', consts', fs) end; ``` kleing@28900 ` 291` ``` in app end; ``` kleing@28900 ` 292` wenzelm@31684 ` 293` wenzelm@16036 ` 294` ```in ``` wenzelm@16033 ` 295` wenzelm@16033 ` 296` ```fun filter_criterion ctxt opt_goal (b, c) = ``` kleing@28900 ` 297` ``` (if b then I else (apfst opt_not)) o filter_crit ctxt opt_goal c; ``` kleing@16895 ` 298` Timothy@30785 ` 299` ```fun sorted_filter filters thms = ``` kleing@16895 ` 300` ``` let ``` kleing@28900 ` 301` ``` fun eval_filters thm = app_filters thm (SOME (0, 0), NONE, filters); ``` wenzelm@16033 ` 302` kleing@16895 ` 303` ``` (*filters return: (number of assumptions, substitution size) option, so ``` kleing@16964 ` 304` ``` sort (desc. in both cases) according to number of assumptions first, ``` kleing@16895 ` 305` ``` then by the substitution size*) ``` wenzelm@17205 ` 306` ``` fun thm_ord (((p0, s0), _), ((p1, s1), _)) = ``` wenzelm@17205 ` 307` ``` prod_ord int_ord int_ord ((p1, s1), (p0, s0)); ``` kleing@28900 ` 308` ``` in map_filter eval_filters thms |> sort thm_ord |> map #2 end; ``` wenzelm@16033 ` 309` wenzelm@30822 ` 310` ```fun lazy_filter filters = ``` wenzelm@30822 ` 311` ``` let ``` Timothy@30785 ` 312` ``` fun lazy_match thms = Seq.make (fn () => first_match thms) ``` Timothy@30785 ` 313` Timothy@30785 ` 314` ``` and first_match [] = NONE ``` wenzelm@30822 ` 315` ``` | first_match (thm :: thms) = ``` wenzelm@30822 ` 316` ``` (case app_filters thm (SOME (0, 0), NONE, filters) of ``` Timothy@30785 ` 317` ``` NONE => first_match thms ``` wenzelm@30822 ` 318` ``` | SOME (_, t) => SOME (t, lazy_match thms)); ``` Timothy@30785 ` 319` ``` in lazy_match end; ``` wenzelm@30822 ` 320` wenzelm@16036 ` 321` ```end; ``` wenzelm@16036 ` 322` wenzelm@16033 ` 323` kleing@22414 ` 324` ```(* removing duplicates, preferring nicer names, roughly n log n *) ``` kleing@22340 ` 325` wenzelm@25226 ` 326` ```local ``` wenzelm@25226 ` 327` huffman@27486 ` 328` ```val index_ord = option_ord (K EQUAL); ``` wenzelm@25226 ` 329` ```val hidden_ord = bool_ord o pairself NameSpace.is_hidden; ``` wenzelm@30364 ` 330` ```val qual_ord = int_ord o pairself (length o Long_Name.explode); ``` wenzelm@25226 ` 331` ```val txt_ord = int_ord o pairself size; ``` wenzelm@25226 ` 332` huffman@27486 ` 333` ```fun nicer_name (x, i) (y, j) = ``` huffman@27486 ` 334` ``` (case hidden_ord (x, y) of EQUAL => ``` huffman@27486 ` 335` ``` (case index_ord (i, j) of EQUAL => ``` huffman@27486 ` 336` ``` (case qual_ord (x, y) of EQUAL => txt_ord (x, y) | ord => ord) ``` huffman@27486 ` 337` ``` | ord => ord) ``` wenzelm@25226 ` 338` ``` | ord => ord) <> GREATER; ``` wenzelm@25226 ` 339` Timothy@29848 ` 340` ```fun rem_cdups nicer xs = ``` wenzelm@26336 ` 341` ``` let ``` wenzelm@26336 ` 342` ``` fun rem_c rev_seen [] = rev rev_seen ``` wenzelm@26336 ` 343` ``` | rem_c rev_seen [x] = rem_c (x :: rev_seen) [] ``` wenzelm@26336 ` 344` ``` | rem_c rev_seen ((x as ((n, t), _)) :: (y as ((n', t'), _)) :: xs) = ``` wenzelm@30822 ` 345` ``` if Thm.eq_thm_prop (t, t') ``` wenzelm@30822 ` 346` ``` then rem_c rev_seen ((if nicer n n' then x else y) :: xs) ``` wenzelm@30822 ` 347` ``` else rem_c (x :: rev_seen) (y :: xs) ``` wenzelm@26336 ` 348` ``` in rem_c [] xs end; ``` wenzelm@25226 ` 349` wenzelm@26336 ` 350` ```in ``` wenzelm@25226 ` 351` wenzelm@30143 ` 352` ```fun nicer_shortest ctxt = ``` wenzelm@30143 ` 353` ``` let ``` wenzelm@30216 ` 354` ``` (* FIXME global name space!? *) ``` wenzelm@30216 ` 355` ``` val space = Facts.space_of (PureThy.facts_of (ProofContext.theory_of ctxt)); ``` Timothy@29848 ` 356` wenzelm@30216 ` 357` ``` val shorten = ``` wenzelm@30216 ` 358` ``` NameSpace.extern_flags {long_names = false, short_names = false, unique_names = false} space; ``` Timothy@29848 ` 359` Timothy@29848 ` 360` ``` fun nicer (Facts.Named ((x, _), i)) (Facts.Named ((y, _), j)) = ``` Timothy@29848 ` 361` ``` nicer_name (shorten x, i) (shorten y, j) ``` Timothy@29848 ` 362` ``` | nicer (Facts.Fact _) (Facts.Named _) = true ``` Timothy@29848 ` 363` ``` | nicer (Facts.Named _) (Facts.Fact _) = false; ``` Timothy@29848 ` 364` ``` in nicer end; ``` Timothy@29848 ` 365` Timothy@29848 ` 366` ```fun rem_thm_dups nicer xs = ``` wenzelm@26336 ` 367` ``` xs ~~ (1 upto length xs) ``` wenzelm@29269 ` 368` ``` |> sort (TermOrd.fast_term_ord o pairself (Thm.prop_of o #2 o #1)) ``` Timothy@29848 ` 369` ``` |> rem_cdups nicer ``` wenzelm@26336 ` 370` ``` |> sort (int_ord o pairself #2) ``` wenzelm@26336 ` 371` ``` |> map #1; ``` kleing@22340 ` 372` wenzelm@26336 ` 373` ```end; ``` kleing@22340 ` 374` kleing@22340 ` 375` wenzelm@16033 ` 376` ```(* print_theorems *) ``` wenzelm@16033 ` 377` wenzelm@26283 ` 378` ```fun all_facts_of ctxt = ``` wenzelm@26336 ` 379` ``` maps Facts.selections ``` wenzelm@27173 ` 380` ``` (Facts.dest_static [] (PureThy.facts_of (ProofContext.theory_of ctxt)) @ ``` wenzelm@27173 ` 381` ``` Facts.dest_static [] (ProofContext.facts_of ctxt)); ``` wenzelm@17972 ` 382` wenzelm@32738 ` 383` ```val limit = Unsynchronized.ref 40; ``` wenzelm@25992 ` 384` Timothy@30785 ` 385` ```fun find_theorems ctxt opt_goal opt_limit rem_dups raw_criteria = ``` wenzelm@16033 ` 386` ``` let ``` wenzelm@30822 ` 387` ``` val assms = ``` wenzelm@30822 ` 388` ``` ProofContext.get_fact ctxt (Facts.named "local.assms") ``` wenzelm@30822 ` 389` ``` handle ERROR _ => []; ``` wenzelm@30822 ` 390` ``` val add_prems = Seq.hd o TRY (Method.insert_tac assms 1); ``` kleing@29857 ` 391` ``` val opt_goal' = Option.map add_prems opt_goal; ``` kleing@29857 ` 392` wenzelm@16036 ` 393` ``` val criteria = map (apsnd (read_criterion ctxt)) raw_criteria; ``` kleing@29857 ` 394` ``` val filters = map (filter_criterion ctxt opt_goal') criteria; ``` wenzelm@16033 ` 395` Timothy@30785 ` 396` ``` fun find_all facts = ``` Timothy@30785 ` 397` ``` let ``` Timothy@30785 ` 398` ``` val raw_matches = sorted_filter filters facts; ``` Timothy@30785 ` 399` Timothy@30785 ` 400` ``` val matches = ``` Timothy@30785 ` 401` ``` if rem_dups ``` Timothy@30785 ` 402` ``` then rem_thm_dups (nicer_shortest ctxt) raw_matches ``` Timothy@30785 ` 403` ``` else raw_matches; ``` kleing@28900 ` 404` Timothy@30785 ` 405` ``` val len = length matches; ``` Timothy@30785 ` 406` ``` val lim = the_default (! limit) opt_limit; ``` Timothy@30785 ` 407` ``` in (SOME len, Library.drop (len - lim, matches)) end; ``` Timothy@30785 ` 408` Timothy@30785 ` 409` ``` val find = ``` Timothy@30785 ` 410` ``` if rem_dups orelse is_none opt_limit ``` Timothy@30785 ` 411` ``` then find_all ``` wenzelm@30822 ` 412` ``` else pair NONE o Seq.list_of o Seq.take (the opt_limit) o lazy_filter filters; ``` Timothy@30785 ` 413` Timothy@30785 ` 414` ``` in find (all_facts_of ctxt) end; ``` kleing@29857 ` 415` wenzelm@30186 ` 416` wenzelm@30186 ` 417` ```fun pretty_thm ctxt (thmref, thm) = Pretty.block ``` wenzelm@30186 ` 418` ``` [Pretty.str (Facts.string_of_ref thmref), Pretty.str ":", Pretty.brk 1, ``` wenzelm@32091 ` 419` ``` Display.pretty_thm ctxt thm]; ``` wenzelm@30186 ` 420` wenzelm@30143 ` 421` ```fun print_theorems ctxt opt_goal opt_limit rem_dups raw_criteria = ``` wenzelm@30143 ` 422` ``` let ``` kleing@29857 ` 423` ``` val start = start_timing (); ``` kleing@29857 ` 424` kleing@29857 ` 425` ``` val criteria = map (apsnd (read_criterion ctxt)) raw_criteria; ``` Timothy@30785 ` 426` ``` val (foundo, thms) = find_theorems ctxt opt_goal opt_limit rem_dups raw_criteria; ``` Timothy@30785 ` 427` ``` val returned = length thms; ``` wenzelm@31684 ` 428` Timothy@30785 ` 429` ``` val tally_msg = ``` wenzelm@30822 ` 430` ``` (case foundo of ``` Timothy@30785 ` 431` ``` NONE => "displaying " ^ string_of_int returned ^ " theorems" ``` wenzelm@30822 ` 432` ``` | SOME found => ``` wenzelm@30822 ` 433` ``` "found " ^ string_of_int found ^ " theorems" ^ ``` wenzelm@30822 ` 434` ``` (if returned < found ``` wenzelm@30822 ` 435` ``` then " (" ^ string_of_int returned ^ " displayed)" ``` wenzelm@30822 ` 436` ``` else "")); ``` wenzelm@16033 ` 437` wenzelm@31687 ` 438` ``` val end_msg = " in " ^ Time.toString (#cpu (end_timing start)) ^ " secs"; ``` wenzelm@16033 ` 439` ``` in ``` kleing@28900 ` 440` ``` Pretty.big_list "searched for:" (map (pretty_criterion ctxt) criteria) ``` kleing@29857 ` 441` ``` :: Pretty.str "" :: ``` kleing@28900 ` 442` ``` (if null thms then [Pretty.str ("nothing found" ^ end_msg)] ``` wenzelm@16033 ` 443` ``` else ``` Timothy@30785 ` 444` ``` [Pretty.str (tally_msg ^ end_msg ^ ":"), Pretty.str ""] @ ``` wenzelm@30186 ` 445` ``` map (pretty_thm ctxt) thms) ``` wenzelm@16033 ` 446` ``` |> Pretty.chunks |> Pretty.writeln ``` wenzelm@30142 ` 447` ``` end; ``` wenzelm@30142 ` 448` wenzelm@30142 ` 449` wenzelm@32798 ` 450` wenzelm@30142 ` 451` ```(** command syntax **) ``` wenzelm@30142 ` 452` wenzelm@30142 ` 453` ```fun find_theorems_cmd ((opt_lim, rem_dups), spec) = ``` wenzelm@30142 ` 454` ``` Toplevel.unknown_theory o Toplevel.keep (fn state => ``` wenzelm@30822 ` 455` ``` let ``` wenzelm@30822 ` 456` ``` val proof_state = Toplevel.enter_proof_body state; ``` wenzelm@30822 ` 457` ``` val ctxt = Proof.context_of proof_state; ``` wenzelm@32859 ` 458` ``` val opt_goal = try Proof.flat_goal proof_state |> Option.map #2; ``` wenzelm@30822 ` 459` ``` in print_theorems ctxt opt_goal opt_lim rem_dups spec end); ``` wenzelm@30142 ` 460` wenzelm@30142 ` 461` ```local ``` wenzelm@30142 ` 462` wenzelm@30142 ` 463` ```structure P = OuterParse and K = OuterKeyword; ``` wenzelm@30142 ` 464` wenzelm@30142 ` 465` ```val criterion = ``` wenzelm@30142 ` 466` ``` P.reserved "name" |-- P.!!! (P.\$\$\$ ":" |-- P.xname) >> Name || ``` wenzelm@30142 ` 467` ``` P.reserved "intro" >> K Intro || ``` Timothy@31042 ` 468` ``` P.reserved "introiff" >> K IntroIff || ``` wenzelm@30142 ` 469` ``` P.reserved "elim" >> K Elim || ``` wenzelm@30142 ` 470` ``` P.reserved "dest" >> K Dest || ``` wenzelm@30142 ` 471` ``` P.reserved "solves" >> K Solves || ``` wenzelm@30142 ` 472` ``` P.reserved "simp" |-- P.!!! (P.\$\$\$ ":" |-- P.term) >> Simp || ``` wenzelm@30142 ` 473` ``` P.term >> Pattern; ``` wenzelm@30142 ` 474` wenzelm@30142 ` 475` ```val options = ``` wenzelm@30142 ` 476` ``` Scan.optional ``` wenzelm@30142 ` 477` ``` (P.\$\$\$ "(" |-- ``` wenzelm@30142 ` 478` ``` P.!!! (Scan.option P.nat -- Scan.optional (P.reserved "with_dups" >> K false) true ``` wenzelm@30142 ` 479` ``` --| P.\$\$\$ ")")) (NONE, true); ``` wenzelm@30142 ` 480` ```in ``` wenzelm@30142 ` 481` wenzelm@30142 ` 482` ```val _ = ``` wenzelm@30142 ` 483` ``` OuterSyntax.improper_command "find_theorems" "print theorems meeting specified criteria" K.diag ``` wenzelm@30142 ` 484` ``` (options -- Scan.repeat (((Scan.option P.minus >> is_none) -- criterion)) ``` wenzelm@30142 ` 485` ``` >> (Toplevel.no_timing oo find_theorems_cmd)); ``` wenzelm@16033 ` 486` wenzelm@16033 ` 487` ```end; ``` wenzelm@30142 ` 488` wenzelm@30142 ` 489` ```end; ```