author  wenzelm 
Thu, 11 Mar 1999 21:51:49 +0100  
changeset 6350  b5f1f861155d 
parent 6094  fd0f737b1956 
child 6367  7f36b6fd3eb3 
permissions  rwrr 
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(* Title: Pure/pure_thy.ML 
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ID: $Id$ 

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Author: Markus Wenzel, TU Muenchen 

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5091  5 
Theorem database, derived theory operations, and the ProtoPure theory. 
3987  6 
*) 
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signature BASIC_PURE_THY = 
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sig 
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val print_theorems: theory > unit 
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val print_theory: theory > unit 

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val get_thm: theory > xstring > thm 
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val get_thms: theory > xstring > thm list 
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val get_thmss: theory > xstring list > thm list 
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val thms_of: theory > (string * thm) list 
5091  16 
structure ProtoPure: 
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sig 

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val thy: theory 

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val flexpair_def: thm 

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val Goal_def: thm 

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end 

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end; 
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signature PURE_THY = 
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sig 

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include BASIC_PURE_THY 
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val thms_closure: theory > xstring > thm list option 
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val thms_containing: theory > string list > (string * thm) list 
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val default_name: string > string 
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val store_thm: (bstring * thm) * theory attribute list > theory > theory * thm 
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val smart_store_thm: (bstring * thm) > thm 
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val add_thms: ((bstring * thm) * theory attribute list) list > theory > theory 
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val add_thmss: ((bstring * thm list) * theory attribute list) list > theory > theory 

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val have_thmss: bstring > theory attribute list > 

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(thm list * theory attribute list) list > theory > theory * thm list 

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val add_axioms: ((bstring * string) * theory attribute list) list > theory > theory 
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val add_axioms_i: ((bstring * term) * theory attribute list) list > theory > theory 

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val add_axiomss: ((bstring * string list) * theory attribute list) list > theory > theory 

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val add_axiomss_i: ((bstring * term list) * theory attribute list) list > theory > theory 

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val add_defs: ((bstring * string) * theory attribute list) list > theory > theory 

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val add_defs_i: ((bstring * term) * theory attribute list) list > theory > theory 

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val add_defss: ((bstring * string list) * theory attribute list) list > theory > theory 

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val add_defss_i: ((bstring * term list) * theory attribute list) list > theory > theory 

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val get_name: theory > string 
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val put_name: string > theory > theory 
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val global_path: theory > theory 
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val local_path: theory > theory 
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val begin_theory: string > theory list > theory 
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val end_theory: theory > theory 
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exception ROLLBACK of theory * exn option 
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val transaction: (theory > theory) > theory > theory 

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val add_typedecls: (bstring * string list * mixfix) list > theory > theory 
3987  53 
end; 
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structure PureThy: PURE_THY = 

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struct 

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(*** theorem database ***) 
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(** data kind 'Pure/theorems' **) 
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structure TheoremsDataArgs = 
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struct 

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val name = "Pure/theorems"; 

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type T = 
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{space: NameSpace.T, 

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thms_tab: thm list Symtab.table, 
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const_idx: int * (int * thm) list Symtab.table} ref; 

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fun mk_empty _ = 
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ref {space = NameSpace.empty, thms_tab = Symtab.empty, const_idx = (0, Symtab.empty)} : T; 
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val empty = mk_empty (); 
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val prep_ext = mk_empty; 

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val merge = mk_empty; 

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fun print sg (ref {space, thms_tab, const_idx = _}) = 

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let 
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val prt_thm = Display.pretty_thm o Thm.transfer_sg sg; 
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fun prt_thms (name, [th]) = 
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Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt_thm th] 

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 prt_thms (name, ths) = Pretty.big_list (name ^ ":") (map prt_thm ths); 

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val thmss = sort_wrt fst (map (apfst (NameSpace.cond_extern space)) (Symtab.dest thms_tab)); 
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in 
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Pretty.writeln (Display.pretty_name_space ("theorem name space", space)); 

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Pretty.writeln (Pretty.big_list "theorems:" (map prt_thms thmss)) 

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end; 

3987  91 
end; 
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structure TheoremsData = TheoryDataFun(TheoremsDataArgs); 
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val get_theorems_sg = TheoremsData.get_sg; 

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val get_theorems = TheoremsData.get; 

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(* print theory *) 
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val print_theorems = TheoremsData.print; 
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fun print_theory thy = 
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(Display.print_theory thy; print_theorems thy); 

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(** retrieve theorems **) 
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(* thms_closure *) 
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(*note: we avoid life references to the theory, so users may safely 
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keep thms_closure with moderate space consumption*) 
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fun thms_closure_aux thy = 
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let val ref {space, thms_tab, ...} = get_theorems thy 
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in fn name => Symtab.lookup (thms_tab, NameSpace.intern space name) end; 
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fun thms_closure thy = 
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let val closures = map thms_closure_aux (thy :: Theory.ancestors_of thy) 
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in fn name => get_first (fn f => f name) closures end; 
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(* get_thms etc. *) 
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fun lookup_thms name thy = thms_closure_aux thy name; 
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fun get_thms thy name = 
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(case get_first (lookup_thms name) (thy :: Theory.ancestors_of thy) of 
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None => raise THEORY ("Unknown theorem(s) " ^ quote name, [thy]) 
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 Some thms => thms); 
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fun get_thm thy name = 
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(case get_thms thy name of 

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[thm] => thm 
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 _ => raise THEORY ("Single theorem expected " ^ quote name, [thy])); 
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fun get_thmss thy names = flat (map (get_thms thy) names); 
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(* thms_of *) 
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fun attach_name thm = (Thm.name_of_thm thm, thm); 
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fun thms_of thy = 
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let val ref {thms_tab, ...} = get_theorems thy in 
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map attach_name (flat (map snd (Symtab.dest thms_tab))) 
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end; 
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(** theorems indexed by constants **) 
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(* make index *) 
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val ignore = ["Trueprop", "all", "==>", "=="]; 
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fun add_const_idx ((next, table), thm) = 
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let 
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val {hyps, prop, ...} = Thm.rep_thm thm; 
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val consts = 
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foldr add_term_consts (hyps, add_term_consts (prop, [])) \\ ignore; 
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fun add (tab, c) = 
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Symtab.update ((c, (next, thm) :: Symtab.lookup_multi (tab, c)), tab); 
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in (next + 1, foldl add (table, consts)) end; 
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fun make_const_idx thm_tab = 
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Symtab.foldl (fn (x, (_, ths)) => foldl add_const_idx (x, ths)) ((0, Symtab.empty), thm_tab); 
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(* lookup index *) 
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(*search locally*) 
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fun containing [] thy = thms_of thy 
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 containing consts thy = 
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let 
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fun int ([], _) = [] 
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 int (_, []) = [] 

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 int (xxs as ((x as (i:int, _)) :: xs), yys as ((y as (j, _)) :: ys)) = 

179 
if i = j then x :: int (xs, ys) 

180 
else if i > j then int (xs, yys) 

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else int (xxs, ys); 

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fun ints [xs] = xs 
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 ints xss = if exists null xss then [] else foldl int (hd xss, tl xss); 

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val ref {const_idx = (_, ctab), ...} = get_theorems thy; 
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val ithmss = map (fn c => Symtab.lookup_multi (ctab, c)) consts; 
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in 
4037  189 
map (attach_name o snd) (ints ithmss) 
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end; 
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(*search globally*) 
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fun thms_containing thy consts = 
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flat (map (containing (consts \\ ignore)) (thy :: Theory.ancestors_of thy)); 
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(** store theorems **) (*DESTRUCTIVE*) 
3987  199 

4853  200 
(* naming *) 
201 

5933  202 
val defaultN = "it"; 
203 
val default_name = fn "" => defaultN  name => name; 

5907  204 

4853  205 
fun gen_names len name = 
206 
map (fn i => name ^ "_" ^ string_of_int i) (1 upto len); 

207 

5907  208 
fun name_single name x = [(default_name name, x)]; 
209 
fun name_multi name xs = gen_names (length xs) (default_name name) ~~ xs; 

4853  210 

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6091  212 
(* enter_thmx *) 
4853  213 

5933  214 
fun cond_warning name msg = if Sign.base_name name = defaultN then () else warning msg; 
215 

3987  216 
fun warn_overwrite name = 
5933  217 
cond_warning name ("Replaced old copy of theorems " ^ quote name); 
3987  218 

219 
fun warn_same name = 

5933  220 
cond_warning name ("Theorem database already contains a copy of " ^ quote name); 
3987  221 

6091  222 
fun enter_thmx sg app_name (bname, thmx) = 
3987  223 
let 
6350  224 
val name = Sign.full_name sg (default_name bname); 
6091  225 
val named_thms = map Thm.name_thm (app_name name thmx); 
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val r as ref {space, thms_tab, const_idx} = get_theorems_sg sg; 
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val overwrite = 
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(case Symtab.lookup (thms_tab, name) of 
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None => false 
6091  232 
 Some thms' => 
233 
if length thms' = length named_thms andalso forall2 Thm.eq_thm (thms', named_thms) then 

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(warn_same name; false) 
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235 
else (warn_overwrite name; true)); 
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236 

4487  237 
val space' = NameSpace.extend (space, [name]); 
6091  238 
val thms_tab' = Symtab.update ((name, named_thms), thms_tab); 
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val const_idx' = 
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240 
if overwrite then make_const_idx thms_tab' 
6091  241 
else foldl add_const_idx (const_idx, named_thms); 
3987  242 
in 
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r := {space = space', thms_tab = thms_tab', const_idx = const_idx'}; 
6091  244 
named_thms 
3987  245 
end; 
246 

4853  247 

6091  248 
(* add_thms(s) *) 
4853  249 

6091  250 
fun add_thmx app_name app_att ((bname, thmx), atts) thy = 
5280  251 
let 
6091  252 
val (thy', thmx') = app_att ((thy, thmx), atts); 
253 
val thms'' = enter_thmx (Theory.sign_of thy') app_name (bname, thmx'); 

254 
in (thy', thms'') end; 

4853  255 

6091  256 
fun add_thmxs name app = Library.apply o map (fst oo add_thmx name app); 
5907  257 

6091  258 
val add_thms = add_thmxs name_single Thm.apply_attributes; 
259 
val add_thmss = add_thmxs name_multi Thm.applys_attributes; 

5907  260 

261 

6091  262 
(* have_thmss *) 
5907  263 

6091  264 
fun have_thmss bname more_atts ths_atts thy = 
5907  265 
let 
6091  266 
fun app (x, (ths, atts)) = Thm.applys_attributes ((x, ths), atts); 
267 
val (thy', thmss') = 

5907  268 
foldl_map app (thy, map (fn (ths, atts) => (ths, atts @ more_atts)) ths_atts); 
6091  269 
val thms'' = enter_thmx (Theory.sign_of thy') name_multi (bname, flat thmss'); 
270 
in (thy, thms'') end; 

5280  271 

272 

6091  273 
(* store_thm *) 
5280  274 

6091  275 
fun store_thm th_atts thy = 
276 
let val (thy', [th']) = add_thmx name_single Thm.apply_attributes th_atts thy 

5280  277 
in (thy', th') end; 
3987  278 

279 

4853  280 
(* smart_store_thm *) 
3987  281 

4012  282 
fun smart_store_thm (name, thm) = 
6091  283 
hd (enter_thmx (Thm.sign_of_thm thm) name_single (name, thm)); 
3987  284 

285 

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(* store axioms as theorems *) 
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4853  288 
local 
289 
fun add_ax app_name add ((name, axs), atts) thy = 

290 
let 

291 
val named_axs = app_name name axs; 

292 
val thy' = add named_axs thy; 

6091  293 
val thms = map (Thm.get_axiom thy' o fst) named_axs; 
294 
in add_thmss [((name, thms), atts)] thy' end; 

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295 

5907  296 
fun add_axs app_name add = Library.apply o map (add_ax app_name add); 
4853  297 
in 
298 
val add_axioms = add_axs name_single Theory.add_axioms; 

299 
val add_axioms_i = add_axs name_single Theory.add_axioms_i; 

300 
val add_axiomss = add_axs name_multi Theory.add_axioms; 

301 
val add_axiomss_i = add_axs name_multi Theory.add_axioms_i; 

302 
val add_defs = add_axs name_single Theory.add_defs; 

303 
val add_defs_i = add_axs name_single Theory.add_defs_i; 

304 
val add_defss = add_axs name_multi Theory.add_defs; 

305 
val add_defss_i = add_axs name_multi Theory.add_defs_i; 

306 
end; 

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307 

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308 

3987  309 

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310 
(*** derived theory operations ***) 
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311 

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312 
(** theory management **) 
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313 

5005  314 
(* data kind 'Pure/theory_management' *) 
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315 

5005  316 
structure TheoryManagementDataArgs = 
317 
struct 

318 
val name = "Pure/theory_management"; 

319 
type T = {name: string, generation: int}; 

5000  320 

5005  321 
val empty = {name = "", generation = 0}; 
322 
val prep_ext = I; 

5000  323 
fun merge _ = empty; 
5005  324 
fun print _ _ = (); 
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325 
end; 
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326 

5005  327 
structure TheoryManagementData = TheoryDataFun(TheoryManagementDataArgs); 
328 
val get_info = TheoryManagementData.get; 

329 
val put_info = TheoryManagementData.put; 

330 

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331 

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332 
(* get / put name *) 
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333 

5000  334 
val get_name = #name o get_info; 
335 
fun put_name name = put_info {name = name, generation = 0}; 

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336 

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337 

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338 
(* control prefixing of theory name *) 
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339 

5210  340 
val global_path = Theory.root_path; 
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341 

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342 
fun local_path thy = 
5210  343 
thy > Theory.root_path > Theory.add_path (get_name thy); 
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344 

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345 

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346 
(* begin / end theory *) 
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347 

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348 
fun begin_theory name thys = 
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349 
Theory.prep_ext_merge thys 
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350 
> put_name name 
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351 
> local_path; 
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352 

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353 
fun end_theory thy = Theory.add_name (get_name thy) thy; 
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354 

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355 

5000  356 
(* atomic transactions *) 
357 

5091  358 
exception ROLLBACK of theory * exn option; 
359 

5000  360 
fun transaction f thy = 
361 
let 

362 
val {name, generation} = get_info thy; 

363 
val copy_thy = 

364 
thy 

365 
> Theory.prep_ext 

5005  366 
> Theory.add_name ("#" ^ name ^ ":" ^ string_of_int generation) (* FIXME !!?? *) 
5000  367 
> put_info {name = name, generation = generation + 1}; 
5026  368 
val (thy', opt_exn) = (transform_error f thy, None) handle exn => (thy, Some exn); 
5000  369 
in 
5091  370 
if Sign.is_stale (Theory.sign_of thy') then raise ROLLBACK (copy_thy, opt_exn) 
371 
else (case opt_exn of Some exn => raise exn  _ => thy') 

5000  372 
end; 
373 

374 

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375 

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376 
(** add logical types **) 
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377 

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378 
fun add_typedecls decls thy = 
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379 
let 
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380 
val full = Sign.full_name (Theory.sign_of thy); 
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381 

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382 
fun type_of (raw_name, vs, mx) = 
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383 
if null (duplicates vs) then (raw_name, length vs, mx) 
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384 
else error ("Duplicate parameters in type declaration: " ^ quote raw_name); 
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385 

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386 
fun arity_of (raw_name, len, mx) = 
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387 
(full (Syntax.type_name raw_name mx), replicate len logicS, logicS); 
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388 

03b81b6e1baa
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389 
val types = map type_of decls; 
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390 
val arities = map arity_of types; 
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391 
in 
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392 
thy 
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393 
> Theory.add_types types 
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394 
> Theory.add_arities_i arities 
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395 
end; 
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396 

03b81b6e1baa
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397 

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398 

5091  399 
(*** the ProtoPure theory ***) 
3987  400 

401 
val proto_pure = 

402 
Theory.pre_pure 

5907  403 
> Library.apply [TheoremsData.init, TheoryManagementData.init] 
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404 
> put_name "ProtoPure" 
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405 
> global_path 
3987  406 
> Theory.add_types 
4922
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407 
[("fun", 2, NoSyn), 
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408 
("prop", 0, NoSyn), 
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409 
("itself", 1, NoSyn), 
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410 
("dummy", 0, NoSyn)] 
3987  411 
> Theory.add_classes_i [(logicC, [])] 
412 
> Theory.add_defsort_i logicS 

413 
> Theory.add_arities_i 

414 
[("fun", [logicS, logicS], logicS), 

415 
("prop", [], logicS), 

416 
("itself", [logicS], logicS)] 

4922
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417 
> Theory.add_nonterminals Syntax.pure_nonterms 
3987  418 
> Theory.add_syntax Syntax.pure_syntax 
6027
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419 
> Theory.add_modesyntax ("symbols" , true) Syntax.pure_sym_syntax 
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420 
> Theory.add_modesyntax ("xsymbols", true) Syntax.pure_xsym_syntax 
3987  421 
> Theory.add_trfuns Syntax.pure_trfuns 
422 
> Theory.add_trfunsT Syntax.pure_trfunsT 

423 
> Theory.add_syntax 

424 
[("==>", "[prop, prop] => prop", Delimfix "op ==>")] 

425 
> Theory.add_consts 

426 
[("==", "['a::{}, 'a] => prop", InfixrName ("==", 2)), 

427 
("=?=", "['a::{}, 'a] => prop", InfixrName ("=?=", 2)), 

428 
("==>", "[prop, prop] => prop", Mixfix ("(_/ ==> _)", [2, 1], 1)), 

429 
("all", "('a => prop) => prop", Binder ("!!", 0, 0)), 

4788  430 
("Goal", "prop => prop", Mixfix ("GOAL _", [999], 1000)), 
3987  431 
("TYPE", "'a itself", NoSyn)] 
5041
a1d0a6d555cd
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432 
> Theory.add_modesyntax ("", false) 
a1d0a6d555cd
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433 
[("Goal", "prop => prop", Mixfix ("_", [0], 0))] 
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434 
> local_path 
6091  435 
> (add_defs o map Thm.no_attributes) 
4788  436 
[("flexpair_def", "(t =?= u) == (t == u::'a::{})"), 
437 
("Goal_def", "GOAL (PROP A) == PROP A")] 

4963
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438 
> end_theory; 
3987  439 

5091  440 
structure ProtoPure = 
441 
struct 

442 
val thy = proto_pure; 

443 
val flexpair_def = get_axiom thy "flexpair_def"; 

444 
val Goal_def = get_axiom thy "Goal_def"; 

445 
end; 

3987  446 

447 

448 
end; 

449 

450 

4022
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451 
structure BasicPureThy: BASIC_PURE_THY = PureThy; 
0770a19c48d3
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452 
open BasicPureThy; 