author  wenzelm 
Sat, 04 Sep 1999 21:02:19 +0200  
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child 7485  31a25b6af1b3 
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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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 
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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 cond_extern_thm_sg: Sign.sg > string > xstring 
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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 store_thm: (bstring * thm) * theory attribute list > theory > theory * thm 
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val smart_store_thms: (bstring * thm list) > thm list 
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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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val checkpoint: theory > theory 
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val add_typedecls: (bstring * string list * mixfix) list > theory > theory 
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val dummy_patternN: string 
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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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fun copy (ref x) = ref x; 
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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 = NameSpace.cond_extern_table space 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  92 
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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val cond_extern_thm_sg = NameSpace.cond_extern o #space o ! o get_theorems_sg; 
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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)) = 

182 
if i = j then x :: int (xs, ys) 

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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 map (attach_name o snd) (ints ithmss) end; 
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(*search globally*) 
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fun thms_containing thy consts = 
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(case filter (is_none o Sign.const_type (Theory.sign_of thy)) consts of 
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[] => flat (map (containing (consts \\ ignore)) (thy :: Theory.ancestors_of thy)) 

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 cs => raise THEORY ("thms_containing: undeclared consts " ^ commas_quote cs, [thy])); 

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(** store theorems **) (*DESTRUCTIVE*) 
3987  202 

4853  203 
(* naming *) 
204 

205 
fun gen_names len name = 

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

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fun name_single name x = [(name, x)]; 
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fun name_multi name xs = gen_names (length xs) name ~~ xs; 
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(* enter_thmx *) 
4853  213 

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fun warn_overwrite name = warning ("Replaced old copy of theorems " ^ quote name); 
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fun warn_same name = warning ("Theorem database already contains a copy of " ^ quote name); 
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fun enter_thmx _ app_name ("", thmx) = map #2 (app_name "" thmx) 
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 enter_thmx sg app_name (bname, thmx) = 
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let 
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val name = Sign.full_name sg bname; 
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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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224 

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val overwrite = 
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(case Symtab.lookup (thms_tab, name) of 
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227 
None => false 
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228 
 Some thms' => 
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if Library.equal_lists Thm.eq_thm (thms', named_thms) then (warn_same name; false) 
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else (warn_overwrite name; true)); 
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231 

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val space' = NameSpace.extend (space, [name]); 
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val thms_tab' = Symtab.update ((name, named_thms), thms_tab); 
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234 
val const_idx' = 
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if overwrite then make_const_idx thms_tab' 
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else foldl add_const_idx (const_idx, named_thms); 
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in r := {space = space', thms_tab = thms_tab', const_idx = const_idx'}; named_thms end; 
3987  238 

4853  239 

6091  240 
(* add_thms(s) *) 
4853  241 

6091  242 
fun add_thmx app_name app_att ((bname, thmx), atts) thy = 
5280  243 
let 
6091  244 
val (thy', thmx') = app_att ((thy, thmx), atts); 
245 
val thms'' = enter_thmx (Theory.sign_of thy') app_name (bname, thmx'); 

246 
in (thy', thms'') end; 

4853  247 

6091  248 
fun add_thmxs name app = Library.apply o map (fst oo add_thmx name app); 
5907  249 

6091  250 
val add_thms = add_thmxs name_single Thm.apply_attributes; 
251 
val add_thmss = add_thmxs name_multi Thm.applys_attributes; 

5907  252 

253 

6091  254 
(* have_thmss *) 
5907  255 

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fun have_thmss bname more_atts ths_atts thy = 
5907  257 
let 
6091  258 
fun app (x, (ths, atts)) = Thm.applys_attributes ((x, ths), atts); 
259 
val (thy', thmss') = 

5907  260 
foldl_map app (thy, map (fn (ths, atts) => (ths, atts @ more_atts)) ths_atts); 
6367  261 
val thms' = flat thmss'; 
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val thms'' = enter_thmx (Theory.sign_of thy') name_multi (bname, thms'); 
6769  263 
in (thy', thms'') end; 
5280  264 

265 

6091  266 
(* store_thm *) 
5280  267 

6091  268 
fun store_thm th_atts thy = 
269 
let val (thy', [th']) = add_thmx name_single Thm.apply_attributes th_atts thy 

5280  270 
in (thy', th') end; 
3987  271 

272 

7405  273 
(* smart_store_thms *) 
3987  274 

7405  275 
fun smart_store_thms (name, []) = error ("Cannot store empty list of theorems: " ^ quote name) 
276 
 smart_store_thms (name, [thm]) = enter_thmx (Thm.sign_of_thm thm) name_single (name, thm) 

277 
 smart_store_thms (name, thms) = 

278 
let 

279 
val merge_sg = Sign.merge_refs o apsnd (Sign.self_ref o Thm.sign_of_thm); 

280 
val sg_ref = foldl merge_sg (Sign.self_ref (Thm.sign_of_thm (hd thms)), tl thms); 

281 
in enter_thmx (Sign.deref sg_ref) name_multi (name, thms) end; 

3987  282 

283 

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(* store axioms as theorems *) 
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285 

4853  286 
local 
287 
fun add_ax app_name add ((name, axs), atts) thy = 

288 
let 

289 
val named_axs = app_name name axs; 

290 
val thy' = add named_axs thy; 

6091  291 
val thms = map (Thm.get_axiom thy' o fst) named_axs; 
292 
in add_thmss [((name, thms), atts)] thy' end; 

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293 

5907  294 
fun add_axs app_name add = Library.apply o map (add_ax app_name add); 
4853  295 
in 
296 
val add_axioms = add_axs name_single Theory.add_axioms; 

297 
val add_axioms_i = add_axs name_single Theory.add_axioms_i; 

298 
val add_axiomss = add_axs name_multi Theory.add_axioms; 

299 
val add_axiomss_i = add_axs name_multi Theory.add_axioms_i; 

300 
val add_defs = add_axs name_single Theory.add_defs; 

301 
val add_defs_i = add_axs name_single Theory.add_defs_i; 

302 
val add_defss = add_axs name_multi Theory.add_defs; 

303 
val add_defss_i = add_axs name_multi Theory.add_defs_i; 

304 
end; 

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305 

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306 

3987  307 

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308 
(*** derived theory operations ***) 
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309 

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310 
(** theory management **) 
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311 

5005  312 
(* data kind 'Pure/theory_management' *) 
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313 

5005  314 
structure TheoryManagementDataArgs = 
315 
struct 

316 
val name = "Pure/theory_management"; 

6660  317 
type T = {name: string, version: int}; 
5000  318 

6660  319 
val empty = {name = "", version = 0}; 
6547  320 
val copy = I; 
5005  321 
val prep_ext = I; 
5000  322 
fun merge _ = empty; 
5005  323 
fun print _ _ = (); 
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324 
end; 
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325 

5005  326 
structure TheoryManagementData = TheoryDataFun(TheoryManagementDataArgs); 
327 
val get_info = TheoryManagementData.get; 

328 
val put_info = TheoryManagementData.put; 

329 

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330 

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331 
(* get / put name *) 
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332 

5000  333 
val get_name = #name o get_info; 
6660  334 
fun put_name name = put_info {name = name, version = 0}; 
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335 

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336 

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337 
(* control prefixing of theory name *) 
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338 

5210  339 
val global_path = Theory.root_path; 
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340 

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341 
fun local_path thy = 
5210  342 
thy > Theory.root_path > Theory.add_path (get_name thy); 
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343 

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344 

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345 
(* begin / end theory *) 
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346 

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347 
fun begin_theory name thys = 
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348 
Theory.prep_ext_merge thys 
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349 
> put_name name 
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350 
> local_path; 
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351 

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352 
fun end_theory thy = Theory.add_name (get_name thy) thy; 
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353 

6682  354 
fun checkpoint thy = 
355 
if is_draft thy then 

356 
let val {name, version} = get_info thy in 

357 
thy 

358 
> Theory.add_name (name ^ ":" ^ string_of_int version) 

359 
> put_info {name = name, version = version + 1} 

360 
end 

361 
else thy; 

5000  362 

363 

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364 

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365 
(** add logical types **) 
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366 

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367 
fun add_typedecls decls thy = 
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368 
let 
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369 
val full = Sign.full_name (Theory.sign_of thy); 
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370 

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371 
fun type_of (raw_name, vs, mx) = 
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372 
if null (duplicates vs) then (raw_name, length vs, mx) 
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373 
else error ("Duplicate parameters in type declaration: " ^ quote raw_name); 
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374 

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375 
fun arity_of (raw_name, len, mx) = 
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376 
(full (Syntax.type_name raw_name mx), replicate len logicS, logicS); 
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377 

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378 
val types = map type_of decls; 
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379 
val arities = map arity_of types; 
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380 
in 
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381 
thy 
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382 
> Theory.add_types types 
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383 
> Theory.add_arities_i arities 
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384 
end; 
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385 

03b81b6e1baa
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386 

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387 

5091  388 
(*** the ProtoPure theory ***) 
3987  389 

6560
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390 
val dummy_patternN = "dummy_pattern"; 
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391 

3987  392 
val proto_pure = 
393 
Theory.pre_pure 

5907  394 
> Library.apply [TheoremsData.init, TheoryManagementData.init] 
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395 
> put_name "ProtoPure" 
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396 
> global_path 
3987  397 
> Theory.add_types 
4922
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398 
[("fun", 2, NoSyn), 
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399 
("prop", 0, NoSyn), 
03b81b6e1baa
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400 
("itself", 1, NoSyn), 
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401 
("dummy", 0, NoSyn)] 
3987  402 
> Theory.add_classes_i [(logicC, [])] 
403 
> Theory.add_defsort_i logicS 

404 
> Theory.add_arities_i 

405 
[("fun", [logicS, logicS], logicS), 

406 
("prop", [], logicS), 

407 
("itself", [logicS], logicS)] 

4922
03b81b6e1baa
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408 
> Theory.add_nonterminals Syntax.pure_nonterms 
3987  409 
> Theory.add_syntax Syntax.pure_syntax 
6692  410 
> Theory.add_modesyntax (Symbol.symbolsN, true) Syntax.pure_sym_syntax 
411 
> Theory.add_modesyntax (Symbol.xsymbolsN, true) Syntax.pure_xsym_syntax 

3987  412 
> Theory.add_trfuns Syntax.pure_trfuns 
413 
> Theory.add_trfunsT Syntax.pure_trfunsT 

414 
> Theory.add_syntax 

415 
[("==>", "[prop, prop] => prop", Delimfix "op ==>")] 

416 
> Theory.add_consts 

417 
[("==", "['a::{}, 'a] => prop", InfixrName ("==", 2)), 

418 
("=?=", "['a::{}, 'a] => prop", InfixrName ("=?=", 2)), 

419 
("==>", "[prop, prop] => prop", Mixfix ("(_/ ==> _)", [2, 1], 1)), 

420 
("all", "('a => prop) => prop", Binder ("!!", 0, 0)), 

4788  421 
("Goal", "prop => prop", Mixfix ("GOAL _", [999], 1000)), 
6547  422 
("TYPE", "'a itself", NoSyn), 
6560
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423 
(dummy_patternN, "'a", Delimfix "'_")] 
5041
a1d0a6d555cd
Goals may now contain assumptions, which are not returned.
nipkow
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5026
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changeset

424 
> Theory.add_modesyntax ("", false) 
7278  425 
[("Goal", "prop => prop", Mixfix ("_", [0], 1000))] 
4963
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426 
> local_path 
6091  427 
> (add_defs o map Thm.no_attributes) 
4788  428 
[("flexpair_def", "(t =?= u) == (t == u::'a::{})"), 
429 
("Goal_def", "GOAL (PROP A) == PROP A")] 

4963
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430 
> end_theory; 
3987  431 

5091  432 
structure ProtoPure = 
433 
struct 

434 
val thy = proto_pure; 

435 
val flexpair_def = get_axiom thy "flexpair_def"; 

436 
val Goal_def = get_axiom thy "Goal_def"; 

437 
end; 

3987  438 

439 

440 
end; 

441 

442 

4022
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443 
structure BasicPureThy: BASIC_PURE_THY = PureThy; 
0770a19c48d3
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444 
open BasicPureThy; 