maintain thm_name vs. derivation_id for global facts;

--- a/src/Pure/facts.ML	Fri Aug 16 21:02:18 2019 +0200
+++ b/src/Pure/facts.ML	Fri Aug 16 21:38:42 2019 +0200
@@ -46,6 +46,7 @@
   val hide: bool -> string -> T -> T
   type thm_name = string * int
   val thm_name_ord: thm_name * thm_name -> order
+  val thm_name_print: thm_name -> string
   val thm_name_flat: thm_name -> string
   val thm_name_list: string -> thm list -> (thm_name * thm) list
   val get_thm: Context.generic -> T -> thm_name * Position.T -> thm
@@ -306,6 +307,10 @@
 type thm_name = string * int;
 val thm_name_ord = prod_ord string_ord int_ord;
 
+fun thm_name_print (name, i) =
+  if name = "" orelse i = 0 then name
+  else name ^ enclose "(" ")" (string_of_int i);
+
 fun thm_name_flat (name, i) =
   if name = "" orelse i = 0 then name
   else name ^ "_" ^ string_of_int i;

--- a/src/Pure/global_theory.ML	Fri Aug 16 21:02:18 2019 +0200
+++ b/src/Pure/global_theory.ML	Fri Aug 16 21:38:42 2019 +0200
@@ -12,6 +12,9 @@
   val defined_fact: theory -> string -> bool
   val alias_fact: binding -> string -> theory -> theory
   val hide_fact: bool -> string -> theory -> theory
+  val dest_thms: bool -> theory list -> theory -> (Facts.thm_name * thm) list
+  val dest_thm_names: theory -> (proof_serial * Facts.thm_name) list
+  val lookup_thm_name: theory -> string -> proof_serial -> Facts.thm_name option
   val get_thms: theory -> xstring -> thm list
   val get_thm: theory -> xstring -> thm
   val transfer_theories: theory -> thm -> thm
@@ -55,14 +58,17 @@
 
 structure Data = Theory_Data
 (
-  type T = Facts.T;
-  val empty = Facts.empty;
-  val extend = I;
-  val merge = Facts.merge;
+  type T = Facts.T * Facts.thm_name Inttab.table lazy option;
+  val empty: T = (Facts.empty, NONE);
+  fun extend (facts, _) = (facts, NONE);
+  fun merge ((facts1, _), (facts2, _)) = (Facts.merge (facts1, facts2), NONE);
 );
 
-val facts_of = Data.get;
-fun map_facts f = Data.map f;
+
+(* facts *)
+
+val facts_of = #1 o Data.get;
+val map_facts = Data.map o apfst;
 
 fun check_fact thy = Facts.check (Context.Theory thy) (facts_of thy);
 val intern_fact = Facts.intern o facts_of;
@@ -73,6 +79,55 @@
 
 fun hide_fact fully name = map_facts (Facts.hide fully name);
 
+fun dest_thms verbose prev_thys thy =
+  Facts.dest_static verbose (map facts_of prev_thys) (facts_of thy)
+  |> maps (uncurry Facts.thm_name_list);
+
+
+(* thm_name vs. derivation_id *)
+
+val thm_names_of = #2 o Data.get;
+val map_thm_names = Data.map o apsnd;
+
+fun make_thm_names thy =
+  (dest_thms true (Theory.parents_of thy) thy, Inttab.empty)
+  |-> fold (fn (thm_name, thm) => fn thm_names =>
+    (case Thm.derivation_id (Thm.transfer thy thm) of
+      NONE => thm_names
+    | SOME {serial, theory_name} =>
+        if Context.theory_long_name thy <> theory_name then
+          raise THM ("Bad theory name for derivation", 0, [thm])
+        else
+          (case Inttab.lookup thm_names serial of
+            SOME thm_name' =>
+              raise THM ("Duplicate use of derivation identity for " ^
+                Facts.thm_name_print thm_name ^ " vs. " ^
+                Facts.thm_name_print thm_name', 0, [thm])
+          | NONE => Inttab.update (serial, thm_name) thm_names)));
+
+fun get_thm_names thy =
+  (case thm_names_of thy of
+    NONE => make_thm_names thy
+  | SOME lazy_tab => Lazy.force lazy_tab);
+
+val dest_thm_names = Inttab.dest o get_thm_names;
+
+fun lookup_thm_name thy theory_name serial =
+  Theory.nodes_of thy |> get_first (fn thy' =>
+    if Context.theory_long_name thy' = theory_name
+    then Inttab.lookup (get_thm_names thy') serial else NONE);
+
+val _ =
+  Theory.setup (Theory.at_end (fn thy =>
+    if is_some (thm_names_of thy) then NONE
+    else
+      let
+        val lazy_tab =
+          if Future.proofs_enabled 1
+          then Lazy.lazy (fn () => make_thm_names thy)
+          else Lazy.value (make_thm_names thy);
+      in SOME (map_thm_names (K (SOME lazy_tab)) thy) end));
+
 
 (* retrieve theorems *)
 
@@ -189,7 +244,8 @@
     in thy |> Thm.register_proofs thms' |> add_facts (b, thms') end;
 
 val app_facts =
-  apfst flat oo fold_map (fn (thms, atts) => fold_map (Thm.theory_attributes atts) thms);
+  apfst flat oo fold_map (fn (thms, atts) => fn thy =>
+    fold_map (Thm.theory_attributes atts) (map (Thm.transfer thy) thms) thy);
 
 fun apply_facts name_flags1 name_flags2 (b, facts) thy =
   if Binding.is_empty b then app_facts facts thy |-> register_proofs