(* Title: HOL/Tools/Sledgehammer/named_thm_set.ML
Author: Makarius
Author: Jasmin Blanchette, TU Muenchen
Named sets of theorems.
*)
signature NAMED_THM_SET =
sig
val member: Proof.context -> thm -> bool
val add_thm: thm -> Context.generic -> Context.generic
val del_thm: thm -> Context.generic -> Context.generic
val add: attribute
val del: attribute
val setup: theory -> theory
end;
functor Named_Thm_Set(val name: string val description: string)
: NAMED_THM_SET =
struct
structure Data = Generic_Data
(
type T = thm Termtab.table;
val empty = Termtab.empty;
val extend = I;
fun merge tabs = Termtab.merge (K true) tabs;
);
fun member ctxt th =
Termtab.defined (Data.get (Context.Proof ctxt)) (Thm.full_prop_of th);
fun add_thm th = Data.map (Termtab.update (Thm.full_prop_of th, th));
fun del_thm th = Data.map (Termtab.delete_safe (Thm.full_prop_of th));
val add = Thm.declaration_attribute add_thm;
val del = Thm.declaration_attribute del_thm;
val setup =
Attrib.setup (Binding.name name) (Attrib.add_del add del)
("declaration of " ^ description) #>
PureThy.add_thms_dynamic (Binding.name name,
map #2 o Termtab.dest o Data.get);
end;