src/HOL/Quickcheck_Examples/Quickcheck_Nesting.thy

treat map_filter similar to list_all, list_ex, list_ex1

theory Quickcheck_Nesting
imports Main
begin

ML \<open>
let
  open BNF_FP_Def_Sugar
  open BNF_LFP_Compat

  val compat_plugin = Plugin_Name.declare_setup \<^binding>\<open>compat\<close>;

  fun compat fp_sugars =
    perhaps (try (datatype_compat (map (dest_Type_name o #T) fp_sugars)));
in
  Theory.setup (fp_sugars_interpretation compat_plugin compat)
end
\<close>

end