introduce tableset and impl for tables enum (#12617)

Co-authored-by: dkathiriya <lakshya-sky@users.noreply.github.com>
Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>

crates/storage/db/src/tables/mod.rs

@@ -98,6 +98,15 @@ pub trait TableViewer<R> {
     }
 }
 
+/// General trait for defining the set of tables
+/// Used to initialize database
+pub trait TableSet {
+    /// Returns all the table names in the database.
+    fn table_names(&self) -> Vec<&'static str>;
+    /// Returns `true` if the table at the given index is a `DUPSORT` table.
+    fn is_dupsort(&self, idx: usize) -> bool;
+}
+
 /// Defines all the tables in the database.
 #[macro_export]
 macro_rules! tables {
@@ -243,6 +252,18 @@ macro_rules! tables {
             }
         }
 
+        impl TableSet for Tables {
+            fn table_names(&self) -> Vec<&'static str> {
+                //vec![$(table_names::$name,)*]
+                Self::ALL.iter().map(|t| t.name()).collect()
+            }
+
+            fn is_dupsort(&self, idx: usize) -> bool {
+                let table: Self = self.table_names()[idx].parse().expect("should be valid table name");
+                table.is_dupsort()
+            }
+        }
+
         // Need constants to match on in the `FromStr` implementation.
         #[allow(non_upper_case_globals)]
         mod table_names {