much faster grammar loading and dynamic updates

src/runtime/c/pgf/vector.h

@@ -28,25 +28,6 @@ ref<C> vector_new(Vector<A> C::* field, size_t len)
     return res;
 }
 
-PGF_INTERNAL_DECL size_t
-get_next_padovan(size_t min);
-
-/* Resize a vector by changing its length. If there is no enough space
- * the implementation will create a copy, but whenever possible it will
- * return the reference to the original vector. A copy is created also
- * if txn_id is different from the current transaction. In this way
- * it is safe to change the length. */
-template <class A> inline PGF_INTERNAL
-ref<Vector<A>> vector_resize(ref<Vector<A>> vec, size_t len, txn_t txn_id)
-{
-    size_t new_len = get_next_padovan(len);
-    size_t old_len = get_next_padovan(vec->len);
-
-    vec = PgfDB::realloc<Vector<A>>(vec,old_len*sizeof(A),new_len*sizeof(A),txn_id);
-    vec->len = len;
-    return vec;
-}
-
 template <class A> inline PGF_INTERNAL
 ref<A> vector_elem(ref<Vector<A>> v, size_t index)
 {