Prepare for checking exhaustion

1 files changed, 3 insertions, 6 deletions

diff --git a/src/duckdb/Result.zig b/src/duckdb/Result.zig
index 8e06b67..f399fb5 100644
--- a/src/duckdb/Result.zig
+++ b/src/duckdb/Result.zig
@@ -54,13 +54,12 @@ pub fn Result(comptime T: type) type{
         /// There's not way to know how many total elements we have, but we can
         /// know how many we have in the current chunk.
         fn getCurrentChunkSize(self: Self) usize {
-            if (self._chunk == null) {
-                return 0;
-            }
+            std.debug.assert(self._chunk != null);
             return c.duckdb_data_chunk_get_size(self._chunk);
         }
 
         pub fn getColumnCount(self: Self) usize {
+            std.debug.assert(self._chunk != null);
             return c.duckdb_data_chunk_get_column_count(self._chunk);
         }
 
@@ -70,8 +69,6 @@ pub fn Result(comptime T: type) type{
         fn fetchDataChunk(self: *Self) void{
             if (self._chunk != null){
                 c.duckdb_destroy_data_chunk(&self._chunk);
-                self._chunk = null;
-                self._current_row = 0;
             }
             self._chunk = c.duckdb_fetch_chunk(self._res);
             for (self._columns, 0..) |_, i| {
@@ -81,10 +78,10 @@ pub fn Result(comptime T: type) type{
                 self._data[i]       = c.duckdb_vector_get_data(col);
             }
             self._current_row = 0;
-
         }
 
         pub fn exausted(self: Self) bool{
+            // TODO: check exhaustion properly
             return self._chunk != null;
         }