added tables to the execution part

src/parser.rs

@@ -341,6 +341,15 @@ fn read_table(input: &Vec<Token>, pos: &mut usize) -> ASTPart {
         if input[*pos].typ == TokenType::SEPARATOR && input[*pos].value == "[" {
             *pos += 1;
             let keyy = read_exp(pos, input, &key_ends, &key_ends);
+            match keyy {
+                ASTPart::Table(_) => {
+                    panic!("Table keys cannot be tables at {}", input[*pos].pos);
+                },
+                ASTPart::Function(_) => {
+                    panic!("Table keys cannot be functions at {}", input[*pos].pos);
+                },
+                _ => {}
+            }
             if input[*pos].typ != TokenType::SEPARATOR || input[*pos].value != "]" {
                 panic!("Unexpected end of key at {}", input[*pos].pos);
             }