1 files changed, 6 insertions, 1 deletions
diff --git a/include/program.h b/include/program.h
index 6135726..c097c7b 100644
--- a/include/program.h
+++ b/include/program.h
@@ -3,10 +3,15 @@
 
 #include "std/buffer.h"
 #include "std/hash_map.h"
+#include "value.h"
+
+#define TSL_STACK_MAX_SIZE 255
 
 typedef struct {
     TslBuffer /*TslBytecode*/ function_bytecode_list;
-    TslHashMap variables;
+    TslHashMap /*TslStringView, TslValue*/ variables;
+    TslValue stack_values[TSL_STACK_MAX_SIZE];
+    size_t stack_index;
 } TslProgram;
 
 typedef enum {