Backup, new approach to ast

memory.h

@@ -5,6 +5,11 @@ typedef struct Arena{
   U64 alignment;
 }Arena;
 
+typedef struct Arena_Checkpoint{
+  Arena *arena;
+  SizeU pos;
+} Arena_Checkpoint;
+
 function B32 string_compare(String a, String b);
 function void *arena_push_size(Arena *a, SizeU size);
 function String arena_push_string_copy(Arena *arena, String string);