AST idea

token_array.c

@@ -71,6 +71,8 @@ token_array_iter_next(Token_Array *array){
 
 function Token *
 token_array_iter_peek(Token_Array *array, S64 i){
+  // @Todo(Krzosa): Simplify, too many calculations here
+  // Why even change state?
   S64 save_len = array->iter_len;
   S64 save_block = array->iter_block;
   Token_Bucket *save_bucket = array->iter_bucket;