1 files changed, 19 insertions, 0 deletions
diff --git a/src/gas_assembly_generator.h b/src/gas_assembly_generator.h
index 044e8ed..d7d2e1e 100644
--- a/src/gas_assembly_generator.h
+++ b/src/gas_assembly_generator.h
@@ -21,11 +21,30 @@
 #include "vector.h"
 #include <stdio.h>
 
+typedef enum evaluation_result_kind_t
+{
+  EVALUATION_RESULT_VOID,
+  EVALUATION_RESULT_REGISTER,
+  EVALUATION_RESULT_LITERAL_INTEGER
+} evaluation_result_kind_t;
+
+typedef union evaluation_result_data_t
+{
+  int64_t literal_int;
+} evaluation_result_data_t;
+
+typedef struct evaluation_result_t
+{
+  evaluation_result_kind_t kind;
+  evaluation_result_data_t data;
+} evaluation_result_t;
+
 typedef struct gas_assembly_generator_t
 {
   FILE *stream;
   vector_t *refs;
   int stack_offset;
+  evaluation_result_t latest_evaluation;
 } gas_assembly_generator_t;
 
 void