1 files changed, 8 insertions, 1 deletions
diff --git a/val.h b/val.h
index 4560a1c..1f2bd8d 100644
--- a/val.h
+++ b/val.h
@@ -10,9 +10,9 @@ typedef struct _obj Obj;
 
 
 typedef enum {
+	TY_NIL,
 	TY_NUM,
 	TY_BOOL,
-	TY_NIL,
 } ValTy;
 
 struct _val {
@@ -29,11 +29,18 @@ struct _obj {
 	int foo;
 };
 
+void print_val(Val v);
+
 
 #define IS_NUM(x) (x.ty == TY_NUM)
 #define IS_BOOL(x) (x.ty == TY_BOOL)
 #define IS_NIL(x) (x.ty == NIL)
 
+#define AS_NUM(x) (x.as.d)
+#define AS_BOOL(x) (x.as.b)
 
+#define VAL_NUM(x) ((Val){.ty=TY_NUM, .as.d=x})
+#define VAL_BOOL(x) ((Val){.ty=TY_BOOL, .as.b=x})
+#define VAL_NIL ((Val){.ty=TY_NIL})
 
 #endif