1 files changed, 13 insertions, 3 deletions
diff --git a/nqasm.h b/nqasm.h
index 0bc51f7..e5a7452 100644
--- a/nqasm.h
+++ b/nqasm.h
@@ -1,15 +1,23 @@
 #ifndef NQ_NQASM_H
 #define NQ_NQASM_H
 
-#define ARG_INTEGER   0
-#define ARG_LABEL     1
-#define ARG_PC        2
+enum {
+	ARG_INTEGER,
+	ARG_LABEL,
+	ARG_PC,
+
+	ARG_UNARY_ADD,
+	ARG_UNARY_SUB,
+	ARG_UNARY_NOT,
+	ARG_UNARY_INV,
+};
 
 struct argument {
 	int type;
 	union {
 		long value;
 		char *label;
+		const struct argument *children[1];
 	};
 };
 
@@ -25,5 +33,7 @@ struct instruction {
 void add_instruction(const struct instruction *);
 void add_label(const char *);
 
+struct argument *argdup(const struct argument *);
+
 #endif