Add oplist for variant

(still missing some operators)

m-variant.h

@@ -173,6 +173,20 @@
     }
 
 
+#define VARIANTI_OPLIST(name, ...)                                      \
+  (INIT(M_C(name,_init)),                                               \
+   INIT_SET(M_C(name, _init_set)),                                      \
+   SET(M_C(name,_set)),                                                 \
+   CLEAR(M_C(name, _clear)),                                            \
+   TYPE(M_C(name,_t)),                                                  \
+   M_IF_METHOD_ALL(HASH, __VA_ARGS__)(HASH(M_C(name, _hash)),),         \
+   M_IF_METHOD_ALL(EQUAL, __VA_ARGS__)(EQUAL(M_C(name, _equal_p)),),    \
+   M_IF_METHOD_ALL(GET_STR, __VA_ARGS__)(EQUAL(M_C(name, _get_str)),),  \
+   M_IF_METHOD_ALL(IN_STR, __VA_ARGS__)(EQUAL(M_C(name, _in_str)),),    \
+   M_IF_METHOD_ALL(OUT_STR, __VA_ARGS__)(EQUAL(M_C(name, _out_str)),),  \
+   M_IF_METHOD_ALL(INIT_MOVE, __VA_ARGS__)(EQUAL(M_C(name, _init_move)),), \
+   M_IF_METHOD_ALL(MOVE, __VA_ARGS__)(EQUAL(M_C(name, _move)),),        \
+   )
 
 
 /********************** External interface *************************/
@@ -186,5 +200,11 @@
   VARIANTI_DEFINE_SETTER(name, __VA_ARGS__)         \
   VARIANTI_DEFINE_GETTER(name, __VA_ARGS__)         \
 
+/* Define the oplist of a tuple.
+   VARIANT_OPLIST(name[, oplist of the first type, ...]) */
+#define VARIANT_OPLIST(...)                                        \
+  M_IF_NARGS_EQ1(__VA_ARGS__)                                      \
+  (VARIANTI_OPLIST(__VA_ARGS__, () ),                              \
+   VARIANTI_OPLIST(__VA_ARGS__ ))
 
 #endif