Add macro for mapping C types to FR_TYPE_* values

diff --git a/src/lib/util/types.h b/src/lib/util/types.h
index d7a8376c8d9f80849b6a68b3a4bc85d534a61b61..66781e01d4e79e16c406cf2b295e47e2a92971c2 100644 (file)
--- a/src/lib/util/types.h
+++ b/src/lib/util/types.h
@@ -359,6 +359,52 @@ extern bool const fr_type_non_leaf[FR_TYPE_MAX + 1];
 #define fr_type_is_non_leaf(_x)                        (fr_type_non_leaf[_x])
 /** @} */
 
+/** Given a variable, return the equivalent FR_TYPE_* value
+ *
+ * @note Does not work for:
+ * - size_t / FR_TYPE_SIZE - Conflicts with other integers on many systems.
+ * - fr_ipaddr_t - Too many potential type mappings.
+ * - tmpl_t - Not an FR_TYPE_*.
+ *
+ * @param[in] _ct variable to translate.
+ */
+#  define FR_CTYPE_TO_TYPE(_ct) \
+_Generic(&(_ct), \
+       fr_ethernet_t *         : FR_TYPE_ETHERNET, \
+       fr_ethernet_t **        : FR_TYPE_ETHERNET, \
+       fr_ifid_t *             : FR_TYPE_IFID, \
+       fr_ifid_t **            : FR_TYPE_IFID, \
+       fr_time_t *             : FR_TYPE_DATE, \
+       fr_time_t **            : FR_TYPE_DATE, \
+       fr_time_delta_t *       : FR_TYPE_TIME_DELTA, \
+       fr_time_delta_t **      : FR_TYPE_TIME_DELTA, \
+       char const **           : FR_TYPE_STRING, \
+       char const ***          : FR_TYPE_STRING, \
+       bool *                  : FR_TYPE_BOOL, \
+       bool **                 : FR_TYPE_BOOL, \
+       uint8_t const **        : FR_TYPE_OCTETS, \
+       uint8_t const ***       : FR_TYPE_OCTETS, \
+       uint8_t *               : FR_TYPE_UINT8, \
+       uint8_t **              : FR_TYPE_UINT8, \
+       uint16_t *              : FR_TYPE_UINT16, \
+       uint16_t **             : FR_TYPE_UINT16, \
+       uint32_t *              : FR_TYPE_UINT32, \
+       uint32_t **             : FR_TYPE_UINT32, \
+       uint64_t *              : FR_TYPE_UINT64, \
+       uint64_t **             : FR_TYPE_UINT64, \
+       int8_t  *               : FR_TYPE_INT8, \
+       int8_t **               : FR_TYPE_INT8, \
+       int16_t *               : FR_TYPE_INT16, \
+       int16_t **              : FR_TYPE_INT16, \
+       int32_t *               : FR_TYPE_INT32, \
+       int32_t **              : FR_TYPE_INT32, \
+       int64_t *               : FR_TYPE_INT64, \
+       int64_t **              : FR_TYPE_INT64, \
+       float *                 : FR_TYPE_FLOAT, \
+       float **                : FR_TYPE_FLOAT , \
+       double *                : FR_TYPE_DOUBLE, \
+       double **               : FR_TYPE_DOUBLE)
+
 extern fr_table_num_ordered_t const fr_type_table[];
 extern size_t fr_type_table_len;