attr_position_valid_valid,
};
+#define ATTR_IS_INT(x) ((x) >= attr_type_int_begin && (x) <= attr_type_int_end)
+#define ATTR_IS_DOUBLE(x) ((x) >= attr_type_double_begin && (x) <= attr_type_double_end)
+#define ATTR_IS_STRING(x) ((x) >= attr_type_string_begin && (x) <= attr_type_string_end)
+#define ATTR_IS_OBJECT(x) ((x) >= attr_type_object_begin && (x) <= attr_type_object_end)
+#define ATTR_IS_COORD_GEO(x) ((x) >= attr_type_coord_geo_begin && (x) <= attr_type_coord_geo_end)
+#define ATTR_IS_NUMERIC(x) (ATTR_IS_INT(x) || ATTR_IS_DOUBLE(x))
+
struct attr {
enum attr_type type;
union {
void attr_data_set(struct attr *attr, void *data);
void attr_data_set_le(struct attr *attr, void *data);
void attr_free(struct attr *attr);
+void attr_dup_content(struct attr *src, struct attr *dst);
struct attr *attr_dup(struct attr *attr);
void attr_list_free(struct attr **attrs);
struct attr **attr_list_dup(struct attr **attrs);