Imported Upstream version 1.57.0

[platform/upstream/boost.git] / boost / preprocessor / array / to_list.hpp

diff --git a/boost/preprocessor/array/to_list.hpp b/boost/preprocessor/array/to_list.hpp
index 9198561..4cb45b6 100644 (file)
--- a/boost/preprocessor/array/to_list.hpp
+++ b/boost/preprocessor/array/to_list.hpp
@@ -15,19 +15,33 @@
 #
 # include <boost/preprocessor/cat.hpp>
 # include <boost/preprocessor/config/config.hpp>
+# include <boost/preprocessor/array/size.hpp>
+# include <boost/preprocessor/control/if.hpp>
 # include <boost/preprocessor/tuple/to_list.hpp>
 #
 # /* BOOST_PP_ARRAY_TO_LIST */
 #
+#    define BOOST_PP_ARRAY_TO_LIST(array) \
+               BOOST_PP_IF \
+                       ( \
+                       BOOST_PP_ARRAY_SIZE(array), \
+                       BOOST_PP_ARRAY_TO_LIST_DO, \
+                       BOOST_PP_ARRAY_TO_LIST_EMPTY \
+                       ) \
+               (array) \
+/**/
+#
+#    define BOOST_PP_ARRAY_TO_LIST_EMPTY(array) BOOST_PP_NIL
+#
 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
-#    define BOOST_PP_ARRAY_TO_LIST(array) BOOST_PP_ARRAY_TO_LIST_I(BOOST_PP_TUPLE_TO_LIST, array)
+#    define BOOST_PP_ARRAY_TO_LIST_DO(array) BOOST_PP_ARRAY_TO_LIST_I(BOOST_PP_TUPLE_TO_LIST, array)
 #    define BOOST_PP_ARRAY_TO_LIST_I(m, args) BOOST_PP_ARRAY_TO_LIST_II(m, args)
 #    define BOOST_PP_ARRAY_TO_LIST_II(m, args) BOOST_PP_CAT(m ## args,)
 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
-#    define BOOST_PP_ARRAY_TO_LIST(array) BOOST_PP_ARRAY_TO_LIST_I(array)
+#    define BOOST_PP_ARRAY_TO_LIST_DO(array) BOOST_PP_ARRAY_TO_LIST_I(array)
 #    define BOOST_PP_ARRAY_TO_LIST_I(array) BOOST_PP_TUPLE_TO_LIST ## array
 # else
-#    define BOOST_PP_ARRAY_TO_LIST(array) BOOST_PP_TUPLE_TO_LIST array
+#    define BOOST_PP_ARRAY_TO_LIST_DO(array) BOOST_PP_TUPLE_TO_LIST array
 # endif
 #
 # endif