FEATURE: BOOST_FUSION_ADAPT_STRUCT can now also be called completely with

variadics arguments.

The following signature is possible :

 BOOST_FUSION_ADAPT_STRUCT(
        struct_name,
        member_name0,
        (BOOST_FUSION_ADAPT_AUTO, member_name1)
        (member_type2, member_name2)
	member_name3,
        ...
        )

include/boost/fusion/adapted/struct/adapt_struct.hpp

@@ -12,6 +12,9 @@
 #include <boost/fusion/support/config.hpp>
 #include <boost/preprocessor/config/config.hpp>
 #include <boost/preprocessor/variadic.hpp>
+#include <boost/preprocessor/variadic/to_seq.hpp>
+#include <boost/preprocessor/seq/for_each.hpp>
+#include <boost/preprocessor/seq/push_front.hpp>
 #include <boost/preprocessor/cat.hpp>
 #include <boost/preprocessor/empty.hpp>
 #include <boost/preprocessor/control/if.hpp>
@@ -34,6 +37,7 @@
 #include <boost/fusion/adapted/struct/detail/end_impl.hpp>
 #include <boost/fusion/adapted/struct/detail/value_of_impl.hpp>
 #include <boost/fusion/adapted/struct/detail/deref_impl.hpp>
+#include <boost/fusion/adapted/struct/detail/preprocessor/is_seq.hpp>
 
 #if BOOST_PP_VARIADICS
 
@@ -98,6 +102,30 @@
             BOOST_FUSION_ADAPT_STRUCT_FILLER_0 ATTRIBUTES,_END),                \
         BOOST_FUSION_ADAPT_STRUCT_C)
 
+
+#if BOOST_PP_VARIADICS
+
+#define BOOST_FUSION_ADAPT_STRUCT_PROCESS_PARAM(r, data, elem)                  \
+    BOOST_PP_IF(BOOST_FUSION_PP_IS_SEQ(elem),                                   \
+      BOOST_PP_CAT( BOOST_FUSION_ADAPT_STRUCT_FILLER_0 elem ,_END),             \
+      BOOST_FUSION_ADAPT_STRUCT_CREATE_MEMBER_TUPLE(elem)                       \
+   )
+
+#define BOOST_FUSION_ADAPT_STRUCT_CREATE_MEMBER_TUPLE_FROM_VARIADICS(...)       \
+    BOOST_PP_SEQ_PUSH_FRONT(  \
+    BOOST_PP_SEQ_FOR_EACH(BOOST_FUSION_ADAPT_STRUCT_PROCESS_PARAM, unused, BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__)), (0,0))
+
+#define BOOST_FUSION_ADAPT_STRUCT(NAME, ...)                                    \
+    BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
+        (0),                                                                    \
+        (0)(NAME),                                                              \
+        struct_tag,                                                             \
+        0,                                                                      \
+        BOOST_FUSION_ADAPT_STRUCT_CREATE_MEMBER_TUPLE_FROM_VARIADICS(__VA_ARGS__), \
+        BOOST_FUSION_ADAPT_STRUCT_C)
+        
+#else // BOOST_PP_VARIADICS
+
 #define BOOST_FUSION_ADAPT_STRUCT(NAME, ATTRIBUTES)                             \
     BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
         (0),                                                                    \
@@ -107,6 +135,8 @@
         BOOST_PP_CAT( BOOST_FUSION_ADAPT_STRUCT_FILLER_0(0,0)ATTRIBUTES,_END),  \
         BOOST_FUSION_ADAPT_STRUCT_C)
 
+#endif // BOOST_PP_VARIADICS
+
 #define BOOST_FUSION_ADAPT_STRUCT_AS_VIEW(NAME, ATTRIBUTES)                     \
     BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
         (0),                                                                    \

include/boost/fusion/adapted/struct/detail/preprocessor/is_seq.hpp

@@ -0,0 +1,41 @@
+/*=============================================================================
+    BOOST_PP_VARIADICS version of BOOST_PP_IS_SEQ inspired from 
+    boost/mpl/aux_/preprocessor/is_seq.hpp, original copyrights goes to :
+
+    Copyright Paul Mensonides 2003
+    Copyright Aleksey Gurtovoy 2003-2004
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+==============================================================================*/
+
+#ifndef BOOST_FUSION_ADAPTED_STRUCT_DETAIL_PREPROCESSOR_IS_SEQ_HPP
+#define BOOST_FUSION_ADAPTED_STRUCT_DETAIL_PREPROCESSOR_IS_SEQ_HPP
+
+#include <boost/preprocessor/seq/size.hpp>
+#include <boost/preprocessor/arithmetic/dec.hpp>
+#include <boost/preprocessor/punctuation/paren.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/config/config.hpp>
+
+#if BOOST_PP_VARIADICS
+
+#define BOOST_FUSION_PP_IS_SEQ(seq) BOOST_PP_CAT(BOOST_FUSION_PP_IS_SEQ_,       \
+    BOOST_FUSION_PP_IS_SEQ_0 seq BOOST_PP_RPAREN())
+
+#define BOOST_FUSION_PP_IS_SEQ_0(...)                                           \
+    BOOST_FUSION_PP_IS_SEQ_1(__VA_ARGS__
+
+#define BOOST_FUSION_PP_IS_SEQ_ALWAYS_0(...)                                    \
+    0
+
+#define BOOST_FUSION_PP_IS_SEQ_BOOST_FUSION_PP_IS_SEQ_0                         \
+    BOOST_FUSION_PP_IS_SEQ_ALWAYS_0(
+
+#define BOOST_FUSION_PP_IS_SEQ_BOOST_FUSION_PP_IS_SEQ_1(...)                    \
+    1
+
+#endif // BOOST_PP_VARIADICS
+
+#endif

test/sequence/adapt_struct.cpp

@@ -4,6 +4,8 @@
     Distributed under the Boost Software License, Version 1.0. (See accompanying
     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
+#define BOOST_PP_VARIADICS 1
+
 #include <boost/detail/lightweight_test.hpp>
 #include <boost/fusion/adapted/struct/adapt_struct.hpp>
 #include <boost/fusion/sequence/intrinsic/at.hpp>
@@ -38,6 +40,7 @@ namespace ns
     {
         int x;
         int y;
+        int z;
     };
 
 #if !BOOST_WORKAROUND(__GNUC__,<4)
@@ -58,8 +61,9 @@ namespace ns
 
 BOOST_FUSION_ADAPT_STRUCT(
     ns::point,
-    (x)
+    (int, x)
-    (int, y)
+    (int, y),
+    z
 )
 
 #if !BOOST_WORKAROUND(__GNUC__,<4)
@@ -71,7 +75,7 @@ BOOST_FUSION_ADAPT_STRUCT(
 #endif
 
 struct s { int m; };
-BOOST_FUSION_ADAPT_STRUCT(s, (m))
+BOOST_FUSION_ADAPT_STRUCT(s, (int, m))
 
 int
 main()
@@ -90,13 +94,13 @@ main()
         std::cout << at_c<0>(p) << std::endl;
         std::cout << at_c<1>(p) << std::endl;
         std::cout << p << std::endl;
-        BOOST_TEST(p == make_vector(123, 456));
+        BOOST_TEST(p == make_vector(123, 456, 4));
 
         at_c<0>(p) = 6;
         at_c<1>(p) = 9;
-        BOOST_TEST(p == make_vector(6, 9));
+        BOOST_TEST(p == make_vector(6, 9, 12));
 
-        BOOST_STATIC_ASSERT(boost::fusion::result_of::size<ns::point>::value == 2);
+        BOOST_STATIC_ASSERT(boost::fusion::result_of::size<ns::point>::value == 3);
         BOOST_STATIC_ASSERT(!boost::fusion::result_of::empty<ns::point>::value);
 
         BOOST_TEST(front(p) == 6);
@@ -104,9 +108,9 @@ main()
     }
 
     {
-        fusion::vector<int, float> v1(4, 2);
+        fusion::vector<int, float, int> v1(4, 2, 3);
-        ns::point v2 = {5, 3};
+        ns::point v2 = {5, 3, 2};
-        fusion::vector<long, double> v3(5, 4);
+        fusion::vector<long, double, int> v3(5, 4, 2);
         BOOST_TEST(v1 < v2);
         BOOST_TEST(v1 <= v2);
         BOOST_TEST(v2 > v1);
@@ -119,15 +123,15 @@ main()
 
     {
         // conversion from ns::point to vector
-        ns::point p = {5, 3};
+        ns::point p = {5, 3, 4};
-        fusion::vector<int, long> v(p);
+        fusion::vector<int, long, int> v(p);
         v = p;
     }
 
     {
         // conversion from ns::point to list
-        ns::point p = {5, 3};
+        ns::point p = {5, 3, 4};
-        fusion::list<int, long> l(p);
+        fusion::list<int, long, int> l(p);
         l = p;
     }