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Subject: [Boost-commit] svn:boost r70798 - in branches/release: . boost boost/bimap boost/fusion boost/fusion/container/list/detail boost/gil boost/graph boost/icl boost/integer boost/interprocess boost/intrusive boost/iostreams boost/msm boost/numeric/ublas boost/pool boost/program_options boost/property_tree boost/signals boost/spirit boost/spirit/home boost/spirit/home/karma boost/spirit/home/support boost/statechart boost/type_traits boost/typeof boost/utility boost/uuid boost/variant boost/variant/detail boost/wave libs libs/bimap libs/date_time libs/fusion libs/graph_parallel libs/icl libs/icl/doc libs/icl/doc/html libs/icl/doc/html/header/boost/icl libs/icl/test libs/icl/test/test_doc_code_ libs/integer libs/mpi/build libs/mpl/doc/refmanual libs/mpl/doc/src/refmanual libs/msm libs/numeric/ublas libs/numeric/ublas/doc libs/parameter/doc/html libs/pool libs/program_options libs/property_tree libs/serialization libs/serialization/doc libs/serialization/vc7ide libs/signals libs/signals2 libs/spirit libs/spirit/classic/example libs/spirit/doc libs/spirit/example libs/spirit/phoenix libs/spirit/test libs/spirit/test/qi libs/statechart libs/static_assert libs/timer libs/type_traits libs/typeof/doc libs/units/test libs/utility libs/utility/swap/test libs/uuid libs/variant/test libs/wave status tools tools/bcp tools/quickbook tools/regression tools/regression/src tools/wave
From: steven_at_[hidden]
Date: 2011-03-31 17:08:37

Author: steven_watanabe
Date: 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
New Revision: 70798
URL: http://svn.boost.org/trac/boost/changeset/70798

Log:
Merge variant from the trunk.
Properties modified:
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   branches/release/INSTALL (props changed)
   branches/release/Jamroot (props changed)
   branches/release/LICENSE_1_0.txt (props changed)
   branches/release/boost/ (props changed)
   branches/release/boost-build.jam (props changed)
   branches/release/boost.css (props changed)
   branches/release/boost.png (props changed)
   branches/release/boost/bimap/ (props changed)
   branches/release/boost/concept_check.hpp (props changed)
   branches/release/boost/config.hpp (props changed)
   branches/release/boost/fusion/ (props changed)
   branches/release/boost/fusion/container/list/detail/build_cons.hpp (props changed)
   branches/release/boost/gil/ (props changed)
   branches/release/boost/graph/ (props changed)
   branches/release/boost/icl/ (props changed)
   branches/release/boost/integer/ (props changed)
   branches/release/boost/interprocess/ (props changed)
   branches/release/boost/intrusive/ (props changed)
   branches/release/boost/iostreams/ (props changed)
   branches/release/boost/math_fwd.hpp (props changed)
   branches/release/boost/msm/ (props changed)
   branches/release/boost/numeric/ublas/ (props changed)
   branches/release/boost/numeric/ublas/functional.hpp (props changed)
   branches/release/boost/pool/ (props changed)
   branches/release/boost/program_options/ (props changed)
   branches/release/boost/property_tree/ (props changed)
   branches/release/boost/signals/ (props changed)
   branches/release/boost/signals2.hpp (props changed)
   branches/release/boost/spirit/ (props changed)
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   branches/release/boost/spirit/home/karma/ (props changed)
   branches/release/boost/spirit/home/support/attributes.hpp (props changed)
   branches/release/boost/statechart/ (props changed)
   branches/release/boost/token_functions.hpp (props changed)
   branches/release/boost/type_traits/ (props changed)
   branches/release/boost/typeof/message.hpp (props changed)
   branches/release/boost/typeof/register_functions.hpp (props changed)
   branches/release/boost/typeof/register_functions_iterate.hpp (props changed)
   branches/release/boost/typeof/typeof.hpp (props changed)
   branches/release/boost/typeof/unsupported.hpp (props changed)
   branches/release/boost/utility/ (props changed)
   branches/release/boost/utility/value_init.hpp (props changed)
   branches/release/boost/uuid/ (props changed)
   branches/release/boost/variant/ (props changed)
   branches/release/boost/version.hpp (props changed)
   branches/release/boost/wave/ (props changed)
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   branches/release/libs/fusion/ (props changed)
   branches/release/libs/graph_parallel/ (props changed)
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   branches/release/libs/msm/ (props changed)
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   branches/release/libs/parameter/doc/html/index.html (props changed)
   branches/release/libs/pool/ (props changed)
   branches/release/libs/program_options/ (props changed)
   branches/release/libs/property_tree/ (props changed)
   branches/release/libs/serialization/ (props changed)
   branches/release/libs/serialization/doc/ (props changed)
   branches/release/libs/serialization/vc7ide/ (props changed)
   branches/release/libs/signals/ (props changed)
   branches/release/libs/signals2/ (props changed)
   branches/release/libs/spirit/ (props changed)
   branches/release/libs/spirit/classic/example/ (props changed)
   branches/release/libs/spirit/doc/ (props changed)
   branches/release/libs/spirit/example/ (props changed)
   branches/release/libs/spirit/phoenix/ (props changed)
   branches/release/libs/spirit/test/ (props changed)
   branches/release/libs/spirit/test/qi/optional.cpp (props changed)
   branches/release/libs/statechart/ (props changed)
   branches/release/libs/static_assert/ (props changed)
   branches/release/libs/timer/ (props changed)
   branches/release/libs/type_traits/ (props changed)
   branches/release/libs/typeof/doc/typeof.qbk (props changed)
   branches/release/libs/units/test/ (props changed)
   branches/release/libs/utility/ (props changed)
   branches/release/libs/utility/swap.html (props changed)
   branches/release/libs/utility/swap/test/std_bitset.cpp (props changed)
   branches/release/libs/utility/value_init.htm (props changed)
   branches/release/libs/utility/value_init_test.cpp (props changed)
   branches/release/libs/uuid/ (props changed)
   branches/release/libs/wave/ (props changed)
   branches/release/rst.css (props changed)
   branches/release/status/ (props changed)
   branches/release/status/Jamfile.v2 (props changed)
   branches/release/status/explicit-failures-markup.xml (props changed)
   branches/release/tools/ (props changed)
   branches/release/tools/bcp/ (props changed)
   branches/release/tools/quickbook/ (props changed)
   branches/release/tools/regression/ (props changed)
   branches/release/tools/regression/src/library_status.cpp (props changed)
   branches/release/tools/wave/ (props changed)
Text files modified:
   branches/release/boost/variant/detail/apply_visitor_delayed.hpp | 4
   branches/release/boost/variant/detail/visitation_impl.hpp | 4
   branches/release/boost/variant/recursive_variant.hpp | 63 +++++++-----
   branches/release/boost/variant/variant.hpp | 52 ++++++++--
   branches/release/boost/variant/variant_fwd.hpp | 2
   branches/release/libs/variant/test/recursive_variant_test.cpp | 192 +++++++++++++++++++++++++++++++++++++--
   6 files changed, 262 insertions(+), 55 deletions(-)

Modified: branches/release/boost/variant/detail/apply_visitor_delayed.hpp
==============================================================================
--- branches/release/boost/variant/detail/apply_visitor_delayed.hpp (original)
+++ branches/release/boost/variant/detail/apply_visitor_delayed.hpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -58,7 +58,7 @@

     template <typename Visitable>
         BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type)
- operator()(Visitable& visitable)
+ operator()(Visitable& visitable) const
     {
         return apply_visitor(visitor_, visitable);
     }
@@ -67,7 +67,7 @@

     template <typename Visitable1, typename Visitable2>
         BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type)
- operator()(Visitable1& visitable1, Visitable2& visitable2)
+ operator()(Visitable1& visitable1, Visitable2& visitable2) const
     {
         return apply_visitor(visitor_, visitable1, visitable2);
     }

Modified: branches/release/boost/variant/detail/visitation_impl.hpp
==============================================================================
--- branches/release/boost/variant/detail/visitation_impl.hpp (original)
+++ branches/release/boost/variant/detail/visitation_impl.hpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -167,7 +167,7 @@
         , has_nothrow_copy<T>
>::type never_uses_backup;

- return visitation_impl_invoke_impl(
+ return (visitation_impl_invoke_impl)(
           internal_which, visitor, storage, t
         , never_uses_backup()
         );
@@ -246,7 +246,7 @@
     // ...applying the appropriate case:
# define BOOST_VARIANT_AUX_APPLY_VISITOR_STEP_CASE(z, N, _) \
     case (Which::value + (N)): \
- return visitation_impl_invoke( \
+ return (visitation_impl_invoke)( \
               internal_which, visitor, storage \
             , static_cast<BOOST_PP_CAT(T,N)*>(0) \
             , no_backup_flag, 1L \

Modified: branches/release/boost/variant/recursive_variant.hpp
==============================================================================
--- branches/release/boost/variant/recursive_variant.hpp (original)
+++ branches/release/boost/variant/recursive_variant.hpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -21,15 +21,15 @@

#include "boost/mpl/aux_/lambda_arity_param.hpp"

-#if !defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
-# include "boost/mpl/eval_if.hpp"
-# include "boost/mpl/identity.hpp"
-# include "boost/mpl/protect.hpp"
-# include "boost/mpl/transform.hpp"
-#else
-# include "boost/preprocessor/cat.hpp"
-# include "boost/preprocessor/repeat.hpp"
-#endif
+#include "boost/mpl/equal.hpp"
+#include "boost/mpl/eval_if.hpp"
+#include "boost/mpl/identity.hpp"
+#include "boost/mpl/if.hpp"
+#include "boost/mpl/protect.hpp"
+#include "boost/mpl/transform.hpp"
+#include "boost/type_traits/is_same.hpp"
+#include "boost/preprocessor/cat.hpp"
+#include "boost/preprocessor/repeat.hpp"

#include "boost/mpl/bool.hpp"
#include "boost/mpl/is_sequence.hpp"
@@ -74,34 +74,48 @@
       BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(typename Arity)
>
struct substitute<
- ::boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >
+ ::boost::variant<
+ ::boost::detail::variant::over_sequence< T0 >
+ , BOOST_VARIANT_ENUM_SHIFTED_PARAMS(T)
+ >
     , RecursiveVariant
     , ::boost::recursive_variant_
       BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(Arity)
>
{
+private:

-#if !defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
-
-private: // helpers, for metafunction result (below)
-
- typedef typename mpl::eval_if<
- ::boost::detail::variant::is_over_sequence<T0>
- , mpl::identity< T0 >
- , make_variant_list< BOOST_VARIANT_ENUM_PARAMS(T) >
- >::type initial_types;
+ typedef T0 initial_types;

     typedef typename mpl::transform<
           initial_types
         , mpl::protect< quoted_enable_recursive<RecursiveVariant,mpl::true_> >
>::type types;

-public: // metafunction result
-
- typedef ::boost::variant< types > type;
+public:

-#else // defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
+ typedef typename mpl::if_<
+ mpl::equal<initial_types, types, ::boost::is_same<mpl::_1, mpl::_2> >
+ , ::boost::variant<
+ ::boost::detail::variant::over_sequence< T0 >
+ , BOOST_VARIANT_ENUM_SHIFTED_PARAMS(T)
+ >
+ , ::boost::variant< over_sequence<types> >
+ >::type type;
+};

+template <
+ BOOST_VARIANT_ENUM_PARAMS(typename T)
+ , typename RecursiveVariant
+ BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(typename Arity)
+ >
+struct substitute<
+ ::boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >
+ , RecursiveVariant
+ , ::boost::recursive_variant_
+ BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(Arity)
+ >
+{
private: // helpers, for metafunction result (below)

     #define BOOST_VARIANT_AUX_ENABLE_RECURSIVE_TYPEDEFS(z,N,_) \
@@ -123,9 +137,6 @@
public: // metafunction result

     typedef ::boost::variant< BOOST_VARIANT_ENUM_PARAMS(wknd_T) > type;
-
-#endif // BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT workaround
-
};

#else // defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE)

Modified: branches/release/boost/variant/variant.hpp
==============================================================================
--- branches/release/boost/variant/variant.hpp (original)
+++ branches/release/boost/variant/variant.hpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -40,6 +40,7 @@
#include "boost/detail/reference_content.hpp"
#include "boost/aligned_storage.hpp"
#include "boost/blank.hpp"
+#include "boost/math/common_factor_ct.hpp"
#include "boost/static_assert.hpp"
#include "boost/preprocessor/cat.hpp"
#include "boost/preprocessor/repeat.hpp"
@@ -53,12 +54,14 @@
#include "boost/variant/recursive_wrapper_fwd.hpp"
#include "boost/variant/static_visitor.hpp"

-#include "boost/mpl/eval_if.hpp"
+#include "boost/mpl/assert.hpp"
#include "boost/mpl/begin_end.hpp"
#include "boost/mpl/bool.hpp"
-#include "boost/mpl/not.hpp"
+#include "boost/mpl/deref.hpp"
#include "boost/mpl/empty.hpp"
+#include "boost/mpl/eval_if.hpp"
#include "boost/mpl/find_if.hpp"
+#include "boost/mpl/fold.hpp"
#include "boost/mpl/front.hpp"
#include "boost/mpl/identity.hpp"
#include "boost/mpl/if.hpp"
@@ -69,7 +72,7 @@
#include "boost/mpl/logical.hpp"
#include "boost/mpl/max_element.hpp"
#include "boost/mpl/next.hpp"
-#include "boost/mpl/deref.hpp"
+#include "boost/mpl/not.hpp"
#include "boost/mpl/pair.hpp"
#include "boost/mpl/protect.hpp"
#include "boost/mpl/push_front.hpp"
@@ -77,7 +80,6 @@
#include "boost/mpl/size_t.hpp"
#include "boost/mpl/sizeof.hpp"
#include "boost/mpl/transform.hpp"
-#include "boost/mpl/assert.hpp"

///////////////////////////////////////////////////////////////////////////////
// Implementation Macros:
@@ -130,6 +132,19 @@

};

+struct add_alignment
+{
+ template <typename State, typename Item>
+ struct apply
+ : mpl::size_t<
+ ::boost::math::static_lcm<
+ BOOST_MPL_AUX_VALUE_WKND(State)::value
+ , ::boost::alignment_of<Item>::value
+ >::value
+ >
+ {};
+};
+
///////////////////////////////////////////////////////////////////////////////
// (detail) metafunction find_fallback_type
//
@@ -234,8 +249,10 @@

#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x0551))

- typedef typename max_value<
- types, alignment_of<mpl::_1>
+ typedef typename mpl::fold<
+ types
+ , mpl::size_t<1>
+ , add_alignment
>::type max_alignment;

#else // borland
@@ -550,7 +567,7 @@
// NOTE: This needs to be a friend of variant, as it needs access to
// indicate_which, indicate_backup_which, etc.
//
-template <typename Variant, typename RhsT>
+template <typename Variant>
class backup_assigner
     : public static_visitor<>
{
@@ -558,19 +575,28 @@

     Variant& lhs_;
     int rhs_which_;
- const RhsT& rhs_content_;
+ const void* rhs_content_;
+ void (*copy_rhs_content_)(void*, const void*);

public: // structors

+ template<class RhsT>
     backup_assigner(Variant& lhs, int rhs_which, const RhsT& rhs_content)
         : lhs_(lhs)
         , rhs_which_(rhs_which)
- , rhs_content_(rhs_content)
+ , rhs_content_(&rhs_content)
+ , copy_rhs_content_(&construct_impl<RhsT>)
     {
     }

private: // helpers, for visitor interface (below)

+ template<class RhsT>
+ static void construct_impl(void* addr, const void* obj)
+ {
+ new(addr) RhsT(*static_cast<const RhsT*>(obj));
+ }
+
     template <typename LhsT>
     void backup_assign_impl(
           LhsT& lhs_content
@@ -588,7 +614,7 @@
         try
         {
             // ...and attempt to copy rhs content into lhs storage:
- new(lhs_.storage_.address()) RhsT(rhs_content_);
+ copy_rhs_content_(lhs_.storage_.address(), rhs_content_);
         }
         catch (...)
         {
@@ -621,7 +647,7 @@
         try
         {
             // ...and attempt to copy rhs content into lhs storage:
- new(lhs_.storage_.address()) RhsT(rhs_content_);
+ copy_rhs_content_(lhs_.storage_.address(), rhs_content_);
         }
         catch (...)
         {
@@ -1431,7 +1457,7 @@
private: // helpers, for modifiers (below)

# if !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
- template <typename Variant, typename RhsT>
+ template <typename Variant>
     friend class detail::variant::backup_assigner;
# endif

@@ -1544,7 +1570,7 @@
             , mpl::false_// has_fallback_type
             )
         {
- detail::variant::backup_assigner<wknd_self_t, RhsT>
+ detail::variant::backup_assigner<wknd_self_t>
                 visitor(lhs_, rhs_which_, rhs_content);
             lhs_.internal_apply_visitor(visitor);
         }

Modified: branches/release/boost/variant/variant_fwd.hpp
==============================================================================
--- branches/release/boost/variant/variant_fwd.hpp (original)
+++ branches/release/boost/variant/variant_fwd.hpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -229,7 +229,7 @@
// Tag type indicates where recursive variant substitution should occur.
//
#if !defined(BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT)
- struct recursive_variant_;
+ struct recursive_variant_ {};
#else
typedef mpl::arg<1> recursive_variant_;
#endif

Modified: branches/release/libs/variant/test/recursive_variant_test.cpp
==============================================================================
--- branches/release/libs/variant/test/recursive_variant_test.cpp (original)
+++ branches/release/libs/variant/test/recursive_variant_test.cpp 2011-03-31 17:08:35 EDT (Thu, 31 Mar 2011)
@@ -12,10 +12,13 @@

#include "boost/test/minimal.hpp"
#include "boost/variant.hpp"
+#include "boost/mpl/vector.hpp"
+#include "boost/mpl/copy.hpp"

#include <iostream>
#include <sstream>
#include <vector>
+#include <map>

struct vector_printer
     : boost::static_visitor<std::string>
@@ -45,24 +48,191 @@
     }
};

-int test_main(int , char* [])
+void test_recursive_variant()
{
     typedef boost::make_recursive_variant<
           int
         , std::vector<boost::recursive_variant_>
- >::type var_t;
+ >::type var1_t;
+
+ std::vector<var1_t> vec1;
+ vec1.push_back(3);
+ vec1.push_back(5);
+ vec1.push_back(vec1);
+ vec1.push_back(7);
+
+ var1_t var1(vec1);
+ std::string result1( boost::apply_visitor( vector_printer(), var1 ) );
+
+ std::cout << "result1: " << result1 << '\n';
+ BOOST_CHECK(result1 == "( 3 5 ( 3 5 ) 7 ) ");
+
+ typedef boost::make_recursive_variant<
+ boost::variant<int, double>
+ , std::vector<boost::recursive_variant_>
+ >::type var2_t;
+
+ std::vector<var2_t> vec2;
+ vec2.push_back(boost::variant<int, double>(3));
+ vec2.push_back(boost::variant<int, double>(3.5));
+ vec2.push_back(vec2);
+ vec2.push_back(boost::variant<int, double>(7));
+
+ var2_t var2(vec2);
+ std::string result2( boost::apply_visitor( vector_printer(), var2 ) );
+
+ std::cout << "result2: " << result2 << '\n';
+ BOOST_CHECK(result2 == "( 3 3.5 ( 3 3.5 ) 7 ) ");
+
+ typedef boost::make_recursive_variant<
+ int
+ , std::vector<
+ boost::variant<
+ double
+ , std::vector<boost::recursive_variant_>
+ >
+ >
+ >::type var3_t;
+
+ typedef boost::variant<double, std::vector<var3_t> > var4_t;
+
+ std::vector<var3_t> vec3;
+ vec3.push_back(3);
+ vec3.push_back(5);
+ std::vector<var4_t> vec4;
+ vec4.push_back(3.5);
+ vec4.push_back(vec3);
+ vec3.push_back(vec4);
+ vec3.push_back(7);
+
+ var4_t var4(vec3);
+ std::string result3( boost::apply_visitor( vector_printer(), var4 ) );
+
+ std::cout << "result2: " << result3 << '\n';
+ BOOST_CHECK(result3 == "( 3 5 ( 3.5 ( 3 5 ) ) 7 ) ");

- std::vector<var_t> vec;
- vec.push_back(3);
- vec.push_back(5);
- vec.push_back(vec);
- vec.push_back(7);
+ typedef boost::make_recursive_variant<
+ double,
+ std::vector<var1_t>
+ >::type var5_t;
+
+ std::vector<var5_t> vec5;
+ vec5.push_back(3.5);
+ vec5.push_back(vec1);
+ vec5.push_back(17.25);
+
+ std::string result5( vector_printer()(vec5) );
+
+ std::cout << "result5: " << result5 << '\n';
+ BOOST_CHECK(result5 == "( 3.5 ( 3 5 ( 3 5 ) 7 ) 17.25 ) ");
+
+ typedef boost::make_recursive_variant<
+ int,
+ std::map<int, boost::recursive_variant_>
+ >::type var6_t;
+ var6_t var6;
+}

- var_t var(vec);
- std::string result( boost::apply_visitor( vector_printer(), var ) );
+void test_recursive_variant_over()
+{
+ typedef boost::make_recursive_variant_over<
+ boost::mpl::vector<
+ int
+ , std::vector<boost::recursive_variant_>
+ >
+ >::type var1_t;
+
+ std::vector<var1_t> vec1;
+ vec1.push_back(3);
+ vec1.push_back(5);
+ vec1.push_back(vec1);
+ vec1.push_back(7);
+
+ var1_t var1(vec1);
+ std::string result1( boost::apply_visitor( vector_printer(), var1 ) );
+
+ std::cout << "result1: " << result1 << '\n';
+ BOOST_CHECK(result1 == "( 3 5 ( 3 5 ) 7 ) ");
+
+ typedef boost::make_recursive_variant_over<
+ boost::mpl::vector<
+ boost::make_variant_over<boost::mpl::vector<int, double> >::type
+ , std::vector<boost::recursive_variant_>
+ >
+ >::type var2_t;
+
+ std::vector<var2_t> vec2;
+ vec2.push_back(boost::variant<int, double>(3));
+ vec2.push_back(boost::variant<int, double>(3.5));
+ vec2.push_back(vec2);
+ vec2.push_back(boost::variant<int, double>(7));
+
+ var2_t var2(vec2);
+ std::string result2( boost::apply_visitor( vector_printer(), var2 ) );
+
+ std::cout << "result2: " << result2 << '\n';
+ BOOST_CHECK(result2 == "( 3 3.5 ( 3 3.5 ) 7 ) ");
+
+ typedef boost::make_recursive_variant_over<
+ boost::mpl::vector<
+ int
+ , std::vector<
+ boost::make_variant_over<
+ boost::mpl::vector<
+ double
+ , std::vector<boost::recursive_variant_>
+ >
+ >::type
+ >
+ >
+ >::type var3_t;
+
+ typedef boost::make_variant_over<
+ boost::mpl::copy<
+ boost::mpl::vector<
+ double
+ , std::vector<var3_t>
+ >
+ >::type
+ >::type var4_t;
+
+ std::vector<var3_t> vec3;
+ vec3.push_back(3);
+ vec3.push_back(5);
+ std::vector<var4_t> vec4;
+ vec4.push_back(3.5);
+ vec4.push_back(vec3);
+ vec3.push_back(vec4);
+ vec3.push_back(7);
+
+ var4_t var3(vec3);
+ std::string result3( boost::apply_visitor( vector_printer(), var3 ) );
+
+ std::cout << "result2: " << result3 << '\n';
+ BOOST_CHECK(result3 == "( 3 5 ( 3.5 ( 3 5 ) ) 7 ) ");
+
+ typedef boost::make_recursive_variant_over<
+ boost::mpl::vector<
+ double
+ , std::vector<var1_t>
+ >
+ >::type var5_t;
+
+ std::vector<var5_t> vec5;
+ vec5.push_back(3.5);
+ vec5.push_back(vec1);
+ vec5.push_back(17.25);
+
+ std::string result5( vector_printer()(vec5) );
+
+ std::cout << "result5: " << result5 << '\n';
+ BOOST_CHECK(result5 == "( 3.5 ( 3 5 ( 3 5 ) 7 ) 17.25 ) ");
+}

- std::cout << "result: " << result << '\n';
- BOOST_CHECK(result == "( 3 5 ( 3 5 ) 7 ) ");
+int test_main(int , char* [])
+{
+ test_recursive_variant();
+ test_recursive_variant_over();

     return boost::exit_success;
}

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