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- /*=============================================================================
- Copyright (c) 2006-2007 Tobias Schwinger
-
- Use modification and distribution are subject to 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).
- ==============================================================================*/
- #include <boost/fusion/functional/generation/make_unfused.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/noncopyable.hpp>
- #include <boost/mpl/empty_base.hpp>
- #include <boost/mpl/if.hpp>
- #include <boost/mpl/and.hpp>
- #include <boost/mpl/not.hpp>
- #include <boost/mpl/bool.hpp>
- #include <boost/utility/result_of.hpp>
- #include <boost/core/enable_if.hpp>
- #include <boost/fusion/sequence/intrinsic/empty.hpp>
- #include <boost/fusion/algorithm/iteration/fold.hpp>
- #include <boost/ref.hpp>
- namespace fusion = boost::fusion;
- namespace mpl = boost::mpl;
- using boost::noncopyable;
- typedef mpl::true_ no_nullary_call;
- using boost::ref;
- using boost::cref;
- template <class Base = mpl::empty_base, class RemoveNullary = mpl::false_>
- struct test_func
- : Base
- {
- template <typename Sig>
- struct result;
- template <class Self, class Seq>
- struct result< Self(Seq &) >
- : boost::enable_if<
- mpl::not_<mpl::and_<boost::fusion::result_of::empty<Seq>, RemoveNullary> >,
- long>
- { };
- template <typename Seq>
- long operator()(Seq const & seq) const
- {
- long state = 0;
- return fusion::fold(seq, state, fold_op());
- }
- template < typename Seq >
- long operator()(Seq const & seq)
- {
- long state = 100;
- return fusion::fold(seq, state, fold_op());
- }
- private:
- struct fold_op
- {
- typedef long result_type;
- template <typename T>
- long operator()(long value, T & elem) const
- {
- elem += sizeof(T);
- return value + elem;
- }
- };
- };
- template <typename T>
- inline T const & const_(T const & t)
- {
- return t;
- }
- int main()
- {
- test_func<> f;
- test_func<noncopyable> f_nc;
- boost::fusion::result_of::make_unfused< test_func<> >::type unfused_func =
- fusion::make_unfused(f);
- boost::fusion::result_of::make_unfused< boost::reference_wrapper<
- test_func<noncopyable> > >::type unfused_func_ref =
- fusion::make_unfused(ref(f_nc));
- boost::fusion::result_of::make_unfused< boost::reference_wrapper<
- test_func<noncopyable> const> >::type unfused_func_c_ref =
- fusion::make_unfused(cref(f_nc));
- BOOST_TEST(unfused_func() == 100);
- BOOST_TEST(const_(unfused_func)() == 0);
- BOOST_TEST(unfused_func_ref() == 100);
- BOOST_TEST(unfused_func_c_ref() == 0);
- long lv1 = 2; int lv2 = 3l; char lv3 = '\007';
- long expected;
- expected = lv1+sizeof(lv1) + lv2+sizeof(lv2) + lv3+sizeof(lv3);
- BOOST_TEST(unfused_func(lv1,lv2,lv3) == 100 + expected);
- BOOST_TEST(lv1 == 2+1*sizeof(lv1) && lv2 == 3+1*sizeof(lv2) && lv3 == 7+1*sizeof(lv3));
- expected = lv1+sizeof(lv1) + lv2+sizeof(lv2) + lv3+sizeof(lv3);
- BOOST_TEST(const_(unfused_func)(lv1,lv2,lv3) == 0 + expected);
- BOOST_TEST(lv1 == 2+2*sizeof(lv1) && lv2 == 3+2*sizeof(lv2) && lv3 == 7+2*sizeof(lv3));
- expected = lv1+sizeof(lv1) + lv2+sizeof(lv2) + lv3+sizeof(lv3);
- BOOST_TEST(unfused_func_ref(lv1,lv2,lv3) == 100 + expected);
- BOOST_TEST(lv1 == 2+3*sizeof(lv1) && lv2 == 3+3*sizeof(lv2) && lv3 == 7+3*sizeof(lv3));
- expected = lv1+sizeof(lv1) + lv2+sizeof(lv2) + lv3+sizeof(lv3);
- BOOST_TEST(unfused_func_c_ref(lv1,lv2,lv3) == 0 + expected);
- BOOST_TEST(lv1 == 2+4*sizeof(lv1) && lv2 == 3+4*sizeof(lv2) && lv3 == 7+4*sizeof(lv3));
- return boost::report_errors();
- }
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