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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_lvalue_args.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/noncopyable.hpp>
#include <boost/blank.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/and.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/utility/result_of.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 = boost::blank, class RemoveNullary = mpl::false_>
struct test_func
: Base
{
template <typename Sig>
struct result;
template <class Self, class Seq>
struct result< Self(Seq &) >
: mpl::if_< mpl::and_< fusion::result_of::empty<Seq>, RemoveNullary >,
boost::blank, mpl::identity<long> >::type
{ };
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()(T & elem, long value) 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;
fusion::result_of::make_unfused_lvalue_args< test_func<> >::type unfused_func =
fusion::make_unfused_lvalue_args(f);
fusion::result_of::make_unfused_lvalue_args< boost::reference_wrapper<
test_func<noncopyable> > >::type unfused_func_ref =
fusion::make_unfused_lvalue_args(ref(f_nc));
fusion::result_of::make_unfused_lvalue_args< boost::reference_wrapper<
test_func<noncopyable> const> >::type unfused_func_c_ref =
fusion::make_unfused_lvalue_args(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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