73ef4ff3
 Hu Chunming
提交三方库
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// Copyright David Abrahams, Daniel Wallin 2005.
// 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)
#include <boost/parameter/config.hpp>
#if (BOOST_PARAMETER_MAX_ARITY < 4)
#error Define BOOST_PARAMETER_MAX_ARITY as 4 or greater.
#endif
#if !defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING) && \
(BOOST_PARAMETER_EXPONENTIAL_OVERLOAD_THRESHOLD_ARITY < 5)
#error Define BOOST_PARAMETER_EXPONENTIAL_OVERLOAD_THRESHOLD_ARITY \
as 5 or greater.
#endif
#include <boost/parameter/name.hpp>
namespace test {
BOOST_PARAMETER_NAME(w)
BOOST_PARAMETER_NAME(x)
BOOST_PARAMETER_NAME(y)
BOOST_PARAMETER_NAME(z)
} // namespace test
#if !defined(BOOST_PARAMETER_CAN_USE_MP11)
#include <boost/mpl/bool.hpp>
#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_convertible.hpp>
namespace test {
struct f_predicate
{
template <typename T, typename Args>
struct apply
: boost::mpl::if_<
boost::is_convertible<T,int>
, boost::mpl::true_
, boost::mpl::false_
>
{
};
};
} // namespace test
#endif // BOOST_PARAMETER_CAN_USE_MP11
#include <boost/parameter/parameters.hpp>
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
#include <boost/mp11/bind.hpp>
#include <type_traits>
#endif
namespace test {
struct f_parameters // vc6 is happier with inheritance than with a typedef
: boost::parameter::parameters<
boost::parameter::required<test::tag::w>
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
, boost::parameter::optional<
test::tag::x
, boost::mp11::mp_bind<std::is_convertible,boost::mp11::_1,int>
>
, boost::parameter::optional<
test::tag::y
, boost::mp11::mp_bind<std::is_convertible,boost::mp11::_1,int>
>
, boost::parameter::optional<
test::tag::z
, boost::mp11::mp_bind<std::is_convertible,boost::mp11::_1,int>
>
#else
, boost::parameter::optional<test::tag::x,test::f_predicate>
, boost::parameter::optional<test::tag::y,test::f_predicate>
, boost::parameter::optional<test::tag::z,test::f_predicate>
#endif // BOOST_PARAMETER_CAN_USE_MP11
>
{
};
} // namespace test
#include <boost/parameter/macros.hpp>
#include <boost/core/lightweight_test.hpp>
namespace test {
#if defined(BOOST_NO_VOID_RETURNS)
BOOST_PARAMETER_FUN(int, f, 1, 4, f_parameters)
#else
BOOST_PARAMETER_FUN(void, f, 1, 4, f_parameters)
#endif
{
BOOST_TEST_EQ(p[test::_w][0], p[test::_x | -1]);
BOOST_TEST_EQ(p[test::_w][1], p[test::_y | -2]);
BOOST_TEST_EQ(p[test::_w][2], p[test::_z | -3]);
#if defined(BOOST_NO_VOID_RETURNS)
return 0;
#endif
}
} // namespace test
int main()
{
int a[3];
a[0] = 1;
a[1] = 2;
a[2] = 3;
test::f(test::_x = 1, test::_y = 2, test::_z = 3, test::_w = a);
a[1] = -2;
a[2] = -3;
test::f(test::_x = 1, test::_w = a);
a[0] = -1;
a[1] = 2;
test::f(test::_y = 2, test::_w = a);
a[1] = -2;
a[2] = 3;
test::f(test::_z = 3, test::_w = a);
a[0] = 1;
test::f(test::_z = 3, test::_x = 1, test::_w = a);
return boost::report_errors();
}
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