73ef4ff3
 Hu Chunming
提交三方库
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// Copyright David Abrahams, Daniel Wallin 2003.
// Copyright Cromwell D. Enage 2017.
// 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.hpp>
#include <boost/bind/bind.hpp>
#include "basics.hpp"
namespace test {
// A separate function for getting the "value" key, so we can deduce F
// and use lazy_binding on it.
template <typename Params, typename F>
typename boost::parameter::lazy_binding<Params,tag::value,F>::type
extract_value(Params const& p, F const& f)
{
typename boost::parameter::lazy_binding<
Params,test::tag::value,F
>::type v = p[test::_value || f];
return v;
}
template <typename Params>
int f_impl(Params const& p)
{
typename boost::parameter::binding<Params,test::tag::name>::type
n = p[test::_name];
typename boost::parameter::binding<
Params,test::tag::value,double
>::type v = test::extract_value(p, boost::bind(&test::value_default));
typename boost::parameter::binding<Params,test::tag::index,int>::type
i = p[test::_index | 999];
p[test::_tester](n, v, i);
return 1;
}
#if defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING)
template <typename ...Args>
int f(Args const&... args)
{
return test::f_impl(test::f_parameters()(args...));
}
#else
template <typename A0, typename A1, typename A2, typename A3>
int f(A0 const& a0, A1 const& a1, A2 const& a2, A3 const& a3)
{
return test::f_impl(test::f_parameters()(a0, a1, a2, a3));
}
template <typename A0, typename A1, typename A2>
int f(A0 const& a0, A1 const& a1, A2 const& a2)
{
return test::f_impl(test::f_parameters()(a0, a1, a2));
}
template <typename A0, typename A1>
int f(A0 const& a0, A1 const& a1)
{
return test::f_impl(test::f_parameters()(a0, a1));
}
#endif // BOOST_PARAMETER_HAS_PERFECT_FORWARDING
template <typename Params>
int f_list(Params const& params)
{
return test::f_impl(params);
}
}
#include <boost/core/ref.hpp>
#include <boost/config/workaround.hpp>
#include <string>
int main()
{
test::f(
test::values(
std::string("foo")
, std::string("bar")
, std::string("baz")
)
, std::string("foo")
, std::string("bar")
, std::string("baz")
);
int x = 56;
test::f(
test::values(std::string("foo"), 666.222, 56)
, test::_index = boost::ref(x)
, test::_name = std::string("foo")
);
#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
x = 56;
test::f_list((
test::_tester = test::values(std::string("foo"), 666.222, 56)
, test::_index = boost::ref(x)
, test::_name = std::string("foo")
));
#endif // No comma operator available on Borland.
#if defined(LIBS_PARAMETER_TEST_COMPILE_FAILURE)
test::f(test::_index = 56, test::_name = 55); // won't compile
#endif
return boost::report_errors();
}
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