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// Copyright Daniel Wallin 2006. Use, modification and distribution is
// 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/parameter/preprocessor.hpp>
#include <boost/parameter/name.hpp>
#include <boost/type_traits/is_convertible.hpp>
#include <boost/tuple/tuple.hpp>
#include <string>
#include "basics.hpp"
#ifndef BOOST_NO_SFINAE
# include <boost/utility/enable_if.hpp>
#endif
namespace test {
namespace mpl = boost::mpl;
using mpl::_;
using boost::is_convertible;
BOOST_PARAMETER_NAME(expected)
BOOST_PARAMETER_NAME(x)
BOOST_PARAMETER_NAME(y)
BOOST_PARAMETER_NAME(z)
// Sun has problems with this syntax:
//
// template1< r* ( template2<x> ) >
//
// Workaround: factor template2<x> into a separate typedef
typedef is_convertible<_, int> predicate1;
typedef is_convertible<_, std::string> predicate2;
#if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x580))
BOOST_PARAMETER_FUNCTION((int), f, tag,
(required
(expected, *)
)
(deduced
(required
(x, *(predicate1))
(y, *(predicate2))
)
)
)
#else
BOOST_PARAMETER_FUNCTION((int), f, tag,
(required
(expected, *)
)
(deduced
(required
(x, *(is_convertible<_, int>))
(y, *(is_convertible<_, std::string>))
)
)
)
#endif
{
assert(equal(x, boost::tuples::get<0>(expected)));
assert(equal(y, boost::tuples::get<1>(expected)));
return 1;
}
struct X
{
X(int x = -1)
: x(x)
{}
bool operator==(X const& other) const
{
return x == other.x;
}
int x;
};
typedef is_convertible<_, X> predicate3; // SunPro workaround; see above
BOOST_PARAMETER_FUNCTION((int), g, tag,
(required
(expected, *)
)
(deduced
(required
(x, *(is_convertible<_, int>))
(y, *(is_convertible<_, std::string>))
)
(optional
(z, *(predicate3), X())
)
)
)
{
assert(equal(x, boost::tuples::get<0>(expected)));
assert(equal(y, boost::tuples::get<1>(expected)));
assert(equal(z, boost::tuples::get<2>(expected)));
return 1;
}
BOOST_PARAMETER_FUNCTION(
(int), sfinae, tag,
(deduced
(required
(x, *(predicate2))
)
)
)
{
return 1;
}
#ifndef BOOST_NO_SFINAE
// On compilers that actually support SFINAE, add another overload
// that is an equally good match and can only be in the overload set
// when the others are not. This tests that the SFINAE is actually
// working. On all other compilers we're just checking that
// everything about SFINAE-enabled code will work, except of course
// the SFINAE.
template<class A0>
typename boost::enable_if<boost::is_same<int,A0>, int>::type
sfinae(A0 const& a0)
{
return 0;
}
#endif
} // namespace test
using boost::make_tuple;
// make_tuple doesn't work with char arrays.
char const* str(char const* s)
{
return s;
}
int main()
{
using namespace test;
f(make_tuple(0, str("foo")), _x = 0, _y = "foo");
f(make_tuple(0, str("foo")), _x = 0, _y = "foo");
f(make_tuple(0, str("foo")), 0, "foo");
f(make_tuple(0, str("foo")), "foo", 0);
f(make_tuple(0, str("foo")), _y = "foo", 0);
f(make_tuple(0, str("foo")), _x = 0, "foo");
f(make_tuple(0, str("foo")), 0, _y = "foo");
g(make_tuple(0, str("foo"), X()), _x = 0, _y = "foo");
g(make_tuple(0, str("foo"), X()), 0, "foo");
g(make_tuple(0, str("foo"), X()), "foo", 0);
g(make_tuple(0, str("foo"), X()), _y = "foo", 0);
g(make_tuple(0, str("foo"), X()), _x = 0, "foo");
g(make_tuple(0, str("foo"), X()), 0, _y = "foo");
g(make_tuple(0, str("foo"), X(1)), 0, _y = "foo", X(1));
g(make_tuple(0, str("foo"), X(1)), X(1), 0, _y = "foo");
#ifndef BOOST_NO_SFINAE
assert(sfinae("foo") == 1);
assert(sfinae(0) == 0);
#endif
return 0;
}
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