mirror of
https://github.com/boostorg/spirit.git
synced 2026-01-19 04:42:11 +00:00
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2003 Joel de Guzman
|
|
|
|
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/detail/lightweight_test.hpp>
|
|
#include <boost/spirit/fusion/sequence/io.hpp>
|
|
#include <boost/spirit/fusion/sequence/single_view.hpp>
|
|
#include <boost/spirit/fusion/sequence/begin.hpp>
|
|
#include <boost/spirit/fusion/iterator/deref.hpp>
|
|
|
|
struct X {};
|
|
|
|
template <typename OS>
|
|
OS& operator<<(OS& os, X const&)
|
|
{
|
|
os << "<X-object>";
|
|
return os;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
using namespace boost::fusion;
|
|
|
|
std::cout << tuple_open('[');
|
|
std::cout << tuple_close(']');
|
|
std::cout << tuple_delimiter(", ");
|
|
|
|
/// Testing single_view
|
|
|
|
{
|
|
single_view<int> view1(3);
|
|
std::cout << view1 << std::endl;
|
|
|
|
// allow single_view element to be modified
|
|
*begin(view1) += 4;
|
|
std::cout << view1 << std::endl;
|
|
BOOST_TEST(*begin(view1) == 7);
|
|
BOOST_TEST(view1.val == 7);
|
|
|
|
single_view<X> view2;
|
|
std::cout << view2 << std::endl;
|
|
}
|
|
|
|
return boost::report_errors();
|
|
}
|
|
|