fusion/test/algorithm/pop_back.cpp
2015-09-09 18:05:04 +09:00

106 lines
3.1 KiB
C++

/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
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/detail/lightweight_test.hpp>
#include <boost/fusion/container/vector/vector.hpp>
#include <boost/fusion/container/list/list.hpp>
#include <boost/fusion/adapted/mpl.hpp>
#include <boost/fusion/sequence/io/out.hpp>
#include <boost/fusion/sequence/comparison/equal_to.hpp>
#include <boost/fusion/container/generation/make_vector.hpp>
#include <boost/fusion/container/generation/make_list.hpp>
#include <boost/fusion/algorithm/transformation/pop_back.hpp>
#include <boost/fusion/algorithm/transformation/push_back.hpp>
#include <boost/fusion/algorithm/query/find.hpp>
#include <boost/fusion/include/back.hpp>
#include <boost/fusion/include/array.hpp>
#include <boost/array.hpp>
#include <boost/mpl/vector_c.hpp>
int
main()
{
using namespace boost::fusion;
std::cout << tuple_open('[');
std::cout << tuple_close(']');
std::cout << tuple_delimiter(", ");
/// Testing pop_back
{
char const* s = "Ruby";
typedef vector<int, char, double, char const*> vector_type;
vector_type t1(1, 'x', 3.3, s);
{
std::cout << pop_back(t1) << std::endl;
BOOST_TEST((pop_back(t1) == make_vector(1, 'x', 3.3)));
}
}
{
typedef boost::mpl::vector_c<int, 1, 2, 3, 4, 5> mpl_vec;
std::cout << boost::fusion::pop_back(mpl_vec()) << std::endl;
BOOST_TEST((boost::fusion::pop_back(mpl_vec()) == make_vector(1, 2, 3, 4)));
}
{
list<int, int> l(1, 2);
std::cout << pop_back(l) << std::endl;
BOOST_TEST((pop_back(l) == make_list(1)));
}
{ // make sure empty sequences are OK
list<int> l(1);
std::cout << pop_back(l) << std::endl;
BOOST_TEST((pop_back(l) == make_list()));
}
{
single_view<int> sv(1);
std::cout << pop_back(sv) << std::endl;
// Compile check only
(void)(begin(pop_back(sv)) == end(sv));
(void)(end(pop_back(sv)) == begin(sv));
}
// $$$ JDG: TODO add compile fail facility $$$
//~ { // compile fail check (Disabled for now)
//~ list<> l;
//~ std::cout << pop_back(l) << std::endl;
//~ }
#ifndef BOOST_NO_CXX11_AUTO_DECLARATIONS
{
auto vec = make_vector(1, 3.14, "hello");
// Compile check only
auto popv = pop_back(vec);
std::cout << popv << std::endl;
auto push = push_back(vec, 42);
auto pop = pop_back(vec);
auto i1 = find<int>(popv);
auto i2 = find<double>(pop);
(void)push;
BOOST_TEST(i1 != end(pop));
BOOST_TEST(i2 != end(pop));
BOOST_TEST(i1 != i2);
}
#endif
{
boost::array<std::size_t, 2> a = {{ 10, 50 }};
BOOST_TEST(back(pop_back(a)) == 10);
}
return boost::report_errors();
}