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- // Copyright 2017 Peter Dimov.
- //
- // 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/mp11/detail/config.hpp>
- #if BOOST_MP11_MSVC
- # pragma warning( disable: 4503 ) // decorated name length exceeded
- # pragma warning( disable: 4307 ) // '*': integral constant overflow
- #endif
- #include <boost/mp11/algorithm.hpp>
- #include <boost/mp11/list.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <tuple>
- #include <cstdint>
- #if defined( BOOST_MP11_HAS_CXX14_CONSTEXPR )
- # define CONSTEXPR14 constexpr
- #else
- # define CONSTEXPR14
- #endif
- struct F
- {
- int s;
- CONSTEXPR14 void operator()( int ) { s = s * 10 + 1; }
- CONSTEXPR14 void operator()( short ) { s = s * 10 + 2; }
- CONSTEXPR14 void operator()( char ) { s = s * 10 + 3; }
- };
- struct G
- {
- std::uint32_t s;
- CONSTEXPR14 void operator()( std::uint32_t i ) { s = s * 3 + i; }
- };
- using boost::mp11::mp_list;
- using boost::mp11::mp_for_each;
- using boost::mp11::mp_iota_c;
- int main()
- {
- BOOST_TEST_EQ( (mp_for_each<mp_list<>>( 11 )), 11 );
- BOOST_TEST_EQ( (mp_for_each<mp_list<int>>( F{0} ).s), 1 );
- BOOST_TEST_EQ( (mp_for_each<mp_list<int, short>>( F{0} ).s), 12 );
- BOOST_TEST_EQ( (mp_for_each<mp_list<int, short, char>>( F{0} ).s), 123 );
- BOOST_TEST_EQ( (mp_for_each<std::tuple<>>( 11 )), 11 );
- BOOST_TEST_EQ( (mp_for_each<std::tuple<int>>( F{0} ).s), 1 );
- BOOST_TEST_EQ( (mp_for_each<std::tuple<int, short>>( F{0} ).s), 12 );
- BOOST_TEST_EQ( (mp_for_each<std::tuple<int, short, char>>( F{0} ).s), 123 );
- BOOST_TEST_EQ( (mp_for_each<std::pair<int, short>>( F{0} ).s), 12 );
- #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, <= 1800 )
- #else
- using L = mp_iota_c<1089>;
- std::uint32_t const R = 598075296;
- BOOST_TEST_EQ( (mp_for_each<L>( G{0} ).s), R );
- {
- G g{0};
- mp_for_each<L>( g );
- BOOST_TEST_EQ( g.s, R );
- }
- #endif
- #if defined( BOOST_MP11_NO_CONSTEXPR ) || ( !defined( __GLIBCXX__ ) && __cplusplus < 201400L )
- #else
- static_assert( mp_for_each<mp_list<>>( 11 ) == 11, "mp_for_each<mp_list<>>( 11 ) == 11" );
- static_assert( mp_for_each<std::tuple<>>( 12 ) == 12, "mp_for_each<std::tuple<>>( 12 ) == 12" );
- #endif
- #if defined( BOOST_MP11_HAS_CXX14_CONSTEXPR )
- constexpr auto r1 = mp_for_each<mp_list<int, short, char>>( F{0} );
- static_assert( r1.s == 123, "r1.s == 123" );
- constexpr auto r2 = mp_for_each<std::tuple<int, short, char>>( F{0} );
- static_assert( r2.s == 123, "r2.s == 123" );
- constexpr auto r3 = mp_for_each<std::pair<int, short>>( F{0} );
- static_assert( r3.s == 12, "r3.s == 12" );
- constexpr auto r4 = mp_for_each<L>( G{0} );
- static_assert( r4.s == R, "r4.s == R" );
- #endif
- return boost::report_errors();
- }
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