ceph/src/boost/libs/bind/test/std_placeholders_test.cpp

   1 // Copyright 2021 Peter Dimov
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // https://www.boost.org/LICENSE_1_0.txt
   4
   5 #include <boost/bind/bind.hpp>
   6 #include <boost/core/lightweight_test.hpp>
   7 #include <functional>
   8 #include <boost/config.hpp>
   9 #include <boost/config/pragma_message.hpp>
  10
  11 #if defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
  12
  13 BOOST_PRAGMA_MESSAGE( "Skipping test due to BOOST_NO_CXX11_HDR_FUNCTIONAL being defined" )
  14 int main() {}
  15
  16 #elif defined(BOOST_NO_CXX11_DECLTYPE)
  17
  18 BOOST_PRAGMA_MESSAGE( "Skipping test due to BOOST_NO_CXX11_DECLTYPE being defined" )
  19 int main() {}
  20
  21 #elif defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
  22
  23 BOOST_PRAGMA_MESSAGE( "Skipping test due to BOOST_NO_CXX11_HDR_TYPE_TRAITS being defined" )
  24 int main() {}
  25
  26 #else
  27
  28 int f( int x )
  29 {
  30     return -x;
  31 }
  32
  33 int main()
  34 {
  35     using namespace std::placeholders;
  36
  37     BOOST_TEST_EQ( boost::bind( f, _1 )( 1 ), -1 );
  38     BOOST_TEST_EQ( boost::bind( f, _2 )( 1, 2 ), -2 );
  39     BOOST_TEST_EQ( boost::bind( f, _3 )( 1, 2, 3 ), -3 );
  40     BOOST_TEST_EQ( boost::bind( f, _4 )( 1, 2, 3, 4 ), -4 );
  41     BOOST_TEST_EQ( boost::bind( f, _5 )( 1, 2, 3, 4, 5 ), -5 );
  42     BOOST_TEST_EQ( boost::bind( f, _6 )( 1, 2, 3, 4, 5, 6 ), -6 );
  43     BOOST_TEST_EQ( boost::bind( f, _7 )( 1, 2, 3, 4, 5, 6, 7 ), -7 );
  44     BOOST_TEST_EQ( boost::bind( f, _8 )( 1, 2, 3, 4, 5, 6, 7, 8 ), -8 );
  45     BOOST_TEST_EQ( boost::bind( f, _9 )( 1, 2, 3, 4, 5, 6, 7, 8, 9 ), -9 );
  46
  47     return boost::report_errors();
  48 }
  49
  50 #endif