ceph/src/boost/libs/variant2/test/variant_eq_ne_cx.cpp

   1
   2 // Copyright 2017, 2019 Peter Dimov
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //
   6 // See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt
   8
   9 #include <boost/variant2/variant.hpp>
  10 using namespace boost::variant2;
  11
  12 #if !defined(BOOST_MP11_HAS_CXX14_CONSTEXPR)
  13
  14 #include <boost/config/pragma_message.hpp>
  15
  16 BOOST_PRAGMA_MESSAGE("Skipping constexpr op==, op!= test because BOOST_MP11_HAS_CXX14_CONSTEXPR is not defined")
  17
  18 int main() {}
  19
  20 #else
  21
  22 struct X
  23 {
  24 };
  25
  26 inline constexpr bool operator==( X const&, X const& ) { return false; }
  27 inline constexpr bool operator!=( X const&, X const& ) { return false; }
  28
  29 #define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
  30
  31 int main()
  32 {
  33     {
  34         constexpr variant<int> v1, v2, v3( 1 ), v4( 1 );
  35
  36         STATIC_ASSERT( v1 == v2 );
  37         STATIC_ASSERT( !(v1 != v2) );
  38
  39         STATIC_ASSERT( v1 != v3 );
  40         STATIC_ASSERT( !(v1 == v3) );
  41
  42         STATIC_ASSERT( v3 == v4 );
  43         STATIC_ASSERT( !(v3 != v4) );
  44     }
  45
  46     {
  47         constexpr variant<int, float> v1, v2, v3( 1 ), v4( 1 ), v5( 3.14f ), v6( 3.14f );
  48
  49         STATIC_ASSERT( v1 == v2 );
  50         STATIC_ASSERT( !(v1 != v2) );
  51
  52         STATIC_ASSERT( v1 != v3 );
  53         STATIC_ASSERT( !(v1 == v3) );
  54
  55         STATIC_ASSERT( v3 == v4 );
  56         STATIC_ASSERT( !(v3 != v4) );
  57
  58         STATIC_ASSERT( v1 != v5 );
  59         STATIC_ASSERT( !(v1 == v5) );
  60
  61         STATIC_ASSERT( v3 != v5 );
  62         STATIC_ASSERT( !(v3 == v5) );
  63
  64         STATIC_ASSERT( v5 == v6 );
  65         STATIC_ASSERT( !(v5 != v6) );
  66     }
  67
  68     {
  69         constexpr variant<int, int, float> v1, v2, v3( in_place_index_t<1>{} ), v4( in_place_index_t<1>{} ), v5( 3.14f ), v6( 3.14f );
  70
  71         STATIC_ASSERT( v1 == v2 );
  72         STATIC_ASSERT( !(v1 != v2) );
  73
  74         STATIC_ASSERT( v1 != v3 );
  75         STATIC_ASSERT( !(v1 == v3) );
  76
  77         STATIC_ASSERT( v3 == v4 );
  78         STATIC_ASSERT( !(v3 != v4) );
  79
  80         STATIC_ASSERT( v1 != v5 );
  81         STATIC_ASSERT( !(v1 == v5) );
  82
  83         STATIC_ASSERT( v3 != v5 );
  84         STATIC_ASSERT( !(v3 == v5) );
  85
  86         STATIC_ASSERT( v5 == v6 );
  87         STATIC_ASSERT( !(v5 != v6) );
  88     }
  89
  90     {
  91         constexpr variant<X> v1, v2;
  92
  93         STATIC_ASSERT( !(v1 == v2) );
  94         STATIC_ASSERT( !(v1 != v2) );
  95     }
  96 }
  97
  98 #endif