1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03, c++11 11 12 // XFAIL: availability=macosx 13 14 // <experimental/any> 15 16 // any::swap(any &) noexcept 17 18 // Test swap(large, small) and swap(small, large) 19 20 #include <experimental/any> 21 #include <cassert> 22 23 #include "experimental_any_helpers.h" 24 25 using std::experimental::any; 26 using std::experimental::any_cast; 27 28 template <class LHS, class RHS> 29 void test_swap() { 30 assert(LHS::count == 0); 31 assert(RHS::count == 0); 32 { 33 any a1((LHS(1))); 34 any a2(RHS{2}); 35 assert(LHS::count == 1); 36 assert(RHS::count == 1); 37 38 a1.swap(a2); 39 40 assert(LHS::count == 1); 41 assert(RHS::count == 1); 42 43 assertContains<RHS>(a1, 2); 44 assertContains<LHS>(a2, 1); 45 } 46 assert(LHS::count == 0); 47 assert(RHS::count == 0); 48 assert(LHS::copied == 0); 49 assert(RHS::copied == 0); 50 } 51 52 template <class Tp> 53 void test_swap_empty() { 54 assert(Tp::count == 0); 55 { 56 any a1((Tp(1))); 57 any a2; 58 assert(Tp::count == 1); 59 60 a1.swap(a2); 61 62 assert(Tp::count == 1); 63 64 assertContains<Tp>(a2, 1); 65 assertEmpty(a1); 66 } 67 assert(Tp::count == 0); 68 { 69 any a1((Tp(1))); 70 any a2; 71 assert(Tp::count == 1); 72 73 a2.swap(a1); 74 75 assert(Tp::count == 1); 76 77 assertContains<Tp>(a2, 1); 78 assertEmpty(a1); 79 } 80 assert(Tp::count == 0); 81 assert(Tp::copied == 0); 82 } 83 84 void test_noexcept() 85 { 86 any a1; 87 any a2; 88 static_assert( 89 noexcept(a1.swap(a2)) 90 , "any::swap(any&) must be noexcept" 91 ); 92 } 93 94 int main() 95 { 96 test_noexcept(); 97 test_swap_empty<small>(); 98 test_swap_empty<large>(); 99 test_swap<small1, small2>(); 100 test_swap<large1, large2>(); 101 test_swap<small, large>(); 102 test_swap<large, small>(); 103 } 104
