| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <array> |
| |
| // void swap(array& a); |
| // namespace std { void swap(array<T, N> &x, array<T, N> &y); |
| |
| #include <cassert> |
| #include <array> |
| |
| #include "test_macros.h" |
| |
| // std::array is explicitly allowed to be initialized with A a = { init-list };. |
| // Disable the missing braces warning for this reason. |
| #include "disable_missing_braces_warning.h" |
| |
| struct NonSwappable { |
| NonSwappable() {} |
| private: |
| NonSwappable(NonSwappable const&); |
| NonSwappable& operator=(NonSwappable const&); |
| }; |
| |
| int main() |
| { |
| { |
| typedef double T; |
| typedef std::array<T, 3> C; |
| C c1 = {1, 2, 3.5}; |
| C c2 = {4, 5, 6.5}; |
| c1.swap(c2); |
| assert(c1.size() == 3); |
| assert(c1[0] == 4); |
| assert(c1[1] == 5); |
| assert(c1[2] == 6.5); |
| assert(c2.size() == 3); |
| assert(c2[0] == 1); |
| assert(c2[1] == 2); |
| assert(c2[2] == 3.5); |
| } |
| { |
| typedef double T; |
| typedef std::array<T, 3> C; |
| C c1 = {1, 2, 3.5}; |
| C c2 = {4, 5, 6.5}; |
| std::swap(c1, c2); |
| assert(c1.size() == 3); |
| assert(c1[0] == 4); |
| assert(c1[1] == 5); |
| assert(c1[2] == 6.5); |
| assert(c2.size() == 3); |
| assert(c2[0] == 1); |
| assert(c2[1] == 2); |
| assert(c2[2] == 3.5); |
| } |
| |
| { |
| typedef double T; |
| typedef std::array<T, 0> C; |
| C c1 = {}; |
| C c2 = {}; |
| c1.swap(c2); |
| assert(c1.size() == 0); |
| assert(c2.size() == 0); |
| } |
| { |
| typedef double T; |
| typedef std::array<T, 0> C; |
| C c1 = {}; |
| C c2 = {}; |
| std::swap(c1, c2); |
| assert(c1.size() == 0); |
| assert(c2.size() == 0); |
| } |
| { |
| typedef NonSwappable T; |
| typedef std::array<T, 0> C0; |
| C0 l = {}; |
| C0 r = {}; |
| l.swap(r); |
| #if TEST_STD_VER >= 11 |
| static_assert(noexcept(l.swap(r)), ""); |
| #endif |
| } |
| |
| } |