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e739d54f86
Summary: This patch adds std::any by moving/adapting <experimental/any>. This patch also implements the std::any parts of p0032r3 (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0032r3.pdf) and LWG 2509 (http://cplusplus.github.io/LWG/lwg-defects.html#2509). I plan to push it in a day or two if there are no comments. Reviewers: mclow.lists, EricWF Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D22733 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@278310 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
2.1 KiB
C++
102 lines
2.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11
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// <experimental/any>
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// any::swap(any &) noexcept
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// Test swap(large, small) and swap(small, large)
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#include <experimental/any>
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#include <cassert>
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#include "experimental_any_helpers.h"
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using std::experimental::any;
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using std::experimental::any_cast;
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template <class LHS, class RHS>
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void test_swap() {
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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{
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any a1((LHS(1)));
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any a2(RHS{2});
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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a1.swap(a2);
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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assertContains<RHS>(a1, 2);
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assertContains<LHS>(a2, 1);
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}
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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assert(LHS::copied == 0);
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assert(RHS::copied == 0);
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}
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template <class Tp>
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void test_swap_empty() {
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assert(Tp::count == 0);
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{
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any a1((Tp(1)));
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any a2;
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assert(Tp::count == 1);
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a1.swap(a2);
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assert(Tp::count == 1);
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assertContains<Tp>(a2, 1);
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assertEmpty(a1);
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}
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assert(Tp::count == 0);
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{
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any a1((Tp(1)));
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any a2;
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assert(Tp::count == 1);
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a2.swap(a1);
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assert(Tp::count == 1);
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assertContains<Tp>(a2, 1);
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assertEmpty(a1);
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}
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assert(Tp::count == 0);
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assert(Tp::copied == 0);
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}
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void test_noexcept()
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{
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any a1;
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any a2;
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static_assert(
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noexcept(a1.swap(a2))
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, "any::swap(any&) must be noexcept"
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);
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}
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int main()
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{
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test_noexcept();
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test_swap_empty<small>();
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test_swap_empty<large>();
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test_swap<small1, small2>();
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test_swap<large1, large2>();
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test_swap<small, large>();
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test_swap<large, small>();
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}
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