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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// Throwing bad_any_cast is supported starting in macosx10.13
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
// <any>
// any::swap(any &) noexcept
// Test swap(large, small) and swap(small, large)
#include <any>
#include <cassert>
#include "test_macros.h"
#include "any_helpers.h"
using std::any;
using std::any_cast;
template <class LHS, class RHS>
void test_swap() {
assert(LHS::count == 0);
assert(RHS::count == 0);
{
any a1((LHS(1)));
any a2(RHS{2});
assert(LHS::count == 1);
assert(RHS::count == 1);
a1.swap(a2);
assert(LHS::count == 1);
assert(RHS::count == 1);
assertContains<RHS>(a1, 2);
assertContains<LHS>(a2, 1);
}
assert(LHS::count == 0);
assert(RHS::count == 0);
assert(LHS::copied == 0);
assert(RHS::copied == 0);
}
template <class Tp>
void test_swap_empty() {
assert(Tp::count == 0);
{
any a1((Tp(1)));
any a2;
assert(Tp::count == 1);
a1.swap(a2);
assert(Tp::count == 1);
assertContains<Tp>(a2, 1);
assertEmpty(a1);
}
assert(Tp::count == 0);
{
any a1((Tp(1)));
any a2;
assert(Tp::count == 1);
a2.swap(a1);
assert(Tp::count == 1);
assertContains<Tp>(a2, 1);
assertEmpty(a1);
}
assert(Tp::count == 0);
assert(Tp::copied == 0);
}
void test_noexcept()
{
any a1;
any a2;
static_assert(
noexcept(a1.swap(a2))
, "any::swap(any&) must be noexcept"
);
}
void test_self_swap() {
{
// empty
any a;
a.swap(a);
assertEmpty(a);
}
{ // small
using T = small;
any a{T{42}};
T::reset();
a.swap(a);
assertContains<T>(a, 42);
assert(T::count == 1);
assert(T::copied == 0);
LIBCPP_ASSERT(T::moved == 0);
}
assert(small::count == 0);
{ // large
using T = large;
any a{T{42}};
T::reset();
a.swap(a);
assertContains<T>(a, 42);
assert(T::count == 1);
assert(T::copied == 0);
LIBCPP_ASSERT(T::moved == 0);
}
assert(large::count == 0);
}
int main(int, char**)
{
test_noexcept();
test_swap_empty<small>();
test_swap_empty<large>();
test_swap<small1, small2>();
test_swap<large1, large2>();
test_swap<small, large>();
test_swap<large, small>();
test_self_swap();
return 0;
}
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