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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(any &&) noexcept;
#include <any>
#include <utility>
#include <type_traits>
#include <cassert>
#include "any_helpers.h"
#include "count_new.h"
#include "test_macros.h"
using std::any;
using std::any_cast;
// Moves are always noexcept. The throws_on_move object
// must be stored dynamically so the pointer is moved and
// not the stored object.
void test_move_does_not_throw()
{
#if !defined(TEST_HAS_NO_EXCEPTIONS)
assert(throws_on_move::count == 0);
{
throws_on_move v(42);
any a(v);
assert(throws_on_move::count == 2);
// No allocations should be performed after this point.
DisableAllocationGuard g; ((void)g);
try {
any const a2(std::move(a));
assertEmpty(a);
assertContains<throws_on_move>(a2, 42);
} catch (...) {
assert(false);
}
assert(throws_on_move::count == 1);
assertEmpty(a);
}
assert(throws_on_move::count == 0);
#endif
}
void test_move_empty() {
DisableAllocationGuard g; ((void)g); // no allocations should be performed.
any a1;
any a2(std::move(a1));
assertEmpty(a1);
assertEmpty(a2);
}
template <class Type>
void test_move() {
assert(Type::count == 0);
Type::reset();
{
any a((Type(42)));
assert(Type::count == 1);
assert(Type::copied == 0);
assert(Type::moved == 1);
// Moving should not perform allocations since it must be noexcept.
DisableAllocationGuard g; ((void)g);
any a2(std::move(a));
assert(Type::moved == 1 || Type::moved == 2); // zero or more move operations can be performed.
assert(Type::copied == 0); // no copies can be performed.
assert(Type::count == 1 + a.has_value());
assertContains<Type>(a2, 42);
LIBCPP_ASSERT(!a.has_value()); // Moves are always destructive.
if (a.has_value())
assertContains<Type>(a, 0);
}
assert(Type::count == 0);
}
int main(int, char**)
{
// noexcept test
{
static_assert(
std::is_nothrow_move_constructible<any>::value
, "any must be nothrow move constructible"
);
}
test_move<small>();
test_move<large>();
test_move_empty();
test_move_does_not_throw();
return 0;
}
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