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Move <optional> into include/experimental, and into the std::experimental namespace, since it's not part of C++14, but of an upcoming TS

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@194867 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2013-11-15 22:42:10 +00:00
parent ec5714f27a
commit 0cdbe60481
59 changed files with 523 additions and 409 deletions
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26
test/utilities/optional/optional.object/optional.object.assign/nullopt_t.pass.cpp
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@@ -11,12 +11,16 @@
// optional<T>& operator=(nullopt_t) noexcept;
#include <optional>
#include <experimental/optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
using std::experimental::optional;
using std::experimental::nullopt_t;
using std::experimental::nullopt;
struct X
{
static bool dtor_called;
@@ -31,30 +35,30 @@ int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt;
static_assert(noexcept(opt = std::nullopt) == true, "");
opt = std::nullopt;
optional<int> opt;
static_assert(noexcept(opt = nullopt) == true, "");
opt = nullopt;
assert(static_cast<bool>(opt) == false);
}
{
std::optional<int> opt(3);
opt = std::nullopt;
optional<int> opt(3);
opt = nullopt;
assert(static_cast<bool>(opt) == false);
}
{
std::optional<X> opt;
static_assert(noexcept(opt = std::nullopt) == true, "");
optional<X> opt;
static_assert(noexcept(opt = nullopt) == true, "");
assert(X::dtor_called == false);
opt = std::nullopt;
opt = nullopt;
assert(X::dtor_called == false);
assert(static_cast<bool>(opt) == false);
}
{
X x;
{
std::optional<X> opt(x);
optional<X> opt(x);
assert(X::dtor_called == false);
opt = std::nullopt;
opt = nullopt;
assert(X::dtor_called == true);
assert(static_cast<bool>(opt) == false);
}