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Implement N3672, optional<T>.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@189772 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2013-09-02 20:30:37 +00:00
parent c64c980140
commit 01afa5c6e4
65 changed files with 4535 additions and 4 deletions
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37
test/utilities/optional/optional.nullops/eqaul.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <optional>
// template <class T> constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept;
// template <class T> constexpr bool operator==(nullopt_t, const optional<T>& x) noexcept;
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
static_assert ( std::nullopt == o1 , "" );
static_assert ( !(std::nullopt == o2), "" );
static_assert ( o1 == std::nullopt , "" );
static_assert ( !(o2 == std::nullopt), "" );
static_assert (noexcept(std::nullopt == o1), "");
static_assert (noexcept(o1 == std::nullopt), "");
}
#endif
}

37
test/utilities/optional/optional.nullops/less_than.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <optional>
// template <class T> constexpr bool operator<(const optional<T>& x, nullopt_t) noexcept;
// template <class T> constexpr bool operator<(nullopt_t, const optional<T>& x) noexcept;
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
static_assert ( !(std::nullopt < o1), "" );
static_assert ( std::nullopt < o2 , "" );
static_assert ( !(o1 < std::nullopt), "" );
static_assert ( !(o2 < std::nullopt), "" );
static_assert (noexcept(std::nullopt < o1), "");
static_assert (noexcept(o1 < std::nullopt), "");
}
#endif
}