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Clang format, support cohabitation with tl::optional

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This commit is contained in:
Simon Brand
2017-11-16 11:18:02 +00:00
parent 92e5c7fac2
commit e65b3d6fe4
1 changed files with 35 additions and 27 deletions
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62
expected.hpp
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@@ -69,8 +69,7 @@
namespace tl {
template <class T, class E> class expected;
#ifndef TL_IN_PLACE_MONOSTATE_DEFINED
#define TL_IN_PLACE_MONOSTATE_DEFINED
#ifndef TL_OPTIONAL_EXPECTED_MUTEX
/// \brief Used to represent an expected with no data
class monostate {};
@@ -157,9 +156,16 @@ static constexpr unexpect_t unexpect{};
/// \exclude
namespace detail {
#ifndef TL_OPTIONAL_EXPECTED_MUTEX
// C++14-style aliases for brevity
template <class T> using remove_const_t = typename std::remove_const<T>::type;
template <class T>
using remove_reference_t = typename std::remove_reference<T>::type;
template <class T> using decay_t = typename std::decay<T>::type;
template <bool E, class T = void>
using enable_if_t = typename std::enable_if<E, T>::type;
template <class T> using decay_t = typename std::decay<T>::type;
template <bool B, class T, class F>
using conditional_t = typename std::conditional<B, T, F>::type;
// std::conjunction from C++17
template <class...> struct conjunction : std::true_type {};
@@ -168,12 +174,6 @@ template <class B, class... Bs>
struct conjunction<B, Bs...>
: std::conditional<bool(B::value), conjunction<Bs...>, B>::type {};
// Trait for checking if a type is a tl::expected
template <class T> struct is_expected_impl : std::false_type {};
template <class T, class E>
struct is_expected_impl<expected<T, E>> : std::true_type {};
template <class T> using is_expected = is_expected_impl<decay_t<T>>;
// std::invoke from C++17
// https://stackoverflow.com/questions/38288042/c11-14-invoke-workaround
template <typename Fn, typename... Args,
@@ -208,16 +208,23 @@ using invoke_result = invoke_result_impl<F, void, Us...>;
template <class F, class... Us>
using invoke_result_t = typename invoke_result<F, Us...>::type;
#endif
// Trait for checking if a type is a tl::expected
template <class T> struct is_expected_impl : std::false_type {};
template <class T, class E>
struct is_expected_impl<expected<T, E>> : std::true_type {};
template <class T> using is_expected = is_expected_impl<decay_t<T>>;
template <class T, class E, class U>
using enable_forward_value = detail::enable_if_t<
using expected_enable_forward_value = detail::enable_if_t<
std::is_constructible<T, U &&>::value &&
!std::is_same<detail::decay_t<U>, in_place_t>::value &&
!std::is_same<expected<T, E>, detail::decay_t<U>>::value &&
!std::is_same<unexpected<E>, detail::decay_t<U>>::value>;
template <class T, class E, class U, class G, class UR, class GR>
using enable_from_other = detail::enable_if_t<
using expected_enable_from_other = detail::enable_if_t<
std::is_constructible<T, UR>::value &&
std::is_constructible<T, GR>::value &&
!std::is_constructible<T, expected<U, G> &>::value &&
@@ -1260,12 +1267,12 @@ public:
: impl_base(unexpect, il, std::forward<Args>(args)...),
ctor_base(detail::default_constructor_tag{}) {}
template <
class U, class G,
detail::enable_if_t<!(std::is_convertible<U const &, T>::value &&
std::is_convertible<G const &, E>::value)> * =
nullptr,
detail::enable_from_other<T, E, U, G, const U &, const G &> * = nullptr>
template <class U, class G,
detail::enable_if_t<!(std::is_convertible<U const &, T>::value &&
std::is_convertible<G const &, E>::value)> * =
nullptr,
detail::expected_enable_from_other<T, E, U, G, const U &, const G &>
* = nullptr>
explicit TL_EXPECTED_11_CONSTEXPR expected(const expected<U, G> &rhs)
: ctor_base(detail::default_constructor_tag{}) {
if (rhs.has_value()) {
@@ -1276,12 +1283,12 @@ public:
}
/// \exclude
template <
class U, class G,
detail::enable_if_t<(std::is_convertible<U const &, T>::value &&
std::is_convertible<G const &, E>::value)> * =
nullptr,
detail::enable_from_other<T, E, U, G, const U &, const G &> * = nullptr>
template <class U, class G,
detail::enable_if_t<(std::is_convertible<U const &, T>::value &&
std::is_convertible<G const &, E>::value)> * =
nullptr,
detail::expected_enable_from_other<T, E, U, G, const U &, const G &>
* = nullptr>
TL_EXPECTED_11_CONSTEXPR expected(const expected<U, G> &rhs)
: ctor_base(detail::default_constructor_tag{}) {
if (rhs.has_value()) {
@@ -1295,7 +1302,7 @@ public:
class U, class G,
detail::enable_if_t<!(std::is_convertible<U &&, T>::value &&
std::is_convertible<G &&, E>::value)> * = nullptr,
detail::enable_from_other<T, E, U, G, U &&, G &&> * = nullptr>
detail::expected_enable_from_other<T, E, U, G, U &&, G &&> * = nullptr>
explicit TL_EXPECTED_11_CONSTEXPR expected(expected<U, G> &&rhs)
: ctor_base(detail::default_constructor_tag{}) {
if (rhs.has_value()) {
@@ -1310,7 +1317,7 @@ public:
class U, class G,
detail::enable_if_t<(std::is_convertible<U &&, T>::value &&
std::is_convertible<G &&, E>::value)> * = nullptr,
detail::enable_from_other<T, E, U, G, U &&, G &&> * = nullptr>
detail::expected_enable_from_other<T, E, U, G, U &&, G &&> * = nullptr>
TL_EXPECTED_11_CONSTEXPR expected(expected<U, G> &&rhs)
: ctor_base(detail::default_constructor_tag{}) {
if (rhs.has_value()) {
@@ -1323,14 +1330,14 @@ public:
template <
class U = T,
detail::enable_if_t<!std::is_convertible<U &&, T>::value> * = nullptr,
detail::enable_forward_value<T, E, U> * = nullptr>
detail::expected_enable_forward_value<T, E, U> * = nullptr>
explicit constexpr expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
/// \exclude
template <
class U = T,
detail::enable_if_t<std::is_convertible<U &&, T>::value> * = nullptr,
detail::enable_forward_value<T, E, U> * = nullptr>
detail::expected_enable_forward_value<T, E, U> * = nullptr>
constexpr expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
template <
@@ -1816,4 +1823,5 @@ void swap(expected<T, E> &lhs,
}
} // namespace tl
#define TL_OPTIONAL_EXPECTED_MUTEX
#endif