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add SFINAE: tuple flexibly construction

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This commit is contained in:
bolero-MURAKAMI 2013-03-29 19:19:40 +09:00
parent f905d1f02a
commit a1c119a9bb
3 changed files with 107 additions and 33 deletions
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23
libs/tuple/test/tuple.cpp
View file

@ -34,6 +34,12 @@ namespace testspr {
TESTSPR_BOTH_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_BOTH_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
SPROUT_STATIC_CONSTEXPR auto tup3 = sprout::tuples::tuple<int, double>(sprout::tuples::tuple<long, float>(1l, 1.0f));
TESTSPR_BOTH_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_BOTH_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
SPROUT_STATIC_CONSTEXPR auto tup3 = sprout::tuples::tuple<int, double>(sprout::tuples::flexibly_construct, 1l);
TESTSPR_BOTH_ASSERT(sprout::tuples::get<0>(tup3) == 1);
@ -50,11 +56,6 @@ namespace testspr {
TESTSPR_BOTH_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
SPROUT_STATIC_CONSTEXPR auto tup3 = sprout::tuples::tuple<int, double>(sprout::tuples::tuple<long, float>(1l, 1.0f));
TESTSPR_BOTH_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_BOTH_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
SPROUT_STATIC_CONSTEXPR auto tup3 = sprout::tuples::tuple<int, double>(sprout::tuples::flexibly_construct, sprout::tuples::tuple<long>(1l));
TESTSPR_BOTH_ASSERT(sprout::tuples::get<0>(tup3) == 1);
@ -78,24 +79,12 @@ namespace testspr {
TESTSPR_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
auto tup3 = tup2;
tup3 = sprout::tuples::tuple<long>(1l);
TESTSPR_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_ASSERT(sprout::tuples::get<1>(tup3) == 0.0);
}
{
auto tup3 = tup2;
tup3 = sprout::tuples::tuple<long, float>(1l, 1.0f);
TESTSPR_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
{
auto tup3 = tup2;
tup3 = sprout::tuples::tuple<long, float, char>(1l, 1.0f, '-');
TESTSPR_ASSERT(sprout::tuples::get<0>(tup3) == 1);
TESTSPR_ASSERT(sprout::tuples::get<1>(tup3) == 1.0);
}
// swap
{

39
sprout/tuple/tuple/tuple.hpp
View file

@ -69,32 +69,47 @@ namespace sprout {
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::pair<UTypes...>&& t)
: impl_type(sprout::move(t.first), sprout::move(t.second))
: impl_type(sprout::forward<typename sprout::pair<UTypes...>::first_type>(t.first), sprout::forward<typename sprout::pair<UTypes...>::second_type>(t.second))
{}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::tuples::flexibly_construct_t, UTypes&&... elements)
: impl_type(sprout::forward<UTypes>(elements)...)
{}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::tuples::flexibly_construct_t, sprout::tuples::tuple<UTypes...> const& t)
: impl_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...> const&>(t))
{}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::tuples::flexibly_construct_t, sprout::tuples::tuple<UTypes...>&& t)
: impl_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...>&&>(t))
{}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::tuples::flexibly_construct_t, sprout::pair<UTypes...> const& t)
: impl_type(t.first, t.second)
{}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types...>::tuple(sprout::tuples::flexibly_construct_t, sprout::pair<UTypes...>&& t)
: impl_type(sprout::move(t.first), sprout::move(t.second))
: impl_type(sprout::forward<typename sprout::pair<UTypes...>::first_type>(t.first), sprout::forward<typename sprout::pair<UTypes...>::second_type>(t.second))
{}
// tuple assignment
template<typename... Types>
@ -110,13 +125,19 @@ namespace sprout {
return *this;
}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
sprout::tuples::tuple<Types...>& sprout::tuples::tuple<Types...>::operator=(sprout::tuples::tuple<UTypes...> const& rhs) {
static_cast<impl_type&>(*this) = rhs;
return *this;
}
template<typename... Types>
template<typename... UTypes>
template<
typename... UTypes,
typename
>
sprout::tuples::tuple<Types...>& sprout::tuples::tuple<Types...>::operator=(sprout::tuples::tuple<UTypes...>&& rhs) {
static_cast<impl_type&>(*this) = sprout::move(rhs);
return *this;

78
sprout/tuple/tuple/tuple_decl.hpp
View file

@ -6,9 +6,11 @@
#include <type_traits>
#include <tuple>
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/utility/move.hpp>
#include <sprout/utility/swap.hpp>
#include <sprout/utility/pack.hpp>
#include <sprout/utility/pair/pair_fwd.hpp>
#include <sprout/type_traits/is_convert_constructible.hpp>
#include <sprout/tpp/algorithm/all_of.hpp>
@ -241,12 +243,39 @@ namespace sprout {
{
private:
typedef sprout::tuples::detail::tuple_impl<0, Types...> impl_type;
private:
template<typename TndexTuple, typename... Utypes>
struct is_flexibly_constructible_impl;
template<sprout::index_t... Indexes, typename... Utypes>
struct is_flexibly_constructible_impl<sprout::index_tuple<Indexes...>, Utypes...>
: public sprout::tpp::all_of<
sprout::is_convert_constructible<
typename sprout::tppack_at<Indexes, Types...>::type,
typename sprout::tppack_at<Indexes, Utypes...>::type
>...
>
{};
public:
struct has_nothrow_swap
: public sprout::tpp::all_of_c<
SPROUT_NOEXCEPT_EXPR_OR_DEFAULT(sprout::swap(std::declval<Types&>(), std::declval<Types&>()), false)...
>
{};
template<typename... UTypes>
struct is_flexibly_constructible
: public is_flexibly_constructible_impl<
typename sprout::index_range<0, (sizeof...(UTypes) < sizeof...(Types) ? sizeof...(UTypes) : sizeof...(Types))>::type,
UTypes...
>
{};
template<typename... UTypes>
struct is_rvref_flexibly_constructible
: public is_flexibly_constructible<UTypes&&...>
{};
template<typename... UTypes>
struct is_clvref_flexibly_constructible
: public is_flexibly_constructible<UTypes const&...>
{};
public:
// tuple construction
SPROUT_CONSTEXPR tuple();
@ -288,23 +317,58 @@ namespace sprout {
>::type
>
SPROUT_CONSTEXPR tuple(sprout::pair<UTypes...>&& t);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
is_rvref_flexibly_constructible<UTypes...>::value
>::type
>
explicit SPROUT_CONSTEXPR tuple(sprout::tuples::flexibly_construct_t, UTypes&&... elements);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
is_clvref_flexibly_constructible<UTypes...>::value
>::type
>
SPROUT_CONSTEXPR tuple(sprout::tuples::flexibly_construct_t, sprout::tuples::tuple<UTypes...> const& t);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
is_rvref_flexibly_constructible<UTypes...>::value
>::type
>
SPROUT_CONSTEXPR tuple(sprout::tuples::flexibly_construct_t, sprout::tuples::tuple<UTypes...>&& t);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
is_clvref_flexibly_constructible<UTypes...>::value
>::type
>
SPROUT_CONSTEXPR tuple(sprout::tuples::flexibly_construct_t, sprout::pair<UTypes...> const& t);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
is_rvref_flexibly_constructible<UTypes...>::value
>::type
>
SPROUT_CONSTEXPR tuple(sprout::tuples::flexibly_construct_t, sprout::pair<UTypes...>&& t);
// tuple assignment
tuple& operator=(tuple const& rhs);
tuple& operator=(tuple&& rhs)
SPROUT_NOEXCEPT_EXPR(sprout::tpp::all_of<std::is_nothrow_move_assignable<Types>...>::value);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
sizeof...(Types) == sizeof...(UTypes) && sprout::tpp::all_of<std::is_assignable<Types&, UTypes const&>...>::value
>::type
>
tuple& operator=(sprout::tuples::tuple<UTypes...> const& rhs);
template<typename... UTypes>
template<
typename... UTypes,
typename = typename std::enable_if<
sizeof...(Types) == sizeof...(UTypes) && sprout::tpp::all_of<std::is_assignable<Types&, UTypes&&>...>::value
>::type
>
tuple& operator=(sprout::tuples::tuple<UTypes...>&& rhs);
// tuple swap
void swap(tuple& other)