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change generator access tarits

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This commit is contained in:
bolero-MURAKAMI 2016-04-14 20:14:49 +09:00
parent 58b33d31c5
commit 75e164418b
12 changed files with 180 additions and 214 deletions
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74
sprout/generator/next_generator.hpp
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@ -13,65 +13,6 @@
#include <sprout/config.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/generator/generator_access_traits.hpp>
#include <sprout/adl/not_found.hpp>
namespace sprout_adl {
sprout::not_found_via_adl get_next_generator(...);
} // namespace sprout_adl
namespace sprout_generator_detail {
using sprout_adl::get_next_generator;
template<typename Gen>
inline SPROUT_CONSTEXPR decltype(sprout::generators::generator_access_traits<Gen>::get_next_generator(std::declval<Gen&>()))
get_next_generator(Gen& gen)
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::generator_access_traits<Gen>::get_next_generator(std::declval<Gen&>()))
{
return sprout::generators::generator_access_traits<Gen>::get_next_generator(gen);
}
template<typename Gen>
inline SPROUT_CONSTEXPR typename std::enable_if<
!std::is_const<Gen>::value && !std::is_volatile<Gen>::value && !std::is_reference<Gen>::value,
decltype(sprout::generators::generator_access_traits<typename std::remove_reference<Gen>::type>::get_next_generator(std::declval<Gen&&>()))
>::type
get_next_generator(Gen&& gen)
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::generator_access_traits<typename std::remove_reference<Gen>::type>::get_next_generator(std::declval<Gen&&>()))
{
return sprout::generators::generator_access_traits<Gen>::get_next_generator(gen);
}
template<typename Gen>
inline SPROUT_CONSTEXPR decltype(sprout::generators::generator_access_traits<Gen const>::get_next_generator(std::declval<Gen const&>()))
get_next_generator(Gen const& gen)
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::generator_access_traits<Gen const>::get_next_generator(std::declval<Gen const&>()))
{
return sprout::generators::generator_access_traits<Gen const>::get_next_generator(gen);
}
template<typename Gen>
inline SPROUT_CONSTEXPR decltype(get_next_generator(std::declval<Gen&>()))
call_get_next_generator(Gen& gen)
SPROUT_NOEXCEPT_IF_EXPR(get_next_generator(std::declval<Gen&>()))
{
return get_next_generator(gen);
}
template<typename Gen>
inline SPROUT_CONSTEXPR typename std::enable_if<
!std::is_const<Gen>::value && !std::is_volatile<Gen>::value && !std::is_reference<Gen>::value,
decltype(get_next_generator(std::declval<Gen&&>()))
>::type
call_get_next_generator(Gen&& gen)
SPROUT_NOEXCEPT_IF_EXPR(get_next_generator(std::declval<Gen&&>()))
{
return get_next_generator(gen);
}
template<typename Gen>
inline SPROUT_CONSTEXPR decltype(get_next_generator(std::declval<Gen const&>()))
call_get_next_generator(Gen const& gen)
SPROUT_NOEXCEPT_IF_EXPR(get_next_generator(std::declval<Gen const&>()))
{
return get_next_generator(gen);
}
} // namespace sprout_generator_detail
namespace sprout {
namespace generators {
@ -79,18 +20,19 @@ namespace sprout {
// next_generator
//
// effect:
// ADL callable get_next_generator(t) -> get_next_generator(t)
// otherwise -> sprout::generators::generator_access_traits<T>::get_next_generator(t)
// sprout::generators::generator_access_traits<typename std::remove_reference<T>::type>::get_next_generator(t)
// [default]
// member callable t.next_generator() -> t.next_generator()
// otherwise -> sprout::tuples::get<0>(t)
// ADL callable get_next_generator(t) -> get_next_generator(t)
// [default]
// callable t.next_generator() -> t.next_generator()
// otherwise -> sprout::tuples::get<0>(t)
//
template<typename T>
inline SPROUT_CONSTEXPR decltype(sprout_generator_detail::call_get_next_generator(std::declval<T>()))
inline SPROUT_CONSTEXPR decltype(sprout::generators::generator_access_traits<typename std::remove_reference<T>::type>::get_next_generator(std::declval<T>()))
next_generator(T&& t)
SPROUT_NOEXCEPT_IF_EXPR(sprout_generator_detail::call_get_next_generator(std::declval<T>()))
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::generator_access_traits<typename std::remove_reference<T>::type>::get_next_generator(std::declval<T>()))
{
return sprout_generator_detail::call_get_next_generator(SPROUT_FORWARD(T, t));
return sprout::generators::generator_access_traits<typename std::remove_reference<T>::type>::get_next_generator(SPROUT_FORWARD(T, t));
}
} // namespace generators