mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
#ifndef SPROUT_RANDOM_ITERATOR_HPP
|
|
#define SPROUT_RANDOM_ITERATOR_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/generator_iterator.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
|
|
namespace sprout {
|
|
namespace random {
|
|
//
|
|
// begin
|
|
//
|
|
template<
|
|
typename Engine, typename Distribution,
|
|
typename sprout::enabler_if<!std::is_integral<Distribution>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR auto
|
|
begin(
|
|
Engine const& engine, Distribution const& distribution,
|
|
typename sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>::difference_type count = -1
|
|
)
|
|
-> sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>
|
|
{
|
|
return sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>(distribution(engine), count);
|
|
}
|
|
template<typename Engine>
|
|
inline SPROUT_CONSTEXPR auto
|
|
begin(
|
|
Engine const& engine,
|
|
typename sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>::difference_type count = -1
|
|
)
|
|
-> sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>
|
|
{
|
|
return sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>(engine(), count);
|
|
}
|
|
|
|
//
|
|
// end
|
|
//
|
|
template<
|
|
typename Engine, typename Distribution,
|
|
typename sprout::enabler_if<!std::is_integral<Distribution>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR auto
|
|
end(Engine const& engine, Distribution const& distribution)
|
|
-> sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>
|
|
{
|
|
return sprout::generator_iterator<typename std::remove_reference<decltype(distribution(engine))>::type>();
|
|
}
|
|
template<typename Engine>
|
|
inline SPROUT_CONSTEXPR auto
|
|
end(Engine const& engine)
|
|
-> sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>
|
|
{
|
|
return sprout::generator_iterator<typename std::remove_reference<decltype(engine())>::type>();
|
|
}
|
|
} // namespace random
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_RANDOM_ITERATOR_HPP
|