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template <typename T>
Generator<T>::Generator(Generator &&tmp) noexcept
:
d_handle(tmp.d_handle)
{
tmp.d_handle = nullptr;
}
template <typename T>
Generator<T>::~Generator()
{
if (d_handle)
d_handle.destroy();
}
template <typename T>
Generator<T> &Generator<T>::operator=(Generator<T> &&tmp) noexcept
{
swap(tmp);
return *this;
}
template <typename T>
Iterator<T> Generator<T>::begin()
{
if (d_handle)
{
d_handle.resume();
if (d_handle.done())
d_handle.promise().rethrow_if_exception();
}
return Iterator<T>{ d_handle };
}
template <typename T>
inline Sentinel Generator<T>::end() noexcept
{
return Sentinel{};
}
template <typename T>
inline void Generator<T>::swap(Generator &other) noexcept
{
std::swap(d_handle, other.d_handle);
}
template <typename T>
inline
Generator<T>::Generator(Handle handle) noexcept
:
d_handle(handle)
{}
//------------------------------------------------
template<typename FUNC, typename T>
Generator<
std::invoke_result_t<
FUNC &,
typename Generator<T>::iterator::reference>
>
fmap(FUNC func, Generator<T> source)
{
for (auto &&value: source)
co_yield std::invoke(
func,
static_cast<decltype(value)>(value)
);
}
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