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#ifndef INCLUDED_START_
#define INCLUDED_START_
#include "../../promisebase/promisebase.h"
#include "../awaiter/awaiter.h"
#include "../letter/letter.h"
#include "../digit/digit.h"
#include "../done/done.h"
class Start: public Awaiter
{
struct State: public PromiseBase<Start, State>
{
template <typename NextState>
NextState &await_transform(NextState &nextState) const;
// Letter &await_transform(Letter &letter) const
// {
// return letter;
// }
// Digit &await_transform(Digit &digit) const
// {
// return digit;
// }
// Done &await_transform(Done &done) const
// {
// return done;
};
std::coroutine_handle<State> d_handle;
public:
using promise_type = State;
using Handle = std::coroutine_handle<State>;
explicit Start(Handle handle);
~Start();
void go();
template <typename HandleType>
std::coroutine_handle<State> await_suspend(HandleType &handle);
};
template <typename HandleType>
std::coroutine_handle<Start::State> Start::await_suspend(HandleType &handle)
{
auto ret = d_handle;
d_handle = 0;
return ret;
}
template <typename NextState>
inline NextState &Start::State::await_transform(NextState &nextState) const
{
return nextState;
}
extern Start g_start;
#endif
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