coro.hpp

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#pragma once
 
#include "condy/detail/coro.hpp"
#include <coroutine>
#include <utility>
 
namespace condy {

template <typename T = void, typename Allocator = void>
class [[nodiscard]] Coro {
public:
    using promise_type = detail::Promise<T, Allocator>;
 
    Coro(std::coroutine_handle<promise_type> h) : handle_(h) {}
    Coro(Coro &&other) noexcept : handle_(other.release()) {}
 
    Coro(const Coro &) = delete;
    Coro &operator=(const Coro &) = delete;
    Coro &operator=(Coro &&other) = delete;
 
    ~Coro() {
        if (handle_) {
            handle_.destroy();
        }
    }
 
public:
    auto operator co_await() noexcept {
        return detail::CoroAwaiter<T, Allocator>{release()};
    }
 
    std::coroutine_handle<promise_type> release() noexcept {
        return std::exchange(handle_, nullptr);
    }
 
private:
    std::coroutine_handle<promise_type> handle_;
};
 
} // namespace condy