forked from enlightenment/efl
149 lines
3.2 KiB
C++
149 lines
3.2 KiB
C++
///
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/// @file eo_promise.hh
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///
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#ifndef EFL_CXX_EO_PROMISE_HH
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#define EFL_CXX_EO_PROMISE_HH
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#include <Efl.h>
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#include <Eina.hh>
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#include <Ecore_Manual.hh>
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#include <mutex>
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#include <condition_variable>
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#include <eina_tuple.hh>
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#include <eo_promise_meta.hh>
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#include <eo_future.hh>
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namespace efl {
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template <typename...Args>
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struct shared_future;
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namespace _impl {
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struct promise_common
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{
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explicit promise_common(Efl_Promise* _promise) : _promise(_promise) {}
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explicit promise_common(std::nullptr_t) : _promise(nullptr) {}
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promise_common()
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{
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_promise = efl_add(EFL_PROMISE_CLASS, ecore_main_loop_get());
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}
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~promise_common()
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{
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if(_promise)
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::efl_unref(_promise);
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}
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promise_common(promise_common const& other)
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: _promise( ::efl_ref(other._promise))
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{
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}
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promise_common(promise_common&& other)
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: _promise(nullptr)
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{
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std::swap(*this, other);
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}
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promise_common& operator=(promise_common const& other)
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{
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_promise = ::efl_ref(other._promise);
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return *this;
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}
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promise_common& operator=(promise_common&& other)
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{
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std::swap(*this, other);
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return *this;
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}
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bool valid() const
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{
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return _promise != nullptr;
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}
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void swap(promise_common& other)
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{
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std::swap(*this, other);
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}
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void set_exception(std::exception_ptr /*p*/)
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{
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}
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Efl_Promise* _promise;
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};
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template <typename P>
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struct promise_progress : promise_common
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{
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void set_progress(P const& progress)
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{
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efl_promise_progress_set(this->_promise, &progress);
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}
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};
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template <>
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struct promise_progress<void> : promise_common
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{
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void set_progress()
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{
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efl_promise_progress_set(this->_promise, nullptr);
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}
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};
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template <typename T, typename Progress>
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struct promise_1_type : promise_progress<Progress>
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{
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void set_value(T const& v)
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{
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typedef typename eina::alloc_to_c_traits<T>::c_type c_type;
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c_type* c_value = eina::alloc_to_c_traits<T>::copy_alloc(v);
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efl_promise_value_set(this->_promise, c_value, & eina::alloc_to_c_traits<T>::free_alloc);
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}
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void set_value(T&& v)
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{
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typedef typename eina::alloc_to_c_traits<T>::c_type c_type;
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c_type* c_value = eina::alloc_to_c_traits<T>::copy_alloc(std::move(v));
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efl_promise_value_set(this->_promise, c_value, & eina::alloc_to_c_traits<T>::free_alloc);
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}
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};
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template <typename Progress>
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struct promise_1_type<void, Progress> : promise_progress<Progress>
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{
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void set_value()
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{
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efl_promise_value_set(this->_promise, nullptr, nullptr);
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}
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};
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}
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template <typename T, typename Progress = void>
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struct promise : private _impl::promise_1_type<T, Progress>
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{
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typedef _impl::promise_1_type<T, Progress> _base_type;
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using _base_type::_base_type;
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using _base_type::set_value;
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using _base_type::set_progress;
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using _base_type::set_exception;
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shared_future<T, progress<Progress>> get_future()
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{
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return shared_future<T, progress<Progress>>{ ::efl_ref( ::efl_promise_future_get(this->_promise)) };
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}
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void swap(promise<T, progress<Progress>>& other)
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{
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_base_type::swap(other);
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}
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};
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template <typename...Args>
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void swap(promise<Args...>& lhs, promise<Args...>& rhs)
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{
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lhs.swap(rhs);
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}
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}
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#endif
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