Merge lime output into next branch

1 files changed, 0 insertions, 876 deletions

diff --git a/lib/asio/experimental/impl/co_spawn.hpp b/lib/asio/experimental/impl/co_spawn.hpp
deleted file mode 100644
index 8263eff..0000000
--- a/lib/asio/experimental/impl/co_spawn.hpp
+++ /dev/null
@@ -1,876 +0,0 @@
-//
-// experimental/impl/co_spawn.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_EXPERIMENTAL_IMPL_CO_SPAWN_HPP
-#define ASIO_EXPERIMENTAL_IMPL_CO_SPAWN_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <exception>
-#include <functional>
-#include <memory>
-#include <new>
-#include <tuple>
-#include <utility>
-#include "asio/async_result.hpp"
-#include "asio/detail/thread_context.hpp"
-#include "asio/detail/thread_info_base.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/dispatch.hpp"
-#include "asio/post.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace experimental {
-namespace detail {
-
-// Promise object for coroutine at top of thread-of-execution "stack".
-template <typename Executor>
-class awaiter
-{
-public:
-  struct deleter
-  {
-    void operator()(awaiter* a)
-    {
-      if (a)
-        a->release();
-    }
-  };
-
-  typedef std::unique_ptr<awaiter, deleter> ptr;
-
-  typedef Executor executor_type;
-
-  ~awaiter()
-  {
-    if (has_executor_)
-      static_cast<Executor*>(static_cast<void*>(executor_))->~Executor();
-  }
-
-  void set_executor(const Executor& ex)
-  {
-    new (&executor_) Executor(ex);
-    has_executor_ = true;
-  }
-
-  executor_type get_executor() const noexcept
-  {
-    return *static_cast<const Executor*>(static_cast<const void*>(executor_));
-  }
-
-  awaiter* get_return_object()
-  {
-    return this;
-  }
-
-  auto initial_suspend()
-  {
-    return std::experimental::suspend_always();
-  }
-
-  auto final_suspend()
-  {
-    return std::experimental::suspend_always();
-  }
-
-  void return_void()
-  {
-  }
-
-  awaiter* add_ref()
-  {
-    ++ref_count_;
-    return this;
-  }
-
-  void release()
-  {
-    if (--ref_count_ == 0)
-      coroutine_handle<awaiter>::from_promise(*this).destroy();
-  }
-
-  void unhandled_exception()
-  {
-    pending_exception_ = std::current_exception();
-  }
-
-  void rethrow_unhandled_exception()
-  {
-    if (pending_exception_)
-    {
-      std::exception_ptr ex = std::exchange(pending_exception_, nullptr);
-      std::rethrow_exception(ex);
-    }
-  }
-
-private:
-  std::size_t ref_count_ = 0;
-  std::exception_ptr pending_exception_ = nullptr;
-  alignas(Executor) unsigned char executor_[sizeof(Executor)];
-  bool has_executor_ = false;
-};
-
-// Base promise for coroutines further down the thread-of-execution "stack".
-template <typename Executor>
-class awaitee_base
-{
-public:
-#if !defined(ASIO_DISABLE_AWAITEE_RECYCLING)
-  void* operator new(std::size_t size)
-  {
-    return asio::detail::thread_info_base::allocate(
-        asio::detail::thread_info_base::awaitee_tag(),
-        asio::detail::thread_context::thread_call_stack::top(),
-        size);
-  }
-
-  void operator delete(void* pointer, std::size_t size)
-  {
-    asio::detail::thread_info_base::deallocate(
-        asio::detail::thread_info_base::awaitee_tag(),
-        asio::detail::thread_context::thread_call_stack::top(),
-        pointer, size);
-  }
-#endif // !defined(ASIO_DISABLE_AWAITEE_RECYCLING)
-
-  auto initial_suspend()
-  {
-    return std::experimental::suspend_never();
-  }
-
-  struct final_suspender
-  {
-    awaitee_base* this_;
-
-    bool await_ready() const noexcept
-    {
-      return false;
-    }
-
-    void await_suspend(coroutine_handle<void>)
-    {
-      this_->wake_caller();
-    }
-
-    void await_resume() const noexcept
-    {
-    }
-  };
-
-  auto final_suspend()
-  {
-    return final_suspender{this};
-  }
-
-  void set_except(std::exception_ptr e)
-  {
-    pending_exception_ = e;
-  }
-
-  void unhandled_exception()
-  {
-    set_except(std::current_exception());
-  }
-
-  void rethrow_exception()
-  {
-    if (pending_exception_)
-    {
-      std::exception_ptr ex = std::exchange(pending_exception_, nullptr);
-      std::rethrow_exception(ex);
-    }
-  }
-
-  awaiter<Executor>* top()
-  {
-    return awaiter_;
-  }
-
-  coroutine_handle<void> caller()
-  {
-    return caller_;
-  }
-
-  bool ready() const
-  {
-    return ready_;
-  }
-
-  void wake_caller()
-  {
-    if (caller_)
-      caller_.resume();
-    else
-      ready_ = true;
-  }
-
-  class awaitable_executor
-  {
-  public:
-    explicit awaitable_executor(awaitee_base* a)
-      : this_(a)
-    {
-    }
-
-    bool await_ready() const noexcept
-    {
-      return this_->awaiter_ != nullptr;
-    }
-
-    template <typename U, typename Ex>
-    void await_suspend(coroutine_handle<detail::awaitee<U, Ex>> h) noexcept
-    {
-      this_->resume_on_attach_ = h;
-    }
-
-    Executor await_resume()
-    {
-      return this_->awaiter_->get_executor();
-    }
-
-  private:
-    awaitee_base* this_;
-  };
-
-  awaitable_executor await_transform(this_coro::executor_t) noexcept
-  {
-    return awaitable_executor(this);
-  }
-
-  class awaitable_token
-  {
-  public:
-    explicit awaitable_token(awaitee_base* a)
-      : this_(a)
-    {
-    }
-
-    bool await_ready() const noexcept
-    {
-      return this_->awaiter_ != nullptr;
-    }
-
-    template <typename U, typename Ex>
-    void await_suspend(coroutine_handle<detail::awaitee<U, Ex>> h) noexcept
-    {
-      this_->resume_on_attach_ = h;
-    }
-
-    await_token<Executor> await_resume()
-    {
-      return await_token<Executor>(this_->awaiter_);
-    }
-
-  private:
-    awaitee_base* this_;
-  };
-
-  awaitable_token await_transform(this_coro::token_t) noexcept
-  {
-    return awaitable_token(this);
-  }
-
-  template <typename T>
-  awaitable<T, Executor> await_transform(awaitable<T, Executor>& t) const
-  {
-    return std::move(t);
-  }
-
-  template <typename T>
-  awaitable<T, Executor> await_transform(awaitable<T, Executor>&& t) const
-  {
-    return std::move(t);
-  }
-
-  std::experimental::suspend_always await_transform(
-      std::experimental::suspend_always) const
-  {
-    return std::experimental::suspend_always();
-  }
-
-  void attach_caller(coroutine_handle<awaiter<Executor>> h)
-  {
-    this->caller_ = h;
-    this->attach_callees(&h.promise());
-  }
-
-  template <typename U>
-  void attach_caller(coroutine_handle<awaitee<U, Executor>> h)
-  {
-    this->caller_ = h;
-    if (h.promise().awaiter_)
-      this->attach_callees(h.promise().awaiter_);
-    else
-      h.promise().unattached_callee_ = this;
-  }
-
-  void attach_callees(awaiter<Executor>* a)
-  {
-    for (awaitee_base* curr = this; curr != nullptr;
-        curr = std::exchange(curr->unattached_callee_, nullptr))
-    {
-      curr->awaiter_ = a;
-      if (curr->resume_on_attach_)
-        return std::exchange(curr->resume_on_attach_, nullptr).resume();
-    }
-  }
-
-protected:
-  awaiter<Executor>* awaiter_ = nullptr;
-  coroutine_handle<void> caller_ = nullptr;
-  awaitee_base<Executor>* unattached_callee_ = nullptr;
-  std::exception_ptr pending_exception_ = nullptr;
-  coroutine_handle<void> resume_on_attach_ = nullptr;
-  bool ready_ = false;
-};
-
-// Promise object for coroutines further down the thread-of-execution "stack".
-template <typename T, typename Executor>
-class awaitee
-  : public awaitee_base<Executor>
-{
-public:
-  awaitee()
-  {
-  }
-
-  awaitee(awaitee&& other) noexcept
-    : awaitee_base<Executor>(std::move(other))
-  {
-  }
-
-  ~awaitee()
-  {
-    if (has_result_)
-      static_cast<T*>(static_cast<void*>(result_))->~T();
-  }
-
-  awaitable<T, Executor> get_return_object()
-  {
-    return awaitable<T, Executor>(this);
-  };
-
-  template <typename U>
-  void return_value(U&& u)
-  {
-    new (&result_) T(std::forward<U>(u));
-    has_result_ = true;
-  }
-
-  T get()
-  {
-    this->caller_ = nullptr;
-    this->rethrow_exception();
-    return std::move(*static_cast<T*>(static_cast<void*>(result_)));
-  }
-
-private:
-  alignas(T) unsigned char result_[sizeof(T)];
-  bool has_result_ = false;
-};
-
-// Promise object for coroutines further down the thread-of-execution "stack".
-template <typename Executor>
-class awaitee<void, Executor>
-  : public awaitee_base<Executor>
-{
-public:
-  awaitable<void, Executor> get_return_object()
-  {
-    return awaitable<void, Executor>(this);
-  };
-
-  void return_void()
-  {
-  }
-
-  void get()
-  {
-    this->caller_ = nullptr;
-    this->rethrow_exception();
-  }
-};
-
-template <typename Executor>
-class awaiter_task
-{
-public:
-  typedef Executor executor_type;
-
-  awaiter_task(awaiter<Executor>* a)
-    : awaiter_(a->add_ref())
-  {
-  }
-
-  awaiter_task(awaiter_task&& other) noexcept
-    : awaiter_(std::exchange(other.awaiter_, nullptr))
-  {
-  }
-
-  ~awaiter_task()
-  {
-    if (awaiter_)
-    {
-      // Coroutine "stack unwinding" must be performed through the executor.
-      executor_type ex(awaiter_->get_executor());
-      (post)(ex,
-          [a = std::move(awaiter_)]() mutable
-          {
-            typename awaiter<Executor>::ptr(std::move(a));
-          });
-    }
-  }
-
-  executor_type get_executor() const noexcept
-  {
-    return awaiter_->get_executor();
-  }
-
-protected:
-  typename awaiter<Executor>::ptr awaiter_;
-};
-
-template <typename Executor>
-class co_spawn_handler : public awaiter_task<Executor>
-{
-public:
-  using awaiter_task<Executor>::awaiter_task;
-
-  void operator()()
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    coroutine_handle<awaiter<Executor>>::from_promise(*ptr.get()).resume();
-  }
-};
-
-template <typename Executor, typename T>
-class await_handler_base : public awaiter_task<Executor>
-{
-public:
-  typedef awaitable<T, Executor> awaitable_type;
-
-  await_handler_base(await_token<Executor> token)
-    : awaiter_task<Executor>(token.awaiter_),
-      awaitee_(nullptr)
-  {
-  }
-
-  await_handler_base(await_handler_base&& other) noexcept
-    : awaiter_task<Executor>(std::move(other)),
-      awaitee_(std::exchange(other.awaitee_, nullptr))
-  {
-  }
-
-  void attach_awaitee(const awaitable<T, Executor>& a)
-  {
-    awaitee_ = a.awaitee_;
-  }
-
-protected:
-  awaitee<T, Executor>* awaitee_;
-};
-
-template <typename, typename...> class await_handler;
-
-template <typename Executor>
-class await_handler<Executor, void>
-  : public await_handler_base<Executor, void>
-{
-public:
-  using await_handler_base<Executor, void>::await_handler_base;
-
-  void operator()()
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    this->awaitee_->return_void();
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor>
-class await_handler<Executor, asio::error_code>
-  : public await_handler_base<Executor, void>
-{
-public:
-  typedef void return_type;
-
-  using await_handler_base<Executor, void>::await_handler_base;
-
-  void operator()(const asio::error_code& ec)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ec)
-    {
-      this->awaitee_->set_except(
-          std::make_exception_ptr(asio::system_error(ec)));
-    }
-    else
-      this->awaitee_->return_void();
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor>
-class await_handler<Executor, std::exception_ptr>
-  : public await_handler_base<Executor, void>
-{
-public:
-  using await_handler_base<Executor, void>::await_handler_base;
-
-  void operator()(std::exception_ptr ex)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ex)
-      this->awaitee_->set_except(ex);
-    else
-      this->awaitee_->return_void();
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename T>
-class await_handler<Executor, T>
-  : public await_handler_base<Executor, T>
-{
-public:
-  using await_handler_base<Executor, T>::await_handler_base;
-
-  template <typename Arg>
-  void operator()(Arg&& arg)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    this->awaitee_->return_value(std::forward<Arg>(arg));
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename T>
-class await_handler<Executor, asio::error_code, T>
-  : public await_handler_base<Executor, T>
-{
-public:
-  using await_handler_base<Executor, T>::await_handler_base;
-
-  template <typename Arg>
-  void operator()(const asio::error_code& ec, Arg&& arg)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ec)
-    {
-      this->awaitee_->set_except(
-          std::make_exception_ptr(asio::system_error(ec)));
-    }
-    else
-      this->awaitee_->return_value(std::forward<Arg>(arg));
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename T>
-class await_handler<Executor, std::exception_ptr, T>
-  : public await_handler_base<Executor, T>
-{
-public:
-  using await_handler_base<Executor, T>::await_handler_base;
-
-  template <typename Arg>
-  void operator()(std::exception_ptr ex, Arg&& arg)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ex)
-      this->awaitee_->set_except(ex);
-    else
-      this->awaitee_->return_value(std::forward<Arg>(arg));
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename... Ts>
-class await_handler
-  : public await_handler_base<Executor, std::tuple<Ts...>>
-{
-public:
-  using await_handler_base<Executor, std::tuple<Ts...>>::await_handler_base;
-
-  template <typename... Args>
-  void operator()(Args&&... args)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    this->awaitee_->return_value(
-        std::forward_as_tuple(std::forward<Args>(args)...));
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename... Ts>
-class await_handler<Executor, asio::error_code, Ts...>
-  : public await_handler_base<Executor, std::tuple<Ts...>>
-{
-public:
-  using await_handler_base<Executor, std::tuple<Ts...>>::await_handler_base;
-
-  template <typename... Args>
-  void operator()(const asio::error_code& ec, Args&&... args)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ec)
-    {
-      this->awaitee_->set_except(
-          std::make_exception_ptr(asio::system_error(ec)));
-    }
-    else
-    {
-      this->awaitee_->return_value(
-          std::forward_as_tuple(std::forward<Args>(args)...));
-    }
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename Executor, typename... Ts>
-class await_handler<Executor, std::exception_ptr, Ts...>
-  : public await_handler_base<Executor, std::tuple<Ts...>>
-{
-public:
-  using await_handler_base<Executor, std::tuple<Ts...>>::await_handler_base;
-
-  template <typename... Args>
-  void operator()(std::exception_ptr ex, Args&&... args)
-  {
-    typename awaiter<Executor>::ptr ptr(std::move(this->awaiter_));
-    if (ex)
-      this->awaitee_->set_except(ex);
-    else
-    {
-      this->awaitee_->return_value(
-          std::forward_as_tuple(std::forward<Args>(args)...));
-    }
-    this->awaitee_->wake_caller();
-    ptr->rethrow_unhandled_exception();
-  }
-};
-
-template <typename T>
-struct awaitable_signature;
-
-template <typename T, typename Executor>
-struct awaitable_signature<awaitable<T, Executor>>
-{
-  typedef void type(std::exception_ptr, T);
-};
-
-template <typename Executor>
-struct awaitable_signature<awaitable<void, Executor>>
-{
-  typedef void type(std::exception_ptr);
-};
-
-template <typename T, typename Executor, typename F, typename Handler>
-awaiter<Executor>* co_spawn_entry_point(awaitable<T, Executor>*,
-    executor_work_guard<Executor> work_guard, F f, Handler handler)
-{
-  bool done = false;
-
-  try
-  {
-    T t = co_await f();
-
-    done = true;
-
-    (dispatch)(work_guard.get_executor(),
-        [handler = std::move(handler), t = std::move(t)]() mutable
-        {
-          handler(std::exception_ptr(), std::move(t));
-        });
-  }
-  catch (...)
-  {
-    if (done)
-      throw;
-
-    (dispatch)(work_guard.get_executor(),
-        [handler = std::move(handler), e = std::current_exception()]() mutable
-        {
-          handler(e, T());
-        });
-  }
-}
-
-template <typename Executor, typename F, typename Handler>
-awaiter<Executor>* co_spawn_entry_point(awaitable<void, Executor>*,
-    executor_work_guard<Executor> work_guard, F f, Handler handler)
-{
-  std::exception_ptr e = nullptr;
-
-  try
-  {
-    co_await f();
-  }
-  catch (...)
-  {
-    e = std::current_exception();
-  }
-
-  (dispatch)(work_guard.get_executor(),
-      [handler = std::move(handler), e]() mutable
-      {
-        handler(e);
-      });
-}
-
-template <typename Executor, typename F, typename CompletionToken>
-auto co_spawn(const Executor& ex, F&& f, CompletionToken&& token)
-{
-  typedef typename result_of<F()>::type awaitable_type;
-  typedef typename awaitable_type::executor_type executor_type;
-  typedef typename awaitable_signature<awaitable_type>::type signature_type;
-
-  async_completion<CompletionToken, signature_type> completion(token);
-
-  executor_type ex2(ex);
-  auto work_guard = make_work_guard(completion.completion_handler, ex2);
-
-  auto* a = (co_spawn_entry_point)(
-      static_cast<awaitable_type*>(nullptr), std::move(work_guard),
-      std::forward<F>(f), std::move(completion.completion_handler));
-
-  a->set_executor(ex2);
-  (post)(co_spawn_handler<executor_type>(a));
-
-  return completion.result.get();
-}
-
-#if defined(_MSC_VER)
-# pragma warning(push)
-# pragma warning(disable:4033)
-#endif // defined(_MSC_VER)
-
-#if defined(_MSC_VER)
-template <typename T> T dummy_return()
-{
-  return std::move(*static_cast<T*>(nullptr));
-}
-
-template <>
-inline void dummy_return()
-{
-}
-#endif // defined(_MSC_VER)
-
-template <typename Awaitable>
-inline Awaitable make_dummy_awaitable()
-{
-  for (;;) co_await std::experimental::suspend_always();
-#if defined(_MSC_VER)
-  co_return dummy_return<typename Awaitable::value_type>();
-#endif // defined(_MSC_VER)
-}
-
-#if defined(_MSC_VER)
-# pragma warning(pop)
-#endif // defined(_MSC_VER)
-
-} // namespace detail
-} // namespace experimental
-
-template <typename Executor, typename R, typename... Args>
-class async_result<experimental::await_token<Executor>, R(Args...)>
-{
-public:
-  typedef experimental::detail::await_handler<
-    Executor, typename decay<Args>::type...> completion_handler_type;
-
-  typedef typename experimental::detail::await_handler<
-    Executor, Args...>::awaitable_type return_type;
-
-  async_result(completion_handler_type& h)
-    : awaitable_(experimental::detail::make_dummy_awaitable<return_type>())
-  {
-    h.attach_awaitee(awaitable_);
-  }
-
-  return_type get()
-  {
-    return std::move(awaitable_);
-  }
-
-private:
-  return_type awaitable_;
-};
-
-#if !defined(ASIO_NO_DEPRECATED)
-
-template <typename Executor, typename R, typename... Args>
-struct handler_type<experimental::await_token<Executor>, R(Args...)>
-{
-  typedef experimental::detail::await_handler<
-    Executor, typename decay<Args>::type...> type;
-};
-
-template <typename Executor, typename... Args>
-class async_result<experimental::detail::await_handler<Executor, Args...>>
-{
-public:
-  typedef typename experimental::detail::await_handler<
-    Executor, Args...>::awaitable_type type;
-
-  async_result(experimental::detail::await_handler<Executor, Args...>& h)
-    : awaitable_(experimental::detail::make_dummy_awaitable<type>())
-  {
-    h.attach_awaitee(awaitable_);
-  }
-
-  type get()
-  {
-    return std::move(awaitable_);
-  }
-
-private:
-  type awaitable_;
-};
-
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-} // namespace asio
-
-namespace std { namespace experimental {
-
-template <typename Executor, typename... Args>
-struct coroutine_traits<
-  asio::experimental::detail::awaiter<Executor>*, Args...>
-{
-  typedef asio::experimental::detail::awaiter<Executor> promise_type;
-};
-
-template <typename T, typename Executor, typename... Args>
-struct coroutine_traits<
-  asio::experimental::awaitable<T, Executor>, Args...>
-{
-  typedef asio::experimental::detail::awaitee<T, Executor> promise_type;
-};
-
-}} // namespace std::experimental
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_EXPERIMENTAL_IMPL_CO_SPAWN_HPP