FM / impl

/usr/include/boost/asio/impl

Name	Size	Mode	Actions
awaitable.hpp	11748	0644	edit dl rm
buffered_read_stream.hpp	16925	0644	edit dl rm
buffered_write_stream.hpp	16429	0644	edit dl rm
compose.hpp	20461	0644	edit dl rm
connect.hpp	32234	0644	edit dl rm
co_spawn.hpp	8834	0644	edit dl rm
defer.hpp	7803	0644	edit dl rm
detached.hpp	3374	0644	edit dl rm
dispatch.hpp	7567	0644	edit dl rm
error.ipp	3070	0644	edit dl rm
execution_context.hpp	3247	0644	edit dl rm
execution_context.ipp	1801	0644	edit dl rm
executor.hpp	6835	0644	edit dl rm
executor.ipp	1002	0644	edit dl rm
handler_alloc_hook.ipp	1984	0644	edit dl rm
io_context.hpp	13728	0644	edit dl rm
io_context.ipp	4108	0644	edit dl rm
multiple_exceptions.ipp	1280	0644	edit dl rm
post.hpp	7762	0644	edit dl rm
read.hpp	45178	0644	edit dl rm
read_at.hpp	28331	0644	edit dl rm
read_until.hpp	115335	0644	edit dl rm
redirect_error.hpp	12015	0644	edit dl rm
serial_port_base.hpp	1375	0644	edit dl rm
serial_port_base.ipp	13327	0644	edit dl rm
spawn.hpp	15854	0644	edit dl rm
src.hpp	3833	0644	edit dl rm
system_context.hpp	875	0644	edit dl rm
system_context.ipp	2109	0644	edit dl rm
system_executor.hpp	6391	0644	edit dl rm
thread_pool.hpp	10853	0644	edit dl rm
thread_pool.ipp	3132	0644	edit dl rm
use_awaitable.hpp	7244	0644	edit dl rm
use_future.hpp	27610	0644	edit dl rm
write.hpp	41076	0644	edit dl rm
write_at.hpp	24732	0644	edit dl rm

Edit: /usr/include/boost/asio/impl/use_awaitable.hpp (7244B)

//
// impl/use_awaitable.hpp
// ~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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 BOOST_ASIO_IMPL_USE_AWAITABLE_HPP
#define BOOST_ASIO_IMPL_USE_AWAITABLE_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include <boost/asio/detail/config.hpp>
#include <boost/asio/async_result.hpp>

#include <boost/asio/detail/push_options.hpp>

namespace boost {
namespace asio {
namespace detail {

template <typename Executor, typename T>
class awaitable_handler_base
  : public awaitable_thread<Executor>
{
public:
  typedef void result_type;
  typedef awaitable<T, Executor> awaitable_type;

// Construct from the entry point of a new thread of execution.
  awaitable_handler_base(awaitable<void, Executor> a, const Executor& ex)
    : awaitable_thread<Executor>(std::move(a), ex)
  {
  }

// Transfer ownership from another awaitable_thread.
  explicit awaitable_handler_base(awaitable_thread<Executor>* h)
    : awaitable_thread<Executor>(std::move(*h))
  {
  }

protected:
  awaitable_frame<T, Executor>* frame() noexcept
  {
    return static_cast<awaitable_frame<T, Executor>*>(this->top_of_stack_);
  }
};

template <typename, typename...>
class awaitable_handler;

template <typename Executor>
class awaitable_handler<Executor>
  : public awaitable_handler_base<Executor, void>
{
public:
  using awaitable_handler_base<Executor, void>::awaitable_handler_base;

void operator()()
  {
    this->frame()->attach_thread(this);
    this->frame()->return_void();
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor>
class awaitable_handler<Executor, boost::system::error_code>
  : public awaitable_handler_base<Executor, void>
{
public:
  using awaitable_handler_base<Executor, void>::awaitable_handler_base;

void operator()(const boost::system::error_code& ec)
  {
    this->frame()->attach_thread(this);
    if (ec)
      this->frame()->set_error(ec);
    else
      this->frame()->return_void();
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor>
class awaitable_handler<Executor, std::exception_ptr>
  : public awaitable_handler_base<Executor, void>
{
public:
  using awaitable_handler_base<Executor, void>::awaitable_handler_base;

void operator()(std::exception_ptr ex)
  {
    this->frame()->attach_thread(this);
    if (ex)
      this->frame()->set_except(ex);
    else
      this->frame()->return_void();
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename T>
class awaitable_handler<Executor, T>
  : public awaitable_handler_base<Executor, T>
{
public:
  using awaitable_handler_base<Executor, T>::awaitable_handler_base;

template <typename Arg>
  void operator()(Arg&& arg)
  {
    this->frame()->attach_thread(this);
    this->frame()->return_value(std::forward<Arg>(arg));
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename T>
class awaitable_handler<Executor, boost::system::error_code, T>
  : public awaitable_handler_base<Executor, T>
{
public:
  using awaitable_handler_base<Executor, T>::awaitable_handler_base;

template <typename Arg>
  void operator()(const boost::system::error_code& ec, Arg&& arg)
  {
    this->frame()->attach_thread(this);
    if (ec)
      this->frame()->set_error(ec);
    else
      this->frame()->return_value(std::forward<Arg>(arg));
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename T>
class awaitable_handler<Executor, std::exception_ptr, T>
  : public awaitable_handler_base<Executor, T>
{
public:
  using awaitable_handler_base<Executor, T>::awaitable_handler_base;

template <typename Arg>
  void operator()(std::exception_ptr ex, Arg&& arg)
  {
    this->frame()->attach_thread(this);
    if (ex)
      this->frame()->set_except(ex);
    else
      this->frame()->return_value(std::forward<Arg>(arg));
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename... Ts>
class awaitable_handler
  : public awaitable_handler_base<Executor, std::tuple<Ts...>>
{
public:
  using awaitable_handler_base<Executor,
    std::tuple<Ts...>>::awaitable_handler_base;

template <typename... Args>
  void operator()(Args&&... args)
  {
    this->frame()->attach_thread(this);
    this->frame()->return_values(std::forward<Args>(args)...);
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename... Ts>
class awaitable_handler<Executor, boost::system::error_code, Ts...>
  : public awaitable_handler_base<Executor, std::tuple<Ts...>>
{
public:
  using awaitable_handler_base<Executor,
    std::tuple<Ts...>>::awaitable_handler_base;

template <typename... Args>
  void operator()(const boost::system::error_code& ec, Args&&... args)
  {
    this->frame()->attach_thread(this);
    if (ec)
      this->frame()->set_error(ec);
    else
      this->frame()->return_values(std::forward<Args>(args)...);
    this->frame()->pop_frame();
    this->pump();
  }
};

template <typename Executor, typename... Ts>
class awaitable_handler<Executor, std::exception_ptr, Ts...>
  : public awaitable_handler_base<Executor, std::tuple<Ts...>>
{
public:
  using awaitable_handler_base<Executor,
    std::tuple<Ts...>>::awaitable_handler_base;

template <typename... Args>
  void operator()(std::exception_ptr ex, Args&&... args)
  {
    this->frame()->attach_thread(this);
    if (ex)
      this->frame()->set_except(ex);
    else
      this->frame()->return_values(std::forward<Args>(args)...);
    this->frame()->pop_frame();
    this->pump();
  }
};

} // namespace detail

#if !defined(GENERATING_DOCUMENTATION)

template <typename Executor, typename R, typename... Args>
class async_result<use_awaitable_t<Executor>, R(Args...)>
{
public:
  typedef typename detail::awaitable_handler<
      Executor, typename decay<Args>::type...> handler_type;
  typedef typename handler_type::awaitable_type return_type;

#if defined(_MSC_VER)
  template <typename T>
  static T dummy_return()
  {
    return std::move(*static_cast<T*>(nullptr));
  }

template <>
  static void dummy_return()
  {
  }
#endif // defined(_MSC_VER)

template <typename Initiation, typename... InitArgs>
  static return_type initiate(Initiation initiation,
      use_awaitable_t<Executor> u, InitArgs... args)
  {
    (void)u;

co_await [&](auto* frame)
      {
        BOOST_ASIO_HANDLER_LOCATION((u.file_name_, u.line_, u.function_name_));
        handler_type handler(frame->detach_thread());
        std::move(initiation)(std::move(handler), std::move(args)...);
        return static_cast<handler_type*>(nullptr);
      };

for (;;) {} // Never reached.
#if defined(_MSC_VER)
    co_return dummy_return<typename return_type::value_type>();
#endif // defined(_MSC_VER)
  }
};

#endif // !defined(GENERATING_DOCUMENTATION)

} // namespace asio
} // namespace boost

#include <boost/asio/detail/pop_options.hpp>

#endif // BOOST_ASIO_IMPL_USE_AWAITABLE_HPP

cmd: