lower_layer_completion.h

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/*
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  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.
 
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  as designated in a particular file or component or in included license
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  permission to link the program and your derivative works with the
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  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
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*/
 
#ifndef ROUTER_SRC_OPENSSL_INCLUDE_TLS_DETAILS_LOWER_LAYER_COMPLETION_H_
#define ROUTER_SRC_OPENSSL_INCLUDE_TLS_DETAILS_LOWER_LAYER_COMPLETION_H_
 
#include <utility>
 
namespace net {
namespace tls {
 
class NOP_token {
 public:
  void operator()(const std::error_code &, size_t) {}
};
 
template <typename FirstToken, typename SecondToken = NOP_token>
class LowerLayerReadCompletionToken {
 public:
  using First_token_type = std::decay_t<FirstToken>;
  using Second_token_type = std::decay_t<SecondToken>;
 
  LowerLayerReadCompletionToken(const LowerLayerReadCompletionToken &other)
      : first_token_{other.first_token_}, second_token_{other.second_token_} {}
 
  LowerLayerReadCompletionToken(LowerLayerReadCompletionToken &&other)
      : first_token_{std::move(other.first_token_)},
        second_token_{std::move(other.second_token_)} {}
 
  LowerLayerReadCompletionToken(FirstToken &token, SecondToken &second_token)
      : first_token_{std::forward<First_handler_type>(token)},
        second_token_{std::forward<Second_handler_type>(second_token)} {}
 
  LowerLayerReadCompletionToken(FirstToken &&token, SecondToken &&second_token)
      : first_token_{token}, second_token_{second_token} {}
 
  void operator()(std::error_code ec, size_t size) const {
    first_token_.handle_read(ec, size);
    second_token_(ec, size);
  }
 
 private:
  using First_handler_type =
      std::conditional_t<std::is_same<FirstToken, First_token_type>::value,
                         First_token_type &, First_token_type>;
 
  using Second_handler_type =
      std::conditional_t<std::is_same<SecondToken, Second_token_type>::value,
                         Second_token_type &, Second_token_type>;
  mutable FirstToken first_token_;
  mutable SecondToken second_token_;
};
 
template <typename FirstToken, typename SecondToken = NOP_token>
class LowerLayerWriteCompletionToken {
 public:
  using First_token_type = std::decay_t<FirstToken>;
  using Second_token_type = std::decay_t<SecondToken>;
 
  LowerLayerWriteCompletionToken(const LowerLayerWriteCompletionToken &other)
      : first_token_{other.first_token_}, second_token_{other.second_token_} {}
 
  LowerLayerWriteCompletionToken(LowerLayerWriteCompletionToken &&other)
      : first_token_{std::move(other.first_token_)},
        second_token_{std::move(other.second_token_)} {}
 
  LowerLayerWriteCompletionToken(FirstToken &token, SecondToken &second_token)
      : first_token_{std::forward<First_handler_type>(token)},
        second_token_{std::forward<Second_handler_type>(second_token)} {}
 
  LowerLayerWriteCompletionToken(FirstToken &&token, SecondToken &&second_token)
      : first_token_{token}, second_token_{second_token} {}
 
  void operator()(std::error_code ec, size_t size) const {
    first_token_.handle_write(ec, size);
    second_token_(ec, size);
  }
 
 private:
  using First_handler_type =
      std::conditional_t<std::is_same<FirstToken, First_token_type>::value,
                         First_token_type &, First_token_type>;
 
  using Second_handler_type =
      std::conditional_t<std::is_same<SecondToken, Second_token_type>::value,
                         Second_token_type &, Second_token_type>;
 
  mutable FirstToken first_token_;
  mutable SecondToken second_token_;
};
 
template <typename FirstToken, typename SecondToken = NOP_token>
class LowerLayerHandshakeCompletionToken {
 public:
  using First_token_type = std::decay_t<FirstToken>;
  using Second_token_type = std::decay_t<SecondToken>;
 
  LowerLayerHandshakeCompletionToken(
      const LowerLayerHandshakeCompletionToken &other)
      : first_token_{other.first_token_}, second_token_{other.second_token_} {}
 
  LowerLayerHandshakeCompletionToken(LowerLayerHandshakeCompletionToken &&other)
      : first_token_{std::move(other.first_token_)},
        second_token_{std::move(other.second_token_)} {}
 
  LowerLayerHandshakeCompletionToken(FirstToken &token,
                                     SecondToken &second_token)
      : first_token_{std::forward<First_handler_type>(token)},
        second_token_{std::forward<Second_handler_type>(second_token)} {}
 
  LowerLayerHandshakeCompletionToken(FirstToken &&token,
                                     SecondToken &&second_token)
      : first_token_{token}, second_token_{second_token} {}
 
  void operator()(std::error_code ec, size_t size) const {
    first_token_.handle_handshake(ec, size);
    second_token_(ec, size);
  }
 
 private:
  using First_handler_type =
      std::conditional_t<std::is_same<FirstToken, First_token_type>::value,
                         First_token_type &, First_token_type>;
 
  using Second_handler_type =
      std::conditional_t<std::is_same<SecondToken, Second_token_type>::value,
                         Second_token_type &, Second_token_type>;
  mutable FirstToken first_token_;
  mutable SecondToken second_token_;
};
 
}  // namespace tls
}  // namespace net
 
#endif  // ROUTER_SRC_OPENSSL_INCLUDE_TLS_DETAILS_LOWER_LAYER_COMPLETION_H_