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    • MIHMessageRegistry.ih
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    1 //
    2 // Copyright (c) 2020 Fraunhofer Institute for Applied Information Technology (FIT)
    3 // Network Research Group (NET)
    4 // Schloss Birlinghoven, 53754 Sankt Augustin, GERMANY
    5 // Contact: support@wiback.org
    6 //
    7 // This file is part of the SENF code tree.
    8 // It is licensed under the 3-clause BSD License (aka New BSD License).
    9 // See LICENSE.txt in the top level directory for details or visit
    10 // https://opensource.org/licenses/BSD-3-Clause
    11 //
    12 
    13 
    14 /** \file
    15  \brief MIH Message-Registry internal header */
    16 
    17 #ifndef IH_SENF_Packets_80221Bundle_MIHMessageRegistry_
    18 #define IH_SENF_Packets_80221Bundle_MIHMessageRegistry_ 1
    19 
    20 // Custom includes
    21 
    22 //-/////////////////////////////////////////////////////////////////////////////////////////////////
    23 namespace senf {
    24 
    25  namespace detail {
    26 
    27  template<class T, typename Signature>
    28  struct has_static_validate_member
    29  {
    30  template<Signature *>
    31  struct helper;
    32 
    33  template<class U>
    34  static char test(helper<&U::validate> *);
    35 
    36  template<class U>
    37  static char (&test(...))[2];
    38 
    39  static const bool value = sizeof(test<T>(0))==1;
    40  };
    41 
    42 
    43  struct MIHMessageRegistry_EntryBase
    44  : private boost::noncopyable
    45  {
    46  virtual ~MIHMessageRegistry_EntryBase() {}
    47  virtual void validate(senf::Packet message) const = 0;
    48  virtual std::string name() const = 0;
    49  };
    50 
    51 
    52  template <class MIHPacket,
    53  bool use_validate_member = has_static_validate_member<typename MIHPacket::type, void(MIHPacket)>::value>
    54  struct MIHMessageRegistryEntry : MIHMessageRegistry_EntryBase
    55  {
    56  virtual void validate(senf::Packet message) const {}
    57  virtual std::string name() const {
    58  return senf::prettyName(typeid(MIHPacket));
    59  }
    60  };
    61 
    62  template <class MIHPacket>
    63  struct MIHMessageRegistryEntry<MIHPacket, true> : MIHMessageRegistry_EntryBase
    64  {
    65  virtual void validate(senf::Packet message) const;
    66  virtual std::string name() const {
    67  return senf::prettyName(typeid(MIHPacket));
    68  }
    69  };
    70 
    71  }
    72 }
    73 //-/////////////////////////////////////////////////////////////////////////////////////////////////
    74 #endif
    75 
    76 
    77 
    78 // Local Variables:
    79 // mode: c++
    80 // fill-column: 100
    81 // c-file-style: "senf"
    82 // indent-tabs-mode: nil
    83 // ispell-local-dictionary: "american"
    84 // compile-command: "scons -u test"
    85 // comment-column: 40
    86 // End: