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    • ReadHelper.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 ReadHelper internal header */
    16 
    17 #ifndef IH_SENF_Scheduler_ReadHelper_
    18 #define IH_SENF_Scheduler_ReadHelper_ 1
    19 
    20 // Custom includes
    21 
    22 //-/////////////////////////////////////////////////////////////////////////////////////////////////
    23 
    24 namespace senf {
    25 
    26 
    27  /** \brief Abstract predicate interface
    28  \internal
    29  */
    30  template <class Handle>
    31  struct ReadHelper<Handle>::InternalPredicate
    32  {
    33  virtual ~InternalPredicate() {}
    34 
    35  /** \brief template to runtime polymorphic barrier for the predicate interface
    36  \internal
    37 
    38  \implementation This class will provide a polymorphic
    39  wrapper around the non-polymorphic ReadHelper
    40  predicate. This is used, so the predicate can be
    41  specified as an arbitrary callable object (even a
    42  boost::function or a Boost.Lambda expression) without
    43  imposing any inheritance relationship on the predicate
    44  */
    45  template <class Predicate>
    46  struct Dispatcher;
    47 
    48  virtual std::string::size_type operator()(std::string const & data) = 0;
    49  };
    50 
    51  template <class Handle>
    52  template <class Predicate>
    53  struct ReadHelper<Handle>::InternalPredicate::Dispatcher
    54  : public ReadHelper<Handle>::InternalPredicate
    55  {
    56  Dispatcher(Predicate p) : predicate(p) {}
    57  virtual std::string::size_type operator()(std::string const & data);
    58  Predicate predicate;
    59  };
    60 
    61 }
    62 
    63 //-/////////////////////////////////////////////////////////////////////////////////////////////////
    64 #endif
    65 
    66 
    67 // Local Variables:
    68 // mode: c++
    69 // fill-column: 100
    70 // c-file-style: "senf"
    71 // indent-tabs-mode: nil
    72 // ispell-local-dictionary: "american"
    73 // compile-command: "scons -u test"
    74 // comment-column: 40
    75 // End: