BinaryComposeFunctionAdapter.h

Go to the documentation of this file.

// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2017.
//
// This software is released under a three-clause BSD license:
//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//  * Neither the name of any author or any participating institution
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// For a full list of authors, refer to the file AUTHORS.
// --------------------------------------------------------------------------
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL ANY OF THE AUTHORS OR THE CONTRIBUTING
// INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg $
// $Authors: Anton Pervukhin <Anton.Pervukhin@CeBiTec.Uni-Bielefeld.DE> $
// --------------------------------------------------------------------------
//

#ifndef OPENMS_CONCEPT_BINARYCOMPOSEFUNCTIONADAPTER_H
#define OPENMS_CONCEPT_BINARYCOMPOSEFUNCTIONADAPTER_H

#include <functional>

namespace OpenMS
{

  template <class OP1, class OP2, class OP3>
  class BinaryComposeFunctionAdapter :
    public std::binary_function<typename OP2::argument_type,
                                typename OP3::argument_type,
                                typename OP1::result_type>
  {
private:
    OP1 op1_;    // process: op1(op2(x),op3(y))
    OP2 op2_;
    OP3 op3_;
public:
    BinaryComposeFunctionAdapter(const OP1 & o1, const OP2 & o2, const OP3 & o3) :
      op1_(o1), op2_(o2), op3_(o3)
    {
    }

    typename OP1::result_type
    operator()(const typename OP2::argument_type & x,
               const typename OP3::argument_type & y) const
    {
      return op1_(op2_(x), op3_(y));
    }

  };

  template <class OP1, class OP2, class OP3>
  inline BinaryComposeFunctionAdapter<OP1, OP2, OP3>
  binaryCompose(const OP1 & o1, const OP2 & o2, const OP3 & o3)
  {
    return BinaryComposeFunctionAdapter<OP1, OP2, OP3>(o1, o2, o3);
  }

} // namespace OpenMS

#endif // OPENMS_CONCEPT_BINARYCOMPOSEFUNCTIONADAPTER_H