collectorstream.hh

// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_COMMON_TEST_COLLECTORSTREAM_HH
#define DUNE_COMMON_TEST_COLLECTORSTREAM_HH
 
#include <sstream>
#include <string>
#include <functional>
 
 
#include <dune/common/typeutilities.hh>
 
 
namespace Dune {
 
 
 
class CollectorStream : public std::ostringstream
{
public:
 
  template<class CallBack,
    Dune::disableCopyMove<CollectorStream, CallBack> = 0>
  CollectorStream(CallBack&& callBack) :
    callBack_(callBack)
  {}
 
  CollectorStream(const CollectorStream& other) = delete;
 
  CollectorStream(CollectorStream&& other) :
    callBack_(other.callBack_)
  {
    (*this) << other.str();
    other.callBack_ = [](std::string){};
  }
 
  ~CollectorStream()
  {
    callBack_(this->str());
  }
 
private:
  std::function<void(std::string)> callBack_;
};
 
 
 
} // namespace Dune
 
 
#endif // DUNE_COMMON_TEST_COLLECTORSTREAM_HH