forloop.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
 
#ifndef DUNE_COMMON_FORLOOP_HH
#define DUNE_COMMON_FORLOOP_HH
 
#include <utility>
 
namespace Dune
{
 
#ifndef DOXYGEN
  // GenericForLoop
  // --------------
 
  template< template< class, class > class Operation, template< int > class Value, int first, int last >
  class GenericForLoop
    : public Operation< Value< first >, GenericForLoop< Operation, Value, first+1, last > >
  {
    static_assert( (first <= last), "GenericForLoop: first > last" );
  };
 
  template< template< class, class > class Operation, template< int > class Value, int last >
  class GenericForLoop< Operation, Value, last, last >
    : public Value< last >
  {};
 
  // ForLoopHelper
  // -------------
 
  namespace ForLoopHelper
  {
 
    template< class A, class B >
    struct Apply
    {
 
      template< typename... Params >
      static void apply ( Params&&... params )
      {
        A::apply( std::forward<Params>(params)... );
        B::apply( std::forward<Params>(params)... );
      }
 
    };
 
  } // end namespace ForLoopHelper
 
#endif
 
 
  template< template< int > class Operation, int first, int last >
  class ForLoop
    : public GenericForLoop< ForLoopHelper::Apply, Operation, first, last >
  {
    static_assert( (first <= last), "ForLoop: first > last" );
  };
 
}
 
#endif // #ifndef DUNE_COMMON_FORLOOP_HH