CPredicate.h

#pragma once

#if defined(CPredicate_RECURSES)
#error Recursive header files inclusion detected in CPredicate.h
#else // defined(CPredicate_RECURSES)

#define CPredicate_RECURSES

#if !defined CPredicate_h

#define CPredicate_h

// Inclusions
#include <iostream>
#include "DGtal/base/Common.h"

namespace DGtal
{

  // class CPredicate
  template <typename T, typename TElement>
    struct CPredicate : boost::Assignable<T>
  {
    // ----------------------- Concept checks ------------------------------
  public:
    typedef TElement Element;

    BOOST_CONCEPT_USAGE( CPredicate )
    {
      checkConstConstraints();
    }

    void checkConstConstraints() const
    {
      // x( p ) returns bool.
      ConceptUtils::sameType( myBool, myPred.operator() ( myElement ) );
    }
    // ------------------------- Private Datas --------------------------------
  private:
    T myPred;
    Element myElement;
    bool myBool;
    // ------------------------- Internals ------------------------------------
  private:

  }; // end of concept CPredicate

} // namespace DGtal

//                                                                           //

#endif // !defined CPredicate_h

#undef CPredicate_RECURSES
#endif // else defined(CPredicate_RECURSES)