JAbstractClass.hh

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#ifndef __JLANG__JABSTRACTCLASS__
#define __JLANG__JABSTRACTCLASS__
 
#include "JLang/JTest.hh"
 
/**
 * \author mdejong
 */
 
namespace JLANG {}
namespace JPP { using namespace JLANG; }
 
namespace JLANG {
 
  /**
   * Template class test for abstractness.
   */
  template<class T>
  class JAbstractClass :
    public JTest
  {
    using JTest::test;
    
    template<class U>
    static JTrue test(U (*)[1]);
 
  public:
    static const bool is_abstract = !JTEST(test<T>(0)); //!< true of class is abstract; else false
  };
}
 
#endif