JConstructor.hh

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#ifndef __JLANG__JCONSTRUCTOR__
#define __JLANG__JCONSTRUCTOR__
 
#include <utility>
 
#include "JLang/JTest.hh"
 
/**
 * \author mdejong
 */
 
namespace JLANG {}
namespace JPP { using namespace JLANG; }
 
namespace JLANG {
 
  /**
   * Template class test for availability of a suitable constructor <tt>JType_t(const JArgument_t)</tt>.
   */
  template<class JType_t, class JArgument_t>
  class JConstructor :
    public JTest
  {
    using JTest::test;
      
    static JTrue test(const JType_t&);
      
  public:
    static const bool has_constructor = JTEST(test(std::declval<JArgument_t>()));   //!< true if JType_t can be constructed from JArgument_t; else false    
  };
}
 
#endif