JComparisonToolkit.hh

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#ifndef __JEEP__JCOMPARISONTOOLKIT__
#define __JEEP__JCOMPARISONTOOLKIT__
 
#include <string.h>
#include <type_traits>
 
#include "JLang/JComparisonAvailable.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JEEP {}
namespace JPP { using namespace JEEP; }
 
namespace JEEP {
 
  using JLANG::JComparisonAvailable;
 
    
 
  /**
   * Comparison of comparable objects.
   *
   * \param  first         first  object
   * \param  second        second object
   * \return               true if objects are equal; else false
   */
  template<class T>
  inline bool compareObjects(const T& first,
                             const T& second,
                             std::true_type)
  {
    return first == second;
  }
    
 
  /**
   * Comparison of uncomparable objects.
   *
   * \param  first         first  object
   * \param  second        second object
   * \return               false
   */
  template<class T>
  inline bool compareObjects(const T& first,
                             const T& second,
                             std::false_type)
  {
    return false;
  }
    
 
  /**
   * Comparison of objects.
   *
   * \param  first         first  object
   * \param  second        second object
   * \return               true if objects are comparable and equal; else false
   */
  template<class T>
  inline bool compareObjects(const T& first,
                             const T& second)
  { 
    return compareObjects(first, second, std::bool_constant<JComparisonAvailable<T>::has_eq>());
  }
    
 
  /**
   * Comparison of comparable objects.
   *
   * \param  first         first  object
   * \param  second        second object
   * \return               true if objects are equal; else false
   */
  template<int N>
  inline bool compareObjects(const char (&first) [N],
                             const char (&second)[N])
  {
    return strcmp(first, second) == 0;
  }
    
}
 
#endif