JMultiEquals.cc

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#include <iostream>
#include <iomanip>
 
#include "JLang/JEquals.hh"
#include "JLang/JMultiEquals.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
namespace {
 
  using namespace JPP;
  
 
  struct __A__ :
    public JEquals<__A__>
  {
    __A__() :
      value(0)
    {}
 
    __A__(int __value) :
      value(__value)
    {}
 
    bool equals(const __A__& object) const
    {
      return this->value == object.value;
    }
 
    friend std::ostream& operator<<(std::ostream& out, const __A__& object)
    {
      return out << object.value;
    }
    
    int value;
  };
  
 
  struct __B__ :
    public JEquals<__B__>
  {
    __B__() :
      value(0)
    {}
 
    __B__(int __value) :
      value(__value)
    {}
 
    bool equals(const __B__& object) const
    {
      return this->value == object.value;
    }
 
    friend std::ostream& operator<<(std::ostream& out, const __B__& object)
    {
      return out << object.value;
    }
    
    int value;
  };
 
 
  struct __C__ :
    public __A__,
    public __B__,
    public JMultiEquals<__C__, JTYPELIST<__A__, __B__>::typelist>
  {
    __C__(const int a,
          const int b) :
      __A__(a),
      __B__(b)
    {}
 
    friend std::ostream& operator<<(std::ostream& out, const __C__& object)
    {
      return out << static_cast<const __A__&>(object) << ' '
                 << static_cast<const __B__&>(object);
    }    
  };
 
  
  /**
   * Print.
   *
   * \param  OUT     output stream
   * \param  OP      operator
   * \param  A       first  object
   * \param  B       second object
   */
#define PRINT(OUT,OP,A,B) \
  OUT << "(" << A << ") " << #OP " (" << B << ") => " << (A OP B) << std::endl;
}
 
/**
 * \file
 *
 * Example program to test JLANG::JMultiEquals class.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  int debug;
 
  try {
 
    JParser<> zap("Example program to test object comparisons.");
 
    zap['d'] = make_field(debug)     = 3;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
  __C__ c1(1,1);
  __C__ c2(1,1);
  __C__ c3(0,1);
  __C__ c4(1,0);
 
  PRINT(cout, ==, c1, c2);
  PRINT(cout, !=, c1, c2);
  PRINT(cout, ==, c1, c3);
  PRINT(cout, !=, c1, c3);
  PRINT(cout, ==, c1, c4);
  PRINT(cout, !=, c1, c4);
 
  ASSERT(c1 == c2);
  ASSERT(c1 != c3);
  ASSERT(c1 != c4);
  
  return 0;
}