JTemplateIO.cc

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#include <iostream>
#include <iomanip>
#include <sstream>
 
#include "JLang/JEquals.hh"
#include "JLang/JMultiEquals.hh"
#include "JLang/JTemplateWriter.hh"
#include "JLang/JTemplateReader.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::istream& operator>>(std::istream& in, __A__& object)
    {
      return in >> 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::istream& operator>>(std::istream& in, __B__& object)
    {
      return in >> object.value;
    }
 
    friend std::ostream& operator<<(std::ostream& out, const __B__& object)
    {
      return out << object.value;
    }
    
    int value;
  };
  
 
  struct __C__ :
    public JEquals<__C__>
  {
    __C__() :
      value(0)
    {}
 
    __C__(int __value) :
      value(__value)
    {}
 
    bool equals(const __C__& object) const
    {
      return this->value == object.value;
    }
 
    friend std::istream& operator>>(std::istream& in, __C__& object)
    {
      return in >> object.value;
    }
 
    friend std::ostream& operator<<(std::ostream& out, const __C__& object)
    {
      return out << object.value;
    }
    
    int value;
  };
 
  /**
   * Composite data structure.
   */
  struct __D__ :
    public __A__,
    public __B__,
    public __C__,
    public JMultiEquals<__D__, JTYPELIST<__A__, __B__, __C__>::typelist>,
    public JTemplateReader<std::istream, __D__, JTYPELIST<__A__, __B__, __C__>::typelist>,
    public JTemplateWriter<std::ostream, __D__, JTYPELIST<__A__, __B__, __C__>::typelist>
  {
    __D__() :
      __A__(),
      __B__(),
      __C__()
    {}
    
    __D__(const int a,
          const int b,
          const int c) :
      __A__(a),
      __B__(b),
      __C__(c)
    {}
  };
}
 
/**
 * \file
 *
 * Example program to test JLANG::JTemplateReader and JLANG::JTemplateWriter classes.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
 
  int debug;
 
  try {
 
    JParser<> zap("Example program to test template I/O.");
 
    zap['d'] = make_field(debug)     = 3;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
  using namespace JPP;
 
  const __D__ a(1,2,3);
 
  {
    stringstream io;
 
    io << a;
 
    __D__ b;
 
    io >> b;
  
    DEBUG("a = " << a << endl);
    DEBUG("b = " << b << endl);
 
    ASSERT(a == b);
  }
  {
    JTemplateWriter<ostream>::WHITE_SPACE = "|";
 
    stringstream io; 
 
    io << a;
    
    for (int value, i = 0; io >> value; ++i) {
 
      const int c = io.get();
 
      ASSERT((i <  2 && c == (int) '|') || 
             (i == 2 && c ==  EOF));
    }
  }
 
  return 0;
}