JPrintHelper.cc

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#include <iostream>
#include <iomanip>
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
#include "JLang/JPrintHelper.hh"
#include "JLang/JStreamAvailable.hh"
 
 
namespace {
 
  struct __A__ {
    const char* __str__() const
    {
      return "__A__::__str__()";
    }
  };
 
  struct __B__ {
    friend std::ostream& operator<<(std::ostream& out, const __B__& object)
    {
      return out << "__B__::operator<<()";
    }
  };
 
  struct __C__ {
    const char* __str__() const
    {
      return "__C__::__str__()";
    }
 
    friend std::ostream& operator<<(std::ostream& out, const __C__& object)
    {
      return out << "__C__::operator<<()";
    }
  };
 
  struct __D__ {};
}
 
 
/**
 * \file
 *
 * Example program to test JLANG::JPrintHelper class.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
 
  int debug;
 
  try {
 
    JParser<> zap("Example program to test print helper.");
 
    zap['d'] = make_field(debug)     = 0;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  __A__ a;
  __B__ b;
  __C__ c;
  //__D__ d;
 
  cout << JStreamAvailable<__A__>::has_ostream << endl;
  cout << JStreamAvailable<__B__>::has_ostream << endl;
  cout << JStreamAvailable<__C__>::has_ostream << endl;
  cout << JStreamAvailable<__D__>::has_ostream << endl;
  
  cout << a << endl;
  cout << b << endl;
  cout << c << endl;
  //cout << d << endl;  // compiler error
}