JAutoMap.cc

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#include <iostream>
#include <iomanip>
#include <string>

#include "JTools/JAutoMap.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


namespace {

  using namespace JPP;

  // type definition of map

  typedef JAutoMap<int, std::string>              JAutoMap_t;
  typedef JAutoMap_t::value_type                  value_type;


  using JLANG::JType;

  struct JElement_t : public value_type 
  {
    template<class T>
    JElement_t(JType<T>);
  };

  // specialiation of constructor of auxiliary class

  template<> JElement_t::JElement_t(JType<char>)   : value_type(1, "char") {}
  template<> JElement_t::JElement_t(JType<int>)    : value_type(2, "int") {}
  template<> JElement_t::JElement_t(JType<float>)  : value_type(3, "float") {}
  template<> JElement_t::JElement_t(JType<double>) : value_type(4, "double") {}
}
                                    
namespace JTOOLS {

  // specialiation of member method JAutoMap_t::getAutoElement

  template<> template<> value_type JAutoMap_t::getAutoElement(JType<char>  ) { return value_type(1, "char"); }
  template<> template<> value_type JAutoMap_t::getAutoElement(JType<int>   ) { return value_type(2, "int"); }
  template<> template<> value_type JAutoMap_t::getAutoElement(JType<float> ) { return value_type(3, "float"); }
  template<> template<> value_type JAutoMap_t::getAutoElement(JType<double>) { return value_type(4, "double"); }
}



/**
 * \file
 *
 * Example program to test JTOOLS::JAutoMap class.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;

  int              debug;

  try {

    JParser<> zap("Example program to test automatic generation of map based on data types.");

    zap['d'] = make_field(debug)    = 0;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }


  using namespace JPP;

  typedef 
    JTypeList<int,
    JTypeList<char,
    JTypeList<double,
    JTypeList<float> > > > JDataTypes_t;

  {
    JAutoMap_t zmap;
    
    zmap.insert<JDataTypes_t>();

    cout << "First method" << endl;
    
    for (JAutoMap_t::const_iterator i = zmap.begin(); i != zmap.end(); ++i) {
      cout << setw(2) << i->first << ' ' << i->second << endl;
    }
  }

  {
    JAutoMap_t zmap;
    
    zmap.insert<JDataTypes_t>(JAutomate<JElement_t>());
    
    cout << "Second method" << endl;

    for (JAutoMap_t::const_iterator i = zmap.begin(); i != zmap.end(); ++i) {
      cout << setw(2) << i->first << ' ' << i->second << endl;
    }
  }
}