JTemplate.cc File Reference

Example program to test JLANG::JTemplate class. More...

#include <iostream>
#include <string>
#include <istream>
#include <ostream>
#include "JLang/JTemplate.hh"
#include "JLang/JTypeList.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"

Go to the source code of this file.

Functions
int	main (int argc, char **argv)

Detailed Description

Example program to test JLANG::JTemplate class.

Author

mdejong

Definition in file JTemplate.cc.

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 44 of file JTemplate.cc.

{
  using namespace std;
 
  int          debug;
 
  try {
 
    JParser<> zap("Example program to test object referencing.");
 
    zap['d'] = make_field(debug)   = 3;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
  using namespace JPP;
 
 
  {
    JTemplate<string> object;
    
    object = string("aap");
 
    object.set(string("noot"));            // exact match
    object.set("mies");                    // implicit cast through std::string
    
    object.get<string>() += " says ";      // exact match 
    //object.get<int>();                   // gives compiler error
    
    object->append("\"hello world\"");     // smart pointer
    
    cout << object << endl;
  }
 
  {    
    class JTemplate_t :
      public JTemplate<JTYPELIST<std::string, float, int>::typelist>
    {};
    
    JTemplate_t object;
 
    object.get<string>() = "abc";          // exact match
    object.get<int>()    = -1;             // exact match
    object.get<float>()  = -0.99;          // exact match
 
    //object.set("hello world");           // gives compiler error
    object.set(string("aap noot mies"));   // exact match
    object.set<true>("hello world");       // allow cast
    object.set(777);                       // exact match
    object.set(123.456f);                  // exact match
    //object.set(123.456);                 // gives compiler error (argument is double)
    
    cout << object << endl;
  }
 
  {
    JTemplate<JTYPELIST<__C__, __B__, __A__>::typelist> object;
    
    object.get<__A__>() = "a";             // exact match
    object.get<__B__>() = "b";             // exact match
    object.get<__C__>() = "c";             // exact match
 
    cout << object.get<__C__>()            // exact match
         << " == "
         << object.get<__A__, true>()      // first match
         << endl;
  }
}