#include <triqs/clef/clef.hpp>
#include <triqs/clef/io.hpp>
#define TEST(X) std::cout << BOOST_PP_STRINGIZE((X)) << " ---> "<< (X) <<std::endl;

struct F1{ 
 double v; 
 F1(double v_): v(v_){} 
 F1(F1 const &) = delete; // non copyable
 F1(F1 &&x) : v(x.v) { std::cerr << "Moving F1 "<< v<<std::endl;}

 double operator() (double x) const { return 10*x;}

 TRIQS_CLEF_IMPLEMENT_LAZY_CALL(F1);

 template<typename Fnt> friend void triqs_clef_auto_assign (F1 & x, Fnt f) { x.v++; std::cerr<< " called triqs_clef_auto_assign "<< f(100)<<std::endl;}
 
 friend std::ostream & operator<<(std::ostream & out, F1 const & x) { return out<<"F1";}
};


struct F2 {

 double v; 
 F2() {v=0;}

 double operator()(double x, double y) const { return 10*x + y;}

 TRIQS_CLEF_IMPLEMENT_LAZY_CALL(F2);

 template<typename Fnt> friend void triqs_clef_auto_assign (F2 const & x, Fnt f) { std::cerr<< " called F2 triqs_clef_auto_assign "<< f(10,20)<<std::endl;}

 friend std::ostream & operator<<(std::ostream & out, F2 const & x) { return out<<"F2";}
};


using namespace triqs::clef;

triqs::clef::placeholder <1> x_; 
triqs::clef::placeholder <2> y_; 
triqs::clef::placeholder <3> z_; 
namespace tql= triqs::clef;