#include <chaiscript/chaiscript.hpp>
#include <chaiscript/utility/utility.hpp>
#include <chaiscript/chaiscript_stdlib.hpp>

#include <iostream>


class A
{
public:
	A() {}
	virtual ~A() {}
};

class B : public A
{
public:
	B() : A() {}
	virtual ~B() {}
};

int main(int ac, char** av)
{
	chaiscript::ChaiScript chai(chaiscript::Std_Lib::library());

	//-------------------------------------------------------------------------

	chai.add(chaiscript::user_type<A>(), "A");

	chai.add(chaiscript::user_type<B>(), "B");
	chai.add(chaiscript::base_class<A, B>());

	chai.add(chaiscript::fun([](const B * test)
	{
		std::cout << "ok" << std::endl;
	}), "CppFunctWithBArg");

	chai.add(chaiscript::fun([]() -> A*
	{
		return ((A*) new B());
	}), "Create");

	try
	{
		chai.eval(R"(
		var inst = Create() // A*

		// it prints "A"
		inst.type_name().print() 

		// Ok it is casted using conversion
		CppFunctWithBArg(inst)

		// Define a function with B as argument
		def ChaiFuncWithBArg(B inst)
		{
			print("ok")
		}
	
		// don't work
		ChaiFuncWithBArg(inst)
		)");
	}
	catch (chaiscript::exception::eval_error e)
	{
		std::cout << e.what() << std::endl;
		std::cout << e.pretty_print() << std::endl;
	}
	catch (std::exception e)
	{
		std::cout << e.what() << std::endl;
	}
}

A
ok
Error: "Guard evaluation failed with function 'ChaiFuncWithBArg'"
Error: "Guard evaluation failed with function 'ChaiFuncWithBArg'" during evaluation at (__EVAL__ 17, 3)

  __EVAL__ (17, 3) 'ChaiFuncWithBArg(inst)'