// example of Rocka: An interpreted, duck-typed, Object-Oriented and Functional programming language

// Example source code of Rocka
// #$RKROOT/lib/standard/io.rk
//

namespace Standard.IO;

// defined in standard_io.cpp
extern public print(msg string) bool;

namespace RockaExample;

import Standard.IO;

class EntryPoint {
	main -> void {
		println("Hello World".nice());
		println("Here are come characters: ");
		printChars("foo");
	}
	
	nice(text string) -> string {
		return text.Upper();
	}
	
	printChars(s string) {
		s.for_each(print)
	}
}

//
// standard_io.cpp
//

std::shared_ptr<rocka::Vm> vm = std::make_shared<rocka::Vm>();
vm->land()->namespace("Standard.IO")->registerFunction("print", [] (std::shared_ptr<rocka::VM> vm, const rocka::Value& value, rocka::Value& result) {
	try {
		std::cout << value.at(0).as<std::string>() << std::endl;
	} catch(const exception& ex) {
		result.setBool(false)
		return
	}
	result.setBool(true)
});

// compile with: cpp standard_io.cpp -lrocka -o standard_io.a