Elba is a simple-to-use library designed to enable the easy bridging of the chasm between the worlds of C++ and Lua 5.1. At the moment, Elba is incomplete and lacks documentation, so it is not recommended for production usage.

#include <elba.hpp>
#include <iostream>

void report(const char* str)
{
	std::cout << str << std::endl;
}

int main()
{
	elba::state L;
	L.open_libs();

	elba::reference print = L.globals()["print"];
	print("C++ to Lua, C++ to Lua, over *kzzzht*");

	L.globals()["report"] = report;
	L.do_string("report('Lua to C++, report! *kzzzht*')");

	return 0;
}

#include <elba.hpp>

class Counter
{
public:
	Counter() : counter(0) {}

	void increment() { ++counter; }
	void decrement() { --counter; }
	int count() const { return counter; }

private:
	int counter;
};

int main()
{
	elba::state L;
	L.open_libs();

	elba::class_binder<Counter>(L, "Counter")
		.constructor()
		.set("increment", &Counter::increment)
		.set("decrement", &Counter::decrement)
		.set("count", &Counter::count)
		.set("primary_counter", Counter());

	L.do_string(
		"a = Counter.new() \
		print(a:count()) \
		a:increment() \
		print(a:count()) \
		print(Counter.primary_counter:count())"
	);

	return 0;
}

• operator[]-style table manipulation
• primitive type and std::string assignment/retrieval
• binding functions
• retrieval of functions from the Lua state
• class binding

• class properties
• table iterators
• write documentation

Copyright (c) 2011-2012 Mak Nazečić-Andrlon

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.