Luabind: enums demonstration

Consider the following code:

	#include <string>
	#include <iostream>
	#include <luabind/luabind.hpp>
	struct A
	{
	A() {}
	enum
	{
	first = 1
	, second = 2
	, thirds = 3
	};
	};
	extern "C" int init(lua_State* L)
	{
	using namespace luabind;
	open(L);
	module(L)
	[
	class_<A>("A")
	.def(constructor<>())
	.enum_("constants")
	[
	value("first", 1),
	value("second", 2),
	value("third", 3)
	]
	];
	return 0;
	}

view raw enums.cpp hosted with ❤ by GitHub

When run:

kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/enums$ cat test.lua 
package.loadlib('./testclass.so', 'init')()
print(A.first)
print(A.second)
print(A.third)
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/enums$ cat ./commands.bash 
#!/bin/bash
g++ testclass.cpp -I/usr/include/lua5.2/ -c -fPIC
g++ -shared -Wl,--whole-archive -o testclass.so testclass.o -lluabind -Wl,--no-whole-archive
lua test.lua
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/enums$ ./commands.bash 
1
2
3
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/enums$ 

You actually don't have to define the enum in the C++ struct A. Try removing it and the test.lua will still work.