easy C function wrapper

[morgoth990]

Don't know if anyone can find this useful.
I have implemented a macro/template to automatically generate the int (*lua_CFunction)(lua_State* L) wrapper.
It pops arguments, calls the C function and push the return value (if not void) into the lua stack.
The macro allow to wrap functions like this:

void TestVoid()
{
}

float TestFloat()
{
	return 6;
}

string TestStringWithArguments(bool a1, float b2, string s3, int i4, int i5, int i6, int i7, int i8, int i9, int i10)
{
	return "retValueStr";
}

static const luaL_Reg funcs[] = {
	{"test_void", lua_CFunctionWrapper(TestVoid)},
	{"test_float", lua_CFunctionWrapper(TestFloat)},
	{"test_string_args", lua_CFunctionWrapper(TestStringWithArguments)},
	{NULL, NULL},
};

lua_pushvalue(L, LUA_GLOBALSINDEX);
luaL_register(L, NULL, funcs);
lua_pop(L, 1);

Currently there is a limit of 10 arguments max but can easly increased.
Implementation:
lua_CFunctionWrapper.h

[zeux]

I took a stab at implementing something similar but using C++17 variadic templates: https://gist.github.com/zeux/6779d59c9e3edf640ad7d0b586710ea0