private int pushFunctionLut(System.Reflection.MethodInfo mi, string bindName)
{
int top = LuaDll.lua_gettop(L);
// Push global lut to the stack
string globalLutName = "__Lua.cs__LUT__";
LuaDll.lua_getfield(L, LuaDll.LUA_REGISTRYINDEX, globalLutName);
if (LuaDll.lua_isnil(L, -1))
{
// If the global lut does not exist then create it and push it onto the stack.
// Pop the nil value
LuaDll.lua_pop(L, 1);
// Push a new table and set it as the global globalLutName
LuaDll.lua_newtable(L);
LuaDll.lua_pushvalue(L, -1); // Dupe for setglobal call.
LuaDll.lua_setfield(L, LuaDll.LUA_REGISTRYINDEX, globalLutName);
}
int lut = LuaDll.lua_gettop(L);
Debug.Assert(lut == (top + 1));
// Push function lut to the stack.
string fullName = mi.ReflectedType.FullName + "." + bindName;
LuaDll.lua_getfield(L, lut, fullName);
if (LuaDll.lua_isnil(L, -1))
{
// If the function lut does not exist then create it.
// Pop off the nil result.
LuaDll.lua_pop(L, 1);
// Push in a new table
LuaDll.lua_newtable(L);
// Add the name to the table as kFunctionNameKey
LuaDll.lua_pushstring(L, bindName);
LuaDll.lua_setfield(L, -2, kFunctionNameKey);
// Add this to the global lut, keyed on FullName
LuaDll.lua_pushvalue(L, -1);
LuaDll.lua_setfield(L, lut, fullName);
}
// Remove the global lut
LuaDll.lua_remove(L, lut);
// Now we have the function lut at the top of the stack.
int result = LuaDll.lua_gettop(L);
Debug.Assert(result == top + 1);
// Return the stack position of the lut.
return(result);
}