public void PushCSObject(object o)
{
if (o == null)
{
LuaLib.lua_pushnil(L);
return;
}
int refId;
if (!_objectUserdataRefIds.TryGetValue(o, out refId))
{
LuaBindMetatable metatable = Bindings.GetMetatable(o.GetType(), LuaBindMetatableType.Instance);
int objectUserdataValue = _newObjectUserdataValue++;
LuaLib.wutlua_newuserdata(L, objectUserdataValue); // |ud
metatable.Push(); // |ud|mt
LuaLib.lua_setmetatable(L, -2); // |ud // ud.metatable = mt
refId = LuaLib.luaL_ref(L, LuaIndices.LUA_REGISTRYINDEX); // |
_objects[objectUserdataValue] = o;
_objectUserdataRefIds[o] = refId;
}
LuaLib.lua_rawgeti(L, LuaIndices.LUA_REGISTRYINDEX, refId); // |ud
}
static int _GetBaseMetatable(IntPtr L)
{
LuaState luaState = LuaState.Get(L);
int refId;
LuaLib.lua_pushstring(L, "__refId"); // |mt|s
LuaLib.lua_rawget(L, 1); // |mt|v // v = mt.s
refId = (int)LuaLib.lua_tonumber(L, -1);
LuaLib.lua_pop(L, 1); // |mt
LuaBindMetatable self = luaState.Bindings.GetMetatableByRefId(refId);
Type baseType = self._type.BaseType;
if (baseType == null)
{
// No base type
LuaLib.lua_pushstring(L, "__base"); // |mt|s
LuaLib.lua_pushboolean(L, false); // |mt|s|b
LuaLib.lua_rawset(L, -3); // |mt // mt.__base = false
}
else
{
LuaBindMetatable baseMetatable = luaState.Bindings.GetMetatable(baseType, self._metatableType);
LuaLib.lua_pushstring(L, "__base"); // |mt|s
baseMetatable.Push(); // |mt|s|basemt
LuaLib.lua_rawset(L, -3); // |mt // mt.__base = basemt
}
return(0);
}
public LuaBindMetatable GetMetatable(Type type, LuaBindMetatableType metatableType)
{
LuaBindMetatable metatable;
var metatables = _metatables[(int)metatableType];
if (!metatables.TryGetValue(type, out metatable))
{
metatable = new LuaBindMetatable(_luaState, type, metatableType);
metatables[type] = metatable;
}
return(metatable);
}
public void RegisterType(Type type)
{
UnityEngine.Debug.Assert(!_typeTables.ContainsKey(type));
IntPtr L = _luaState.L;
LuaTable typeTable = new LuaTable(_luaState);
typeTable.Push(); // |t
LuaLib.lua_pushstring(L, "__typeName"); // |t|sk
LuaLib.lua_pushstring(L, type.ToString()); // |t|sk|sv
LuaLib.lua_rawset(L, -3); // |t // t.__typeName = typeName
LuaBindMetatable metatable = GetMetatable(type, LuaBindMetatableType.Type);
metatable.Push(); // |t|mt
LuaLib.lua_setmetatable(L, -2); // |t // t.metatable = mt
LuaLib.lua_pop(L, 1); // |
_typeNames.Add(type.ToString(), type);
_typeTables[type] = typeTable;
}
public void RegisterMetatableRefId(int refId, LuaBindMetatable metatable)
{
_metatableRefIds.Add(refId, metatable);
}