Method Bind

Plugins/UnLua/Source/UnLua/Private/Registries/DelegateRegistry.cpp:143–167

    }

    void FDelegateRegistry::Bind(lua_State* L, int32 Index, FScriptDelegate* Delegate, UObject* SelfObject)
    {
        check(lua_type(L, Index) == LUA_TFUNCTION);
        const auto LuaFunction = lua_topointer(L, Index);
        auto& Info = Delegates.FindChecked(Delegate);
        if (!Info.Owner.IsValid())
            Info.Owner = SelfObject;

        const auto DelegatePair = FLuaDelegatePair(SelfObject, LuaFunction);
        const auto Cached = CachedHandlers.Find(DelegatePair);
        if (Cached && Cached->IsValid())
        {
            (*Cached)->BindTo(Delegate);
            Info.Handlers.Add(*Cached);
            return;
        }

        lua_pushvalue(L, Index);
        const auto Ref = luaL_ref(L, LUA_REGISTRYINDEX);
        const auto Handler = CreateHandler(Ref, Info.Owner.Get(), SelfObject);
        Handler->BindTo(Delegate);
        Env->AutoObjectReference.Add(Handler);
        CachedHandlers.Add(DelegatePair, Handler);
        Info.Handlers.Add(Handler);
    }

    void FDelegateRegistry::Unbind(void* Delegate)
    {