Function TMap_ToTable

Plugins/UnLua/Source/UnLua/Private/BaseLib/LuaLib_Map.cpp:299–342

* Convert the map to a Lua table */

 * Convert the map to a Lua table
 */
static int32 TMap_ToTable(lua_State* L)
{
    int32 NumParams = lua_gettop(L);
    if (NumParams != 1)
        return luaL_error(L, "invalid parameters");

    FLuaMap* Map = (FLuaMap*)(GetCppInstanceFast(L, 1));
    TMap_Guard(L, Map);

    if (!Map->KeyInterface->IsValid())
        return luaL_error(L, TCHAR_TO_UTF8(*FString::Printf(TEXT("invalid TMap key type:%s"), *Map->ValueInterface->GetName())));

    if (!Map->ValueInterface->IsValid())
        return luaL_error(L, TCHAR_TO_UTF8(*FString::Printf(TEXT("invalid TMap value type:%s"), *Map->ValueInterface->GetName())));

    void* MemData = FMemory::Malloc(sizeof(FLuaArray), alignof(FLuaArray));
    FLuaArray* Keys = Map->Keys(MemData);
    Keys->Inner->Initialize(Keys->ElementCache);
    lua_newtable(L);
    for (int32 i = 0; i < Keys->Num(); ++i)
    {
        Keys->Get(i, Keys->ElementCache);
        Keys->Inner->Read(L, Keys->ElementCache, true);

        void* ValueCache = (uint8*)Map->ElementCache + Map->MapLayout.ValueOffset;
        Map->ValueInterface->Initialize(ValueCache);
        bool bSuccess = Map->Find(Keys->ElementCache, ValueCache);
        if (bSuccess)
        {
            Map->ValueInterface->Read(L, Map->ValueInterface->GetOffset() > 0 ? Map->ElementCache : ValueCache, true);
        }
        else
        {
            lua_pushnil(L);
        }

        lua_rawset(L, -3);

        Map->ValueInterface->Destruct(ValueCache);
    }
    Keys->Inner->Destruct(Keys->ElementCache);
    FMemory::Free(MemData);
    return 1;
}

static const luaL_Reg TMapLib[] =
{