枚舉標誌意想不到的結果

我使用一個枚舉作爲一個標誌枚舉標誌意想不到的結果

[Flags] 
public enum SystemStatusEnum : long 
{ 
    Line_seizure = 1 << 0, 
    Off_hook = 1 << 1, 
    Initial_handshake_received = 1 << 2, 
    Download_in_progress = 1 << 3, 
    Dialer_delay_in_progress = 1 << 4, 
    Using_backup_phone = 1 << 5, 
    Listen_in_active = 1 << 6, 
    Two_way_lockout = 1 << 7, 

    Ground_fault = 1 << 8, 
    Phone_fault = 1 << 9, 
    Fail_to_communicate = 1 << 10, 
    Fuse_fault = 1 << 11, 
    Box_tamper = 1 << 12, 
    Siren_tamper_trouble = 1 << 13, 
    Low_Battery = 1 << 14, 
    AC_fail = 1 << 15, 

    Expander_box_tamper = 1 << 16, 
    Expander_AC_failure = 1 << 17, 
    Expander_low_battery = 1 << 18, 
    Expander_loss_of_supervision = 1 << 19, 
    Expander_auxiliary_output_over_current = 1 << 20, 
    Auxiliary_communication_channel_failure = 1 << 21, 
    Expander_bell_fault = 1 << 22, 

    _6_digit_PIN_enabled = 1 << 24, 
    Programming_token_in_use = 1 << 25, 
    PIN_required_for_local_download = 1 << 26, 
    Global_pulsing_buzzer = 1L << 27, 
    Global_Siren_on = 1 << 28, 
    Global_steady_siren = 1 << 29, 
    Bus_device_has_line_seized = 1 << 30, 
    Bus_device_has_requested_sniff_mode = 1 << 31, 

    Dynamic_battery_test = 1 << 32, 
    AC_power_on = 1L << 33, 
    Low_battery_memory = 1L << 34, 
    Ground_fault_memory = 1L << 35, 
    Fire_alarm_verification_being_timed = 1L << 36, 
    Smoke_power_reset = 1L << 37, 
    _50_Hz_line_power_detected = 1L << 38, 
    Timing_a_high_voltage_battery_charge = 1L << 39, 

    Communication_since_last_autotest = 1L << 40, 
    Power_up_delay_in_progress = 1L << 41, 
    Walk_test_mode = 1L << 42, 
    Loss_of_system_time = 1L << 43, 
    Enroll_requested = 1L << 44, 
    Test_fixture_mode = 1L << 45, 
    Control_shutdown_mode = 1L << 46, 
    Timing_a_cancel_window = 1L << 47, 

    Call_back_in_progress = 1L << 55, 

    Phone_line_faulted = 1L << 56, 
    Voltage_present_interrupt_active = 1L << 57, 
    House_phone_off_hook = 1L << 58, 
    Phone_line_monitor_enabled = 1L << 59, 
    Sniffing = 1L << 60, 
    Last_read_was_off_hook = 1L << 61, 
    Listen_in_requested = 1L << 62, 
    Listen_in_trigger = 1L << 63, 
}

下面我宣佈我的標誌=

SystemStatusEnum SystemStatusFlags = 
      SystemStatusEnum.Off_hook | 
      SystemStatusEnum.Phone_fault | 
      SystemStatusEnum.Expander_bell_fault | 
      SystemStatusEnum._6_digit_PIN_enabled | 
      SystemStatusEnum.Timing_a_high_voltage_battery_charge | 
      SystemStatusEnum.Loss_of_system_time | 
      SystemStatusEnum.Call_back_in_progress | 
      SystemStatusEnum.Phone_line_faulted;

在這裏，我的枚舉轉換爲8個字節

// System Status Flags 
     Byte[] SystemStatusBytes = new Byte[8]; 

     SystemStatusBytes[0] = (byte)((long)SystemStatusFlags & 0xff); 
     SystemStatusBytes[1] = (byte)(((long)SystemStatusFlags >> 8) & 0xff); 
     SystemStatusBytes[2] = (byte)(((long)SystemStatusFlags >> (8 * 2)) & 0xff); 
     SystemStatusBytes[3] = (byte)(((long)SystemStatusFlags >> (8 * 3)) & 0xff); 
     SystemStatusBytes[4] = (byte)(((long)SystemStatusFlags >> (8 * 4)) & 0xff); 
     SystemStatusBytes[5] = (byte)(((long)SystemStatusFlags >> (8 * 5)) & 0xff); 
     SystemStatusBytes[6] = (byte)(((long)SystemStatusFlags >> (8 * 6)) & 0xff); 
     SystemStatusBytes[7] = (byte)(((long)SystemStatusFlags >> (8 * 7)) & 0xff); 

     for (int i = 0; i < SystemStatusBytes.Count(); i++) 
     { 
      MessageBytes[Index++] = SystemStatusBytes[i]; 
     }

在這裏，我將它們轉換回列表

private void ParseSystemStatusFlags(int Flag1, int Flag2, int Flag3, int Flag4, int Flag5, int Flag6, int Flag7, int Flag8) 
    { 
     long flagsRaw = (long)(Flag1 | Flag2 << 8 | Flag3 << (8 * 2) | Flag4 << (8 * 3) | Flag5 << (8 * 4) | Flag6 << (8 * 5) | Flag7 << (8 * 6) | Flag8 << (8 * 7)); 
     SystemStatusEnum flags = (SystemStatusEnum)flagsRaw; 
     SystemStatus_List = flags.GetFlags().ToList(); 
    }

但是，我收到了意想不到的結果，因此得到了 Off_hook,Two_way_lockout,Phone_fault,Fuse_fault,Expander_bell_fault,_6_digit_PIN_enabled。

所以一些標誌是正確的，但是例如Two_way_lockout沒有在我的枚舉中聲明。

我在做什麼錯？

來源

2013-06-21 Robby Smet

我懷疑這可能部分<<和|之間的優先發布，部分是轉移int值，而不是long值的問題。試試這個：

long flagsRaw = ((long) Flag1 << 0) | 
       ((long) Flag2 << 8) | 
       ((long) Flag3 << (8 * 2)) | 
       ((long) Flag4 << (8 * 3)) | 
       ((long) Flag5 << (8 * 4)) | 
       ((long) Flag6 << (8 * 5)) | 
       ((long) Flag7 << (8 * 6)) | 
       ((long) Flag8 << (8 * 7));

我沒有檢查優先規則，看看是否這就是問題所在，但最起碼以上是它的意圖更加清晰。

來源

2013-06-21 08:53:49

現在，我得到了不同的結果，我得到了我想要的結果，但也Bus_device_has_requested_sniff_mode。 –

好的，我發現了這個問題。我將我的代碼編輯到代碼片段中，並將枚舉中的每一個都更改爲1L，現在它可以工作。 –

長，所以你可以actualy只用64簽署型 - 1位，Listen_in_trigger = 1L < < 63是不正確的

來源

2013-06-21 08:59:00

不，你可以使用全部64位 - 只是'1L << 63'是負數。 –

枚舉標誌意想不到的結果

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