/// <summary>
///
/// </summary>
/// <returns></returns>
public byte[] ToBytes(DataFieldValueProvider valueProvider)
{
if (valueProvider==null)
{
throw new ArgumentNullException("valueProvider");
}
MemoryStream ms = new MemoryStream();
foreach (DataField df in this.DataFields)
{
// ȷ��df����д����ȷ��λ��
//
if (ms.Length != df.BeginPosition)
{
string errmsg = string.Format(
"write datafield '{0}' data being position error, expect: {1}, but was: {2}",
df.Name, df.BeginPosition, ms.Length);
throw new InvalidDataException(errmsg);
}
if (!df.IsCRC)
{
if (df.IsLazy)
{
df.Value = valueProvider.GetValue(df.Name);
}
byte[] bs = df.Bytes;
if (bs == null)
{
string errmsg = string.Format("datafield '{0}' Bytes null",
df.Name);
throw new InvalidOperationException(errmsg);
}
ms.Write(bs, 0, (int)bs.Length);
}
else
{
byte[] bs = ms.ToArray();
// 2011-12-30 crc begin position
//
//byte[] crcbs = this.CRCer.Calc(bs, 0, bs.Length);
int calcLen = bs.Length - this.CRCBegin;
CheckCRCLength(calcLen);
byte[] crcbs = this.CRCer.Calc(bs, this.CRCBegin, calcLen);
df.Bytes = crcbs;
ms.Write(crcbs, 0, (int)crcbs.Length);
}
}
return ms.ToArray();
}
/// <summary>
///
/// </summary>
/// <param name="device"></param>
/// <returns></returns>
public override byte[] OnCreateSendBytes(IDevice device)
{
//TODO: address string
//
if (this.SendPart.IsNeedAddress)
{
if (this.SendPart.DataFieldManager[ADDRESS] != null)
{
this.SendPart[ADDRESS] = device.Address;
}
}
DataFieldValueProvider valueProvider = new DataFieldValueProvider(device);
byte[] bytes = this.SendPart.ToBytes(valueProvider);
return bytes;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public byte[] ToBytes(DataFieldValueProvider valueProvider)
{
if (valueProvider == null)
{
throw new ArgumentNullException("valueProvider");
}
return this.DataFieldManager.ToBytes(valueProvider);
}
