/// <summary>
/// 标签开始
/// </summary>
/// <param name="start"></param>
/// <param name="length"></param>
private void nameStart(char *start, int length)
{
char *data = CharStream.GetPrepCharSizeCurrent(length + (2 + 2));
*data = '<';
AutoCSer.Extensions.StringExtension.SimpleCopyNotNull64(start, ++data, length);
*(data + length) = '>';
CharStream.Data.CurrentIndex += (length + 2) * sizeof(char);
}