private void ReadDeclaration()
{
int num;
if (!this.buffered)
{
this.BufferElement();
}
byte[] bytes = base.BufferReader.GetBuffer(5, out num);
if (((bytes[num] != 0x3f) || (bytes[num + 1] != 120)) || (((bytes[num + 2] != 0x6d) || (bytes[num + 3] != 0x6c)) || ((charType[bytes[num + 4]] & 4) == 0)))
{
XmlExceptionHelper.ThrowProcessingInstructionNotSupported(this);
}
if (base.Node.ReadState != System.Xml.ReadState.Initial)
{
XmlExceptionHelper.ThrowDeclarationNotFirst(this);
}
base.BufferReader.Advance(5);
int offset = num + 1;
int length = 3;
int num4 = base.BufferReader.Offset;
this.SkipWhitespace();
this.ReadAttributes();
int num5 = base.BufferReader.Offset - num4;
while (num5 > 0)
{
byte @byte = base.BufferReader.GetByte((num4 + num5) - 1);
if ((charType[@byte] & 4) == 0)
{
break;
}
num5--;
}
bytes = base.BufferReader.GetBuffer(2, out num);
if ((bytes[num] != 0x3f) || (bytes[num + 1] != 0x3e))
{
XmlExceptionHelper.ThrowTokenExpected(this, "?>", Encoding.UTF8.GetString(bytes, num, 2));
}
base.BufferReader.Advance(2);
XmlBaseReader.XmlDeclarationNode node = base.MoveToDeclaration();
node.LocalName.SetValue(offset, length);
node.Value.SetValue(ValueHandleType.UTF8, num4, num5);
}