InternalFallback() [1/2]

virtual unsafe int System.Text.DecoderFallbackBuffer.InternalFallback ( byte[] bytes, byte * pBytes )

inlinepackagevirtualinherited

Reimplemented in System.Text.DecoderReplacementFallbackBuffer, and System.Text.UTF7Encoding.DecoderUTF7FallbackBuffer.

Definition at line 96 of file DecoderFallbackBuffer.cs.

    {
        if (Fallback(bytes, (int)(pBytes - byteStart - bytes.Length)))
        {
            int num = 0;
            bool flag = false;
            char nextChar;
            while ((nextChar = GetNextChar()) != 0)
            {
                if (char.IsSurrogate(nextChar))
                {
                    if (char.IsHighSurrogate(nextChar))
                    {
                        if (flag)
                        {
                            throw new ArgumentException(SR.Argument_InvalidCharSequenceNoIndex);
                        }
                        flag = true;
                    }
                    else
                    {
                        if (!flag)
                        {
                            throw new ArgumentException(SR.Argument_InvalidCharSequenceNoIndex);
                        }
                        flag = false;
                    }
                }
                num++;
            }
            if (flag)
            {
                throw new ArgumentException(SR.Argument_InvalidCharSequenceNoIndex);
            }
            return num;
        }
        return 0;
    }

References System.SR.Argument_InvalidCharSequenceNoIndex, System.bytes, System.Text.DecoderFallbackBuffer.byteStart, System.Text.DecoderFallbackBuffer.Fallback(), and System.Text.DecoderFallbackBuffer.GetNextChar().