System.Text.EncoderFallbackBuffer.GetNextChar C# (CSharp) Method

        public abstract char GetNextChar();

		public unsafe void HandleFallback (ref EncoderFallbackBuffer buffer,
			char* chars, ref int charIndex, ref int charCount,
			byte* bytes, ref int byteIndex, ref int byteCount, object state)
		{
			if (buffer == null)
				buffer = EncoderFallback.CreateFallbackBuffer ();

			if (charCount > 1 && (Char.IsSurrogate (chars [charIndex]) && Char.IsSurrogate (chars [charIndex + 1]))) {
				buffer.Fallback (chars [charIndex], chars [charIndex + 1], charIndex);
				charIndex++;
				charCount--;
			}
			else
				buffer.Fallback (chars [charIndex], charIndex);
			char [] tmp = new char [buffer.Remaining];
			int idx = 0;
			while (buffer.Remaining > 0)
				tmp [idx++] = buffer.GetNextChar ();

			fixed (char* tmparr = tmp) {
				var outbytes = bytes == null ? null : bytes + byteIndex;
				var len = state == null ?
					GetBytes(tmparr, tmp.Length, outbytes, byteCount)
					: GetBytesInternal(tmparr, tmp.Length, outbytes, byteCount, true, state);

				byteIndex += len;
				byteCount -= len;
			}
		}