Npgsql.FrontendMessages.QueryMessage.Write C# (CSharp) Method

        internal override bool Write(WriteBuffer buf)
        {
            if (_charPos == -1)
            {
                // Start new query
                if (buf.WriteSpaceLeft < 1 + 4)
                    return false;
                _charPos = 0;
                var queryByteLen = _encoding.GetByteCount(_query);
                _queryChars = _query.ToCharArray();
                buf.WriteByte(Code);
                buf.WriteInt32(4 +            // Message length (including self excluding code)
                               queryByteLen + // Query byte length
                               1);            // Null terminator
            }

            if (_charPos < _queryChars.Length)
            {
                int charsUsed;
                bool completed;
                buf.WriteStringChunked(_queryChars, _charPos, _queryChars.Length - _charPos, true,
                                       out charsUsed, out completed);
                _charPos += charsUsed;
                if (!completed)
                    return false;
            }

            if (buf.WriteSpaceLeft < 1)
                return false;
            buf.WriteByte(0);

            _charPos = -1;
            return true;
        }

        internal static PregeneratedMessage Generate(WriteBuffer buf, QueryMessage queryMessage, string query, int responseMessageCount = 2)
        {
            Debug.Assert(query != null && query.All(c => c < 128));
            queryMessage.Populate(query);
            var description = queryMessage.ToString();

            queryMessage.Write(buf, false, CancellationToken.None).Wait();
            var bytes = buf.GetContents();

            buf.Clear();
            return(new PregeneratedMessage(bytes, description, responseMessageCount));
        }