/// <summary>
        /// Parses <b>address-list</b> from specified string value.
        /// </summary>
        /// <param name="value">The <b>address-list</b> string value.</param>
        /// <returns></returns>
        /// <exception cref="ArgumentNullException">Is raised when <b>value</b> is null reference.</exception>
        /// <exception cref="ParseException">Is raised when <b>value</b> is not valid <b>address-list</b> value.</exception>
        public static Mail_t_AddressList Parse(string value)
        {
            if (value == null)
            {
                throw new ArgumentNullException("value");
            }

            /* RFC 5322 3.4.
             *  address         =   mailbox / group
             *  mailbox         =   name-addr / addr-spec
             *  name-addr       =   [display-name] angle-addr
             *  angle-addr      =   [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr
             *  group           =   display-name ":" [group-list] ";" [CFWS]
             *  display-name    =   phrase
             *  mailbox-list    =   (mailbox *("," mailbox)) / obs-mbox-list
             *  address-list    =   (address *("," address)) / obs-addr-list
             *  group-list      =   mailbox-list / CFWS / obs-group-list
             */

            MIME_Reader        r      = new MIME_Reader(value);
            Mail_t_AddressList retVal = new Mail_t_AddressList();

            while (true)
            {
                string word = r.QuotedReadToDelimiter(new char[] { ',', '<', ':' });
                // We processed all data.
                if (word == null && r.Available == 0)
                {
                    break;
                }
                // group
                else if (r.Peek(true) == ':')
                {
                    Mail_t_Group group = new Mail_t_Group(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word)) : null);
                    // Consume ':'
                    r.Char(true);

                    while (true)
                    {
                        word = r.QuotedReadToDelimiter(new char[] { ',', '<', ':', ';' });
                        // We processed all data.
                        if ((word == null && r.Available == 0) || r.Peek(false) == ';')
                        {
                            break;
                        }
                        // In valid address list value.
                        else if (word == string.Empty)
                        {
                            throw new ParseException("Invalid address-list value '" + value + "'.");
                        }
                        // name-addr
                        else if (r.Peek(true) == '<')
                        {
                            group.Members.Add(new Mail_t_Mailbox(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word)) : null, r.ReadParenthesized()));
                        }
                        // addr-spec
                        else
                        {
                            group.Members.Add(new Mail_t_Mailbox(null, word));
                        }

                        // We reached at the end of group.
                        if (r.Peek(true) == ';')
                        {
                            r.Char(true);
                            break;
                        }
                        // We have more addresses.
                        if (r.Peek(true) == ',')
                        {
                            r.Char(false);
                        }
                    }

                    retVal.Add(group);
                }
                // name-addr
                else if (r.Peek(true) == '<')
                {
                    retVal.Add(new Mail_t_Mailbox(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word.Trim())) : null, r.ReadParenthesized()));
                }
                // addr-spec
                else
                {
                    retVal.Add(new Mail_t_Mailbox(null, word));
                }

                // We have more addresses.
                if (r.Peek(true) == ',')
                {
                    r.Char(false);
                }
            }

            return(retVal);
        }
        /// <summary>
        /// Parses header field from the specified value.
        /// </summary>
        /// <param name="value">Header field value. Header field name must be included. For example: 'Content-Type: text/plain'.</param>
        /// <returns>Returns parsed header field.</returns>
        /// <exception cref="ArgumentNullException">Is raised when <b>value</b> is null reference.</exception>
        /// <exception cref="ParseException">Is raised when header field parsing errors.</exception>
        public static Mail_h_AddressList Parse(string value)
        {
            if(value == null){
                throw new ArgumentNullException("value");
            }

            string[] name_value = value.Split(new char[]{':'},2);
            if(name_value.Length != 2){
                throw new ParseException("Invalid header field value '" + value + "'.");
            }

            MIME_Reader r = new MIME_Reader(name_value[1]);

            /* RFC 5322 3.4.
                address         =   mailbox / group

                mailbox         =   name-addr / addr-spec

                name-addr       =   [display-name] angle-addr

                angle-addr      =   [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr

                group           =   display-name ":" [group-list] ";" [CFWS]

                display-name    =   phrase

                mailbox-list    =   (mailbox *("," mailbox)) / obs-mbox-list

                address-list    =   (address *("," address)) / obs-addr-list

                group-list      =   mailbox-list / CFWS / obs-group-list
            */

            Mail_h_AddressList retVal = new Mail_h_AddressList(name_value[0],new Mail_t_AddressList());

            while(true){
                string word = r.QuotedReadToDelimiter(new char[]{',','<',':'});
                // We processed all data.
                if(word == null && r.Available == 0){
                    break;
                }
                // group
                else if(r.Peek(true) == ':'){
                    Mail_t_Group group = new Mail_t_Group(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word)) : null);
                    // Consume ':'
                    r.Char(true);

                    while(true){
                        word = r.QuotedReadToDelimiter(new char[]{',','<',':',';'});
                        // We processed all data.
                        if(word == null && r.Available == 0){
                            break;
                        }
                        // name-addr
                        else if(r.Peek(true) == '<'){
                            group.Members.Add(new Mail_t_Mailbox(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word)) : null,r.ReadParenthesized()));
                        }
                        // addr-spec
                        else{
                            group.Members.Add(new Mail_t_Mailbox(null,word));
                        }

                        // We reached at the end of group.
                        if(r.Peek(true) == ';'){
                            r.Char(true);
                            break;
                        }
                        // We have more addresses.
                        if(r.Peek(true) == ','){
                            r.Char(false);
                        }
                    }

                    retVal.m_pAddresses.Add(group);
                }
                // name-addr
                else if(r.Peek(true) == '<'){
                    retVal.m_pAddresses.Add(new Mail_t_Mailbox(word != null ? MIME_Encoding_EncodedWord.DecodeS(TextUtils.UnQuoteString(word)) : null,r.ReadParenthesized()));
                }
                // addr-spec
                else{
                    retVal.m_pAddresses.Add(new Mail_t_Mailbox(null,word));
                }

                // We have more addresses.
                if(r.Peek(true) == ','){
                    r.Char(false);
                }
            }

            retVal.m_ParseValue = value;
            retVal.m_pAddresses.AcceptChanges();

            return retVal;
        }