System.Xml.Schema.XsdDateTime.Parser.ParseZoneAndWhitespace C# (CSharp) Méthode

            private bool ParseZoneAndWhitespace(int start) {
                if (start < length) {
                    char ch = text[start]; 
                    if (ch == 'Z' || ch == 'z') {
                        kind = XsdDateTimeKind.Zulu;
                        start ++;
                    }
                    else if (start + 5 < length) {
                        if (
                            Parse2Dig(start + Lz_,       ref zoneHour) && zoneHour <= 99 &&
                            ParseChar(start + Lz_zz,     ':') &&
                            Parse2Dig(start + Lz_zz_,    ref zoneMinute) && zoneMinute <= 99
                        ) {
                            if (ch == '-') {
                                kind = XsdDateTimeKind.LocalWestOfZulu;
                                start += Lz_zz_zz;
                            }
                            else if (ch == '+') {
                                kind = XsdDateTimeKind.LocalEastOfZulu;
                                start += Lz_zz_zz;
                            }
                        }
                    }
                }
                while(start < length && char.IsWhiteSpace(text[start])) {
                    start ++;
                }
                return start == length;
            }