InternalIsValid()

static unsafe bool System.IPv6AddressHelper.InternalIsValid ( char * name, int start, ref int end, bool validateStrictAddress )

inlinestaticprivate

Definition at line 81 of file IPv6AddressHelper.cs.

    {
        int num = 0;
        int num2 = 0;
        bool flag = false;
        bool flag2 = false;
        bool flag3 = false;
        bool flag4 = true;
        int start2 = 1;
        if (name[start] == ':' && (start + 1 >= end || name[start + 1] != ':'))
        {
            return false;
        }
        int i;
        for (i = start; i < end; i++)
        {
            bool num3;
            if (!flag3)
            {
                num3 = Uri.IsHexDigit(name[i]);
            }
            else
            {
                if (name[i] < '0')
                {
                    goto IL_0079;
                }
                num3 = name[i] <= '9';
            }
            if (num3)
            {
                num2++;
                flag4 = false;
                continue;
            }
            goto IL_0079;
            IL_0079:
            if (num2 > 4)
            {
                return false;
            }
            if (num2 != 0)
            {
                num++;
                start2 = i - num2;
            }
            char c = name[i];
            if ((uint)c <= 46u)
            {
                if (c == '%')
                {
                    while (true)
                    {
                        if (++i == end)
                        {
                            return false;
                        }
                        if (name[i] == ']')
                        {
                            break;
                        }
                        if (name[i] != '/')
                        {
                            continue;
                        }
                        goto IL_011c;
                    }
                    goto IL_00ee;
                }
                if (c != '.')
                {
                    goto IL_015c;
                }
                if (flag2)
                {
                    return false;
                }
                i = end;
                if (!IPv4AddressHelper.IsValid(name, start2, ref i, allowIPv6: true, notImplicitFile: false, unknownScheme: false))
                {
                    return false;
                }
                num++;
                flag2 = true;
                i--;
            }
            else
            {
                if (c == '/')
                {
                    goto IL_011c;
                }
                if (c != ':')
                {
                    if (c == ']')
                    {
                        goto IL_00ee;
                    }
                    goto IL_015c;
                }
                if (i > 0 && name[i - 1] == ':')
                {
                    if (flag)
                    {
                        return false;
                    }
                    flag = true;
                    flag4 = false;
                }
                else
                {
                    flag4 = true;
                }
            }
            goto IL_015e;
            IL_015c:
            return false;
            IL_011c:
            if (validateStrictAddress)
            {
                return false;
            }
            if (num == 0 || flag3)
            {
                return false;
            }
            flag3 = true;
            flag4 = true;
            goto IL_015e;
            IL_015e:
            num2 = 0;
            continue;
            IL_00ee:
            start = i;
            i = end;
        }
        if (flag3 && (num2 < 1 || num2 > 2))
        {
            return false;
        }
        int num4 = 8 + (flag3 ? 1 : 0);
        if (!flag4 && num2 <= 4 && (flag ? (num < num4) : (num == num4)))
        {
            if (i == end + 1)
            {
                end = start + 1;
                return true;
            }
            return false;
        }
        return false;
    }

References System.Uri.IsHexDigit(), System.IPv4AddressHelper.IsValid(), and System.start.

Referenced by System.IPv6AddressHelper.IsValid().