PhoneNumbers.PhoneRegex.MatchAll C# (CSharp) Method

        public Match MatchAll(String value)
        {
            return allRegex_.Match(value);
        }

        private bool MatchesEmergencyNumberHelper(String number, String regionCode,
                                                  bool allowPrefixMatch)
        {
            number = PhoneNumberUtil.ExtractPossibleNumber(number);
            if (PhoneNumberUtil.PlusCharsPattern.MatchBeginning(number).Success)
            {
                // Returns false if the number starts with a plus sign. We don't believe dialing the country
                // code before emergency numbers (e.g. +1911) works, but later, if that proves to work, we can
                // add additional logic here to handle it.
                return(false);
            }
            var metadata = phoneUtil.GetMetadataForRegion(regionCode);

            if (metadata == null || !metadata.HasEmergency)
            {
                return(false);
            }
            var emergencyNumberPattern =
                new PhoneRegex(metadata.Emergency.NationalNumberPattern);
            var normalizedNumber = PhoneNumberUtil.NormalizeDigitsOnly(number);

            // In Brazil, it is impossible to append additional digits to an emergency number to dial the
            // number.
            return((!allowPrefixMatch || regionCode.Equals("BR"))
                ? emergencyNumberPattern.MatchAll(normalizedNumber).Success
                : emergencyNumberPattern.MatchBeginning(normalizedNumber).Success);
        }