func getRegionCodeForShortNumberFromRegionList()

in shortnumber_info.go [147:163]

• 16 lines of code
• 6 McCabe index (conditional complexity)

func getRegionCodeForShortNumberFromRegionList(number *PhoneNumber, regionCodes []string) string {
	if len(regionCodes) == 0 {
		return ""
	}
	if len(regionCodes) == 1 {
		return regionCodes[0]
	}
	nationalNumber := GetNationalSignificantNumber(number)
	for _, regionCode := range regionCodes {
		phoneMetadata := getShortNumberMetadataForRegion(regionCode)
		if phoneMetadata != nil && matchesPossibleNumberAndNationalNumber(nationalNumber, phoneMetadata.GetShortCode()) {
			// The number is valid for this region.
			return regionCode
		}
	}
	return ""
}