69 bool CheckRegion(StringPiece region) {  in CheckRegion()  argument
70   if (region.size() == 2) {  in CheckRegion()
71     return std::isupper(region[0]) && std::isupper(region[1]);  in CheckRegion()
72   } else if (region.size() == 3) {  in CheckRegion()
73     return std::isdigit(region[0]) && std::isdigit(region[1]) &&  in CheckRegion()
74            std::isdigit(region[2]);  in CheckRegion()
105   StringPiece region;  in FromBCP47()  local
107     region = *parts_it;  in FromBCP47()
108     if (!CheckRegion(region)) {  in FromBCP47()
109       region = "";  in FromBCP47()
117   return Locale(language.ToString(), script.ToString(), region.ToString());  in FromBCP47()
138   StringPiece region;  in FromLanguageTag()  local
139   if (language_tag->region() != nullptr) {  in FromLanguageTag()
140     region = language_tag->region()->c_str();  in FromLanguageTag()
141     if (!CheckRegion(region)) {  in FromLanguageTag()
142       region = "";  in FromLanguageTag()
145   return Locale(language.ToString(), script.ToString(), region.ToString());  in FromLanguageTag()