511   StringRef MajorStr, MinorStr;  in getExtensionVersion()  local
515   MajorStr = In.take_while(isDigit);  in getExtensionVersion()
516   In = In.substr(MajorStr.size());  in getExtensionVersion()
518   if (!MajorStr.empty() && In.consume_front("p")) {  in getExtensionVersion()
520     In = In.substr(MajorStr.size() + MinorStr.size() - 1);  in getExtensionVersion()
530   if (!MajorStr.empty() && MajorStr.getAsInteger(10, Major))  in getExtensionVersion()
540   ConsumeLength = MajorStr.size();  in getExtensionVersion()
564         (MajorStr.empty() && MinorStr.empty())) {  in getExtensionVersion()
574       std::string Error = "unsupported version number " + MajorStr.str();  in getExtensionVersion()
590   if (MajorStr.empty() && MinorStr.empty()) {  in getExtensionVersion()
603   std::string Error = "unsupported version number " + std::string(MajorStr);  in getExtensionVersion()