184     parsedResult.extension = result.substr(foundExtension, extensionEnd - foundExtension);  in HandleLocale()
348         //       with all Unicode locale extension sequences removed.  in LookupMatcher()
358 …// 2. c. ii. 1. Let extension be the String value consisting of  the first substring of locale tha…  in LookupMatcher()
359             //              Unicode locale extension sequence.  in LookupMatcher()
360             if (!parsedResult.extension.empty()) {  in LookupMatcher()
361                 result.extension = parsedResult.extension;  in LookupMatcher()
363             // 2. c. ii. 2. Set result.[[extension]] to extension.  in LookupMatcher()
364             std::string res = result.locale + result.extension;  in LookupMatcher()
440 …t noExtensionsLocale be the String value that is locale with all Unicode locale extension sequences  in LookupSupportedLocales()
692 // 9.2.5 UnicodeExtensionValue ( extension, key )
693 std::string JSLocale::UnicodeExtensionValue(const std::string extension, const std::string key)  in UnicodeExtensionValue()  argument
696     // 2. Let size be the number of elements in extension.  in UnicodeExtensionValue()
698     size_t size = extension.size();  in UnicodeExtensionValue()
701     // 4. Let pos be Call(%StringProto_indexOf%, extension, « searchValue »).  in UnicodeExtensionValue()
702     size_t pos = extension.find(searchValue);  in UnicodeExtensionValue()
715             // i. Let e be Call(%StringProto_indexOf%, extension, « "-", k »).  in UnicodeExtensionValue()
716             size_t e = extension.find("-", k);  in UnicodeExtensionValue()
742 …// f. Return the String value equal to the substring of extension consisting of the code units at …  in UnicodeExtensionValue()
744         std::string result = extension.substr(start, end - start);  in UnicodeExtensionValue()
749     // 7. Let pos be Call(%StringProto_indexOf%, extension, « searchValue »).  in UnicodeExtensionValue()
750     pos = extension.find(searchValue);  in UnicodeExtensionValue()
822         // h. If r has an [[extension]] field, then  in ResolveLocale()
826             std::string extension = foundLocale.substr(found + INTL_INDEX_ONE);  in ResolveLocale()  local
828             // i. Let requestedValue be UnicodeExtensionValue(r.[[extension]], key).  in ResolveLocale()
829             std::string requestedValue = UnicodeExtensionValue(extension, key);  in ResolveLocale()