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-rw-r--r--js/src/builtin/Intl.js126
1 files changed, 125 insertions, 1 deletions
diff --git a/js/src/builtin/Intl.js b/js/src/builtin/Intl.js
index 509168d7a..6391c3e70 100644
--- a/js/src/builtin/Intl.js
+++ b/js/src/builtin/Intl.js
@@ -9,7 +9,8 @@
JSMSG_INVALID_OPTION_VALUE: false, JSMSG_INVALID_DIGITS_VALUE: false,
JSMSG_INTL_OBJECT_REINITED: false, JSMSG_INVALID_CURRENCY_CODE: false,
JSMSG_UNDEFINED_CURRENCY: false, JSMSG_INVALID_TIME_ZONE: false,
- JSMSG_DATE_NOT_FINITE: false,
+ JSMSG_DATE_NOT_FINITE: false, JSMSG_INVALID_KEYS_TYPE: false,
+ JSMSG_INVALID_KEY: false,
intl_Collator_availableLocales: false,
intl_availableCollations: false,
intl_CompareStrings: false,
@@ -3024,3 +3025,126 @@ function Intl_getCalendarInfo(locales) {
return result;
}
+
+/**
+ * This function is a custom method designed after Intl API, but currently
+ * not part of the spec or spec proposal.
+ * We want to use it internally to retrieve translated values from CLDR in
+ * order to ensure they're aligned with what Intl API returns.
+ *
+ * This API may one day be a foundation for an ECMA402 API spec proposal.
+ *
+ * The function takes two arguments - locales which is a list of locale strings
+ * and options which is an object with two optional properties:
+ *
+ * keys:
+ * an Array of string values that are paths to individual terms
+ *
+ * style:
+ * a String with a value "long", "short" or "narrow"
+ *
+ * It returns an object with properties:
+ *
+ * locale:
+ * a negotiated locale string
+ *
+ * style:
+ * negotiated style
+ *
+ * values:
+ * A key-value pair list of requested keys and corresponding
+ * translated values
+ *
+ */
+function Intl_getDisplayNames(locales, options) {
+ // 1. Let requestLocales be ? CanonicalizeLocaleList(locales).
+ const requestedLocales = CanonicalizeLocaleList(locales);
+
+ // 2. If options is undefined, then
+ if (options === undefined)
+ // a. Let options be ObjectCreate(%ObjectPrototype%).
+ options = {};
+ // 3. Else,
+ else
+ // a. Let options be ? ToObject(options).
+ options = ToObject(options);
+
+ const DateTimeFormat = dateTimeFormatInternalProperties;
+
+ // 4. Let localeData be %DateTimeFormat%.[[localeData]].
+ const localeData = DateTimeFormat.localeData;
+
+ // 5. Let opt be a new Record.
+ const localeOpt = new Record();
+ // 6. Set localeOpt.[[localeMatcher]] to "best fit".
+ localeOpt.localeMatcher = "best fit";
+
+ // 7. Let r be ResolveLocale(%DateTimeFormat%.[[availableLocales]], requestedLocales, localeOpt,
+ // %DateTimeFormat%.[[relevantExtensionKeys]], localeData).
+ const r = ResolveLocale(callFunction(DateTimeFormat.availableLocales, DateTimeFormat),
+ requestedLocales,
+ localeOpt,
+ DateTimeFormat.relevantExtensionKeys,
+ localeData);
+
+ // 8. Let style be ? GetOption(options, "style", "string", « "long", "short", "narrow" », "long").
+ const style = GetOption(options, "style", "string", ["long", "short", "narrow"], "long");
+ // 9. Let keys be ? Get(options, "keys").
+ let keys = options.keys;
+
+ // 10. If keys is undefined,
+ if (keys === undefined) {
+ // a. Let keys be ArrayCreate(0).
+ keys = [];
+ } else if (!IsObject(keys)) {
+ // 11. Else,
+ // a. If Type(keys) is not Object, throw a TypeError exception.
+ ThrowTypeError(JSMSG_INVALID_KEYS_TYPE);
+ }
+
+ // 12. Let processedKeys be ArrayCreate(0).
+ // (This really should be a List, but we use an Array here in order that
+ // |intl_ComputeDisplayNames| may infallibly access the list's length via
+ // |ArrayObject::length|.)
+ let processedKeys = [];
+ // 13. Let len be ? ToLength(? Get(keys, "length")).
+ let len = ToLength(keys.length);
+ // 14. Let i be 0.
+ // 15. Repeat, while i < len
+ for (let i = 0; i < len; i++) {
+ // a. Let processedKey be ? ToString(? Get(keys, i)).
+ // b. Perform ? CreateDataPropertyOrThrow(processedKeys, i, processedKey).
+ callFunction(std_Array_push, processedKeys, ToString(keys[i]));
+ }
+
+ // 16. Let names be ? ComputeDisplayNames(r.[[locale]], style, processedKeys).
+ const names = intl_ComputeDisplayNames(r.locale, style, processedKeys);
+
+ // 17. Let values be ObjectCreate(%ObjectPrototype%).
+ const values = {};
+
+ // 18. Set i to 0.
+ // 19. Repeat, while i < len
+ for (let i = 0; i < len; i++) {
+ // a. Let key be ? Get(processedKeys, i).
+ const key = processedKeys[i];
+ // b. Let name be ? Get(names, i).
+ const name = names[i];
+ // c. Assert: Type(name) is string.
+ assert(typeof name === "string", "unexpected non-string value");
+ // d. Assert: the length of name is greater than zero.
+ assert(name.length > 0, "empty string value");
+ // e. Perform ? DefinePropertyOrThrow(values, key, name).
+ _DefineDataProperty(values, key, name);
+ }
+
+ // 20. Let options be ObjectCreate(%ObjectPrototype%).
+ // 21. Perform ! DefinePropertyOrThrow(result, "locale", r.[[locale]]).
+ // 22. Perform ! DefinePropertyOrThrow(result, "style", style).
+ // 23. Perform ! DefinePropertyOrThrow(result, "values", values).
+ const result = { locale: r.locale, style, values };
+
+ // 24. Return result.
+ return result;
+
+}