Javascript
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2275行
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70.65 KB
// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// ECMAScript 402 API implementation.
/**
* Intl object is a single object that has some named properties,
* all of which are constructors.
*/
(function(global, utils) {
"use strict";
%CheckIsBootstrapping();
// -------------------------------------------------------------------
// Imports
var ArrayJoin;
var ArrayPush;
var GlobalDate = global.Date;
var GlobalNumber = global.Number;
var GlobalRegExp = global.RegExp;
var GlobalString = global.String;
var InstallFunctions = utils.InstallFunctions;
var InstallGetter = utils.InstallGetter;
var InternalArray = utils.InternalArray;
var ObjectHasOwnProperty = utils.ImportNow("ObjectHasOwnProperty");
var OverrideFunction = utils.OverrideFunction;
var patternSymbol = utils.ImportNow("intl_pattern_symbol");
var resolvedSymbol = utils.ImportNow("intl_resolved_symbol");
var SetFunctionName = utils.SetFunctionName;
var StringSubstr = GlobalString.prototype.substr;
var StringSubstring = GlobalString.prototype.substring;
utils.Import(function(from) {
ArrayJoin = from.ArrayJoin;
ArrayPush = from.ArrayPush;
});
// Utilities for definitions
function InstallFunction(object, name, func) {
InstallFunctions(object, DONT_ENUM, [name, func]);
}
function InstallConstructor(object, name, func) {
%CheckIsBootstrapping();
SetFunctionName(func, name);
%AddNamedProperty(object, name, func, DONT_ENUM);
%SetNativeFlag(func);
%ToFastProperties(object);
}
/**
* Adds bound method to the prototype of the given object.
*/
function AddBoundMethod(obj, methodName, implementation, length, type) {
%CheckIsBootstrapping();
var internalName = %CreatePrivateSymbol(methodName);
// Making getter an anonymous function will cause
// %DefineGetterPropertyUnchecked to properly set the "name"
// property on each JSFunction instance created here, rather
// than (as utils.InstallGetter would) on the SharedFunctionInfo
// associated with all functions returned from AddBoundMethod.
var getter = ANONYMOUS_FUNCTION(function() {
if (!%IsInitializedIntlObjectOfType(this, type)) {
throw %make_type_error(kMethodCalledOnWrongObject, methodName);
}
if (IS_UNDEFINED(this[internalName])) {
var boundMethod;
if (IS_UNDEFINED(length) || length === 2) {
boundMethod =
ANONYMOUS_FUNCTION((fst, snd) => implementation(this, fst, snd));
} else if (length === 1) {
boundMethod = ANONYMOUS_FUNCTION(fst => implementation(this, fst));
} else {
boundMethod = ANONYMOUS_FUNCTION((...args) => {
// DateTimeFormat.format needs to be 0 arg method, but can still
// receive an optional dateValue param. If one was provided, pass it
// along.
if (args.length > 0) {
return implementation(this, args[0]);
} else {
return implementation(this);
}
});
}
%SetNativeFlag(boundMethod);
this[internalName] = boundMethod;
}
return this[internalName];
});
%FunctionRemovePrototype(getter);
%DefineGetterPropertyUnchecked(obj.prototype, methodName, getter, DONT_ENUM);
%SetNativeFlag(getter);
}
// -------------------------------------------------------------------
var Intl = {};
%AddNamedProperty(global, "Intl", Intl, DONT_ENUM);
/**
* Caches available locales for each service.
*/
var AVAILABLE_LOCALES = {
'collator': UNDEFINED,
'numberformat': UNDEFINED,
'dateformat': UNDEFINED,
'breakiterator': UNDEFINED
};
/**
* Caches default ICU locale.
*/
var DEFAULT_ICU_LOCALE = UNDEFINED;
function GetDefaultICULocaleJS() {
if (IS_UNDEFINED(DEFAULT_ICU_LOCALE)) {
DEFAULT_ICU_LOCALE = %GetDefaultICULocale();
}
return DEFAULT_ICU_LOCALE;
}
/**
* Unicode extension regular expression.
*/
var UNICODE_EXTENSION_RE = UNDEFINED;
function GetUnicodeExtensionRE() {
if (IS_UNDEFINED(UNDEFINED)) {
UNICODE_EXTENSION_RE = new GlobalRegExp('-u(-[a-z0-9]{2,8})+', 'g');
}
return UNICODE_EXTENSION_RE;
}
/**
* Matches any Unicode extension.
*/
var ANY_EXTENSION_RE = UNDEFINED;
function GetAnyExtensionRE() {
if (IS_UNDEFINED(ANY_EXTENSION_RE)) {
ANY_EXTENSION_RE = new GlobalRegExp('-[a-z0-9]{1}-.*', 'g');
}
return ANY_EXTENSION_RE;
}
/**
* Replace quoted text (single quote, anything but the quote and quote again).
*/
var QUOTED_STRING_RE = UNDEFINED;
function GetQuotedStringRE() {
if (IS_UNDEFINED(QUOTED_STRING_RE)) {
QUOTED_STRING_RE = new GlobalRegExp("'[^']+'", 'g');
}
return QUOTED_STRING_RE;
}
/**
* Matches valid service name.
*/
var SERVICE_RE = UNDEFINED;
function GetServiceRE() {
if (IS_UNDEFINED(SERVICE_RE)) {
SERVICE_RE =
new GlobalRegExp('^(collator|numberformat|dateformat|breakiterator)$');
}
return SERVICE_RE;
}
/**
* Validates a language tag against bcp47 spec.
* Actual value is assigned on first run.
*/
var LANGUAGE_TAG_RE = UNDEFINED;
function GetLanguageTagRE() {
if (IS_UNDEFINED(LANGUAGE_TAG_RE)) {
BuildLanguageTagREs();
}
return LANGUAGE_TAG_RE;
}
/**
* Helps find duplicate variants in the language tag.
*/
var LANGUAGE_VARIANT_RE = UNDEFINED;
function GetLanguageVariantRE() {
if (IS_UNDEFINED(LANGUAGE_VARIANT_RE)) {
BuildLanguageTagREs();
}
return LANGUAGE_VARIANT_RE;
}
/**
* Helps find duplicate singletons in the language tag.
*/
var LANGUAGE_SINGLETON_RE = UNDEFINED;
function GetLanguageSingletonRE() {
if (IS_UNDEFINED(LANGUAGE_SINGLETON_RE)) {
BuildLanguageTagREs();
}
return LANGUAGE_SINGLETON_RE;
}
/**
* Matches valid IANA time zone names.
*/
var TIMEZONE_NAME_CHECK_RE = UNDEFINED;
function GetTimezoneNameCheckRE() {
if (IS_UNDEFINED(TIMEZONE_NAME_CHECK_RE)) {
TIMEZONE_NAME_CHECK_RE = new GlobalRegExp(
'^([A-Za-z]+)/([A-Za-z_-]+)((?:\/[A-Za-z_-]+)+)*$');
}
return TIMEZONE_NAME_CHECK_RE;
}
/**
* Matches valid location parts of IANA time zone names.
*/
var TIMEZONE_NAME_LOCATION_PART_RE = UNDEFINED;
function GetTimezoneNameLocationPartRE() {
if (IS_UNDEFINED(TIMEZONE_NAME_LOCATION_PART_RE)) {
TIMEZONE_NAME_LOCATION_PART_RE =
new GlobalRegExp('^([A-Za-z]+)((?:[_-][A-Za-z]+)+)*$');
}
return TIMEZONE_NAME_LOCATION_PART_RE;
}
/**
* Returns an intersection of locales and service supported locales.
* Parameter locales is treated as a priority list.
*/
function supportedLocalesOf(service, locales, options) {
if (IS_NULL(%regexp_internal_match(GetServiceRE(), service))) {
throw %make_error(kWrongServiceType, service);
}
// Provide defaults if matcher was not specified.
if (IS_UNDEFINED(options)) {
options = {};
} else {
options = TO_OBJECT(options);
}
var matcher = options.localeMatcher;
if (!IS_UNDEFINED(matcher)) {
matcher = TO_STRING(matcher);
if (matcher !== 'lookup' && matcher !== 'best fit') {
throw %make_range_error(kLocaleMatcher, matcher);
}
} else {
matcher = 'best fit';
}
var requestedLocales = initializeLocaleList(locales);
// Cache these, they don't ever change per service.
if (IS_UNDEFINED(AVAILABLE_LOCALES[service])) {
AVAILABLE_LOCALES[service] = getAvailableLocalesOf(service);
}
// Use either best fit or lookup algorithm to match locales.
if (matcher === 'best fit') {
return initializeLocaleList(bestFitSupportedLocalesOf(
requestedLocales, AVAILABLE_LOCALES[service]));
}
return initializeLocaleList(lookupSupportedLocalesOf(
requestedLocales, AVAILABLE_LOCALES[service]));
}
/**
* Returns the subset of the provided BCP 47 language priority list for which
* this service has a matching locale when using the BCP 47 Lookup algorithm.
* Locales appear in the same order in the returned list as in the input list.
*/
function lookupSupportedLocalesOf(requestedLocales, availableLocales) {
var matchedLocales = new InternalArray();
for (var i = 0; i < requestedLocales.length; ++i) {
// Remove -u- extension.
var locale = %RegExpInternalReplace(
GetUnicodeExtensionRE(), requestedLocales[i], '');
do {
if (!IS_UNDEFINED(availableLocales[locale])) {
// Push requested locale not the resolved one.
%_Call(ArrayPush, matchedLocales, requestedLocales[i]);
break;
}
// Truncate locale if possible, if not break.
var pos = %StringLastIndexOf(locale, '-');
if (pos === -1) {
break;
}
locale = %_Call(StringSubstring, locale, 0, pos);
} while (true);
}
return matchedLocales;
}
/**
* Returns the subset of the provided BCP 47 language priority list for which
* this service has a matching locale when using the implementation
* dependent algorithm.
* Locales appear in the same order in the returned list as in the input list.
*/
function bestFitSupportedLocalesOf(requestedLocales, availableLocales) {
// TODO(cira): implement better best fit algorithm.
return lookupSupportedLocalesOf(requestedLocales, availableLocales);
}
/**
* Returns a getOption function that extracts property value for given
* options object. If property is missing it returns defaultValue. If value
* is out of range for that property it throws RangeError.
*/
function getGetOption(options, caller) {
if (IS_UNDEFINED(options)) throw %make_error(kDefaultOptionsMissing, caller);
var getOption = function getOption(property, type, values, defaultValue) {
if (!IS_UNDEFINED(options[property])) {
var value = options[property];
switch (type) {
case 'boolean':
value = TO_BOOLEAN(value);
break;
case 'string':
value = TO_STRING(value);
break;
case 'number':
value = TO_NUMBER(value);
break;
default:
throw %make_error(kWrongValueType);
}
if (!IS_UNDEFINED(values) && %ArrayIndexOf(values, value, 0) === -1) {
throw %make_range_error(kValueOutOfRange, value, caller, property);
}
return value;
}
return defaultValue;
}
return getOption;
}
/**
* Ecma 402 9.2.5
* TODO(jshin): relevantExtensionKeys and localeData need to be taken into
* account per spec.
* Compares a BCP 47 language priority list requestedLocales against the locales
* in availableLocales and determines the best available language to meet the
* request. Two algorithms are available to match the locales: the Lookup
* algorithm described in RFC 4647 section 3.4, and an implementation dependent
* best-fit algorithm. Independent of the locale matching algorithm, options
* specified through Unicode locale extension sequences are negotiated
* separately, taking the caller's relevant extension keys and locale data as
* well as client-provided options into consideration. Returns an object with
* a locale property whose value is the language tag of the selected locale,
* and properties for each key in relevantExtensionKeys providing the selected
* value for that key.
*/
function resolveLocale(service, requestedLocales, options) {
requestedLocales = initializeLocaleList(requestedLocales);
var getOption = getGetOption(options, service);
var matcher = getOption('localeMatcher', 'string',
['lookup', 'best fit'], 'best fit');
var resolved;
if (matcher === 'lookup') {
resolved = lookupMatcher(service, requestedLocales);
} else {
resolved = bestFitMatcher(service, requestedLocales);
}
return resolved;
}
/**
* Returns best matched supported locale and extension info using basic
* lookup algorithm.
*/
function lookupMatcher(service, requestedLocales) {
if (IS_NULL(%regexp_internal_match(GetServiceRE(), service))) {
throw %make_error(kWrongServiceType, service);
}
// Cache these, they don't ever change per service.
if (IS_UNDEFINED(AVAILABLE_LOCALES[service])) {
AVAILABLE_LOCALES[service] = getAvailableLocalesOf(service);
}
for (var i = 0; i < requestedLocales.length; ++i) {
// Remove all extensions.
var locale = %RegExpInternalReplace(
GetAnyExtensionRE(), requestedLocales[i], '');
do {
if (!IS_UNDEFINED(AVAILABLE_LOCALES[service][locale])) {
// Return the resolved locale and extension.
var extensionMatch = %regexp_internal_match(
GetUnicodeExtensionRE(), requestedLocales[i]);
var extension = IS_NULL(extensionMatch) ? '' : extensionMatch[0];
return {'locale': locale, 'extension': extension, 'position': i};
}
// Truncate locale if possible.
var pos = %StringLastIndexOf(locale, '-');
if (pos === -1) {
break;
}
locale = %_Call(StringSubstring, locale, 0, pos);
} while (true);
}
// Didn't find a match, return default.
return {'locale': GetDefaultICULocaleJS(), 'extension': '', 'position': -1};
}
/**
* Returns best matched supported locale and extension info using
* implementation dependend algorithm.
*/
function bestFitMatcher(service, requestedLocales) {
// TODO(cira): implement better best fit algorithm.
return lookupMatcher(service, requestedLocales);
}
/**
* Parses Unicode extension into key - value map.
* Returns empty object if the extension string is invalid.
* We are not concerned with the validity of the values at this point.
* 'attribute' in RFC 6047 is not supported. Keys without explicit
* values are assigned UNDEFINED.
* TODO(jshin): Fix the handling of 'attribute' (in RFC 6047, but none
* has been defined so that it's not used) and boolean keys without
* an explicit value.
*/
function parseExtension(extension) {
var extensionSplit = %StringSplit(extension, '-', kMaxUint32);
// Assume ['', 'u', ...] input, but don't throw.
if (extensionSplit.length <= 2 ||
(extensionSplit[0] !== '' && extensionSplit[1] !== 'u')) {
return {};
}
// Key is {2}alphanum, value is {3,8}alphanum.
// Some keys may not have explicit values (booleans).
var extensionMap = {};
var key = UNDEFINED;
var value = UNDEFINED;
for (var i = 2; i < extensionSplit.length; ++i) {
var length = extensionSplit[i].length;
var element = extensionSplit[i];
if (length === 2) {
if (!IS_UNDEFINED(key)) {
if (!(key in extensionMap)) {
extensionMap[key] = value;
}
value = UNDEFINED;
}
key = element;
} else if (length >= 3 && length <= 8 && !IS_UNDEFINED(key)) {
if (IS_UNDEFINED(value)) {
value = element;
} else {
value = value + "-" + element;
}
} else {
// There is a value that's too long, or that doesn't have a key.
return {};
}
}
if (!IS_UNDEFINED(key) && !(key in extensionMap)) {
extensionMap[key] = value;
}
return extensionMap;
}
/**
* Populates internalOptions object with boolean key-value pairs
* from extensionMap and options.
* Returns filtered extension (number and date format constructors use
* Unicode extensions for passing parameters to ICU).
* It's used for extension-option pairs only, e.g. kn-normalization, but not
* for 'sensitivity' since it doesn't have extension equivalent.
* Extensions like nu and ca don't have options equivalent, so we place
* undefined in the map.property to denote that.
*/
function setOptions(inOptions, extensionMap, keyValues, getOption, outOptions) {
var extension = '';
var updateExtension = function updateExtension(key, value) {
return '-' + key + '-' + TO_STRING(value);
}
var updateProperty = function updateProperty(property, type, value) {
if (type === 'boolean' && (typeof value === 'string')) {
value = (value === 'true') ? true : false;
}
if (!IS_UNDEFINED(property)) {
defineWEProperty(outOptions, property, value);
}
}
for (var key in keyValues) {
if (HAS_OWN_PROPERTY(keyValues, key)) {
var value = UNDEFINED;
var map = keyValues[key];
if (!IS_UNDEFINED(map.property)) {
// This may return true if user specifies numeric: 'false', since
// Boolean('nonempty') === true.
value = getOption(map.property, map.type, map.values);
}
if (!IS_UNDEFINED(value)) {
updateProperty(map.property, map.type, value);
extension += updateExtension(key, value);
continue;
}
// User options didn't have it, check Unicode extension.
// Here we want to convert strings 'true', 'false' into proper Boolean
// values (not a user error).
if (HAS_OWN_PROPERTY(extensionMap, key)) {
value = extensionMap[key];
if (!IS_UNDEFINED(value)) {
updateProperty(map.property, map.type, value);
extension += updateExtension(key, value);
} else if (map.type === 'boolean') {
// Boolean keys are allowed not to have values in Unicode extension.
// Those default to true.
updateProperty(map.property, map.type, true);
extension += updateExtension(key, true);
}
}
}
}
return extension === ''? '' : '-u' + extension;
}
/**
* Given an array-like, outputs an Array with the numbered
* properties copied over and defined
* configurable: false, writable: false, enumerable: true.
* When |expandable| is true, the result array can be expanded.
*/
function freezeArray(input) {
var array = [];
var l = input.length;
for (var i = 0; i < l; i++) {
if (i in input) {
%object_define_property(array, i, {value: input[i],
configurable: false,
writable: false,
enumerable: true});
}
}
%object_define_property(array, 'length', {value: l, writable: false});
return array;
}
/* Make JS array[] out of InternalArray */
function makeArray(input) {
var array = [];
%MoveArrayContents(input, array);
return array;
}
/**
* It's sometimes desireable to leave user requested locale instead of ICU
* supported one (zh-TW is equivalent to zh-Hant-TW, so we should keep shorter
* one, if that was what user requested).
* This function returns user specified tag if its maximized form matches ICU
* resolved locale. If not we return ICU result.
*/
function getOptimalLanguageTag(original, resolved) {
// Returns Array<Object>, where each object has maximized and base properties.
// Maximized: zh -> zh-Hans-CN
// Base: zh-CN-u-ca-gregory -> zh-CN
// Take care of grandfathered or simple cases.
if (original === resolved) {
return original;
}
var locales = %GetLanguageTagVariants([original, resolved]);
if (locales[0].maximized !== locales[1].maximized) {
return resolved;
}
// Preserve extensions of resolved locale, but swap base tags with original.
var resolvedBase = new GlobalRegExp('^' + locales[1].base, 'g');
return %RegExpInternalReplace(resolvedBase, resolved, locales[0].base);
}
/**
* Returns an Object that contains all of supported locales for a given
* service.
* In addition to the supported locales we add xx-ZZ locale for each xx-Yyyy-ZZ
* that is supported. This is required by the spec.
*/
function getAvailableLocalesOf(service) {
var available = %AvailableLocalesOf(service);
for (var i in available) {
if (HAS_OWN_PROPERTY(available, i)) {
var parts = %regexp_internal_match(
/^([a-z]{2,3})-([A-Z][a-z]{3})-([A-Z]{2})$/, i);
if (!IS_NULL(parts)) {
// Build xx-ZZ. We don't care about the actual value,
// as long it's not undefined.
available[parts[1] + '-' + parts[3]] = null;
}
}
}
return available;
}
/**
* Defines a property and sets writable and enumerable to true.
* Configurable is false by default.
*/
function defineWEProperty(object, property, value) {
%object_define_property(object, property,
{value: value, writable: true, enumerable: true});
}
/**
* Adds property to an object if the value is not undefined.
* Sets configurable descriptor to false.
*/
function addWEPropertyIfDefined(object, property, value) {
if (!IS_UNDEFINED(value)) {
defineWEProperty(object, property, value);
}
}
/**
* Defines a property and sets writable, enumerable and configurable to true.
*/
function defineWECProperty(object, property, value) {
%object_define_property(object, property, {value: value,
writable: true,
enumerable: true,
configurable: true});
}
/**
* Adds property to an object if the value is not undefined.
* Sets all descriptors to true.
*/
function addWECPropertyIfDefined(object, property, value) {
if (!IS_UNDEFINED(value)) {
defineWECProperty(object, property, value);
}
}
/**
* Returns titlecased word, aMeRricA -> America.
*/
function toTitleCaseWord(word) {
return %StringToUpperCase(%_Call(StringSubstr, word, 0, 1)) +
%StringToLowerCase(%_Call(StringSubstr, word, 1));
}
/**
* Returns titlecased location, bueNos_airES -> Buenos_Aires
* or ho_cHi_minH -> Ho_Chi_Minh. It is locale-agnostic and only
* deals with ASCII only characters.
* 'of', 'au' and 'es' are special-cased and lowercased.
*/
function toTitleCaseTimezoneLocation(location) {
var match = %regexp_internal_match(GetTimezoneNameLocationPartRE(), location)
if (IS_NULL(match)) throw %make_range_error(kExpectedLocation, location);
var result = toTitleCaseWord(match[1]);
if (!IS_UNDEFINED(match[2]) && 2 < match.length) {
// The first character is a separator, '_' or '-'.
// None of IANA zone names has both '_' and '-'.
var separator = %_Call(StringSubstring, match[2], 0, 1);
var parts = %StringSplit(match[2], separator, kMaxUint32);
for (var i = 1; i < parts.length; i++) {
var part = parts[i]
var lowercasedPart = %StringToLowerCase(part);
result = result + separator +
((lowercasedPart !== 'es' &&
lowercasedPart !== 'of' && lowercasedPart !== 'au') ?
toTitleCaseWord(part) : lowercasedPart);
}
}
return result;
}
/**
* Canonicalizes the language tag, or throws in case the tag is invalid.
* ECMA 402 9.2.1 steps 7.c ii ~ v.
*/
function canonicalizeLanguageTag(localeID) {
// null is typeof 'object' so we have to do extra check.
if ((!IS_STRING(localeID) && !IS_RECEIVER(localeID)) ||
IS_NULL(localeID)) {
throw %make_type_error(kLanguageID);
}
// Optimize for the most common case; a language code alone in
// the canonical form/lowercase (e.g. "en", "fil").
if (IS_STRING(localeID) &&
!IS_NULL(%regexp_internal_match(/^[a-z]{2,3}$/, localeID))) {
return localeID;
}
var localeString = TO_STRING(localeID);
if (isStructuallyValidLanguageTag(localeString) === false) {
throw %make_range_error(kInvalidLanguageTag, localeString);
}
// ECMA 402 6.2.3
var tag = %CanonicalizeLanguageTag(localeString);
// TODO(jshin): This should not happen because the structual validity
// is already checked. If that's the case, remove this.
if (tag === 'invalid-tag') {
throw %make_range_error(kInvalidLanguageTag, localeString);
}
return tag;
}
/**
* Returns an InternalArray where all locales are canonicalized and duplicates
* removed.
* Throws on locales that are not well formed BCP47 tags.
* ECMA 402 8.2.1 steps 1 (ECMA 402 9.2.1) and 2.
*/
function canonicalizeLocaleList(locales) {
var seen = new InternalArray();
if (!IS_UNDEFINED(locales)) {
// We allow single string localeID.
if (typeof locales === 'string') {
%_Call(ArrayPush, seen, canonicalizeLanguageTag(locales));
return seen;
}
var o = TO_OBJECT(locales);
var len = TO_LENGTH(o.length);
for (var k = 0; k < len; k++) {
if (k in o) {
var value = o[k];
var tag = canonicalizeLanguageTag(value);
if (%ArrayIndexOf(seen, tag, 0) === -1) {
%_Call(ArrayPush, seen, tag);
}
}
}
}
return seen;
}
function initializeLocaleList(locales) {
return freezeArray(canonicalizeLocaleList(locales));
}
/**
* Check the structual Validity of the language tag per ECMA 402 6.2.2:
* - Well-formed per RFC 5646 2.1
* - There are no duplicate variant subtags
* - There are no duplicate singletion (extension) subtags
*
* One extra-check is done (from RFC 5646 2.2.9): the tag is compared
* against the list of grandfathered tags. However, subtags for
* primary/extended language, script, region, variant are not checked
* against the IANA language subtag registry.
*
* ICU is too permissible and lets invalid tags, like
* hant-cmn-cn, through.
*
* Returns false if the language tag is invalid.
*/
function isStructuallyValidLanguageTag(locale) {
// Check if it's well-formed, including grandfadered tags.
if (IS_NULL(%regexp_internal_match(GetLanguageTagRE(), locale))) {
return false;
}
// Just return if it's a x- form. It's all private.
if (%StringIndexOf(locale, 'x-', 0) === 0) {
return true;
}
// Check if there are any duplicate variants or singletons (extensions).
// Remove private use section.
locale = %StringSplit(locale, '-x-', kMaxUint32)[0];
// Skip language since it can match variant regex, so we start from 1.
// We are matching i-klingon here, but that's ok, since i-klingon-klingon
// is not valid and would fail LANGUAGE_TAG_RE test.
var variants = new InternalArray();
var extensions = new InternalArray();
var parts = %StringSplit(locale, '-', kMaxUint32);
for (var i = 1; i < parts.length; i++) {
var value = parts[i];
if (!IS_NULL(%regexp_internal_match(GetLanguageVariantRE(), value)) &&
extensions.length === 0) {
if (%ArrayIndexOf(variants, value, 0) === -1) {
%_Call(ArrayPush, variants, value);
} else {
return false;
}
}
if (!IS_NULL(%regexp_internal_match(GetLanguageSingletonRE(), value))) {
if (%ArrayIndexOf(extensions, value, 0) === -1) {
%_Call(ArrayPush, extensions, value);
} else {
return false;
}
}
}
return true;
}
/**
* Builds a regular expresion that validates the language tag
* against bcp47 spec.
* Uses http://tools.ietf.org/html/bcp47, section 2.1, ABNF.
* Runs on load and initializes the global REs.
*/
function BuildLanguageTagREs() {
var alpha = '[a-zA-Z]';
var digit = '[0-9]';
var alphanum = '(' + alpha + '|' + digit + ')';
var regular = '(art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|' +
'zh-min|zh-min-nan|zh-xiang)';
var irregular = '(en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|' +
'i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|' +
'i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)';
var grandfathered = '(' + irregular + '|' + regular + ')';
var privateUse = '(x(-' + alphanum + '{1,8})+)';
var singleton = '(' + digit + '|[A-WY-Za-wy-z])';
LANGUAGE_SINGLETON_RE = new GlobalRegExp('^' + singleton + '$', 'i');
var extension = '(' + singleton + '(-' + alphanum + '{2,8})+)';
var variant = '(' + alphanum + '{5,8}|(' + digit + alphanum + '{3}))';
LANGUAGE_VARIANT_RE = new GlobalRegExp('^' + variant + '$', 'i');
var region = '(' + alpha + '{2}|' + digit + '{3})';
var script = '(' + alpha + '{4})';
var extLang = '(' + alpha + '{3}(-' + alpha + '{3}){0,2})';
var language = '(' + alpha + '{2,3}(-' + extLang + ')?|' + alpha + '{4}|' +
alpha + '{5,8})';
var langTag = language + '(-' + script + ')?(-' + region + ')?(-' +
variant + ')*(-' + extension + ')*(-' + privateUse + ')?';
var languageTag =
'^(' + langTag + '|' + privateUse + '|' + grandfathered + ')$';
LANGUAGE_TAG_RE = new GlobalRegExp(languageTag, 'i');
}
var resolvedAccessor = {
get() {
%IncrementUseCounter(kIntlResolved);
return this[resolvedSymbol];
},
set(value) {
this[resolvedSymbol] = value;
}
};
// ECMA 402 section 8.2.1
InstallFunction(Intl, 'getCanonicalLocales', function(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
return makeArray(canonicalizeLocaleList(locales));
}
);
/**
* Initializes the given object so it's a valid Collator instance.
* Useful for subclassing.
*/
function initializeCollator(collator, locales, options) {
if (%IsInitializedIntlObject(collator)) {
throw %make_type_error(kReinitializeIntl, "Collator");
}
if (IS_UNDEFINED(options)) {
options = {};
}
var getOption = getGetOption(options, 'collator');
var internalOptions = {};
defineWEProperty(internalOptions, 'usage', getOption(
'usage', 'string', ['sort', 'search'], 'sort'));
var sensitivity = getOption('sensitivity', 'string',
['base', 'accent', 'case', 'variant']);
if (IS_UNDEFINED(sensitivity) && internalOptions.usage === 'sort') {
sensitivity = 'variant';
}
defineWEProperty(internalOptions, 'sensitivity', sensitivity);
defineWEProperty(internalOptions, 'ignorePunctuation', getOption(
'ignorePunctuation', 'boolean', UNDEFINED, false));
var locale = resolveLocale('collator', locales, options);
// TODO(jshin): ICU now can take kb, kc, etc. Switch over to using ICU
// directly. See Collator::InitializeCollator and
// Collator::CreateICUCollator in src/i18n.cc
// ICU can't take kb, kc... parameters through localeID, so we need to pass
// them as options.
// One exception is -co- which has to be part of the extension, but only for
// usage: sort, and its value can't be 'standard' or 'search'.
var extensionMap = parseExtension(locale.extension);
/**
* Map of Unicode extensions to option properties, and their values and types,
* for a collator.
*/
var COLLATOR_KEY_MAP = {
'kn': {'property': 'numeric', 'type': 'boolean'},
'kf': {'property': 'caseFirst', 'type': 'string',
'values': ['false', 'lower', 'upper']}
};
setOptions(
options, extensionMap, COLLATOR_KEY_MAP, getOption, internalOptions);
var collation = 'default';
var extension = '';
if (HAS_OWN_PROPERTY(extensionMap, 'co') && internalOptions.usage === 'sort') {
/**
* Allowed -u-co- values. List taken from:
* http://unicode.org/repos/cldr/trunk/common/bcp47/collation.xml
*/
var ALLOWED_CO_VALUES = [
'big5han', 'dict', 'direct', 'ducet', 'gb2312', 'phonebk', 'phonetic',
'pinyin', 'reformed', 'searchjl', 'stroke', 'trad', 'unihan', 'zhuyin'
];
if (%ArrayIndexOf(ALLOWED_CO_VALUES, extensionMap.co, 0) !== -1) {
extension = '-u-co-' + extensionMap.co;
// ICU can't tell us what the collation is, so save user's input.
collation = extensionMap.co;
}
} else if (internalOptions.usage === 'search') {
extension = '-u-co-search';
}
defineWEProperty(internalOptions, 'collation', collation);
var requestedLocale = locale.locale + extension;
// We define all properties C++ code may produce, to prevent security
// problems. If malicious user decides to redefine Object.prototype.locale
// we can't just use plain x.locale = 'us' or in C++ Set("locale", "us").
// %object_define_properties will either succeed defining or throw an error.
var resolved = %object_define_properties({}, {
caseFirst: {writable: true},
collation: {value: internalOptions.collation, writable: true},
ignorePunctuation: {writable: true},
locale: {writable: true},
numeric: {writable: true},
requestedLocale: {value: requestedLocale, writable: true},
sensitivity: {writable: true},
strength: {writable: true},
usage: {value: internalOptions.usage, writable: true}
});
var internalCollator = %CreateCollator(requestedLocale,
internalOptions,
resolved);
// Writable, configurable and enumerable are set to false by default.
%MarkAsInitializedIntlObjectOfType(collator, 'collator', internalCollator);
collator[resolvedSymbol] = resolved;
return collator;
}
/**
* Constructs Intl.Collator object given optional locales and options
* parameters.
*
* @constructor
*/
InstallConstructor(Intl, 'Collator', function() {
var locales = arguments[0];
var options = arguments[1];
if (!this || this === Intl) {
// Constructor is called as a function.
return new Intl.Collator(locales, options);
}
return initializeCollator(TO_OBJECT(this), locales, options);
}
);
/**
* Collator resolvedOptions method.
*/
InstallFunction(Intl.Collator.prototype, 'resolvedOptions', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (!%IsInitializedIntlObjectOfType(this, 'collator')) {
throw %make_type_error(kResolvedOptionsCalledOnNonObject, "Collator");
}
var coll = this;
var locale = getOptimalLanguageTag(coll[resolvedSymbol].requestedLocale,
coll[resolvedSymbol].locale);
return {
locale: locale,
usage: coll[resolvedSymbol].usage,
sensitivity: coll[resolvedSymbol].sensitivity,
ignorePunctuation: coll[resolvedSymbol].ignorePunctuation,
numeric: coll[resolvedSymbol].numeric,
caseFirst: coll[resolvedSymbol].caseFirst,
collation: coll[resolvedSymbol].collation
};
}
);
/**
* Returns the subset of the given locale list for which this locale list
* has a matching (possibly fallback) locale. Locales appear in the same
* order in the returned list as in the input list.
* Options are optional parameter.
*/
InstallFunction(Intl.Collator, 'supportedLocalesOf', function(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
return supportedLocalesOf('collator', locales, arguments[1]);
}
);
/**
* When the compare method is called with two arguments x and y, it returns a
* Number other than NaN that represents the result of a locale-sensitive
* String comparison of x with y.
* The result is intended to order String values in the sort order specified
* by the effective locale and collation options computed during construction
* of this Collator object, and will be negative, zero, or positive, depending
* on whether x comes before y in the sort order, the Strings are equal under
* the sort order, or x comes after y in the sort order, respectively.
*/
function compare(collator, x, y) {
return %InternalCompare(%GetImplFromInitializedIntlObject(collator),
TO_STRING(x), TO_STRING(y));
};
AddBoundMethod(Intl.Collator, 'compare', compare, 2, 'collator');
/**
* Verifies that the input is a well-formed ISO 4217 currency code.
* Don't uppercase to test. It could convert invalid code into a valid one.
* For example \u00DFP (Eszett+P) becomes SSP.
*/
function isWellFormedCurrencyCode(currency) {
return typeof currency == "string" && currency.length == 3 &&
IS_NULL(%regexp_internal_match(/[^A-Za-z]/, currency));
}
/**
* Returns the valid digit count for a property, or throws RangeError on
* a value out of the range.
*/
function getNumberOption(options, property, min, max, fallback) {
var value = options[property];
if (!IS_UNDEFINED(value)) {
value = TO_NUMBER(value);
if (NUMBER_IS_NAN(value) || value < min || value > max) {
throw %make_range_error(kPropertyValueOutOfRange, property);
}
return %math_floor(value);
}
return fallback;
}
var patternAccessor = {
get() {
%IncrementUseCounter(kIntlPattern);
return this[patternSymbol];
},
set(value) {
this[patternSymbol] = value;
}
};
/**
* Initializes the given object so it's a valid NumberFormat instance.
* Useful for subclassing.
*/
function initializeNumberFormat(numberFormat, locales, options) {
if (%IsInitializedIntlObject(numberFormat)) {
throw %make_type_error(kReinitializeIntl, "NumberFormat");
}
if (IS_UNDEFINED(options)) {
options = {};
}
var getOption = getGetOption(options, 'numberformat');
var locale = resolveLocale('numberformat', locales, options);
var internalOptions = {};
defineWEProperty(internalOptions, 'style', getOption(
'style', 'string', ['decimal', 'percent', 'currency'], 'decimal'));
var currency = getOption('currency', 'string');
if (!IS_UNDEFINED(currency) && !isWellFormedCurrencyCode(currency)) {
throw %make_range_error(kInvalidCurrencyCode, currency);
}
if (internalOptions.style === 'currency' && IS_UNDEFINED(currency)) {
throw %make_type_error(kCurrencyCode);
}
var currencyDisplay = getOption(
'currencyDisplay', 'string', ['code', 'symbol', 'name'], 'symbol');
if (internalOptions.style === 'currency') {
defineWEProperty(internalOptions, 'currency', %StringToUpperCase(currency));
defineWEProperty(internalOptions, 'currencyDisplay', currencyDisplay);
}
// Digit ranges.
var mnid = getNumberOption(options, 'minimumIntegerDigits', 1, 21, 1);
defineWEProperty(internalOptions, 'minimumIntegerDigits', mnid);
var mnfd = options['minimumFractionDigits'];
var mxfd = options['maximumFractionDigits'];
if (!IS_UNDEFINED(mnfd) || internalOptions.style !== 'currency') {
mnfd = getNumberOption(options, 'minimumFractionDigits', 0, 20, 0);
defineWEProperty(internalOptions, 'minimumFractionDigits', mnfd);
}
if (!IS_UNDEFINED(mxfd) || internalOptions.style !== 'currency') {
var min_mxfd = internalOptions.style === 'percent' ? 0 : 3;
mnfd = IS_UNDEFINED(mnfd) ? 0 : mnfd;
var fallback_limit = (mnfd > min_mxfd) ? mnfd : min_mxfd;
mxfd = getNumberOption(options, 'maximumFractionDigits', mnfd, 20, fallback_limit);
defineWEProperty(internalOptions, 'maximumFractionDigits', mxfd);
}
var mnsd = options['minimumSignificantDigits'];
var mxsd = options['maximumSignificantDigits'];
if (!IS_UNDEFINED(mnsd) || !IS_UNDEFINED(mxsd)) {
mnsd = getNumberOption(options, 'minimumSignificantDigits', 1, 21, 0);
defineWEProperty(internalOptions, 'minimumSignificantDigits', mnsd);
mxsd = getNumberOption(options, 'maximumSignificantDigits', mnsd, 21, 21);
defineWEProperty(internalOptions, 'maximumSignificantDigits', mxsd);
}
// Grouping.
defineWEProperty(internalOptions, 'useGrouping', getOption(
'useGrouping', 'boolean', UNDEFINED, true));
// ICU prefers options to be passed using -u- extension key/values for
// number format, so we need to build that.
var extensionMap = parseExtension(locale.extension);
/**
* Map of Unicode extensions to option properties, and their values and types,
* for a number format.
*/
var NUMBER_FORMAT_KEY_MAP = {
'nu': {'property': UNDEFINED, 'type': 'string'}
};
var extension = setOptions(options, extensionMap, NUMBER_FORMAT_KEY_MAP,
getOption, internalOptions);
var requestedLocale = locale.locale + extension;
var resolved = %object_define_properties({}, {
currency: {writable: true},
currencyDisplay: {writable: true},
locale: {writable: true},
maximumFractionDigits: {writable: true},
minimumFractionDigits: {writable: true},
minimumIntegerDigits: {writable: true},
numberingSystem: {writable: true},
requestedLocale: {value: requestedLocale, writable: true},
style: {value: internalOptions.style, writable: true},
useGrouping: {writable: true}
});
if (HAS_OWN_PROPERTY(internalOptions, 'minimumSignificantDigits')) {
defineWEProperty(resolved, 'minimumSignificantDigits', UNDEFINED);
}
if (HAS_OWN_PROPERTY(internalOptions, 'maximumSignificantDigits')) {
defineWEProperty(resolved, 'maximumSignificantDigits', UNDEFINED);
}
var formatter = %CreateNumberFormat(requestedLocale,
internalOptions,
resolved);
if (internalOptions.style === 'currency') {
%object_define_property(resolved, 'currencyDisplay',
{value: currencyDisplay, writable: true});
}
%MarkAsInitializedIntlObjectOfType(numberFormat, 'numberformat', formatter);
numberFormat[resolvedSymbol] = resolved;
return numberFormat;
}
/**
* Constructs Intl.NumberFormat object given optional locales and options
* parameters.
*
* @constructor
*/
InstallConstructor(Intl, 'NumberFormat', function() {
var locales = arguments[0];
var options = arguments[1];
if (!this || this === Intl) {
// Constructor is called as a function.
return new Intl.NumberFormat(locales, options);
}
return initializeNumberFormat(TO_OBJECT(this), locales, options);
}
);
/**
* NumberFormat resolvedOptions method.
*/
InstallFunction(Intl.NumberFormat.prototype, 'resolvedOptions', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (!%IsInitializedIntlObjectOfType(this, 'numberformat')) {
throw %make_type_error(kResolvedOptionsCalledOnNonObject, "NumberFormat");
}
var format = this;
var locale = getOptimalLanguageTag(format[resolvedSymbol].requestedLocale,
format[resolvedSymbol].locale);
var result = {
locale: locale,
numberingSystem: format[resolvedSymbol].numberingSystem,
style: format[resolvedSymbol].style,
useGrouping: format[resolvedSymbol].useGrouping,
minimumIntegerDigits: format[resolvedSymbol].minimumIntegerDigits,
minimumFractionDigits: format[resolvedSymbol].minimumFractionDigits,
maximumFractionDigits: format[resolvedSymbol].maximumFractionDigits,
};
if (result.style === 'currency') {
defineWECProperty(result, 'currency', format[resolvedSymbol].currency);
defineWECProperty(result, 'currencyDisplay',
format[resolvedSymbol].currencyDisplay);
}
if (HAS_OWN_PROPERTY(format[resolvedSymbol], 'minimumSignificantDigits')) {
defineWECProperty(result, 'minimumSignificantDigits',
format[resolvedSymbol].minimumSignificantDigits);
}
if (HAS_OWN_PROPERTY(format[resolvedSymbol], 'maximumSignificantDigits')) {
defineWECProperty(result, 'maximumSignificantDigits',
format[resolvedSymbol].maximumSignificantDigits);
}
return result;
}
);
/**
* Returns the subset of the given locale list for which this locale list
* has a matching (possibly fallback) locale. Locales appear in the same
* order in the returned list as in the input list.
* Options are optional parameter.
*/
InstallFunction(Intl.NumberFormat, 'supportedLocalesOf', function(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
return supportedLocalesOf('numberformat', locales, arguments[1]);
}
);
/**
* Returns a String value representing the result of calling ToNumber(value)
* according to the effective locale and the formatting options of this
* NumberFormat.
*/
function formatNumber(formatter, value) {
// Spec treats -0 and +0 as 0.
var number = TO_NUMBER(value) + 0;
return %InternalNumberFormat(%GetImplFromInitializedIntlObject(formatter),
number);
}
AddBoundMethod(Intl.NumberFormat, 'format', formatNumber, 1, 'numberformat');
/**
* Returns a string that matches LDML representation of the options object.
*/
function toLDMLString(options) {
var getOption = getGetOption(options, 'dateformat');
var ldmlString = '';
var option = getOption('weekday', 'string', ['narrow', 'short', 'long']);
ldmlString += appendToLDMLString(
option, {narrow: 'EEEEE', short: 'EEE', long: 'EEEE'});
option = getOption('era', 'string', ['narrow', 'short', 'long']);
ldmlString += appendToLDMLString(
option, {narrow: 'GGGGG', short: 'GGG', long: 'GGGG'});
option = getOption('year', 'string', ['2-digit', 'numeric']);
ldmlString += appendToLDMLString(option, {'2-digit': 'yy', 'numeric': 'y'});
option = getOption('month', 'string',
['2-digit', 'numeric', 'narrow', 'short', 'long']);
ldmlString += appendToLDMLString(option, {'2-digit': 'MM', 'numeric': 'M',
'narrow': 'MMMMM', 'short': 'MMM', 'long': 'MMMM'});
option = getOption('day', 'string', ['2-digit', 'numeric']);
ldmlString += appendToLDMLString(
option, {'2-digit': 'dd', 'numeric': 'd'});
var hr12 = getOption('hour12', 'boolean');
option = getOption('hour', 'string', ['2-digit', 'numeric']);
if (IS_UNDEFINED(hr12)) {
ldmlString += appendToLDMLString(option, {'2-digit': 'jj', 'numeric': 'j'});
} else if (hr12 === true) {
ldmlString += appendToLDMLString(option, {'2-digit': 'hh', 'numeric': 'h'});
} else {
ldmlString += appendToLDMLString(option, {'2-digit': 'HH', 'numeric': 'H'});
}
option = getOption('minute', 'string', ['2-digit', 'numeric']);
ldmlString += appendToLDMLString(option, {'2-digit': 'mm', 'numeric': 'm'});
option = getOption('second', 'string', ['2-digit', 'numeric']);
ldmlString += appendToLDMLString(option, {'2-digit': 'ss', 'numeric': 's'});
option = getOption('timeZoneName', 'string', ['short', 'long']);
ldmlString += appendToLDMLString(option, {short: 'z', long: 'zzzz'});
return ldmlString;
}
/**
* Returns either LDML equivalent of the current option or empty string.
*/
function appendToLDMLString(option, pairs) {
if (!IS_UNDEFINED(option)) {
return pairs[option];
} else {
return '';
}
}
/**
* Returns object that matches LDML representation of the date.
*/
function fromLDMLString(ldmlString) {
// First remove '' quoted text, so we lose 'Uhr' strings.
ldmlString = %RegExpInternalReplace(GetQuotedStringRE(), ldmlString, '');
var options = {};
var match = %regexp_internal_match(/E{3,5}/, ldmlString);
options = appendToDateTimeObject(
options, 'weekday', match, {EEEEE: 'narrow', EEE: 'short', EEEE: 'long'});
match = %regexp_internal_match(/G{3,5}/, ldmlString);
options = appendToDateTimeObject(
options, 'era', match, {GGGGG: 'narrow', GGG: 'short', GGGG: 'long'});
match = %regexp_internal_match(/y{1,2}/, ldmlString);
options = appendToDateTimeObject(
options, 'year', match, {y: 'numeric', yy: '2-digit'});
match = %regexp_internal_match(/M{1,5}/, ldmlString);
options = appendToDateTimeObject(options, 'month', match, {MM: '2-digit',
M: 'numeric', MMMMM: 'narrow', MMM: 'short', MMMM: 'long'});
// Sometimes we get L instead of M for month - standalone name.
match = %regexp_internal_match(/L{1,5}/, ldmlString);
options = appendToDateTimeObject(options, 'month', match, {LL: '2-digit',
L: 'numeric', LLLLL: 'narrow', LLL: 'short', LLLL: 'long'});
match = %regexp_internal_match(/d{1,2}/, ldmlString);
options = appendToDateTimeObject(
options, 'day', match, {d: 'numeric', dd: '2-digit'});
match = %regexp_internal_match(/h{1,2}/, ldmlString);
if (match !== null) {
options['hour12'] = true;
}
options = appendToDateTimeObject(
options, 'hour', match, {h: 'numeric', hh: '2-digit'});
match = %regexp_internal_match(/H{1,2}/, ldmlString);
if (match !== null) {
options['hour12'] = false;
}
options = appendToDateTimeObject(
options, 'hour', match, {H: 'numeric', HH: '2-digit'});
match = %regexp_internal_match(/m{1,2}/, ldmlString);
options = appendToDateTimeObject(
options, 'minute', match, {m: 'numeric', mm: '2-digit'});
match = %regexp_internal_match(/s{1,2}/, ldmlString);
options = appendToDateTimeObject(
options, 'second', match, {s: 'numeric', ss: '2-digit'});
match = %regexp_internal_match(/z|zzzz/, ldmlString);
options = appendToDateTimeObject(
options, 'timeZoneName', match, {z: 'short', zzzz: 'long'});
return options;
}
function appendToDateTimeObject(options, option, match, pairs) {
if (IS_NULL(match)) {
if (!HAS_OWN_PROPERTY(options, option)) {
defineWEProperty(options, option, UNDEFINED);
}
return options;
}
var property = match[0];
defineWEProperty(options, option, pairs[property]);
return options;
}
/**
* Returns options with at least default values in it.
*/
function toDateTimeOptions(options, required, defaults) {
if (IS_UNDEFINED(options)) {
options = {};
} else {
options = TO_OBJECT(options);
}
var needsDefault = true;
if ((required === 'date' || required === 'any') &&
(!IS_UNDEFINED(options.weekday) || !IS_UNDEFINED(options.year) ||
!IS_UNDEFINED(options.month) || !IS_UNDEFINED(options.day))) {
needsDefault = false;
}
if ((required === 'time' || required === 'any') &&
(!IS_UNDEFINED(options.hour) || !IS_UNDEFINED(options.minute) ||
!IS_UNDEFINED(options.second))) {
needsDefault = false;
}
if (needsDefault && (defaults === 'date' || defaults === 'all')) {
%object_define_property(options, 'year', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
%object_define_property(options, 'month', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
%object_define_property(options, 'day', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
}
if (needsDefault && (defaults === 'time' || defaults === 'all')) {
%object_define_property(options, 'hour', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
%object_define_property(options, 'minute', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
%object_define_property(options, 'second', {value: 'numeric',
writable: true,
enumerable: true,
configurable: true});
}
return options;
}
/**
* Initializes the given object so it's a valid DateTimeFormat instance.
* Useful for subclassing.
*/
function initializeDateTimeFormat(dateFormat, locales, options) {
if (%IsInitializedIntlObject(dateFormat)) {
throw %make_type_error(kReinitializeIntl, "DateTimeFormat");
}
if (IS_UNDEFINED(options)) {
options = {};
}
var locale = resolveLocale('dateformat', locales, options);
options = toDateTimeOptions(options, 'any', 'date');
var getOption = getGetOption(options, 'dateformat');
// We implement only best fit algorithm, but still need to check
// if the formatMatcher values are in range.
var matcher = getOption('formatMatcher', 'string',
['basic', 'best fit'], 'best fit');
// Build LDML string for the skeleton that we pass to the formatter.
var ldmlString = toLDMLString(options);
// Filter out supported extension keys so we know what to put in resolved
// section later on.
// We need to pass calendar and number system to the method.
var tz = canonicalizeTimeZoneID(options.timeZone);
// ICU prefers options to be passed using -u- extension key/values, so
// we need to build that.
var internalOptions = {};
var extensionMap = parseExtension(locale.extension);
/**
* Map of Unicode extensions to option properties, and their values and types,
* for a date/time format.
*/
var DATETIME_FORMAT_KEY_MAP = {
'ca': {'property': UNDEFINED, 'type': 'string'},
'nu': {'property': UNDEFINED, 'type': 'string'}
};
var extension = setOptions(options, extensionMap, DATETIME_FORMAT_KEY_MAP,
getOption, internalOptions);
var requestedLocale = locale.locale + extension;
var resolved = %object_define_properties({}, {
calendar: {writable: true},
day: {writable: true},
era: {writable: true},
hour12: {writable: true},
hour: {writable: true},
locale: {writable: true},
minute: {writable: true},
month: {writable: true},
numberingSystem: {writable: true},
[patternSymbol]: {writable: true},
requestedLocale: {value: requestedLocale, writable: true},
second: {writable: true},
timeZone: {writable: true},
timeZoneName: {writable: true},
tz: {value: tz, writable: true},
weekday: {writable: true},
year: {writable: true}
});
var formatter = %CreateDateTimeFormat(
requestedLocale, {skeleton: ldmlString, timeZone: tz}, resolved);
if (resolved.timeZone === "Etc/Unknown") {
throw %make_range_error(kUnsupportedTimeZone, tz);
}
%MarkAsInitializedIntlObjectOfType(dateFormat, 'dateformat', formatter);
dateFormat[resolvedSymbol] = resolved;
return dateFormat;
}
/**
* Constructs Intl.DateTimeFormat object given optional locales and options
* parameters.
*
* @constructor
*/
InstallConstructor(Intl, 'DateTimeFormat', function() {
var locales = arguments[0];
var options = arguments[1];
if (!this || this === Intl) {
// Constructor is called as a function.
return new Intl.DateTimeFormat(locales, options);
}
return initializeDateTimeFormat(TO_OBJECT(this), locales, options);
}
);
/**
* DateTimeFormat resolvedOptions method.
*/
InstallFunction(Intl.DateTimeFormat.prototype, 'resolvedOptions', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (!%IsInitializedIntlObjectOfType(this, 'dateformat')) {
throw %make_type_error(kResolvedOptionsCalledOnNonObject, "DateTimeFormat");
}
/**
* Maps ICU calendar names to LDML/BCP47 types for key 'ca'.
* See typeMap section in third_party/icu/source/data/misc/keyTypeData.txt
* and
* http://www.unicode.org/repos/cldr/tags/latest/common/bcp47/calendar.xml
*/
var ICU_CALENDAR_MAP = {
'gregorian': 'gregory',
'ethiopic-amete-alem': 'ethioaa'
};
var format = this;
var fromPattern = fromLDMLString(format[resolvedSymbol][patternSymbol]);
var userCalendar = ICU_CALENDAR_MAP[format[resolvedSymbol].calendar];
if (IS_UNDEFINED(userCalendar)) {
// No match means that ICU's legacy name is identical to LDML/BCP type.
userCalendar = format[resolvedSymbol].calendar;
}
var locale = getOptimalLanguageTag(format[resolvedSymbol].requestedLocale,
format[resolvedSymbol].locale);
var result = {
locale: locale,
numberingSystem: format[resolvedSymbol].numberingSystem,
calendar: userCalendar,
timeZone: format[resolvedSymbol].timeZone
};
addWECPropertyIfDefined(result, 'timeZoneName', fromPattern.timeZoneName);
addWECPropertyIfDefined(result, 'era', fromPattern.era);
addWECPropertyIfDefined(result, 'year', fromPattern.year);
addWECPropertyIfDefined(result, 'month', fromPattern.month);
addWECPropertyIfDefined(result, 'day', fromPattern.day);
addWECPropertyIfDefined(result, 'weekday', fromPattern.weekday);
addWECPropertyIfDefined(result, 'hour12', fromPattern.hour12);
addWECPropertyIfDefined(result, 'hour', fromPattern.hour);
addWECPropertyIfDefined(result, 'minute', fromPattern.minute);
addWECPropertyIfDefined(result, 'second', fromPattern.second);
return result;
}
);
/**
* Returns the subset of the given locale list for which this locale list
* has a matching (possibly fallback) locale. Locales appear in the same
* order in the returned list as in the input list.
* Options are optional parameter.
*/
InstallFunction(Intl.DateTimeFormat, 'supportedLocalesOf', function(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
return supportedLocalesOf('dateformat', locales, arguments[1]);
}
);
/**
* Returns a String value representing the result of calling ToNumber(date)
* according to the effective locale and the formatting options of this
* DateTimeFormat.
*/
function formatDate(formatter, dateValue) {
var dateMs;
if (IS_UNDEFINED(dateValue)) {
dateMs = %DateCurrentTime();
} else {
dateMs = TO_NUMBER(dateValue);
}
if (!NUMBER_IS_FINITE(dateMs)) throw %make_range_error(kDateRange);
return %InternalDateFormat(%GetImplFromInitializedIntlObject(formatter),
new GlobalDate(dateMs));
}
function FormatDateToParts(dateValue) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "Intl.DateTimeFormat.prototype.formatToParts");
if (!IS_OBJECT(this)) {
throw %make_type_error(kCalledOnNonObject, this);
}
var dateMs;
if (IS_UNDEFINED(dateValue)) {
dateMs = %DateCurrentTime();
} else {
dateMs = TO_NUMBER(dateValue);
}
if (!NUMBER_IS_FINITE(dateMs)) throw %make_range_error(kDateRange);
return %InternalDateFormatToParts(
%GetImplFromInitializedIntlObject(this), new GlobalDate(dateMs));
}
%FunctionSetLength(FormatDateToParts, 0);
// 0 because date is optional argument.
AddBoundMethod(Intl.DateTimeFormat, 'format', formatDate, 0, 'dateformat');
/**
* Returns canonical Area/Location(/Location) name, or throws an exception
* if the zone name is invalid IANA name.
*/
function canonicalizeTimeZoneID(tzID) {
// Skip undefined zones.
if (IS_UNDEFINED(tzID)) {
return tzID;
}
// Convert zone name to string.
tzID = TO_STRING(tzID);
// Special case handling (UTC, GMT).
var upperID = %StringToUpperCase(tzID);
if (upperID === 'UTC' || upperID === 'GMT' ||
upperID === 'ETC/UTC' || upperID === 'ETC/GMT') {
return 'UTC';
}
// TODO(jshin): Add support for Etc/GMT[+-]([1-9]|1[0-2])
// We expect only _, '-' and / beside ASCII letters.
// All inputs should conform to Area/Location(/Location)* from now on.
var match = %regexp_internal_match(GetTimezoneNameCheckRE(), tzID);
if (IS_NULL(match)) throw %make_range_error(kExpectedTimezoneID, tzID);
var result = toTitleCaseTimezoneLocation(match[1]) + '/' +
toTitleCaseTimezoneLocation(match[2]);
if (!IS_UNDEFINED(match[3]) && 3 < match.length) {
var locations = %StringSplit(match[3], '/', kMaxUint32);
// The 1st element is empty. Starts with i=1.
for (var i = 1; i < locations.length; i++) {
result = result + '/' + toTitleCaseTimezoneLocation(locations[i]);
}
}
return result;
}
/**
* Initializes the given object so it's a valid BreakIterator instance.
* Useful for subclassing.
*/
function initializeBreakIterator(iterator, locales, options) {
if (%IsInitializedIntlObject(iterator)) {
throw %make_type_error(kReinitializeIntl, "v8BreakIterator");
}
if (IS_UNDEFINED(options)) {
options = {};
}
var getOption = getGetOption(options, 'breakiterator');
var internalOptions = {};
defineWEProperty(internalOptions, 'type', getOption(
'type', 'string', ['character', 'word', 'sentence', 'line'], 'word'));
var locale = resolveLocale('breakiterator', locales, options);
var resolved = %object_define_properties({}, {
requestedLocale: {value: locale.locale, writable: true},
type: {value: internalOptions.type, writable: true},
locale: {writable: true}
});
var internalIterator = %CreateBreakIterator(locale.locale,
internalOptions,
resolved);
%MarkAsInitializedIntlObjectOfType(iterator, 'breakiterator',
internalIterator);
iterator[resolvedSymbol] = resolved;
return iterator;
}
/**
* Constructs Intl.v8BreakIterator object given optional locales and options
* parameters.
*
* @constructor
*/
InstallConstructor(Intl, 'v8BreakIterator', function() {
var locales = arguments[0];
var options = arguments[1];
if (!this || this === Intl) {
// Constructor is called as a function.
return new Intl.v8BreakIterator(locales, options);
}
return initializeBreakIterator(TO_OBJECT(this), locales, options);
}
);
/**
* BreakIterator resolvedOptions method.
*/
InstallFunction(Intl.v8BreakIterator.prototype, 'resolvedOptions',
function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (!%IsInitializedIntlObjectOfType(this, 'breakiterator')) {
throw %make_type_error(kResolvedOptionsCalledOnNonObject, "v8BreakIterator");
}
var segmenter = this;
var locale =
getOptimalLanguageTag(segmenter[resolvedSymbol].requestedLocale,
segmenter[resolvedSymbol].locale);
return {
locale: locale,
type: segmenter[resolvedSymbol].type
};
}
);
/**
* Returns the subset of the given locale list for which this locale list
* has a matching (possibly fallback) locale. Locales appear in the same
* order in the returned list as in the input list.
* Options are optional parameter.
*/
InstallFunction(Intl.v8BreakIterator, 'supportedLocalesOf',
function(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
return supportedLocalesOf('breakiterator', locales, arguments[1]);
}
);
/**
* Adopts text to segment using the iterator. Old text, if present,
* gets discarded.
*/
function adoptText(iterator, text) {
%BreakIteratorAdoptText(%GetImplFromInitializedIntlObject(iterator),
TO_STRING(text));
}
/**
* Returns index of the first break in the string and moves current pointer.
*/
function first(iterator) {
return %BreakIteratorFirst(%GetImplFromInitializedIntlObject(iterator));
}
/**
* Returns the index of the next break and moves the pointer.
*/
function next(iterator) {
return %BreakIteratorNext(%GetImplFromInitializedIntlObject(iterator));
}
/**
* Returns index of the current break.
*/
function current(iterator) {
return %BreakIteratorCurrent(%GetImplFromInitializedIntlObject(iterator));
}
/**
* Returns type of the current break.
*/
function breakType(iterator) {
return %BreakIteratorBreakType(%GetImplFromInitializedIntlObject(iterator));
}
AddBoundMethod(Intl.v8BreakIterator, 'adoptText', adoptText, 1,
'breakiterator');
AddBoundMethod(Intl.v8BreakIterator, 'first', first, 0, 'breakiterator');
AddBoundMethod(Intl.v8BreakIterator, 'next', next, 0, 'breakiterator');
AddBoundMethod(Intl.v8BreakIterator, 'current', current, 0, 'breakiterator');
AddBoundMethod(Intl.v8BreakIterator, 'breakType', breakType, 0,
'breakiterator');
// Save references to Intl objects and methods we use, for added security.
var savedObjects = {
'collator': Intl.Collator,
'numberformat': Intl.NumberFormat,
'dateformatall': Intl.DateTimeFormat,
'dateformatdate': Intl.DateTimeFormat,
'dateformattime': Intl.DateTimeFormat
};
// Default (created with undefined locales and options parameters) collator,
// number and date format instances. They'll be created as needed.
var defaultObjects = {
'collator': UNDEFINED,
'numberformat': UNDEFINED,
'dateformatall': UNDEFINED,
'dateformatdate': UNDEFINED,
'dateformattime': UNDEFINED,
};
function clearDefaultObjects() {
defaultObjects['dateformatall'] = UNDEFINED;
defaultObjects['dateformatdate'] = UNDEFINED;
defaultObjects['dateformattime'] = UNDEFINED;
}
var date_cache_version = 0;
function checkDateCacheCurrent() {
var new_date_cache_version = %DateCacheVersion();
if (new_date_cache_version == date_cache_version) {
return;
}
date_cache_version = new_date_cache_version;
clearDefaultObjects();
}
/**
* Returns cached or newly created instance of a given service.
* We cache only default instances (where no locales or options are provided).
*/
function cachedOrNewService(service, locales, options, defaults) {
var useOptions = (IS_UNDEFINED(defaults)) ? options : defaults;
if (IS_UNDEFINED(locales) && IS_UNDEFINED(options)) {
checkDateCacheCurrent();
if (IS_UNDEFINED(defaultObjects[service])) {
defaultObjects[service] = new savedObjects[service](locales, useOptions);
}
return defaultObjects[service];
}
return new savedObjects[service](locales, useOptions);
}
function LocaleConvertCase(s, locales, isToUpper) {
// ECMA 402 section 13.1.2 steps 1 through 12.
var language;
// Optimize for the most common two cases. initializeLocaleList() can handle
// them as well, but it's rather slow accounting for over 60% of
// toLocale{U,L}Case() and about 40% of toLocale{U,L}Case("<locale>").
if (IS_UNDEFINED(locales)) {
language = GetDefaultICULocaleJS();
} else if (IS_STRING(locales)) {
language = canonicalizeLanguageTag(locales);
} else {
var locales = initializeLocaleList(locales);
language = locales.length > 0 ? locales[0] : GetDefaultICULocaleJS();
}
// StringSplit is slower than this.
var pos = %StringIndexOf(language, '-', 0);
if (pos != -1) {
language = %_Call(StringSubstring, language, 0, pos);
}
var CUSTOM_CASE_LANGUAGES = ['az', 'el', 'lt', 'tr'];
var langIndex = %ArrayIndexOf(CUSTOM_CASE_LANGUAGES, language, 0);
if (langIndex == -1) {
// language-independent case conversion.
return isToUpper ? %StringToUpperCaseI18N(s) : %StringToLowerCaseI18N(s);
}
return %StringLocaleConvertCase(s, isToUpper,
CUSTOM_CASE_LANGUAGES[langIndex]);
}
/**
* Compares this and that, and returns less than 0, 0 or greater than 0 value.
* Overrides the built-in method.
*/
OverrideFunction(GlobalString.prototype, 'localeCompare', function(that) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (IS_NULL_OR_UNDEFINED(this)) {
throw %make_type_error(kMethodInvokedOnNullOrUndefined);
}
var locales = arguments[1];
var options = arguments[2];
var collator = cachedOrNewService('collator', locales, options);
return compare(collator, this, that);
}
);
/**
* Unicode normalization. This method is called with one argument that
* specifies the normalization form.
* If none is specified, "NFC" is assumed.
* If the form is not one of "NFC", "NFD", "NFKC", or "NFKD", then throw
* a RangeError Exception.
*/
OverrideFunction(GlobalString.prototype, 'normalize', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "String.prototype.normalize");
var s = TO_STRING(this);
var formArg = arguments[0];
var form = IS_UNDEFINED(formArg) ? 'NFC' : TO_STRING(formArg);
var NORMALIZATION_FORMS = ['NFC', 'NFD', 'NFKC', 'NFKD'];
var normalizationForm = %ArrayIndexOf(NORMALIZATION_FORMS, form, 0);
if (normalizationForm === -1) {
throw %make_range_error(kNormalizationForm,
%_Call(ArrayJoin, NORMALIZATION_FORMS, ', '));
}
return %StringNormalize(s, normalizationForm);
}
);
function ToLowerCaseI18N() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLowerCase");
var s = TO_STRING(this);
return %StringToLowerCaseI18N(s);
}
function ToUpperCaseI18N() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "String.prototype.toUpperCase");
var s = TO_STRING(this);
return %StringToUpperCaseI18N(s);
}
function ToLocaleLowerCaseI18N(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLocaleLowerCase");
return LocaleConvertCase(TO_STRING(this), locales, false);
}
%FunctionSetLength(ToLocaleLowerCaseI18N, 0);
function ToLocaleUpperCaseI18N(locales) {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLocaleUpperCase");
return LocaleConvertCase(TO_STRING(this), locales, true);
}
%FunctionSetLength(ToLocaleUpperCaseI18N, 0);
%FunctionRemovePrototype(ToLowerCaseI18N);
%FunctionRemovePrototype(ToUpperCaseI18N);
%FunctionRemovePrototype(ToLocaleLowerCaseI18N);
%FunctionRemovePrototype(ToLocaleUpperCaseI18N);
utils.Export(function(to) {
to.ToLowerCaseI18N = ToLowerCaseI18N;
to.ToUpperCaseI18N = ToUpperCaseI18N;
to.ToLocaleLowerCaseI18N = ToLocaleLowerCaseI18N;
to.ToLocaleUpperCaseI18N = ToLocaleUpperCaseI18N;
});
/**
* Formats a Number object (this) using locale and options values.
* If locale or options are omitted, defaults are used.
*/
OverrideFunction(GlobalNumber.prototype, 'toLocaleString', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
if (!(this instanceof GlobalNumber) && typeof(this) !== 'number') {
throw %make_type_error(kMethodInvokedOnWrongType, "Number");
}
var locales = arguments[0];
var options = arguments[1];
var numberFormat = cachedOrNewService('numberformat', locales, options);
return formatNumber(numberFormat, this);
}
);
/**
* Returns actual formatted date or fails if date parameter is invalid.
*/
function toLocaleDateTime(date, locales, options, required, defaults, service) {
if (!(date instanceof GlobalDate)) {
throw %make_type_error(kMethodInvokedOnWrongType, "Date");
}
var dateValue = TO_NUMBER(date);
if (NUMBER_IS_NAN(dateValue)) return 'Invalid Date';
var internalOptions = toDateTimeOptions(options, required, defaults);
var dateFormat =
cachedOrNewService(service, locales, options, internalOptions);
return formatDate(dateFormat, date);
}
/**
* Formats a Date object (this) using locale and options values.
* If locale or options are omitted, defaults are used - both date and time are
* present in the output.
*/
OverrideFunction(GlobalDate.prototype, 'toLocaleString', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
var locales = arguments[0];
var options = arguments[1];
return toLocaleDateTime(
this, locales, options, 'any', 'all', 'dateformatall');
}
);
/**
* Formats a Date object (this) using locale and options values.
* If locale or options are omitted, defaults are used - only date is present
* in the output.
*/
OverrideFunction(GlobalDate.prototype, 'toLocaleDateString', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
var locales = arguments[0];
var options = arguments[1];
return toLocaleDateTime(
this, locales, options, 'date', 'date', 'dateformatdate');
}
);
/**
* Formats a Date object (this) using locale and options values.
* If locale or options are omitted, defaults are used - only time is present
* in the output.
*/
OverrideFunction(GlobalDate.prototype, 'toLocaleTimeString', function() {
if (!IS_UNDEFINED(new.target)) {
throw %make_type_error(kOrdinaryFunctionCalledAsConstructor);
}
var locales = arguments[0];
var options = arguments[1];
return toLocaleDateTime(
this, locales, options, 'time', 'time', 'dateformattime');
}
);
%FunctionRemovePrototype(FormatDateToParts);
utils.Export(function(to) {
to.FormatDateToParts = FormatDateToParts;
});
})