diff --git a/spec.html b/spec.html index b9c46f5..8b776f0 100644 --- a/spec.html +++ b/spec.html @@ -12,153 +12,126 @@

Locale Objects

The Intl.Locale Constructor

- The Locale constructor is a standard built-in property of the Intl object. Behaviour common to all service constructor properties of the Intl object is specified in . + The Locale constructor is a standard built-in property of the Intl object.

- - Supported options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
OptionExtension keyInternal slot
calendarca[[Calendar]]
collationco[[Collation]]
hourCyclehc[[HourCycle]]
caseFirstkf[[CaseFirst]]
numerickn[[Numeric]]
numberingSystemnu[[NumberingSystem]]
- - - -

ApplyOptionsToTag( tag, options )

+

ApplyOptionsToTag( _tag_, _options_ )

The following algorithm refers to RFC 5646's Language-Tag grammar.

- 1. Set _tag_ to ? ToString(_tag_). + 1. Assert: Type(_tag_) is String. 1. If IsStructurallyValidLanguageTag(_tag_) is *false*, throw a *RangeError* exception. - 1. If _tag_ matches the `langtag` production, - 1. Let _language_ be ? Get(_options_, `"language"`). - 1. If _language_ is not *undefined*, - 1. Set _language_ to ? ToString(_language_). + 1. If _tag_ matches the `langtag` production, then + 1. Let _language_ be ? GetOption(_options_, `"language"`, `"string"`, *undefined*, *undefined*). + 1. If _language_ is not *undefined*, then 1. If _language_ does not match the `language` production, throw a *RangeError* exception. 1. Set _tag_ to _tag_ with the substring corresponding to the `language` production replaced by the string _language_. - 1. Let _script_ be ? Get(_options_, `"script"`). - 1. If _script_ is not *undefined*, - 1. Set _script_ to ? ToString(_script_). + 1. Let _script_ be ? GetOption(_options_, `"script"`, `"string"`, *undefined*, *undefined*). + 1. If _script_ is not *undefined*, then 1. If _script_ does not match the `script` production, throw a *RangeError* exception. - 1. If _tag_ does not contain a `script` production, + 1. If _tag_ does not contain a `script` production, then 1. Set _tag_ to the concatenation of the `language` production of _tag_, `"-"`, _script_, and the rest of _tag_. 1. Else, - 1. Set _tag_ to _tag_ with the substring corresponding to the `region` production replaced by the string _language_. - 1. Let _region_ be ? Get(_options_, `"region"`). - 1. If _region_ is not *undefined*, - 1. Set _region_ to ? ToString(_region_). + 1. Set _tag_ to _tag_ with the substring corresponding to the `script` production replaced by the string _script_. + 1. Let _region_ be ? GetOption(_options_, `"region"`, `"string"`, *undefined*, *undefined*). + 1. If _region_ is not *undefined*, then 1. If _region_ does not match the `region` production, throw a *RangeError* exception. - 1. If _tag_ does not contain a `region` production, - 1. Set _tag_ to the concatenation of the `language` production of _tag_, the substring corresponding to the `"-" script` production if present, `"-"`, _script_, and the rest of _tag_. + 1. If _tag_ does not contain a `region` production, then + 1. Set _tag_ to the concatenation of the `language` production of _tag_, the substring corresponding to the `"-" script` production if present, `"-"`, _region_, and the rest of _tag_. 1. Else, - 1. Set _tag_ to _tag_ with the substring corresponding to the `region` production replaced by the string _language_. + 1. Set _tag_ to _tag_ with the substring corresponding to the `region` production replaced by the string _region_. 1. Return CanonicalizeLanguageTag(_tag_). - -

FindExtension ( _extension_, _key_ )

- -

The abstract operation FindExtension is called with _extension_, which must be a Unicode locale extension sequence, and String _key_. This operation returns start and end indices for the type subtags for _key_ by performing the following steps:

+ +

ApplyUnicodeExtensionToTag( _tag_, _options_, _relevantExtensionKeys_ )

+

+ The following algorithm refers to RFC 5646's Language-Tag grammar. +

- 1. Assert: The number of elements in _key_ is 2. + 1. Assert: Type(_tag_) is String. + 1. If _tag_ does not match the `langtag` production, then + 1. Let _result_ be a new Record. + 1. Repeat for each element _key_ of _relevantExtensionKeys_ in List order, + 1. Set result.[[<_key_>]] to *undefined*. + 1. Set _result_.[[locale]] to _tag_. + 1. Return _result_. + 1. If _tag_ contains a substring that is a Unicode locale extension sequence, then + 1. Let _extension_ be the String value consisting of the first substring of _tag_ that is a Unicode locale extension sequence. + 1. Else, + 1. Let _extension_ be the empty String. + 1. Let _keywords_ be the empty List. 1. Let _size_ be the number of elements in _extension_. - 1. Let _searchValue_ be the concatenation of `"-"`, _key_, and `"-"`. - 1. Let _pos_ be Call(%StringProto_indexOf%, _extension_, « _searchValue_ »). - 1. If _pos_ ≠ -1, then - 1. Let _start_ be _pos_ + 4. - 1. Let _end_ be _start_. - 1. Let _k_ be _start_. - 1. Let _done_ be *false*. - 1. Repeat, while _done_ is *false* - 1. Let _e_ be Call(%StringProto_indexOf%, _extension_, « `"-"`, _k_ »). - 1. If _e_ = -1, let _len_ be _size_ - _k_; else let _len_ be _e_ - _k_. - 1. If _len_ = 2, then - 1. Let _done_ be *true*. - 1. Else if _e_ = -1, then - 1. Let _end_ be _size_. - 1. Let _done_ be *true*. - 1. Else, - 1. Let _end_ be _e_. - 1. Let _k_ be _e_ + 1. - 1. Return a new Record { [[Start]]: _pos_, [[End]]: _end_ }. - 1. Let _searchValue_ be the concatenation of `"-"` and _key_. - 1. Let _pos_ be Call(%StringProto_indexOf%, _extension_, « _searchValue_ »). - 1. If _pos_ ≠ -1 and _pos_ + 3 = _size_, then - 1. Return a new Record { [[Start]]: _pos_, [[End]]: _size_ }. - 1. Return *undefined*. - - - - -

UnicodeExtensionValue ( _extension_, _key_ )

- -

The abstract operation UnicodeExtensionValue is called with _extension_, which must be a Unicode locale extension sequence, and String _key_. This operation returns the type subtags for _key_ by performing the following steps:

- - - 1. Let _range_ be FindExtension(_extension_, _key_). - 1. If _range_ is *undefined*, return *undefined*. - 1. If _range_.[[Start]] + 4 ≥ _range_.[[End]], return an empty String. - 1. Otherwise, return a String value equal to the substring of _extension_ from _range_.[[Start]] + 4 (inclusive) to _range_.[[End]] (exclusive). - - - - -

UnusedExtensions ( r )

- - 1. Let _extension_ be _r_.[[extension]]. - 1. For _key_ in %Locale%.[[RelevantExtensionKeys]], - 1. Let _done_ be *false*. - 1. Repeat, while _done_ is *false*, - 1. Let _range_ be FindExtension(_extension_, _key_). - 1. If _range_ is *undefined*, set _done_ to *true*. - 1. Otherwise, set _extension_ to the concatenation of the substring of _extension_ from the beginning to _range_.[[Start]] with the substring of _extension_ from _range_.[[End]] to the end of the string. - 1. If _extension_ begins with `"-u-"`, set _extension_ to the substring of _extension_ beginning from its fourth index. - 1. Return _extension_. + 1. Let _key_ be `"attributes"`. + 1. Let _value_ be the empty String. + 1. Let _k_ be 3. + 1. Repeat, while _k_ < _size_ + 1. Let _e_ be ! Call(%StringProto_indexOf%, _extension_, « `"-"`, _k_ »). + 1. If _e_ = -1, let _len_ be _size_ - _k_; else let _len_ be _e_ - _k_. + 1. Let _subtag_ the String value equal to the substring of _extension_ consisting of the code units at indices _k_ (inclusive) through _k_ + _len_ (exclusive). + 1. If _len_ = 2, then + 1. If _keywords_ does not contain an element whose [[Key]] is the same as _key_, then + 1. Append the Record{[[Key]]: _key_, [[Value]]: _value_} to _keywords_. + 1. Let _key_ be _subtag_. + 1. Let _value_ be the empty String. + 1. Else, + 1. If _value_ is not the empty String, then + 1. Let _value_ be the string-concatenation of _value_ and `"-"`. + 1. Let _value_ be the string-concatenation of _value_ and _subtag_. + 1. Let _k_ be _k_ + _len_ + 1. + 1. If _keywords_ does not contain an element whose [[Key]] is the same as _key_, then + 1. Append the Record{[[Key]]: _key_, [[Value]]: _value_} to _keywords_. + 1. Let _result_ be a new Record. + 1. Let _newExtension_ be `"-u"`. + 1. Let _entry_ be the element of _keywords_ whose [[Key]] is the same as `"attributes"`. + 1. If _entry_.[[Value]] is not the empty String, then + 1. Let _newExtension_ be the string-concatenation of _newExtension_, `"-"`, and _entry_.[[Value]]. + 1. Remove _entry_ from _keywords_. + 1. Repeat for each element _key_ of _relevantExtensionKeys_ in List order, + 1. Let _value_ be *undefined*. + 1. If _keywords_ contains an element whose [[Key]] is the same as _key_, then + 1. Let _entry_ be the element of _keywords_ whose [[Key]] is the same as _key_. + 1. Let _value_ be _entry_.[[Value]]. + 1. Remove _entry_ from _keywords_. + 1. Assert: _options_ has a field [[<_key_>]]. + 1. Let _optionsValue_ be _options_.[[<_key_>]]. + 1. If _optionsValue_ is not *undefined*, then + 1. Let _value_ be _optionsValue_. + 1. Set _result_.[[<_key_>]] to _value_. + 1. If _value_ is not *undefined*, then + 1. Assert: Type(_value_) is String. + 1. Let _newExtension_ be the string-concatenation of _newExtension_, `"-"`, and _key_. + 1. If _value_ is not the empty String, then + 1. Let _newExtension_ be the string-concatenation of _newExtension_, `"-"`, and _value_. + 1. Repeat for each element _entry_ of _keywords_ in List order, + 1. Let _key_ be _entry_.[[Key]]. + 1. Let _value_ be _entry_.[[Value]]. + 1. Let _newExtension_ be the string-concatenation of _newExtension_, `"-"`, and _key_. + 1. If _value_ is not the empty String, then + 1. Let _newExtension_ be the string-concatenation of _newExtension_, `"-"`, and _value_. + 1. Let _locale_ be the String value that is _tag_ with all Unicode locale extension sequences removed. + 1. If the number of elements in _newExtension_ is greater than 2, then + 1. Let _privateIndex_ be ! Call(%StringProto_indexOf%, _locale_, « `"-x-"` »). + 1. If _privateIndex_ = -1, then + 1. Let _locale_ be the concatenation of _locale_ and _newExtension_. + 1. Else, + 1. Let _preExtension_ be the substring of _locale_ from position 0, inclusive, to position _privateIndex_, exclusive. + 1. Let _postExtension_ be the substring of _locale_ from position _privateIndex_ to the end of the string. + 1. Let _locale_ be the string-concatenation of _preExtension_, _newExtension_, and _postExtension_. + 1. Assert: ! IsStructurallyValidLanguageTag(_locale_) is *true*. + 1. Let _locale_ be ! CanonicalizeLanguageTag(_locale_). + 1. Set _result_.[[locale]] to _locale_. + 1. Return _result_. -

Intl.Locale( tag[, options] )

+

Intl.Locale( _tag_ [, _options_] )

When the *Intl.Locale* function is called with an argument _tag_ and an optional argument _options_, the following steps are taken: @@ -166,40 +139,47 @@

Intl.Locale( tag[, options] )

1. If NewTarget is *undefined*, throw a *TypeError* exception. - 1. Let _locale_ be ? OrdinaryCreateFromConstructor(NewTarget, *%LocalePrototype%*, « [[InitializedLocale]], [[Locale]], [[Calendar]], [[Collation]], [[HourCycle]], [[CaseFirst]], [[Numeric]], [[NumberingSystem]], [[OtherExtensions]] »). - 1. Set _tag_ to ApplyOptionsToTag(_tag_). - 1. Let _requestedLocales_ be ? CreateArrayFromList(« _tag_ »). + 1. Let _relevantExtensionKeys_ be %Locale%.[[RelevantExtensionKeys]]. + 1. Let _internalSlotsList_ be « [[InitializedLocale]], [[Locale]], [[Calendar]], [[Collation]], [[HourCycle]], [[NumberingSystem]] ». + 1. If _relevantExtensionKeys_ contains `"kf"`, then + 1. Append [[CaseFirst]] as the last element of _internalSlotsList_. + 1. If _relevantExtensionKeys_ contains `"kn"`, then + 1. Append [[Numeric]] as the last element of _internalSlotsList_. + 1. Let _locale_ be ? OrdinaryCreateFromConstructor(NewTarget, *%LocalePrototype%*, _internalSlotsList_). + 1. If Type(_tag_) is not String or Object, throw a *TypeError* exception. + 1. If Type(_tag_) is Object and _tag_ has an [[InitializedLocale]] internal slot, then + 1. Let _tag_ be _tag_.[[Locale]]. + 1. Else, + 1. Let _tag_ be ? ToString(_tag_). 1. If _options_ is *undefined*, then - 1. Let _options_ be ObjectCreate(*null*). + 1. Let _options_ be ! ObjectCreate(*null*). 1. Else 1. Let _options_ be ? ToObject(_options_). - 1. Set _opt_.[[localeMatcher]] to `"best fit"`. - 1. Let _calendar_ be ? Get(_options_, `"calendar"`). - 1. If _calendar_ is not *undefined*, set _calendar_ to ? ToString(_calendar_). + 1. Set _tag_ to ? ApplyOptionsToTag(_tag_, _options_). + 1. Let _opt_ be a new Record. + 1. Let _calendar_ be ? GetOption(_options_, `"calendar"`, `"string"`, *undefined*, *undefined*). 1. Set _opt_.[[ca]] to _calendar_. - 1. Let _collation_ be ? Get(_options_, `"collation"`). - 1. If _collation_ is not *undefined*, set _collation_ to ? ToString(_collation_). + 1. Let _collation_ be ? GetOption(_options_, `"collation"`, `"string"`, *undefined*, *undefined*). 1. Set _opt_.[[co]] to _collation_. 1. Let _hc_ be ? GetOption(_options_, `"hourCycle"`, `"string"`, « `"h11"`, `"h12"`, `"h23"`, `"h24"` », *undefined*). 1. Set _opt_.[[hc]] to _hc_. 1. Let _kf_ be ? GetOption(_options_, `"caseFirst"`, `"string"`, « `"upper"`, `"lower"`, `"false"` », *undefined*). 1. Set _opt_.[[kf]] to _kf_. 1. Let _kn_ be ? GetOption(_options_, `"numeric"`, `"boolean"`, *undefined*, *undefined*). - 1. If _kn_ is not *undefined*, set _kn_ to ? ToString(_kn_). + 1. If _kn_ is not *undefined*, set _kn_ to ! ToString(_kn_). 1. Set _opt_.[[kn]] to _kn_. - 1. Let _numberingSystem_ be ? Get(_options_, `"numberingSystem"`). - 1. If _numberingSystem_ is not *undefined*, set _numberingSystem_ to ? ToString(_numeringSystem_). + 1. Let _numberingSystem_ be ? GetOption(_options_, `"numberingSystem"`, `"string"`, *undefined*, *undefined*). 1. Set _opt_.[[nu]] to _numeringSystem_. - 1. Let _localeData_ be %Locale%.[[LocaleData]]. - 1. Let _r_ be ResolveLocale( %Locale%.[[AvailableLocales]], _requestedLocales_, _opt_, %Locale%.[[RelevantExtensionKeys]], _localeData_). + 1. Let _r_ be ! ApplyUnicodeExtensionToTag(_tag_, _opt_, _relevantExtensionKeys_). 1. Set _locale_.[[Locale]] to _r_.[[locale]]. 1. Set _locale_.[[Calendar]] to _r_.[[ca]]. 1. Set _locale_.[[Collation]] to _r_.[[co]]. 1. Set _locale_.[[HourCycle]] to _r_.[[hc]]. - 1. Set _locale_.[[CaseFirst]] to _r_.[[kf]]. - 1. Set _locale_.[[Numeric]] to _r_.[[kn]]. + 1. If _relevantExtensionKeys_ contains `"kf"`, then + 1. Set _locale_.[[CaseFirst]] to _r_.[[kf]]. + 1. If _relevantExtensionKeys_ contains `"kn"`, then + 1. Set _locale_.[[Numeric]] to _r_.[[kn]]. 1. Set _locale_.[[NumberingSystem]] to _r_.[[nu]]. - 1. Set _locale_.[[OtherExtensions]] to UnusedExtensions(_r_). 1. Set _locale_.[[InitializedLocale]] to *true*. 1. Return _locale_. @@ -228,39 +208,8 @@

Intl.Locale.prototype

Internal slots

- The value of the [[AvailableLocales]] internal slot is the List of all two- or three-character strings with code points in the range `"a"` through `"z"`. This will contain at least the union of %DateTimeFormat%.[[AvailableLocales]], %NumberFormat%.[[AvailableLocales]] and %Collator%.[[AvailableLocales]]. -

- -

- The value of the [[RelevantExtensionKeys]] internal slot is « `"ca"`, `"co"`, `"hc"`, `"kf"`, `"kn"`, `"nu"` ». - %Collator%.[[RelevantExtensionKeys]] contains `"kf"`, then %Locale%.[[RelevantExtensionKeys]] includes `"kf"`. - %Collator%.[[RelevantExtensionKeys]] contains `"kn"`, then %Locale%.[[RelevantExtensionKeys]] includes `"kn"`. + The value of the [[RelevantExtensionKeys]] internal slot is « `"ca"`, `"co"`, `"hc"`, `"kf"`, `"kn"`, `"nu"` ». If %Collator%.[[RelevantExtensionKeys]] does not contain `"kf"`, then remove `"kf"` from %Locale%.[[RelevantExtensionKeys]]. If %Collator%.[[RelevantExtensionKeys]] does not contain `"kn"`, then remove `"kn"` from %Locale%.[[RelevantExtensionKeys]].

- -

- The value of the [[LocaleData]] internal slot is implementation defined within the constraints described in and the following additional constraints: -

- - @@ -268,10 +217,7 @@

Internal slots

Properties of the Intl.Locale Prototype Object

- The Intl.Locale prototype object is itself an Intl.Locale instance as specified in , whose internal slots are set as if it had been constructed by the expression Construct(*%Locale%*). -

-

- In the following descriptions of functions that are properties or [[Get]] attributes of properties of *%LocalePrototype%*, the phrase "this Locale object" refers to the object that is the this value for the invocation of the function; a *TypeError* exception is thrown if the this value is not an object or an object. + The Intl.Locale prototype object is itself an ordinary object. %LocalePrototype% is not an Intl.Locale instance and does not have an [[InitializedLocale]] internal slot or any of the other internal slots of Intl.Locale instance objects.

@@ -294,37 +240,14 @@

Intl.Locale.prototype[ @@toStringTag ]

 - -

LocaleToString ( loc )

- - - 1. Assert: _loc_ has an [[InitializedLocale]] internal slot. - 1. Let _locale_ be _loc_.[[Locale]]. - 1. Let _extension_ be an empty String. - 1. For each row in , except the header row, in table order, do: - 1. Let _name_ be the name given in the Option column of the row. - 1. Let _slot_ be the Internal Slot column of the row. - 1. Let _value_ be _locale_.[[<_slot_>]]. - 1. If _value_ is not *undefined*, - 1. Let _kvp_ be a String value produced by concatenating `"-"`, _key_, `"-"`, and ! ToString(_value_). - 1. Set _extension_ to a String value produced by concatenating _extension_ and _kvp_. - 1. Set _extension_ to a String value produced by concatenating _extension_ and _loc_.[[OtherExtensions]]. - 1. If _extension_ is not empty, then, - 1. If _extension_ does not have `"-"` as its third character, let _extension_ be the concatenation of `"-u"` and _extension_. - 1. Let _result_ be a String value produced by concatenating _locale_ and _extension_. - 1. Return _result_. - 1. Else, - 1. Return _locale_. - - -

Intl.Locale.prototype.toString ()

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) is not Object, or _loc_ does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. - 1. Return LocaleToString(_loc_). + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. + 1. Return _loc_.[[Locale]]. @@ -333,7 +256,8 @@

get Intl.Locale.prototype.calendar

`Intl.Locale.prototype.calendar` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[Calendar]]. @@ -343,7 +267,8 @@

get Intl.Locale.prototype.collation

`Intl.Locale.prototype.collation` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[Collation]]. @@ -353,18 +278,20 @@

get Intl.Locale.prototype.hourCycle

`Intl.Locale.prototype.hourCycle` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[HourCycle]].

get Intl.Locale.prototype.caseFirst

-

This property only exists if %Collator%.[[RelevantExtensionKeys]] contains `"kf"`.

+

This property only exists if %Locale%.[[RelevantExtensionKeys]] contains `"kf"`.

`Intl.Locale.prototype.caseFirst` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[CaseFirst]]. @@ -375,7 +302,8 @@

get Intl.Locale.prototype.numeric

`Intl.Locale.prototype.numeric` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[Numeric]]. @@ -385,7 +313,8 @@

get Intl.Locale.prototype.numberingSystem

`Intl.Locale.prototype.numberingSystem` is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Return _loc_.[[NumberingSystem]]. @@ -395,7 +324,8 @@

get Intl.Locale.prototype.language

`Intl.Locale.prototype.language` is an accessor property whose set accessor function is *undefined*. The following algorithm refers to RFC 5646's Language-Tag grammar. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Let _locale_ be _loc_.[[Locale]]. 1. If _locale_ does not match the `langtag` production, return *undefined*. 1. Return the substring of _locale_ corresponding to the `language` production. @@ -407,10 +337,11 @@

get Intl.Locale.prototype.script

`Intl.Locale.prototype.script` is an accessor property whose set accessor function is *undefined*. The following algorithm refers to RFC 5646's Language-Tag grammar. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Let _locale_ be _loc_.[[Locale]]. 1. If _locale_ does not match the `langtag` production, return *undefined*. - 1. If _locale_ contains a no repetitions of the `["-" script]` sequence, return *undefined*. + 1. If _locale_ does not contain the `["-" script]` sequence, return *undefined*. 1. Return the substring of _locale_ corresponding to the `script` production. @@ -420,10 +351,11 @@

get Intl.Locale.prototype.region

`Intl.Locale.prototype.region` is an accessor property whose set accessor function is *undefined*. The following algorithm refers to RFC 5646's Language-Tag grammar. Its get accessor function performs the following steps:

1. Let _loc_ be the *this* value. - 1. If Type(_loc_) does not have an [[InitializedLocale]] internal slot, throw a *TypeError* exception. + 1. If Type(_loc_) is not Object or _loc_ does not have an [[InitializedLocale]] internal slot, then + 1. Throw a *TypeError* exception. 1. Let _locale_ be _loc_.[[Locale]]. 1. If _locale_ does not match the `langtag` production, return *undefined*. - 1. If _locale_ contains a no repetitions of the `["-" region]` sequence, return *undefined*. + 1. If _locale_ does not contain the `["-" region]` sequence, return *undefined*. 1. Return the substring of _locale_ corresponding to the `region` production. @@ -456,9 +388,9 @@

CanonicalizeLocaleList ( _locales_ )

1. If _kPresent_ is *true*, then 1. Let _kValue_ be ? Get(_O_, _Pk_). 1. If Type(_kValue_) is not String or Object, throw a *TypeError* exception. - 1. If Type(_kValue_) is Object and _kValue_ has an [[InitializedLocale]] internal slot, - 1. Let _tag_ be LocaleToString(_kValue_). - 1. Otherwise, + 1. If Type(_kValue_) is Object and _kValue_ has an [[InitializedLocale]] internal slot, then + 1. Let _tag_ be _kValue_.[[Locale]]. + 1. Else, 1. Let _tag_ be ? ToString(_kValue_). 1. If IsStructurallyValidLanguageTag(_tag_) is *false*, throw a *RangeError* exception. 1. Let _canonicalizedTag_ be CanonicalizeLanguageTag(_tag_).