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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // ECMAScript 402 API implementation. | 5 // ECMAScript 402 API implementation. |
6 | 6 |
7 /** | 7 /** |
8 * Intl object is a single object that has some named properties, | 8 * Intl object is a single object that has some named properties, |
9 * all of which are constructors. | 9 * all of which are constructors. |
10 */ | 10 */ |
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137 'numberformat': UNDEFINED, | 137 'numberformat': UNDEFINED, |
138 'dateformat': UNDEFINED, | 138 'dateformat': UNDEFINED, |
139 'breakiterator': UNDEFINED | 139 'breakiterator': UNDEFINED |
140 }; | 140 }; |
141 | 141 |
142 /** | 142 /** |
143 * Caches default ICU locale. | 143 * Caches default ICU locale. |
144 */ | 144 */ |
145 var DEFAULT_ICU_LOCALE = UNDEFINED; | 145 var DEFAULT_ICU_LOCALE = UNDEFINED; |
146 | 146 |
147 function GetDefaultICULocaleJS() { | |
148 if (IS_UNDEFINED(DEFAULT_ICU_LOCALE)) { | |
149 DEFAULT_ICU_LOCALE = %GetDefaultICULocale(); | |
150 } | |
151 return DEFAULT_ICU_LOCALE; | |
152 } | |
153 | |
147 /** | 154 /** |
148 * Unicode extension regular expression. | 155 * Unicode extension regular expression. |
149 */ | 156 */ |
150 var UNICODE_EXTENSION_RE = UNDEFINED; | 157 var UNICODE_EXTENSION_RE = UNDEFINED; |
151 | 158 |
152 function GetUnicodeExtensionRE() { | 159 function GetUnicodeExtensionRE() { |
153 if (IS_UNDEFINED(UNDEFINED)) { | 160 if (IS_UNDEFINED(UNDEFINED)) { |
154 UNICODE_EXTENSION_RE = new GlobalRegExp('-u(-[a-z0-9]{2,8})+', 'g'); | 161 UNICODE_EXTENSION_RE = new GlobalRegExp('-u(-[a-z0-9]{2,8})+', 'g'); |
155 } | 162 } |
156 return UNICODE_EXTENSION_RE; | 163 return UNICODE_EXTENSION_RE; |
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441 // Truncate locale if possible. | 448 // Truncate locale if possible. |
442 var pos = %_Call(StringLastIndexOf, locale, '-'); | 449 var pos = %_Call(StringLastIndexOf, locale, '-'); |
443 if (pos === -1) { | 450 if (pos === -1) { |
444 break; | 451 break; |
445 } | 452 } |
446 locale = %_Call(StringSubstring, locale, 0, pos); | 453 locale = %_Call(StringSubstring, locale, 0, pos); |
447 } while (true); | 454 } while (true); |
448 } | 455 } |
449 | 456 |
450 // Didn't find a match, return default. | 457 // Didn't find a match, return default. |
451 if (IS_UNDEFINED(DEFAULT_ICU_LOCALE)) { | 458 return {'locale': GetDefaultICULocaleJS(), 'extension': '', 'position': -1}; |
452 DEFAULT_ICU_LOCALE = %GetDefaultICULocale(); | |
453 } | |
454 | |
455 return {'locale': DEFAULT_ICU_LOCALE, 'extension': '', 'position': -1}; | |
456 } | 459 } |
457 | 460 |
458 | 461 |
459 /** | 462 /** |
460 * Returns best matched supported locale and extension info using | 463 * Returns best matched supported locale and extension info using |
461 * implementation dependend algorithm. | 464 * implementation dependend algorithm. |
462 */ | 465 */ |
463 function bestFitMatcher(service, requestedLocales) { | 466 function bestFitMatcher(service, requestedLocales) { |
464 // TODO(cira): implement better best fit algorithm. | 467 // TODO(cira): implement better best fit algorithm. |
465 return lookupMatcher(service, requestedLocales); | 468 return lookupMatcher(service, requestedLocales); |
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715 } | 718 } |
716 } | 719 } |
717 return result; | 720 return result; |
718 } | 721 } |
719 | 722 |
720 /** | 723 /** |
721 * Canonicalizes the language tag, or throws in case the tag is invalid. | 724 * Canonicalizes the language tag, or throws in case the tag is invalid. |
722 */ | 725 */ |
723 function canonicalizeLanguageTag(localeID) { | 726 function canonicalizeLanguageTag(localeID) { |
724 // null is typeof 'object' so we have to do extra check. | 727 // null is typeof 'object' so we have to do extra check. |
725 if (typeof localeID !== 'string' && typeof localeID !== 'object' || | 728 if ((typeof localeID !== 'string' && typeof localeID !== 'object') || |
726 IS_NULL(localeID)) { | 729 IS_NULL(localeID)) { |
727 throw MakeTypeError(kLanguageID); | 730 throw MakeTypeError(kLanguageID); |
728 } | 731 } |
729 | 732 |
733 // Optimize for the most common case; a language code alone in | |
734 // the canonical form/lowercase (e.g. "en", "fil"). | |
735 if (typeof localeID === 'string' && | |
736 !IS_NULL(InternalRegExpMatch(/^[a-z]{2,3}$/, localeID))) | |
737 return localeID; | |
738 | |
730 var localeString = GlobalString(localeID); | 739 var localeString = GlobalString(localeID); |
731 | 740 |
732 if (isValidLanguageTag(localeString) === false) { | 741 if (isValidLanguageTag(localeString) === false) { |
733 throw MakeRangeError(kInvalidLanguageTag, localeString); | 742 throw MakeRangeError(kInvalidLanguageTag, localeString); |
734 } | 743 } |
735 | 744 |
736 // This call will strip -kn but not -kn-true extensions. | |
737 // ICU bug filled - http://bugs.icu-project.org/trac/ticket/9265. | |
738 // TODO(cira): check if -u-kn-true-kc-true-kh-true still throws after | |
739 // upgrade to ICU 4.9. | |
740 var tag = %CanonicalizeLanguageTag(localeString); | 745 var tag = %CanonicalizeLanguageTag(localeString); |
741 if (tag === 'invalid-tag') { | 746 if (tag === 'invalid-tag') { |
742 throw MakeRangeError(kInvalidLanguageTag, localeString); | 747 throw MakeRangeError(kInvalidLanguageTag, localeString); |
743 } | 748 } |
744 | 749 |
745 return tag; | 750 return tag; |
746 } | 751 } |
747 | 752 |
748 | 753 |
749 /** | 754 /** |
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1985 var useOptions = (IS_UNDEFINED(defaults)) ? options : defaults; | 1990 var useOptions = (IS_UNDEFINED(defaults)) ? options : defaults; |
1986 if (IS_UNDEFINED(locales) && IS_UNDEFINED(options)) { | 1991 if (IS_UNDEFINED(locales) && IS_UNDEFINED(options)) { |
1987 if (IS_UNDEFINED(defaultObjects[service])) { | 1992 if (IS_UNDEFINED(defaultObjects[service])) { |
1988 defaultObjects[service] = new savedObjects[service](locales, useOptions); | 1993 defaultObjects[service] = new savedObjects[service](locales, useOptions); |
1989 } | 1994 } |
1990 return defaultObjects[service]; | 1995 return defaultObjects[service]; |
1991 } | 1996 } |
1992 return new savedObjects[service](locales, useOptions); | 1997 return new savedObjects[service](locales, useOptions); |
1993 } | 1998 } |
1994 | 1999 |
2000 function getCaseConversionLanguageId(locales) { | |
2001 var language; | |
2002 // Optimize for the most common two cases. initializeLocaleList() can handle | |
2003 // them as well, but it's rather slow accounting for over 60% of | |
2004 // toLocale{U,L}Case() and about 40% of toLocale{U,L}Case("<locale>"). | |
2005 if (IS_UNDEFINED(locales)) { | |
2006 language = GetDefaultICULocaleJS(); | |
2007 } else if (typeof locales === 'string') { | |
2008 language = canonicalizeLanguageTag(locales); | |
2009 } else { | |
2010 var locales = initializeLocaleList(locales); | |
2011 language = locales.length > 0 ? locales[0] : GetDefaultICULocaleJS(); | |
2012 } | |
2013 | |
2014 // StringSplit is slwoer than this. | |
2015 var pos = %_Call(StringIndexOf, language, '-'); | |
2016 if (pos != -1) | |
2017 language = %_Call(StringSubstring, language, 0, pos); | |
2018 | |
2019 var CUSTOM_CASE_LANGUAGES = ['az', 'el', 'lt', 'tr']; | |
2020 return %_Call(ArrayIndexOf, CUSTOM_CASE_LANGUAGES, language); | |
2021 } | |
2022 | |
2023 function localeConvertCase(s, locales, isToUpper) { | |
2024 var caseConversionLanguageId = getCaseConversionLanguageId(locales); | |
2025 if (caseConversionLanguageId == -1) | |
2026 return isToUpper ? %StringToUpperCaseI18N(s) : %StringToLowerCaseI18N(s); | |
2027 return %StringLocaleConvertCase(s, isToUpper, caseConversionLanguageId); | |
2028 } | |
2029 | |
1995 /** | 2030 /** |
1996 * Compares this and that, and returns less than 0, 0 or greater than 0 value. | 2031 * Compares this and that, and returns less than 0, 0 or greater than 0 value. |
1997 * Overrides the built-in method. | 2032 * Overrides the built-in method. |
1998 */ | 2033 */ |
1999 OverrideFunction(GlobalString.prototype, 'localeCompare', function(that) { | 2034 OverrideFunction(GlobalString.prototype, 'localeCompare', function(that) { |
2000 if (!IS_UNDEFINED(new.target)) { | 2035 if (!IS_UNDEFINED(new.target)) { |
2001 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | 2036 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); |
2002 } | 2037 } |
2003 | 2038 |
2004 if (IS_NULL_OR_UNDEFINED(this)) { | 2039 if (IS_NULL_OR_UNDEFINED(this)) { |
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2037 var normalizationForm = %_Call(ArrayIndexOf, NORMALIZATION_FORMS, form); | 2072 var normalizationForm = %_Call(ArrayIndexOf, NORMALIZATION_FORMS, form); |
2038 if (normalizationForm === -1) { | 2073 if (normalizationForm === -1) { |
2039 throw MakeRangeError(kNormalizationForm, | 2074 throw MakeRangeError(kNormalizationForm, |
2040 %_Call(ArrayJoin, NORMALIZATION_FORMS, ', ')); | 2075 %_Call(ArrayJoin, NORMALIZATION_FORMS, ', ')); |
2041 } | 2076 } |
2042 | 2077 |
2043 return %StringNormalize(s, normalizationForm); | 2078 return %StringNormalize(s, normalizationForm); |
2044 } | 2079 } |
2045 ); | 2080 ); |
2046 | 2081 |
2082 OverrideFunction(GlobalString.prototype, 'toLowerCase', function() { | |
jungshik at Google
2016/04/15 09:51:30
Dan, can you give me a pointer to the way a 'flag'
| |
2083 if (!IS_UNDEFINED(new.target)) { | |
2084 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | |
2085 } | |
2086 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLowerCase"); | |
2087 var s = TO_STRING(this); | |
2088 return %StringToLowerCaseI18N(s); | |
2089 } | |
2090 ); | |
2091 | |
2092 OverrideFunction(GlobalString.prototype, 'toUpperCase', function() { | |
2093 if (!IS_UNDEFINED(new.target)) { | |
2094 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | |
2095 } | |
2096 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLowerCase"); | |
2097 var s = TO_STRING(this); | |
2098 return %StringToUpperCaseI18N(s); | |
2099 } | |
2100 ); | |
2101 | |
2102 OverrideFunction(GlobalString.prototype, 'toLocaleLowerCase', function() { | |
2103 if (!IS_UNDEFINED(new.target)) { | |
2104 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | |
2105 } | |
2106 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLocaleLowerCase"); | |
2107 return localeConvertCase(TO_STRING(this), arguments[0], false); | |
2108 } | |
2109 ); | |
2110 | |
2111 | |
2112 OverrideFunction(GlobalString.prototype, 'toLocaleUpperCase', function() { | |
2113 if (!IS_UNDEFINED(new.target)) { | |
2114 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | |
2115 } | |
2116 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLocaleUpperCase"); | |
2117 return localeConvertCase(TO_STRING(this), arguments[0], true); | |
2118 } | |
2119 ); | |
2120 | |
2047 | 2121 |
2048 /** | 2122 /** |
2049 * Formats a Number object (this) using locale and options values. | 2123 * Formats a Number object (this) using locale and options values. |
2050 * If locale or options are omitted, defaults are used. | 2124 * If locale or options are omitted, defaults are used. |
2051 */ | 2125 */ |
2052 OverrideFunction(GlobalNumber.prototype, 'toLocaleString', function() { | 2126 OverrideFunction(GlobalNumber.prototype, 'toLocaleString', function() { |
2053 if (!IS_UNDEFINED(new.target)) { | 2127 if (!IS_UNDEFINED(new.target)) { |
2054 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); | 2128 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); |
2055 } | 2129 } |
2056 | 2130 |
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2132 } | 2206 } |
2133 | 2207 |
2134 var locales = arguments[0]; | 2208 var locales = arguments[0]; |
2135 var options = arguments[1]; | 2209 var options = arguments[1]; |
2136 return toLocaleDateTime( | 2210 return toLocaleDateTime( |
2137 this, locales, options, 'time', 'time', 'dateformattime'); | 2211 this, locales, options, 'time', 'time', 'dateformattime'); |
2138 } | 2212 } |
2139 ); | 2213 ); |
2140 | 2214 |
2141 }) | 2215 }) |
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