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1 // Copyright 2013 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 // limitations under the License. | |
28 | |
29 // ECMAScript 402 API implementation is broken into separate files for | |
30 // each service. The build system combines them together into one | |
31 // Intl namespace. | |
32 | |
33 /** | |
34 * Initializes the given object so it's a valid Collator instance. | |
35 * Useful for subclassing. | |
36 */ | |
37 function initializeCollator(collator, locales, options) { | |
38 if (collator.hasOwnProperty('__initializedIntlObject')) { | |
39 throw new TypeError('Trying to re-initialize Collator object.'); | |
40 } | |
41 | |
42 if (options === undefined) { | |
43 options = {}; | |
44 } | |
45 | |
46 var getOption = getGetOption(options, 'collator'); | |
47 | |
48 var internalOptions = {}; | |
49 | |
50 defineWEProperty(internalOptions, 'usage', getOption( | |
51 'usage', 'string', ['sort', 'search'], 'sort')); | |
52 | |
53 var sensitivity = getOption('sensitivity', 'string', | |
54 ['base', 'accent', 'case', 'variant']); | |
55 if (sensitivity === undefined && internalOptions.usage === 'sort') { | |
56 sensitivity = 'variant'; | |
57 } | |
58 defineWEProperty(internalOptions, 'sensitivity', sensitivity); | |
59 | |
60 defineWEProperty(internalOptions, 'ignorePunctuation', getOption( | |
61 'ignorePunctuation', 'boolean', undefined, false)); | |
62 | |
63 var locale = resolveLocale('collator', locales, options); | |
64 | |
65 // ICU can't take kb, kc... parameters through localeID, so we need to pass | |
66 // them as options. | |
67 // One exception is -co- which has to be part of the extension, but only for | |
68 // usage: sort, and its value can't be 'standard' or 'search'. | |
69 var extensionMap = parseExtension(locale.extension); | |
70 setOptions( | |
71 options, extensionMap, COLLATOR_KEY_MAP, getOption, internalOptions); | |
72 | |
73 var collation = 'default'; | |
74 var extension = ''; | |
75 if (extensionMap.hasOwnProperty('co') && internalOptions.usage === 'sort') { | |
76 if (ALLOWED_CO_VALUES.indexOf(extensionMap.co) !== -1) { | |
77 extension = '-u-co-' + extensionMap.co; | |
78 // ICU can't tell us what the collation is, so save user's input. | |
79 collation = extensionMap.co; | |
80 } | |
81 } else if (internalOptions.usage === 'search') { | |
82 extension = '-u-co-search'; | |
83 } | |
84 defineWEProperty(internalOptions, 'collation', collation); | |
85 | |
86 var requestedLocale = locale.locale + extension; | |
87 | |
88 // We define all properties C++ code may produce, to prevent security | |
89 // problems. If malicious user decides to redefine Object.prototype.locale | |
90 // we can't just use plain x.locale = 'us' or in C++ Set("locale", "us"). | |
91 // Object.defineProperties will either succeed defining or throw an error. | |
92 var resolved = Object.defineProperties({}, { | |
93 caseFirst: {writable: true}, | |
94 collation: {value: internalOptions.collation, writable: true}, | |
95 ignorePunctuation: {writable: true}, | |
96 locale: {writable: true}, | |
97 numeric: {writable: true}, | |
98 requestedLocale: {value: requestedLocale, writable: true}, | |
99 sensitivity: {writable: true}, | |
100 strength: {writable: true}, | |
101 usage: {value: internalOptions.usage, writable: true} | |
102 }); | |
103 | |
104 var internalCollator = %CreateCollator(requestedLocale, | |
105 internalOptions, | |
106 resolved); | |
107 | |
108 // Writable, configurable and enumerable are set to false by default. | |
109 Object.defineProperty(collator, 'collator', {value: internalCollator}); | |
110 Object.defineProperty(collator, '__initializedIntlObject', | |
111 {value: 'collator'}); | |
112 Object.defineProperty(collator, 'resolved', {value: resolved}); | |
113 | |
114 return collator; | |
115 } | |
116 | |
117 | |
118 /** | |
119 * Constructs Intl.Collator object given optional locales and options | |
120 * parameters. | |
121 * | |
122 * @constructor | |
123 */ | |
124 %SetProperty(Intl, 'Collator', function() { | |
125 var locales = arguments[0]; | |
126 var options = arguments[1]; | |
127 | |
128 if (!this || this === Intl) { | |
129 // Constructor is called as a function. | |
130 return new Intl.Collator(locales, options); | |
131 } | |
132 | |
133 return initializeCollator(toObject(this), locales, options); | |
134 }, | |
135 ATTRIBUTES.DONT_ENUM | |
136 ); | |
137 | |
138 | |
139 /** | |
140 * Collator resolvedOptions method. | |
141 */ | |
142 %SetProperty(Intl.Collator.prototype, 'resolvedOptions', function() { | |
143 if (%_IsConstructCall()) { | |
144 throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR); | |
145 } | |
146 | |
147 if (!this || typeof this !== 'object' || | |
148 this.__initializedIntlObject !== 'collator') { | |
149 throw new TypeError('resolvedOptions method called on a non-object ' + | |
150 'or on a object that is not Intl.Collator.'); | |
151 } | |
152 | |
153 var coll = this; | |
154 var locale = getOptimalLanguageTag(coll.resolved.requestedLocale, | |
155 coll.resolved.locale); | |
156 | |
157 return { | |
158 locale: locale, | |
159 usage: coll.resolved.usage, | |
160 sensitivity: coll.resolved.sensitivity, | |
161 ignorePunctuation: coll.resolved.ignorePunctuation, | |
162 numeric: coll.resolved.numeric, | |
163 caseFirst: coll.resolved.caseFirst, | |
164 collation: coll.resolved.collation | |
165 }; | |
166 }, | |
167 ATTRIBUTES.DONT_ENUM | |
168 ); | |
169 %FunctionSetName(Intl.Collator.prototype.resolvedOptions, 'resolvedOptions'); | |
170 %FunctionRemovePrototype(Intl.Collator.prototype.resolvedOptions); | |
171 %SetNativeFlag(Intl.Collator.prototype.resolvedOptions); | |
172 | |
173 | |
174 /** | |
175 * Returns the subset of the given locale list for which this locale list | |
176 * has a matching (possibly fallback) locale. Locales appear in the same | |
177 * order in the returned list as in the input list. | |
178 * Options are optional parameter. | |
179 */ | |
180 %SetProperty(Intl.Collator, 'supportedLocalesOf', function(locales) { | |
181 if (%_IsConstructCall()) { | |
182 throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR); | |
183 } | |
184 | |
185 return supportedLocalesOf('collator', locales, arguments[1]); | |
186 }, | |
187 ATTRIBUTES.DONT_ENUM | |
188 ); | |
189 %FunctionSetName(Intl.Collator.supportedLocalesOf, 'supportedLocalesOf'); | |
190 %FunctionRemovePrototype(Intl.Collator.supportedLocalesOf); | |
191 %SetNativeFlag(Intl.Collator.supportedLocalesOf); | |
192 | |
193 | |
194 /** | |
195 * When the compare method is called with two arguments x and y, it returns a | |
196 * Number other than NaN that represents the result of a locale-sensitive | |
197 * String comparison of x with y. | |
198 * The result is intended to order String values in the sort order specified | |
199 * by the effective locale and collation options computed during construction | |
200 * of this Collator object, and will be negative, zero, or positive, depending | |
201 * on whether x comes before y in the sort order, the Strings are equal under | |
202 * the sort order, or x comes after y in the sort order, respectively. | |
203 */ | |
204 function compare(collator, x, y) { | |
205 return %InternalCompare(collator.collator, String(x), String(y)); | |
206 }; | |
207 | |
208 | |
209 addBoundMethod(Intl.Collator, 'compare', compare, 2); | |
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