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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// limitations under the License.
// ECMAScript 402 API implementation is broken into separate files for
// each service. The build system combines them together into one
// Intl namespace.
/**
* Initializes the given object so it's a valid BreakIterator instance.
* Useful for subclassing.
*/
function initializeBreakIterator(iterator, locales, options) {
native function NativeJSCreateBreakIterator();
if (iterator.hasOwnProperty('__initializedIntlObject')) {
throw new TypeError('Trying to re-initialize v8BreakIterator object.');
}
if (options === undefined) {
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.defineProperties({}, {
requestedLocale: {value: locale.locale, writable: true},
type: {value: internalOptions.type, writable: true},
locale: {writable: true}
});
var internalIterator = NativeJSCreateBreakIterator(locale.locale,
internalOptions,
resolved);
Object.defineProperty(iterator, 'iterator', {value: internalIterator});
Object.defineProperty(iterator, 'resolved', {value: resolved});
Object.defineProperty(iterator, '__initializedIntlObject',
{value: 'breakiterator'});
return iterator;
}
/**
* Constructs Intl.v8BreakIterator object given optional locales and options
* parameters.
*
* @constructor
*/
%SetProperty(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(toObject(this), locales, options);
},
ATTRIBUTES.DONT_ENUM
);
/**
* BreakIterator resolvedOptions method.
*/
%SetProperty(Intl.v8BreakIterator.prototype, 'resolvedOptions', function() {
if (%_IsConstructCall()) {
throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR);
}
if (!this || typeof this !== 'object' ||
this.__initializedIntlObject !== 'breakiterator') {
throw new TypeError('resolvedOptions method called on a non-object or ' +
'on a object that is not Intl.v8BreakIterator.');
}
var segmenter = this;
var locale = getOptimalLanguageTag(segmenter.resolved.requestedLocale,
segmenter.resolved.locale);
return {
locale: locale,
type: segmenter.resolved.type
};
},
ATTRIBUTES.DONT_ENUM
);
%FunctionSetName(Intl.v8BreakIterator.prototype.resolvedOptions,
'resolvedOptions');
%FunctionRemovePrototype(Intl.v8BreakIterator.prototype.resolvedOptions);
%SetNativeFlag(Intl.v8BreakIterator.prototype.resolvedOptions);
/**
* 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.
*/
%SetProperty(Intl.v8BreakIterator, 'supportedLocalesOf', function(locales) {
if (%_IsConstructCall()) {
throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR);
}
return supportedLocalesOf('breakiterator', locales, arguments[1]);
},
ATTRIBUTES.DONT_ENUM
);
%FunctionSetName(Intl.v8BreakIterator.supportedLocalesOf, 'supportedLocalesOf');
%FunctionRemovePrototype(Intl.v8BreakIterator.supportedLocalesOf);
%SetNativeFlag(Intl.v8BreakIterator.supportedLocalesOf);
/**
* Adopts text to segment using the iterator. Old text, if present,
* gets discarded.
*/
function adoptText(iterator, text) {
native function NativeJSBreakIteratorAdoptText();
NativeJSBreakIteratorAdoptText(iterator.iterator, String(text));
}
/**
* Returns index of the first break in the string and moves current pointer.
*/
function first(iterator) {
native function NativeJSBreakIteratorFirst();
return NativeJSBreakIteratorFirst(iterator.iterator);
}
/**
* Returns the index of the next break and moves the pointer.
*/
function next(iterator) {
native function NativeJSBreakIteratorNext();
return NativeJSBreakIteratorNext(iterator.iterator);
}
/**
* Returns index of the current break.
*/
function current(iterator) {
native function NativeJSBreakIteratorCurrent();
return NativeJSBreakIteratorCurrent(iterator.iterator);
}
/**
* Returns type of the current break.
*/
function breakType(iterator) {
native function NativeJSBreakIteratorBreakType();
return NativeJSBreakIteratorBreakType(iterator.iterator);
}
addBoundMethod(Intl.v8BreakIterator, 'adoptText', adoptText, 1);
addBoundMethod(Intl.v8BreakIterator, 'first', first, 0);
addBoundMethod(Intl.v8BreakIterator, 'next', next, 0);
addBoundMethod(Intl.v8BreakIterator, 'current', current, 0);
addBoundMethod(Intl.v8BreakIterator, 'breakType', breakType, 0);
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