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Diffstat (limited to 'deps/v8/src/extensions/i18n/break-iterator.cc')
| -rw-r--r-- | deps/v8/src/extensions/i18n/break-iterator.cc | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/deps/v8/src/extensions/i18n/break-iterator.cc b/deps/v8/src/extensions/i18n/break-iterator.cc deleted file mode 100644 index 0681e264ab..0000000000 --- a/deps/v8/src/extensions/i18n/break-iterator.cc +++ /dev/null @@ -1,333 +0,0 @@ -// 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. - -#include "break-iterator.h" - -#include <string.h> - -#include "i18n-utils.h" -#include "unicode/brkiter.h" -#include "unicode/locid.h" -#include "unicode/rbbi.h" - -namespace v8_i18n { - -static v8::Handle<v8::Value> ThrowUnexpectedObjectError(); -static icu::UnicodeString* ResetAdoptedText(v8::Handle<v8::Object>, - v8::Handle<v8::Value>); -static icu::BreakIterator* InitializeBreakIterator(v8::Handle<v8::String>, - v8::Handle<v8::Object>, - v8::Handle<v8::Object>); -static icu::BreakIterator* CreateICUBreakIterator(const icu::Locale&, - v8::Handle<v8::Object>); -static void SetResolvedSettings(const icu::Locale&, - icu::BreakIterator*, - v8::Handle<v8::Object>); - -icu::BreakIterator* BreakIterator::UnpackBreakIterator( - v8::Handle<v8::Object> obj) { - v8::HandleScope handle_scope; - - // v8::ObjectTemplate doesn't have HasInstance method so we can't check - // if obj is an instance of BreakIterator class. We'll check for a property - // that has to be in the object. The same applies to other services, like - // Collator and DateTimeFormat. - if (obj->HasOwnProperty(v8::String::New("breakIterator"))) { - return static_cast<icu::BreakIterator*>( - obj->GetAlignedPointerFromInternalField(0)); - } - - return NULL; -} - -void BreakIterator::DeleteBreakIterator(v8::Isolate* isolate, - v8::Persistent<v8::Object>* object, - void* param) { - // First delete the hidden C++ object. - // Unpacking should never return NULL here. That would only happen if - // this method is used as the weak callback for persistent handles not - // pointing to a break iterator. - v8::HandleScope handle_scope(isolate); - v8::Local<v8::Object> handle = v8::Local<v8::Object>::New(isolate, *object); - delete UnpackBreakIterator(handle); - - delete static_cast<icu::UnicodeString*>( - handle->GetAlignedPointerFromInternalField(1)); - - // Then dispose of the persistent handle to JS object. - object->Dispose(isolate); -} - - -// Throws a JavaScript exception. -static v8::Handle<v8::Value> ThrowUnexpectedObjectError() { - // Returns undefined, and schedules an exception to be thrown. - return v8::ThrowException(v8::Exception::Error( - v8::String::New("BreakIterator method called on an object " - "that is not a BreakIterator."))); -} - - -// Deletes the old value and sets the adopted text in corresponding -// JavaScript object. -icu::UnicodeString* ResetAdoptedText( - v8::Handle<v8::Object> obj, v8::Handle<v8::Value> value) { - // Get the previous value from the internal field. - icu::UnicodeString* text = static_cast<icu::UnicodeString*>( - obj->GetAlignedPointerFromInternalField(1)); - delete text; - - // Assign new value to the internal pointer. - v8::String::Value text_value(value); - text = new icu::UnicodeString( - reinterpret_cast<const UChar*>(*text_value), text_value.length()); - obj->SetAlignedPointerInInternalField(1, text); - - // Return new unicode string pointer. - return text; -} - -void BreakIterator::JSInternalBreakIteratorAdoptText( - const v8::FunctionCallbackInfo<v8::Value>& args) { - if (args.Length() != 2 || !args[0]->IsObject() || !args[1]->IsString()) { - v8::ThrowException(v8::Exception::Error( - v8::String::New( - "Internal error. Iterator and text have to be specified."))); - return; - } - - icu::BreakIterator* break_iterator = UnpackBreakIterator(args[0]->ToObject()); - if (!break_iterator) { - ThrowUnexpectedObjectError(); - return; - } - - break_iterator->setText(*ResetAdoptedText(args[0]->ToObject(), args[1])); -} - -void BreakIterator::JSInternalBreakIteratorFirst( - const v8::FunctionCallbackInfo<v8::Value>& args) { - icu::BreakIterator* break_iterator = UnpackBreakIterator(args[0]->ToObject()); - if (!break_iterator) { - ThrowUnexpectedObjectError(); - return; - } - - args.GetReturnValue().Set(static_cast<int32_t>(break_iterator->first())); -} - -void BreakIterator::JSInternalBreakIteratorNext( - const v8::FunctionCallbackInfo<v8::Value>& args) { - icu::BreakIterator* break_iterator = UnpackBreakIterator(args[0]->ToObject()); - if (!break_iterator) { - ThrowUnexpectedObjectError(); - return; - } - - args.GetReturnValue().Set(static_cast<int32_t>(break_iterator->next())); -} - -void BreakIterator::JSInternalBreakIteratorCurrent( - const v8::FunctionCallbackInfo<v8::Value>& args) { - icu::BreakIterator* break_iterator = UnpackBreakIterator(args[0]->ToObject()); - if (!break_iterator) { - ThrowUnexpectedObjectError(); - return; - } - - args.GetReturnValue().Set(static_cast<int32_t>(break_iterator->current())); -} - -void BreakIterator::JSInternalBreakIteratorBreakType( - const v8::FunctionCallbackInfo<v8::Value>& args) { - icu::BreakIterator* break_iterator = UnpackBreakIterator(args[0]->ToObject()); - if (!break_iterator) { - ThrowUnexpectedObjectError(); - return; - } - - // TODO(cira): Remove cast once ICU fixes base BreakIterator class. - icu::RuleBasedBreakIterator* rule_based_iterator = - static_cast<icu::RuleBasedBreakIterator*>(break_iterator); - int32_t status = rule_based_iterator->getRuleStatus(); - // Keep return values in sync with JavaScript BreakType enum. - v8::Handle<v8::String> result; - if (status >= UBRK_WORD_NONE && status < UBRK_WORD_NONE_LIMIT) { - result = v8::String::New("none"); - } else if (status >= UBRK_WORD_NUMBER && status < UBRK_WORD_NUMBER_LIMIT) { - result = v8::String::New("number"); - } else if (status >= UBRK_WORD_LETTER && status < UBRK_WORD_LETTER_LIMIT) { - result = v8::String::New("letter"); - } else if (status >= UBRK_WORD_KANA && status < UBRK_WORD_KANA_LIMIT) { - result = v8::String::New("kana"); - } else if (status >= UBRK_WORD_IDEO && status < UBRK_WORD_IDEO_LIMIT) { - result = v8::String::New("ideo"); - } else { - result = v8::String::New("unknown"); - } - args.GetReturnValue().Set(result); -} - -void BreakIterator::JSCreateBreakIterator( - const v8::FunctionCallbackInfo<v8::Value>& args) { - if (args.Length() != 3 || !args[0]->IsString() || !args[1]->IsObject() || - !args[2]->IsObject()) { - v8::ThrowException(v8::Exception::Error( - v8::String::New("Internal error, wrong parameters."))); - return; - } - - v8::Isolate* isolate = args.GetIsolate(); - v8::Local<v8::ObjectTemplate> break_iterator_template = - Utils::GetTemplate2(isolate); - - // Create an empty object wrapper. - v8::Local<v8::Object> local_object = break_iterator_template->NewInstance(); - // But the handle shouldn't be empty. - // That can happen if there was a stack overflow when creating the object. - if (local_object.IsEmpty()) { - args.GetReturnValue().Set(local_object); - return; - } - - // Set break iterator as internal field of the resulting JS object. - icu::BreakIterator* break_iterator = InitializeBreakIterator( - args[0]->ToString(), args[1]->ToObject(), args[2]->ToObject()); - - if (!break_iterator) { - v8::ThrowException(v8::Exception::Error(v8::String::New( - "Internal error. Couldn't create ICU break iterator."))); - return; - } else { - local_object->SetAlignedPointerInInternalField(0, break_iterator); - // Make sure that the pointer to adopted text is NULL. - local_object->SetAlignedPointerInInternalField(1, NULL); - - v8::TryCatch try_catch; - local_object->Set(v8::String::New("breakIterator"), - v8::String::New("valid")); - if (try_catch.HasCaught()) { - v8::ThrowException(v8::Exception::Error( - v8::String::New("Internal error, couldn't set property."))); - return; - } - } - - v8::Persistent<v8::Object> wrapper(isolate, local_object); - // Make object handle weak so we can delete iterator once GC kicks in. - wrapper.MakeWeak<void>(NULL, &DeleteBreakIterator); - args.GetReturnValue().Set(wrapper); - wrapper.ClearAndLeak(); -} - -static icu::BreakIterator* InitializeBreakIterator( - v8::Handle<v8::String> locale, - v8::Handle<v8::Object> options, - v8::Handle<v8::Object> resolved) { - // Convert BCP47 into ICU locale format. - UErrorCode status = U_ZERO_ERROR; - icu::Locale icu_locale; - char icu_result[ULOC_FULLNAME_CAPACITY]; - int icu_length = 0; - v8::String::AsciiValue bcp47_locale(locale); - if (bcp47_locale.length() != 0) { - uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY, - &icu_length, &status); - if (U_FAILURE(status) || icu_length == 0) { - return NULL; - } - icu_locale = icu::Locale(icu_result); - } - - icu::BreakIterator* break_iterator = - CreateICUBreakIterator(icu_locale, options); - if (!break_iterator) { - // Remove extensions and try again. - icu::Locale no_extension_locale(icu_locale.getBaseName()); - break_iterator = CreateICUBreakIterator(no_extension_locale, options); - - // Set resolved settings (locale). - SetResolvedSettings(no_extension_locale, break_iterator, resolved); - } else { - SetResolvedSettings(icu_locale, break_iterator, resolved); - } - - return break_iterator; -} - -static icu::BreakIterator* CreateICUBreakIterator( - const icu::Locale& icu_locale, v8::Handle<v8::Object> options) { - UErrorCode status = U_ZERO_ERROR; - icu::BreakIterator* break_iterator = NULL; - icu::UnicodeString type; - if (!Utils::ExtractStringSetting(options, "type", &type)) { - // Type had to be in the options. This would be an internal error. - return NULL; - } - - if (type == UNICODE_STRING_SIMPLE("character")) { - break_iterator = - icu::BreakIterator::createCharacterInstance(icu_locale, status); - } else if (type == UNICODE_STRING_SIMPLE("sentence")) { - break_iterator = - icu::BreakIterator::createSentenceInstance(icu_locale, status); - } else if (type == UNICODE_STRING_SIMPLE("line")) { - break_iterator = - icu::BreakIterator::createLineInstance(icu_locale, status); - } else { - // Defualt is word iterator. - break_iterator = - icu::BreakIterator::createWordInstance(icu_locale, status); - } - - if (U_FAILURE(status)) { - delete break_iterator; - return NULL; - } - - return break_iterator; -} - -static void SetResolvedSettings(const icu::Locale& icu_locale, - icu::BreakIterator* date_format, - v8::Handle<v8::Object> resolved) { - UErrorCode status = U_ZERO_ERROR; - - // Set the locale - char result[ULOC_FULLNAME_CAPACITY]; - status = U_ZERO_ERROR; - uloc_toLanguageTag( - icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status); - if (U_SUCCESS(status)) { - resolved->Set(v8::String::New("locale"), v8::String::New(result)); - } else { - // This would never happen, since we got the locale from ICU. - resolved->Set(v8::String::New("locale"), v8::String::New("und")); - } -} - -} // namespace v8_i18n |