f8db2414f2
This removes the FACTORY helper macro to avoid accidental TLS access when using the factory. Most internal code has access to the Isolate by now whereas tests which are not performance critical still heavily use TLS access through explicit Isolate::Current() calls. R=svenpanne@chromium.org Review URL: https://codereview.chromium.org/16337005 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14931 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
203 lines
7.8 KiB
C++
203 lines
7.8 KiB
C++
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "api.h"
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#include "execution.h"
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#include "messages.h"
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#include "spaces-inl.h"
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namespace v8 {
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namespace internal {
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// If no message listeners have been registered this one is called
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// by default.
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void MessageHandler::DefaultMessageReport(Isolate* isolate,
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const MessageLocation* loc,
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Handle<Object> message_obj) {
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SmartArrayPointer<char> str = GetLocalizedMessage(isolate, message_obj);
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if (loc == NULL) {
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PrintF("%s\n", *str);
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} else {
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HandleScope scope(isolate);
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Handle<Object> data(loc->script()->name(), isolate);
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SmartArrayPointer<char> data_str;
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if (data->IsString())
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data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS);
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PrintF("%s:%i: %s\n", *data_str ? *data_str : "<unknown>",
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loc->start_pos(), *str);
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}
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}
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Handle<JSMessageObject> MessageHandler::MakeMessageObject(
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Isolate* isolate,
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const char* type,
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MessageLocation* loc,
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Vector< Handle<Object> > args,
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Handle<String> stack_trace,
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Handle<JSArray> stack_frames) {
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Factory* factory = isolate->factory();
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Handle<String> type_handle = factory->InternalizeUtf8String(type);
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Handle<FixedArray> arguments_elements =
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factory->NewFixedArray(args.length());
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for (int i = 0; i < args.length(); i++) {
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arguments_elements->set(i, *args[i]);
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}
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Handle<JSArray> arguments_handle =
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factory->NewJSArrayWithElements(arguments_elements);
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int start = 0;
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int end = 0;
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Handle<Object> script_handle = factory->undefined_value();
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if (loc) {
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start = loc->start_pos();
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end = loc->end_pos();
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script_handle = GetScriptWrapper(loc->script());
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}
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Handle<Object> stack_trace_handle = stack_trace.is_null()
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? Handle<Object>::cast(factory->undefined_value())
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: Handle<Object>::cast(stack_trace);
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Handle<Object> stack_frames_handle = stack_frames.is_null()
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? Handle<Object>::cast(factory->undefined_value())
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: Handle<Object>::cast(stack_frames);
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Handle<JSMessageObject> message =
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factory->NewJSMessageObject(type_handle,
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arguments_handle,
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start,
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end,
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script_handle,
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stack_trace_handle,
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stack_frames_handle);
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return message;
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}
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void MessageHandler::ReportMessage(Isolate* isolate,
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MessageLocation* loc,
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Handle<Object> message) {
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// We are calling into embedder's code which can throw exceptions.
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// Thus we need to save current exception state, reset it to the clean one
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// and ignore scheduled exceptions callbacks can throw.
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// We pass the exception object into the message handler callback though.
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Object* exception_object = isolate->heap()->undefined_value();
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if (isolate->has_pending_exception()) {
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isolate->pending_exception()->ToObject(&exception_object);
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}
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Handle<Object> exception_handle(exception_object, isolate);
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Isolate::ExceptionScope exception_scope(isolate);
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isolate->clear_pending_exception();
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isolate->set_external_caught_exception(false);
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v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message);
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v8::Local<v8::Value> api_exception_obj = v8::Utils::ToLocal(exception_handle);
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v8::NeanderArray global_listeners(isolate->factory()->message_listeners());
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int global_length = global_listeners.length();
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if (global_length == 0) {
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DefaultMessageReport(isolate, loc, message);
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if (isolate->has_scheduled_exception()) {
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isolate->clear_scheduled_exception();
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}
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} else {
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for (int i = 0; i < global_length; i++) {
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HandleScope scope(isolate);
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if (global_listeners.get(i)->IsUndefined()) continue;
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v8::NeanderObject listener(JSObject::cast(global_listeners.get(i)));
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Handle<Foreign> callback_obj(Foreign::cast(listener.get(0)));
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v8::MessageCallback callback =
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FUNCTION_CAST<v8::MessageCallback>(callback_obj->foreign_address());
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Handle<Object> callback_data(listener.get(1), isolate);
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{
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// Do not allow exceptions to propagate.
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v8::TryCatch try_catch;
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callback(api_message_obj, callback_data->IsUndefined()
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? api_exception_obj
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: v8::Utils::ToLocal(callback_data));
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}
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if (isolate->has_scheduled_exception()) {
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isolate->clear_scheduled_exception();
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}
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}
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}
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}
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Handle<String> MessageHandler::GetMessage(Isolate* isolate,
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Handle<Object> data) {
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Factory* factory = isolate->factory();
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Handle<String> fmt_str =
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factory->InternalizeOneByteString(STATIC_ASCII_VECTOR("FormatMessage"));
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Handle<JSFunction> fun =
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Handle<JSFunction>(
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JSFunction::cast(
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isolate->js_builtins_object()->
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GetPropertyNoExceptionThrown(*fmt_str)));
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Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data);
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Handle<Object> argv[] = { Handle<Object>(message->type(), isolate),
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Handle<Object>(message->arguments(), isolate) };
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bool caught_exception;
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Handle<Object> result =
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Execution::TryCall(fun,
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isolate->js_builtins_object(),
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ARRAY_SIZE(argv),
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argv,
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&caught_exception);
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if (caught_exception || !result->IsString()) {
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return factory->InternalizeOneByteString(STATIC_ASCII_VECTOR("<error>"));
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}
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Handle<String> result_string = Handle<String>::cast(result);
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// A string that has been obtained from JS code in this way is
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// likely to be a complicated ConsString of some sort. We flatten it
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// here to improve the efficiency of converting it to a C string and
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// other operations that are likely to take place (see GetLocalizedMessage
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// for example).
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FlattenString(result_string);
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return result_string;
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}
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SmartArrayPointer<char> MessageHandler::GetLocalizedMessage(
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Isolate* isolate,
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Handle<Object> data) {
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HandleScope scope(isolate);
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return GetMessage(isolate, data)->ToCString(DISALLOW_NULLS);
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}
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} } // namespace v8::internal
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