JSWorkerCustom.cpp   [plain text]

/*
 * Copyright (C) 2008-2009, 2016 Apple Inc. All Rights Reserved.
 * Copyright (C) 2011 Google Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "config.h"
#include "JSWorker.h"

#include "Document.h"
#include "JSDOMBinding.h"
#include "JSDOMGlobalObject.h"
#include "JSDOMWindowCustom.h"
#include "Worker.h"
#include <runtime/Error.h>

using namespace JSC;

namespace WebCore {

EncodedJSValue JSC_HOST_CALL constructJSWorker(ExecState& state)
{
    VM& vm = state.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    ASSERT(jsCast<DOMConstructorObject*>(state.jsCallee()));
    ASSERT(jsCast<DOMConstructorObject*>(state.jsCallee())->globalObject());
    auto& globalObject = *jsCast<DOMConstructorObject*>(state.jsCallee())->globalObject();

    if (!state.argumentCount())
        return throwVMError(&state, scope, createNotEnoughArgumentsError(&state));

    String scriptURL = state.uncheckedArgument(0).toWTFString(&state);
    RETURN_IF_EXCEPTION(scope, encodedJSValue());

    // See section 4.8.2 step 14 of WebWorkers for why this is the lexicalGlobalObject.
    auto& window = asJSDOMWindow(state.lexicalGlobalObject())->wrapped();

    ASSERT(window.document());
    return JSValue::encode(toJSNewlyCreated(state, globalObject, scope, Worker::create(*window.document(), scriptURL, globalObject.runtimeFlags())));
}

} // namespace WebCore