// Copyright (c) 2008, 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:
//
//     * 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 "config.h"

#if ENABLE(WORKERS)

#include "WorkerScriptController.h"

#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "DOMTimer.h"
#include "WorkerContext.h"
#include "WorkerContextExecutionProxy.h"
#include "WorkerObjectProxy.h"
#include "WorkerThread.h"

namespace WebCore {

WorkerScriptController::WorkerScriptController(WorkerContext* workerContext)
    : m_workerContext(workerContext)
    , m_proxy(new WorkerContextExecutionProxy(workerContext))
    , m_executionForbidden(false)
{
}

WorkerScriptController::~WorkerScriptController()
{
}

ScriptValue WorkerScriptController::evaluate(const ScriptSourceCode& sourceCode)
{
    {
        MutexLocker lock(m_sharedDataMutex);
        if (m_executionForbidden)
            return ScriptValue();
    }

    v8::Local<v8::Value> result =
        m_proxy->Evaluate(sourceCode.source(),
                          sourceCode.url().string(),
                          sourceCode.startLine() - 1);

    m_workerContext->thread()->workerObjectProxy()->
        reportPendingActivity(m_workerContext->hasPendingActivity());

    return ScriptValue();
}

void WorkerScriptController::forbidExecution()
{
    // This function is called from another thread.
    MutexLocker lock(m_sharedDataMutex);
    m_executionForbidden = true;
}

} // namespace WebCore

#endif // ENABLE(WORKERS)