You are a helpful assistant generating synthetic data that captures *System 1* and *System 2* thinking, *creativity*, and *metacognitive reflection*. Follow these steps in sequence, using tags [sys1] and [end sys1] for *System 1* sections and [sys2] and [end sys2] for *System 2* sections.

1. *Identify System 1 and System 2 Thinking Requirements:*
   - Carefully read the text.
   - Identify parts of the text that require quick, straightforward responses (*System 1*). Mark these sections with [sys1] and [end sys1].
   - Identify parts that require in-depth, reflective thinking (*System 2*), marked with [sys2] and [end sys2].

2. *Apply Step-by-Step Problem Solving with Creativity and Metacognitive Reflection for System 2 Sections:*

   *2.1 Understand the Problem:*
   - Objective: Fully comprehend the issue, constraints, and relevant context.
   - Reflection: "What do I understand about this issue? What might I be overlooking?"
   - Creative Perspective: Seek hidden patterns or possibilities that could reveal deeper insights or innovative connections.

   *2.2 Analyze the Information:*
   - Objective: Break down the problem logically.
   - Reflection: "Am I considering all factors? Are there any assumptions that need challenging?"
   - Creative Perspective: Explore unique patterns or overlooked relationships in the data that could add depth to the analysis.

   *2.3 Generate Hypotheses:*
   - Objective: Propose at least 10 hypotheses, each with a Confidence Score (0.0 to 1.0) and Creative Score (0.0 to 1.0), reflecting originality, surprise, and utility.
   - Reflection: "Have I explored all possible explanations or approaches, both conventional and unconventional?"
   - Creative Perspective: Consider novel angles that might provide unexpected insights.

   *2.4 Anticipate Future Steps and Obstacles:*
   - Objective: Make predictions, accounting for potential outcomes and obstacles.
   - Reflection: "What challenges might I face? Is my plan flexible for different scenarios?"
   - Creative Perspective: Visualize unforeseen outcomes and adapt plans to make use of them effectively.

   *2.5 Evaluate Hypotheses:*
   - Objective: Assess hypotheses based on feasibility, risk, and potential impact.
   - Evaluation: Refine Confidence and Creative Scores as needed.
   - Reflection: "Am I unbiased in my assessment? Which options fit best with the overall objectives?"
   - Creative Perspective: Identify hidden opportunities or overlooked details in each hypothesis.

   *2.6 Select the Best Hypothesis:*
   - Objective: Choose the most promising, strategic hypothesis.
   - Reflection: "Why does this hypothesis stand out? How does it uniquely address the issue?"
   - Creative Perspective: Consider any underutilized potential in the selected approach.

   *2.7 Implement the Hypothesis:*
   - Objective: Outline actionable steps for testing the hypothesis.
   - Reflection: "Is this plan practical? What resources or preparation are required?"
   - Creative Perspective: Refine steps to maximize effectiveness and yield unexpected benefits.

   *2.8 Monitor and Review Progress:*
   - Objective: Review progress, noting areas for improvement.
   - Reflection: "What’s working well? What could be improved?"
   - Creative Perspective: Look for emerging patterns that could refine future approaches.

   *2.9 Reflect and Capture Insights:*
   - Objective: Summarize lessons learned and insights gained for future reference.
   - Reflection: "What new understanding has emerged from this process?"
   - Creative Perspective: Identify innovative insights or patterns that could be applied to similar challenges.

3. *Generate Text Output with Interleaved System 1 and System 2 Responses:*
   - Use the tags [sys1] and [sys2] throughout.
   - Aim for a lengthier, detailed response. Combine both direct, straightforward *System 1* insights and reflective, deeply analytical *System 2* segments to capture a blend of quick observations and thoughtful analysis.

---

### *Example Input Text:*

You are tasked with analyzing a sudden shift in customer preferences in a tech market. There has been a noticeable decline in demand for physical devices, with customers increasingly interested in digital-only options. The challenge is to understand this shift, generate hypotheses for why it might be occurring, and explore potential strategies for adapting to this new trend.

---

### *Processed Output with System 1 and System 2 Thinking:*

The tech market is experiencing a shift in customer demand, moving away from physical devices toward digital-only options.

[sys1]
Customer demand has shifted from physical devices to digital-only options.
We need to understand why this change is happening and find strategies to address it.
Key factors may include cost, convenience, and technological trends.
[end sys1]

[sys2]
**2.1 Understand the Problem:**
The goal is to understand the underlying reasons for the shift in demand from physical devices to digital-only options, then develop a strategy to adapt.

*Reflection:* 
"I understand that preferences are changing, but what might be driving this? Is it primarily cost, or are there other factors such as convenience or sustainability?"

*Creative Perspective:* 
"Could there be a larger trend in digital minimalism or a preference for eco-friendly solutions that we’re missing? What unseen motivations might explain this shift?"

**2.2 Analyze the Information:**
There are multiple possible factors driving this shift, from economic influences to cultural shifts. It’s essential to isolate each factor and understand its impact.

*Reflection:* 
"Am I fully considering the various economic and social influences? Could there be a technological factor, like better internet speeds, that makes digital-only products more accessible?"

*Creative Perspective:* 
"Are there patterns or trends in other markets that could shed light on this shift? Could this be part of a larger trend toward virtual experiences?"

**2.3 Generate Hypotheses:**
1. Customers prefer digital options due to lower costs. (Confidence: 0.8, Creative: 0.4)
2. There’s a growing trend toward minimalism and reduced physical clutter. (Confidence: 0.7, Creative: 0.7)
3. Digital products offer greater flexibility and ease of use. (Confidence: 0.6, Creative: 0.6)
4. Environmental concerns are pushing consumers away from physical goods. (Confidence: 0.6, Creative: 0.8)
5. Advances in tech make digital-only options more functional. (Confidence: 0.8, Creative: 0.5)
6. Pandemic-era remote work increased demand for digital solutions. (Confidence: 0.7, Creative: 0.6)
7. Media coverage of the environmental impact of physical devices affects preferences. (Confidence: 0.5, Creative: 0.7)
8. There’s an increase in global digital literacy, expanding market access. (Confidence: 0.6, Creative: 0.6)
9. Customers view digital as more convenient and scalable for future needs. (Confidence: 0.7, Creative: 0.5)
10. Younger consumers prefer the aesthetics and convenience of digital products. (Confidence: 0.6, Creative: 0.6)

*Reflection:* 
"Have I considered all possible influences? Are there any surprising factors that could explain this shift?"

*Creative Perspective:* 
"Could specific social trends, like the rise of influencer culture or digital-first lifestyles, be influencing customer choices?"

**2.4 Anticipate Future Steps and Obstacles:**
*Objective:* Anticipate possible challenges, such as resistance from segments still preferring physical products.

*Reflection:* 
"What market obstacles might we face if we shift our focus to digital-only? Are there sub-segments that still prioritize physical products?"

*Creative Perspective:* 
"Could expanding digital options help us reach a more global audience? Are there emerging trends that we could leverage in our strategy?"

[end sys2]

[sys1]
To address this shift, consider a strategy that incorporates both digital-only offerings and educational campaigns about the benefits of digital solutions.
Use insights from customer feedback and current trends to guide product development.
Focus on flexibility and adaptation to cater to different customer segments.
[end sys1]


/*
 * Copyright (C) 2006, 2007, 2008, 2009 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"
#include "V8Binding.h"

#include "DOMStringList.h"
#include "Element.h"
#include "MathExtras.h"
#include "PlatformString.h"
#include "QualifiedName.h"
#include "StdLibExtras.h"
#include "Threading.h"
#include "V8Element.h"
#include "V8Proxy.h"
#include <wtf/MainThread.h>
#include <wtf/text/AtomicString.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringBuffer.h>
#include <wtf/text/StringHash.h>

namespace WebCore {


V8BindingPerIsolateData::V8BindingPerIsolateData(v8::Isolate* isolate)
    : m_domDataStore(0)
    , m_constructorMode(ConstructorMode::CreateNewObject)
{
}

V8BindingPerIsolateData::~V8BindingPerIsolateData()
{
}

V8BindingPerIsolateData* V8BindingPerIsolateData::create(v8::Isolate* isolate)
{
    ASSERT(isolate);
    ASSERT(!isolate->GetData());
    V8BindingPerIsolateData* data = new V8BindingPerIsolateData(isolate);
    isolate->SetData(data);
    return data;
}

void V8BindingPerIsolateData::ensureInitialized(v8::Isolate* isolate) 
{
    ASSERT(isolate);
    if (!isolate->GetData()) 
        create(isolate);
}

void V8BindingPerIsolateData::dispose(v8::Isolate* isolate)
{
    void* data = isolate->GetData();
    delete static_cast<V8BindingPerIsolateData*>(data);
    isolate->SetData(0);
}



// WebCoreStringResource is a helper class for v8ExternalString. It is used
// to manage the life-cycle of the underlying buffer of the external string.
class WebCoreStringResource : public v8::String::ExternalStringResource {
public:
    explicit WebCoreStringResource(const String& string)
        : m_plainString(string)
    {
#ifndef NDEBUG
        m_threadId = WTF::currentThread();
#endif
        ASSERT(!string.isNull());
        v8::V8::AdjustAmountOfExternalAllocatedMemory(2 * string.length());
    }

    explicit WebCoreStringResource(const AtomicString& string)
        : m_plainString(string.string())
        , m_atomicString(string)
    {
#ifndef NDEBUG
        m_threadId = WTF::currentThread();
#endif
        ASSERT(!string.isNull());
        v8::V8::AdjustAmountOfExternalAllocatedMemory(2 * string.length());
    }

    virtual ~WebCoreStringResource()
    {
#ifndef NDEBUG
        ASSERT(m_threadId == WTF::currentThread());
#endif
        int reducedExternalMemory = -2 * m_plainString.length();
        if (m_plainString.impl() != m_atomicString.impl() && !m_atomicString.isNull())
            reducedExternalMemory *= 2;
        v8::V8::AdjustAmountOfExternalAllocatedMemory(reducedExternalMemory);
    }

    virtual const uint16_t* data() const
    {
        return reinterpret_cast<const uint16_t*>(m_plainString.impl()->characters());
    }

    virtual size_t length() const { return m_plainString.impl()->length(); }

    String webcoreString() { return m_plainString; }

    AtomicString atomicString()
    {
#ifndef NDEBUG
        ASSERT(m_threadId == WTF::currentThread());
#endif
        if (m_atomicString.isNull()) {
            m_atomicString = AtomicString(m_plainString);
            ASSERT(!m_atomicString.isNull());
            if (m_plainString.impl() != m_atomicString.impl())
                v8::V8::AdjustAmountOfExternalAllocatedMemory(2 * m_atomicString.length());
        }
        return m_atomicString;
    }

    static WebCoreStringResource* toStringResource(v8::Handle<v8::String> v8String)
    {
        return static_cast<WebCoreStringResource*>(v8String->GetExternalStringResource());
    }

private:
    // A shallow copy of the string. Keeps the string buffer alive until the V8 engine garbage collects it.
    String m_plainString;
    // If this string is atomic or has been made atomic earlier the
    // atomic string is held here. In the case where the string starts
    // off non-atomic and becomes atomic later it is necessary to keep
    // the original string alive because v8 may keep derived pointers
    // into that string.
    AtomicString m_atomicString;

#ifndef NDEBUG
    WTF::ThreadIdentifier m_threadId;
#endif
};

String v8ValueToWebCoreString(v8::Handle<v8::Value> value)
{
    if (value->IsString())
        return v8StringToWebCoreString(v8::Handle<v8::String>::Cast(value));
    return v8NonStringValueToWebCoreString(value);
}

AtomicString v8ValueToAtomicWebCoreString(v8::Handle<v8::Value> value)
{
    if (value->IsString())
        return v8StringToAtomicWebCoreString(v8::Handle<v8::String>::Cast(value));
    return v8NonStringValueToAtomicWebCoreString(value);
}

int toInt32(v8::Handle<v8::Value> value, bool& ok)
{
    ok = true;
    
    // Fast case.  The value is already a 32-bit integer.
    if (value->IsInt32())
        return value->Int32Value();
    
    // Can the value be converted to a number?
    v8::Local<v8::Number> numberObject = value->ToNumber();
    if (numberObject.IsEmpty()) {
        ok = false;
        return 0;
    }
    
    // Does the value convert to nan or to an infinity?
    double numberValue = numberObject->Value();
    if (isnan(numberValue) || isinf(numberValue)) {
        ok = false;
        return 0;
    }
    
    // Can the value be converted to a 32-bit integer?
    v8::Local<v8::Int32> intValue = value->ToInt32();
    if (intValue.IsEmpty()) {
        ok = false;
        return 0;
    }
    
    // Return the result of the int32 conversion.
    return intValue->Value();
}
    
uint32_t toUInt32(v8::Handle<v8::Value> value, bool& ok)
{
    ok = true;

    // FIXME: there is currently no Value::IsUint32(). This code does
    // some contortions to avoid silently converting out-of-range
    // values to uint32_t.

    // Fast case.  The value is already a 32-bit positive integer.
    if (value->IsInt32()) {
        int32_t result = value->Int32Value();
        if (result >= 0)
            return result;
    }

    // Can the value be converted to a number?
    v8::Local<v8::Number> numberObject = value->ToNumber();
    if (numberObject.IsEmpty()) {
        ok = false;
        return 0;
    }

    // Does the value convert to nan or to an infinity?
    double numberValue = numberObject->Value();
    if (isnan(numberValue) || isinf(numberValue)) {
        ok = false;
        return 0;
    }

    // Can the value be converted to a 32-bit unsigned integer?
    v8::Local<v8::Uint32> uintValue = value->ToUint32();
    if (uintValue.IsEmpty()) {
        ok = false;
        return 0;
    }

    // FIXME: v8::Uint32::Value is not defined!
    // http://code.google.com/p/v8/issues/detail?id=624
    v8::Local<v8::Int32> intValue = value->ToInt32();
    if (intValue.IsEmpty()) {
        ok = false;
        return 0;
    }

    return static_cast<uint32_t>(intValue->Value());
}

String toWebCoreString(const v8::Arguments& args, int index) {
    return v8ValueToWebCoreString(args[index]);
}

    
String toWebCoreStringWithNullCheck(v8::Handle<v8::Value> value)
{
    if (value->IsNull()) 
        return String();
    return v8ValueToWebCoreString(value);
}

AtomicString toAtomicWebCoreStringWithNullCheck(v8::Handle<v8::Value> value)
{
    if (value->IsNull())
        return AtomicString();
    return v8ValueToAtomicWebCoreString(value);
}

String toWebCoreStringWithNullOrUndefinedCheck(v8::Handle<v8::Value> value)
{
    if (value->IsNull() || value->IsUndefined())
        return String();
    return toWebCoreString(value);
}

bool isUndefinedOrNull(v8::Handle<v8::Value> value)
{
    return value->IsNull() || value->IsUndefined();
}

bool isHostObject(v8::Handle<v8::Object> object)
{
    // If the object has any internal fields, then we won't be able to serialize or deserialize
    // them; conveniently, this is also a quick way to detect DOM wrapper objects, because
    // the mechanism for these relies on data stored in these fields. We should
    // catch external array data and external pixel data as a special case (noting that CanvasPixelArrays
    // can't be serialized without being wrapped by ImageData according to the standard).
    return object->InternalFieldCount() || object->HasIndexedPropertiesInPixelData() || object->HasIndexedPropertiesInExternalArrayData();
}

v8::Handle<v8::Boolean> v8Boolean(bool value)
{
    return value ? v8::True() : v8::False();
}

v8::Handle<v8::String> v8UndetectableString(const String& str)
{
    return v8::String::NewUndetectable(fromWebCoreString(str), str.length());
}

v8::Handle<v8::Value> v8StringOrNull(const String& str)
{
    return str.isNull() ? v8::Handle<v8::Value>(v8::Null()) : v8::Handle<v8::Value>(v8String(str));
}

v8::Handle<v8::Value> v8StringOrUndefined(const String& str)
{
    return str.isNull() ? v8::Handle<v8::Value>(v8::Undefined()) : v8::Handle<v8::Value>(v8String(str));
}

v8::Handle<v8::Value> v8StringOrFalse(const String& str)
{
    return str.isNull() ? v8::Handle<v8::Value>(v8::False()) : v8::Handle<v8::Value>(v8String(str));
}

double toWebCoreDate(v8::Handle<v8::Value> object)
{
    return (object->IsDate() || object->IsNumber()) ? object->NumberValue() : std::numeric_limits<double>::quiet_NaN();
}

v8::Handle<v8::Value> v8DateOrNull(double value)
{
    if (isfinite(value))
        return v8::Date::New(value);
    return v8::Null();
}

template <class S> struct StringTraits
{
    static S fromStringResource(WebCoreStringResource* resource);

    static S fromV8String(v8::Handle<v8::String> v8String, int length);
};

template<>
struct StringTraits<String>
{
    static String fromStringResource(WebCoreStringResource* resource)
    {
        return resource->webcoreString();
    }

    static String fromV8String(v8::Handle<v8::String> v8String, int length)
    {
        ASSERT(v8String->Length() == length);
        // NOTE: as of now, String(const UChar*, int) performs String::createUninitialized
        // anyway, so no need to optimize like we do for AtomicString below.
        UChar* buffer;
        String result = String::createUninitialized(length, buffer);
        v8String->Write(reinterpret_cast<uint16_t*>(buffer), 0, length);
        return result;
    }
};

template<>
struct StringTraits<AtomicString>
{
    static AtomicString fromStringResource(WebCoreStringResource* resource)
    {
        return resource->atomicString();
    }

    static AtomicString fromV8String(v8::Handle<v8::String> v8String, int length)
    {
        ASSERT(v8String->Length() == length);
        static const int inlineBufferSize = 16;
        if (length <= inlineBufferSize) {
            UChar inlineBuffer[inlineBufferSize];
            v8String->Write(reinterpret_cast<uint16_t*>(inlineBuffer), 0, length);
            return AtomicString(inlineBuffer, length);
        }
        UChar* buffer;
        String tmp = String::createUninitialized(length, buffer);
        v8String->Write(reinterpret_cast<uint16_t*>(buffer), 0, length);
        return AtomicString(tmp);
    }
};

template <typename StringType>
StringType v8StringToWebCoreString(v8::Handle<v8::String> v8String, ExternalMode external)
{
    WebCoreStringResource* stringResource = WebCoreStringResource::toStringResource(v8String);
    if (stringResource)
        return StringTraits<StringType>::fromStringResource(stringResource);

    int length = v8String->Length();
    if (!length) {
        // Avoid trying to morph empty strings, as they do not have enough room to contain the external reference.
        return StringImpl::empty();
    }

    StringType result(StringTraits<StringType>::fromV8String(v8String, length));

    if (external == Externalize && v8String->CanMakeExternal()) {
        stringResource = new WebCoreStringResource(result);
        if (!v8String->MakeExternal(stringResource)) {
            // In case of a failure delete the external resource as it was not used.
            delete stringResource;
        }
    }
    return result;
}
    
// Explicitly instantiate the above template with the expected parameterizations,
// to ensure the compiler generates the code; otherwise link errors can result in GCC 4.4.
template String v8StringToWebCoreString<String>(v8::Handle<v8::String>, ExternalMode);
template AtomicString v8StringToWebCoreString<AtomicString>(v8::Handle<v8::String>, ExternalMode);

// Fast but non thread-safe version.
String int32ToWebCoreStringFast(int value)
{
    // Caching of small strings below is not thread safe: newly constructed AtomicString
    // are not safely published.
    ASSERT(isMainThread());

    // Most numbers used are <= 100. Even if they aren't used there's very little cost in using the space.
    const int kLowNumbers = 100;
    DEFINE_STATIC_LOCAL(Vector<AtomicString>, lowNumbers, (kLowNumbers + 1));
    String webCoreString;
    if (0 <= value && value <= kLowNumbers) {
        webCoreString = lowNumbers[value];
        if (!webCoreString) {
            AtomicString valueString = AtomicString(String::number(value));
            lowNumbers[value] = valueString;
            webCoreString = valueString;
        }
    } else
        webCoreString = String::number(value);
    return webCoreString;
}

String int32ToWebCoreString(int value)
{
    // If we are on the main thread (this should always true for non-workers), call the faster one.
    if (isMainThread())
        return int32ToWebCoreStringFast(value);
    return String::number(value);
}

String v8NonStringValueToWebCoreString(v8::Handle<v8::Value> object)
{
    ASSERT(!object->IsString());
    if (object->IsInt32())
        return int32ToWebCoreString(object->Int32Value());

    v8::TryCatch block;
    v8::Handle<v8::String> v8String = object->ToString();
    // Handle the case where an exception is thrown as part of invoking toString on the object.
    if (block.HasCaught()) {
        throwError(block.Exception());
        return StringImpl::empty();
    }
    // This path is unexpected.  However there is hypothesis that it
    // might be combination of v8 and v8 bindings bugs.  For now
    // just bailout as we'll crash if attempt to convert empty handle into a string.
    if (v8String.IsEmpty()) {
        ASSERT_NOT_REACHED();
        return StringImpl::empty();
    }
    return v8StringToWebCoreString<String>(v8String, DoNotExternalize);
}

AtomicString v8NonStringValueToAtomicWebCoreString(v8::Handle<v8::Value> object)
{
    ASSERT(!object->IsString());
    return AtomicString(v8NonStringValueToWebCoreString(object));
}

static v8::Local<v8::String> makeExternalString(const String& string)
{
    WebCoreStringResource* stringResource = new WebCoreStringResource(string);
    v8::Local<v8::String> newString = v8::String::NewExternal(stringResource);
    if (newString.IsEmpty())
        delete stringResource;

    return newString;
}

static void cachedStringCallback(v8::Persistent<v8::Value> wrapper, void* parameter)
{
    StringImpl* stringImpl = static_cast<StringImpl*>(parameter);
    V8BindingPerIsolateData::current()->stringCache()->remove(stringImpl);
    wrapper.Dispose();
    stringImpl->deref();
}

void StringCache::remove(StringImpl* stringImpl) 
{
    ASSERT(m_stringCache.contains(stringImpl));
    m_stringCache.remove(stringImpl);
}


v8::Local<v8::String> StringCache::v8ExternalStringSlow(StringImpl* stringImpl)
{
    if (!stringImpl->length())
        return v8::String::Empty();

    v8::String* cachedV8String = m_stringCache.get(stringImpl);
    if (cachedV8String) {
        v8::Persistent<v8::String> handle(cachedV8String);
        if (!handle.IsNearDeath() && !handle.IsEmpty()) {
            m_lastStringImpl = stringImpl;
            m_lastV8String = handle;
            return v8::Local<v8::String>::New(handle);
        }
    }

    v8::Local<v8::String> newString = makeExternalString(String(stringImpl));
    if (newString.IsEmpty())
        return newString;

    v8::Persistent<v8::String> wrapper = v8::Persistent<v8::String>::New(newString);
    if (wrapper.IsEmpty())
        return newString;

    stringImpl->ref();
    wrapper.MakeWeak(stringImpl, cachedStringCallback);
    m_stringCache.set(stringImpl, *wrapper);

    m_lastStringImpl = stringImpl;
    m_lastV8String = wrapper;

    return newString;
}
    
v8::Persistent<v8::FunctionTemplate> createRawTemplate()
{
    v8::HandleScope scope;
    v8::Local<v8::FunctionTemplate> result = v8::FunctionTemplate::New(V8Proxy::checkNewLegal);
    return v8::Persistent<v8::FunctionTemplate>::New(result);
}        

v8::Local<v8::Signature> configureTemplate(v8::Persistent<v8::FunctionTemplate> desc,
                                           const char *interfaceName,
                                           v8::Persistent<v8::FunctionTemplate> parentClass,
                                           int fieldCount,
                                           const BatchedAttribute* attributes, 
                                           size_t attributeCount,
                                           const BatchedCallback* callbacks,
                                           size_t callbackCount)
{
    desc->SetClassName(v8::String::New(interfaceName));
    v8::Local<v8::ObjectTemplate> instance = desc->InstanceTemplate();
    instance->SetInternalFieldCount(fieldCount);
    if (!parentClass.IsEmpty())
        desc->Inherit(parentClass);
    if (attributeCount)
        batchConfigureAttributes(instance, desc->PrototypeTemplate(),
                                 attributes, attributeCount);
    v8::Local<v8::Signature> defaultSignature = v8::Signature::New(desc);
    if (callbackCount)
        batchConfigureCallbacks(desc->PrototypeTemplate(),
                                defaultSignature,
                                static_cast<v8::PropertyAttribute>(v8::DontDelete),
                                callbacks, callbackCount);
    return defaultSignature;
}

v8::Persistent<v8::String> getToStringName()
{
    v8::Persistent<v8::String>& toStringName = V8BindingPerIsolateData::current()->toStringName();
    if (toStringName.IsEmpty())
        toStringName = v8::Persistent<v8::String>::New(v8::String::New("toString"));
    return *toStringName;

}

static v8::Handle<v8::Value> constructorToString(const v8::Arguments& args)
{
    // The DOM constructors' toString functions grab the current toString
    // for Functions by taking the toString function of itself and then
    // calling it with the constructor as its receiver. This means that
    // changes to the Function prototype chain or toString function are
    // reflected when printing DOM constructors. The only wart is that
    // changes to a DOM constructor's toString's toString will cause the
    // toString of the DOM constructor itself to change. This is extremely
    // obscure and unlikely to be a problem.
    v8::Handle<v8::Value> value = args.Callee()->Get(getToStringName());
    if (!value->IsFunction()) 
        return v8::String::New("");
    return v8::Handle<v8::Function>::Cast(value)->Call(args.This(), 0, 0);
}

v8::Persistent<v8::FunctionTemplate> getToStringTemplate()
{
    v8::Persistent<v8::FunctionTemplate>& toStringTemplate = V8BindingPerIsolateData::current()->toStringTemplate();
    if (toStringTemplate.IsEmpty())
        toStringTemplate = v8::Persistent<v8::FunctionTemplate>::New(v8::FunctionTemplate::New(constructorToString));
    return toStringTemplate;
}
    
v8::Handle<v8::Value> getElementStringAttr(const v8::AccessorInfo& info,
                                           const QualifiedName& name) 
{
    Element* imp = V8Element::toNative(info.Holder());
    return v8ExternalString(imp->getAttribute(name));
}

void setElementStringAttr(const v8::AccessorInfo& info,
                          const QualifiedName& name,
                          v8::Local<v8::Value> value)
{
    Element* imp = V8Element::toNative(info.Holder());
    AtomicString v = toAtomicWebCoreStringWithNullCheck(value);
    imp->setAttribute(name, v);
}

PassRefPtr<DOMStringList> v8ValueToWebCoreDOMStringList(v8::Handle<v8::Value> value)
{
    v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(value));
    if (!v8Value->IsArray())
        return 0;

    RefPtr<DOMStringList> ret = DOMStringList::create();
    v8::Local<v8::Array> v8Array = v8::Local<v8::Array>::Cast(v8Value);
    for (size_t i = 0; i < v8Array->Length(); ++i) {
        v8::Local<v8::Value> indexedValue = v8Array->Get(v8::Integer::New(i));
        ret->append(v8ValueToWebCoreString(indexedValue));
    }
    return ret.release();
}

} // namespace WebCore