/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtScript module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL-ONLY$

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

** $QT_END_LICENSE$

**

****************************************************************************/

#include "config.h"

#include "qscriptvariant_p.h"

#include "../api/qscriptengine.h"

#include "../api/qscriptengine_p.h"

#include "Error.h"

#include "PrototypeFunction.h"

#include "JSString.h"

namespace JSC

{

QT_USE_NAMESPACE

ASSERT_CLASS_FITS_IN_CELL(QScript::QVariantPrototype);

}

QT_BEGIN_NAMESPACE

namespace QScript

{

QVariantDelegate::QVariantDelegate(const QVariant &value)

    : m_value(value)

{

}

QVariantDelegate::~QVariantDelegate()

{

}

QVariant &QVariantDelegate::value()

{

    return m_value;

}

void QVariantDelegate::setValue(const QVariant &value)

{

    m_value = value;

}

QScriptObjectDelegate::Type QVariantDelegate::type() const

{

    return Variant;

}

static JSC::JSValue JSC_HOST_CALL variantProtoFuncValueOf(JSC::ExecState *exec, JSC::JSObject*,

                                                          JSC::JSValue thisValue, const JSC::ArgList&)

{

    QScriptEnginePrivate *engine = scriptEngineFromExec(exec);

    thisValue = engine->toUsableValue(thisValue);

    if (!thisValue.inherits(&QScriptObject::info))

        return throwError(exec, JSC::TypeError);

    QScriptObjectDelegate *delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();

    if (!delegate || (delegate->type() != QScriptObjectDelegate::Variant))

        return throwError(exec, JSC::TypeError);

    const QVariant &v = static_cast<QVariantDelegate*>(delegate)->value();

    switch (v.type()) {

    case QVariant::Invalid:

        return JSC::jsUndefined();

    case QVariant::String:

        return JSC::jsString(exec, v.toString());

    case QVariant::Int:

        return JSC::jsNumber(exec, v.toInt());

    case QVariant::Bool:

        return JSC::jsBoolean(v.toBool());

    case QVariant::Double:

        return JSC::jsNumber(exec, v.toDouble());

//    case QVariant::Char:

//        return JSC::jsNumber(exec, v.toChar().unicode());

    case QVariant::UInt:

        return JSC::jsNumber(exec, v.toUInt());

    default:

        ;

    }

    return thisValue;

}

static JSC::JSValue JSC_HOST_CALL variantProtoFuncToString(JSC::ExecState *exec, JSC::JSObject *callee,

                                                           JSC::JSValue thisValue, const JSC::ArgList &args)

{

    QScriptEnginePrivate *engine = scriptEngineFromExec(exec);

    thisValue = engine->toUsableValue(thisValue);

    if (!thisValue.inherits(&QScriptObject::info))

        return throwError(exec, JSC::TypeError, "This object is not a QVariant");

    QScriptObjectDelegate *delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();

    if (!delegate || (delegate->type() != QScriptObjectDelegate::Variant))

        return throwError(exec, JSC::TypeError, "This object is not a QVariant");

    const QVariant &v = static_cast<QVariantDelegate*>(delegate)->value();

    JSC::UString result;

    JSC::JSValue value = variantProtoFuncValueOf(exec, callee, thisValue, args);

    if (value.isObject()) {

        result = v.toString();

        if (result.isEmpty() && !v.canConvert(QVariant::String)) {

            result = "QVariant(";

            result += v.typeName();

            result += ")";

        }

    } else {

        result = value.toString(exec);

    }

    return JSC::jsString(exec, result);

}

bool QVariantDelegate::compareToObject(QScriptObject *, JSC::ExecState *exec, JSC::JSObject *o2)

{

    const QVariant &variant1 = value();

    return variant1 == scriptEngineFromExec(exec)->scriptValueFromJSCValue(o2).toVariant();

}

QVariantPrototype::QVariantPrototype(JSC::ExecState* exec, WTF::PassRefPtr<JSC::Structure> structure,

                                     JSC::Structure* prototypeFunctionStructure)

    : QScriptObject(structure)

{

    setDelegate(new QVariantDelegate(QVariant()));

    putDirectFunction(exec, new (exec) JSC::PrototypeFunction(exec, prototypeFunctionStructure, 0, exec->propertyNames().toString, variantProtoFuncToString), JSC::DontEnum);

    putDirectFunction(exec, new (exec) JSC::PrototypeFunction(exec, prototypeFunctionStructure, 0, exec->propertyNames().valueOf, variantProtoFuncValueOf), JSC::DontEnum);

}

} // namespace QScript

QT_END_NAMESPACE