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

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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

**

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

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** No Commercial Usage

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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**

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** $QT_END_LICENSE$

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

#include "qbuiltintypes_p.h"

#include "qitem_p.h"

#include "qvalidationerror_p.h"

#include "qinteger_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

Item Integer::fromValue(const xsInteger num)

{

    return toItem(Integer::Ptr(new Integer(num)));

}

AtomicValue::Ptr Integer::fromLexical(const QString &strNumeric)

{

    bool conversionOk = false;

    const xsInteger num = strNumeric.toLongLong(&conversionOk);

    if(conversionOk)

        return AtomicValue::Ptr(new Integer(num));

    else

        return ValidationError::createError();

}

Integer::Integer(const xsInteger num) : m_value(num)

{

}

bool Integer::evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const

{

    return m_value != 0;

}

QString Integer::stringValue() const

{

    return QString::number(m_value);

}

ItemType::Ptr Integer::type() const

{

    return BuiltinTypes::xsInteger;

}

xsDouble Integer::toDouble() const

{

    return static_cast<xsDouble>(m_value);

}

xsInteger Integer::toInteger() const

{

    return m_value;

}

xsFloat Integer::toFloat() const

{

    return static_cast<xsFloat>(m_value);

}

xsDecimal Integer::toDecimal() const

{

    return static_cast<xsDecimal>(m_value);

}

Numeric::Ptr Integer::round() const

{

    /* xs:integerS never has a mantissa. */

    return Numeric::Ptr(const_cast<Integer *>(this));

}

Numeric::Ptr Integer::roundHalfToEven(const xsInteger /*scale*/) const

{

    return Numeric::Ptr(const_cast<Integer *>(this));

}

Numeric::Ptr Integer::floor() const

{

    return Numeric::Ptr(const_cast<Integer *>(this));

}

Numeric::Ptr Integer::ceiling() const

{

    return Numeric::Ptr(const_cast<Integer *>(this));

}

Numeric::Ptr Integer::abs() const

{

    /* No reason to allocate an Integer if we're already absolute. */

    if(m_value < 0)

        return Numeric::Ptr(new Integer(qAbs(m_value)));

    else

        return Numeric::Ptr(const_cast<Integer *>(this));

}

bool Integer::isNaN() const

{

    return false;

}

bool Integer::isInf() const

{

    return false;

}

Item Integer::toNegated() const

{

    return fromValue(-m_value);

}

bool Integer::isSigned() const

{

    return true;

}

qulonglong Integer::toUnsignedInteger() const

{

    Q_ASSERT_X(false, Q_FUNC_INFO,

               "It makes no sense to call this function, see Numeric::toUnsignedInteger().");

    return 0;

}

QT_END_NAMESPACE