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//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

#ifndef Patternist_Integer_H

#define Patternist_Integer_H

#include "qschemanumeric_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist

{

    /**

     * @short Implements the value instance of the @c xs:integer type.

     *

     * @author Frans Englich <frans.englich@nokia.com>

     * @ingroup Patternist_xdm

     * @todo Documentation is missing

     */

    class Integer : public Numeric

    {

    public:

        typedef Numeric::Ptr Ptr;

        /**

         * Constructs an instance from the lexical

         * representation @p strNumeric.

         *

         * @todo Type error handling.

         */

        static AtomicValue::Ptr fromLexical(const QString &strNumeric);

        static Item fromValue(const xsInteger num);

        /**

         * Determines the Effective %Boolean Value of this number.

         *

         * @returns @c false if the number is 0, otherwise @c true.

         */

        bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;

        virtual QString stringValue() const;

        /**

         * @returns always BuiltinTypes::xsInteger

         */

        virtual ItemType::Ptr type() const;

        virtual xsDouble toDouble() const;

        virtual xsInteger toInteger() const;

        virtual xsFloat toFloat() const;

        virtual xsDecimal toDecimal() const;

        virtual Numeric::Ptr round() const;

        virtual Numeric::Ptr roundHalfToEven(const xsInteger scale) const;

        virtual Numeric::Ptr floor() const;

        virtual Numeric::Ptr ceiling() const;

        virtual Numeric::Ptr abs() const;

        virtual qulonglong toUnsignedInteger() const;

        /**

         * @returns always @c false, @c xs:integer doesn't have

         * not-a-number in its value space.

         */

        virtual bool isNaN() const;

        /**

         * @returns always @c false, @c xs:integer doesn't have

         * infinity in its value space.

         */

        virtual bool isInf() const;

        virtual Item toNegated() const;

        /**

         * @short Returns always @c true.

         */

        virtual bool isSigned() const;

    protected:

        Integer(const xsInteger num);

    private:

        const xsInteger m_value;

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif