src/xmlpatterns/data/qinteger_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 //
       
    43 //  W A R N I N G
       
    44 //  -------------
       
    45 //
       
    46 // This file is not part of the Qt API.  It exists purely as an
       
    47 // implementation detail.  This header file may change from version to
       
    48 // version without notice, or even be removed.
       
    49 //
       
    50 // We mean it.
       
    51 
       
    52 #ifndef Patternist_Integer_H
       
    53 #define Patternist_Integer_H
       
    54 
       
    55 #include "qschemanumeric_p.h"
       
    56 
       
    57 QT_BEGIN_HEADER
       
    58 
       
    59 QT_BEGIN_NAMESPACE
       
    60 
       
    61 namespace QPatternist
       
    62 {
       
    63     /**
       
    64      * @short Implements the value instance of the @c xs:integer type.
       
    65      *
       
    66      * @author Frans Englich <frans.englich@nokia.com>
       
    67      * @ingroup Patternist_xdm
       
    68      * @todo Documentation is missing
       
    69      */
       
    70     class Integer : public Numeric
       
    71     {
       
    72     public:
       
    73 
       
    74         typedef Numeric::Ptr Ptr;
       
    75 
       
    76         /**
       
    77          * Constructs an instance from the lexical
       
    78          * representation @p strNumeric.
       
    79          *
       
    80          * @todo Type error handling.
       
    81          */
       
    82         static AtomicValue::Ptr fromLexical(const QString &strNumeric);
       
    83 
       
    84         static Item fromValue(const xsInteger num);
       
    85 
       
    86         /**
       
    87          * Determines the Effective %Boolean Value of this number.
       
    88          *
       
    89          * @returns @c false if the number is 0, otherwise @c true.
       
    90          */
       
    91         bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
       
    92 
       
    93         virtual QString stringValue() const;
       
    94 
       
    95         /**
       
    96          * @returns always BuiltinTypes::xsInteger
       
    97          */
       
    98         virtual ItemType::Ptr type() const;
       
    99 
       
   100         virtual xsDouble toDouble() const;
       
   101         virtual xsInteger toInteger() const;
       
   102         virtual xsFloat toFloat() const;
       
   103         virtual xsDecimal toDecimal() const;
       
   104 
       
   105         virtual Numeric::Ptr round() const;
       
   106         virtual Numeric::Ptr roundHalfToEven(const xsInteger scale) const;
       
   107         virtual Numeric::Ptr floor() const;
       
   108         virtual Numeric::Ptr ceiling() const;
       
   109         virtual Numeric::Ptr abs() const;
       
   110         virtual qulonglong toUnsignedInteger() const;
       
   111 
       
   112         /**
       
   113          * @returns always @c false, @c xs:integer doesn't have
       
   114          * not-a-number in its value space.
       
   115          */
       
   116         virtual bool isNaN() const;
       
   117 
       
   118         /**
       
   119          * @returns always @c false, @c xs:integer doesn't have
       
   120          * infinity in its value space.
       
   121          */
       
   122         virtual bool isInf() const;
       
   123         virtual Item toNegated() const;
       
   124 
       
   125         /**
       
   126          * @short Returns always @c true.
       
   127          */
       
   128         virtual bool isSigned() const;
       
   129     protected:
       
   130         Integer(const xsInteger num);
       
   131 
       
   132     private:
       
   133         const xsInteger m_value;
       
   134     };
       
   135 }
       
   136 
       
   137 QT_END_NAMESPACE
       
   138 
       
   139 QT_END_HEADER
       
   140 
       
   141 #endif