QPatternist::Integer Class Reference

Implements the value instance of the xs:integer type. More...

#include <qinteger_p.h>

Inheritance diagram for QPatternist::Integer:

Public Types
typedef Numeric::Ptr	Ptr
Public Types inherited from QPatternist::Numeric
typedef QExplicitlySharedDataPointer< Numeric >	Ptr
Public Types inherited from QPatternist::AtomicValue
typedef QList< AtomicValue::Ptr >	List
typedef QExplicitlySharedDataPointer< AtomicValue >	Ptr

Public Functions
virtual Numeric::Ptr	abs () const
virtual Numeric::Ptr	ceiling () const
bool	evaluateEBV (const QExplicitlySharedDataPointer< DynamicContext > &) const
virtual Numeric::Ptr	floor () const
virtual bool	isInf () const
virtual bool	isNaN () const
virtual bool	isSigned () const
	Returns always true. More...
virtual Numeric::Ptr	round () const
virtual Numeric::Ptr	roundHalfToEven (const xsInteger scale) const
virtual QString	stringValue () const
virtual xsDecimal	toDecimal () const
virtual xsDouble	toDouble () const
virtual xsFloat	toFloat () const
virtual xsInteger	toInteger () const
virtual Item	toNegated () const
virtual qulonglong	toUnsignedInteger () const
virtual ItemType::Ptr	type () const
Public Functions inherited from QPatternist::AtomicValue
virtual bool	hasError () const
virtual	~AtomicValue ()
Public Functions inherited from QSharedData
	QSharedData ()
	Constructs a QSharedData object with a reference count of 0. More...
	QSharedData (const QSharedData &)
	Constructs a QSharedData object with reference count 0. More...
Public Functions inherited from QPatternist::CppCastingHelper< AtomicValue >
const TCastTarget *	as () const
TCastTarget *	as ()

Static Public Functions
static AtomicValue::Ptr	fromLexical (const QString &strNumeric)
static Item	fromValue (const xsInteger num)
Static Public Functions inherited from QPatternist::Numeric
static AtomicValue::Ptr	fromLexical (const QString &number)
Static Public Functions inherited from QPatternist::AtomicValue
static ItemType::Ptr	qtToXDMType (const QXmlItem &item)
static QVariant	toQt (const AtomicValue *const value)
static QVariant	toQt (const AtomicValue::Ptr &value)
static Item	toXDM (const QVariant &value)

Protected Functions
	Integer (const xsInteger num)
Protected Functions inherited from QPatternist::AtomicValue
	AtomicValue ()
Protected Functions inherited from QPatternist::CppCastingHelper< AtomicValue >
	CppCastingHelper ()

Properties
const xsInteger	m_value

Additional Inherited Members
Public Variables inherited from QSharedData
QAtomicInt	ref
Static Protected Functions inherited from QPatternist::Numeric
static xsDouble	roundFloat (const xsDouble val)
	Implements fn:round() for types implemented with floating point. More...

Detailed Description

Implements the value instance of the xs:integer type.

Author

Frans Englich frans.nosp@m..eng.nosp@m.lich@.nosp@m.noki.nosp@m.a.com

Definition at line 70 of file qinteger_p.h.

Typedefs

Ptr

typedef Numeric::Ptr QPatternist::Integer::Ptr

Definition at line 74 of file qinteger_p.h.

Constructors and Destructors

Integer()

Integer::Integer ( const xsInteger  num )

protected

Definition at line 68 of file qinteger.cpp.

Referenced by abs(), fromLexical(), and fromValue().

                                    : m_value(num)
{
}

Functions

abs()

Numeric::Ptr Integer::abs ( ) const

virtual

Performs the algorithm specified for the function fn:abs on this Numeric, and whose result is returned.

See also

XQuery 1.0 and XPath 2.0 Functions and Operators, 6.4.1 fn:abs

Implements QPatternist::Numeric.

Definition at line 128 of file qinteger.cpp.

{
    /* 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));
}

ceiling()

Numeric::Ptr Integer::ceiling ( ) const

virtual

Performs the algorithm specified for the function fn:ceiling on this Numeric, and whose result is returned.

See also

XQuery 1.0 and XPath 2.0 Functions and Operators, 6.4.2 fn:ceiling

Implements QPatternist::Numeric.

Definition at line 123 of file qinteger.cpp.

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

evaluateEBV()

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

virtual

Determines the Effective Boolean Value of this number.

Returns

false if the number is 0, otherwise true.

Reimplemented from QPatternist::AtomicValue.

Definition at line 72 of file qinteger.cpp.

{
    return m_value != 0;
}

floor()

Numeric::Ptr Integer::floor ( ) const

virtual

Performs the algorithm specified for the function fn:floor on this Numeric, and whose result is returned.

See also

XQuery 1.0 and XPath 2.0 Functions and Operators, 6.4.3 fn:floor

Implements QPatternist::Numeric.

Definition at line 118 of file qinteger.cpp.

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

fromLexical()

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

static

Constructs an instance from the lexical representation strNumeric.

Definition at line 57 of file qinteger.cpp.

Referenced by QPatternist::StringToIntegerCaster::castFrom(), and QPatternist::Numeric::fromLexical().

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

    if(conversionOk)
        return AtomicValue::Ptr(new Integer(num));
    else
        return ValidationError::createError();
}

fromValue()

Item Integer::fromValue ( const xsInteger  num )

static

Definition at line 52 of file qinteger.cpp.

Referenced by QPatternist::DerivedInteger< DerivedType >::abs(), QPatternist::DecimalMathematician::calculate(), QPatternist::IntegerMathematician::calculate(), QPatternist::NumericToDecimalCaster< IsInteger >::castFrom(), QPatternist::DerivedInteger< DerivedType >::ceiling(), QPatternist::CountFN::compress(), QPatternist::PositionalVariableReference::evaluateSingleton(), QPatternist::PositionFN::evaluateSingleton(), QPatternist::CountFN::evaluateSingleton(), QPatternist::LastFN::evaluateSingleton(), QPatternist::AvgFN::evaluateSingleton(), QPatternist::StringLengthFN::evaluateSingleton(), QPatternist::DerivedInteger< DerivedType >::floor(), QPatternist::ToCodepointsIterator::next(), QPatternist::IndexOfIterator::next(), QPatternist::RangeIterator::next(), QPatternist::DerivedInteger< DerivedType >::round(), QPatternist::DerivedInteger< DerivedType >::roundHalfToEven(), toNegated(), QPatternist::DerivedInteger< DerivedType >::toNegated(), and QPatternist::AtomicValue::toXDM().

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

isInf()

bool Integer::isInf ( ) const

virtual

Returns

always false, xs:integer doesn't have infinity in its value space.

Implements QPatternist::Numeric.

Definition at line 142 of file qinteger.cpp.

{
    return false;
}

isNaN()

bool Integer::isNaN ( ) const

virtual

Returns

always false, xs:integer doesn't have not-a-number in its value space.

Implements QPatternist::Numeric.

Definition at line 137 of file qinteger.cpp.

{
    return false;
}

isSigned()

bool Integer::isSigned ( ) const

virtual

Returns always true.

Implements QPatternist::Numeric.

Definition at line 152 of file qinteger.cpp.

{
    return true;
}

round()

Numeric::Ptr Integer::round ( ) const

virtual

Performs the algorithm specified for the function fn:round on this Numeric, and whose result is returned.

See also

XQuery 1.0 and XPath 2.0 Functions and Operators, 6.4.4 fn:round

Implements QPatternist::Numeric.

Definition at line 107 of file qinteger.cpp.

{
    /* xs:integerS never has a mantissa. */
    return Numeric::Ptr(const_cast<Integer *>(this));
}

roundHalfToEven()

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

virtual

Performs rounding as defined for the fn:round-half-to-even on this Numeric, and whose result is returned.

See also

XQuery 1.0 and XPath 2.0 Functions and Operators, 6.4.5 fn:round-half-to-even

Implements QPatternist::Numeric.

Definition at line 113 of file qinteger.cpp.

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

stringValue()

QString Integer::stringValue ( ) const

virtual

Implements QPatternist::AtomicValue.

Definition at line 77 of file qinteger.cpp.

{
    return QString::number(m_value);
}

toDecimal()

xsDecimal Integer::toDecimal ( ) const

virtual

Returns

the particular number's value as a native representation of the type xs:decimal. This can be considered that the value is cast to xs:decimal.

Implements QPatternist::Numeric.

Definition at line 102 of file qinteger.cpp.

{
    return static_cast<xsDecimal>(m_value);
}

toDouble()

xsDouble Integer::toDouble ( ) const

virtual

Returns

the particular number's value as a native representation of the type xs:double. This can be considered that the value is cast to xs:double.

Implements QPatternist::Numeric.

Definition at line 87 of file qinteger.cpp.

{
    return static_cast<xsDouble>(m_value);
}

toFloat()

xsFloat Integer::toFloat ( ) const

virtual

Returns

the particular number's value as a native representation of the type xs:float. This can be considered that the value is cast to xs:float.

Implements QPatternist::Numeric.

Definition at line 97 of file qinteger.cpp.

{
    return static_cast<xsFloat>(m_value);
}

toInteger()

xsInteger Integer::toInteger ( ) const

virtual

Returns

the particular number's value as a native representation of the type xs:integer. This can be considered that the value is cast to xs:integer.

Implements QPatternist::Numeric.

Definition at line 92 of file qinteger.cpp.

{
    return m_value;
}

toNegated()

Item Integer::toNegated ( ) const

virtual

Unary minus.

Implements QPatternist::Numeric.

Definition at line 147 of file qinteger.cpp.

{
    return fromValue(-m_value);
}

toUnsignedInteger()

qulonglong Integer::toUnsignedInteger ( ) const

virtual

Returns

the number as an unsigned integer. If the value is not unsigned, the code asserts and behavior is undefined.

Implements QPatternist::Numeric.

Definition at line 157 of file qinteger.cpp.

{
    Q_ASSERT_X(false, Q_FUNC_INFO,
               "It makes no sense to call this function, see Numeric::toUnsignedInteger().");
    return 0;
}

type()

ItemType::Ptr Integer::type ( ) const

virtual

Returns

always BuiltinTypes::xsInteger

Implements QPatternist::AtomicValue.

Definition at line 82 of file qinteger.cpp.

{
    return BuiltinTypes::xsInteger;
}

Properties

m_value

const xsInteger QPatternist::Integer::m_value

private

Definition at line 133 of file qinteger_p.h.

Referenced by abs(), evaluateEBV(), stringValue(), toDecimal(), toDouble(), toFloat(), toInteger(), and toNegated().

---

The documentation for this class was generated from the following files:

• /src/xmlpatterns/data/qinteger_p.h
• /src/xmlpatterns/data/qinteger.cpp