QPatternist::NumericToDecimalCaster< IsInteger > Class Template Reference

Casts a numeric value, such as xs:double or xs:decimal, to xs:integer or xs:decimal, depending on IsInteger. More...

#include <qatomiccasters_p.h>

Inheritance diagram for QPatternist::NumericToDecimalCaster< IsInteger >:

Public Functions
virtual Item	castFrom (const Item &from, const QExplicitlySharedDataPointer< DynamicContext > &context) const
Public Functions inherited from QPatternist::AtomicCaster
	AtomicCaster ()
virtual	~AtomicCaster ()
Public Functions inherited from QPatternist::AtomicTypeVisitorResult
	AtomicTypeVisitorResult ()
virtual	~AtomicTypeVisitorResult ()
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...

Static Public Functions
static QString	errorMessage ()

Additional Inherited Members
Public Types inherited from QPatternist::AtomicCaster
typedef QExplicitlySharedDataPointer< AtomicCaster >	Ptr
Public Types inherited from QPatternist::AtomicTypeVisitorResult
typedef QExplicitlySharedDataPointer< AtomicTypeVisitorResult >	Ptr
Public Variables inherited from QSharedData
QAtomicInt	ref

Detailed Description

template<const bool IsInteger>
class QPatternist::NumericToDecimalCaster< IsInteger >

Casts a numeric value, such as xs:double or xs:decimal, to xs:integer or xs:decimal, depending on IsInteger.

castFrom() uses Numeric::toInteger() for doing the actual casting.

Author

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

Definition at line 215 of file qatomiccasters_p.h.

Functions

castFrom()

template<const bool IsInteger>

virtual Item QPatternist::NumericToDecimalCaster< IsInteger >::castFrom ( const Item &  from, const QExplicitlySharedDataPointer< DynamicContext > &  context  ) const

inlinevirtual

Casts from to an atomic value of the type this class casts to, and returns that value. The context is used for reporting errors in case the casting fails, and to in general access information from the dynamic context.

Implements QPatternist::AtomicCaster.

Definition at line 226 of file qatomiccasters_p.h.

        {
            const ItemType::Ptr t(from.type());
            const Numeric *const num = from.template as<Numeric>();

            if(BuiltinTypes::xsDouble->xdtTypeMatches(t) || BuiltinTypes::xsFloat->xdtTypeMatches(t))
            {
                if(num->isInf() || num->isNaN())
                {
                    return ValidationError::createError(errorMessage()
                                                        .arg(formatType(context->namePool(), IsInteger ? BuiltinTypes::xsInteger : BuiltinTypes::xsDecimal))
                                                        .arg(formatType(context->namePool(), t))
                                                        .arg(formatData(num->stringValue())),
                                                        ReportContext::FOCA0002);
                }
            }

            if(IsInteger)
                return Integer::fromValue(num->toInteger());
            else
                return toItem(Decimal::fromValue(num->toDecimal()));
        }

errorMessage()

template<const bool IsInteger>

static QString QPatternist::NumericToDecimalCaster< IsInteger >::errorMessage ( )

inlinestatic

Used by NumericToDerivedIntegerCaster in addition to this class.

Definition at line 221 of file qatomiccasters_p.h.

        {
            return QtXmlPatterns::tr("When casting to %1 from %2, the source value cannot be %3.");
        }

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

• /src/xmlpatterns/data/qatomiccasters_p.h