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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_UntypedAtomicConverter_H
#define Patternist_UntypedAtomicConverter_H
#include "qitem_p.h"
#include "qsinglecontainer_p.h"
#include "qcastingplatform_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Casts every item in a sequence obtained from
* evaluating an Expression, to a requested atomic type.
*
* The atomic values it casts from are instances of xs:untypedAtomic(hence
* the name). Typically, the items are from an Atomizer. UntypedAtomicConverter
* implements the automatic conversion which typically is activated when XPath
* is handling untyped data.
*
* @see XML Path
* Language (XPath) 2.0, 3.1.5 Function Calls, in particular the
* Function Conversion Rules
* @author Frans Englich
* @ingroup Patternist_expressions
*/
class UntypedAtomicConverter : public SingleContainer,
public CastingPlatform
{
public:
UntypedAtomicConverter(const Expression::Ptr &operand,
const ItemType::Ptr &reqType,
const ReportContext::ErrorCode code = ReportContext::FORG0001);
virtual Item evaluateSingleton(const DynamicContext::Ptr &) const;
virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &) const;
virtual SequenceType::Ptr staticType() const;
virtual SequenceType::List expectedOperandTypes() const;
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
/**
* Overridden to call CastingPlatform::typeCheck()
*/
virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType);
inline Item mapToItem(const Item &item,
const DynamicContext::Ptr &context) const;
inline ItemType::Ptr targetType() const
{
return m_reqType;
}
virtual const SourceLocationReflection *actualReflection() const;
private:
typedef QExplicitlySharedDataPointer ConstPtr;
const ItemType::Ptr m_reqType;
};
Item UntypedAtomicConverter::mapToItem(const Item &item, const DynamicContext::Ptr &context) const
{
return cast(item, context);
}
}
QT_END_NAMESPACE
QT_END_HEADER
#endif