QPatternist::EmptySequenceType Class Reference

Represents the empty-sequence() type. More...

#include <qemptysequencetype_p.h>

Inheritance diagram for QPatternist::EmptySequenceType:

Public Types
typedef QExplicitlySharedDataPointer< EmptySequenceType >	Ptr
Public Types inherited from QPatternist::ItemType
enum	Category { NodeNameTest = 1, Other = 2 }
enum	InstanceOf { ClassLocalNameTest, ClassNamespaceNameTest, ClassQNameTest, ClassOther }
typedef QList< ItemType::Ptr >	List
typedef QExplicitlySharedDataPointer< ItemType >	Ptr
Public Types inherited from QPatternist::SequenceType
typedef QList< SequenceType::Ptr >	List
typedef QExplicitlySharedDataPointer< const SequenceType >	Ptr

Public Functions
virtual ItemType::Ptr	atomizedType () const
virtual Cardinality	cardinality () const
virtual QString	displayName (const NamePool::Ptr &np) const
virtual bool	isAtomicType () const
virtual bool	isNodeType () const
virtual bool	itemMatches (const Item &item) const
virtual ItemType::Ptr	itemType () const
virtual ItemType::Ptr	xdtSuperType () const
virtual bool	xdtTypeMatches (const ItemType::Ptr &other) const
Public Functions inherited from QPatternist::ItemType
virtual InstanceOf	instanceOf () const
	ItemType ()
virtual Category	itemTypeCategory () const
bool	operator!= (const ItemType &other) const
virtual bool	operator== (const ItemType &other) const
virtual const ItemType &	operator| (const ItemType &other) const
virtual	~ItemType ()
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::SequenceType
bool	is (const SequenceType::Ptr &other) const
bool	matches (const SequenceType::Ptr other) const
	SequenceType ()
virtual	~SequenceType ()

Protected Functions
	EmptySequenceType ()

Friends
class	CommonSequenceTypes

Additional Inherited Members
Public Variables inherited from QSharedData
QAtomicInt	ref
Related Functions inherited from QPatternist::ItemType
ItemType::Ptr	operator| (const ItemType::Ptr &op1, const ItemType::Ptr &op2)
void	operator|= (ItemType::Ptr &op1, const ItemType::Ptr &op2)
	Computes the union type of op1 and op2, and assigns it to op1. More...

Detailed Description

Represents the empty-sequence() type.

Author

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

Definition at line 71 of file qemptysequencetype_p.h.

Typedefs

Ptr

typedef QExplicitlySharedDataPointer<EmptySequenceType> QPatternist::EmptySequenceType::Ptr

Definition at line 75 of file qemptysequencetype_p.h.

Constructors and Destructors

EmptySequenceType()

EmptySequenceType::EmptySequenceType ( )

protected

Definition at line 51 of file qemptysequencetype.cpp.

{
}

Functions

atomizedType()

ItemType::Ptr EmptySequenceType::atomizedType ( ) const

virtual

Returns

always xs:anyAtomicType

Implements QPatternist::ItemType.

Definition at line 96 of file qemptysequencetype.cpp.

{
    return BuiltinTypes::xsAnyAtomicType;
}

cardinality()

Cardinality EmptySequenceType::cardinality ( ) const

virtual

Returns

always Cardinality::empty()

Implements QPatternist::SequenceType.

Definition at line 76 of file qemptysequencetype.cpp.

{
    return Cardinality::empty();
}

displayName()

QString EmptySequenceType::displayName ( const NamePool::Ptr &  np ) const

virtual

Returns

always "empty-sequence()"

Implements QPatternist::ItemType.

Definition at line 66 of file qemptysequencetype.cpp.

{
    return QLatin1String("empty-sequence()");
}

isAtomicType()

bool EmptySequenceType::isAtomicType ( ) const

virtual

Implements QPatternist::ItemType.

Definition at line 91 of file qemptysequencetype.cpp.

{
    return false;
}

isNodeType()

bool EmptySequenceType::isNodeType ( ) const

virtual

Implements QPatternist::ItemType.

Definition at line 86 of file qemptysequencetype.cpp.

{
    return false;
}

itemMatches()

bool EmptySequenceType::itemMatches ( const Item &  item ) const

virtual

Returns

always false

Implements QPatternist::ItemType.

Definition at line 61 of file qemptysequencetype.cpp.

{
    return false;
}

itemType()

ItemType::Ptr EmptySequenceType::itemType ( ) const

virtual

Returns

always 'this' since it is also an ItemType

Implements QPatternist::SequenceType.

Definition at line 81 of file qemptysequencetype.cpp.

{
    return ItemType::Ptr(const_cast<EmptySequenceType *>(this));
}

xdtSuperType()

ItemType::Ptr EmptySequenceType::xdtSuperType ( ) const

virtual

Determines the type's parent type in the XPath Data Model hierarchy. For example, for the type xs:anyAtomicType, the super type in the XPath Data Model is item(), not xs:anySimpleType. SchemaType::xdtSuperType navigates the schema hierarchy.

See also

SchemaType::wxsSuperType()

Returns

the type's super type.

Implements QPatternist::ItemType.

Definition at line 71 of file qemptysequencetype.cpp.

{
    return BuiltinTypes::item;
}

xdtTypeMatches()

bool EmptySequenceType::xdtTypeMatches ( const ItemType::Ptr &  other ) const

virtual

Possibly surprisingly, this function also returns true for the none type.

Returns

true if other is NoneType or EmptySequenceType, otherwise false.

Implements QPatternist::ItemType.

Definition at line 55 of file qemptysequencetype.cpp.

{
    return *other == *this ||
           CommonSequenceTypes::None->xdtTypeMatches(other);
}

Friends and Related Functions

CommonSequenceTypes

friend class CommonSequenceTypes

friend

Definition at line 115 of file qemptysequencetype_p.h.

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

• /src/xmlpatterns/type/qemptysequencetype_p.h
• /src/xmlpatterns/type/qemptysequencetype.cpp