Helper class for IdFN. More...

Inheritance diagram for StringSplitter:

Public Functions
virtual QString	current () const
	Returns the current item in the sequence. More...

virtual QString	next ()
	Returns the next item in the sequence, or a null object if the end has been reached. More...

virtual qint64	position () const
	Returns the current position in the sequence represented by this. More...

	StringSplitter (const Item::Iterator::Ptr &source)

Public Functions inherited from QAbstractXmlForwardIterator< QString >
virtual QAbstractXmlForwardIterator< QString >::Ptr	copy () const
	Copies this QAbstractXmlForwardIterator and returns the copy. More...

virtual qint64	count ()
	Determines the number of items this QAbstractXmlForwardIterator represents. More...

virtual bool	isEmpty ()
	Returns true if the sequence is empty. More...

virtual QString	last ()
	Returns the item at the end of this QAbstractXmlForwardIterator. More...

	QAbstractXmlForwardIterator ()
	Default constructor. More...

virtual qint64	sizeHint () const
	Gives a hint to the size of the contained sequence. More...

virtual QList< QString >	toList ()
	Performs a copy of this QAbstractXmlForwardIterator(with copy()), and returns its items in a QList. More...

virtual QAbstractXmlForwardIterator< QString >::Ptr	toReversed ()
	Returns a reverse iterator for the sequence. More...

virtual	~QAbstractXmlForwardIterator ()
	Destructor. More...

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...

Private Functions
QString	loadNext ()

Properties
QStack< QString >	m_buffer

QString	m_current

qint64	m_position

const Item::Iterator::Ptr	m_source

bool	m_sourceAtEnd

Related Functions
(Note that these are not member functions.)
template<>
bool	qIsForwardIteratorEnd (const QString &unit)
	Helper class for StringSplitter. More...

Related Functions inherited from QAbstractXmlForwardIterator< QString >
static QAbstractXmlForwardIterator< TResult >::Ptr	makeSequenceMappingIterator (const TMapper &mapper, const QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< TSource > > &source, const DynamicContext::Ptr &context)
	An object generator for SequenceMappingIterator. More...

bool	qIsForwardIteratorEnd (const QString &unit)
	The Callback QAbstractXmlForwardIterator uses for determining whether unit is the end of a sequence. More...

Additional Inherited Members
Public Types inherited from QAbstractXmlForwardIterator< QString >
typedef QList< QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< QString > > >	List
	A QList containing QAbstractXmlForwardIterator::Ptr instances. More...

typedef QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< QString > >	Ptr
	A smart pointer wrapping an instance of a QAbstractXmlForwardIterator subclass. More...

typedef QVector< QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< QString > > >	Vector
	A QVector containing QAbstractXmlForwardIterator::Ptr instances. More...

Public Variables inherited from QSharedData
QAtomicInt	ref

Detailed Description

Helper class for IdFN.

StringSplitter takes an Iterator which delivers strings of this kind:

"a", "b c", "%invalidNCName", " ", "d"

and we deliver instead:

"a", "b", "c", "d"

That is, we:

Remove invalid NCName
Split IDREFs into individual NCNames

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

Definition at line 89 of file qsequencegeneratingfns.cpp.

Constructors and Destructors

◆ StringSplitter()

StringSplitter::StringSplitter ( const Item::Iterator::Ptr & source )

Definition at line 105 of file qsequencegeneratingfns.cpp.

Referenced by QPatternist::IdFN::evaluateSequence().

                                                             : m_source(source)
                                                                   , m_position(0)
                                                                   , m_sourceAtEnd(false)
 {
     Q_ASSERT(m_source);
     m_buffer.push(loadNext());
 }

Functions

◆ current()

QString StringSplitter::current ( ) const

virtual

Returns the current item in the sequence.

If this function is called before the first call to next(), a null object is returned. If the end of the sequence has been reached, a null object is returned.

Implements QAbstractXmlForwardIterator< QString >.

Definition at line 158 of file qsequencegeneratingfns.cpp.

 {
     return m_current;
 }

◆ loadNext()

QString StringSplitter::loadNext ( )

private

Definition at line 132 of file qsequencegeneratingfns.cpp.

Referenced by next(), and StringSplitter().

 {
     const Item sourceNext(m_source->next());
 
     if(sourceNext.isNull())
     {
         m_sourceAtEnd = true;
         /* We might have strings in m_buffer, let's empty it. */
         return next();
     }
 
     const QStringList candidates(sourceNext.stringValue().simplified().split(QLatin1Char(' ')));
     const int count = candidates.length();
 
     for(int i = 0; i < count; ++i)
     {
         const QString &at = candidates.at(i);
 
         if(QXmlUtils::isNCName(at))
             m_buffer.push(at);
     }
 
     /* So, now we have populated m_buffer, let's start from the beginning. */
     return next();
 }

◆ next()

QString StringSplitter::next ( )

virtual

Returns the next item in the sequence, or a null object if the end has been reached.

Implements QAbstractXmlForwardIterator< QString >.

Definition at line 113 of file qsequencegeneratingfns.cpp.

Referenced by loadNext().

 {
     /* We also check m_position, we want to load on our first run. */
     if(!m_buffer.isEmpty())
     {
         ++m_position;
         m_current = m_buffer.pop();
         return m_current;
     }
     else if(m_sourceAtEnd)
     {
         m_current.clear();
         m_position = -1;
         return QString();
     }
 
     return loadNext();
 }