Qt 4.8
qattributeconstructor.cpp
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41 
42 #include <QUrl>
43 
44 #include "qcommonsequencetypes_p.h"
45 #include "qnodebuilder_p.h"
46 #include "qqnamevalue_p.h"
47 
49 
51 
52 using namespace QPatternist;
53 
55  const Expression::Ptr &op2) : PairContainer(op1, op2)
56 {
57 }
58 
60  const Item &value)
61 {
62  if(!value)
63  return QString();
65  return value.stringValue().simplified();
66  else
67  return value.stringValue();
68 }
69 
71 {
72  const Item nameItem(m_operand1->evaluateSingleton(context));
73  const Item content(m_operand2->evaluateSingleton(context));
74 
75  const QXmlName name(nameItem.as<QNameValue>()->qName());
76  const QString value(processValue(name, content));
77  const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));
78 
79  nodeBuilder->attribute(name, QStringRef(&value));
80 
81  const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
82  context->addNodeModel(nm);
83  return nm->root(QXmlNodeModelIndex());
84 }
85 
87 {
88  QAbstractXmlReceiver *const receiver = context->outputReceiver();
89  const Item nameItem(m_operand1->evaluateSingleton(context));
90 
91  const Item content(m_operand2->evaluateSingleton(context));
92  const QXmlName name(nameItem.as<QNameValue>()->qName());
93  const QString value(processValue(name, content));
94 
95  receiver->attribute(name, QStringRef(&value));
96 }
97 
99 {
101 }
102 
104 {
105  SequenceType::List result;
108  return result;
109 }
110 
112 {
114 }
115 
118 {
119  return visitor->visit(this);
120 }
121 
123 {
124  return IDAttributeConstructor;
125 }
126 
virtual SequenceType::Ptr staticType() const
The QXmlNodeModelIndex class identifies a node in an XML node model subclassed from QAbstractXmlNodeM...
virtual void addNodeModel(const QAbstractXmlNodeModel::Ptr &nm)=0
A push interface for the XPath Data Model. Similar to SAX&#39;s ContentHandler.
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
static const SequenceType::Ptr ZeroOrMoreItems
static const SequenceType::Ptr ExactlyOneQName
The QUrl class provides a convenient interface for working with URLs.
Definition: qurl.h:61
The QString class provides a Unicode character string.
Definition: qstring.h:83
virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
void append(const T &t)
Inserts value at the end of the list.
Definition: qlist.h:507
QXmlName qName() const
Definition: qqnamevalue_p.h:96
static const SequenceType::Ptr ExactlyOneAttribute
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const
const char * name
The namespace for the internal API of QtXmlPatterns.
QString stringValue() const
Returns the string value of this Item.
Definition: qitem_p.h:302
static QString processValue(const QXmlName name, const Item &value)
virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const
The QStringRef class provides a thin wrapper around QString substrings.
Definition: qstring.h:1099
virtual SequenceType::List expectedOperandTypes() const
The QXmlName class represents the name of an XML node, in an efficient, namespace-aware way...
Definition: qxmlname.h:58
Represents an item in the XPath 2.0 Data Model.
Definition: qitem_p.h:182
QString simplified() const Q_REQUIRED_RESULT
Returns a string that has whitespace removed from the start and the end, and that has each sequence o...
Definition: qstring.cpp:4415
Implements the value instance of the xs:QName type.
Definition: qqnamevalue_p.h:73
virtual NodeBuilder::Ptr nodeBuilder(const QUrl &baseURI) const =0
The QFlags class provides a type-safe way of storing OR-combinations of enum values.
Definition: qglobal.h:2313
virtual QAbstractXmlReceiver * outputReceiver() const =0
virtual void attribute(const QXmlName name, const QString &value)=0
Signals the presence of an attribute node.
virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const
The QList class is a template class that provides lists.
Definition: qdatastream.h:62
AttributeConstructor(const Expression::Ptr &operand1, const Expression::Ptr &operand2)
Base class for expressions that has exactly two operands.