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39
40#include <QUrl>
41
42#include "qcommonsequencetypes_p.h"
43#include "qnodebuilder_p.h"
44#include "qqnamevalue_p.h"
45
46#include "qattributeconstructor_p.h"
47
48QT_BEGIN_NAMESPACE
49
50using namespace QPatternist;
51
52AttributeConstructor::AttributeConstructor(const Expression::Ptr &op1,
53 const Expression::Ptr &op2) : PairContainer(op1, op2)
54{
55}
56
57QString AttributeConstructor::processValue(const QXmlName name,
58 const Item &value)
59{
60 if(!value)
61 return QString();
62 else if(name == QXmlName(StandardNamespaces::xml, StandardLocalNames::id))
63 return value.stringValue().simplified();
64 else
65 return value.stringValue();
66}
67
68Item AttributeConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
69{
70 const Item nameItem(m_operand1->evaluateSingleton(context));
71 const Item content(m_operand2->evaluateSingleton(context));
72
73 const QXmlName name(nameItem.as<QNameValue>()->qName());
74 const QString value(processValue(name, value: content));
75 const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(baseURI: QUrl()));
76
77 nodeBuilder->attribute(name, value: QStringRef(&value));
78
79 const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
80 context->addNodeModel(nm);
81 return nm->root(n: QXmlNodeModelIndex());
82}
83
84void AttributeConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
85{
86 QAbstractXmlReceiver *const receiver = context->outputReceiver();
87 const Item nameItem(m_operand1->evaluateSingleton(context));
88
89 const Item content(m_operand2->evaluateSingleton(context));
90 const QXmlName name(nameItem.as<QNameValue>()->qName());
91 const QString value(processValue(name, value: content));
92
93 receiver->attribute(name, value: QStringRef(&value));
94}
95
96SequenceType::Ptr AttributeConstructor::staticType() const
97{
98 return CommonSequenceTypes::ExactlyOneAttribute;
99}
100
101SequenceType::List AttributeConstructor::expectedOperandTypes() const
102{
103 SequenceType::List result;
104 result.append(t: CommonSequenceTypes::ExactlyOneQName);
105 result.append(t: CommonSequenceTypes::ZeroOrMoreItems);
106 return result;
107}
108
109Expression::Properties AttributeConstructor::properties() const
110{
111 return DisableElimination | IsNodeConstructor;
112}
113
114ExpressionVisitorResult::Ptr
115AttributeConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
116{
117 return visitor->visit(this);
118}
119
120Expression::ID AttributeConstructor::id() const
121{
122 return IDAttributeConstructor;
123}
124
125QT_END_NAMESPACE
126

source code of qtxmlpatterns/src/xmlpatterns/expr/qattributeconstructor.cpp