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42 #include "qcommonsequencetypes_p.h"
43 #include "qpatternistlocale_p.h"
44 #include "qnodebuilder_p.h"
45 #include "qqnamevalue_p.h"
47 #include "qprocessinginstructionconstructor_p.h"
51 using namespace QPatternist;
53 ProcessingInstructionConstructor::
54 ProcessingInstructionConstructor(const Expression::Ptr &op1,
55 const Expression::Ptr &op2) : PairContainer(op1, op2)
59 QString ProcessingInstructionConstructor::leftTrimmed(const QString &input)
61 const int len = input.length();
63 for(int i = 0; i < len; ++i)
65 if(!input.at(i).isSpace())
69 return QString(); /* input consists only of whitespace. All was trimmed. */
72 QString ProcessingInstructionConstructor::data(const DynamicContext::Ptr &context) const
74 const Item name(m_operand1->evaluateSingleton(context));
75 const Item dataArg(m_operand2->evaluateSingleton(context));
79 /* Perform trimming before validation, to increase speed. */
80 const QString value(leftTrimmed(dataArg.stringValue()));
82 if(value.contains(QLatin1String("?>")))
84 context->error(QtXmlPatterns::tr("The data of a processing instruction cannot contain the string %1").arg(formatData("?>")),
85 ReportContext::XQDY0026, this);
95 QXmlName ProcessingInstructionConstructor::evaluateTardata(const DynamicContext::Ptr &context) const
97 const Item name(m_operand1->evaluateSingleton(context));
98 return context->namePool()->allocateQName(QString(), name.stringValue());
101 Item ProcessingInstructionConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
103 const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));
105 nodeBuilder->processingInstruction(evaluateTardata(context), data(context));
107 const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
108 context->addNodeModel(nm);
110 return nm->root(QXmlNodeModelIndex());
113 void ProcessingInstructionConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
115 QAbstractXmlReceiver *const receiver = context->outputReceiver();
117 receiver->processingInstruction(evaluateTardata(context), data(context));
120 SequenceType::Ptr ProcessingInstructionConstructor::staticType() const
122 return CommonSequenceTypes::ExactlyOneProcessingInstruction;
125 SequenceType::List ProcessingInstructionConstructor::expectedOperandTypes() const
127 SequenceType::List result;
128 result.append(CommonSequenceTypes::ExactlyOneString);
129 result.append(CommonSequenceTypes::ZeroOrOneString);
133 Expression::Properties ProcessingInstructionConstructor::properties() const
135 return DisableElimination | IsNodeConstructor;
138 ExpressionVisitorResult::Ptr
139 ProcessingInstructionConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
141 return visitor->visit(this);