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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_ProcessingInstructionConstructor_H
53 #define Patternist_ProcessingInstructionConstructor_H
55 #include "qpaircontainer_p.h"
64 * @short Constructs an element node. This covers both computed and directly constructed
67 * @see <a href="http://www.w3.org/TR/xquery/#id-constructors">XQuery
68 * 1.0: An XML Query Language, 3.7 Constructors</a>
69 * @author Frans Englich <frans.englich@nokia.com>
70 * @ingroup Patternist_expressions
72 class ProcessingInstructionConstructor : public PairContainer
75 ProcessingInstructionConstructor(const Expression::Ptr &operand1,
76 const Expression::Ptr &operand2);
78 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
79 virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;
81 virtual SequenceType::Ptr staticType() const;
84 * Both arguments must of type @c xs:string. It is assumes that the first argument's
85 * lexical space is @c xs:NCName.
87 virtual SequenceType::List expectedOperandTypes() const;
89 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
91 virtual Properties properties() const;
93 inline QXmlName evaluateTardata(const DynamicContext::Ptr &context) const;
95 * Performs left-trimming only.
97 * @see QString::trimmed()
99 static inline QString leftTrimmed(const QString &input);
101 QString data(const DynamicContext::Ptr &context) const;