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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_Boolean_H
53 #define Patternist_Boolean_H
55 #include <private/qitem_p.h>
64 * @short Implements the value instance of the @c xs:boolean type.
66 * @author Frans Englich <frans.englich@nokia.com>
67 * @ingroup Patternist_xdm
69 class Q_AUTOTEST_EXPORT Boolean : public AtomicValue
72 typedef AtomicValue::Ptr Ptr;
75 * @returns the boolean value this Boolean represents
77 static bool evaluateEBV(const Item::Iterator::Ptr &e,
78 const QExplicitlySharedDataPointer<DynamicContext> &);
80 static bool evaluateEBV(const Item &first,
81 const Item::Iterator::Ptr &e,
82 const QExplicitlySharedDataPointer<DynamicContext> &);
84 static bool evaluateEBV(const Item &item,
85 const QExplicitlySharedDataPointer<DynamicContext> &context);
87 virtual QString stringValue() const;
90 * @returns a Boolean object instantiating @p value. Use True() or False()
91 * if you already know what value you need.
93 static Boolean::Ptr fromValue(const bool value);
96 * Creates a boolean value from a lexical representation. "true" and "1"
97 * becomes @c true, while "false" and "0" becomes @c false.
99 static AtomicValue::Ptr fromLexical(const QString &val);
102 * Get the Effective %Boolean Value of this boolean value. For <tt>xs:boolean</tt>, this
103 * is simply the value.
105 virtual bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
107 virtual ItemType::Ptr type() const;
109 inline bool value() const
115 friend class CommonValues;
116 Boolean(const bool value);