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39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef Patternist_Boolean_H
51#define Patternist_Boolean_H
52
53#include <private/qitem_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Implements the value instance of the @c xs:boolean type.
61 *
62 * @author Frans Englich <frans.englich@nokia.com>
63 * @ingroup Patternist_xdm
64 */
65 class Q_AUTOTEST_EXPORT Boolean : public AtomicValue
66 {
67 public:
68 typedef AtomicValue::Ptr Ptr;
69
70 /**
71 * @returns the boolean value this Boolean represents
72 */
73 static bool evaluateEBV(const Item::Iterator::Ptr &e,
74 const QExplicitlySharedDataPointer<DynamicContext> &);
75
76 static bool evaluateEBV(const Item &first,
77 const Item::Iterator::Ptr &e,
78 const QExplicitlySharedDataPointer<DynamicContext> &);
79
80 static bool evaluateEBV(const Item &item,
81 const QExplicitlySharedDataPointer<DynamicContext> &context);
82
83 virtual QString stringValue() const;
84
85 /**
86 * @returns a Boolean object instantiating @p value. Use True() or False()
87 * if you already know what value you need.
88 */
89 static Boolean::Ptr fromValue(const bool value);
90
91 /**
92 * Creates a boolean value from a lexical representation. "true" and "1"
93 * becomes @c true, while "false" and "0" becomes @c false.
94 */
95 static AtomicValue::Ptr fromLexical(const QString &val);
96
97 /**
98 * Get the Effective %Boolean Value of this boolean value. For <tt>xs:boolean</tt>, this
99 * is simply the value.
100 */
101 virtual bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
102
103 virtual ItemType::Ptr type() const;
104
105 inline bool value() const
106 {
107 return m_value;
108 }
109
110 protected:
111 friend class CommonValues;
112 Boolean(const bool value);
113
114 private:
115 const bool m_value;
116 };
117}
118
119QT_END_NAMESPACE
120
121#endif
122

source code of qtxmlpatterns/src/xmlpatterns/data/qboolean_p.h