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3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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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 | |
55 | QT_BEGIN_NAMESPACE |
56 | |
57 | namespace 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 | |
119 | QT_END_NAMESPACE |
120 | |
121 | #endif |
122 | |