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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_AtomicMathematician_H |
51 | #define Patternist_AtomicMathematician_H |
52 | |
53 | #include <QFlags> |
54 | |
55 | #include <private/qdynamiccontext_p.h> |
56 | #include <private/qitem_p.h> |
57 | #include <private/qatomictypedispatch_p.h> |
58 | |
59 | QT_BEGIN_NAMESPACE |
60 | |
61 | namespace QPatternist |
62 | { |
63 | /** |
64 | * @short Base class for classes that performs arithmetic operations between atomic values. |
65 | * |
66 | * @ingroup Patternist_xdm |
67 | * @author Frans Englich <frans.englich@nokia.com> |
68 | */ |
69 | class Q_AUTOTEST_EXPORT AtomicMathematician : public AtomicTypeVisitorResult |
70 | { |
71 | public: |
72 | virtual ~AtomicMathematician(); |
73 | |
74 | typedef QExplicitlySharedDataPointer<AtomicMathematician> Ptr; |
75 | |
76 | enum Operator |
77 | { |
78 | /** |
79 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-divide">XQuery 1.0 |
80 | * and XPath 2.0 Functions and Operators, 6.2.4 op:numeric-divide</a> |
81 | */ |
82 | Div = 1, |
83 | |
84 | /** |
85 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-integer-divide">XQuery 1.0 |
86 | * and XPath 2.0 Functions and Operators, 6.2.5 op:numeric-integer-divide</a> |
87 | */ |
88 | IDiv = 2, |
89 | |
90 | /** |
91 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-subtract">XQuery 1.0 |
92 | * and XPath 2.0 Functions and Operators, 6.2.2 op:numeric-subtract</a> |
93 | */ |
94 | Substract = 4, |
95 | |
96 | /** |
97 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-mod">XQuery 1.0 |
98 | * and XPath 2.0 Functions and Operators, 6.2.6 op:numeric-mod</a> |
99 | */ |
100 | Mod = 8, |
101 | |
102 | /** |
103 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-multiply">XQuery 1.0 |
104 | * and XPath 2.0 Functions and Operators, 6.2.3 op:numeric-multiply</a> |
105 | */ |
106 | Multiply = 16, |
107 | |
108 | /** |
109 | * @see <a href="http://www.w3.org/TR/xpath-functions/#func-numeric-add">XQuery 1.0 |
110 | * and XPath 2.0 Functions and Operators, 6.2.1 op:numeric-add</a> |
111 | */ |
112 | Add = 32 |
113 | }; |
114 | |
115 | typedef QFlags<Operator> Operators; |
116 | |
117 | virtual Item calculate(const Item &operand1, |
118 | const Operator op, |
119 | const Item &operand2, |
120 | const QExplicitlySharedDataPointer<DynamicContext> &context) const = 0; |
121 | |
122 | static QString displayName(const AtomicMathematician::Operator op); |
123 | |
124 | }; |
125 | Q_DECLARE_OPERATORS_FOR_FLAGS(AtomicMathematician::Operators) |
126 | } |
127 | |
128 | QT_END_NAMESPACE |
129 | |
130 | #endif |
131 | |