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39 | |
40 | #include "qscriptobjectsnapshot_p.h" |
41 | |
42 | #include <QtCore/qmap.h> |
43 | #include <QtCore/qset.h> |
44 | #include <QtCore/qvector.h> |
45 | #include <QtCore/qnumeric.h> |
46 | #include <QtScript/qscriptvalueiterator.h> |
47 | |
48 | QT_BEGIN_NAMESPACE |
49 | |
50 | QScriptObjectSnapshot::QScriptObjectSnapshot() |
51 | { |
52 | } |
53 | |
54 | QScriptObjectSnapshot::~QScriptObjectSnapshot() |
55 | { |
56 | } |
57 | |
58 | static bool _q_equal(const QScriptValue &v1, const QScriptValue &v2) |
59 | { |
60 | if (v1.strictlyEquals(other: v2)) |
61 | return true; |
62 | if (v1.isNumber() && v2.isNumber() && qIsNaN(d: v1.toNumber()) && qIsNaN(d: v2.toNumber())) |
63 | return true; |
64 | return false; |
65 | } |
66 | |
67 | QScriptObjectSnapshot::Delta QScriptObjectSnapshot::capture(const QScriptValue &object) |
68 | { |
69 | Delta result; |
70 | QMap<QString, QScriptValueProperty> currProps; |
71 | QHash<QString, int> propertyNameToIndex; |
72 | { |
73 | int i = 0; |
74 | QScriptValueIterator it(object); |
75 | while (it.hasNext()) { |
76 | it.next(); |
77 | QScriptValueProperty prop(it.name(), it.value(), it.flags()); |
78 | currProps.insert(akey: it.name(), avalue: prop); |
79 | propertyNameToIndex.insert(akey: it.name(), avalue: i); |
80 | ++i; |
81 | } |
82 | if (object.prototype().isValid()) { |
83 | QString __proto__ = QString::fromLatin1(str: "__proto__" ); |
84 | QScriptValueProperty protoProp( |
85 | __proto__, object.prototype(), |
86 | QScriptValue::Undeletable | QScriptValue::ReadOnly); |
87 | currProps.insert(akey: __proto__, avalue: protoProp); |
88 | propertyNameToIndex.insert(akey: __proto__, avalue: i); |
89 | ++i; |
90 | } |
91 | } |
92 | |
93 | QSet<QString> prevSet; |
94 | for (int i = 0; i < m_properties.size(); ++i) |
95 | prevSet.insert(value: m_properties.at(i).name()); |
96 | QSet<QString> currSet = currProps.keys().toSet(); |
97 | QSet<QString> removedProperties = prevSet - currSet; |
98 | QSet<QString> addedProperties = currSet - prevSet; |
99 | QSet<QString> maybeChangedProperties = currSet & prevSet; |
100 | |
101 | { |
102 | QMap<int, QScriptValueProperty> am; |
103 | QSet<QString>::const_iterator it; |
104 | for (it = addedProperties.constBegin(); it != addedProperties.constEnd(); ++it) { |
105 | int idx = propertyNameToIndex[*it]; |
106 | am[idx] = currProps[*it]; |
107 | } |
108 | result.addedProperties = am.values(); |
109 | } |
110 | |
111 | { |
112 | QSet<QString>::const_iterator it; |
113 | for (it = maybeChangedProperties.constBegin(); it != maybeChangedProperties.constEnd(); ++it) { |
114 | const QScriptValueProperty &p1 = currProps[*it]; |
115 | const QScriptValueProperty &p2 = findProperty(name: *it); |
116 | if (!_q_equal(v1: p1.value(), v2: p2.value()) |
117 | || (p1.flags() != p2.flags())) { |
118 | result.changedProperties.append(t: p1); |
119 | } |
120 | } |
121 | } |
122 | |
123 | result.removedProperties = removedProperties.toList(); |
124 | |
125 | m_properties = currProps.values(); |
126 | |
127 | return result; |
128 | } |
129 | |
130 | QScriptValueProperty QScriptObjectSnapshot::findProperty(const QString &name) const |
131 | { |
132 | for (int i = 0; i < m_properties.size(); ++i) { |
133 | if (m_properties.at(i).name() == name) |
134 | return m_properties.at(i); |
135 | } |
136 | return QScriptValueProperty(); |
137 | } |
138 | |
139 | QScriptValuePropertyList QScriptObjectSnapshot::properties() const |
140 | { |
141 | return m_properties; |
142 | } |
143 | |
144 | QT_END_NAMESPACE |
145 | |