1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QJSENGINE_H
#define QJSENGINE_H
#include <QtCore/qmetatype.h>
#include <QtCore/qvariant.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qobject.h>
#include <QtQml/qjsvalue.h>
#include <QtQml/qqmldebug.h>
QT_BEGIN_NAMESPACE
template <typename T>
inline T qjsvalue_cast(const QJSValue &);
class QJSEnginePrivate;
class Q_QML_EXPORT QJSEngine
: public QObject
{
Q_OBJECT
Q_PROPERTY(QString uiLanguage READ uiLanguage WRITE setUiLanguage NOTIFY uiLanguageChanged)
public:
QJSEngine();
explicit QJSEngine(QObject *parent);
~QJSEngine() override;
QJSValue globalObject() const;
QJSValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
QJSValue importModule(const QString &fileName);
QJSValue newObject();
QJSValue newArray(uint length = 0);
QJSValue newQObject(QObject *object);
QJSValue newQMetaObject(const QMetaObject* metaObject);
template <typename T>
QJSValue newQMetaObject()
{
return newQMetaObject(&T::staticMetaObject);
}
QJSValue newErrorObject(QJSValue::ErrorType errorType, const QString &message = QString());
template <typename T>
inline QJSValue toScriptValue(const T &value)
{
return create(qMetaTypeId<T>(), &value);
}
template <typename T>
inline T fromScriptValue(const QJSValue &value)
{
return qjsvalue_cast<T>(value);
}
void collectGarbage();
#if QT_DEPRECATED_SINCE(5, 6)
QT_DEPRECATED void installTranslatorFunctions(const QJSValue &object = QJSValue());
#endif
enum Extension {
TranslationExtension = 0x1,
ConsoleExtension = 0x2,
GarbageCollectionExtension = 0x4,
AllExtensions = 0xffffffff
};
Q_DECLARE_FLAGS(Extensions, Extension)
void installExtensions(Extensions extensions, const QJSValue &object = QJSValue());
void setInterrupted(bool interrupted);
bool isInterrupted() const;
QV4::ExecutionEngine *handle() const { return m_v4Engine; }
void throwError(const QString &message);
void throwError(QJSValue::ErrorType errorType, const QString &message = QString());
QString uiLanguage() const;
void setUiLanguage(const QString &language);
Q_SIGNALS:
void uiLanguageChanged();
private:
QJSValue create(int type, const void *ptr);
static bool convertV2(const QJSValue &value, int type, void *ptr);
friend inline bool qjsvalue_cast_helper(const QJSValue &, int, void *);
protected:
QJSEngine(QJSEnginePrivate &dd, QObject *parent = nullptr);
private:
QV4::ExecutionEngine *m_v4Engine;
Q_DISABLE_COPY(QJSEngine)
Q_DECLARE_PRIVATE(QJSEngine)
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QJSEngine::Extensions)
inline bool qjsvalue_cast_helper(const QJSValue &value, int type, void *ptr)
{
return QJSEngine::convertV2(value, type, ptr);
}
template<typename T>
T qjsvalue_cast(const QJSValue &value)
{
T t;
const int id = qMetaTypeId<T>();
if (qjsvalue_cast_helper(value, id, &t))
return t;
else if (value.isVariant())
return qvariant_cast<T>(value.toVariant());
return T();
}
template <>
inline QVariant qjsvalue_cast<QVariant>(const QJSValue &value)
{
return value.toVariant();
}
Q_QML_EXPORT QJSEngine *qjsEngine(const QObject *);
QT_END_NAMESPACE
#endif // QJSENGINE_H
|
