| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the QtScript module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL-ONLY$
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| 10 | ** GNU Lesser General Public License Usage
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| 11 | ** This file may be used under the terms of the GNU Lesser
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| 12 | ** General Public License version 2.1 as published by the Free Software
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| 13 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 14 | ** packaging of this file. Please review the following information to
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| 15 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 16 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 17 | **
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| 18 | ** If you have questions regarding the use of this file, please contact
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| 19 | ** Nokia at [email protected].
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| 20 | ** $QT_END_LICENSE$
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| 21 | **
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| 22 | ****************************************************************************/
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| 23 |
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| 24 | #ifndef QSCRIPTENGINE_H
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| 25 | #define QSCRIPTENGINE_H
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| 26 |
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| 27 | #include <QtCore/qmetatype.h>
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| 28 |
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| 29 | #include <QtCore/qvariant.h>
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| 30 | #include <QtCore/qsharedpointer.h>
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| 31 |
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| 32 | #ifndef QT_NO_QOBJECT
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| 33 | #include <QtCore/qobject.h>
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| 34 | #else
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| 35 | #include <QtCore/qobjectdefs.h>
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| 36 | #endif
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| 37 |
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| 38 | #include <QtScript/qscriptvalue.h>
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| 39 | #include <QtScript/qscriptcontext.h>
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| 40 | #include <QtScript/qscriptstring.h>
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| 41 | #include <QtScript/qscriptprogram.h>
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| 42 |
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| 43 | QT_BEGIN_HEADER
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| 44 |
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| 45 | QT_BEGIN_NAMESPACE
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| 46 |
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| 47 | QT_MODULE(Script)
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| 48 |
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| 49 | class QDateTime;
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| 50 | class QScriptClass;
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| 51 | class QScriptEngineAgent;
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| 52 | class QScriptEnginePrivate;
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| 53 |
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| 54 | #ifndef QT_NO_QOBJECT
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| 55 |
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| 56 | template <class T>
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| 57 | inline QScriptValue qscriptQMetaObjectConstructor(QScriptContext *, QScriptEngine *, T *)
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| 58 | {
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| 59 | return QScriptValue();
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| 60 | }
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| 61 |
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| 62 | #endif // QT_NO_QOBJECT
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| 63 |
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| 64 | #ifndef QT_NO_REGEXP
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| 65 | class QRegExp;
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| 66 | #endif
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| 67 |
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| 68 | #ifndef QT_NO_MEMBER_TEMPLATES
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| 69 | template <typename T>
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| 70 | inline QScriptValue qScriptValueFromValue(QScriptEngine *, const T &);
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| 71 |
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| 72 | template <typename T>
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| 73 | inline T qScriptValueToValue(const QScriptValue &);
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| 74 | #endif
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| 75 |
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| 76 | class QScriptSyntaxCheckResultPrivate;
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| 77 | class Q_SCRIPT_EXPORT QScriptSyntaxCheckResult
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| 78 | {
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| 79 | public:
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| 80 | enum State {
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| 81 | Error,
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| 82 | Intermediate,
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| 83 | Valid
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| 84 | };
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| 85 |
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| 86 | QScriptSyntaxCheckResult(const QScriptSyntaxCheckResult &other);
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| 87 | ~QScriptSyntaxCheckResult();
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| 88 |
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| 89 | State state() const;
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| 90 | int errorLineNumber() const;
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| 91 | int errorColumnNumber() const;
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| 92 | QString errorMessage() const;
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| 93 |
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| 94 | QScriptSyntaxCheckResult &operator=(const QScriptSyntaxCheckResult &other);
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| 95 |
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| 96 | private:
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| 97 | QScriptSyntaxCheckResult();
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| 98 | QScriptSyntaxCheckResult(QScriptSyntaxCheckResultPrivate *d);
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| 99 | QExplicitlySharedDataPointer<QScriptSyntaxCheckResultPrivate> d_ptr;
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| 100 |
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| 101 | Q_DECLARE_PRIVATE(QScriptSyntaxCheckResult)
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| 102 | friend class QScriptEngine;
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| 103 | friend class QScriptEnginePrivate;
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| 104 | };
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| 105 |
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| 106 | class Q_SCRIPT_EXPORT QScriptEngine
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| 107 | #ifndef QT_NO_QOBJECT
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| 108 | : public QObject
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| 109 | #endif
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| 110 | {
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| 111 | #ifndef QT_NO_QOBJECT
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| 112 | Q_OBJECT
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| 113 | #endif
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| 114 | public:
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| 115 | enum ValueOwnership {
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| 116 | QtOwnership,
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| 117 | ScriptOwnership,
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| 118 | AutoOwnership
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| 119 | };
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| 120 |
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| 121 | enum QObjectWrapOption {
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| 122 | ExcludeChildObjects = 0x0001,
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| 123 | ExcludeSuperClassMethods = 0x0002,
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| 124 | ExcludeSuperClassProperties = 0x0004,
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| 125 | ExcludeSuperClassContents = 0x0006,
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| 126 | SkipMethodsInEnumeration = 0x0008,
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| 127 | ExcludeDeleteLater = 0x0010,
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| 128 | ExcludeSlots = 0x0020,
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| 129 |
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| 130 | AutoCreateDynamicProperties = 0x0100,
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| 131 | PreferExistingWrapperObject = 0x0200
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| 132 | };
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| 133 | Q_DECLARE_FLAGS(QObjectWrapOptions, QObjectWrapOption)
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| 134 |
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| 135 | QScriptEngine();
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| 136 | #ifndef QT_NO_QOBJECT
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| 137 | explicit QScriptEngine(QObject *parent);
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| 138 | #endif
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| 139 | virtual ~QScriptEngine();
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| 140 |
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| 141 | QScriptValue globalObject() const;
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| 142 | void setGlobalObject(const QScriptValue &object);
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| 143 |
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| 144 | QScriptContext *currentContext() const;
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| 145 | QScriptContext *pushContext();
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| 146 | void popContext();
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| 147 |
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| 148 | bool canEvaluate(const QString &program) const;
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| 149 | static QScriptSyntaxCheckResult checkSyntax(const QString &program);
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| 150 |
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| 151 | QScriptValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
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| 152 |
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| 153 | QScriptValue evaluate(const QScriptProgram &program);
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| 154 |
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| 155 | bool isEvaluating() const;
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| 156 | void abortEvaluation(const QScriptValue &result = QScriptValue());
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| 157 |
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| 158 | bool hasUncaughtException() const;
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| 159 | QScriptValue uncaughtException() const;
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| 160 | int uncaughtExceptionLineNumber() const;
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| 161 | QStringList uncaughtExceptionBacktrace() const;
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| 162 | void clearExceptions();
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| 163 |
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| 164 | QScriptValue nullValue();
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| 165 | QScriptValue undefinedValue();
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| 166 |
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| 167 | typedef QScriptValue (*FunctionSignature)(QScriptContext *, QScriptEngine *);
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| 168 | typedef QScriptValue (*FunctionWithArgSignature)(QScriptContext *, QScriptEngine *, void *);
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| 169 |
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| 170 | QScriptValue newFunction(FunctionSignature signature, int length = 0);
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| 171 | QScriptValue newFunction(FunctionSignature signature, const QScriptValue &prototype, int length = 0);
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| 172 |
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| 173 | QScriptValue newFunction(FunctionWithArgSignature signature, void *arg);
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| 174 |
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| 175 | QScriptValue newVariant(const QVariant &value);
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| 176 | QScriptValue newVariant(const QScriptValue &object, const QVariant &value);
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| 177 |
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| 178 | #ifndef QT_NO_REGEXP
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| 179 | QScriptValue newRegExp(const QRegExp ®exp);
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| 180 | #endif
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| 181 |
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| 182 | QScriptValue newObject();
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| 183 | QScriptValue newObject(QScriptClass *scriptClass, const QScriptValue &data = QScriptValue());
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| 184 | QScriptValue newArray(uint length = 0);
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| 185 | QScriptValue newRegExp(const QString &pattern, const QString &flags);
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| 186 | QScriptValue newDate(qsreal value);
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| 187 | QScriptValue newDate(const QDateTime &value);
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| 188 | QScriptValue newActivationObject();
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| 189 |
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| 190 | #ifndef QT_NO_QOBJECT
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| 191 | QScriptValue newQObject(QObject *object, ValueOwnership ownership = QtOwnership,
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| 192 | const QObjectWrapOptions &options = 0);
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| 193 | QScriptValue newQObject(const QScriptValue &scriptObject, QObject *qtObject,
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| 194 | ValueOwnership ownership = QtOwnership,
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| 195 | const QObjectWrapOptions &options = 0);
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| 196 |
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| 197 | QScriptValue newQMetaObject(const QMetaObject *metaObject, const QScriptValue &ctor = QScriptValue());
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| 198 |
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| 199 | # ifndef QT_NO_MEMBER_TEMPLATES
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| 200 | template <class T> QScriptValue scriptValueFromQMetaObject();
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| 201 | # endif // QT_NO_MEMBER_TEMPLATES
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| 202 |
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| 203 | #endif // QT_NO_QOBJECT
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| 204 |
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| 205 |
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| 206 |
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| 207 | QScriptValue defaultPrototype(int metaTypeId) const;
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| 208 | void setDefaultPrototype(int metaTypeId, const QScriptValue &prototype);
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| 209 |
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| 210 |
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| 211 | typedef QScriptValue (*MarshalFunction)(QScriptEngine *, const void *);
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| 212 | typedef void (*DemarshalFunction)(const QScriptValue &, void *);
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| 213 |
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| 214 |
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| 215 |
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| 216 | #ifndef QT_NO_MEMBER_TEMPLATES
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| 217 | template <typename T>
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| 218 | inline QScriptValue toScriptValue(const T &value)
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| 219 | {
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| 220 | return qScriptValueFromValue(this, value);
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| 221 | }
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| 222 | template <typename T>
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| 223 | inline T fromScriptValue(const QScriptValue &value)
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| 224 | {
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| 225 | return qScriptValueToValue<T>(value);
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| 226 | }
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| 227 | #endif // QT_NO_MEMBER_TEMPLATES
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| 228 |
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| 229 | void installTranslatorFunctions(const QScriptValue &object = QScriptValue());
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| 230 |
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| 231 | QScriptValue importExtension(const QString &extension);
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| 232 | QStringList availableExtensions() const;
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| 233 | QStringList importedExtensions() const;
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| 234 |
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| 235 | void collectGarbage();
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| 236 | void reportAdditionalMemoryCost(int size);
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| 237 |
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| 238 | void setProcessEventsInterval(int interval);
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| 239 | int processEventsInterval() const;
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| 240 |
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| 241 | void setAgent(QScriptEngineAgent *agent);
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| 242 | QScriptEngineAgent *agent() const;
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| 243 |
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| 244 | QScriptString toStringHandle(const QString &str);
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| 245 | QScriptValue toObject(const QScriptValue &value);
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| 246 |
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| 247 | QScriptValue objectById(qint64 id) const;
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| 248 |
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| 249 | #ifndef QT_NO_QOBJECT
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| 250 | Q_SIGNALS:
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| 251 | void signalHandlerException(const QScriptValue &exception);
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| 252 | #endif
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| 253 |
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| 254 | private:
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| 255 | QScriptValue create(int type, const void *ptr);
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| 256 |
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| 257 | bool convert(const QScriptValue &value, int type, void *ptr);
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| 258 | static bool convertV2(const QScriptValue &value, int type, void *ptr);
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| 259 |
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| 260 | void registerCustomType(int type, MarshalFunction mf, DemarshalFunction df,
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| 261 | const QScriptValue &prototype);
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| 262 |
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| 263 | friend inline void qScriptRegisterMetaType_helper(QScriptEngine *,
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| 264 | int, MarshalFunction, DemarshalFunction, const QScriptValue &);
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| 265 |
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| 266 | friend inline QScriptValue qScriptValueFromValue_helper(QScriptEngine *, int, const void *);
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| 267 |
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| 268 | friend inline bool qscriptvalue_cast_helper(const QScriptValue &, int, void *);
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| 269 |
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| 270 | protected:
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| 271 | #ifdef QT_NO_QOBJECT
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| 272 | QScopedPointer<QScriptEnginePrivate> d_ptr;
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| 273 |
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| 274 | QScriptEngine(QScriptEnginePrivate &dd);
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| 275 | #else
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| 276 | QScriptEngine(QScriptEnginePrivate &dd, QObject *parent = 0);
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| 277 | #endif
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| 278 |
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| 279 | private:
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| 280 | Q_DECLARE_PRIVATE(QScriptEngine)
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| 281 | Q_DISABLE_COPY(QScriptEngine)
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| 282 | #ifndef QT_NO_QOBJECT
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| 283 | Q_PRIVATE_SLOT(d_func(), void _q_objectDestroyed(QObject *))
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| 284 | #endif
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| 285 | };
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| 286 |
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| 287 | #ifndef QT_NO_QOBJECT
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| 288 | template <class T>
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| 289 | inline QScriptValue qScriptValueFromQMetaObject(
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| 290 | QScriptEngine *engine
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| 291 | #ifndef qdoc
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| 292 | , T * /* dummy */ = 0
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| 293 | #endif
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| 294 | )
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| 295 | {
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| 296 | typedef QScriptValue(*ConstructPtr)(QScriptContext *, QScriptEngine *, T *);
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| 297 | ConstructPtr cptr = qscriptQMetaObjectConstructor<T>;
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| 298 | return engine->newQMetaObject(&T::staticMetaObject,
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| 299 | engine->newFunction(reinterpret_cast<QScriptEngine::FunctionWithArgSignature>(cptr), 0));
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| 300 | }
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| 301 |
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| 302 | #define Q_SCRIPT_DECLARE_QMETAOBJECT(T, _Arg1) \
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| 303 | template<> inline QScriptValue qscriptQMetaObjectConstructor<T>(QScriptContext *ctx, QScriptEngine *eng, T *) \
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| 304 | { \
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| 305 | _Arg1 arg1 = qscriptvalue_cast<_Arg1> (ctx->argument(0)); \
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| 306 | T* t = new T(arg1); \
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| 307 | if (ctx->isCalledAsConstructor()) \
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| 308 | return eng->newQObject(ctx->thisObject(), t, QScriptEngine::AutoOwnership); \
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| 309 | QScriptValue o = eng->newQObject(t, QScriptEngine::AutoOwnership); \
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| 310 | o.setPrototype(ctx->callee().property(QString::fromLatin1("prototype"))); \
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| 311 | return o; \
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| 312 | }
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| 313 |
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| 314 | # ifndef QT_NO_MEMBER_TEMPLATES
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| 315 | template <class T> QScriptValue QScriptEngine::scriptValueFromQMetaObject()
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| 316 | {
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| 317 | return qScriptValueFromQMetaObject<T>(this);
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| 318 | }
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| 319 | # endif // QT_NO_MEMBER_TEMPLATES
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| 320 |
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| 321 | #endif // QT_NO_QOBJECT
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| 322 |
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| 323 | inline QScriptValue qScriptValueFromValue_helper(QScriptEngine *engine, int type, const void *ptr)
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| 324 | {
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| 325 | if (!engine)
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| 326 | return QScriptValue();
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| 327 |
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| 328 | return engine->create(type, ptr);
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| 329 | }
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| 330 |
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| 331 | template <typename T>
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| 332 | inline QScriptValue qScriptValueFromValue(QScriptEngine *engine, const T &t)
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| 333 | {
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| 334 | return qScriptValueFromValue_helper(engine, qMetaTypeId<T>(), &t);
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| 335 | }
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| 336 |
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| 337 | template <>
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| 338 | inline QScriptValue qScriptValueFromValue<QVariant>(QScriptEngine *engine, const QVariant &v)
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| 339 | {
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| 340 | QScriptValue result = qScriptValueFromValue_helper(engine, v.userType(), v.data());
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| 341 | if (!result.isValid())
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| 342 | result = engine->newVariant(v);
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| 343 | return result;
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| 344 | }
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| 345 |
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| 346 | inline bool qscriptvalue_cast_helper(const QScriptValue &value, int type, void *ptr)
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| 347 | {
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| 348 | return QScriptEngine::convertV2(value, type, ptr);
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| 349 | }
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| 350 |
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| 351 | template<typename T>
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| 352 | T qscriptvalue_cast(const QScriptValue &value
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| 353 | #if !defined qdoc && defined Q_CC_MSVC && _MSC_VER < 1300
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| 354 | , T * = 0
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| 355 | #endif
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| 356 | )
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| 357 | {
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| 358 | T t;
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| 359 | const int id = qMetaTypeId<T>();
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| 360 |
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| 361 | if (qscriptvalue_cast_helper(value, id, &t))
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| 362 | return t;
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| 363 | else if (value.isVariant())
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| 364 | return qvariant_cast<T>(value.toVariant());
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| 365 |
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| 366 | return T();
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| 367 | }
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| 368 |
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| 369 | #if !defined Q_CC_MSVC || _MSC_VER >= 1300
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| 370 | template <>
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| 371 | inline QVariant qscriptvalue_cast<QVariant>(const QScriptValue &value)
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| 372 | {
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| 373 | return value.toVariant();
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| 374 | }
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| 375 | #endif
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| 376 |
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| 377 | template <typename T>
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| 378 | inline T qScriptValueToValue(const QScriptValue &value)
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| 379 | {
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| 380 | return qscriptvalue_cast<T>(value);
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| 381 | }
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| 382 |
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| 383 | inline void qScriptRegisterMetaType_helper(QScriptEngine *eng, int type,
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| 384 | QScriptEngine::MarshalFunction mf,
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| 385 | QScriptEngine::DemarshalFunction df,
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| 386 | const QScriptValue &prototype)
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| 387 | {
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| 388 | eng->registerCustomType(type, mf, df, prototype);
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| 389 | }
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| 390 |
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| 391 | template<typename T>
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| 392 | int qScriptRegisterMetaType(
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| 393 | QScriptEngine *eng,
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| 394 | QScriptValue (*toScriptValue)(QScriptEngine *, const T &t),
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| 395 | void (*fromScriptValue)(const QScriptValue &, T &t),
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| 396 | const QScriptValue &prototype = QScriptValue()
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| 397 | #ifndef qdoc
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| 398 | , T * /* dummy */ = 0
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| 399 | #endif
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| 400 | )
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| 401 | {
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| 402 | const int id = qRegisterMetaType<T>(); // make sure it's registered
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| 403 |
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| 404 | qScriptRegisterMetaType_helper(
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| 405 | eng, id, reinterpret_cast<QScriptEngine::MarshalFunction>(toScriptValue),
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| 406 | reinterpret_cast<QScriptEngine::DemarshalFunction>(fromScriptValue),
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| 407 | prototype);
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| 408 |
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| 409 | return id;
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| 410 | }
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| 411 |
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| 412 | template <class Container>
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| 413 | QScriptValue qScriptValueFromSequence(QScriptEngine *eng, const Container &cont)
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| 414 | {
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| 415 | QScriptValue a = eng->newArray();
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| 416 | typename Container::const_iterator begin = cont.begin();
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| 417 | typename Container::const_iterator end = cont.end();
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| 418 | typename Container::const_iterator it;
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| 419 | quint32 i;
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| 420 | for (it = begin, i = 0; it != end; ++it, ++i)
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| 421 | a.setProperty(i, qScriptValueFromValue(eng, *it));
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| 422 | return a;
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| 423 | }
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| 424 |
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| 425 | template <class Container>
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| 426 | void qScriptValueToSequence(const QScriptValue &value, Container &cont)
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| 427 | {
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| 428 | quint32 len = value.property(QLatin1String("length")).toUInt32();
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| 429 | for (quint32 i = 0; i < len; ++i) {
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| 430 | QScriptValue item = value.property(i);
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| 431 | #if defined Q_CC_MSVC && !defined Q_CC_MSVC_NET
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| 432 | cont.push_back(qscriptvalue_cast<Container::value_type>(item));
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| 433 | #else
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| 434 | cont.push_back(qscriptvalue_cast<typename Container::value_type>(item));
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| 435 | #endif
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| 436 | }
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| 437 | }
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| 438 |
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| 439 | template<typename T>
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| 440 | int qScriptRegisterSequenceMetaType(
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| 441 | QScriptEngine *engine,
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| 442 | const QScriptValue &prototype = QScriptValue()
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| 443 | #ifndef qdoc
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| 444 | , T * /* dummy */ = 0
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| 445 | #endif
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| 446 | )
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| 447 | {
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| 448 | return qScriptRegisterMetaType<T>(engine, qScriptValueFromSequence,
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| 449 | qScriptValueToSequence, prototype);
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| 450 | }
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| 451 |
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| 452 | #ifndef QT_NO_QOBJECT
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| 453 | Q_SCRIPT_EXPORT bool qScriptConnect(QObject *sender, const char *signal,
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| 454 | const QScriptValue &receiver,
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| 455 | const QScriptValue &function);
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|---|
| 456 | Q_SCRIPT_EXPORT bool qScriptDisconnect(QObject *sender, const char *signal,
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| 457 | const QScriptValue &receiver,
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|---|
| 458 | const QScriptValue &function);
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| 459 | #endif // QT_NO_QOBJECT
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| 460 |
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| 461 | Q_DECLARE_OPERATORS_FOR_FLAGS(QScriptEngine::QObjectWrapOptions)
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| 462 |
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| 463 | QT_END_NAMESPACE
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| 464 |
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| 465 | QT_END_HEADER
|
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| 466 |
|
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| 467 | #endif // QSCRIPTENGINE_H
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