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Diffstat (limited to 'src/script/api/qscriptengine.h')
| -rw-r--r-- | src/script/api/qscriptengine.h | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/src/script/api/qscriptengine.h b/src/script/api/qscriptengine.h new file mode 100644 index 0000000..f293325 --- /dev/null +++ b/src/script/api/qscriptengine.h @@ -0,0 +1,449 @@ +/**************************************************************************** +** +** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the $MODULE$ of the Qt Toolkit. +** +** $TROLLTECH_DUAL_LICENSE$ +** +****************************************************************************/ + +#ifndef QSCRIPTENGINE_H +#define QSCRIPTENGINE_H + +#include <QtCore/qmetatype.h> + +#ifndef QT_NO_SCRIPT + +#include <QtCore/qvariant.h> + +#ifndef QT_NO_QOBJECT +#include <QtCore/qobject.h> +#else +#include <QtCore/qobjectdefs.h> +#endif + +#include <QtScript/qscriptvalue.h> +#include <QtScript/qscriptcontext.h> +#include <QtScript/qscriptstring.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Script) + +class QDateTime; +class QScriptClass; +class QScriptEngineAgent; +class QScriptEnginePrivate; + +#ifndef QT_NO_QOBJECT + +template <class T> +inline QScriptValue qscriptQMetaObjectConstructor(QScriptContext *, QScriptEngine *, T *) +{ + return QScriptValue(); +} + +#endif // QT_NO_QOBJECT + +#ifndef QT_NO_REGEXP +class QRegExp; +#endif + +#ifndef QT_NO_MEMBER_TEMPLATES +template <typename T> +inline QScriptValue qScriptValueFromValue(QScriptEngine *, const T &); + +template <typename T> +inline T qScriptValueToValue(const QScriptValue &); +#endif + +class QScriptSyntaxCheckResultPrivate; +class Q_SCRIPT_EXPORT QScriptSyntaxCheckResult +{ +public: + enum State { + Error, + Intermediate, + Valid + }; + + QScriptSyntaxCheckResult(const QScriptSyntaxCheckResult &other); + ~QScriptSyntaxCheckResult(); + + State state() const; + int errorLineNumber() const; + int errorColumnNumber() const; + QString errorMessage() const; + + QScriptSyntaxCheckResult &operator=(const QScriptSyntaxCheckResult &other); + +private: + QScriptSyntaxCheckResult(); + QScriptSyntaxCheckResult(QScriptSyntaxCheckResultPrivate *d); + QScriptSyntaxCheckResultPrivate *d_ptr; + + Q_DECLARE_PRIVATE(QScriptSyntaxCheckResult) + friend class QScriptEnginePrivate; +}; + +class Q_SCRIPT_EXPORT QScriptEngine +#ifndef QT_NO_QOBJECT + : public QObject +#endif +{ +#ifndef QT_NO_QOBJECT + Q_OBJECT +#endif +public: + enum ValueOwnership { + QtOwnership, + ScriptOwnership, + AutoOwnership + }; + + enum QObjectWrapOption { + ExcludeChildObjects = 0x0001, + ExcludeSuperClassMethods = 0x0002, + ExcludeSuperClassProperties = 0x0004, + ExcludeSuperClassContents = 0x0006, + SkipMethodsInEnumeration = 0x0008, + ExcludeDeleteLater = 0x0010, + + AutoCreateDynamicProperties = 0x0100, + PreferExistingWrapperObject = 0x0200 + }; + Q_DECLARE_FLAGS(QObjectWrapOptions, QObjectWrapOption) + + QScriptEngine(); +#ifndef QT_NO_QOBJECT + explicit QScriptEngine(QObject *parent); +#endif + virtual ~QScriptEngine(); + + QScriptValue globalObject() const; + void setGlobalObject(const QScriptValue &object); + + QScriptContext *currentContext() const; + QScriptContext *pushContext(); + void popContext(); + + bool canEvaluate(const QString &program) const; + static QScriptSyntaxCheckResult checkSyntax(const QString &program); + + QScriptValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1); + + bool isEvaluating() const; + void abortEvaluation(const QScriptValue &result = QScriptValue()); + + bool hasUncaughtException() const; + QScriptValue uncaughtException() const; + int uncaughtExceptionLineNumber() const; + QStringList uncaughtExceptionBacktrace() const; + void clearExceptions(); + + QScriptValue nullValue(); + QScriptValue undefinedValue(); + + typedef QScriptValue (*FunctionSignature)(QScriptContext *, QScriptEngine *); + typedef QScriptValue (*FunctionWithArgSignature)(QScriptContext *, QScriptEngine *, void *); + + QScriptValue newFunction(FunctionSignature signature, int length = 0); + QScriptValue newFunction(FunctionSignature signature, const QScriptValue &prototype, int length = 0); + + QScriptValue newFunction(FunctionWithArgSignature signature, void *arg); + + QScriptValue newVariant(const QVariant &value); + QScriptValue newVariant(const QScriptValue &object, const QVariant &value); + +#ifndef QT_NO_REGEXP + QScriptValue newRegExp(const QRegExp ®exp); +#endif + + QScriptValue newObject(); + QScriptValue newObject(QScriptClass *scriptClass, const QScriptValue &data = QScriptValue()); + QScriptValue newArray(uint length = 0); + QScriptValue newRegExp(const QString &pattern, const QString &flags); + QScriptValue newDate(qsreal value); + QScriptValue newDate(const QDateTime &value); + QScriptValue newActivationObject(); + +#ifndef QT_NO_QOBJECT + QScriptValue newQObject(QObject *object, ValueOwnership ownership = QtOwnership, + const QObjectWrapOptions &options = 0); + QScriptValue newQObject(const QScriptValue &scriptObject, QObject *qtObject, + ValueOwnership ownership = QtOwnership, + const QObjectWrapOptions &options = 0); + + QScriptValue newQMetaObject(const QMetaObject *metaObject, const QScriptValue &ctor = QScriptValue()); + +# ifndef QT_NO_MEMBER_TEMPLATES + template <class T> QScriptValue scriptValueFromQMetaObject(); +# endif // QT_NO_MEMBER_TEMPLATES + +#endif // QT_NO_QOBJECT + + + + QScriptValue defaultPrototype(int metaTypeId) const; + void setDefaultPrototype(int metaTypeId, const QScriptValue &prototype); + + + typedef QScriptValue (*MarshalFunction)(QScriptEngine *, const void *); + typedef void (*DemarshalFunction)(const QScriptValue &, void *); + + + +#ifndef QT_NO_MEMBER_TEMPLATES + template <typename T> + inline QScriptValue toScriptValue(const T &value) + { + return qScriptValueFromValue(this, value); + } + template <typename T> + inline T fromScriptValue(const QScriptValue &value) + { + return qScriptValueToValue<T>(value); + } +#endif // QT_NO_MEMBER_TEMPLATES + + void installTranslatorFunctions(const QScriptValue &object = QScriptValue()); + + QScriptValue importExtension(const QString &extension); + QStringList availableExtensions() const; + QStringList importedExtensions() const; + + void collectGarbage(); + + void setProcessEventsInterval(int interval); + int processEventsInterval() const; + + void setAgent(QScriptEngineAgent *agent); + QScriptEngineAgent *agent() const; + + QScriptString toStringHandle(const QString &str); + QScriptValue toObject(const QScriptValue &value); + + QScriptValue objectById(qint64 id) const; + +#ifndef QT_NO_QOBJECT +Q_SIGNALS: + void signalHandlerException(const QScriptValue &exception); +#endif + +private: + QScriptValue create(int type, const void *ptr); + + bool convert(const QScriptValue &value, int type, void *ptr); + static bool convertV2(const QScriptValue &value, int type, void *ptr); + + void registerCustomType(int type, MarshalFunction mf, DemarshalFunction df, + const QScriptValue &prototype); + + friend inline void qScriptRegisterMetaType_helper(QScriptEngine *, + int, MarshalFunction, DemarshalFunction, const QScriptValue &); + + friend inline QScriptValue qScriptValueFromValue_helper(QScriptEngine *, int, const void *); + + friend inline bool qscriptvalue_cast_helper(const QScriptValue &, int, void *); + +protected: +#ifdef QT_NO_QOBJECT + QScriptEnginePrivate *d_ptr; + + QScriptEngine(QScriptEnginePrivate &dd); +#else + QScriptEngine(QScriptEnginePrivate &dd, QObject *parent = 0); +#endif + +private: + Q_DECLARE_PRIVATE(QScriptEngine) + Q_DISABLE_COPY(QScriptEngine) +#ifndef QT_NO_QOBJECT + Q_PRIVATE_SLOT(d_func(), void _q_objectDestroyed(QObject *)) +#endif +}; + +#ifndef QT_NO_QOBJECT +template <class T> +inline QScriptValue qScriptValueFromQMetaObject( + QScriptEngine *engine +#ifndef qdoc + , T * /* dummy */ = 0 +#endif + ) +{ + typedef QScriptValue(*ConstructPtr)(QScriptContext *, QScriptEngine *, T *); + ConstructPtr cptr = qscriptQMetaObjectConstructor<T>; + return engine->newQMetaObject(&T::staticMetaObject, + engine->newFunction(reinterpret_cast<QScriptEngine::FunctionWithArgSignature>(cptr), 0)); +} + +#define Q_SCRIPT_DECLARE_QMETAOBJECT(T, _Arg1) \ +template<> inline QScriptValue qscriptQMetaObjectConstructor<T>(QScriptContext *ctx, QScriptEngine *eng, T *) \ +{ \ + _Arg1 arg1 = qscriptvalue_cast<_Arg1> (ctx->argument(0)); \ + T* t = new T(arg1); \ + if (ctx->isCalledAsConstructor()) \ + return eng->newQObject(ctx->thisObject(), t, QScriptEngine::AutoOwnership); \ + QScriptValue o = eng->newQObject(t, QScriptEngine::AutoOwnership); \ + o.setPrototype(ctx->callee().property(QString::fromLatin1("prototype"))); \ + return o; \ +} + +# ifndef QT_NO_MEMBER_TEMPLATES + template <class T> QScriptValue QScriptEngine::scriptValueFromQMetaObject() + { + return qScriptValueFromQMetaObject<T>(this); + } +# endif // QT_NO_MEMBER_TEMPLATES + +#endif // QT_NO_QOBJECT + +inline QScriptValue qScriptValueFromValue_helper(QScriptEngine *engine, int type, const void *ptr) +{ + if (!engine) + return QScriptValue(); + + return engine->create(type, ptr); +} + +template <typename T> +inline QScriptValue qScriptValueFromValue(QScriptEngine *engine, const T &t) +{ + return qScriptValueFromValue_helper(engine, qMetaTypeId<T>(), &t); +} + +template <> +inline QScriptValue qScriptValueFromValue<QVariant>(QScriptEngine *engine, const QVariant &v) +{ + QScriptValue result = qScriptValueFromValue_helper(engine, v.userType(), v.data()); + if (!result.isValid()) + result = engine->newVariant(v); + return result; +} + +inline bool qscriptvalue_cast_helper(const QScriptValue &value, int type, void *ptr) +{ + return QScriptEngine::convertV2(value, type, ptr); +} + +template<typename T> +T qscriptvalue_cast(const QScriptValue &value +#ifndef Q_QDOC +, T * = 0 +#endif + ) +{ + T t; + const int id = qMetaTypeId<T>(); + + if (qscriptvalue_cast_helper(value, id, &t)) + return t; + else if (value.isVariant()) + return qvariant_cast<T>(value.toVariant()); + + return T(); +} + +template <> +inline QVariant qscriptvalue_cast<QVariant>(const QScriptValue &value, QVariant *) +{ + return value.toVariant(); +} + +template <typename T> +inline T qScriptValueToValue(const QScriptValue &value) +{ + return qscriptvalue_cast<T>(value); +} + +inline void qScriptRegisterMetaType_helper(QScriptEngine *eng, int type, + QScriptEngine::MarshalFunction mf, + QScriptEngine::DemarshalFunction df, + const QScriptValue &prototype) +{ + eng->registerCustomType(type, mf, df, prototype); +} + +template<typename T> +int qScriptRegisterMetaType( + QScriptEngine *eng, + QScriptValue (*toScriptValue)(QScriptEngine *, const T &t), + void (*fromScriptValue)(const QScriptValue &, T &t), + const QScriptValue &prototype = QScriptValue() +#ifndef qdoc + , T * /* dummy */ = 0 +#endif +) +{ + const int id = qRegisterMetaType<T>(); // make sure it's registered + + qScriptRegisterMetaType_helper( + eng, id, reinterpret_cast<QScriptEngine::MarshalFunction>(toScriptValue), + reinterpret_cast<QScriptEngine::DemarshalFunction>(fromScriptValue), + prototype); + + return id; +} + +template <class Container> +QScriptValue qScriptValueFromSequence(QScriptEngine *eng, const Container &cont) +{ + QScriptValue a = eng->newArray(); + typename Container::const_iterator begin = cont.begin(); + typename Container::const_iterator end = cont.end(); + typename Container::const_iterator it; + quint32 i; + for (it = begin, i = 0; it != end; ++it, ++i) + a.setProperty(i, qScriptValueFromValue(eng, *it)); + return a; +} + +template <class Container> +void qScriptValueToSequence(const QScriptValue &value, Container &cont) +{ + quint32 len = value.property(QLatin1String("length")).toUInt32(); + for (quint32 i = 0; i < len; ++i) { + QScriptValue item = value.property(i); +#if defined Q_CC_MSVC && !defined Q_CC_MSVC_NET + cont.push_back(qscriptvalue_cast<Container::value_type>(item)); +#else + cont.push_back(qscriptvalue_cast<typename Container::value_type>(item)); +#endif + } +} + +template<typename T> +int qScriptRegisterSequenceMetaType( + QScriptEngine *engine, + const QScriptValue &prototype = QScriptValue() +#ifndef qdoc + , T * /* dummy */ = 0 +#endif +) +{ + return qScriptRegisterMetaType<T>(engine, qScriptValueFromSequence, + qScriptValueToSequence, prototype); +} + +#ifndef QT_NO_QOBJECT +Q_SCRIPT_EXPORT bool qScriptConnect(QObject *sender, const char *signal, + const QScriptValue &receiver, + const QScriptValue &function); +Q_SCRIPT_EXPORT bool qScriptDisconnect(QObject *sender, const char *signal, + const QScriptValue &receiver, + const QScriptValue &function); +#endif // QT_NO_QOBJECT + +Q_DECLARE_OPERATORS_FOR_FLAGS(QScriptEngine::QObjectWrapOptions) + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QT_NO_SCRIPT +#endif // QSCRIPTENGINE_H |