QScript::QtFunction Class Reference

#include <qscriptqobject_p.h>

Inheritance diagram for QScript::QtFunction:

Classes
struct	Data

Public Functions
virtual const JSC::ClassInfo *	classInfo () const
JSC::JSValue	execute (JSC::ExecState *exec, JSC::JSValue thisValue, const JSC::ArgList &args)
virtual JSC::CallType	getCallData (JSC::CallData &)
int	initialIndex () const
virtual void	markChildren (JSC::MarkStack &)
bool	maybeOverloaded () const
const QMetaObject *	metaObject () const
int	mostGeneralMethod (QMetaMethod *out=0) const
QList< int >	overloadedIndexes () const
QObject *	qobject () const
	QtFunction (JSC::JSValue object, int initialIndex, bool maybeOverloaded, JSC::JSGlobalData *, WTF::PassRefPtr< JSC::Structure >, const JSC::Identifier &)
QScriptObject *	wrapperObject () const
virtual	~QtFunction ()

Static Public Functions
static JSC::JSValue JSC_HOST_CALL	call (JSC::ExecState *, JSC::JSObject *, JSC::JSValue, const JSC::ArgList &)

Static Public Variables
static const JSC::ClassInfo	info = { "QtFunction", &InternalFunction::info, 0, 0 }

Properties
Data *	data

Detailed Description

Definition at line 174 of file qscriptqobject_p.h.

Constructors and Destructors

QtFunction()

QScript::QtFunction::QtFunction	(	JSC::JSValue	object,
		int	initialIndex,
		bool	maybeOverloaded,
		JSC::JSGlobalData *	data,
		WTF::PassRefPtr< JSC::Structure >	sid,
		const JSC::Identifier &	ident
	)

Definition at line 273 of file qscriptqobject.cpp.

    : JSC::InternalFunction(data, sid, ident),
      data(new Data(object, initialIndex, maybeOverloaded))
{
}

~QtFunction()

QScript::QtFunction::~QtFunction ( )

virtual

Definition at line 281 of file qscriptqobject.cpp.

{
    delete data;
}

Functions

call()

JSC::JSValue JSC_HOST_CALL QScript::QtFunction::call ( JSC::ExecState *  exec, JSC::JSObject *  callee, JSC::JSValue  thisValue, const JSC::ArgList &  args  )

static

Definition at line 1029 of file qscriptqobject.cpp.

Referenced by getCallData().

{
    if (!callee->inherits(&QtFunction::info))
        return throwError(exec, JSC::TypeError, "callee is not a QtFunction object");
    QtFunction *qfun =  static_cast<QtFunction*>(callee);
    QScriptEnginePrivate *eng_p = scriptEngineFromExec(exec);
    JSC::ExecState *previousFrame = eng_p->currentFrame;
    eng_p->currentFrame = exec;
    eng_p->pushContext(exec, thisValue, args, callee);
    JSC::JSValue result = qfun->execute(eng_p->currentFrame, thisValue, args);
    eng_p->popContext();
    eng_p->currentFrame = previousFrame;
    return result;
}

classInfo()

virtual const JSC::ClassInfo* QScript::QtFunction::classInfo ( ) const

inlinevirtual

Definition at line 195 of file qscriptqobject_p.h.

{ return &info; }

execute()

JSC::JSValue QScript::QtFunction::execute	(	JSC::ExecState *	exec,
		JSC::JSValue	thisValue,
		const JSC::ArgList &	args
	)

Definition at line 995 of file qscriptqobject.cpp.

Referenced by call().

{
    Q_ASSERT(data->object.inherits(&QScriptObject::info));
    QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(data->object));
    QScriptObjectDelegate *delegate = scriptObject->delegate();
    Q_ASSERT(delegate && (delegate->type() == QScriptObjectDelegate::QtObject));
    QObject *qobj = static_cast<QScript::QObjectDelegate*>(delegate)->value();
    if (!qobj)
        return JSC::throwError(exec, JSC::GeneralError, QString::fromLatin1("cannot call function of deleted QObject"));
    QScriptEnginePrivate *engine = scriptEngineFromExec(exec);

    const QMetaObject *meta = qobj->metaObject();
    QObject *thisQObject = 0;
    thisValue = engine->toUsableValue(thisValue);
    if (thisValue.inherits(&QScriptObject::info)) {
        delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();
        if (delegate && (delegate->type() == QScriptObjectDelegate::QtObject))
            thisQObject = static_cast<QScript::QObjectDelegate*>(delegate)->value();
    }
    if (!thisQObject)
        thisQObject = qobj; // ### TypeError

    if (!meta->cast(thisQObject)) {
        // invoking a function in the prototype
        thisQObject = qobj;
    }

    return callQtMethod(exec, QMetaMethod::Method, thisQObject, scriptArgs,
                        meta, data->initialIndex, data->maybeOverloaded);
}

getCallData()

JSC::CallType QScript::QtFunction::getCallData ( JSC::CallData &  callData )

virtual

Definition at line 286 of file qscriptqobject.cpp.

{
    callData.native.function = call;
    return JSC::CallTypeHost;
}

initialIndex()

int QScript::QtFunction::initialIndex

(

)

const

Definition at line 321 of file qscriptqobject.cpp.

Referenced by QScript::functionConnect(), QScript::functionDisconnect(), mostGeneralMethod(), and overloadedIndexes().

{
    return data->initialIndex;
}

markChildren()

void QScript::QtFunction::markChildren ( JSC::MarkStack &  markStack )

virtual

Definition at line 292 of file qscriptqobject.cpp.

{
    if (data->object)
        markStack.append(data->object);
    JSC::InternalFunction::markChildren(markStack);
}

maybeOverloaded()

bool QScript::QtFunction::maybeOverloaded

(

)

const

Definition at line 326 of file qscriptqobject.cpp.

Referenced by mostGeneralMethod(), and overloadedIndexes().

{
    return data->maybeOverloaded;
}

metaObject()

const QMetaObject * QScript::QtFunction::metaObject

(

)

const

Definition at line 313 of file qscriptqobject.cpp.

Referenced by QScript::functionConnect(), QScript::functionDisconnect(), mostGeneralMethod(), and overloadedIndexes().

{
    QObject *qobj = qobject();
    if (!qobj)
        return 0;
    return qobj->metaObject();
}

mostGeneralMethod()

int QScript::QtFunction::mostGeneralMethod

(

QMetaMethod *

out = 0

)

const

Definition at line 331 of file qscriptqobject.cpp.

Referenced by overloadedIndexes(), QScriptEnginePrivate::scriptConnect(), and QScriptEnginePrivate::scriptDisconnect().

{
    const QMetaObject *meta = metaObject();
    if (!meta)
        return -1;
    int index = initialIndex();
    QMetaMethod method = meta->method(index);
    if (maybeOverloaded() && (method.attributes() & QMetaMethod::Cloned)) {
        // find the most general method
        do {
            method = meta->method(--index);
        } while (method.attributes() & QMetaMethod::Cloned);
    }
    if (out)
        *out = method;
    return index;
}

overloadedIndexes()

QList< int > QScript::QtFunction::overloadedIndexes

(

)

const

Definition at line 349 of file qscriptqobject.cpp.

Referenced by QScript::functionConnect().

{
    if (!maybeOverloaded())
        return QList<int>();
    QList<int> result;
    const QMetaObject *meta = metaObject();
    QMetaMethod method = meta->method(initialIndex());
    int nameLength = methodNameLength(method);
    for (int index = mostGeneralMethod() - 1; index >= 0; --index) {
        if (methodNameEquals(meta->method(index), method.signature(), nameLength))
            result.append(index);
    }
    return result;
}

qobject()

QObject * QScript::QtFunction::qobject

(

)

const

Definition at line 305 of file qscriptqobject.cpp.

Referenced by metaObject(), QScriptEnginePrivate::scriptConnect(), and QScriptEnginePrivate::scriptDisconnect().

{
    QScriptObject *scriptObject = wrapperObject();
    QScriptObjectDelegate *delegate = scriptObject->delegate();
    Q_ASSERT(delegate && (delegate->type() == QScriptObjectDelegate::QtObject));
    return static_cast<QScript::QObjectDelegate*>(delegate)->value();
}

wrapperObject()

QScriptObject * QScript::QtFunction::wrapperObject

(

)

const

Definition at line 299 of file qscriptqobject.cpp.

Referenced by qobject(), and QScriptEnginePrivate::scriptConnect().

{
    Q_ASSERT(JSC::asObject(data->object)->inherits(&QScriptObject::info));
    return static_cast<QScriptObject*>(JSC::asObject(data->object));
}

Properties

data

Data* QScript::QtFunction::data

private

Definition at line 213 of file qscriptqobject_p.h.

Referenced by execute(), initialIndex(), markChildren(), maybeOverloaded(), wrapperObject(), and ~QtFunction().

info

const JSC::ClassInfo QScript::QtFunction::info = { "QtFunction", &InternalFunction::info, 0, 0 }

static

Definition at line 196 of file qscriptqobject_p.h.

Referenced by execute(), QScript::functionConnect(), QScript::functionDisconnect(), and QScriptContextInfoPrivate::QScriptContextInfoPrivate().

---

The documentation for this class was generated from the following files:

• /src/script/bridge/qscriptqobject_p.h
• /src/script/bridge/qscriptqobject.cpp