コード例 #1
0
QQmlSourceLocation QQmlBoundSignalExpression::sourceLocation() const
{
    QV4::Function *f = function();
    if (f) {
        QQmlSourceLocation loc;
        loc.sourceFile = f->sourceFile();
        loc.line = f->compiledFunction->location.line;
        loc.column = f->compiledFunction->location.column;
        return loc;
    }
    return QQmlSourceLocation();
}
コード例 #2
0
QQmlSourceLocation QQmlBoundSignalExpression::sourceLocation() const
{
    if (expressionFunctionValid()) {
        QV4::Function *f = function();
        Q_ASSERT(f);
        QQmlSourceLocation loc;
        loc.sourceFile = f->sourceFile();
        loc.line = f->compiledFunction->location.line;
        loc.column = f->compiledFunction->location.column;
        return loc;
    }
    Q_ASSERT(!m_extra.isNull());
    return m_extra->m_sourceLocation;
}
コード例 #3
0
QString QQmlBinding::expressionIdentifier(QQmlJavaScriptExpression *e)
{
    QQmlBinding *This = static_cast<QQmlBinding *>(e);

    QQmlEnginePrivate *ep = QQmlEnginePrivate::get(This->context()->engine);
    QV4::Scope scope(ep->v4engine());
    QV4::ScopedValue f(scope, This->v4function.value());
    QV4::Function *function = f->asFunctionObject()->function();

    QString url = function->sourceFile();
    quint16 lineNumber = function->compiledFunction->location.line;
    quint16 columnNumber = function->compiledFunction->location.column;

    return url + QLatin1Char(':') + QString::number(lineNumber) + QLatin1Char(':') + QString::number(columnNumber);
}
コード例 #4
0
void QQmlBinding::update(QQmlPropertyPrivate::WriteFlags flags)
{
    if (!enabledFlag() || !context() || !context()->isValid())
        return;

    // Check that the target has not been deleted
    if (QQmlData::wasDeleted(object()))
        return;

    QString url;
    quint16 lineNumber;
    quint16 columnNumber;

    QQmlEnginePrivate *ep = QQmlEnginePrivate::get(context()->engine);
    QV4::Scope scope(ep->v4engine());
    QV4::ScopedFunctionObject f(scope, v4function.value());
    Q_ASSERT(f);
    if (f->bindingKeyFlag()) {
        Q_ASSERT(f->as<QV4::QQmlBindingFunction>());
        QQmlSourceLocation loc = static_cast<QV4::QQmlBindingFunction *>(f.getPointer())->d()->bindingLocation;
        url = loc.sourceFile;
        lineNumber = loc.line;
        columnNumber = loc.column;
    } else {
        QV4::Function *function = f->asFunctionObject()->function();
        Q_ASSERT(function);

        url = function->sourceFile();
        lineNumber = function->compiledFunction->location.line;
        columnNumber = function->compiledFunction->location.column;
    }

    int lineNo = qmlSourceCoordinate(lineNumber);
    int columnNo = qmlSourceCoordinate(columnNumber);

    QQmlTrace trace("General Binding Update");
    trace.addDetail("URL", url);
    trace.addDetail("Line", lineNo);
    trace.addDetail("Column", columnNo);

    if (!updatingFlag()) {
        QQmlBindingProfiler prof(ep->profiler, url, lineNo, columnNo);
        setUpdatingFlag(true);

        QQmlAbstractExpression::DeleteWatcher watcher(this);

        if (m_core.propType == qMetaTypeId<QQmlBinding *>()) {

            int idx = m_core.coreIndex;
            Q_ASSERT(idx != -1);

            QQmlBinding *t = this;
            int status = -1;
            void *a[] = { &t, 0, &status, &flags };
            QMetaObject::metacall(*m_coreObject, QMetaObject::WriteProperty, idx, a);

        } else {
            ep->referenceScarceResources();

            bool isUndefined = false;

            QV4::ScopedValue result(scope, QQmlJavaScriptExpression::evaluate(context(), f, &isUndefined));

            trace.event("writing binding result");

            bool needsErrorLocationData = false;
            if (!watcher.wasDeleted() && !hasError())
                needsErrorLocationData = !QQmlPropertyPrivate::writeBinding(*m_coreObject, m_core, context(),
                                                                    this, result, isUndefined, flags);

            if (!watcher.wasDeleted()) {

                if (needsErrorLocationData)
                    delayedError()->setErrorLocation(QUrl(url), lineNumber, columnNumber);

                if (hasError()) {
                    if (!delayedError()->addError(ep)) ep->warning(this->error(context()->engine));
                } else {
                    clearError();
                }

            }

            ep->dereferenceScarceResources();
        }

        if (!watcher.wasDeleted())
            setUpdatingFlag(false);
    } else {
        QQmlProperty p = property();
        QQmlAbstractBinding::printBindingLoopError(p);
    }
}