qt-creator/src/plugins/qmlprofiler/qmlprofilerdatamodel.cpp

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#include "qmlprofilerdatamodel.h"
#include "qmlprofilermodelmanager.h"
#include <qmldebug/qmlprofilereventtypes.h>
#include <utils/qtcassert.h>
#include <QUrl>
#include <QDebug>

namespace QmlProfiler {

QmlDebug::QmlEventLocation getLocation(const QmlProfilerDataModel::QmlEventData &event);
QString getDisplayName(const QmlProfilerDataModel::QmlEventData &event);
QString getInitialDetails(const QmlProfilerDataModel::QmlEventData &event);

QmlDebug::QmlEventLocation getLocation(const QmlProfilerDataModel::QmlEventData &event)
{
    QmlDebug::QmlEventLocation eventLocation = event.location;
    if ((event.eventType == QmlDebug::Creating || event.eventType == QmlDebug::Compiling)
            && eventLocation.filename.isEmpty()) {
        eventLocation.filename = getInitialDetails(event);
        eventLocation.line = 1;
        eventLocation.column = 1;
    }
    return eventLocation;
}

QString getDisplayName(const QmlProfilerDataModel::QmlEventData &event)
{
    const QmlDebug::QmlEventLocation eventLocation = getLocation(event);
    QString displayName;

    // generate hash
    if (eventLocation.filename.isEmpty()) {
        displayName = QmlProfilerDataModel::tr("<bytecode>");
    } else {
        const QString filePath = QUrl(eventLocation.filename).path();
        displayName = filePath.mid(filePath.lastIndexOf(QLatin1Char('/')) + 1) + QLatin1Char(':') +
                QString::number(eventLocation.line);
    }

    return displayName;
}

QString getInitialDetails(const QmlProfilerDataModel::QmlEventData &event)
{
    QString details;
    // generate details string
    if (event.data.isEmpty())
        details = QmlProfilerDataModel::tr("Source code not available.");
    else {
        details = event.data.join(QLatin1String(" ")).replace(QLatin1Char('\n'),QLatin1Char(' ')).simplified();
        if (details.isEmpty()) {
            details = QmlProfilerDataModel::tr("anonymous function");
        } else {
            QRegExp rewrite(QLatin1String("\\(function \\$(\\w+)\\(\\) \\{ (return |)(.+) \\}\\)"));
            bool match = rewrite.exactMatch(details);
            if (match)
                details = rewrite.cap(1) + QLatin1String(": ") + rewrite.cap(3);
            if (details.startsWith(QLatin1String("file://")))
                details = details.mid(details.lastIndexOf(QLatin1Char('/')) + 1);
        }
    }

    return details;
}


bool compareStartTimes(const QmlProfilerDataModel::QmlEventData &t1, const QmlProfilerDataModel::QmlEventData &t2)
{
    return t1.startTime < t2.startTime;
}

//////////////////////////////////////////////////////////////////////////////

QmlProfilerDataModel::QmlProfilerDataModel(Utils::FileInProjectFinder *fileFinder,
                                                     QmlProfilerModelManager *parent)
    : QmlProfilerBaseModel(fileFinder, parent)
{
    // The document loading is very expensive.
    m_modelManager->setProxyCountWeight(m_modelId, 4);
}

const QVector<QmlProfilerDataModel::QmlEventData> &QmlProfilerDataModel::getEvents() const
{
    return m_eventList;
}

int QmlProfilerDataModel::count() const
{
    return m_eventList.count();
}

void QmlProfilerDataModel::clear()
{
    m_eventList.clear();
    // This call emits changed(). Don't emit it again here.
    QmlProfilerBaseModel::clear();
}

bool QmlProfilerDataModel::isEmpty() const
{
    return m_eventList.isEmpty();
}

void QmlProfilerDataModel::complete()
{
    // post-processing

    // sort events by start time
    qSort(m_eventList.begin(), m_eventList.end(), compareStartTimes);

    // rewrite strings
    int n = m_eventList.count();
    for (int i = 0; i < n; i++) {
        QmlEventData *event = &m_eventList[i];
        event->location = getLocation(*event);
        event->displayName = getDisplayName(*event);
        event->data = QStringList() << getInitialDetails(*event);

        //
        // request further details from files
        //

        if (event->eventType != QmlDebug::Binding && event->eventType != QmlDebug::HandlingSignal)
            continue;

        // This skips anonymous bindings in Qt4.8 (we don't have valid location data for them)
        if (event->location.filename.isEmpty())
            continue;

        // Skip non-anonymous bindings from Qt4.8 (we already have correct details for them)
        if (event->location.column == -1)
            continue;

        m_detailsRewriter.requestDetailsForLocation(i, event->location);
        m_modelManager->modelProxyCountUpdated(m_modelId, i + n, n * 2);
    }

    // Allow changed() event only after documents have been reloaded to avoid
    // unnecessary updates of child models.
    QmlProfilerBaseModel::complete();
}

void QmlProfilerDataModel::addQmlEvent(int type, int bindingType, qint64 startTime,
                                            qint64 duration, const QStringList &data,
                                            const QmlDebug::QmlEventLocation &location,
                                            qint64 ndata1, qint64 ndata2, qint64 ndata3,
                                            qint64 ndata4, qint64 ndata5)
{
    QString displayName;
    if (type == QmlDebug::Painting && bindingType == QmlDebug::AnimationFrame) {
        displayName = tr("Animations");
    } else {
        displayName = QString::fromLatin1("%1:%2").arg(
                location.filename,
                QString::number(location.line));
    }

    QmlEventData eventData = {displayName, type, bindingType, startTime, duration, data, location,
                              ndata1, ndata2, ndata3, ndata4, ndata5};
    m_eventList.append(eventData);

    m_modelManager->modelProxyCountUpdated(m_modelId, startTime,
                                           m_modelManager->estimatedProfilingTime() * 2);
}

QString QmlProfilerDataModel::getHashString(const QmlProfilerDataModel::QmlEventData &event)
{
    return QString::fromLatin1("%1:%2:%3:%4:%5").arg(
                event.location.filename,
                QString::number(event.location.line),
                QString::number(event.location.column),
                QString::number(event.eventType),
                QString::number(event.bindingType));
}

qint64 QmlProfilerDataModel::lastTimeMark() const
{
    if (m_eventList.isEmpty())
        return 0;

    return m_eventList.last().startTime + m_eventList.last().duration;
}

void QmlProfilerDataModel::detailsChanged(int requestId, const QString &newString)
{
    QTC_ASSERT(requestId < m_eventList.count(), return);

    QmlEventData *event = &m_eventList[requestId];
    event->data = QStringList(newString);
}

}