RedPanda-CPP/RedPandaIDE/debugger.cpp

#include "debugger.h"
#include "utils.h"
#include "mainwindow.h"
#include "editor.h"
#include "settings.h"
#include "widgets/cpudialog.h"
#include "systemconsts.h"

#include <QFile>
#include <QFileInfo>
#include <QMessageBox>
#include <QPlainTextEdit>
#include <QDebug>
#include <QDir>
#include <QJsonDocument>
#include <QJsonArray>
#include <QJsonObject>

Debugger::Debugger(QObject *parent) : QObject(parent)
{
    mBreakpointModel=new BreakpointModel(this);
    mBacktraceModel=new BacktraceModel(this);
    mWatchModel = new WatchModel(this);
    mRegisterModel = new RegisterModel(this);
    mExecuting = false;
    mUseUTF8 = false;
    mReader = nullptr;
    mCommandChanged = false;
    mLeftPageIndexBackup = -1;
}

bool Debugger::start()
{
    Settings::PCompilerSet compilerSet = pSettings->compilerSets().defaultSet();
    if (!compilerSet) {
        QMessageBox::critical(pMainWindow,
                              tr("No compiler set"),
                              tr("No compiler set is configured.")+tr("Can't start debugging."));
        return false;
    }
    mExecuting = true;
    QString debuggerPath = compilerSet->debugger();
    //QFile debuggerProgram(debuggerPath);
    if (!isTextAllAscii(debuggerPath)) {
        mExecuting = false;
        QMessageBox::critical(pMainWindow,
                              tr("Debugger path error"),
                              tr("Debugger's path \"%1\" contains non-ascii characters.")
                              .arg(debuggerPath)
                              + "<br />"
                              + tr("This prevents it from executing."));
        return false;
    }
    if (!fileExists(debuggerPath)) {
        mExecuting = false;
        QMessageBox::critical(pMainWindow,
                              tr("Debugger not exists"),
                              tr("Can''t find debugger in : \"%1\"").arg(debuggerPath));
        return false;
    }
    mReader = new DebugReader(this);
    mReader->setDebuggerPath(debuggerPath);
    connect(mReader, &QThread::finished,this,&Debugger::clearUpReader);
    connect(mReader, &DebugReader::parseFinished,this,&Debugger::syncFinishedParsing,Qt::BlockingQueuedConnection);
    connect(mReader, &DebugReader::changeDebugConsoleLastLine,this,&Debugger::onChangeDebugConsoleLastline);
    connect(mReader, &DebugReader::cmdStarted,pMainWindow, &MainWindow::disableDebugActions);
    connect(mReader, &DebugReader::cmdFinished,pMainWindow, &MainWindow::enableDebugActions);

    connect(mReader, &DebugReader::breakpointInfoGetted, mBreakpointModel,
            &BreakpointModel::updateBreakpointNumber);
    connect(mReader, &DebugReader::localsUpdated, pMainWindow,
            &MainWindow::onLocalsReady);
    connect(mReader, &DebugReader::memoryUpdated,[this](const QStringList& memory) {
        emit memoryExamineReady(memory);
    });
    connect(mReader, &DebugReader::evalUpdated,[this](const QString& value) {
        emit evalValueReady(value);
    });
    connect(mReader, &DebugReader::inferiorStopped,pMainWindow,
            &MainWindow::setActiveBreakpoint);

    mReader->start();
    mReader->waitStart();

    pMainWindow->updateAppTitle();

    //Application.HintHidePause := 5000;
    return true;
}
void Debugger::stop() {
    if (mExecuting) {
        mReader->stopDebug();
    }
}
void Debugger::clearUpReader()
{
    if (mExecuting) {
        mExecuting = false;

        //stop debugger
        mReader->deleteLater();
        mReader=nullptr;

//        if WatchVarList.Count = 0 then // nothing worth showing, restore view
//          MainForm.LeftPageControl.ActivePageIndex := LeftPageIndexBackup;

//        // Close CPU window
        if (pMainWindow->cpuDialog()!=nullptr) {
            pMainWindow->cpuDialog()->close();
        }

        // Free resources
        pMainWindow->removeActiveBreakpoints();

        pMainWindow->txtLocals()->clear();

        pMainWindow->updateAppTitle();

        pMainWindow->updateDebugEval("");

        mBacktraceModel->clear();

        for(PWatchVar var:mWatchModel->watchVars()) {
            invalidateWatchVar(var);
        }

        pMainWindow->updateEditorActions();
    }
}

RegisterModel *Debugger::registerModel() const
{
    return mRegisterModel;
}

WatchModel *Debugger::watchModel() const
{
    return mWatchModel;
}

void Debugger::sendCommand(const QString &command, const QString &params, DebugCommandSource source)
{
    if (mExecuting && mReader) {
        mReader->postCommand(command,params,source);
    }
}

bool Debugger::commandRunning()
{
    if (mExecuting && mReader) {
        return mReader->commandRunning();
    }
    return false;
}

void Debugger::addBreakpoint(int line, const Editor* editor)
{
    addBreakpoint(line,editor->filename());
}

void Debugger::addBreakpoint(int line, const QString &filename)
{
    PBreakpoint bp=std::make_shared<Breakpoint>();
    bp->number = -1;
    bp->line = line;
    bp->filename = filename;
    bp->condition = "";
    bp->enabled = true;
    mBreakpointModel->addBreakpoint(bp);
    if (mExecuting) {
        sendBreakpointCommand(bp);
    }
}

void Debugger::deleteBreakpoints(const QString &filename)
{
    for (int i=mBreakpointModel->breakpoints().size()-1;i>=0;i--) {
        PBreakpoint bp = mBreakpointModel->breakpoints()[i];
        if (bp->filename == filename) {
            mBreakpointModel->removeBreakpoint(i);
        }
    }
}

void Debugger::deleteBreakpoints(const Editor *editor)
{
    deleteBreakpoints(editor->filename());
}

void Debugger::deleteBreakpoints()
{
    for (int i=mBreakpointModel->breakpoints().size()-1;i>=0;i--) {
        removeBreakpoint(i);
    }
}

void Debugger::removeBreakpoint(int line, const Editor *editor)
{
    removeBreakpoint(line,editor->filename());
}

void Debugger::removeBreakpoint(int line, const QString &filename)
{
    for (int i=mBreakpointModel->breakpoints().size()-1;i>=0;i--) {
        PBreakpoint bp = mBreakpointModel->breakpoints()[i];
        if (bp->filename == filename && bp->line == line) {
            removeBreakpoint(i);
        }
    }
}

void Debugger::removeBreakpoint(int index)
{
    sendClearBreakpointCommand(index);
    mBreakpointModel->removeBreakpoint(index);
}

PBreakpoint Debugger::breakpointAt(int line, const QString& filename, int &index)
{
    const QList<PBreakpoint>& breakpoints=mBreakpointModel->breakpoints();
    for (index=0;index<breakpoints.count();index++){
        PBreakpoint breakpoint = breakpoints[index];
        if (breakpoint->line == line
                && breakpoint->filename == filename)
            return breakpoint;
    }
    index=-1;
    return PBreakpoint();
}

PBreakpoint Debugger::breakpointAt(int line, const Editor *editor, int &index)
{
    return breakpointAt(line,editor->filename(),index);
}

void Debugger::setBreakPointCondition(int index, const QString &condition)
{
    PBreakpoint breakpoint=mBreakpointModel->setBreakPointCondition(index,condition);
    if (condition.isEmpty()) {
        sendCommand("-break-condition",
                    QString("%1").arg(breakpoint->line));
    } else {
        sendCommand("-break-condition",
                    QString("%1 %2").arg(breakpoint->line).arg(condition));
    }
}

void Debugger::sendAllBreakpointsToDebugger()
{
    for (PBreakpoint breakpoint:mBreakpointModel->breakpoints()) {
        sendBreakpointCommand(breakpoint);
    }
}

void Debugger::addWatchVar(const QString &namein)
{
    // Don't allow duplicates...
    PWatchVar oldVar = mWatchModel->findWatchVar(namein);
    if (oldVar)
        return;

    PWatchVar var = std::make_shared<WatchVar>();
    var->parent= nullptr;
    var->name = namein;
    var->value = tr("Execute to evaluate");
    var->gdbIndex = -1;

    mWatchModel->addWatchVar(var);
    sendWatchCommand(var);
}

void Debugger::renameWatchVar(const QString &oldname, const QString &newname)
{
    // check if name already exists;
    PWatchVar var = mWatchModel->findWatchVar(newname);
    if (var)
        return;

    var = mWatchModel->findWatchVar(oldname);
    if (var) {
        var->name = newname;
        if (mExecuting && var->gdbIndex!=-1)
            sendRemoveWatchCommand(var);
        invalidateWatchVar(var);

        if (mExecuting) {
            sendWatchCommand(var);
        }
    }
}

void Debugger::refreshWatchVars()
{
    for (PWatchVar var:mWatchModel->watchVars()) {
        if (var->gdbIndex == -1)
            sendWatchCommand(var);
    }
}

void Debugger::removeWatchVars(bool deleteparent)
{
    if (deleteparent) {
        mWatchModel->clear();
    } else {
        for(const PWatchVar& var:mWatchModel->watchVars()) {
            sendRemoveWatchCommand(var);
            invalidateWatchVar(var);
        }
    }
}

void Debugger::removeWatchVar(const QModelIndex &index)
{
    mWatchModel->removeWatchVar(index);
}

void Debugger::invalidateAllVars()
{
    mReader->setInvalidateAllVars(true);
}

void Debugger::sendAllWatchvarsToDebugger()
{
    for (PWatchVar var:mWatchModel->watchVars()) {
        sendWatchCommand(var);
    }
}

void Debugger::invalidateWatchVar(const QString &name)
{
    PWatchVar var = mWatchModel->findWatchVar(name);
    if (var) {
        invalidateWatchVar(var);
    }
}

void Debugger::invalidateWatchVar(PWatchVar var)
{
    var->gdbIndex = -1;
    QString value;
    if (mExecuting) {
        value = tr("Not found in current context");
    } else {
        value = tr("Execute to evaluate");
    }
    var->value = value;
    if (var->children.isEmpty()) {
        mWatchModel->notifyUpdated(var);
    } else {
        mWatchModel->beginUpdate();
        var->children.clear();
        mWatchModel->endUpdate();
    }
}

PWatchVar Debugger::findWatchVar(const QString &name)
{
    return mWatchModel->findWatchVar(name);
}

//void Debugger::notifyWatchVarUpdated(PWatchVar var)
//{
//    mWatchModel->notifyUpdated(var);
//}

void Debugger::notifyBeforeProcessWatchVar()
{
    mWatchModel->beginUpdate();
}

void Debugger::notifyAfterProcessWatchVar()
{
    mWatchModel->endUpdate();
}

void Debugger::updateDebugInfo()
{
    sendCommand("-stack-list-frames", "");
    sendCommand("-stack-list-variables", "--skip-unavailable --allvalues");
}

bool Debugger::useUTF8() const
{
    return mUseUTF8;
}

void Debugger::setUseUTF8(bool useUTF8)
{
    mUseUTF8 = useUTF8;
}

BacktraceModel* Debugger::backtraceModel()
{
    return mBacktraceModel;
}

BreakpointModel *Debugger::breakpointModel()
{
    return mBreakpointModel;
}

void Debugger::sendWatchCommand(PWatchVar var)
{
    sendCommand("display", var->name);
}

void Debugger::sendRemoveWatchCommand(PWatchVar var)
{
    sendCommand("undisplay",QString("%1").arg(var->gdbIndex));
}

void Debugger::sendBreakpointCommand(PBreakpoint breakpoint)
{
    if (breakpoint && mExecuting) {
        // break "filename":linenum
        QString condition;
        if (!breakpoint->condition.isEmpty()) {
            condition = " -c " + breakpoint->condition;
        }
        QString filename = breakpoint->filename;
        filename.replace('\\','/');
        sendCommand("-break-insert",
                    QString("%1 --source \"%2\" --line %3")
                    .arg(condition,filename)
                    .arg(breakpoint->line));
    }
}

void Debugger::sendClearBreakpointCommand(int index)
{
    sendClearBreakpointCommand(mBreakpointModel->breakpoints()[index]);
}

void Debugger::sendClearBreakpointCommand(PBreakpoint breakpoint)
{
    // Debugger already running? Remove it from GDB
    if (breakpoint && breakpoint->number>=0 && mExecuting) {
        //clear "filename":linenum
        QString filename = breakpoint->filename;
        filename.replace('\\','/');
        sendCommand("-break-delete",
                QString("%1").arg(breakpoint->number));
    }
}

void Debugger::syncFinishedParsing()
{
    bool spawnedcpuform = false;

    // GDB determined that the source code is more recent than the executable. Ask the user if he wants to rebuild.
    if (mReader->receivedSFWarning()) {
        if (QMessageBox::question(pMainWindow,
                                  tr("Compile"),
                                  tr("Source file is more recent than executable.")+"<BR /><BR />" + tr("Recompile?"),
                                  QMessageBox::Yes | QMessageBox::No,
                                  QMessageBox::Yes
                                  ) == QMessageBox::Yes) {
            stop();
            pMainWindow->compile();
            return;
        }
    }

    // The program to debug has stopped. Stop the debugger
    if (mReader->processExited()) {
        stop();
        return;
    }

    // show command output
    if (pSettings->debugger().showCommandLog() ) {
        if (pSettings->debugger().showAnnotations()) {
            for (const QString& line:mReader->fullOutput()) {
                pMainWindow->addDebugOutput(line);
            }
        } else {
            for (const QString& line:mReader->consoleOutput()) {
                pMainWindow->addDebugOutput(line);
            }
        }
    }

    // Some part of the CPU form has been updated
    if (pMainWindow->cpuDialog()!=nullptr && !mReader->signalReceived()) {
//        if (mReader->doregistersready) {
//            mRegisterModel->update(mReader->mRegisters);
//            mReader->mRegisters.clear();
//            mReader->doregistersready = false;
//        }

//        if (mReader->dodisassemblerready) {
//            pMainWindow->cpuDialog()->setDisassembly(mReader->mDisassembly);
//            mReader->mDisassembly.clear();
//            mReader->dodisassemblerready = false;
//        }
    }

//    if (mReader->updateExecution()) {
//        if (mReader->currentCmd() && mReader->currentCmd()->source == DebugCommandSource::Console) {
//            pMainWindow->setActiveBreakpoint(mReader->breakPointFile(), mReader->breakPointLine(),false);
//        } else {
//            pMainWindow->setActiveBreakpoint(mReader->breakPointFile(), mReader->breakPointLine());
//        }
//        refreshWatchVars(); // update variable information
//    }

    if (mReader->signalReceived()) {

//SignalDialog := CreateMessageDialog(fSignal, mtError, [mbOk]);
//SignalCheck := TCheckBox.Create(SignalDialog);

//// Display it on top of everything
//SignalDialog.FormStyle := fsStayOnTop;

//SignalDialog.Height := 150;

//with SignalCheck do begin
//  Parent := SignalDialog;
//  Caption := 'Show CPU window';
//  Top := Parent.ClientHeight - 22;
//  Left := 8;
//  Width := Parent.ClientWidth - 16;
//  Checked := devData.ShowCPUSignal;
//end;

//MessageBeep(MB_ICONERROR);
//if SignalDialog.ShowModal = ID_OK then begin
//  devData.ShowCPUSignal := SignalCheck.Checked;
//  if SignalCheck.Checked and not Assigned(CPUForm) then begin
//    MainForm.ViewCPUItemClick(nil);
//    spawnedcpuform := true;
//  end;
//end;

//SignalDialog.Free;

    }


    // CPU form updates itself when spawned, don't update twice!
    if ((mReader->updateCPUInfo() && !spawnedcpuform) && (pMainWindow->cpuDialog()!=nullptr)) {
        pMainWindow->cpuDialog()->updateInfo();
    }
}

void Debugger::onChangeDebugConsoleLastline(const QString& text)
{
    //pMainWindow->changeDebugOutputLastline(text);
    pMainWindow->addDebugOutput(text);
}

int Debugger::leftPageIndexBackup() const
{
    return mLeftPageIndexBackup;
}

void Debugger::setLeftPageIndexBackup(int leftPageIndexBackup)
{
    mLeftPageIndexBackup = leftPageIndexBackup;
}

bool Debugger::executing() const
{
    return mExecuting;
}

DebugReader::DebugReader(Debugger* debugger, QObject *parent) : QThread(parent),
    mStartSemaphore(0)
{
    mDebugger = debugger;
    mProcess = nullptr;
    mUseUTF8 = false;
    mCmdRunning = false;
    mInvalidateAllVars = false;
}

void DebugReader::postCommand(const QString &Command, const QString &Params,
                               DebugCommandSource Source)
{
    QMutexLocker locker(&mCmdQueueMutex);
    PDebugCommand pCmd = std::make_shared<DebugCommand>();
    pCmd->command = Command;
    pCmd->params = Params;
    pCmd->source = Source;
    mCmdQueue.enqueue(pCmd);
//    if (!mCmdRunning)
    //        runNextCmd();
}

void DebugReader::registerInferiorStoppedCommand(const QString &Command, const QString &Params)
{
    QMutexLocker locker(&mCmdQueueMutex);
    PDebugCommand pCmd = std::make_shared<DebugCommand>();
    pCmd->command = Command;
    pCmd->params = Params;
    pCmd->source = DebugCommandSource::Other;
    mInferiorStoppedHookCommands.append(pCmd);
}

void DebugReader::clearCmdQueue()
{
    QMutexLocker locker(&mCmdQueueMutex);
    mCmdQueue.clear();
}

void DebugReader::processConsoleOutput(const QByteArray& line)
{
    if (line.length()>3 && line.startsWith("~\"") && line.endsWith("\"")) {
        mConsoleOutput.append(QString::fromLocal8Bit(line.mid(2,line.length()-3)));
    }
}

void DebugReader::processResult(const QByteArray &result)
{
    GDBMIResultParser parser;
    GDBMIResultType resultType;
    GDBMIResultParser::ParseValue parseValue;
    bool parseOk = parser.parse(result,resultType,parseValue);
    if (!parseOk)
        return;
    switch(resultType) {
    case GDBMIResultType::BreakpointTable:
    case GDBMIResultType::Frame:
    case GDBMIResultType::Locals:
        break;
    case GDBMIResultType::Breakpoint:
        handleBreakpoint(parseValue.object());
        return;
    case GDBMIResultType::FrameStack:
        handleStack(parseValue.array());
        return;
    case GDBMIResultType::LocalVariables:
        handleLocalVariables(parseValue.array());
        return;
    case GDBMIResultType::Evaluation:
        handleEvaluation(parseValue.value());
        return;
    }

}

void DebugReader::processExecAsyncRecord(const QByteArray &line)
{
    QByteArray result;
    GDBMIResultParser::ParseObject multiValues;
    GDBMIResultParser parser;
    if (!parser.parseAsyncResult(line,result,multiValues))
        return;
    qDebug()<<result<<line;
    if (result == "running") {
        mInferiorRunning = true;
        mCurrentAddress=0;
        mCurrentFile.clear();
        mCurrentLine=-1;
        emit inferiorContinued();
        return;
    }
    if (result == "stopped") {
        mInferiorRunning = false;
        QByteArray reason = multiValues["reason"].value();
        if (reason == "exited") {
            //inferior exited, gdb should terminate too
            mProcessExited = true;
            return;
        }
        if (reason == "exited-normally") {
            //inferior exited, gdb should terminate too
            mProcessExited = true;
            return;
        }
        if (reason == "exited-signalled") {
            //inferior exited, gdb should terminate too
            mProcessExited = true;
            mSignalReceived = true;
            return;
        }
        mUpdateCPUInfo = true;
        GDBMIResultParser::ParseValue frame(multiValues["frame"]);
        if (frame.isValid()) {
            GDBMIResultParser::ParseObject frameObj = frame.object();
            mCurrentAddress = frameObj["addr"].hexValue();
            mCurrentLine = frameObj["line"].intValue();
            mCurrentFile = frameObj["fullname"].pathValue();
        }
        qDebug()<<mCurrentFile<<mCurrentLine;
        if (reason == "signal-received") {
            mSignalReceived = true;
        }
        runInferiorStoppedHook();
        if (mCurrentCmd && mCurrentCmd->source == DebugCommandSource::Console)
            emit inferiorStopped(mCurrentFile, mCurrentLine,false);
        else
            emit inferiorStopped(mCurrentFile, mCurrentLine,true);
    }
}

void DebugReader::processError(const QByteArray &errorLine)
{
    mConsoleOutput.append(QString::fromLocal8Bit(errorLine));
}

void DebugReader::processResultRecord(const QByteArray &line)
{
    if (line.startsWith("^exit")) {
        mProcessExited = true;
        return;
    }
    if (line.startsWith("^error")) {
        processError(line);
        return;
    }
    if (line.startsWith("^done")
            || line.startsWith("^running")) {
        int pos = line.indexOf(',');
        if (pos>=0) {
            QByteArray result = line.mid(pos+1);
            processResult(result);
        }
        return ;
    }
    if (line.startsWith("^connected")) {
        //TODO: connected to remote target
        return;
    }
}

void DebugReader::processDebugOutput(const QByteArray& debugOutput)
{
    // Only update once per update at most
    //WatchView.Items.BeginUpdate;

    if (mInvalidateAllVars) {
         //invalidate all vars when there's first output
         mDebugger->removeWatchVars(false);
         mInvalidateAllVars = false;
    }

    emit parseStarted();

    mConsoleOutput.clear();
    mFullOutput.clear();

    mSignalReceived = false;
    mUpdateCPUInfo = false;
    mReceivedSFWarning = false;

   QList<QByteArray> lines = splitByteArrayToLines(debugOutput);

   for (int i=0;i<lines.count();i++) {
        QByteArray line = lines[i];
        mFullOutput.append(line);
        line = removeToken(line);
        if (line.isEmpty()) {
            continue;
        }
        switch (line[0]) {
        case '~': // console stream output
            processConsoleOutput(line);
            break;
        case '@': // target stream output
        case '&': // log stream output
            break;
        case '^': // result record
            processResultRecord(line);
            break;
        case '*': // exec async output
            processExecAsyncRecord(line);
            break;
        case '+': // status async output
        case '=': // notify async output
            break;
        }
   }

   emit parseFinished();
}

void DebugReader::runInferiorStoppedHook()
{
    foreach (const PDebugCommand& cmd, mInferiorStoppedHookCommands) {
        mCmdQueue.push_front(cmd);
    }
}

QString DebugReader::processEvalOutput()
{
    int indent = 0;

    // First line gets special treatment
    QString result ="";
    if (result.startsWith('{'))
        indent+=4;

    // Collect all data, add formatting in between
//    AnnotationType nextAnnotation;
//    QString nextLine;
//    bool shouldExit = false;
//    do {
//        nextAnnotation = getNextAnnotation();
//        nextLine = getNextLine();
//        switch(nextAnnotation) {
//        // Change indent if { or } is found
//        case AnnotationType::TFieldBegin:
//            result += "\r\n" + QString(4,' ');
//            break;
//        case AnnotationType::TFieldValue:
//            if (nextLine.startsWith('{') && (peekNextAnnotation() !=
//                                             AnnotationType::TArrayBegin))
//                indent+=4;
//            break;
//        case AnnotationType::TFieldEnd:
//            if (nextLine.endsWith('}')) {
//                indent-=4;
//                result += "\r\n" + QString(4,' ');
//            }
//            break;
//        case AnnotationType::TEOF:
//        case AnnotationType::TValueHistoryEnd:
//        case AnnotationType::TDisplayEnd:
//            shouldExit = true;
//        default:
//            break;
//        }
//        result += nextLine;
//    } while (!shouldExit);
    return result;
}

void DebugReader::processWatchOutput(PWatchVar watchVar)
{
//    // Expand if it was expanded or if it didn't have any children
//    bool ParentWasExpanded = false;

    // Do not remove root node of watch variable

    watchVar->children.clear();
    watchVar->value = "";
    // Process output parsed by ProcessEvalStruct
    QString s = processEvalOutput();

    QStringList tokens = tokenize(s);
    PWatchVar parentVar = watchVar;
    PWatchVar currentVar = watchVar;

    QVector<PWatchVar> varStack;
    int i=0;
    while (i<tokens.length()) {
        QString token = tokens[i];
        QChar ch = token[0];
        if (ch =='_' || (ch>='a' && ch<='z')
                || (ch>='A' && ch<='Z') || (ch>127)) {
            //is identifier,create new child node
            PWatchVar newVar = std::make_shared<WatchVar>();
            newVar->parent = parentVar.get();
            newVar->name = token;
            newVar->fullName = parentVar->fullName + '.'+token;
            newVar->value = "";
            newVar->gdbIndex = -1;
            parentVar->children.append(newVar);
            currentVar = newVar;
        } else if (ch == '{') {
            if (parentVar->value.isEmpty()) {
                parentVar->value = "{";
            } else {
                PWatchVar newVar = std::make_shared<WatchVar>();
                newVar->parent = parentVar.get();
                if (parentVar) {
                    int count = parentVar->children.count();
                    newVar->name = QString("[%1]").arg(count);
                    newVar->fullName = parentVar->fullName + newVar->name;
                } else {
                    newVar->name = QString("[0]");
                    newVar->fullName = newVar->name;
                }
                newVar->value = "{";
                parentVar->children.append(newVar);
                varStack.push_back(parentVar);
                parentVar = newVar;
            }
            currentVar = nullptr;
        } else if (ch == '}') {
            currentVar = nullptr;
            PWatchVar newVar = std::make_shared<WatchVar>();
            newVar->parent = parentVar.get();
            newVar->name = "";
            newVar->value = "}";
            newVar->gdbIndex = -1;
            parentVar->children.append(newVar);
            if (!varStack.isEmpty()) {
                parentVar = varStack.back();
                varStack.pop_back();
            }
        } else if (ch == '=') {
            // just skip it
        } else if (ch == ',') {
                currentVar = nullptr;
        } else {
            if (currentVar) {
                if (currentVar->value.isEmpty()) {
                    currentVar->value = token;
                } else {
                    currentVar->value += " "+token;
                }
            } else {
                PWatchVar newVar = std::make_shared<WatchVar>();
                newVar->parent = parentVar.get();
                newVar->name = QString("[%1]")
                        .arg(parentVar->children.count());
                newVar->fullName = parentVar->fullName + newVar->name;
                newVar->value = token;
                newVar->gdbIndex = -1;
                parentVar->children.append(newVar);
            }
        }
        i++;
    }
    // add placeholder name for variable name so we can format structs using one rule

    // Add children based on indent
//    QStringList lines = TextToLines(s);

//    for (const QString& line:lines) {
//        // Format node text. Remove trailing comma
//        QString nodeText = line.trimmed();
//        if (nodeText.endsWith(',')) {
//            nodeText.remove(nodeText.length()-1,1);
//        }

//        if (nodeText.endsWith('{')) { // new member struct
//            if (parentVar->text.isEmpty()) { // root node, replace text only
//                parentVar->text = nodeText;
//            } else {
//                PWatchVar newVar = std::make_shared<WatchVar>();
//                newVar->parent = parentVar.get();
//                newVar->name = "";
//                newVar->text = nodeText;
//                newVar->gdbIndex = -1;
//                parentVar->children.append(newVar);
//                varStack.push_back(parentVar);
//                parentVar = newVar;
//            }
//        } else if (nodeText.startsWith('}')) { // end of struct, change parent
//                PWatchVar newVar = std::make_shared<WatchVar>();
//                newVar->parent = parentVar.get();
//                newVar->name = "";
//                newVar->text = "}";
//                newVar->gdbIndex = -1;
//                parentVar->children.append(newVar);
//                if (!varStack.isEmpty()) {
//                    parentVar = varStack.back();
//                    varStack.pop_back();
//                }
//        } else { // next parent member/child
//            if (parentVar->text.isEmpty()) { // root node, replace text only
//                parentVar->text = nodeText;
//            } else {
//                PWatchVar newVar = std::make_shared<WatchVar>();
//                newVar->parent = parentVar.get();
//                newVar->name = "";
//                newVar->text = nodeText;
//                newVar->gdbIndex = -1;
//                parentVar->children.append(newVar);
//            }
//        }
//    }
        // TODO: remember expansion state
}

void DebugReader::runNextCmd()
{
    QMutexLocker locker(&mCmdQueueMutex);

    if (mCurrentCmd) {
        mCurrentCmd.reset();
        emit cmdFinished();
    }
    if (mCmdQueue.isEmpty())
        return;

    PDebugCommand pCmd = mCmdQueue.dequeue();
    mCmdRunning = true;
    mCurrentCmd = pCmd;    
    emit cmdStarted();

    QByteArray s;
    s=pCmd->command.toLocal8Bit();
    if (!pCmd->params.isEmpty()) {
        s+= ' '+pCmd->params.toLocal8Bit();
    }
    s+= "\n";
    if (mProcess->write(s)<0) {
        emit writeToDebugFailed();
    }

//  if devDebugger.ShowCommandLog or pCmd^.ShowInConsole then begin
    if (pSettings->debugger().showCommandLog() ) {
        //update debug console
        if (!pSettings->debugger().showAnnotations()) {
            emit changeDebugConsoleLastLine("(gdb)"+pCmd->command + ' ' + pCmd->params);
        } else {
            emit changeDebugConsoleLastLine("(gdb)"+pCmd->command + ' ' + pCmd->params);
        }
    }
}

QStringList DebugReader::tokenize(const QString &s)
{
    QStringList result;
    int tStart,tEnd;
    int i=0;
    while (i<s.length()) {
        QChar ch = s[i];
        if (ch == ' ' || ch == '\t'
                || ch == '\r'
                || ch == '\n') {
//            if (!current.isEmpty()) {
//                result.append(current);
//                current = "";
//            }
            i++;
            continue;
        } else if (ch == '\'') {
            tStart = i;
            i++; //skip \'
            while (i<s.length()) {
                if (s[i]=='\'') {
                    i++;
                    break;
                } else if (s[i] == '\\') {
                    i+=2;
                    continue;
                }
                i++;
            }
            tEnd = std::min(i,s.length());
            result.append(s.mid(tStart,tEnd-tStart));
        } else if (ch == '\"') {
            tStart = i;
            i++; //skip \'
            while (i<s.length()) {
                if (s[i]=='\"') {
                    i++;
                    break;
                } else if (s[i] == '\\') {
                    i+=2;
                    continue;
                }
                i++;
            }
            tEnd = std::min(i,s.length());
            result.append(s.mid(tStart,tEnd-tStart));
        } else if (ch == '<') {
            tStart = i;
            i++;
            while (i<s.length()) {
                if (s[i]=='>') {
                    i++;
                    break;
                }
                i++;
            }
            tEnd = std::min(i,s.length());
            result.append(s.mid(tStart,tEnd-tStart));
        } else if (ch == '(') {
            tStart = i;
            i++;
            while (i<s.length()) {
                if (s[i]==')') {
                    i++;
                    break;
                }
                i++;
            }
            tEnd = std::min(i,s.length());
            result.append(s.mid(tStart,tEnd-tStart));
        } else if (ch == '_' ||
                   ch == '.' ||
                   ch == '+' ||
                   ch == '-' ||
                   ch.isLetterOrNumber() ) {
            tStart = i;
            while (i<s.length()) {
                ch = s[i];
                if (!(ch == '_' ||
                     ch == '.' ||
                     ch == '+' ||
                     ch == '-' ||
                     ch.isLetterOrNumber() ))
                    break;
                i++;
            }
            tEnd = std::min(i,s.length());
            result.append(s.mid(tStart,tEnd-tStart));
        } else {
            result.append(s[i]);
            i++;
        }
    }
    return result;
}

bool DebugReader::outputTerminated(const QByteArray &text)
{
    QStringList lines = textToLines(QString::fromUtf8(text));
    foreach (const QString& line,lines) {
        if (line.trimmed() == "(gdb)")
            return true;
    }
    return false;
}

void DebugReader::handleBreakpoint(const GDBMIResultParser::ParseObject& breakpoint)
{
    // gdb use system encoding for file path
    QString filename = breakpoint["fullname"].value();
    int line = breakpoint["line"].intValue();
    int number = breakpoint["number"].intValue();
    emit breakpointInfoGetted(filename, line , number);
}

void DebugReader::handleStack(const QList<GDBMIResultParser::ParseValue> & stack)
{
    mDebugger->backtraceModel()->clear();
    foreach (const GDBMIResultParser::ParseValue& frameValue, stack) {
        GDBMIResultParser::ParseObject frameObject = frameValue.object();
        PTrace trace = std::make_shared<Trace>();
        trace->funcname = frameObject["func"].value();
        trace->filename = frameObject["fullname"].pathValue();
        trace->line = frameObject["fullname"].intValue();
        trace->level = frameObject["level"].intValue(0);
        trace->address = frameObject["addr"].value();
        mDebugger->backtraceModel()->addTrace(trace);
    }
}

void DebugReader::handleLocalVariables(const QList<GDBMIResultParser::ParseValue> &variables)
{
    QStringList locals;
    foreach (const GDBMIResultParser::ParseValue& varValue, variables) {
        GDBMIResultParser::ParseObject varObject = varValue.object();
        locals.append(QString("%1 = %2")
                            .arg(varObject["name"].value(),varObject["value"].value()));
    }
    emit localsUpdated(locals);
}

void DebugReader::handleEvaluation(const QString &value)
{
    emit evalUpdated(value);
}

void DebugReader::handleMemory(const QList<GDBMIResultParser::ParseValue> &rows)
{
    QStringList memory;
    foreach (const GDBMIResultParser::ParseValue& row, rows) {
        GDBMIResultParser::ParseObject rowObject = row.object();
        QList<GDBMIResultParser::ParseValue> data = rowObject["data"].array();
        QStringList values;
        foreach (const GDBMIResultParser::ParseValue& val, data) {
            values.append(val.value());
        }
        memory.append(QString("%1 %2")
                            .arg(rowObject["addr"].value(),values.join(" ")));
    }
    emit memoryUpdated(memory);
}

QByteArray DebugReader::removeToken(const QByteArray &line)
{
    int p=0;
    while (p<line.length()) {
        QChar ch=line[p];
        if (ch<'0' || ch>'9') {
            break;
        }
        p++;
    }
    if (p<line.length())
        return line.mid(p);
    return line;
}

const QStringList &DebugReader::fullOutput() const
{
    return mFullOutput;
}

bool DebugReader::receivedSFWarning() const
{
    return mReceivedSFWarning;
}

bool DebugReader::updateCPUInfo() const
{
    return mUpdateCPUInfo;
}

const PDebugCommand &DebugReader::currentCmd() const
{
    return mCurrentCmd;
}

const QStringList &DebugReader::consoleOutput() const
{
    return mConsoleOutput;
}

bool DebugReader::signalReceived() const
{
    return mSignalReceived;
}

bool DebugReader::processExited() const
{
    return mProcessExited;
}

bool DebugReader::invalidateAllVars() const
{
    return mInvalidateAllVars;
}

void DebugReader::setInvalidateAllVars(bool invalidateAllVars)
{
    mInvalidateAllVars = invalidateAllVars;
}

QString DebugReader::debuggerPath() const
{
    return mDebuggerPath;
}

void DebugReader::setDebuggerPath(const QString &debuggerPath)
{
    mDebuggerPath = debuggerPath;
}

void DebugReader::stopDebug()
{
    mStop = true;
}

bool DebugReader::commandRunning()
{
    return !mCmdQueue.isEmpty();
}

void DebugReader::waitStart()
{
    mStartSemaphore.acquire(1);
}

void DebugReader::run()
{
    mStop = false;
    mInferiorRunning = false;
    mProcessExited = false;
    bool errorOccurred = false;
    QString cmd = mDebuggerPath;
//    QString arguments = "--annotate=2";
    QString arguments = "--interpret=mi --silent";
    QString workingDir = QFileInfo(mDebuggerPath).path();

    mProcess = new QProcess();
    mProcess->setProgram(cmd);
    mProcess->setArguments(QProcess::splitCommand(arguments));
    mProcess->setProcessChannelMode(QProcess::MergedChannels);
    QString cmdDir = extractFileDir(cmd);
    if (!cmdDir.isEmpty()) {
        QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
        QString path = env.value("PATH");
        cmdDir.replace("/",QDir::separator());
        if (path.isEmpty()) {
            path = cmdDir;
        } else {
            path = cmdDir + PATH_SEPARATOR + path;
        }
        env.insert("PATH",path);
        mProcess->setProcessEnvironment(env);
    }
    mProcess->setWorkingDirectory(workingDir);

    connect(mProcess, &QProcess::errorOccurred,
                    [&](){
                        errorOccurred= true;
                    });
    QByteArray buffer;
    QByteArray readed;

    mProcess->start();
    mProcess->waitForStarted(5000);
    mStartSemaphore.release(1);
    while (true) {
        mProcess->waitForFinished(1);
        if (mProcess->state()!=QProcess::Running) {
            break;
        }
        if (mStop) {
            mProcess->closeReadChannel(QProcess::StandardOutput);
            mProcess->closeReadChannel(QProcess::StandardError);
            mProcess->closeWriteChannel();
            mProcess->terminate();
            mProcess->kill();
            break;
        }
        if (errorOccurred)
            break;
        readed = mProcess->readAll();
        buffer += readed;

        if ( readed.endsWith("\n")&& outputTerminated(buffer)) {
            processDebugOutput(buffer);
            buffer.clear();
            mCmdRunning = false;
            runNextCmd();
        } else if (!mCmdRunning && readed.isEmpty()){
            runNextCmd();
        } else if (readed.isEmpty()){
            msleep(1);
        }
    }
    if (errorOccurred) {
        emit processError(mProcess->error());
    }
}



BreakpointModel::BreakpointModel(QObject *parent):QAbstractTableModel(parent)
{

}

int BreakpointModel::rowCount(const QModelIndex &) const
{
    return mList.size();
}

int BreakpointModel::columnCount(const QModelIndex &) const
{
    return 3;
}

QVariant BreakpointModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();
    if (index.row()<0 || index.row() >= static_cast<int>(mList.size()))
        return QVariant();
    PBreakpoint breakpoint = mList[index.row()];
    if (!breakpoint)
        return QVariant();
    switch (role) {
    case Qt::DisplayRole:
        switch (index.column()) {
        case 0: {
            return extractFileName(breakpoint->filename);
        }
        case 1:
            if (breakpoint->line>0)
                return breakpoint->line;
            else
                return "";
        case 2:
            return breakpoint->condition;
        default:
            return QVariant();
        }
    case Qt::ToolTipRole:
        switch (index.column()) {
        case 0:
            return breakpoint->filename;
        case 1:
            if (breakpoint->line>0)
                return breakpoint->line;
            else
                return "";
        case 2:
            return breakpoint->condition;
        default:
            return QVariant();
        }
    default:
        return QVariant();
    }
}

QVariant BreakpointModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role ==  Qt::DisplayRole) {
        switch(section) {
        case 0:
            return tr("Filename");
        case 1:
            return tr("Line");
        case 2:
            return tr("Condition");
        }
    }
    return QVariant();
}

void BreakpointModel::addBreakpoint(PBreakpoint p)
{
    beginInsertRows(QModelIndex(),mList.size(),mList.size());
    mList.push_back(p);
    endInsertRows();
}

void BreakpointModel::clear()
{
    beginRemoveRows(QModelIndex(),0,mList.size()-1);
    mList.clear();
    endRemoveRows();
}

void BreakpointModel::removeBreakpoint(int row)
{
    beginRemoveRows(QModelIndex(),row,row);
    mList.removeAt(row);
    endRemoveRows();
}

void BreakpointModel::invalidateAllBreakpointNumbers()
{
    foreach (PBreakpoint bp,mList) {
        bp->number = -1;
    }
    //emit dateChanged(createIndex(0,0),)
}

PBreakpoint BreakpointModel::setBreakPointCondition(int index, const QString &condition)
{
    PBreakpoint breakpoint = mList[index];
    breakpoint->condition = condition;
    emit dataChanged(createIndex(index,0),createIndex(index,2));
    return breakpoint;
}

const QList<PBreakpoint> &BreakpointModel::breakpoints() const
{
    return mList;
}

PBreakpoint BreakpointModel::breakpoint(int index) const
{
    if (index<0 && index>=mList.count())
        return PBreakpoint();
    return mList[index];
}

void BreakpointModel::save(const QString &filename)
{
    QFile file(filename);
    if (file.open(QFile::WriteOnly | QFile::Truncate)) {
        QJsonArray array;
        foreach (const PBreakpoint& breakpoint, mList) {
            QJsonObject obj;
            obj["filename"]=breakpoint->filename;
            obj["line"]=breakpoint->line;
            obj["condition"]=breakpoint->condition;
            obj["enabled"]=breakpoint->enabled;
            array.append(obj);
        }
        QJsonDocument doc;
        doc.setArray(array);
        if (file.write(doc.toJson())<0) {
            throw FileError(tr("Save file '%1' failed.")
                            .arg(filename));
        }
    } else {
        throw FileError(tr("Can't open file '%1' for write.")
                        .arg(filename));
    }
}

void BreakpointModel::load(const QString &filename)
{
    clear();
    QFile file(filename);
    if (!file.exists())
        return;
    if (file.open(QFile::ReadOnly)) {
        QByteArray content = file.readAll();
        QJsonParseError error;
        QJsonDocument doc(QJsonDocument::fromJson(content,&error));
        if (error.error  != QJsonParseError::NoError) {
            throw FileError(tr("Error in json file '%1':%2 : %3")
                            .arg(filename)
                            .arg(error.offset)
                            .arg(error.errorString()));
        }
        QJsonArray array = doc.array();
        for  (int i=0;i<array.count();i++) {
            QJsonValue value = array[i];
            QJsonObject obj=value.toObject();
            PBreakpoint breakpoint = std::make_shared<Breakpoint>();
            breakpoint->filename = QFileInfo(obj["filename"].toString()).absoluteFilePath();
            breakpoint->line = obj["line"].toInt();
            breakpoint->condition = obj["condition"].toString();
            breakpoint->enabled = obj["enabled"].toBool();

            addBreakpoint(breakpoint);
        }
    } else {
        throw FileError(tr("Can't open file '%1' for read.")
                        .arg(filename));
    }
}

void BreakpointModel::updateBreakpointNumber(const QString& filename, int line, int number)
{
    foreach (PBreakpoint bp, mList) {
        if (bp->filename == filename && bp->line == line) {
            bp->number = number;
            return;
        }
    }
}

void BreakpointModel::onFileDeleteLines(const QString& filename, int startLine, int count)
{
    for (int i = mList.count()-1;i>=0;i--){
        PBreakpoint breakpoint = mList[i];
        if  (breakpoint->filename == filename
             && breakpoint->line>=startLine) {
            if (breakpoint->line >= startLine+count) {
                breakpoint->line -= count;
                emit dataChanged(createIndex(i,0),createIndex(i,2));
            } else {
                removeBreakpoint(i);
            }
        }
    }
}

void BreakpointModel::onFileInsertLines(const QString& filename, int startLine, int count)
{
    for (int i = mList.count()-1;i>=0;i--){
        PBreakpoint breakpoint = mList[i];
        if  (breakpoint->filename == filename
             && breakpoint->line>=startLine) {
            breakpoint->line+=count;
            emit dataChanged(createIndex(i,0),createIndex(i,2));
        }
    }
}


BacktraceModel::BacktraceModel(QObject *parent):QAbstractTableModel(parent)
{

}

int BacktraceModel::rowCount(const QModelIndex &) const
{
    return mList.size();
}

int BacktraceModel::columnCount(const QModelIndex &) const
{
    return 3;
}

QVariant BacktraceModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();
    if (index.row()<0 || index.row() >= static_cast<int>(mList.size()))
        return QVariant();
    PTrace trace = mList[index.row()];
    if (!trace)
        return QVariant();
    switch (role) {
    case Qt::DisplayRole:
        switch (index.column()) {
        case 0:
            return trace->funcname;
        case 1:
            return trace->filename;
        case 2:
            if (trace->line>0)
                return trace->line;
            else
                return "";
        default:
            return QVariant();
        }
    default:
        return QVariant();
    }
}

QVariant BacktraceModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role ==  Qt::DisplayRole) {
        switch(section) {
        case 0:
            return tr("Function");
        case 1:
            return tr("Filename");
        case 2:
            return tr("Line");
        }
    }
    return QVariant();
}

void BacktraceModel::addTrace(PTrace p)
{
    beginInsertRows(QModelIndex(),mList.size(),mList.size());
    mList.push_back(p);
    endInsertRows();
}

void BacktraceModel::clear()
{
    beginRemoveRows(QModelIndex(),0,mList.size()-1);
    mList.clear();
    endRemoveRows();
}

void BacktraceModel::removeTrace(int row)
{
    beginRemoveRows(QModelIndex(),row,row);
    mList.removeAt(row);
    endRemoveRows();
}

const QList<PTrace> &BacktraceModel::backtraces() const
{
    return mList;
}

PTrace BacktraceModel::backtrace(int index) const
{
    if (index>=0 && index < mList.count()){
        return mList[index];
    }
    return PTrace();
}

WatchModel::WatchModel(QObject *parent):QAbstractItemModel(parent)
{
    mUpdateCount = 0;
}

QVariant WatchModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid()) {
        return QVariant();
    }
    WatchVar* item = static_cast<WatchVar*>(index.internalPointer());
    switch (role) {
    case Qt::DisplayRole:
        //qDebug()<<"item->text:"<<item->text;
        switch(index.column()) {
        case 0:
            return item->name;
        case 1:
            return item->value;
        }
    }
    return QVariant();
}

QModelIndex WatchModel::index(int row, int column, const QModelIndex &parent) const
{
    if (!hasIndex(row,column,parent))
        return QModelIndex();

    WatchVar* parentItem;
    PWatchVar pChild;
    if (!parent.isValid()) {
        parentItem = nullptr;
        pChild = mWatchVars[row];
    } else {
        parentItem = static_cast<WatchVar*>(parent.internalPointer());
        pChild = parentItem->children[row];
    }
    if (pChild) {
        return createIndex(row,column,pChild.get());
    }
    return QModelIndex();
}

static int getWatchIndex(WatchVar* var, const QList<PWatchVar> list) {
    for (int i=0;i<list.size();i++) {
        PWatchVar v = list[i];
        if (v.get() == var) {
            return i;
        }
    }
    return -1;
}

QModelIndex WatchModel::parent(const QModelIndex &index) const
{
    if (!index.isValid()) {
        return QModelIndex();
    }
    WatchVar* childItem = static_cast<WatchVar*>(index.internalPointer());
    WatchVar* parentItem = childItem->parent;

    //parent is root
    if (parentItem == nullptr) {
        return QModelIndex();
    }
    int row;
    WatchVar* grandItem = parentItem->parent;
    if (grandItem == nullptr) {
        row = getWatchIndex(parentItem,mWatchVars);
    } else {
        row = getWatchIndex(parentItem,grandItem->children);
    }
    return createIndex(row,0,parentItem);
}

int WatchModel::rowCount(const QModelIndex &parent) const
{
    if (!parent.isValid()) {
        return mWatchVars.count();
    } else {
        WatchVar* parentItem = static_cast<WatchVar*>(parent.internalPointer());
        return parentItem->children.count();
    }
}

int WatchModel::columnCount(const QModelIndex&) const
{
    return 2;
}

void WatchModel::addWatchVar(PWatchVar watchVar)
{
    for (PWatchVar var:mWatchVars) {
        if (watchVar->name == var->name) {
            return;
        }
    }
    this->beginInsertRows(QModelIndex(),mWatchVars.size(),mWatchVars.size());
    mWatchVars.append(watchVar);
    this->endInsertRows();
}

void WatchModel::removeWatchVar(const QString &name)
{
    for (int i=mWatchVars.size()-1;i>=0;i--) {
        PWatchVar var = mWatchVars[i];
        if (name == var->name) {
            this->beginResetModel();
            //this->beginRemoveRows(QModelIndex(),i,i);
            mWatchVars.removeAt(i);
            //this->endRemoveRows();
            this->endResetModel();
        }
    }
}

void WatchModel::removeWatchVar(int gdbIndex)
{
    for (int i=mWatchVars.size()-1;i>=0;i--) {
        PWatchVar var = mWatchVars[i];
        if (gdbIndex == var->gdbIndex) {
            this->beginResetModel();
            //this->beginRemoveRows(QModelIndex(),i,i);
            mWatchVars.removeAt(i);
            //this->endRemoveRows();
            this->endResetModel();
        }
    }
}

void WatchModel::removeWatchVar(const QModelIndex &index)
{
    int r=index.row();
    this->beginRemoveRows(QModelIndex(),r,r);
    mWatchVars.removeAt(r);
    this->endRemoveRows();
}

void WatchModel::clear()
{
    this->beginResetModel();
    mWatchVars.clear();
    this->endResetModel();
}

const QList<PWatchVar> &WatchModel::watchVars()
{
    return mWatchVars;
}

PWatchVar WatchModel::findWatchVar(const QString &name)
{
    for (PWatchVar var:mWatchVars) {
        if (name == var->name) {
            return var;
        }
    }
    return PWatchVar();
}

PWatchVar WatchModel::findWatchVar(int gdbIndex)
{
    for (PWatchVar var:mWatchVars) {
        if (gdbIndex == var->gdbIndex) {
            return var;
        }
    }
    return PWatchVar();
}

void WatchModel::beginUpdate()
{
    if (mUpdateCount == 0) {
        beginResetModel();
    }
    mUpdateCount++;
}

void WatchModel::endUpdate()
{
    mUpdateCount--;
    if (mUpdateCount == 0) {
        endResetModel();
    }
}

void WatchModel::notifyUpdated(PWatchVar var)
{
    if (!var)
        return;
    int row;
    if (var->parent==nullptr) {
        row = mWatchVars.indexOf(var);
    } else {
        row = var->parent->children.indexOf(var);
    }
    if (row<0)
        return;
    //qDebug()<<"dataChanged"<<row<<":"<<var->text;
    emit dataChanged(createIndex(row,0,var.get()),createIndex(row,0,var.get()));
}

void WatchModel::save(const QString &filename)
{
    QFile file(filename);
    if (file.open(QFile::WriteOnly | QFile::Truncate)) {
        QJsonArray array;
        foreach (const PWatchVar& watchVar, mWatchVars) {
            QJsonObject obj;
            obj["name"]=watchVar->name;
            array.append(obj);
        }
        QJsonDocument doc;
        doc.setArray(array);
        if (file.write(doc.toJson())<0) {
            throw FileError(tr("Save file '%1' failed.")
                            .arg(filename));
        }
    } else {
        throw FileError(tr("Can't open file '%1' for write.")
                        .arg(filename));
    }
}

void WatchModel::load(const QString &filename)
{
    clear();
    QFile file(filename);
    if (!file.exists())
        return;
    if (file.open(QFile::ReadOnly)) {
        QByteArray content = file.readAll();
        QJsonParseError error;
        QJsonDocument doc(QJsonDocument::fromJson(content,&error));
        if (error.error  != QJsonParseError::NoError) {
            throw FileError(tr("Error in json file '%1':%2 : %3")
                            .arg(filename)
                            .arg(error.offset)
                            .arg(error.errorString()));
        }
        QJsonArray array = doc.array();
        for  (int i=0;i<array.count();i++) {
            QJsonValue value = array[i];
            QJsonObject obj=value.toObject();
            PWatchVar var = std::make_shared<WatchVar>();
            var->parent= nullptr;
            var->name = obj["name"].toString();
            var->value = tr("Execute to evaluate");
            var->gdbIndex = -1;

            addWatchVar(var);
        }
    } else {
        throw FileError(tr("Can't open file '%1' for read.")
                        .arg(filename));
    }
}


QVariant WatchModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role ==  Qt::DisplayRole) {
        switch(section) {
        case 0:
            return tr("Expression");
        case 1:
            return tr("Value");
        }
    }
    return QVariant();
}

RegisterModel::RegisterModel(QObject *parent):QAbstractTableModel(parent)
{

}

int RegisterModel::rowCount(const QModelIndex &) const
{
    return mRegisters.count();
}

int RegisterModel::columnCount(const QModelIndex &) const
{
    return 3;
}

QVariant RegisterModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();
    if (index.row()<0 || index.row() >= static_cast<int>(mRegisters.size()))
        return QVariant();
    PRegister reg = mRegisters[index.row()];
    if (!reg)
        return QVariant();
    switch (role) {
    case Qt::DisplayRole:
        switch (index.column()) {
        case 0:
            return reg->name;
        case 1:
            return reg->hexValue;
        case 2:
            return reg->decValue;
        default:
            return QVariant();
        }
    default:
        return QVariant();
    }
}

QVariant RegisterModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role ==  Qt::DisplayRole) {
        switch(section) {
        case 0:
            return tr("Register");
        case 1:
            return tr("Value(Hex)");
        case 2:
            return tr("Value(Dec)");
        }
    }
    return QVariant();
}

void RegisterModel::update(const QList<PRegister> &regs)
{
    beginResetModel();
    mRegisters.clear();
    mRegisters.append(regs);
    endResetModel();
}


void RegisterModel::clear()
{
    beginResetModel();
    mRegisters.clear();
    endResetModel();
}