debuggerplugin.cpp 124 KB
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/**************************************************************************
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**
** This file is part of Qt Creator
**
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (info@qt.nokia.com)
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**
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**
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** GNU Lesser General Public License Usage
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**
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** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
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** If you have questions regarding the use of this file, please contact
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** Nokia at info@qt.nokia.com.
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**
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**************************************************************************/
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#include "debuggerplugin.h"

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#include "debuggerstartparameters.h"
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#include "debuggeractions.h"
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#include "debuggerconstants.h"
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#include "debuggerinternalconstants.h"
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#include "debuggercore.h"
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#include "debuggerdialogs.h"
#include "debuggerengine.h"
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#include "debuggermainwindow.h"
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#include "debuggerrunner.h"
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#include "debuggerruncontrolfactory.h"
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#include "debuggerstringutils.h"
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#include "memoryagent.h"
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#include "breakpoint.h"
#include "breakhandler.h"
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#include "breakwindow.h"
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#include "consolewindow.h"
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#include "disassemblerlines.h"
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#include "logwindow.h"
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#include "moduleswindow.h"
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#include "moduleshandler.h"
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#include "registerwindow.h"
#include "snapshotwindow.h"
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#include "stackhandler.h"
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#include "stackwindow.h"
#include "sourcefileswindow.h"
#include "threadswindow.h"
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#include "watchhandler.h"
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#include "watchwindow.h"
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#include "watchutils.h"
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#include "debuggertooltipmanager.h"
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#include "snapshothandler.h"
#include "threadshandler.h"
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#include "commonoptionspage.h"
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#include <coreplugin/actionmanager/actionmanager.h>
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#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
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#include <coreplugin/id.h>
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#include <coreplugin/imode.h>
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#include <coreplugin/coreconstants.h>
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#include <coreplugin/dialogs/ioptionspage.h>
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#include <coreplugin/editormanager/editormanager.h>
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#include <coreplugin/findplaceholder.h>
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#include <coreplugin/icontext.h>
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#include <coreplugin/icore.h>
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#include <coreplugin/imode.h>
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#include <coreplugin/icorelistener.h>
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#include <coreplugin/minisplitter.h>
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#include <coreplugin/modemanager.h>
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#include <cppeditor/cppeditorconstants.h>
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#include <cplusplus/ModelManagerInterface.h>
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#include <extensionsystem/pluginmanager.h>

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#include <projectexplorer/project.h>
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#include <projectexplorer/projectexplorer.h>
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#include <projectexplorer/projectexplorerconstants.h>
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#include <projectexplorer/toolchainmanager.h>
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#include <projectexplorer/toolchain.h>
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#include <projectexplorer/session.h>
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#include <projectexplorer/target.h>
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#include <projectexplorer/abi.h>
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#include <qtsupport/qtsupportconstants.h>
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#include <texteditor/basetexteditor.h>
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#include <texteditor/fontsettings.h>
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#include <texteditor/texteditorsettings.h>
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#include <utils/qtcassert.h>
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#include <utils/savedaction.h>
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#include <utils/styledbar.h>
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#include <utils/proxyaction.h>
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#include <utils/statuslabel.h>
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#include <utils/fileutils.h>
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#include <qml/scriptconsole.h>

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#include <QtCore/QTimer>
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#include <QtCore/QtPlugin>
#include <QtGui/QComboBox>
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#include <QtGui/QDockWidget>
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#include <QtGui/QFileDialog>
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#include <QtGui/QMenu>
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#include <QtGui/QMessageBox>
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#include <QtGui/QPushButton>
#include <QtGui/QTextBlock>
#include <QtGui/QTextCursor>
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#include <QtGui/QToolButton>
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#include <QtGui/QTreeWidget>
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#include <QtGui/QInputDialog>
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#include <climits>

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#define DEBUG_STATE 1
#ifdef DEBUG_STATE
//#   define STATE_DEBUG(s)
//    do { QString msg; QTextStream ts(&msg); ts << s;
//      showMessage(msg, LogDebug); } while (0)
#   define STATE_DEBUG(s) do { qDebug() << s; } while(0)
#else
#   define STATE_DEBUG(s)
#endif

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/*!
    \namespace Debugger
    Debugger plugin namespace
*/

/*!
    \namespace Debugger::Internal
    Internal namespace of the Debugger plugin
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    \internal
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*/

/*!
    \class Debugger::DebuggerEngine

    \brief Base class of a debugger engine.

    Note: the Debugger process itself and any helper processes like
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    gdbserver, the CODA client etc are referred to as 'Engine',
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    whereas the debugged process is referred to as 'Inferior'.

    Transitions marked by '---' are done in the individual engines.
    Transitions marked by '+-+' are done in the base DebuggerEngine.
    Transitions marked by '*' are done asynchronously.

    The GdbEngine->setupEngine() function is described in more detail below.

    The engines are responsible for local roll-back to the last
    acknowledged state before calling notify*Failed. I.e. before calling
    notifyEngineSetupFailed() any process started during setupEngine()
    so far must be terminated.
    \code

                        DebuggerNotReady
                         progressmanager/progressmanager.cpp      +
                      EngineSetupRequested
                               +
                  (calls *Engine->setupEngine())
                            |      |
                            |      |
                       {notify-  {notify-
                        Engine-   Engine-
                        SetupOk}  SetupFailed}
                            +      +
                            +      `+-+-+> EngineSetupFailed
                            +                   +
                            +    [calls RunControl->startFailed]
                            +                   +
                            +             DebuggerFinished
                            v
                      EngineSetupOk
                            +
             [calls RunControl->StartSuccessful]
                            +
                  InferiorSetupRequested
                            +
             (calls *Engine->setupInferior())
                         |       |
                         |       |
                    {notify-   {notify-
                     Inferior- Inferior-
                     SetupOk}  SetupFailed}
                         +       +
                         +       ` +-+-> InferiorSetupFailed +-+-+-+-+-+->.
                         +                                                +
                  InferiorSetupOk                                         +
                         +                                                +
                  EngineRunRequested                                      +
                         +                                                +
                 (calls *Engine->runEngine())                             +
               /       |            |        \                            +
             /         |            |          \                          +
            | (core)   | (attach)   |           |                         +
            |          |            |           |                         +
      {notify-    {notifyER&- {notifyER&-  {notify-                       +
      Inferior-     Inferior-   Inferior-  EngineRun-                     +
     Unrunnable}     StopOk}     RunOk}     Failed}                       +
           +           +            +           +                         +
   InferiorUnrunnable  +     InferiorRunOk      +                         +
                       +                        +                         +
                InferiorStopOk            EngineRunFailed                 +
                                                +                         v
                                                 `-+-+-+-+-+-+-+-+-+-+-+>-+
                                                                          +
                                                                          +
                       #Interrupt@InferiorRunOk#                          +
                                  +                                       +
                          InferiorStopRequested                           +
  #SpontaneousStop                +                                       +
   @InferiorRunOk#         (calls *Engine->                               +
          +               interruptInferior())                            +
      {notify-               |          |                                 +
     Spontaneous-       {notify-    {notify-                              +
      Inferior-          Inferior-   Inferior-                            +
       StopOk}           StopOk}    StopFailed}                           +
           +              +             +                                 +
            +            +              +                                 +
            InferiorStopOk              +                                 +
                  +                     +                                 +
                  +                    +                                  +
                  +                   +                                   +
        #Stop@InferiorUnrunnable#    +                                    +
          #Creator Close Event#     +                                     +
                       +           +                                      +
                InferiorShutdownRequested                                 +
                            +                                             +
           (calls *Engine->shutdownInferior())                            +
                         |        |                                       +
                    {notify-   {notify-                                   +
                     Inferior- Inferior-                                  +
                  ShutdownOk}  ShutdownFailed}                            +
                         +        +                                       +
                         +        +                                       +
  #Inferior exited#      +        +                                       +
         |               +        +                                       +
   {notifyInferior-      +        +                                       +
      Exited}            +        +                                       +
           +             +        +                                       +
     InferiorExitOk      +        +                                       +
             +           +        +                                       +
            InferiorShutdownOk InferiorShutdownFailed                     +
                      *          *                                        +
                  EngineShutdownRequested                                 +
                            +                                             +
           (calls *Engine->shutdownEngine())  <+-+-+-+-+-+-+-+-+-+-+-+-+-+'
                         |        |
                         |        |
                    {notify-   {notify-
                     Engine-    Engine-
                  ShutdownOk}  ShutdownFailed}
                         +       +
            EngineShutdownOk  EngineShutdownFailed
                         *       *
                     DebuggerFinished

\endcode */
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/* Here is a matching graph as a GraphViz graph. View it using
 * \code
grep "^sg1:" debuggerplugin.cpp | cut -c5- | dot -osg1.ps -Tps && gv sg1.ps
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sg1: digraph DebuggerStates {
sg1:   DebuggerNotReady -> EngineSetupRequested
sg1:   EngineSetupRequested -> EngineSetupOk [ label="notifyEngineSetupOk", style="dashed" ];
sg1:   EngineSetupRequested -> EngineSetupFailed [ label= "notifyEngineSetupFailed", style="dashed"];
sg1:   EngineSetupFailed -> DebuggerFinished [ label= "RunControl::StartFailed" ];
sg1:   EngineSetupOk -> InferiorSetupRequested [ label= "RunControl::StartSuccessful" ];
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sg1:   InferiorSetupRequested -> InferiorSetupOk [ label="notifyInferiorSetupOk", style="dashed" ];
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sg1:   InferiorSetupRequested -> InferiorSetupFailed [ label="notifyInferiorFailed", style="dashed" ];
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sg1:   InferiorSetupOk -> EngineRunRequested
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sg1:   InferiorSetupFailed -> EngineShutdownRequested
sg1:   EngineRunRequested -> InferiorUnrunnable [ label="notifyInferiorUnrunnable", style="dashed" ];
sg1:   EngineRunRequested -> InferiorStopOk [ label="notifyEngineRunAndInferiorStopOk", style="dashed" ];
sg1:   EngineRunRequested -> InferiorRunOk [ label="notifyEngineRunAndInferiorRunOk", style="dashed" ];
sg1:   EngineRunRequested -> EngineRunFailed [ label="notifyEngineRunFailed", style="dashed" ];
sg1:   EngineRunFailed -> EngineShutdownRequested
sg1:   InferiorRunOk -> InferiorStopOk [ label="SpontaneousStop\nnotifyInferiorSpontaneousStop", style="dashed" ];
sg1:   InferiorRunOk -> InferiorStopRequested [ label="User stop\nEngine::interruptInferior", style="dashed"];
sg1:   InferiorStopRequested -> InferiorStopOk [ label="notifyInferiorStopOk", style="dashed" ];
sg1:   InferiorStopRequested -> InferiorShutdownRequested  [ label="notifyInferiorStopFailed", style="dashed" ];
sg1:   InferiorStopOk -> InferiorRunRequested [ label="User\nEngine::continueInferior" ];
sg1:   InferiorRunRequested -> InferiorRunOk [ label="notifyInferiorRunOk", style="dashed"];
sg1:   InferiorRunRequested -> InferiorRunFailed [ label="notifyInferiorRunFailed", style="dashed"];
sg1:   InferiorRunFailed -> InferiorStopOk
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sg1:   InferiorStopOk -> InferiorShutdownRequested [ label="Close event" ];
sg1:   InferiorUnrunnable -> InferiorShutdownRequested [ label="Close event" ];
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sg1:   InferiorShutdownRequested -> InferiorShutdownOk [ label= "Engine::shutdownInferior\nnotifyInferiorShutdownOk", style="dashed" ];
sg1:   InferiorShutdownRequested -> InferiorShutdownFailed [ label="Engine::shutdownInferior\nnotifyInferiorShutdownFailed", style="dashed" ];
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sg1:   InferiorExited -> InferiorExitOk [ label="notifyInferiorExited", style="dashed"];
sg1:   InferiorExitOk -> InferiorShutdownOk
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sg1:   InferiorShutdownOk -> EngineShutdownRequested
sg1:   InferiorShutdownFailed -> EngineShutdownRequested
sg1:   EngineShutdownRequested -> EngineShutdownOk [ label="Engine::shutdownEngine\nnotifyEngineShutdownOk", style="dashed" ];
sg1:   EngineShutdownRequested -> EngineShutdownFailed  [ label="Engine::shutdownEngine\nnotifyEngineShutdownFailed", style="dashed" ];
sg1:   EngineShutdownOk -> DebuggerFinished  [ style = "dotted" ];
sg1:   EngineShutdownFailed  -> DebuggerFinished [ style = "dotted" ];
sg1: }
* \endcode */
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// Additional signalling:    {notifyInferiorIll}   {notifyEngineIll}
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/*!
    \class Debugger::Internal::GdbEngine
    \brief Implementation of Debugger::Engine driving a gdb executable.

    GdbEngine specific startup. All happens in EngineSetupRequested state:

    Transitions marked by '---' are done in the individual adapters.

    Transitions marked by '+-+' are done in the GdbEngine.

    \code
                  GdbEngine::setupEngine()
                          +
            (calls *Adapter->startAdapter())
                          |      |
                          |      `---> handleAdapterStartFailed()
                          |                   +
                          |             {notifyEngineSetupFailed}
                          |
                 handleAdapterStarted()
                          +
                 {notifyEngineSetupOk}
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                GdbEngine::setupInferior()
                          +
            (calls *Adapter->prepareInferior())
                          |      |
                          |      `---> handlePrepareInferiorFailed()
                          |                   +
                          |             {notifyInferiorSetupFailed}
                          |
                handleInferiorPrepared()
                          +
                {notifyInferiorSetupOk}
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\endcode */
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using namespace Core;
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using namespace Debugger::Constants;
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using namespace ProjectExplorer;
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using namespace TextEditor;
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namespace CC = Core::Constants;
namespace PE = ProjectExplorer::Constants;

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namespace Debugger {
namespace Constants {

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#ifdef Q_WS_MAC
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const char STOP_KEY[]                     = "Shift+Ctrl+Y";
const char RESET_KEY[]                    = "Ctrl+Shift+F5";
const char STEP_KEY[]                     = "Ctrl+Shift+I";
const char STEPOUT_KEY[]                  = "Ctrl+Shift+T";
const char NEXT_KEY[]                     = "Ctrl+Shift+O";
const char REVERSE_KEY[]                  = "";
const char RUN_TO_LINE_KEY[]              = "Shift+F8";
const char RUN_TO_SELECTED_FUNCTION_KEY[] = "Ctrl+F6";
const char JUMP_TO_LINE_KEY[]             = "Ctrl+D,Ctrl+L";
const char TOGGLE_BREAK_KEY[]             = "F8";
const char BREAK_BY_FUNCTION_KEY[]        = "Ctrl+D,Ctrl+F";
const char BREAK_AT_MAIN_KEY[]            = "Ctrl+D,Ctrl+M";
const char ADD_TO_WATCH_KEY[]             = "Ctrl+D,Ctrl+W";
const char SNAPSHOT_KEY[]                 = "Ctrl+D,Ctrl+S";
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#else
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const char STOP_KEY[]                     = "Shift+F5";
const char RESET_KEY[]                    = "Ctrl+Shift+F5";
const char STEP_KEY[]                     = "F11";
const char STEPOUT_KEY[]                  = "Shift+F11";
const char NEXT_KEY[]                     = "F10";
const char REVERSE_KEY[]                  = "F12";
const char RUN_TO_LINE_KEY[]              = "";
const char RUN_TO_SELECTED_FUNCTION_KEY[] = "Ctrl+F6";
const char JUMP_TO_LINE_KEY[]             = "";
const char TOGGLE_BREAK_KEY[]             = "F9";
const char BREAK_BY_FUNCTION_KEY[]        = "";
const char BREAK_AT_MAIN_KEY[]            = "";
const char ADD_TO_WATCH_KEY[]             = "Ctrl+Alt+Q";
const char SNAPSHOT_KEY[]                 = "Ctrl+D,Ctrl+S";
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#endif

} // namespace Constants


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namespace Internal {

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// To be passed through margin menu action's data
struct BreakpointMenuContextData : public ContextData
{
    enum Mode
    {
        Breakpoint,
        MessageTracePoint
    };

    BreakpointMenuContextData() : mode(Breakpoint) {}
    Mode mode;
};

} // namespace Internal
} // namespace Debugger

Q_DECLARE_METATYPE(Debugger::Internal::BreakpointMenuContextData)

namespace Debugger {
namespace Internal {

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// FIXME: Outdated?
// The createCdbEngine function takes a list of options pages it can add to.
// This allows for having a "enabled" toggle on the page independently
// of the engine. That's good for not enabling the related ActiveX control
// unnecessarily.

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void addCdbOptionPages(QList<IOptionsPage*> *opts);
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void addGdbOptionPages(QList<IOptionsPage*> *opts);
void addScriptOptionPages(QList<IOptionsPage*> *opts);
void addTcfOptionPages(QList<IOptionsPage*> *opts);
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#ifdef WITH_LLDB
void addLldbOptionPages(QList<IOptionsPage*> *opts);
#endif

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static SessionManager *sessionManager()
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{
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    return ProjectExplorerPlugin::instance()->session();
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}

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static QToolButton *toolButton(QAction *action)
{
    QToolButton *button = new QToolButton;
    button->setDefaultAction(action);
    return button;
}

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static Abi anyAbiOfBinary(const QString &fileName)
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{
    QList<Abi> abis = Abi::abisOfBinary(fileName);
    if (abis.isEmpty())
        return Abi();
    return abis.at(0);
}
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///////////////////////////////////////////////////////////////////////
//
// DummyEngine
//
///////////////////////////////////////////////////////////////////////

class DummyEngine : public DebuggerEngine
{
    Q_OBJECT

public:
    DummyEngine() : DebuggerEngine(DebuggerStartParameters()) {}
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    ~DummyEngine() {}

    void setupEngine() {}
    void setupInferior() {}
    void runEngine() {}
    void shutdownEngine() {}
    void shutdownInferior() {}
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    unsigned debuggerCapabilities() const { return AddWatcherCapability; }
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    bool acceptsBreakpoint(BreakpointModelId) const { return false; }
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    bool acceptsDebuggerCommands() const { return false; }
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};

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///////////////////////////////////////////////////////////////////////
//
// DebugMode
//
///////////////////////////////////////////////////////////////////////

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class DebugMode : public IMode
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{
public:
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    DebugMode()
    {
        setObjectName(QLatin1String("DebugMode"));
        setContext(Context(CC::C_EDITORMANAGER, C_DEBUGMODE, CC::C_NAVIGATION_PANE));
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        setDisplayName(DebuggerPlugin::tr("Debug"));
        setIcon(QIcon(QLatin1String(":/fancyactionbar/images/mode_Debug.png")));
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        setPriority(85);
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        setId(MODE_DEBUG);
        setType(CC::MODE_EDIT_TYPE);
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    }
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    ~DebugMode()
    {
        // Make sure the editor manager does not get deleted.
        //EditorManager::instance()->setParent(0);
        delete m_widget;
    }
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};
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///////////////////////////////////////////////////////////////////////
//
// Misc
//
///////////////////////////////////////////////////////////////////////

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static TextEditor::ITextEditor *currentTextEditor()
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{
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    if (const Core::EditorManager *editorManager = Core::EditorManager::instance())
            if (Core::IEditor *editor = editorManager->currentEditor())
                return qobject_cast<TextEditor::ITextEditor*>(editor);
    return 0;
}
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static bool currentTextEditorPosition(ContextData *data)
{
    if (TextEditor::ITextEditor *textEditor = currentTextEditor()) {
        if (const Core::IFile *file = textEditor->file()) {
            data->fileName = file->fileName();
            data->lineNumber = textEditor->currentLine();
            return true;
        }
    }
    return false;
}
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///////////////////////////////////////////////////////////////////////
//
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// DebuggerPluginPrivate
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//
///////////////////////////////////////////////////////////////////////
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static DebuggerPluginPrivate *theDebuggerCore = 0;
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/*!
    \class Debugger::Internal::DebuggerCore

    This is the "internal" interface of the debugger plugin that's
    used by debugger views and debugger engines. The interface is
    implemented in DebuggerPluginPrivate.
*/

/*!
    \class Debugger::Internal::DebuggerPluginPrivate

    Implementation of DebuggerCore.
*/

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class DebuggerPluginPrivate : public DebuggerCore
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{
    Q_OBJECT
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public:
    explicit DebuggerPluginPrivate(DebuggerPlugin *plugin);
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    ~DebuggerPluginPrivate();
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    bool initialize(const QStringList &arguments, QString *errorMessage);
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    void extensionsInitialized();
    void aboutToShutdown();

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    void connectEngine(DebuggerEngine *engine);
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    void disconnectEngine() { connectEngine(0); }
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    DebuggerEngine *currentEngine() const { return m_currentEngine; }
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    DebuggerEngine *dummyEngine();
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    void setThreads(const QStringList &list, int index)
    {
        const bool state = m_threadBox->blockSignals(true);
        m_threadBox->clear();
        foreach (const QString &item, list)
            m_threadBox->addItem(item);
        m_threadBox->setCurrentIndex(index);
        m_threadBox->blockSignals(state);
    }

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public slots:
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    void writeSettings()
    {
        m_debuggerSettings->writeSettings();
        m_mainWindow->writeSettings();
    }

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    void selectThread(int index)
    {
        currentEngine()->selectThread(index);
    }
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    void breakpointSetMarginActionTriggered()
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    {
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        const QAction *action = qobject_cast<const QAction *>(sender());
        QTC_ASSERT(action, return);
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        const BreakpointMenuContextData data =
            action->data().value<BreakpointMenuContextData>();
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        QString message;
        if (data.mode == BreakpointMenuContextData::MessageTracePoint) {
            if (data.address) {
                //: Message tracepoint: Address hit.
                message = tr("0x%1 hit").arg(data.address, 0, 16);
            } else {
                //: Message tracepoint: %1 file, %2 line %3 function hit.
                message = tr("%1:%2 %3() hit").arg(QFileInfo(data.fileName).fileName()).
                        arg(data.lineNumber).
                        arg(cppFunctionAt(data.fileName, data.lineNumber));
            }
            QInputDialog dialog; // Create wide input dialog.
            dialog.setWindowFlags(dialog.windowFlags()
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              & ~(Qt::WindowContextHelpButtonHint|Qt::MSWindowsFixedSizeDialogHint));
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            dialog.resize(600, dialog.height());
            dialog.setWindowTitle(tr("Add Message Tracepoint"));
            dialog.setLabelText (tr("Message:"));
            dialog.setTextValue(message);
            if (dialog.exec() != QDialog::Accepted || dialog.textValue().isEmpty())
                return;
            message = dialog.textValue();
        }
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        if (data.address)
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            toggleBreakpointByAddress(data.address, message);
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        else
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            toggleBreakpointByFileAndLine(data.fileName, data.lineNumber, message);
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    }
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    void breakpointRemoveMarginActionTriggered()
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    {
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        const QAction *act = qobject_cast<QAction *>(sender());
        QTC_ASSERT(act, return);
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        BreakpointModelId id = act->data().value<BreakpointModelId>();
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        m_breakHandler->removeBreakpoint(id);
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     }

    void breakpointEnableMarginActionTriggered()
    {
        const QAction *act = qobject_cast<QAction *>(sender());
        QTC_ASSERT(act, return);
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        BreakpointModelId id = act->data().value<BreakpointModelId>();
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        breakHandler()->setEnabled(id, true);
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    }

    void breakpointDisableMarginActionTriggered()
    {
        const QAction *act = qobject_cast<QAction *>(sender());
        QTC_ASSERT(act, return);
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        BreakpointModelId id = act->data().value<BreakpointModelId>();;
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        breakHandler()->setEnabled(id, false);
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    }

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    void updateWatchersHeader(int section, int, int newSize)
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    {
        m_watchersWindow->header()->resizeSection(section, newSize);
    }
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    void sourceFilesDockToggled(bool on)
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    {
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        if (on && m_currentEngine->state() == InferiorStopOk)
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            m_currentEngine->reloadSourceFiles();
    }

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    void modulesDockToggled(bool on)
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    {
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        if (on && m_currentEngine->state() == InferiorStopOk)
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            m_currentEngine->reloadModules();
    }
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    void registerDockToggled(bool on)
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    {
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        if (on && m_currentEngine->state() == InferiorStopOk)
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            m_currentEngine->reloadRegisters();
    }
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    void synchronizeBreakpoints()
    {
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        showMessage("ATTEMPT SYNC", LogDebug);
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        for (int i = 0, n = m_snapshotHandler->size(); i != n; ++i) {
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            if (DebuggerEngine *engine = m_snapshotHandler->at(i))
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                engine->attemptBreakpointSynchronization();
        }
    }

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    void synchronizeWatchers()
    {
        for (int i = 0, n = m_snapshotHandler->size(); i != n; ++i) {
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            if (DebuggerEngine *engine = m_snapshotHandler->at(i))
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                engine->watchHandler()->updateWatchers();
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        }
    }

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    void editorOpened(Core::IEditor *editor);
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    void updateBreakMenuItem(Core::IEditor *editor);
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    void setBusyCursor(bool busy);
    void requestMark(TextEditor::ITextEditor *editor, int lineNumber);
    void requestContextMenu(TextEditor::ITextEditor *editor,
        int lineNumber, QMenu *menu);
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    void activatePreviousMode();
    void activateDebugMode();
    void toggleBreakpoint();
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    void toggleBreakpointByFileAndLine(const QString &fileName, int lineNumber,
                                       const QString &tracePointMessage = QString());
    void toggleBreakpointByAddress(quint64 address,
                                   const QString &tracePointMessage = QString());
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    void onModeChanged(Core::IMode *mode);
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    void onCoreAboutToOpen();
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    void showSettingsDialog();
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    void debugProject();
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    void debugProjectBreakMain();
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    void startExternalApplication();
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    void startRemoteCdbSession();
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    void startRemoteApplication();
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    bool queryRemoteParameters(DebuggerStartParameters &sp, bool useScript);
    void attachRemoteApplication();
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    void attachToQmlPort();
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    void startRemoteEngine();
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    void attachExternalApplication();
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    Q_SLOT void attachExternalApplication(ProjectExplorer::RunControl *rc);
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    void runScheduled();
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    void attachCore();
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    void attachRemote(const QString &spec);
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    void enableReverseDebuggingTriggered(const QVariant &value);
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    void languagesChanged();
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    void showStatusMessage(const QString &msg, int timeout = -1);
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    void openMemoryEditor();
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    const CPlusPlus::Snapshot &cppCodeModelSnapshot() const;

    void showQtDumperLibraryWarning(const QString &details);
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    DebuggerMainWindow *mainWindow() const { return m_mainWindow; }
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    bool isDockVisible(const QString &objectName) const
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        { return mainWindow()->isDockVisible(objectName); }
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    bool hasSnapshots() const { return m_snapshotHandler->size(); }
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    void createNewDock(QWidget *widget);
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    void runControlStarted(DebuggerEngine *engine);
    void runControlFinished(DebuggerEngine *engine);
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    DebuggerLanguages activeLanguages() const;
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    unsigned enabledEngines() const { return m_cmdLineEnabledEngines; }
    QString debuggerForAbi(const Abi &abi, DebuggerEngineType et = NoEngineType) const;
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    void remoteCommand(const QStringList &options, const QStringList &);

    bool isReverseDebugging() const;
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    BreakHandler *breakHandler() const { return m_breakHandler; }
    SnapshotHandler *snapshotHandler() const { return m_snapshotHandler; }

    void setConfigValue(const QString &name, const QVariant &value);
    QVariant configValue(const QString &name) const;
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    DebuggerRunControl *createDebugger(const DebuggerStartParameters &sp,
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        RunConfiguration *rc = 0);
    void startDebugger(RunControl *runControl);
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    void displayDebugger(DebuggerEngine *engine, bool updateEngine = true);
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    void dumpLog();
    void cleanupViews();
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    void setInitialState();
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    void fontSettingsChanged(const TextEditor::FontSettings &settings);

    void updateState(DebuggerEngine *engine);
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    void updateWatchersWindow();
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    void onCurrentProjectChanged(ProjectExplorer::Project *project);
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    void sessionLoaded();
    void aboutToUnloadSession();
    void aboutToSaveSession();
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    void executeDebuggerCommand(const QString &command);
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    void scriptExpressionEntered(const QString &expression);
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    void coreShutdown();
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public slots:
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    void updateDebugActions();
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    void handleExecDetach()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->detachDebugger();
    }

    void handleExecContinue()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->continueInferior();
    }

    void handleExecInterrupt()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->requestInterruptInferior();
    }

    void handleExecReset()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->notifyEngineIll(); // FIXME: Check.
    }
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    void handleExecStep()
    {
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        if (currentEngine()->state() == DebuggerNotReady) {
            debugProjectBreakMain();
        } else {
            currentEngine()->resetLocation();
            if (boolSetting(OperateByInstruction))
                currentEngine()->executeStepI();
            else
                currentEngine()->executeStep();
        }
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    }

    void handleExecNext()
    {
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        if (currentEngine()->state() == DebuggerNotReady) {
            debugProjectBreakMain();
        } else {
            currentEngine()->resetLocation();
            if (boolSetting(OperateByInstruction))
                currentEngine()->executeNextI();
            else
                currentEngine()->executeNext();
        }
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    }

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    void handleExecStepOut()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->executeStepOut();
    }

    void handleExecReturn()
    {
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        currentEngine()->resetLocation();
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        currentEngine()->executeReturn();
    }
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    void handleExecJumpToLine()
    {
        //removeTooltip();
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        currentEngine()->resetLocation();
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        ContextData data;
        if (currentTextEditorPosition(&data))
            currentEngine()->executeJumpToLine(data);
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    }

    void handleExecRunToLine()
    {
        //removeTooltip();
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        currentEngine()->resetLocation();
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        ContextData data;
        if (currentTextEditorPosition(&data))
            currentEngine()->executeRunToLine(data);
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    }

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    void handleExecRunToSelectedFunction()
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    {
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        ITextEditor *textEditor = currentTextEditor();
        QTC_ASSERT(textEditor, return);
        QPlainTextEdit *ed = qobject_cast<QPlainTextEdit*>(textEditor->widget());
        if (!ed)
            return;
        QTextCursor cursor = ed->textCursor();
        QString functionName = cursor.selectedText();
        if (functionName.isEmpty()) {
            const QTextBlock block = cursor.block();
            const QString line = block.text();
            foreach (const QString &str, line.trimmed().split('(')) {
                QString a;
                for (int i = str.size(); --i >= 0; ) {
                    if (!str.at(i).isLetterOrNumber())
                        break;
                    a = str.at(i) + a;
                }
                if (!a.isEmpty()) {
                    functionName = a;
                    break;
                }
            }
        }

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        if (functionName.isEmpty()) {
            showStatusMessage(tr("No function selected."));
        } else {
            showStatusMessage(tr("Running to function \"%1\".")
                .arg(functionName));
            currentEngine()->resetLocation();
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            currentEngine()->executeRunToFunction(functionName);
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        }
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    }

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    void slotEditBreakpoint()
    {
        const QAction *act = qobject_cast<QAction *>(sender());
        QTC_ASSERT(act, return);
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        const BreakpointModelId id = act->data().value<BreakpointModelId>();
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        QTC_ASSERT(id > 0, return);
        BreakWindow::editBreakpoint(id, mainWindow());
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    }

    void slotRunToLine()
    {
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        const QAction *action = qobject_cast<const QAction *>(sender());
        QTC_ASSERT(action, return);
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        const BreakpointMenuContextData data = action->data().value<BreakpointMenuContextData>();
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        currentEngine()->executeRunToLine(data);
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    }

    void slotJumpToLine()
    {
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        const QAction *action = qobject_cast<const QAction *>(sender());
        QTC_ASSERT(action, return);
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        const BreakpointMenuContextData data = action->data().value<BreakpointMenuContextData>();
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        currentEngine()->executeJumpToLine(data);
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    }

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    void handleAddToWatchWindow()
    {
        // Requires a selection, but that's the only case we want anyway.
        EditorManager *editorManager = EditorManager::instance();
        if (!editorManager)
            return;
        IEditor *editor = editorManager->currentEditor();
        if (!editor)
            return;
        ITextEditor *textEditor = qobject_cast<ITextEditor*>(editor);
        if (!textEditor)
            return;
        QTextCursor tc;
        QPlainTextEdit *ptEdit = qobject_cast<QPlainTextEdit*>(editor->widget());
        if (ptEdit)
            tc = ptEdit->textCursor();
        QString exp;
        if (tc.hasSelection()) {
            exp = tc.selectedText();
        } else {
            int line, column;
            exp = cppExpressionAt(textEditor, tc.position(), &line, &column);
        }
        if (exp.isEmpty())
            return;
        currentEngine()->watchHandler()->watchExpression(exp);
    }

    void handleExecExit()
    {
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        currentEngine()->exitDebugger();
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    }

    void handleFrameDown()
    {
        currentEngine()->frameDown();
    }

    void handleFrameUp()
    {
        currentEngine()->frameUp();
    }

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    void handleOperateByInstructionTriggered(bool operateByInstructionTriggered)
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    {
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        // Go to source only if we have the file.
        if (currentEngine()->stackHandler()->currentIndex() >= 0) {
            const StackFrame frame = currentEngine()->stackHandler()->currentFrame();
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            if (operateByInstructionTriggered || frame.isUsable()) {
                currentEngine()->gotoLocation(Location(frame, true));
            }
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        }
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    }

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    bool isActiveDebugLanguage(int lang) const
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    {
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        return m_mainWindow->activeDebugLanguages() & lang;
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    }

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    QVariant sessionValue(const QString &name);
    void setSessionValue(const QString &name, const QVariant &value);
    QIcon locationMarkIcon() const { return m_locationMarkIcon; }

    void openTextEditor(const QString &titlePattern0, const QString &contents);
    void clearCppCodeModelSnapshot();
    void showMessage(const QString &msg, int channel, int timeout = -1);

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    Utils::SavedAction *action(int code) const;