debuggerplugin.cpp 111 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 (qt-info@nokia.com)
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**
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** No Commercial Usage
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**
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** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, 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
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@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 "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 "breakpoint.h"
#include "breakhandler.h"
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#include "breakwindow.h"
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#include "consolewindow.h"
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#include "disassembleragent.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/uniqueidmanager.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>
#include <projectexplorer/session.h>
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#include <projectexplorer/target.h>
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#include <qt4projectmanager/qt4projectmanagerconstants.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 <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 <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
    gdbserver, the trk client etc are referred to as 'Engine',
    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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const char * const M_DEBUG_START_DEBUGGING = "QtCreator.Menu.Debug.StartDebugging";

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const char * const STARTEXTERNAL            = "Debugger.StartExternal";
const char * const ATTACHEXTERNAL           = "Debugger.AttachExternal";
const char * const ATTACHCORE               = "Debugger.AttachCore";
const char * const ATTACHTCF                = "Debugger.AttachTcf";
const char * const ATTACHREMOTE             = "Debugger.AttachRemote";
const char * const ATTACHREMOTECDB          = "Debugger.AttachRemoteCDB";
const char * const STARTREMOTELLDB          = "Debugger.StartRemoteLLDB";
const char * const DETACH                   = "Debugger.Detach";

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const char * const RUN_TO_LINE              = "Debugger.RunToLine";
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const char * const RUN_TO_SELECTED_FUNCTION = "Debugger.RunToSelectedFunction";
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const char * const JUMP_TO_LINE             = "Debugger.JumpToLine";
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const char * const RETURN_FROM_FUNCTION     = "Debugger.ReturnFromFunction";
const char * const SNAPSHOT                 = "Debugger.Snapshot";
const char * const TOGGLE_BREAK             = "Debugger.ToggleBreak";
const char * const BREAK_BY_FUNCTION        = "Debugger.BreakByFunction";
const char * const BREAK_AT_MAIN            = "Debugger.BreakAtMain";
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// Don't add '1' to the string as it shows up in the shortcut dialog.
const char * const ADD_TO_WATCH1            = "Debugger.AddToWatch";
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const char * const ADD_TO_WATCH2            = "Debugger.AddToWatch2";
const char * const FRAME_UP                 = "Debugger.FrameUp";
const char * const FRAME_DOWN               = "Debugger.FrameDown";
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#ifdef Q_WS_MAC
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const char * const STOP_KEY                     = "Shift+Ctrl+Y";
const char * const RESET_KEY                    = "Ctrl+Shift+F5";
const char * const STEP_KEY                     = "Ctrl+Shift+I";
const char * const STEPOUT_KEY                  = "Ctrl+Shift+T";
const char * const NEXT_KEY                     = "Ctrl+Shift+O";
const char * const REVERSE_KEY                  = "";
const char * const RUN_TO_LINE_KEY              = "Shift+F8";
const char * const RUN_TO_SELECTED_FUNCTION_KEY = "Ctrl+F6";
const char * const JUMP_TO_LINE_KEY             = "Ctrl+D,Ctrl+L";
const char * const TOGGLE_BREAK_KEY             = "F8";
const char * const BREAK_BY_FUNCTION_KEY        = "Ctrl+D,Ctrl+F";
const char * const BREAK_AT_MAIN_KEY            = "Ctrl+D,Ctrl+M";
const char * const ADD_TO_WATCH_KEY             = "Ctrl+D,Ctrl+W";
const char * const SNAPSHOT_KEY                 = "Ctrl+D,Ctrl+S";
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#else
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const char * const STOP_KEY                     = "Shift+F5";
const char * const RESET_KEY                    = "Ctrl+Shift+F5";
const char * const STEP_KEY                     = "F11";
const char * const STEPOUT_KEY                  = "Shift+F11";
const char * const NEXT_KEY                     = "F10";
const char * const REVERSE_KEY                  = "F12";
const char * const RUN_TO_LINE_KEY              = "";
const char * const RUN_TO_SELECTED_FUNCTION_KEY = "Ctrl+F6";
const char * const JUMP_TO_LINE_KEY             = "";
const char * const TOGGLE_BREAK_KEY             = "F9";
const char * const BREAK_BY_FUNCTION_KEY        = "";
const char * const BREAK_AT_MAIN_KEY            = "";
const char * const ADD_TO_WATCH_KEY             = "Ctrl+Alt+Q";
const char * const SNAPSHOT_KEY                 = "Ctrl+D,Ctrl+S";
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#endif

} // namespace Constants


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namespace Internal {

// 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 abiOfBinary(const QString &fileName)
{
    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() {}
    unsigned debuggerCapabilities() const { return 0; }
    bool acceptsBreakpoint(BreakpointId) const { return false; }
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    bool acceptsDebuggerCommands() const { return false; }
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};

static DebuggerEngine *dummyEngine()
{
    static DummyEngine dummy;
    return &dummy;
}


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

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class DebugMode : public IMode
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{
public:
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    DebugMode() : m_widget(0) { setObjectName(QLatin1String("DebugMode")); }
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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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    // IMode
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    QString displayName() const { return DebuggerPlugin::tr("Debug"); }
    QIcon icon() const { return QIcon(__(":/fancyactionbar/images/mode_Debug.png")); }
    int priority() const { return P_MODE_DEBUG; }
    QWidget *widget();
    QString id() const { return MODE_DEBUG; }
    QString type() const { return CC::MODE_EDIT_TYPE; }
    Context context() const
        { return Context(CC::C_EDITORMANAGER, C_DEBUGMODE, CC::C_NAVIGATION_PANE); }
    QString contextHelpId() const { return QString(); }
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private:
    QWidget *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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public slots:
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    void writeSettings()
    {
        m_debuggerSettings->writeSettings();
        m_mainWindow->writeSettings();
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        m_commonOptionsPage->writeSettings();
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    }

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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);
        const ContextData data = action->data().value<ContextData>();
        if (data.address)
            toggleBreakpointByAddress(data.address);
        else
            toggleBreakpointByFileAndLine(data.fileName, data.lineNumber);
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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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        m_breakHandler->removeBreakpoint(act->data().toInt());
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     }

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

    void breakpointDisableMarginActionTriggered()
    {
        const QAction *act = qobject_cast<QAction *>(sender());
        QTC_ASSERT(act, return);
        breakHandler()->setEnabled(act->data().toInt(), 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);
    void toggleBreakpointByAddress(quint64 address);
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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 startExternalApplication();
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    void startRemoteCdbSession();
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    void startRemoteApplication();
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    void startRemoteEngine();
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    void attachExternalApplication();
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    void attachExternalApplication(qint64 pid, const QString &binary);
    void runScheduled();
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    void attachCore();
    void attachCore(const QString &core, const QString &exeFileName);
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    void attachRemote(const QString &spec);
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    void attachRemoteTcf();
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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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    QString debuggerForAbi(const Abi &abi) 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 clearStatusMessage();

    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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        currentEngine()->resetLocation();
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        if (boolSetting(OperateByInstruction))
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            currentEngine()->executeStepI();
        else
            currentEngine()->executeStep();
    }

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

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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 BreakpointId id = act->data().toInt();
        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);
        const ContextData data = action->data().value<ContextData>();
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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);
        const ContextData data = action->data().value<ContextData>();
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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;
    bool boolSetting(int code) const;
    QString stringSetting(int code) const;

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    void showModuleSymbols(const QString &moduleName, const Symbols &symbols);

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    bool parseArgument(QStringList::const_iterator &it,
        const QStringList::const_iterator &cend,
        unsigned *enabledEngines, QString *errorMessage);
    bool parseArguments(const QStringList &args,
        unsigned *enabledEngines, QString *errorMessage);

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    DebuggerToolTipManager *toolTipManager() const { return m_toolTipManager; }

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public:
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    DebuggerMainWindow *m_mainWindow;
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    DebuggerRunControlFactory *m_debuggerRunControlFactory;

    QString m_previousMode;
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    QList<DebuggerStartParameters> m_scheduledStarts;
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    Utils::ProxyAction *m_visibleDebugAction;
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    QAction *m_debugAction;
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    QAction *m_startExternalAction;
    QAction *m_startRemoteAction;
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    QAction *m_startRemoteCdbAction;
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    QAction *m_startRemoteLldbAction;
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    QAction *m_attachExternalAction;
    QAction *m_attachCoreAction;
    QAction *m_attachTcfAction;
    QAction *m_detachAction;
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    QAction *m_continueAction;
    QAction *m_exitAction; // On application output button if "Stop" is possible
    QAction *m_interruptAction; // On the fat debug button if "Pause" is possible
    QAction *m_undisturbableAction; // On the fat debug button if nothing can be done
    QAction *m_resetAction;
    QAction *m_stepAction;
    QAction *m_stepOutAction;
    QAction *m_runToLineAction; // In the debug menu
    QAction *m_runToSelectedFunctionAction;
    QAction *m_jumpToLineAction; // In the Debug menu.
    QAction *m_returnFromFunctionAction;
    QAction *m_nextAction;
    QAction *m_watchAction1; // In the Debug menu.
    QAction *m_watchAction2; // In the text editor context menu.
    QAction *m_breakAction;
    QAction *m_reverseDirectionAction;
    QAction *m_frameUpAction;
    QAction *m_frameDownAction;

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    QToolButton *m_reverseToolButton;

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    QIcon m_startIcon;
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    QIcon m_exitIcon;
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    QIcon m_continueIcon;
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    QIcon m_interruptIcon;
    QIcon m_locationMarkIcon;

    QLabel *m_statusLabel;
    QComboBox *m_threadBox;

    BreakWindow *m_breakWindow;
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    BreakHandler *m_breakHandler;
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    //ConsoleWindow *m_consoleWindow;
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    QTreeView *m_returnWindow;
    QTreeView *m_localsWindow;
    QTreeView *m_watchersWindow;
    QAbstractItemView *m_registerWindow;
    QAbstractItemView *m_modulesWindow;
    QAbstractItemView *m_snapshotWindow;
    SourceFilesWindow *m_sourceFilesWindow;
    QAbstractItemView *m_stackWindow;
    QAbstractItemView *m_threadsWindow;
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    LogWindow *m_logWindow;
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    ScriptConsole *m_scriptConsoleWindow;
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    bool m_busy;
    QTimer m_statusTimer;
    QString m_lastPermanentStatusMessage;

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