/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
**
** 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
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#ifndef DEBUGGER_CDBENGINEPRIVATE_H
#define DEBUGGER_CDBENGINEPRIVATE_H

#include "cdbdebugeventcallback.h"
#include "cdbdebugoutput.h"
#include "cdboptions.h"
#include "cdbdumperhelper.h"
#include "stackhandler.h"
#include "debuggermanager.h"

#include <utils/consoleprocess.h>
#include <QtCore/QSharedPointer>

namespace Debugger {
namespace Internal {

class DebuggerManager;
class IDebuggerManagerAccessForEngines;
class WatchHandler;
class CdbSymbolGroupContext;
class CdbStackTraceContext;

// Thin wrapper around the 'DBEng' debugger engine shared library
// which is loaded at runtime.

class DebuggerEngineLibrary
{
public:
    DebuggerEngineLibrary();
    bool init(const QString &path, QString *errorMessage);

    inline HRESULT debugCreate(REFIID interfaceId, PVOID *interfaceHandle) const
        { return m_debugCreate(interfaceId, interfaceHandle); }

private:
    // The exported functions of the library
    typedef HRESULT (*DebugCreateFunction)(REFIID, PVOID *);

    DebugCreateFunction m_debugCreate;
};

// A class that sets an expression syntax on the debug control while in scope.
// Can be nested as it checks for the old value.
class SyntaxSetter {
    Q_DISABLE_COPY(SyntaxSetter)
public:
    explicit inline SyntaxSetter(IDebugControl4 *ctl, ULONG desiredSyntax);
    inline  ~SyntaxSetter();
private:
    const ULONG m_desiredSyntax;
    IDebugControl4 *m_ctl;
    ULONG m_oldSyntax;
};

// helper struct to pass interfaces around
struct CdbComInterfaces
{
    CdbComInterfaces();
    IDebugClient5*          debugClient;
    IDebugControl4*         debugControl;
    IDebugSystemObjects4*   debugSystemObjects;
    IDebugSymbols3*         debugSymbols;
    IDebugRegisters2*       debugRegisters;
    IDebugDataSpaces4*      debugDataSpaces;
};

struct CdbDebugEnginePrivate
{    
    enum HandleBreakEventMode { // Special modes for break event handler.
        BreakEventHandle,
        BreakEventIgnoreOnce,
        BreakEventSyncBreakPoints,
    };

    explicit CdbDebugEnginePrivate(DebuggerManager *parent,
                                   const QSharedPointer<CdbOptions> &options,
                                   CdbDebugEngine* engine);
    bool init(QString *errorMessage);
    ~CdbDebugEnginePrivate();

    void setDebuggeeHandles(HANDLE hDebuggeeProcess,  HANDLE hDebuggeeThread);

    bool isDebuggeeRunning() const { return m_watchTimer != -1; }
    void handleDebugEvent();
    void updateThreadList();    
    void updateStackTrace();
    bool updateLocals(int frameIndex, WatchHandler *wh, QString *errorMessage);
    void updateModules();

    void handleBreakpointEvent(PDEBUG_BREAKPOINT2 pBP);
    void cleanStackTrace();
    void clearForRun();
    void handleModuleLoad(const QString &);
    CdbSymbolGroupContext *getStackFrameSymbolGroupContext(int frameIndex, QString *errorMessage) const;
    void clearDisplay();

    bool interruptInterferiorProcess(QString *errorMessage);

    bool continueInferiorProcess(QString *errorMessage);
    bool continueInferior(QString *errorMessage);

    bool attemptBreakpointSynchronization(QString *errorMessage);

    static bool executeDebuggerCommand(IDebugControl4 *ctrl, const QString &command, QString *errorMessage);

    const QSharedPointer<CdbOptions>  m_options;
    HANDLE                  m_hDebuggeeProcess;
    HANDLE                  m_hDebuggeeThread;
    int                     m_currentThreadId;
    HandleBreakEventMode    m_breakEventMode;

    int                     m_watchTimer;
    CdbComInterfaces        m_cif;
    CdbDebugEventCallback   m_debugEventCallBack;
    CdbDebugOutput          m_debugOutputCallBack;    
    CdbDumperHelper         m_dumper;

    CdbDebugEngine* m_engine;
    DebuggerManager *m_debuggerManager;
    IDebuggerManagerAccessForEngines *m_debuggerManagerAccess;
    CdbStackTraceContext *m_currentStackTrace;
    bool m_firstActivatedFrame;

    DebuggerStartMode m_mode;
    Core::Utils::ConsoleProcess m_consoleStubProc;
};

// Message
QString msgDebugEngineComResult(HRESULT hr);
QString msgComFailed(const char *func, HRESULT hr);

enum { debugCDB = 0 };

} // namespace Internal
} // namespace Debugger

#endif // DEBUGGER_CDBENGINEPRIVATE_H