object.h

浙江大学的悟空嵌入式系统模拟器

    // No dynamic class system: so stub out the macros

#define DECLARE_DYNAMIC_CLASS(name)
#define DECLARE_ABSTRACT_CLASS(name)
#define DECLARE_CLASS(name)
#define IMPLEMENT_DYNAMIC_CLASS(name, basename)
#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)
#define IMPLEMENT_ABSTRACT_CLASS(name, basename)
#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)
#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2

#define DECLARE_PLUGGABLE_CLASS(name)
#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)
#define IMPLEMENT_PLUGGABLE_CLASS(name, basename)
#define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)

#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo)
#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)
#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename)
#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)
#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename)
#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)

#endif // wxUSE_DYNAMIC_CLASSES


#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className)

// Just seems a bit nicer-looking (pretend it's not a macro)
#define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className)

// to be replaced by dynamic_cast<> in the future
#define wxDynamicCast(obj, className) \
 ((className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className))

// The 'this' pointer is always true, so use this version
// to cast the this pointer and avoid compiler warnings.
#define wxDynamicCastThis(className) \
 (IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0)

#define wxConstCast(obj, className) ((className *)(obj))


#ifdef __WXDEBUG__
inline void wxCheckCast(void *ptr)
{
    wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
}
#define wxStaticCast(obj, className) \
 (wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj)))

#else  // !__WXDEBUG__
#define wxStaticCast(obj, className) ((className *)(obj))

#endif  // __WXDEBUG__


// for some reason Borland seems to need this include.
#if wxUSE_STD_IOSTREAM                                \
    && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)  \
    && defined(__BORLANDC__)
    #if wxUSE_IOSTREAMH
        #include <iostream.h>
    #else
        #include <iostream>
    #endif
#endif // wxUSE_IOSTREAMH

// ----------------------------------------------------------------------------
// set up memory debugging macros
// ----------------------------------------------------------------------------

/*
    Which new/delete operator variants do we want?

    _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
    _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
    _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
    _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
    _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
    _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
    _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
*/

#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING

// All compilers get this one
#define _WX_WANT_NEW_SIZET_WXCHAR_INT

// Everyone except Visage gets the next one
#ifndef __VISAGECPP__
    #define _WX_WANT_DELETE_VOID
#endif

// Only visage gets this one under the correct circumstances
#if defined(__VISAGECPP__) && __DEBUG_ALLOC__
    #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
#endif

// Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new
#if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
    #define _WX_WANT_DELETE_VOID_WXCHAR_INT
#endif

// Now see who (if anyone) gets the array memory operators
#if wxUSE_ARRAY_MEMORY_OPERATORS

    // Everyone except Visual C++ (cause problems for VC++ - crashes)
    #if !defined(__VISUALC__)
        #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
    #endif

    // Everyone except Visual C++ (cause problems for VC++ - crashes)
    #if !defined(__VISUALC__)
        #define _WX_WANT_ARRAY_DELETE_VOID
    #endif

    // Only CodeWarrior 6 or higher
    #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
        #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
    #endif

#endif // wxUSE_ARRAY_MEMORY_OPERATORS

#endif // WXDEBUG && wxUSE_MEMORY_TRACING


// ----------------------------------------------------------------------------
// wxObject: the root class of wxWindows object hierarchy
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxObject
{
    DECLARE_ABSTRACT_CLASS(wxObject)

private:
    void InitFrom(const wxObject& other);
    
public:
    wxObject() { m_refData = NULL; }
    virtual ~wxObject() { UnRef(); }
    
    wxObject(const wxObject& other)
        {
            InitFrom(other);
        }
    
    wxObject& operator=(const wxObject& other)
    {
        if ( this != &other )
        {
            UnRef();
            InitFrom(other);
        }
        return *this;
    }

    bool IsKindOf(wxClassInfo *info) const;


    // Turn on the correct set of new and delete operators

#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
    void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#endif

#ifdef _WX_WANT_DELETE_VOID
    void operator delete ( void * buf );
#endif

#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
    void operator delete ( void *buf, const char *_fname, size_t _line );
#endif

#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
    void operator delete ( void *buf, const wxChar*, int );
#endif

#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
    void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#endif

#ifdef _WX_WANT_ARRAY_DELETE_VOID
    void operator delete[] ( void *buf );
#endif

#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
    void operator delete[] (void* buf, const wxChar*, int );
#endif


#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
    virtual void Dump(wxSTD ostream& str);
#endif

    // ref counted data handling methods

    // get/set
    wxObjectRefData *GetRefData() const { return m_refData; }
    void SetRefData(wxObjectRefData *data) { m_refData = data; }

    // make a 'clone' of the object
    void Ref(const wxObject& clone);

    // destroy a reference
    void UnRef();

protected:
    // ensure that our data is not shared with anybody else: if we have no
    // data, it is created using CreateRefData() below, if we have shared data
    // it is copied using CloneRefData(), otherwise nothing is done
    void AllocExclusive();

    // both methods must be implemented if Unshare() is used, not pure virtual
    // only because of the backwards compatibility reasons

    // create a new m_refData
    virtual wxObjectRefData *CreateRefData() const;

    // create a new m_refData initialized with the given one
    virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;

    wxObjectRefData *m_refData;
};

// ----------------------------------------------------------------------------
// wxObjectRefData: ref counted data meant to be stored in wxObject
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxObjectRefData
{
    friend class WXDLLEXPORT wxObject;

public:
    wxObjectRefData() : m_count(1) { }
    virtual ~wxObjectRefData() { }

    int GetRefCount() const { return m_count; }

private:
    int m_count;
};


inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
{
    return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
}

// ----------------------------------------------------------------------------
// more debugging macros
// ----------------------------------------------------------------------------

#ifdef __WXDEBUG__
    #ifndef WXDEBUG_NEW
        #define WXDEBUG_NEW new(__TFILE__,__LINE__)
    #endif
#else // !__WXDEBUG__
    #define WXDEBUG_NEW new
#endif

// Redefine new to be the debugging version. This doesn't work with all
// compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
// to use the debugging version.

#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
    #define new new(__TFILE__,__LINE__)
#endif

#endif  // _WX_OBJECTH__