Template Error

[Wild Thing]

Hi,

I was trying to use this tracer I found on Codeexpert. On compiling, I get the following error:

 
template <class T>
class SS_List
{
public:

    // construction, destruction
    SS_List();
    virtual ~SS_List();

    // copy and assignment
    SS_List(SS_List& rhs) { InitObject(); *this = rhs; }
    SS_List& operator = (SS_List& rhs)
    {
        RemoveAll();
        InitObject(); 
        Iterator it = rhs.Beginning();
        while( it.IsValid() )
        {
            InsertEnd(it.Current());
            ++it;
        }        
        return *this;
    }

    // Helper sub-class
    class Object
    {
    public:
        Object() { m_pNext = NULL; m_pPrev = NULL; }
        ~Object() {}

        T        m_Value;

        Object*  m_pNext;
        Object*  m_pPrev;
    };
    
    class Iterator
    {
    public:

        Iterator() { InitObject(&Object()); }
        Iterator(Object* pObject) { InitObject(pObject); }
        
        VOID InitObject(Object* pObject) { m_pCurrent = pObject; }        
        VOID operator = (Object* pObject) { InitObject(pObject); }

        T& operator ++ () 
        { 
            if( m_pCurrent->m_pNext )
                InitObject(m_pCurrent->m_pNext);
            else
                InitObject(NULL);

            return Current();
        }

        T& operator -- ()
        { 
            if( m_pCurrent->m_pPrev )
                InitObject(m_pCurrent->m_pPrev);
            else
                InitObject(NULL);
            
            return Current();
        }

        BOOL operator != (Object* rhs) { return m_pCurrent != rhs ? TRUE : FALSE; }
        BOOL operator == (Object* rhs) { return m_pCurrent == rhs ? TRUE : FALSE; }
        
        T& operator -> () { return Current(); }
		operator T () { return Current(); }
        
        T& Current() { return m_pCurrent->m_Value; }
        T& Next() { ++(*this); return Current(); }
        T& Prev() { --(*this); return Current(); }

        BOOL IsLast() { return (m_pCurrent->m_pNext == NULL) ? TRUE : FALSE; }
        BOOL IsFirst() { return (m_pCurrent->m_pPrev == NULL) ? TRUE : FALSE; }
        BOOL IsValid() { return (m_pCurrent != NULL) ? TRUE : FALSE; }
        
    private:

        Object* m_pCurrent;

    };
    
protected:

    // initialization
    virtual VOID	            InitObject		        ();

public:

	// accessor functions
    Object*                     Beginning               ();
    Object*                     End                     ();
    
    // utilities
    VOID                        InsertBeginning         (T object);
    VOID                        InsertEnd               (T object);
    VOID                        Insert                  (T object, INT nIndex);
    VOID                        Remove                  (INT nIndex);
    VOID                        RemoveAll               ();
    BOOL                        RemoveCurrent           (Iterator& it);
    
    INT                         Count                   ();
    INT                         IncrementCount          ();
    INT                         DecrementCount          ();

    T&                          GetAt                   (INT nIndex);
    T&                          operator []             (INT nIndex);
    
protected:

    VOID                        Beginning               (Object* pObject);
    VOID                        End                     (Object* pObject);
    VOID                        Count                   (INT nCount);
    Object*                     GetObjectAt             (INT nIndex);
    
private:

    Object*                     m_pBegin;
    Object*                     m_pEnd;
    INT                         m_nCount;

};

// ----------------------------------------------------------------------- //
//  SS_List Accessor Functions
// ----------------------------------------------------------------------- //

template <class T>
inline SS_List<T>::Object* SS_List<T>::Beginning()   // this is line #171
{ return m_pBegin; }

I get the following error:

d:\c++\log fast\ss_log_src\ss_list.h(171) : error C2143: Syntaxfehler: Es fehlt ';' vor '*'

This seems to be a VS7 / VS9 porting problem; but I'm not familiar with Templates, so could anybody please tell me what's wrong here?

Thanx a lot in adv.

[darwen]

Much as I love fixing errors in code which was posted on other sites (and did you contact the authors of the code) I'm feeling generous...

This should fix your issue.

template <class T>
inline typename SS_List<T>::Object* SS_List<T>::Beginning()
{ return m_pBegin; }

Notice the 'typename' addition.

And why ? Because the compiler needs to know if SS_List<T>::Object is a static member variable or a type.

Darwen.

[STLDude]

I just can't resist:

Wild Thing Location: Germany

template <class T>
class SS_List;

No offense intended.

[Skizmo]

hahahaha

[Wild Thing]

Much as I love fixing errors in code which was posted on other sites (and did you contact the authors of the code) I'm feeling generous...

Thanks a lot, Darwen; I am still learning...

(Sorry for the "other side", but at least I didn' pretend it to be my own..)

@STLDude:
now that you mention it....