sllist.hxx

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#ifndef __SLLHHDEFS
#define __SLLHHDEFS

class DllExp SLLItem {
        friend class SLList ;
        SLLItem *next;
public:
        SLLItem(){
                next = 0;
        };
};

class DllExp SLList {
        SLLItem *head;
        SLLItem *curr;
public:
        SLList (){
                DISABLE_AST
                head = new SLLItem();
                curr = head;
                ENABLE_AST
        }
        ~SLList()
        {
                DISABLE_AST
                delete head;
                ENABLE_AST
        }
    void add(SLLItem *itemptr)
        {
                DISABLE_AST
                SLLItem *ptr = head;
                while(ptr->next)
                {
                        ptr = ptr->next;
                }
                ptr->next = itemptr;
                ENABLE_AST
        }
        SLLItem *getHead()
        {
                curr = head->next;
                return( head->next );
        }
        SLLItem *getNext()
        {
                DISABLE_AST
                if(!curr)
                        curr = head;
                curr = curr->next;
                ENABLE_AST
                return( curr );
        }
        SLLItem *removeHead()
        {
                SLLItem *ptr;

                DISABLE_AST
                ptr = head->next;
                if(ptr)
                {
                        head->next = ptr->next;
                        curr = head->next;
                }
                ENABLE_AST
                return( ptr);
        }
        void remove(SLLItem *itemptr)
        {
                SLLItem *ptr = head, *prev;
                DISABLE_AST
                while(ptr->next)
                {
                        prev = ptr;
                        ptr = ptr->next;
                        if( itemptr == ptr )
                        {
                                prev->next = ptr->next;
                        }
                }
                ENABLE_AST
        }
};
#endif