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#ifndef Link_dot_h
#define Link_dot_h
/* This is the dummy base class for all items *
* to be placed in a linked list. It would have *
* been cleaner to use Templates but support for *
* templates varies with different compilers and *
* the problem of code blow up etc exists. *
*/
class Linkable
{
public:
Linkable(){};
virtual ~Linkable(){};
};
/* The Cells contains a Linkable element and ptrs *
* to the next and previos cells *
*/
class Cell {
Linkable *item_;
Cell *next_;
Cell *prev_;
public:
Cell();
Cell(Linkable*);
Cell(Linkable*,Cell*);
Cell(Linkable*,Cell*,Cell*);
~Cell();
Linkable* item();
Cell* next();
Cell* prev();
void set_next(Cell*);
void set_prev(Cell*);
};
/* The List class provides support for creating a *
* list and provides operations like inserting, *
* deleting elements to the beginning and the end *
* of the list *
*/
class List {
public:
Cell *head_;
Cell *tail_;
Cell *old_search_val_; /* result of the previous search */
List();
~List();
void insert(Linkable*);
void add_last(Linkable*);
void add_first(Linkable*);
void remove(Linkable*);
};
#endif
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