#ifndef Date_OS_SEEN
#define Date_OS_SEEN
///////    File Date_OS.h    ///////
#include "Date.h"
#include "OrderedSeq.h"

class Date_OS : public OrderedSeq
{ public:
    Date_OS() : len(0) { }                   // default constructor
    Uint length() { return(len); }           // current length of seq
    Date* operator[](Uint i);                // overloading []
    void remove(Uint i);                     // remove by index
  protected:
    int  append(void* date);        // add any at end, -1 failed
  private:
    void swap(Uint i, Uint j);      // interchange elements
    int  cmp(Uint i, Uint j);       // compare elements
    int  cmp(void* date, Uint j);   // compare key to element
    enum {Max=256};
    Date* dates[Max];               // pointer array
    Uint    len;                    // total no. of dates
};

inline void Date_OS::swap(Uint i, Uint j)
       {  Date* tmp = dates[i];
          dates[i]  = dates[j];
          dates[j]  = tmp;
       }

inline int Date_OS::cmp(Uint i, Uint j)
       {  return dates[i]->cmp(*dates[j]); }

inline int Date_OS::cmp(void* date, Uint j)
       {  Date* tmp = (Date*) date;
          return tmp->cmp(*dates[j]);
       }
#endif