// Chap 11, pp 543 - 544
// Rename this file as PQ.cpp.

// *********************************************************
// Implementation file PQ.cpp for the ADT Priority Queue.
// A heap represents the priority queue.
// *********************************************************
#include "PQ.h"    // header file for priority queue

pqClass::pqClass()
{
}  // end constructor

// NOTE. THE NEXT 3 LINES ARE MISSING FROM THE TEXT:
pqClass::pqClass(const pqClass& PQ) : H(PQ.H)
{
}  // end copy constructor

pqClass::~pqClass()
{
}  // end destructor

boolean pqClass::PQueueIsEmpty()
{
   return H.HeapIsEmpty();
}  // end PQueueIsEmpty

void pqClass::PQueueAdd(pqItemType NewItem, 
                        boolean& Success)
{
   H.HeapAdd(NewItem, Success);
}  // end PQueueAdd

void pqClass::PQueueRemove(pqItemType& PriorityItem, 
                           boolean& Success)
{
   H.HeapRemove(PriorityItem, Success);
}  // end PQueueRemove
// End of implementation file.