//allkeys.cpp
//chris busch

#include "allkeys.hpp"
#include <stdio.h> //for puts

#ifdef DMALLOC
# include "dmalloc.h"
#endif

akeynode* allkeys::addkey()
{
	akeynode* newone;

	if( (newone = new akeynode ) == NULL)
	{
		#ifdef CHECKMEM
		puts("out of mem in allkeys::addkey()");
		#endif
		return NULL;
	}
	if (top != NULL)
		top->next = newone;
	current = top = newone;
	top->next = NULL;

	if (numkeys == 0)
		first = top;

	numkeys++;

	return current;
}

akeynode* allkeys::reset()
{
	return (current = first);
}

akeynode* allkeys::advance()
{
	if(current!=NULL)
	{
		current = current->next;
	}
	else
	{
		#ifdef DEBUG
			puts("advanced beyond allkeys list");
		#endif
	}
	return current;
}

allkeys::~allkeys()
{
	akeynode *t;
	reset();

	while( current != NULL )
	{
		t = current;
		advance();
		delete t;
	}
}