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/**************************************************************************
wn_set s;
wn_mkset(&s);
wn_freeset(s);
wn_setins(s,e)
wn_setdel(s,e)
wn_set_to_sll(pl,s)
wn_sll_to_set(ps,l)
wn_setcpy(pout,in)
wn_setcat(out,in)
bool wn_setempty(s)
int wn_setcount(s)
bool wn_setloop(s,&dummy) * iterator *
**************************************************************************/
/****************************************************************************
COPYRIGHT NOTICE:
The source code in this file is provided free of charge
to the author's consulting clients. It is in the
public domain and therefore may be used by anybody for
any purpose.
AUTHOR:
Will Naylor
****************************************************************************/
#include "wnlib.h"
wn_mkset(ps)
wn_set *ps;
{
*ps = wn_new(wn_set);
(*ps)->list = NULL;
(*ps)->el = NULL;
(*ps)->group = wn_curgp();
}
wn_freeset(s)
wn_set s;
{
wn_gppush(s->group);
wn_freesll_list(s->list);
wn_free((ptr)s);
wn_gppop();
}
wn_setins_routine(s,e)
wn_set s;
ptr e;
{
wn_gppush(s->group);
wn_sllins(&(s->list),e);
wn_gppop();
}
bool wn_setdel_routine(s,e)
wn_set s;
ptr e;
{
bool success;
wn_gppush(s->group);
success = wn_slldel(&(s->list),e);
wn_gppop();
return(success);
}
wn_set_to_sll(pl,s)
wn_sll *pl;
wn_set s;
{
*pl = s->list;
}
wn_sll_to_set(ps,l)
wn_set *ps;
wn_sll l;
{
wn_mkset(ps);
(*ps)->list = l;
}
wn_setcpy(pout,in)
wn_set *pout,in;
{
wn_mkset(pout);
wn_sllcpy(&((*pout)->list),in->list);
}
wn_setcat(out,in)
wn_set out,in;
{
wn_sllcat(&(in->list),out->list); /* cat in this order because out->list
usually much longer */
out->list = in->list;
}
bool wn_setempty(s)
wn_set s;
{
return(wn_sllempty(s->list));
}
int wn_setcount(s)
wn_set s;
{
return(wn_sllcount(s->list));
}
bool wn_setloop_routine(s,pdummy)
register wn_set s;
ptr *pdummy;
{
extern bool wn_loopinit_just_called;
if(wn_loopinit_just_called)
{
wn_loopinit_just_called = FALSE;
s->el = s->list;
}
else
{
s->el = s->el->next;
}
if(s->el == NULL)
{
*pdummy = NULL;
return(FALSE);
}
else
{
*pdummy = s->el->contents;
return(TRUE);
}
}
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