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# include <stdlib.h>
# include "erc.h"
static size_t int_toSize (int x)
{
size_t res = (size_t) x;
if ((int) res != x)
{
fprintf (stderr, "Error: int_toSize failure: %d", x);
return 0;
}
else
{
return res;
}
}
erc erc_create (void)
{
erc c;
c = (erc) malloc (sizeof (ercInfo));
if (c == 0)
{
printf ("Malloc returned null in erc_create\n");
exit (EXIT_FAILURE);
}
c->vals = 0;
c->size = 0;
return c;
}
void erc_clear (erc c) /*@ensures isnull c->vals, c->next@*/
{
ercList elem;
ercList next;
for (elem = c->vals; elem != 0; elem = next)
{
next = elem->next; elem->next = NULL;
free (elem);
}
c->vals = 0;
c->size = 0;
}
void erc_final (erc c)
{
erc_clear (c);
free (c);
}
bool erc_member (eref er, erc c)
{
ercList tmpc;
for (tmpc = c->vals; tmpc != 0; tmpc = tmpc->next)
if (eref_equal (tmpc->val, er)) return TRUE;
return FALSE;
}
void erc_insert (erc c, eref er)
{
ercList newElem;
newElem = (ercElem *) malloc (sizeof (ercElem));
if (newElem == 0)
{
printf ("Malloc returned null in erc_insert\n");
exit (EXIT_FAILURE);
}
newElem->val = er;
newElem->next = c->vals;
c->vals = newElem;
c->size++;
}
bool erc_delete (erc c, eref er)
{
ercList elem;
ercList prev;
for (prev = 0, elem = c->vals;
elem != 0;
prev = elem, elem = elem->next)
{
if (eref_equal (elem->val, er))
{
if (prev == 0)
{ c->vals = elem->next; elem->next = NULL; }
else
{ prev->next = elem->next; elem->next = NULL; }
free (elem);
c->size--;
return TRUE;
}
}
return FALSE;
}
void erc_join (erc c1, erc c2)
{
ercList tmpc;
for (tmpc = c2->vals; tmpc != 0; tmpc = tmpc->next)
erc_insert (c1, tmpc->val);
}
char *erc_sprint (erc c)
{
int len;
char *result;
result = (char *)
malloc (int_toSize (erc_size (c) * (employeePrintSize + 1) + 1));
if (result == 0)
{
printf ("Malloc returned null in erc_sprint\n");
exit (EXIT_FAILURE);
}
len = 0;
erc_elements(c, er)
{
employee_sprint(&(result[len]), eref_get(er));
len += employeePrintSize;
result[len++] = '\n';
} end_erc_elements;
result[len] = '\0';
return result;
}
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