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#include "dat.h"
#include <stdlib.h>
#include "../defines.h"
Dat*
dat_new() {
Dat *p_dat = (Dat *) malloc(sizeof(Dat));
p_dat->p_first = 0;
p_dat->p_last = 0;
p_dat->i_size = 0;
return (p_dat);
}
DatElem*
datelem_new() {
return (datelem_new_t(TYPE_UNKNOWN));
}
DatElem*
datelem_new_t(TYPE type) {
DatElem *p_elem = (DatElem *) malloc(sizeof(DatElem));
p_elem->p_next = 0;
p_elem->p_val = 0;
p_elem->type = type;
return (p_elem);
}
_Bool
dat_empty(Dat *p_dat) {
if (p_dat == NULL)
return (false);
return (p_dat->i_size == 0);
}
void
dat_push(Dat *p_dat, void *p_val) {
dat_push_t(p_dat, p_val, TYPE_UNKNOWN);
}
void
dat_push_t(Dat *p_dat, void *p_val, TYPE type) {
DatElem *p_elem = datelem_new_t(type);
p_elem->p_val = p_val;
if (0 == p_dat->i_size++)
p_dat->p_first = p_elem;
else
p_dat->p_last->p_next = p_elem;
p_dat->p_last = p_elem;
}
void*
dat_pop(Dat *p_dat) {
TYPE type;
return (dat_pop_t(p_dat, &type));
}
void*
dat_pop_t(Dat *p_dat, TYPE *p_type) {
if (dat_empty(p_dat))
return (NULL);
DatElem *p_elem = p_dat->p_first;
p_dat->p_first = p_elem->p_next;
--p_dat->i_size;
void *p_ret = p_elem->p_val;
*p_type = p_elem->type;
free(p_elem);
return (p_ret);
}
void
dat_clear(Dat *p_dat) {
for (;!dat_empty(p_dat); dat_pop(p_dat));
}
void
dat_delete(Dat *p_dat) {
dat_clear(p_dat);
free(p_dat);
}
unsigned
dat_size(Dat *p_dat) {
return (p_dat->i_size);
}
void
dat_iterate(Dat *p_dat, void (*func)(void *)) {
DatElem *p_elem = p_dat->p_first;
while (p_elem) {
if (p_elem->p_val)
(*func) (p_elem->p_val);
p_elem = p_elem->p_next;
}
}
void
dat_iterate_t(Dat *p_dat, void (*func)(void *, TYPE)) {
DatElem *p_elem = p_dat->p_first;
while (p_elem) {
if (p_elem->p_val)
(*func) (p_elem->p_val, p_elem->type);
p_elem = p_elem->p_next;
}
}
void
dat_iterate_tl(Dat *p_dat, void (*func)(void *, TYPE, _Bool)) {
DatElem *p_elem = p_dat->p_first;
while (p_elem) {
if (p_elem->p_val)
(*func) (p_elem->p_val, p_elem->type, p_elem->p_next == NULL);
p_elem = p_elem->p_next;
}
}
void*
dat_first(Dat *p_dat) {
if (dat_empty(p_dat))
return (NULL);
return (p_dat->p_first->p_val);
}
void*
dat_second(Dat *p_dat) {
if (2 > dat_size(p_dat))
return (NULL);
return (p_dat->p_first->p_next->p_val);
}
void*
dat_last(Dat *p_dat) {
if (dat_empty(p_dat))
return (NULL);
return (p_dat->p_last->p_val);
}
void*
dat_first_t(Dat *p_dat, TYPE *p_type) {
if (dat_empty(p_dat))
return (NULL);
*p_type = p_dat->p_first->type;
return (p_dat->p_first->p_val);
}
void*
dat_second_t(Dat *p_dat, TYPE *p_type) {
if (2 > dat_size(p_dat))
return (NULL);
*p_type = p_dat->p_first->p_next->type;
return (p_dat->p_first->p_next->p_val);
}
void*
dat_last_t(Dat *p_dat, TYPE *p_type) {
if (dat_empty(p_dat))
return (NULL);
*p_type = p_dat->p_last->type;
return (p_dat->p_last->p_val);
}
DatIter*
datiter_new(Dat *p_dat) {
DatIter *p_iter =
(DatIter *) malloc(sizeof(DatIter));
p_iter->p_current = NULL;
p_iter->p_next = p_dat->p_first;
p_iter->i_left = dat_size(p_dat);
p_iter->p_dat = p_dat;
return (p_iter);
}
void
datiter_delete(DatIter *p_iter) {
free(p_iter);
}
void
datiter_skip(DatIter *p_iter, unsigned i_num) {
for (int i = 0; i < i_num; ++i)
datiter_next(p_iter);
}
void*
datiter_next(DatIter *p_iter) {
TYPE type;
return (datiter_next_t(p_iter, &type));
}
void*
datiter_next_t(DatIter *p_iter, TYPE *p_type) {
if (p_iter->p_next == NULL)
return (NULL);
void *p_ret = p_iter->p_next->p_val;
*p_type = p_iter->p_next->type;
p_iter->p_current = p_iter->p_next;
p_iter->p_next = p_iter->p_next->p_next;
--p_iter->i_left;
return (p_ret);
}
unsigned
datiter_left(DatIter *p_iter) {
return (p_iter->i_left);
}
Dat*
datiter_dat(DatIter *p_iter) {
return (p_iter->p_dat);
}
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