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Bug fixes to list module

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This commit is contained in:
Walter Hennecke 2013-02-13 11:57:18 +01:00
parent c496a24d57
commit 2ffffcd6e4
1 changed files with 20 additions and 5 deletions
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25
code/game/list.c
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@ -23,7 +23,6 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <stdlib.h>
#include <string.h>
list_p create_list(){
list_p list = (list_p) malloc(sizeof(struct list));
list->length = 0;
@ -41,7 +40,11 @@ list_iter_p list_iterator(list_p list, char init){
else if(init==BACK){
iter->current = list->last;
}
else return NULL;
else {
if(iter != NULL)
free(iter);
return NULL;
}
iter->list = list;
iter->started = 0;
return iter;
@ -140,8 +143,14 @@ void* list_pop(list_p list){
if(last == NULL) return NULL;
list->last = last->prev;
void* data = last->data;
last->prev->next = NULL;
if(last->prev != NULL) {
last->prev->next = NULL;
}
free(last);
list->length--;
if(list->length == 0) {
list->last = list->first = NULL;
}
return data;
}
@ -150,8 +159,14 @@ void* list_poll(list_p list){
if(first == NULL) return NULL;
list->first = first->next;
void* data = first->data;
first->next->prev = NULL;
if(first->next != NULL) {
first->next->prev = NULL;
}
free(first);
list->length--;
if(list->length == 0) {
list->last = list->first = NULL;
}
return data;
}
@ -183,4 +198,4 @@ void destroy_iterator(list_iter_p iter) {
if(iter == NULL) return;
free(iter);
}
}