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Streamlined single linked lists some more.

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wael 2022-02-16 13:45:08 +02:00
parent aaa1b8bb5d
commit 56e195c9b4
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1 changed files with 4 additions and 4 deletions
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8
linked_lists/single_linked_list.c
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@ -160,7 +160,7 @@ static inline void* read_node_i_single_linked_list(linked_list_t *list, size_t i
/* Check if dealing with the head. */
if (!i)
return list->head->data;
return (list->head) ? list->head->data : NULL;
/* Loop and read. */
node_t *current = list->head;
@ -168,7 +168,7 @@ static inline void* read_node_i_single_linked_list(linked_list_t *list, size_t i
current = current->next;
/* Got to the requested node, return the stored data. */
return current->data;
return (current) ? current->data : NULL;
}
/* This function retrieves a pointer to the ith node, returns NULL on failure. */
@ -340,7 +340,7 @@ static inline void remove_node_head_data_single_linked_list(linked_list_t *list,
/* This function reads the data at the last node, will return NULL on invalid input or first node being NULL. */
static inline void* read_node_tail_single_linked_list(linked_list_t *list) {
/* Sanity check. */
assert(list && (list->head));
assert(list);
/* Delegate. */
return read_node_i_single_linked_list(list, list->length - 1);
@ -350,7 +350,7 @@ static inline void* read_node_tail_single_linked_list(linked_list_t *list) {
/* Sets the error code in error (instead of returning it). */
static inline node_t* get_node_tail_single_linked_list(linked_list_t *list) {
/* Sanity check. */
assert(list && (list->head));
assert(list);
/* Delegate. */
return get_node_i_single_linked_list(list, list->length - 1);