C two functions in one with casts
- by Favolas
I have two functions that do the exact same thing but in two different types of struct and this two types of struct are very similar.
Imagine I have this two structs.
typedef struct nodeOne{
Date *date;
struct nodeOne *next;
struct nodeOne *prev;
}NodeOne;
typedef struct nodeTwo{
Date *date;
struct nodeTwo *next;
struct nodeTwo *prev;
}NodeTwo;
Since my function to destroy each of the list is almost the same (Just the type of the arguments are different) I would like to make just one function to make the two thins.
I have this two functions
void destroyListOne(NodeOne **head, NodeOne **tail){
NodeOne *aux;
while (*head != NULL){
aux = *head;
*head = (*head)->next;
free(aux);
}
*tail = NULL;
}
and this one:
void destroyListTwo(NodeTwo **head, NodeTwo **tail){
NodeTwo *aux;
while (*head != NULL){
aux = *head;
*head = (*head)->next;
free(aux);
}
*tail = NULL;
}
Since they are very similar I thought making something like this:
void destroyList(void **ini, void **end, int listType){
if (listType == 0) {
NodeOne *aux;
NodeOne head = (NodeOne) ini;
NodeOne tail = (NodeOne) ed;
}
else {
NodeTwo *aux;
NodeTwo head = (NodeTwo) ini;
NodeTwo tail = (NodeTwo) ed;
}
while (*head != NULL){
aux = *head;
*head = (*head)->next;
free(aux);
}
*tail = NULL;
}
As you may now this is not working but I want to know if this is possible to achieve.
I must maintain both of the structs as they are.
