void alias_list_delete(struct alias_list *list)
{
	struct alias *current = list->first;

	while (current != NULL)
	{
		struct alias *previous = current;
		current = current->next;
        alias_delete(previous);
	}

	free(list);
}

// Append the given (key, value) pair to the given list
//
// Python: list.append((key, value))
void alias_list_append(struct alias_list *list, char *key, char *value)
{
	if (list->first==NULL){
		struct *alias = alias_create(key, value);
		list->first = alias;
	}
	else{
		struct alias *current = list->first;
		while (current->next != NULL){
			current = current->next;
		}
		struct *alias = alias_create(key, value);
		current->next = alias;
	}
}

// Return the value of the element with the given key. If the given key was not
// found, the value NULL is returned.
char *alias_list_lookup(struct alias_list *list, char *key)
{
	if(list->first!=NULL){
		struct *current=list->first;
		if(strcmp(current->key,key)==0){
			return current->value;
		}
		while(current->next!=NULL){
			current = current->next;
			if(strcmp(current->key,key)==0){
				return current->value;
			}
		}
	}
	return NULL;
}