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#ifndef TYPE
#error "Set TYPE before including this file"
#else
int CONSTRUCTOR_DECL ( LLIST(TYPE) ) {
this->length = 0;
NEW(LINK(TYPE), head);
NEW(LINK(TYPE), tail);
this->head = head;
this->tail = tail;
head->after = tail;
tail->before = head;
this->cur = head;
return 0;
}
int FREE_DECL( LLIST(TYPE) ) {
LINK(TYPE) *node, *next;
node = this->head->after;
while (node->after != NULL) {
next = node->after;
if (node->value != NULL) {
FFREE(TYPE, node->value);
}
// free(node);
node = next;
}
free (this->head);
free (this->tail);
this->length = 0;
return 0;
}
int CONSTRUCTOR_DECL ( LINK(TYPE) ) {
this->before = NULL;
this->after = NULL;
this->value = NULL;
return 0;
}
int CONSTRUCTOR_DECL ( LINK(TYPE), TYPE* val ) {
this->before = NULL;
this->after = NULL;
this->value = val;
return 0;
}
int LLIST_CONS(TYPE) ( LLIST(TYPE)* lst, TYPE* val) {
NEW(LINK(TYPE), l, val);
l->after = lst->head->after;
lst->head->after = l;
l->after->before = l;
l->before = lst->head;
++lst->length;
// TODO do I want to change that?
lst->cur = l;
return 0;
}
int DEEP_COPY(LLIST(TYPE)) ( LLIST(TYPE)* dest, LLIST(TYPE)* src ) {
LINK(TYPE)* n = src->head->after;
while (n->after != NULL) {
NEW(TYPE, cpy);
DEEP_COPY(TYPE)(cpy, n->value);
LLIST_CONS(TYPE) ( dest, cpy );
n = n->after;
}
return 0;
}
/*
* TODO
* this or cons links wrong, creating infinite loops.
*/
int APPEND(LLIST(TYPE)) ( LLIST(TYPE)* dest, LLIST(TYPE)* new ) {
dest->tail->before->after = new->head->after;
new->head->after->before = dest->tail->before;
LINK(TYPE)* old_tail = dest->tail;
dest->tail = new->tail;
dest->length += new->length;
// free(old_tail);
// free(new->head);
/*
* TODO `new` can now be handled as an empty husk.
* Somehow it needs to be collected
*/
return 0;
}
#endif /* TYPE */
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