void slip_release(pSlip gd)
{
DLElement *e;
e = dlist_tail(gd->lstObjects);
while (e != NULL)
{
pSlipObject obj;
obj = dlist_data(e);
e = dlist_prev(e);
s_ReleaseObject(gd, obj);
}
FreeDList(gd->lstObjects);
FreeDList(gd->lstSymbols);
FreeDList(gd->lstStrings);
FreeDList(gd->lstGlobalEnvironment);
FreeDList(gd->parse_data.lstTokens);
free(gd);
}
static LakeVal *_lambda(LakeCtx *ctx, Env *env, LakeList *expr)
{
/* (lambda (a b c) ...) */
if (LIST_N(expr) >= 3 && lake_is_type(TYPE_LIST, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "lambda" symbol */
LakeList *params = LIST(list_shift(expr));
LakeList *body = expr;
return VAL(fn_make(params, NULL, body, env));
}
else if (LIST_N(expr) >= 3 && lake_is_type(TYPE_DLIST, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "lambda" symbol */
LakeDottedList *def = DLIST(list_shift(expr));
LakeList *params = dlist_head(def);
LakeSym *varargs = SYM(dlist_tail(def));
LakeList *body = expr;
return VAL(fn_make(params, varargs, body, env));
}
else if (LIST_N(expr) >= 3 && lake_is_type(TYPE_SYM, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "lambda" symbol */
LakeSym *varargs = SYM(list_shift(expr));
LakeList *body = expr;
return VAL(fn_make(list_make(), varargs, body, env));
}
else {
invalid_special_form(expr, "lambda requires at least 2 parameters");
return NULL;
}
}
void dlist_destroy(dlist_t *list)
{
void *data;
while (dlist_size(list) > 0)
{
if (dlist_remove(list, dlist_tail(list), (void **)&data) == 0 && list->destroy != NULL)
list->destroy(data);
}
memset(list, 0, sizeof(dlist_t));
}
//删除所有节点，利用init函数的destroy函数来清理内存
void dlist_destroy(DList* list)
{
void *data;
while((dlist_size(list))>0){
if(dlist_remove(list,dlist_tail(list),(void **)&data)==0
&& list->destroy != NULL){
list->destroy(data);
}
}
}
void dlist_destroy(DList *list)
{
void *data;
while (dlist_size(list) > 0){
if (dlist_remove(list, dlist_tail(list), (void**)&data) == 0 && list->destroy != NULL){
//saukiam vartotojo nustatyta funkcija destroy dinaminei atminciai atlaisvinti
list->destroy(data);
}
}
}
// destroy a list by removing all the elements
void dlist_destroy (DList *list)
{
void *data;
while (dlist_size(list) > 0) {
if ((dlist_remove(list, dlist_tail(list), (void **)&data)) == 0 && list-destroy != NULL) {
list->destroy (data);
}
}
memset (list, 0, sizeof(DList));
return;
}
/* dlist_destroy */
void dlist_destroy(Dlist *list) {
void *data;
/* Remove each element. */
while(dlist_size(list) > 0) {
if(dlist_remove(list, dlist_tail(list), (void **)&data) == 0 && list->destroy != NULL) {
/* call a user-defined function to free dynamically allocated data. */
list->destroy(data);
}
}
/* no operations are allowed now, but clear the structure as a precaution. */
memset(list, 0, sizeof(DList));
return;
}
void dlist_destroy(DList *list)
{
/* Destroy the double list */
void *data;
while(dlist_size(list) != 0) {
if (dlist_remove(list, dlist_tail(list), (void **)&data) == 0 &&
list->destroy != NULL) {
list->destroy(data);
}
}
memset(list, 0, sizeof(DList));
return;
}
int visit(struct bitree_node *node)
{
struct dlist *list;
if (!visit_list) {
visit_list = (struct dlist *) malloc(sizeof(struct dlist));
dlist_init(visit_list, NULL);
}
list = visit_list;
if (!node || !node->data)
return -1;
dlist_ins_next(list, dlist_tail(list), (const void *) node->data);
return 0;
}
void dlist_destroy(DList *list)
{
/* Will point to data payload to be removed for each element */
void *data;
/* Remove each element (and its payload) */
while (dlist_size(list) > 0) {
if (dlist_remove(list, dlist_tail(list), (void **)&data) != 0) {
fprintf(stderr, "Problem removing element from dlist\n");
return;
}
if (list->destroy != NULL)
list->destroy(data);
}
/* Zero list out */
memset(list, 0, sizeof(DList));
return;
}
static LakeVal *_define(LakeCtx *ctx, Env *env, LakeList *expr)
{
/* TODO: make these more robust, check all expected params */
/* (define x 42) */
if (LIST_N(expr) == 3 && lake_is_type(TYPE_SYM, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "define" symbol */
LakeSym *var = SYM(list_shift(expr));
LakeVal *form = list_shift(expr);
env_define(env, var, eval(ctx, env, form));
}
/* (define (inc x) (+ 1 x)) */
else if (LIST_N(expr) >= 3 && lake_is_type(TYPE_LIST, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "define" symbol */
LakeList *params = LIST(list_shift(expr));
LakeSym *var = SYM(list_shift(params));
LakeList *body = expr;
env_define(env, var, VAL(fn_make(params, NULL, body, env)));
}
/* (define (print format . args) (...)) */
else if (LIST_N(expr) >= 3 && lake_is_type(TYPE_DLIST, LIST_VAL(expr, 1))) {
list_shift(expr); /* drop the "define" symbol */
LakeDottedList *def = DLIST(list_shift(expr));
LakeList *params = dlist_head(def);
LakeSym *varargs = SYM(dlist_tail(def));
LakeSym *var = SYM(list_shift(params));
LakeList *body = expr;
env_define(env, var, VAL(fn_make(params, varargs, body, env)));
}
else {
invalid_special_form(expr, "define requires at least 2 parameters");
}
return NULL;
}
SERVER *server_add(char *host, u_short port, char ipv6)
{
SERVER *server;
if (port == 0 || host == NULL)
return NULL;
server = malloc(sizeof(SERVER));
bzero(server, sizeof(SERVER));
strncpy(server->host, host, MAX_HOSTNAME_LEN - 1);
server->host[MAX_HOSTNAME_LEN - 1] = '\0';
server->port = port;
#ifdef IPV6
server->ipv6 = ipv6;
#endif
dlist_ins_next(&e_global->servers, dlist_tail(&e_global->servers), server);
log(LOG_INIT_DEBUG, "Server %s (Port: %i) has been added.",
server->host, server->port);
return server;
}
int main(int argc, char **argv) {
DList list;
DListElmt *element;
int *data,
i;
/*****************************************************************************
* *
* Initialize the doubly-linked list. *
* *
*****************************************************************************/
dlist_init(&list, free);
/*****************************************************************************
* *
* Perform some doubly-linked list operations. *
* *
*****************************************************************************/
element = dlist_head(&list);
for (i = 10; i > 0; i--) {
if ((data = (int *)malloc(sizeof(int))) == NULL)
return 1;
*data = i;
if (dlist_ins_prev(&list, dlist_head(&list), data) != 0)
return 1;
}
print_list(&list);
element = dlist_head(&list);
for (i = 0; i < 8; i++)
element = dlist_next(element);
data = dlist_data(element);
fprintf(stdout, "Removing an element after the one containing %03d\n", *data);
if (dlist_remove(&list, element, (void **)&data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Inserting 011 at the tail of the list\n");
*data = 11;
if (dlist_ins_next(&list, dlist_tail(&list), data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Removing an element at the tail of the list\n");
element = dlist_tail(&list);
if (dlist_remove(&list, element, (void **)&data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Inserting 012 just before the tail of the list\n");
*data = 12;
if (dlist_ins_prev(&list, dlist_tail(&list), data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Iterating and removing the fourth element\n");
element = dlist_head(&list);
element = dlist_next(element);
element = dlist_prev(element);
element = dlist_next(element);
element = dlist_prev(element);
element = dlist_next(element);
element = dlist_next(element);
element = dlist_next(element);
if (dlist_remove(&list, element, (void **)&data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Inserting 013 before the first element\n");
*data = 13;
if (dlist_ins_prev(&list, dlist_head(&list), data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Removing an element at the head of the list\n");
if (dlist_remove(&list, dlist_head(&list), (void **)&data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Inserting 014 just after the head of the list\n");
*data = 14;
if (dlist_ins_next(&list, dlist_head(&list), data) != 0)
return 1;
print_list(&list);
fprintf(stdout, "Inserting 015 two elements after the head of the list\n");
if ((data = (int *)malloc(sizeof(int))) == NULL)
return 1;
*data = 15;
element = dlist_head(&list);
element = dlist_next(element);
if (dlist_ins_next(&list, element, data) != 0)
return 1;
print_list(&list);
i = dlist_is_head(dlist_head(&list));
fprintf(stdout, "Testing dlist_is_head...Value=%d (1=OK)\n", i);
i = dlist_is_head(dlist_tail(&list));
fprintf(stdout, "Testing dlist_is_head...Value=%d (0=OK)\n", i);
i = dlist_is_tail(dlist_tail(&list));
fprintf(stdout, "Testing dlist_is_tail...Value=%d (1=OK)\n", i);
i = dlist_is_tail(dlist_head(&list));
fprintf(stdout, "Testing dlist_is_tail...Value=%d (0=OK)\n", i);
/*****************************************************************************
* *
* Destroy the doubly-linked list. *
* *
*****************************************************************************/
fprintf(stdout, "Destroying the list\n");
dlist_destroy(&list);
return 0;
}
void dlist_remove_tail(dlist *d)
{
dlist_remove(d, dlist_tail(d));
}
int enqueue(Queue *queue, const void *data) {
return dlist_ins_next(queue, dlist_tail(queue), data);
}