diff options
Diffstat (limited to 'src/list.h')
| -rw-r--r-- | src/list.h | 150 |
1 files changed, 91 insertions, 59 deletions
@@ -83,13 +83,14 @@ #define BFS_LIST_H #include "diag.h" + #include <stddef.h> #include <string.h> /** * Initialize a singly-linked list. * - * @param list + * @list * The list to initialize. * * --- @@ -116,9 +117,9 @@ /** * Initialize a singly-linked list item. * - * @param item + * @item * The item to initialize. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. * * --- @@ -200,7 +201,7 @@ /** * Get the head of a singly-linked list. * - * @param list + * @list * The list in question. * @return * The first item in the list. @@ -227,9 +228,9 @@ /** * Get the tail of a singly-linked list. * - * @param list + * @list * The list in question. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. * @return * The last item in the list. @@ -246,11 +247,11 @@ /** * Check if an item is attached to a singly-linked list. * - * @param list + * @list * The list to check. - * @param item + * @item * The item to check. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. * @return * Whether the item is attached to the list. @@ -267,13 +268,13 @@ /** * Insert an item into a singly-linked list. * - * @param list + * @list * The list to modify. - * @param cursor + * @cursor * A pointer to the item to insert after, e.g. &list->head or list->tail. - * @param item + * @item * The item to insert. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. * @return * A cursor for the next item. @@ -294,11 +295,11 @@ /** * Add an item to the tail of a singly-linked list. * - * @param list + * @list * The list to modify. - * @param item + * @item * The item to append. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. */ #define SLIST_APPEND(list, ...) \ @@ -310,11 +311,11 @@ /** * Add an item to the head of a singly-linked list. * - * @param list + * @list * The list to modify. - * @param item + * @item * The item to prepend. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. */ #define SLIST_PREPEND(list, ...) \ @@ -324,27 +325,43 @@ LIST_VOID_(SLIST_INSERT_(list, &(list)->head, item, __VA_ARGS__)) /** + * Splice a singly-linked list into another. + * + * @dest + * The destination list. + * @cursor + * A pointer to the item to splice after, e.g. &list->head or list->tail. + * @src + * The source list. + */ +#define SLIST_SPLICE(dest, cursor, src) \ + LIST_VOID_(SLIST_SPLICE_((dest), (cursor), (src))) + +#define SLIST_SPLICE_(dest, cursor, src) \ + *src->tail = *cursor, \ + *cursor = src->head, \ + dest->tail = *dest->tail ? src->tail : dest->tail, \ + SLIST_INIT(src) + +/** * Add an entire singly-linked list to the tail of another. * - * @param dest + * @dest * The destination list. - * @param src + * @src * The source list. */ #define SLIST_EXTEND(dest, src) \ - SLIST_EXTEND_((dest), (src)) - -#define SLIST_EXTEND_(dest, src) \ - (src->head ? (*dest->tail = src->head, dest->tail = src->tail, SLIST_INIT(src)) : (void)0) + SLIST_SPLICE(dest, (dest)->tail, src) /** * Remove an item from a singly-linked list. * - * @param list + * @list * The list to modify. - * @param cursor + * @cursor * A pointer to the item to remove, either &list->head or &prev->next. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. * @return * The removed item. @@ -357,10 +374,10 @@ #define SLIST_REMOVE__(list, cursor, next) \ (list->tail = (*cursor)->next ? list->tail : cursor, \ - slist_remove_impl(*cursor, cursor, &(*cursor)->next, sizeof(*cursor))) + slist_remove_(*cursor, cursor, &(*cursor)->next, sizeof(*cursor))) // Helper for SLIST_REMOVE() -static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_t size) { +static inline void *slist_remove_(void *ret, void *cursor, void *next, size_t size) { // ret = *cursor; // *cursor = ret->next; memcpy(cursor, next, size); @@ -372,9 +389,9 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Pop the head off a singly-linked list. * - * @param list + * @list * The list to modify. - * @param node (optional) + * @node (optional) * If specified, use head->node.next rather than head->next. * @return * The popped item, or NULL if the list was empty. @@ -391,13 +408,13 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Loop over the items in a singly-linked list. * - * @param type + * @type * The list item type. - * @param item + * @item * The induction variable name. - * @param list + * @list * The list to iterate. - * @param node (optional) + * @node (optional) * If specified, use head->node.next rather than head->next. */ #define for_slist(type, item, ...) \ @@ -412,9 +429,24 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ item = _next) /** + * Loop over a singly-linked list, popping each item. + * + * @type + * The list item type. + * @item + * The induction variable name. + * @list + * The list to drain. + * @node (optional) + * If specified, use head->node.next rather than head->next. + */ +#define drain_slist(type, item, ...) \ + for (type *item; (item = SLIST_POP(__VA_ARGS__));) + +/** * Initialize a doubly-linked list. * - * @param list + * @list * The list to initialize. */ #define LIST_INIT(list) \ @@ -433,9 +465,9 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Initialize a doubly-linked list item. * - * @param item + * @item * The item to initialize. - * @param node (optional) + * @node (optional) * If specified, use item->node.next rather than item->next. */ #define LIST_ITEM_INIT(...) \ @@ -465,11 +497,11 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Add an item to the tail of a doubly-linked list. * - * @param list + * @list * The list to modify. - * @param item + * @item * The item to append. - * @param node (optional) + * @node (optional) * If specified, use item->node.{prev,next} rather than item->{prev,next}. */ #define LIST_APPEND(list, ...) \ @@ -478,11 +510,11 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Add an item to the head of a doubly-linked list. * - * @param list + * @list * The list to modify. - * @param item + * @item * The item to prepend. - * @param node (optional) + * @node (optional) * If specified, use item->node.{prev,next} rather than item->{prev,next}. */ #define LIST_PREPEND(list, ...) \ @@ -491,11 +523,11 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Check if an item is attached to a doubly-linked list. * - * @param list + * @list * The list to check. - * @param item + * @item * The item to check. - * @param node (optional) + * @node (optional) * If specified, use item->node.{prev,next} rather than item->{prev,next}. * @return * Whether the item is attached to the list. @@ -512,13 +544,13 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Insert into a doubly-linked list after the given cursor. * - * @param list + * @list * The list to modify. - * @param cursor + * @cursor * Insert after this element. - * @param item + * @item * The item to insert. - * @param node (optional) + * @node (optional) * If specified, use item->node.{prev,next} rather than item->{prev,next}. */ #define LIST_INSERT(list, cursor, ...) \ @@ -537,11 +569,11 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Remove an item from a doubly-linked list. * - * @param list + * @list * The list to modify. - * @param item + * @item * The item to remove. - * @param node (optional) + * @node (optional) * If specified, use item->node.{prev,next} rather than item->{prev,next}. */ #define LIST_REMOVE(list, ...) \ @@ -558,13 +590,13 @@ static inline void *slist_remove_impl(void *ret, void *cursor, void *next, size_ /** * Loop over the items in a doubly-linked list. * - * @param type + * @type * The list item type. - * @param item + * @item * The induction variable name. - * @param list + * @list * The list to iterate. - * @param node (optional) + * @node (optional) * If specified, use head->node.next rather than head->next. */ #define for_list(type, item, ...) \ |