You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
3.2 KiB
86 lines
3.2 KiB
/*
|
|
Copyright (c) 2012 Martin Sustrik All rights reserved.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"),
|
|
to deal in the Software without restriction, including without limitation
|
|
the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
and/or sell copies of the Software, and to permit persons to whom
|
|
the Software is furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef NN_LIST_INCLUDED
|
|
#define NN_LIST_INCLUDED
|
|
|
|
struct nn_list_item {
|
|
struct nn_list_item *next;
|
|
struct nn_list_item *prev;
|
|
};
|
|
|
|
struct nn_list {
|
|
struct nn_list_item *first;
|
|
struct nn_list_item *last;
|
|
};
|
|
|
|
/* Undefined value for initializing a list item which is not part of a list. */
|
|
#define NN_LIST_NOTINLIST ((struct nn_list_item*) -1)
|
|
|
|
/* Use for initializing a list item statically. */
|
|
#define NN_LIST_ITEM_INITIALIZER {NN_LIST_NOTINLIST, NN_LIST_NOTINLIST}
|
|
|
|
/* Initialise the list. */
|
|
void nn_list_init (struct nn_list *self);
|
|
|
|
/* Terminates the list. Note that all items must be removed before the
|
|
termination. */
|
|
void nn_list_term (struct nn_list *self);
|
|
|
|
/* Returns 1 is list has zero items, 0 otherwise. */
|
|
int nn_list_empty (struct nn_list *self);
|
|
|
|
/* Returns iterator to the first item in the list. */
|
|
struct nn_list_item *nn_list_begin (struct nn_list *self);
|
|
|
|
/* Returns iterator to one past the last item in the list. */
|
|
struct nn_list_item *nn_list_end (struct nn_list *self);
|
|
|
|
/* Returns iterator to an item prior to the one pointed to by 'it'. */
|
|
struct nn_list_item *nn_list_prev (struct nn_list *self,
|
|
struct nn_list_item *it);
|
|
|
|
/* Returns iterator to one past the item pointed to by 'it'. */
|
|
struct nn_list_item *nn_list_next (struct nn_list *self,
|
|
struct nn_list_item *it);
|
|
|
|
/* Adds the item to the list before the item pointed to by 'it'. Priot to
|
|
insertion item should not be part of any list. */
|
|
void nn_list_insert (struct nn_list *self, struct nn_list_item *item,
|
|
struct nn_list_item *it);
|
|
|
|
/* Removes the item from the list and returns pointer to the next item in the
|
|
list. Item must be part of the list. */
|
|
struct nn_list_item *nn_list_erase (struct nn_list *self,
|
|
struct nn_list_item *item);
|
|
|
|
/* Initialize a list item. At this point it is not part of any list. */
|
|
void nn_list_item_init (struct nn_list_item *self);
|
|
|
|
/* Terminates a list item. Item must not be part of any list before it's
|
|
terminated. */
|
|
void nn_list_item_term (struct nn_list_item *self);
|
|
|
|
/* Returns 1 is the item is part of a list, 0 otherwise. */
|
|
int nn_list_item_isinlist (struct nn_list_item *self);
|
|
|
|
#endif
|
|
|