diff options
Diffstat (limited to 'libX11/src/utlist.h')
-rw-r--r-- | libX11/src/utlist.h | 232 |
1 files changed, 116 insertions, 116 deletions
diff --git a/libX11/src/utlist.h b/libX11/src/utlist.h index 948eb6953..215c2c62e 100644 --- a/libX11/src/utlist.h +++ b/libX11/src/utlist.h @@ -1,116 +1,116 @@ -/*
-Copyright (c) 2007-2009, Troy D. Hanson
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef UTLIST_H
-#define UTLIST_H
-
-#define UTLIST_VERSION 1.7
-
-/* From: http://uthash.sourceforge.net/utlist.html */
-/*
- * This file contains macros to manipulate singly and doubly-linked lists.
- *
- * 1. LL_ macros: singly-linked lists.
- * 2. DL_ macros: doubly-linked lists.
- * 3. CDL_ macros: circular doubly-linked lists.
- *
- * To use singly-linked lists, your structure must have a "next" pointer.
- * To use doubly-linked lists, your structure must "prev" and "next" pointers.
- * Either way, the pointer to the head of the list must be initialized to NULL.
- *
- * ----------------.EXAMPLE -------------------------
- * struct item {
- * int id;
- * struct item *prev, *next;
- * }
- *
- * struct item *list = NULL:
- *
- * int main() {
- * struct item *item;
- * ... allocate and populate item ...
- * DL_APPEND(list, item);
- * }
- * --------------------------------------------------
- *
- * For doubly-linked lists, the append and delete macros are O(1)
- * For singly-linked lists, append and delete are O(n) but prepend is O(1)
- * The sort macro is O(n log(n)) for all types of single/double/circular lists.
- */
-
-
-/******************************************************************************
- * doubly linked list macros (non-circular) *
- *****************************************************************************/
-#define DL_PREPEND(head,add) \
-do { \
- (add)->next = head; \
- if (head) { \
- (add)->prev = (head)->prev; \
- (head)->prev = (add); \
- } else { \
- (add)->prev = (add); \
- } \
- (head) = (add); \
-} while (0)
-
-#define DL_APPEND(head,add) \
-do { \
- if (head) { \
- (add)->prev = (head)->prev; \
- (head)->prev->next = (add); \
- (head)->prev = (add); \
- (add)->next = NULL; \
- } else { \
- (head)=(add); \
- (head)->prev = (head); \
- (head)->next = NULL; \
- } \
-} while (0);
-
-#define DL_DELETE(head,del) \
-do { \
- if ((del)->prev == (del)) { \
- (head)=NULL; \
- } else if ((del)==(head)) { \
- (del)->next->prev = (del)->prev; \
- (head) = (del)->next; \
- } else { \
- (del)->prev->next = (del)->next; \
- if ((del)->next) { \
- (del)->next->prev = (del)->prev; \
- } else { \
- (head)->prev = (del)->prev; \
- } \
- } \
-} while (0);
-
-
-#define DL_FOREACH(head,el) \
- for(el=head;el;el=el->next)
-
-#define DL_FOREACH_SAFE(head,el,tmp) \
- for(el=head,tmp=el->next;el;el=tmp,tmp=(el) ? (el->next) : NULL)
-
-#endif /* UTLIST_H */
-
+/* +Copyright (c) 2007-2009, Troy D. Hanson +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef UTLIST_H +#define UTLIST_H + +#define UTLIST_VERSION 1.7 + +/* From: http://uthash.sourceforge.net/utlist.html */ +/* + * This file contains macros to manipulate singly and doubly-linked lists. + * + * 1. LL_ macros: singly-linked lists. + * 2. DL_ macros: doubly-linked lists. + * 3. CDL_ macros: circular doubly-linked lists. + * + * To use singly-linked lists, your structure must have a "next" pointer. + * To use doubly-linked lists, your structure must "prev" and "next" pointers. + * Either way, the pointer to the head of the list must be initialized to NULL. + * + * ----------------.EXAMPLE ------------------------- + * struct item { + * int id; + * struct item *prev, *next; + * } + * + * struct item *list = NULL: + * + * int main() { + * struct item *item; + * ... allocate and populate item ... + * DL_APPEND(list, item); + * } + * -------------------------------------------------- + * + * For doubly-linked lists, the append and delete macros are O(1) + * For singly-linked lists, append and delete are O(n) but prepend is O(1) + * The sort macro is O(n log(n)) for all types of single/double/circular lists. + */ + + +/****************************************************************************** + * doubly linked list macros (non-circular) * + *****************************************************************************/ +#define DL_PREPEND(head,add) \ +do { \ + (add)->next = head; \ + if (head) { \ + (add)->prev = (head)->prev; \ + (head)->prev = (add); \ + } else { \ + (add)->prev = (add); \ + } \ + (head) = (add); \ +} while (0) + +#define DL_APPEND(head,add) \ +do { \ + if (head) { \ + (add)->prev = (head)->prev; \ + (head)->prev->next = (add); \ + (head)->prev = (add); \ + (add)->next = NULL; \ + } else { \ + (head)=(add); \ + (head)->prev = (head); \ + (head)->next = NULL; \ + } \ +} while (0); + +#define DL_DELETE(head,del) \ +do { \ + if ((del)->prev == (del)) { \ + (head)=NULL; \ + } else if ((del)==(head)) { \ + (del)->next->prev = (del)->prev; \ + (head) = (del)->next; \ + } else { \ + (del)->prev->next = (del)->next; \ + if ((del)->next) { \ + (del)->next->prev = (del)->prev; \ + } else { \ + (head)->prev = (del)->prev; \ + } \ + } \ +} while (0); + + +#define DL_FOREACH(head,el) \ + for(el=head;el;el=el->next) + +#define DL_FOREACH_SAFE(head,el,tmp) \ + for(el=head,tmp=el->next;el;el=tmp,tmp=(el) ? (el->next) : NULL) + +#endif /* UTLIST_H */ + |