mirror of https://github.com/axmolengine/axmol.git
952 lines
52 KiB
C
952 lines
52 KiB
C
/*
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Copyright (c) 2007-2013, Troy D. Hanson http://troydhanson.github.com/uthash/
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef UTLIST_H
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#define UTLIST_H
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/// @cond DO_NOT_SHOW
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#define UTLIST_VERSION 1.9.8
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#include <assert.h>
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/*
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* This file contains macros to manipulate singly and doubly-linked lists.
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*
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* 1. LL_ macros: singly-linked lists.
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* 2. DL_ macros: doubly-linked lists.
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* 3. CDL_ macros: circular doubly-linked lists.
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*
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* To use singly-linked lists, your structure must have a "next" pointer.
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* To use doubly-linked lists, your structure must "prev" and "next" pointers.
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* Either way, the pointer to the head of the list must be initialized to NULL.
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*
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* ----------------.EXAMPLE -------------------------
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* struct item {
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* int id;
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* struct item *prev, *next;
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* }
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*
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* struct item *list = NULL:
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*
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* int main() {
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* struct item *item;
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* ... allocate and populate item ...
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* DL_APPEND(list, item);
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* }
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* --------------------------------------------------
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*
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* For doubly-linked lists, the append and delete macros are O(1)
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* For singly-linked lists, append and delete are O(n) but prepend is O(1)
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* The sort macro is O(n log(n)) for all types of single/double/circular lists.
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*/
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/* These macros use decltype or the earlier __typeof GNU extension.
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As decltype is only available in newer compilers (VS2010 or gcc 4.3+
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when compiling c++ code), this code uses whatever method is needed
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or, for VS2008 where neither is available, uses casting workarounds. */
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#ifdef _MSC_VER /* MS compiler */
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# if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */
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# define LDECLTYPE(x) decltype(x)
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# else /* VS2008 or older (or VS2010 in C mode) */
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# define NO_DECLTYPE
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# define LDECLTYPE(x) char*
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# endif
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#else /* GNU, Sun and other compilers */
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# define LDECLTYPE(x) __typeof(x)
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#endif
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/* for VS2008 we use some workarounds to get around the lack of decltype,
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* namely, we always reassign our tmp variable to the list head if we need
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* to dereference its prev/next pointers, and save/restore the real head.*/
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#ifdef NO_DECLTYPE
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# define _SV(elt, list) \
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_tmp = (char*)(list); \
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{ \
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char** _alias = (char**)&(list); \
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*_alias = (elt); \
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}
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# define _NEXT(elt, list, next) ((char*)((list)->next))
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# define _NEXTASGN(elt, list, to, next) \
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{ \
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char** _alias = (char**)&((list)->next); \
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*_alias = (char*)(to); \
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}
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/* #define _PREV(elt,list,prev) ((char*)((list)->prev)) */
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# define _PREVASGN(elt, list, to, prev) \
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{ \
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char** _alias = (char**)&((list)->prev); \
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*_alias = (char*)(to); \
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}
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# define _RS(list) \
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{ \
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char** _alias = (char**)&(list); \
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*_alias = _tmp; \
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}
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# define _CASTASGN(a, b) \
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{ \
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char** _alias = (char**)&(a); \
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*_alias = (char*)(b); \
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}
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#else
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# define _SV(elt, list)
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# define _NEXT(elt, list, next) ((elt)->next)
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# define _NEXTASGN(elt, list, to, next) ((elt)->next) = (to)
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/* #define _PREV(elt,list,prev) ((elt)->prev) */
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# define _PREVASGN(elt, list, to, prev) ((elt)->prev) = (to)
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# define _RS(list)
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# define _CASTASGN(a, b) (a) = (b)
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#endif
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/******************************************************************************
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* The sort macro is an adaptation of Simon Tatham's O(n log(n)) mergesort *
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* Unwieldy variable names used here to avoid shadowing passed-in variables. *
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*****************************************************************************/
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#define LL_SORT(list, cmp) LL_SORT2(list, cmp, next)
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#define LL_SORT2(list, cmp, next) \
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do \
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{ \
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LDECLTYPE(list) _ls_p; \
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LDECLTYPE(list) _ls_q; \
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LDECLTYPE(list) _ls_e; \
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LDECLTYPE(list) _ls_tail; \
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int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \
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if (list) \
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{ \
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_ls_insize = 1; \
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_ls_looping = 1; \
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while (_ls_looping) \
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{ \
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_CASTASGN(_ls_p, list); \
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list = NULL; \
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_ls_tail = NULL; \
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_ls_nmerges = 0; \
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while (_ls_p) \
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{ \
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_ls_nmerges++; \
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_ls_q = _ls_p; \
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_ls_psize = 0; \
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for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) \
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{ \
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_ls_psize++; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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if (!_ls_q) \
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break; \
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} \
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_ls_qsize = _ls_insize; \
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while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) \
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{ \
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if (_ls_psize == 0) \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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} \
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else if (_ls_qsize == 0 || !_ls_q) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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} \
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else if (cmp(_ls_p, _ls_q) <= 0) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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} \
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else \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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} \
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if (_ls_tail) \
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{ \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, _ls_e, next); \
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_RS(list); \
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} \
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else \
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{ \
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_CASTASGN(list, _ls_e); \
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} \
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_ls_tail = _ls_e; \
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} \
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_ls_p = _ls_q; \
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} \
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if (_ls_tail) \
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{ \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, NULL, next); \
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_RS(list); \
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} \
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if (_ls_nmerges <= 1) \
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{ \
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_ls_looping = 0; \
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} \
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_ls_insize *= 2; \
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} \
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} \
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} while (0)
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#define DL_SORT(list, cmp) DL_SORT2(list, cmp, prev, next)
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#define DL_SORT2(list, cmp, prev, next) \
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do \
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{ \
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LDECLTYPE(list) _ls_p; \
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LDECLTYPE(list) _ls_q; \
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LDECLTYPE(list) _ls_e; \
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LDECLTYPE(list) _ls_tail; \
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int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \
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if (list) \
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{ \
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_ls_insize = 1; \
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_ls_looping = 1; \
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while (_ls_looping) \
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{ \
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_CASTASGN(_ls_p, list); \
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list = NULL; \
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_ls_tail = NULL; \
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_ls_nmerges = 0; \
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while (_ls_p) \
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{ \
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_ls_nmerges++; \
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_ls_q = _ls_p; \
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_ls_psize = 0; \
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for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) \
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{ \
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_ls_psize++; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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if (!_ls_q) \
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break; \
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} \
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_ls_qsize = _ls_insize; \
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while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) \
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{ \
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if (_ls_psize == 0) \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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} \
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else if (_ls_qsize == 0 || !_ls_q) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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} \
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else if (cmp(_ls_p, _ls_q) <= 0) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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} \
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else \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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} \
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if (_ls_tail) \
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{ \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, _ls_e, next); \
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_RS(list); \
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} \
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else \
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{ \
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_CASTASGN(list, _ls_e); \
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} \
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_SV(_ls_e, list); \
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_PREVASGN(_ls_e, list, _ls_tail, prev); \
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_RS(list); \
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_ls_tail = _ls_e; \
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} \
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_ls_p = _ls_q; \
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} \
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_CASTASGN(list->prev, _ls_tail); \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, NULL, next); \
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_RS(list); \
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if (_ls_nmerges <= 1) \
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{ \
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_ls_looping = 0; \
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} \
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_ls_insize *= 2; \
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} \
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} \
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} while (0)
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#define CDL_SORT(list, cmp) CDL_SORT2(list, cmp, prev, next)
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#define CDL_SORT2(list, cmp, prev, next) \
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do \
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{ \
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LDECLTYPE(list) _ls_p; \
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LDECLTYPE(list) _ls_q; \
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LDECLTYPE(list) _ls_e; \
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LDECLTYPE(list) _ls_tail; \
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LDECLTYPE(list) _ls_oldhead; \
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LDECLTYPE(list) _tmp; \
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int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \
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if (list) \
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{ \
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_ls_insize = 1; \
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_ls_looping = 1; \
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while (_ls_looping) \
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{ \
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_CASTASGN(_ls_p, list); \
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_CASTASGN(_ls_oldhead, list); \
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list = NULL; \
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_ls_tail = NULL; \
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_ls_nmerges = 0; \
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while (_ls_p) \
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{ \
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_ls_nmerges++; \
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_ls_q = _ls_p; \
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_ls_psize = 0; \
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for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) \
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{ \
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_ls_psize++; \
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_SV(_ls_q, list); \
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if (_NEXT(_ls_q, list, next) == _ls_oldhead) \
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{ \
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_ls_q = NULL; \
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} \
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else \
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{ \
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_ls_q = _NEXT(_ls_q, list, next); \
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} \
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_RS(list); \
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if (!_ls_q) \
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break; \
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} \
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_ls_qsize = _ls_insize; \
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while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) \
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{ \
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if (_ls_psize == 0) \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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if (_ls_q == _ls_oldhead) \
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{ \
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_ls_q = NULL; \
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} \
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} \
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else if (_ls_qsize == 0 || !_ls_q) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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if (_ls_p == _ls_oldhead) \
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{ \
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_ls_p = NULL; \
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} \
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} \
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else if (cmp(_ls_p, _ls_q) <= 0) \
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{ \
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_ls_e = _ls_p; \
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_SV(_ls_p, list); \
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_ls_p = _NEXT(_ls_p, list, next); \
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_RS(list); \
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_ls_psize--; \
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if (_ls_p == _ls_oldhead) \
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{ \
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_ls_p = NULL; \
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} \
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} \
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else \
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{ \
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_ls_e = _ls_q; \
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_SV(_ls_q, list); \
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_ls_q = _NEXT(_ls_q, list, next); \
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_RS(list); \
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_ls_qsize--; \
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if (_ls_q == _ls_oldhead) \
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{ \
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_ls_q = NULL; \
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} \
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} \
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if (_ls_tail) \
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{ \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, _ls_e, next); \
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_RS(list); \
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} \
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else \
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{ \
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_CASTASGN(list, _ls_e); \
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} \
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_SV(_ls_e, list); \
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_PREVASGN(_ls_e, list, _ls_tail, prev); \
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_RS(list); \
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_ls_tail = _ls_e; \
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} \
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_ls_p = _ls_q; \
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} \
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_CASTASGN(list->prev, _ls_tail); \
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_CASTASGN(_tmp, list); \
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_SV(_ls_tail, list); \
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_NEXTASGN(_ls_tail, list, _tmp, next); \
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_RS(list); \
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if (_ls_nmerges <= 1) \
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{ \
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_ls_looping = 0; \
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} \
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_ls_insize *= 2; \
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} \
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} \
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} while (0)
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/******************************************************************************
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* singly linked list macros (non-circular) *
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*****************************************************************************/
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#define LL_PREPEND(head, add) LL_PREPEND2(head, add, next)
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#define LL_PREPEND2(head, add, next) \
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do \
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{ \
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(add)->next = head; \
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head = add; \
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} while (0)
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#define LL_CONCAT(head1, head2) LL_CONCAT2(head1, head2, next)
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#define LL_CONCAT2(head1, head2, next) \
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do \
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{ \
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LDECLTYPE(head1) _tmp; \
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if (head1) \
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{ \
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_tmp = head1; \
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while (_tmp->next) \
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{ \
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_tmp = _tmp->next; \
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} \
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_tmp->next = (head2); \
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} \
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else \
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{ \
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(head1) = (head2); \
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} \
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} while (0)
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#define LL_APPEND(head, add) LL_APPEND2(head, add, next)
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#define LL_APPEND2(head, add, next) \
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do \
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{ \
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LDECLTYPE(head) _tmp; \
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(add)->next = NULL; \
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if (head) \
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{ \
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_tmp = head; \
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while (_tmp->next) \
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{ \
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_tmp = _tmp->next; \
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} \
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_tmp->next = (add); \
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} \
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else \
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{ \
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(head) = (add); \
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} \
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} while (0)
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|
|
#define LL_DELETE(head, del) LL_DELETE2(head, del, next)
|
|
|
|
#define LL_DELETE2(head, del, next) \
|
|
do \
|
|
{ \
|
|
LDECLTYPE(head) _tmp; \
|
|
if ((head) == (del)) \
|
|
{ \
|
|
(head) = (head)->next; \
|
|
} \
|
|
else \
|
|
{ \
|
|
_tmp = head; \
|
|
while (_tmp->next && (_tmp->next != (del))) \
|
|
{ \
|
|
_tmp = _tmp->next; \
|
|
} \
|
|
if (_tmp->next) \
|
|
{ \
|
|
_tmp->next = ((del)->next); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Here are VS2008 replacements for LL_APPEND and LL_DELETE */
|
|
#define LL_APPEND_VS2008(head, add) LL_APPEND2_VS2008(head, add, next)
|
|
|
|
#define LL_APPEND2_VS2008(head, add, next) \
|
|
do \
|
|
{ \
|
|
if (head) \
|
|
{ \
|
|
(add)->next = head; /* use add->next as a temp variable */ \
|
|
while ((add)->next->next) \
|
|
{ \
|
|
(add)->next = (add)->next->next; \
|
|
} \
|
|
(add)->next->next = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
(add)->next = NULL; \
|
|
} while (0)
|
|
|
|
#define LL_DELETE_VS2008(head, del) LL_DELETE2_VS2008(head, del, next)
|
|
|
|
#define LL_DELETE2_VS2008(head, del, next) \
|
|
do \
|
|
{ \
|
|
if ((head) == (del)) \
|
|
{ \
|
|
(head) = (head)->next; \
|
|
} \
|
|
else \
|
|
{ \
|
|
char* _tmp = (char*)(head); \
|
|
while ((head)->next && ((head)->next != (del))) \
|
|
{ \
|
|
head = (head)->next; \
|
|
} \
|
|
if ((head)->next) \
|
|
{ \
|
|
(head)->next = ((del)->next); \
|
|
} \
|
|
{ \
|
|
char** _head_alias = (char**)&(head); \
|
|
*_head_alias = _tmp; \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
#ifdef NO_DECLTYPE
|
|
# undef LL_APPEND
|
|
# define LL_APPEND LL_APPEND_VS2008
|
|
# undef LL_DELETE
|
|
# define LL_DELETE LL_DELETE_VS2008
|
|
# undef LL_DELETE2
|
|
# define LL_DELETE2_VS2008
|
|
# undef LL_APPEND2
|
|
# define LL_APPEND2 LL_APPEND2_VS2008
|
|
# undef LL_CONCAT /* no LL_CONCAT_VS2008 */
|
|
# undef DL_CONCAT /* no DL_CONCAT_VS2008 */
|
|
#endif
|
|
/* end VS2008 replacements */
|
|
|
|
#define LL_FOREACH(head, el) LL_FOREACH2(head, el, next)
|
|
|
|
#define LL_FOREACH2(head, el, next) for (el = head; el; el = (el)->next)
|
|
|
|
#define LL_FOREACH_SAFE(head, el, tmp) LL_FOREACH_SAFE2(head, el, tmp, next)
|
|
|
|
#define LL_FOREACH_SAFE2(head, el, tmp, next) for ((el) = (head); (el) && (tmp = (el)->next, 1); (el) = tmp)
|
|
|
|
#define LL_SEARCH_SCALAR(head, out, field, val) LL_SEARCH_SCALAR2(head, out, field, val, next)
|
|
|
|
#define LL_SEARCH_SCALAR2(head, out, field, val, next) \
|
|
do \
|
|
{ \
|
|
LL_FOREACH2(head, out, next) \
|
|
{ \
|
|
if ((out)->field == (val)) \
|
|
break; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define LL_SEARCH(head, out, elt, cmp) LL_SEARCH2(head, out, elt, cmp, next)
|
|
|
|
#define LL_SEARCH2(head, out, elt, cmp, next) \
|
|
do \
|
|
{ \
|
|
LL_FOREACH2(head, out, next) \
|
|
{ \
|
|
if ((cmp(out, elt)) == 0) \
|
|
break; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define LL_REPLACE_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
LDECLTYPE(head) _tmp; \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
(add)->next = (el)->next; \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
_tmp = head; \
|
|
while (_tmp->next && (_tmp->next != (el))) \
|
|
{ \
|
|
_tmp = _tmp->next; \
|
|
} \
|
|
if (_tmp->next) \
|
|
{ \
|
|
_tmp->next = (add); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#define LL_PREPEND_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
LDECLTYPE(head) _tmp; \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
(add)->next = (el); \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
_tmp = head; \
|
|
while (_tmp->next && (_tmp->next != (el))) \
|
|
{ \
|
|
_tmp = _tmp->next; \
|
|
} \
|
|
if (_tmp->next) \
|
|
{ \
|
|
_tmp->next = (add); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
/******************************************************************************
|
|
* doubly linked list macros (non-circular) *
|
|
*****************************************************************************/
|
|
#define DL_PREPEND(head, add) DL_PREPEND2(head, add, prev, next)
|
|
|
|
#define DL_PREPEND2(head, add, prev, next) \
|
|
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) DL_APPEND2(head, add, prev, next)
|
|
|
|
#define DL_APPEND2(head, add, prev, next) \
|
|
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_CONCAT(head1, head2) DL_CONCAT2(head1, head2, prev, next)
|
|
|
|
#define DL_CONCAT2(head1, head2, prev, next) \
|
|
do \
|
|
{ \
|
|
LDECLTYPE(head1) _tmp; \
|
|
if (head2) \
|
|
{ \
|
|
if (head1) \
|
|
{ \
|
|
_tmp = (head2)->prev; \
|
|
(head2)->prev = (head1)->prev; \
|
|
(head1)->prev->next = (head2); \
|
|
(head1)->prev = _tmp; \
|
|
} \
|
|
else \
|
|
{ \
|
|
(head1) = (head2); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#define DL_DELETE(head, del) DL_DELETE2(head, del, prev, next)
|
|
|
|
#define DL_DELETE2(head, del, prev, next) \
|
|
do \
|
|
{ \
|
|
assert((del)->prev != NULL); \
|
|
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) DL_FOREACH2(head, el, next)
|
|
|
|
#define DL_FOREACH2(head, el, next) for (el = head; el; el = (el)->next)
|
|
|
|
/* this version is safe for deleting the elements during iteration */
|
|
#define DL_FOREACH_SAFE(head, el, tmp) DL_FOREACH_SAFE2(head, el, tmp, next)
|
|
|
|
#define DL_FOREACH_SAFE2(head, el, tmp, next) for ((el) = (head); (el) && (tmp = (el)->next, 1); (el) = tmp)
|
|
|
|
/* these are identical to their singly-linked list counterparts */
|
|
#define DL_SEARCH_SCALAR LL_SEARCH_SCALAR
|
|
#define DL_SEARCH LL_SEARCH
|
|
#define DL_SEARCH_SCALAR2 LL_SEARCH_SCALAR2
|
|
#define DL_SEARCH2 LL_SEARCH2
|
|
|
|
#define DL_REPLACE_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
(add)->next = (el)->next; \
|
|
if ((el)->next == NULL) \
|
|
{ \
|
|
(add)->prev = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->prev = (el)->prev; \
|
|
(add)->next->prev = (add); \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->next = (el)->next; \
|
|
(add)->prev = (el)->prev; \
|
|
(add)->prev->next = (add); \
|
|
if ((el)->next == NULL) \
|
|
{ \
|
|
(head)->prev = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->next->prev = (add); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#define DL_PREPEND_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
(add)->next = (el); \
|
|
(add)->prev = (el)->prev; \
|
|
(el)->prev = (add); \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->prev->next = (add); \
|
|
} \
|
|
} while (0)
|
|
|
|
/******************************************************************************
|
|
* circular doubly linked list macros *
|
|
*****************************************************************************/
|
|
#define CDL_PREPEND(head, add) CDL_PREPEND2(head, add, prev, next)
|
|
|
|
#define CDL_PREPEND2(head, add, prev, next) \
|
|
do \
|
|
{ \
|
|
if (head) \
|
|
{ \
|
|
(add)->prev = (head)->prev; \
|
|
(add)->next = (head); \
|
|
(head)->prev = (add); \
|
|
(add)->prev->next = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->prev = (add); \
|
|
(add)->next = (add); \
|
|
} \
|
|
(head) = (add); \
|
|
} while (0)
|
|
|
|
#define CDL_DELETE(head, del) CDL_DELETE2(head, del, prev, next)
|
|
|
|
#define CDL_DELETE2(head, del, prev, next) \
|
|
do \
|
|
{ \
|
|
if (((head) == (del)) && ((head)->next == (head))) \
|
|
{ \
|
|
(head) = 0L; \
|
|
} \
|
|
else \
|
|
{ \
|
|
(del)->next->prev = (del)->prev; \
|
|
(del)->prev->next = (del)->next; \
|
|
if ((del) == (head)) \
|
|
(head) = (del)->next; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define CDL_FOREACH(head, el) CDL_FOREACH2(head, el, next)
|
|
|
|
#define CDL_FOREACH2(head, el, next) for (el = head; el; el = ((el)->next == head ? 0L : (el)->next))
|
|
|
|
#define CDL_FOREACH_SAFE(head, el, tmp1, tmp2) CDL_FOREACH_SAFE2(head, el, tmp1, tmp2, prev, next)
|
|
|
|
#define CDL_FOREACH_SAFE2(head, el, tmp1, tmp2, prev, next) \
|
|
for ((el) = (head), ((tmp1) = (head) ? ((head)->prev) : NULL); (el) && ((tmp2) = (el)->next, 1); \
|
|
((el) = (((el) == (tmp1)) ? 0L : (tmp2))))
|
|
|
|
#define CDL_SEARCH_SCALAR(head, out, field, val) CDL_SEARCH_SCALAR2(head, out, field, val, next)
|
|
|
|
#define CDL_SEARCH_SCALAR2(head, out, field, val, next) \
|
|
do \
|
|
{ \
|
|
CDL_FOREACH2(head, out, next) \
|
|
{ \
|
|
if ((out)->field == (val)) \
|
|
break; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define CDL_SEARCH(head, out, elt, cmp) CDL_SEARCH2(head, out, elt, cmp, next)
|
|
|
|
#define CDL_SEARCH2(head, out, elt, cmp, next) \
|
|
do \
|
|
{ \
|
|
CDL_FOREACH2(head, out, next) \
|
|
{ \
|
|
if ((cmp(out, elt)) == 0) \
|
|
break; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define CDL_REPLACE_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
if ((el)->next == (el)) \
|
|
{ \
|
|
(add)->next = (add); \
|
|
(add)->prev = (add); \
|
|
(head) = (add); \
|
|
} \
|
|
else \
|
|
{ \
|
|
(add)->next = (el)->next; \
|
|
(add)->prev = (el)->prev; \
|
|
(add)->next->prev = (add); \
|
|
(add)->prev->next = (add); \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#define CDL_PREPEND_ELEM(head, el, add) \
|
|
do \
|
|
{ \
|
|
assert(head != NULL); \
|
|
assert(el != NULL); \
|
|
assert(add != NULL); \
|
|
(add)->next = (el); \
|
|
(add)->prev = (el)->prev; \
|
|
(el)->prev = (add); \
|
|
(add)->prev->next = (add); \
|
|
if ((head) == (el)) \
|
|
{ \
|
|
(head) = (add); \
|
|
} \
|
|
} while (0)
|
|
|
|
/// @endcond
|
|
#endif /* UTLIST_H */
|