Mercurial > irccd
diff extern/libutlist/utlist.h @ 1067:f8fc0d12853d
misc: remove usage of BSD sys/queue.h (peer)
| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Mon, 12 Jul 2021 21:03:26 +0200 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/extern/libutlist/utlist.h Mon Jul 12 21:03:26 2021 +0200 @@ -0,0 +1,1073 @@ +/* +Copyright (c) 2007-2021, Troy D. Hanson http://troydhanson.github.com/uthash/ +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 2.3.0 + +#include <assert.h> + +/* + * 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. + */ + +/* These macros use decltype or the earlier __typeof GNU extension. + As decltype is only available in newer compilers (VS2010 or gcc 4.3+ + when compiling c++ source) this code uses whatever method is needed + or, for VS2008 where neither is available, uses casting workarounds. */ +#if !defined(LDECLTYPE) && !defined(NO_DECLTYPE) +#if defined(_MSC_VER) /* MS compiler */ +#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */ +#define LDECLTYPE(x) decltype(x) +#else /* VS2008 or older (or VS2010 in C mode) */ +#define NO_DECLTYPE +#endif +#elif defined(__BORLANDC__) || defined(__ICCARM__) || defined(__LCC__) || defined(__WATCOMC__) +#define NO_DECLTYPE +#else /* GNU, Sun and other compilers */ +#define LDECLTYPE(x) __typeof(x) +#endif +#endif + +/* for VS2008 we use some workarounds to get around the lack of decltype, + * namely, we always reassign our tmp variable to the list head if we need + * to dereference its prev/next pointers, and save/restore the real head.*/ +#ifdef NO_DECLTYPE +#define IF_NO_DECLTYPE(x) x +#define LDECLTYPE(x) char* +#define UTLIST_SV(elt,list) _tmp = (char*)(list); {char **_alias = (char**)&(list); *_alias = (elt); } +#define UTLIST_NEXT(elt,list,next) ((char*)((list)->next)) +#define UTLIST_NEXTASGN(elt,list,to,next) { char **_alias = (char**)&((list)->next); *_alias=(char*)(to); } +/* #define UTLIST_PREV(elt,list,prev) ((char*)((list)->prev)) */ +#define UTLIST_PREVASGN(elt,list,to,prev) { char **_alias = (char**)&((list)->prev); *_alias=(char*)(to); } +#define UTLIST_RS(list) { char **_alias = (char**)&(list); *_alias=_tmp; } +#define UTLIST_CASTASGN(a,b) { char **_alias = (char**)&(a); *_alias=(char*)(b); } +#else +#define IF_NO_DECLTYPE(x) +#define UTLIST_SV(elt,list) +#define UTLIST_NEXT(elt,list,next) ((elt)->next) +#define UTLIST_NEXTASGN(elt,list,to,next) ((elt)->next)=(to) +/* #define UTLIST_PREV(elt,list,prev) ((elt)->prev) */ +#define UTLIST_PREVASGN(elt,list,to,prev) ((elt)->prev)=(to) +#define UTLIST_RS(list) +#define UTLIST_CASTASGN(a,b) (a)=(b) +#endif + +/****************************************************************************** + * The sort macro is an adaptation of Simon Tatham's O(n log(n)) mergesort * + * Unwieldy variable names used here to avoid shadowing passed-in variables. * + *****************************************************************************/ +#define LL_SORT(list, cmp) \ + LL_SORT2(list, cmp, next) + +#define LL_SORT2(list, cmp, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + IF_NO_DECLTYPE(LDECLTYPE(list) _tmp;) \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + UTLIST_CASTASGN(_ls_p,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + UTLIST_SV(_ls_q,list); _ls_q = UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + } else if (_ls_qsize == 0 || !_ls_q) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + } else { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + } \ + if (_ls_tail) { \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,_ls_e,next); UTLIST_RS(list); \ + } else { \ + UTLIST_CASTASGN(list,_ls_e); \ + } \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + if (_ls_tail) { \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,NULL,next); UTLIST_RS(list); \ + } \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + + +#define DL_SORT(list, cmp) \ + DL_SORT2(list, cmp, prev, next) + +#define DL_SORT2(list, cmp, prev, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + IF_NO_DECLTYPE(LDECLTYPE(list) _tmp;) \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + UTLIST_CASTASGN(_ls_p,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + UTLIST_SV(_ls_q,list); _ls_q = UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while ((_ls_psize > 0) || ((_ls_qsize > 0) && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + } else if ((_ls_qsize == 0) || (!_ls_q)) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + } else { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + } \ + if (_ls_tail) { \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,_ls_e,next); UTLIST_RS(list); \ + } else { \ + UTLIST_CASTASGN(list,_ls_e); \ + } \ + UTLIST_SV(_ls_e,list); UTLIST_PREVASGN(_ls_e,list,_ls_tail,prev); UTLIST_RS(list); \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + UTLIST_CASTASGN((list)->prev, _ls_tail); \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,NULL,next); UTLIST_RS(list); \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + +#define CDL_SORT(list, cmp) \ + CDL_SORT2(list, cmp, prev, next) + +#define CDL_SORT2(list, cmp, prev, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + LDECLTYPE(list) _ls_oldhead; \ + LDECLTYPE(list) _tmp; \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + UTLIST_CASTASGN(_ls_p,list); \ + UTLIST_CASTASGN(_ls_oldhead,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + UTLIST_SV(_ls_q,list); \ + if (UTLIST_NEXT(_ls_q,list,next) == _ls_oldhead) { \ + _ls_q = NULL; \ + } else { \ + _ls_q = UTLIST_NEXT(_ls_q,list,next); \ + } \ + UTLIST_RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + if (_ls_q == _ls_oldhead) { _ls_q = NULL; } \ + } else if (_ls_qsize == 0 || !_ls_q) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + if (_ls_p == _ls_oldhead) { _ls_p = NULL; } \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; UTLIST_SV(_ls_p,list); _ls_p = \ + UTLIST_NEXT(_ls_p,list,next); UTLIST_RS(list); _ls_psize--; \ + if (_ls_p == _ls_oldhead) { _ls_p = NULL; } \ + } else { \ + _ls_e = _ls_q; UTLIST_SV(_ls_q,list); _ls_q = \ + UTLIST_NEXT(_ls_q,list,next); UTLIST_RS(list); _ls_qsize--; \ + if (_ls_q == _ls_oldhead) { _ls_q = NULL; } \ + } \ + if (_ls_tail) { \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,_ls_e,next); UTLIST_RS(list); \ + } else { \ + UTLIST_CASTASGN(list,_ls_e); \ + } \ + UTLIST_SV(_ls_e,list); UTLIST_PREVASGN(_ls_e,list,_ls_tail,prev); UTLIST_RS(list); \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + UTLIST_CASTASGN((list)->prev,_ls_tail); \ + UTLIST_CASTASGN(_tmp,list); \ + UTLIST_SV(_ls_tail,list); UTLIST_NEXTASGN(_ls_tail,list,_tmp,next); UTLIST_RS(list); \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + +/****************************************************************************** + * singly linked list macros (non-circular) * + *****************************************************************************/ +#define LL_PREPEND(head,add) \ + LL_PREPEND2(head,add,next) + +#define LL_PREPEND2(head,add,next) \ +do { \ + (add)->next = (head); \ + (head) = (add); \ +} while (0) + +#define LL_CONCAT(head1,head2) \ + LL_CONCAT2(head1,head2,next) + +#define LL_CONCAT2(head1,head2,next) \ +do { \ + LDECLTYPE(head1) _tmp; \ + if (head1) { \ + _tmp = (head1); \ + while (_tmp->next) { _tmp = _tmp->next; } \ + _tmp->next=(head2); \ + } else { \ + (head1)=(head2); \ + } \ +} while (0) + +#define LL_APPEND(head,add) \ + LL_APPEND2(head,add,next) + +#define LL_APPEND2(head,add,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + (add)->next=NULL; \ + if (head) { \ + _tmp = (head); \ + while (_tmp->next) { _tmp = _tmp->next; } \ + _tmp->next=(add); \ + } else { \ + (head)=(add); \ + } \ +} while (0) + +#define LL_INSERT_INORDER(head,add,cmp) \ + LL_INSERT_INORDER2(head,add,cmp,next) + +#define LL_INSERT_INORDER2(head,add,cmp,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + if (head) { \ + LL_LOWER_BOUND2(head, _tmp, add, cmp, next); \ + LL_APPEND_ELEM2(head, _tmp, add, next); \ + } else { \ + (head) = (add); \ + (head)->next = NULL; \ + } \ +} while (0) + +#define LL_LOWER_BOUND(head,elt,like,cmp) \ + LL_LOWER_BOUND2(head,elt,like,cmp,next) + +#define LL_LOWER_BOUND2(head,elt,like,cmp,next) \ + do { \ + if ((head) == NULL || (cmp(head, like)) >= 0) { \ + (elt) = NULL; \ + } else { \ + for ((elt) = (head); (elt)->next != NULL; (elt) = (elt)->next) { \ + if (cmp((elt)->next, like) >= 0) { \ + break; \ + } \ + } \ + } \ + } while (0) + +#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) + +#define LL_COUNT(head,el,counter) \ + LL_COUNT2(head,el,counter,next) \ + +#define LL_COUNT2(head,el,counter,next) \ +do { \ + (counter) = 0; \ + LL_FOREACH2(head,el,next) { ++(counter); } \ +} while (0) + +#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_ELEM2(head, el, add, next) \ +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_REPLACE_ELEM(head, el, add) \ + LL_REPLACE_ELEM2(head, el, add, next) + +#define LL_PREPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + LDECLTYPE(head) _tmp; \ + assert((head) != 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); \ + } \ + } \ + } else { \ + LL_APPEND2(head, add, next); \ + } \ +} while (0) \ + +#define LL_PREPEND_ELEM(head, el, add) \ + LL_PREPEND_ELEM2(head, el, add, next) + +#define LL_APPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (el)->next = (add); \ + } else { \ + LL_PREPEND2(head, add, next); \ + } \ +} while (0) \ + +#define LL_APPEND_ELEM(head, el, add) \ + LL_APPEND_ELEM2(head, el, add, next) + +#ifdef NO_DECLTYPE +/* Here are VS2008 / NO_DECLTYPE replacements for a few functions */ + +#undef LL_CONCAT2 +#define LL_CONCAT2(head1,head2,next) \ +do { \ + char *_tmp; \ + if (head1) { \ + _tmp = (char*)(head1); \ + while ((head1)->next) { (head1) = (head1)->next; } \ + (head1)->next = (head2); \ + UTLIST_RS(head1); \ + } else { \ + (head1)=(head2); \ + } \ +} while (0) + +#undef LL_APPEND2 +#define LL_APPEND2(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) + +#undef LL_INSERT_INORDER2 +#define LL_INSERT_INORDER2(head,add,cmp,next) \ +do { \ + if ((head) == NULL || (cmp(head, add)) >= 0) { \ + (add)->next = (head); \ + (head) = (add); \ + } else { \ + char *_tmp = (char*)(head); \ + while ((head)->next != NULL && (cmp((head)->next, add)) < 0) { \ + (head) = (head)->next; \ + } \ + (add)->next = (head)->next; \ + (head)->next = (add); \ + UTLIST_RS(head); \ + } \ +} while (0) + +#undef LL_DELETE2 +#define LL_DELETE2(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); \ + } \ + UTLIST_RS(head); \ + } \ +} while (0) + +#undef LL_REPLACE_ELEM2 +#define LL_REPLACE_ELEM2(head, el, add, next) \ +do { \ + assert((head) != NULL); \ + assert((el) != NULL); \ + assert((add) != NULL); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->next = head; \ + while ((add)->next->next && ((add)->next->next != (el))) { \ + (add)->next = (add)->next->next; \ + } \ + if ((add)->next->next) { \ + (add)->next->next = (add); \ + } \ + } \ + (add)->next = (el)->next; \ +} while (0) + +#undef LL_PREPEND_ELEM2 +#define LL_PREPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->next = (head); \ + while ((add)->next->next && ((add)->next->next != (el))) { \ + (add)->next = (add)->next->next; \ + } \ + if ((add)->next->next) { \ + (add)->next->next = (add); \ + } \ + } \ + (add)->next = (el); \ + } else { \ + LL_APPEND2(head, add, next); \ + } \ +} while (0) \ + +#endif /* NO_DECLTYPE */ + +/****************************************************************************** + * 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_INSERT_INORDER(head,add,cmp) \ + DL_INSERT_INORDER2(head,add,cmp,prev,next) + +#define DL_INSERT_INORDER2(head,add,cmp,prev,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + if (head) { \ + DL_LOWER_BOUND2(head, _tmp, add, cmp, next); \ + DL_APPEND_ELEM2(head, _tmp, add, prev, next); \ + } else { \ + (head) = (add); \ + (head)->prev = (head); \ + (head)->next = NULL; \ + } \ +} while (0) + +#define DL_LOWER_BOUND(head,elt,like,cmp) \ + DL_LOWER_BOUND2(head,elt,like,cmp,next) + +#define DL_LOWER_BOUND2(head,elt,like,cmp,next) \ +do { \ + if ((head) == NULL || (cmp(head, like)) >= 0) { \ + (elt) = NULL; \ + } else { \ + for ((elt) = (head); (elt)->next != NULL; (elt) = (elt)->next) { \ + if ((cmp((elt)->next, like)) >= 0) { \ + break; \ + } \ + } \ + } \ +} 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) { \ + UTLIST_CASTASGN(_tmp, (head2)->prev); \ + (head2)->prev = (head1)->prev; \ + (head1)->prev->next = (head2); \ + UTLIST_CASTASGN((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((head) != NULL); \ + 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_COUNT(head,el,counter) \ + DL_COUNT2(head,el,counter,next) \ + +#define DL_COUNT2(head,el,counter,next) \ +do { \ + (counter) = 0; \ + DL_FOREACH2(head,el,next) { ++(counter); } \ +} 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_ELEM2(head, el, add, prev, next) \ +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_REPLACE_ELEM(head, el, add) \ + DL_REPLACE_ELEM2(head, el, add, prev, next) + +#define DL_PREPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el); \ + (add)->prev = (el)->prev; \ + (el)->prev = (add); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->prev->next = (add); \ + } \ + } else { \ + DL_APPEND2(head, add, prev, next); \ + } \ +} while (0) \ + +#define DL_PREPEND_ELEM(head, el, add) \ + DL_PREPEND_ELEM2(head, el, add, prev, next) + +#define DL_APPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (add)->prev = (el); \ + (el)->next = (add); \ + if ((add)->next) { \ + (add)->next->prev = (add); \ + } else { \ + (head)->prev = (add); \ + } \ + } else { \ + DL_PREPEND2(head, add, prev, next); \ + } \ +} while (0) \ + +#define DL_APPEND_ELEM(head, el, add) \ + DL_APPEND_ELEM2(head, el, add, prev, next) + +#ifdef NO_DECLTYPE +/* Here are VS2008 / NO_DECLTYPE replacements for a few functions */ + +#undef DL_INSERT_INORDER2 +#define DL_INSERT_INORDER2(head,add,cmp,prev,next) \ +do { \ + if ((head) == NULL) { \ + (add)->prev = (add); \ + (add)->next = NULL; \ + (head) = (add); \ + } else if ((cmp(head, add)) >= 0) { \ + (add)->prev = (head)->prev; \ + (add)->next = (head); \ + (head)->prev = (add); \ + (head) = (add); \ + } else { \ + char *_tmp = (char*)(head); \ + while ((head)->next && (cmp((head)->next, add)) < 0) { \ + (head) = (head)->next; \ + } \ + (add)->prev = (head); \ + (add)->next = (head)->next; \ + (head)->next = (add); \ + UTLIST_RS(head); \ + if ((add)->next) { \ + (add)->next->prev = (add); \ + } else { \ + (head)->prev = (add); \ + } \ + } \ +} while (0) +#endif /* NO_DECLTYPE */ + +/****************************************************************************** + * circular doubly linked list macros * + *****************************************************************************/ +#define CDL_APPEND(head,add) \ + CDL_APPEND2(head,add,prev,next) + +#define CDL_APPEND2(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_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_INSERT_INORDER(head,add,cmp) \ + CDL_INSERT_INORDER2(head,add,cmp,prev,next) + +#define CDL_INSERT_INORDER2(head,add,cmp,prev,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + if (head) { \ + CDL_LOWER_BOUND2(head, _tmp, add, cmp, next); \ + CDL_APPEND_ELEM2(head, _tmp, add, prev, next); \ + } else { \ + (head) = (add); \ + (head)->next = (head); \ + (head)->prev = (head); \ + } \ +} while (0) + +#define CDL_LOWER_BOUND(head,elt,like,cmp) \ + CDL_LOWER_BOUND2(head,elt,like,cmp,next) + +#define CDL_LOWER_BOUND2(head,elt,like,cmp,next) \ +do { \ + if ((head) == NULL || (cmp(head, like)) >= 0) { \ + (elt) = NULL; \ + } else { \ + for ((elt) = (head); (elt)->next != (head); (elt) = (elt)->next) { \ + if ((cmp((elt)->next, like)) >= 0) { \ + break; \ + } \ + } \ + } \ +} 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) = NULL; \ + } else { \ + (del)->next->prev = (del)->prev; \ + (del)->prev->next = (del)->next; \ + if ((del) == (head)) (head)=(del)->next; \ + } \ +} while (0) + +#define CDL_COUNT(head,el,counter) \ + CDL_COUNT2(head,el,counter,next) \ + +#define CDL_COUNT2(head, el, counter,next) \ +do { \ + (counter) = 0; \ + CDL_FOREACH2(head,el,next) { ++(counter); } \ +} 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)) ? NULL : (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) ? NULL : (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_ELEM2(head, el, add, prev, next) \ +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_REPLACE_ELEM(head, el, add) \ + CDL_REPLACE_ELEM2(head, el, add, prev, next) + +#define CDL_PREPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el); \ + (add)->prev = (el)->prev; \ + (el)->prev = (add); \ + (add)->prev->next = (add); \ + if ((head) == (el)) { \ + (head) = (add); \ + } \ + } else { \ + CDL_APPEND2(head, add, prev, next); \ + } \ +} while (0) + +#define CDL_PREPEND_ELEM(head, el, add) \ + CDL_PREPEND_ELEM2(head, el, add, prev, next) + +#define CDL_APPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (add)->prev = (el); \ + (el)->next = (add); \ + (add)->next->prev = (add); \ + } else { \ + CDL_PREPEND2(head, add, prev, next); \ + } \ +} while (0) + +#define CDL_APPEND_ELEM(head, el, add) \ + CDL_APPEND_ELEM2(head, el, add, prev, next) + +#ifdef NO_DECLTYPE +/* Here are VS2008 / NO_DECLTYPE replacements for a few functions */ + +#undef CDL_INSERT_INORDER2 +#define CDL_INSERT_INORDER2(head,add,cmp,prev,next) \ +do { \ + if ((head) == NULL) { \ + (add)->prev = (add); \ + (add)->next = (add); \ + (head) = (add); \ + } else if ((cmp(head, add)) >= 0) { \ + (add)->prev = (head)->prev; \ + (add)->next = (head); \ + (add)->prev->next = (add); \ + (head)->prev = (add); \ + (head) = (add); \ + } else { \ + char *_tmp = (char*)(head); \ + while ((char*)(head)->next != _tmp && (cmp((head)->next, add)) < 0) { \ + (head) = (head)->next; \ + } \ + (add)->prev = (head); \ + (add)->next = (head)->next; \ + (add)->next->prev = (add); \ + (head)->next = (add); \ + UTLIST_RS(head); \ + } \ +} while (0) +#endif /* NO_DECLTYPE */ + +#endif /* UTLIST_H */