зеркало из https://github.com/mozilla/pjs.git
140 строки
4.1 KiB
C
140 строки
4.1 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code, released
|
|
* March 31, 1998.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef jsclist_h___
|
|
#define jsclist_h___
|
|
|
|
#include "jstypes.h"
|
|
|
|
/*
|
|
** Circular linked list
|
|
*/
|
|
typedef struct JSCListStr {
|
|
struct JSCListStr *next;
|
|
struct JSCListStr *prev;
|
|
} JSCList;
|
|
|
|
/*
|
|
** Insert element "_e" into the list, before "_l".
|
|
*/
|
|
#define JS_INSERT_BEFORE(_e,_l) \
|
|
JS_BEGIN_MACRO \
|
|
(_e)->next = (_l); \
|
|
(_e)->prev = (_l)->prev; \
|
|
(_l)->prev->next = (_e); \
|
|
(_l)->prev = (_e); \
|
|
JS_END_MACRO
|
|
|
|
/*
|
|
** Insert element "_e" into the list, after "_l".
|
|
*/
|
|
#define JS_INSERT_AFTER(_e,_l) \
|
|
JS_BEGIN_MACRO \
|
|
(_e)->next = (_l)->next; \
|
|
(_e)->prev = (_l); \
|
|
(_l)->next->prev = (_e); \
|
|
(_l)->next = (_e); \
|
|
JS_END_MACRO
|
|
|
|
/*
|
|
** Return the element following element "_e"
|
|
*/
|
|
#define JS_NEXT_LINK(_e) \
|
|
((_e)->next)
|
|
/*
|
|
** Return the element preceding element "_e"
|
|
*/
|
|
#define JS_PREV_LINK(_e) \
|
|
((_e)->prev)
|
|
|
|
/*
|
|
** Append an element "_e" to the end of the list "_l"
|
|
*/
|
|
#define JS_APPEND_LINK(_e,_l) JS_INSERT_BEFORE(_e,_l)
|
|
|
|
/*
|
|
** Insert an element "_e" at the head of the list "_l"
|
|
*/
|
|
#define JS_INSERT_LINK(_e,_l) JS_INSERT_AFTER(_e,_l)
|
|
|
|
/* Return the head/tail of the list */
|
|
#define JS_LIST_HEAD(_l) (_l)->next
|
|
#define JS_LIST_TAIL(_l) (_l)->prev
|
|
|
|
/*
|
|
** Remove the element "_e" from it's circular list.
|
|
*/
|
|
#define JS_REMOVE_LINK(_e) \
|
|
JS_BEGIN_MACRO \
|
|
(_e)->prev->next = (_e)->next; \
|
|
(_e)->next->prev = (_e)->prev; \
|
|
JS_END_MACRO
|
|
|
|
/*
|
|
** Remove the element "_e" from it's circular list. Also initializes the
|
|
** linkage.
|
|
*/
|
|
#define JS_REMOVE_AND_INIT_LINK(_e) \
|
|
JS_BEGIN_MACRO \
|
|
(_e)->prev->next = (_e)->next; \
|
|
(_e)->next->prev = (_e)->prev; \
|
|
(_e)->next = (_e); \
|
|
(_e)->prev = (_e); \
|
|
JS_END_MACRO
|
|
|
|
/*
|
|
** Return non-zero if the given circular list "_l" is empty, zero if the
|
|
** circular list is not empty
|
|
*/
|
|
#define JS_CLIST_IS_EMPTY(_l) \
|
|
((_l)->next == (_l))
|
|
|
|
/*
|
|
** Initialize a circular list
|
|
*/
|
|
#define JS_INIT_CLIST(_l) \
|
|
JS_BEGIN_MACRO \
|
|
(_l)->next = (_l); \
|
|
(_l)->prev = (_l); \
|
|
JS_END_MACRO
|
|
|
|
#define JS_INIT_STATIC_CLIST(_l) \
|
|
{(_l), (_l)}
|
|
|
|
#endif /* jsclist_h___ */
|