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+/* ***** 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 the Netscape security libraries.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1994-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either 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 __JAR_DS_h_
+#define __JAR_DS_h_
+
+/* Typedefs */
+typedef struct ZZLinkStr ZZLink;
+typedef struct ZZListStr ZZList;
+
+/*
+** Circular linked list. Each link contains a pointer to the object that
+** is actually in the list.
+*/
+struct ZZLinkStr {
+ ZZLink *next;
+ ZZLink *prev;
+ JAR_Item *thing;
+};
+
+struct ZZListStr {
+ ZZLink link;
+};
+
+#define ZZ_InitList(lst) \
+{ \
+ (lst)->link.next = &(lst)->link; \
+ (lst)->link.prev = &(lst)->link; \
+ (lst)->link.thing = 0; \
+}
+
+#define ZZ_ListEmpty(lst) ((lst)->link.next == &(lst)->link)
+
+#define ZZ_ListHead(lst) ((lst)->link.next)
+
+#define ZZ_ListTail(lst) ((lst)->link.prev)
+
+#define ZZ_ListIterDone(lst,lnk) ((lnk) == &(lst)->link)
+
+#define ZZ_AppendLink(lst,lnk) \
+{ \
+ (lnk)->next = &(lst)->link; \
+ (lnk)->prev = (lst)->link.prev; \
+ (lst)->link.prev->next = (lnk); \
+ (lst)->link.prev = (lnk); \
+}
+
+#define ZZ_InsertLink(lst,lnk) \
+{ \
+ (lnk)->next = (lst)->link.next; \
+ (lnk)->prev = &(lst)->link; \
+ (lst)->link.next->prev = (lnk); \
+ (lst)->link.next = (lnk); \
+}
+
+#define ZZ_RemoveLink(lnk) \
+{ \
+ (lnk)->next->prev = (lnk)->prev; \
+ (lnk)->prev->next = (lnk)->next; \
+ (lnk)->next = 0; \
+ (lnk)->prev = 0; \
+}
+
+extern ZZLink *
+ZZ_NewLink(JAR_Item *thing);
+
+extern void
+ZZ_DestroyLink(ZZLink *link);
+
+extern ZZList *
+ZZ_NewList(void);
+
+extern void
+ZZ_DestroyList(ZZList *list);
+
+
+#endif /* __JAR_DS_h_ */