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/*
* bltList.h --
*
* Copyright 1993-1998 Lucent Technologies, Inc.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that the above copyright notice appear in all
* copies and that both that the copyright notice and warranty
* disclaimer appear in supporting documentation, and that the names
* of Lucent Technologies any of their entities not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission.
*
* Lucent Technologies disclaims all warranties with regard to this
* software, including all implied warranties of merchantability and
* fitness. In no event shall Lucent Technologies be liable for any
* special, indirect or consequential damages or any damages
* whatsoever resulting from loss of use, data or profits, whether in
* an action of contract, negligence or other tortuous action, arising
* out of or in connection with the use or performance of this
* software.
*/
#ifndef _BLT_LIST_H
#define _BLT_LIST_H
typedef struct Blt_ListStruct *Blt_List;
typedef struct Blt_ListNodeStruct *Blt_ListNode;
/*
* A Blt_ListNode is the container structure for the Blt_List.
*/
struct Blt_ListNodeStruct {
struct Blt_ListNodeStruct *prevPtr; /* Link to the previous node */
struct Blt_ListNodeStruct *nextPtr; /* Link to the next node */
ClientData clientData; /* Pointer to the data object */
struct Blt_ListStruct *listPtr; /* List to eventually insert node */
union { /* Key has one of these forms: */
char *oneWordValue; /* One-word value for key. */
int *words[1]; /* Multiple integer words for key.
* The actual size will be as large
* as necessary for this table's
* keys. */
char string[4]; /* String for key. The actual size
* will be as large as needed to hold
* the key. */
} key; /* MUST BE LAST FIELD IN RECORD!! */
};
typedef int (Blt_ListCompareProc) _ANSI_ARGS_((Blt_ListNode *node1Ptr,
Blt_ListNode *node2Ptr));
/*
* A Blt_List is a doubly chained list structure.
*/
struct Blt_ListStruct {
struct Blt_ListNodeStruct *headPtr; /* Pointer to first element in list */
struct Blt_ListNodeStruct *tailPtr; /* Pointer to last element in list */
int nNodes; /* Number of node currently in the list. */
int type; /* Type of keys in list. */
};
EXTERN void Blt_ListInit _ANSI_ARGS_((Blt_List list, int type));
EXTERN void Blt_ListReset _ANSI_ARGS_((Blt_List list));
EXTERN Blt_List Blt_ListCreate _ANSI_ARGS_((int type));
EXTERN void Blt_ListDestroy _ANSI_ARGS_((Blt_List list));
EXTERN Blt_ListNode Blt_ListCreateNode _ANSI_ARGS_((Blt_List list, char *key));
EXTERN void Blt_ListDeleteNode _ANSI_ARGS_((Blt_ListNode node));
EXTERN Blt_ListNode Blt_ListAppend _ANSI_ARGS_((Blt_List list, char *key,
ClientData clientData));
EXTERN Blt_ListNode Blt_ListPrepend _ANSI_ARGS_((Blt_List list, char *key,
ClientData clientData));
EXTERN void Blt_ListLinkAfter _ANSI_ARGS_((Blt_List list, Blt_ListNode node,
Blt_ListNode afterNode));
EXTERN void Blt_ListLinkBefore _ANSI_ARGS_((Blt_List list, Blt_ListNode node,
Blt_ListNode beforeNode));
EXTERN void Blt_ListUnlinkNode _ANSI_ARGS_((Blt_ListNode node));
EXTERN Blt_ListNode Blt_ListGetNode _ANSI_ARGS_((Blt_List list, char *key));
EXTERN void Blt_ListDeleteNodeByKey _ANSI_ARGS_((Blt_List list, char *key));
EXTERN Blt_ListNode Blt_ListGetNthNode _ANSI_ARGS_((Blt_List list,
int position, int direction));
EXTERN void Blt_ListSort _ANSI_ARGS_((Blt_List list,
Blt_ListCompareProc * proc));
#define Blt_ListGetLength(list) \
(((list) == NULL) ? 0 : ((struct Blt_ListStruct *)list)->nNodes)
#define Blt_ListFirstNode(list) \
(((list) == NULL) ? NULL : ((struct Blt_ListStruct *)list)->headPtr)
#define Blt_ListLastNode(list) \
(((list) == NULL) ? NULL : ((struct Blt_ListStruct *)list)->tailPtr)
#define Blt_ListPrevNode(node) ((node)->prevPtr)
#define Blt_ListNextNode(node) ((node)->nextPtr)
#define Blt_ListGetKey(node) \
(((node)->listPtr->type == TCL_STRING_KEYS) \
? (node)->key.string : (node)->key.oneWordValue)
#define Blt_ListGetValue(node) ((node)->clientData)
#define Blt_ListSetValue(node, value) \
((node)->clientData = (ClientData)(value))
#define Blt_ListAppendNode(list, node) \
(Blt_ListLinkBefore((list), (node), (Blt_ListNode)NULL))
#define Blt_ListPrependNode(list, node) \
(Blt_ListLinkAfter((list), (node), (Blt_ListNode)NULL))
#endif /* _BLT_LIST_H */
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