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106 lines
3.5 KiB
106 lines
3.5 KiB
//
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// ACBtree.h
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// ST4
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//
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// Created by Alan Condit on 4/18/11.
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// Copyright 2011 Alan Condit. All rights reserved.
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//
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typedef enum {
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BTNODE,
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LEAF
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} NodeType;
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#import <Foundation/Foundation.h>
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@class AMutableDictionary;
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#define BTNODESIZE 11
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#define BTHNODESIZE ((BTNODESIZE-1)/2)
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#define BTKeySize 38
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#if defined FAILURE
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#undef FAILURE
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#endif
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#define FAILURE -1
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#if defined SUCCESS
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#undef SUCCESS
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#endif
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#define SUCCESS 0
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@interface ACBKey : NSObject {
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NSInteger recnum; /* record number */
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__strong NSString *key; /* key pointer id */
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char kstr[BTKeySize]; /* key entry */
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}
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@property (assign) NSInteger recnum;
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@property (retain) NSString *key;
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+ (ACBKey *)newKey;
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+ (ACBKey *)newKeyWithKStr:(NSString *)aKey;
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- (id) init;
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- (id) initWithKStr:(NSString *)aKey;
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- (void)dealloc;
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- (NSString *) description;
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@end
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@interface ACBTree : NSObject {
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__strong AMutableDictionary *dict; /* The dictionary that this node belongs to */
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__strong ACBTree *lnode; /* pointer to left node */
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__strong ACBTree *rnode; /* pointer to right node */
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__strong ACBKey **keys; /* pointer to keys */
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__strong ACBTree **btNodes; /* pointers to btNodes */
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__strong ACBKey *keyArray[BTNODESIZE];
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__strong ACBTree *btNodeArray[BTNODESIZE];
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NSInteger lnodeid; /* nodeid of left node */
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NSInteger rnodeid; /* nodeid of right node */
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NSInteger nodeid; /* node id */
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NSInteger nodeType; /* 1 = node, 2 = leaf, -1 = unused */
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NSInteger numkeys; /* number of active entries */
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NSInteger numrecs; /* number of records */
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NSInteger updtd; /* modified since update flag */
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NSInteger keylen; /* length of key */
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NSInteger kidx;
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}
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@property (retain) AMutableDictionary *dict;
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@property (retain) ACBTree *lnode;
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@property (retain) ACBTree *rnode;
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@property (assign) ACBKey **keys;
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@property (assign) ACBTree **btNodes;
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@property (assign) NSInteger lnodeid;
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@property (assign) NSInteger rnodeid;
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@property (assign) NSInteger nodeid;
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@property (assign) NSInteger nodeType;
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@property (assign) NSInteger numkeys;
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@property (assign) NSInteger numrecs;
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@property (assign) NSInteger updtd;
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@property (assign) NSInteger keylen;
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@property (assign) NSInteger kidx;
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+ (ACBTree *) newNodeWithDictionary:(AMutableDictionary *)theDict;
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- (id)initWithDictionary:(AMutableDictionary *)theDict;
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- (void)dealloc;
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- (ACBTree *)createnode:(ACBKey *)kp0;
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- (ACBTree *)deletekey:(NSString *)dkey;
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- (ACBTree *)insertkey:(ACBKey *)ikp value:(id)value;
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- (ACBKey *)internaldelete:(ACBKey *)dkp;
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- (ACBTree *) internalinsert:(ACBKey *)key value:(id)value split:(NSInteger *)h;
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- (ACBTree *) insert:(ACBKey *)key value:(id)value index:(NSInteger)hi split:(NSInteger *)h;
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- (NSInteger)delfrmnode:(ACBKey *)ikp;
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- (NSInteger)insinnode:(ACBKey *)key value:(id)value;
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- (void)mergenode:(NSInteger)i;
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- (ACBTree *)splitnode:(NSInteger)idx;
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- (ACBTree *)search:(id)key;
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- (NSInteger)searchnode:(id)key match:(BOOL)match;
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- (void)borrowleft:(NSInteger)i;
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- (void)borrowright:(NSInteger)i;
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- (void)rotateleft:(NSInteger)j;
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- (void)rotateright:(NSInteger)j;
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- (NSInteger) keyWalkLeaves;
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- (NSInteger) objectWalkLeaves;
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- (NSString *) description;
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@end
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