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1 office 1 /**
2 * @file CHash_decl.h
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29  
30 #include "CHash_header.h"
31  
32 typedef struct {
33 CHashLink *buckets;
34 size_t num_buckets;
35 } CHash;
36  
37 typedef struct {
38 CHashEntry *ptr;
39 CHashLink link;
40 } CHashRef;
41  
42 static CHashLink CHashNullLink (void);
43 static CHashRef CHashNullRef (void);
44 static int CHashIsNullLink (CHashLink link);
45 static int CHashIsNullRef (CHashRef ref);
46 static CHashRef CHashDerefMayNull (CHashArg arg, CHashLink link);
47 static CHashRef CHashDerefNonNull (CHashArg arg, CHashLink link);
48  
49 static int CHash_Init (CHash *o, size_t num_buckets);
50 static void CHash_Free (CHash *o);
51 static int CHash_Insert (CHash *o, CHashArg arg, CHashRef entry, CHashRef *out_existing);
52 static void CHash_InsertMulti (CHash *o, CHashArg arg, CHashRef entry);
53 static void CHash_Remove (CHash *o, CHashArg arg, CHashRef entry);
54 static CHashRef CHash_Lookup (const CHash *o, CHashArg arg, CHashKey key);
55 static CHashRef CHash_GetNextEqual (const CHash *o, CHashArg arg, CHashRef entry);
56 static int CHash_MultiplyBuckets (CHash *o, CHashArg arg, int exp);
57 static void CHash_Verify (const CHash *o, CHashArg arg);
58  
59 #include "CHash_footer.h"