1 /*
2  *  Copyright (C) 2010  Regents of the University of Michigan
3  *
4  *   This program is free software: you can redistribute it and/or modify
5  *   it under the terms of the GNU General Public License as published by
6  *   the Free Software Foundation, either version 3 of the License, or
7  *   (at your option) any later version.
8  *
9  *   This program is distributed in the hope that it will be useful,
10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  *   GNU General Public License for more details.
13  *
14  *   You should have received a copy of the GNU General Public License
15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #include "LongLongCounter.h"
19 
LongCounter()20 LongCounter::LongCounter() : LongHash<int>()
21 {
22     SetAllowDuplicateKeys(false);
23 }
24 
IncrementCount(long long key)25 void LongCounter::IncrementCount(long long key)
26 {
27     unsigned int slot = Find(key);
28 
29     if (slot == LH_NOTFOUND)
30         Add(key, 1);
31     else if (Object(slot) == -1)
32         Delete(slot);
33     else
34         Object(slot)++;
35 }
36 
DecrementCount(long long key)37 void LongCounter::DecrementCount(long long key)
38 {
39     unsigned int slot = Find(key);
40 
41     if (slot == LH_NOTFOUND)
42         Add(key, -1);
43     else if (Object(slot) == 1)
44         Delete(slot);
45     else
46         Object(slot)--;
47 }
48 
GetCount(long long key)49 int LongCounter::GetCount(long long key)
50 {
51     unsigned int slot = Find(key);
52 
53     if (slot == LH_NOTFOUND)
54         return 0;
55     else
56         return Object(slot)--;
57 }
58 
59 
60