1 /**
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions are
4 * met :
5 *
6 * . Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 *
9 * . Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * . The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 package cppncss.counter;
30
31 import cppast.AbstractVisitor;
32
33 /**
34 * Factorizes counters common behaviours.
35 *
36 * @author Mathieu Champlon
37 */
38 public class AbstractCounter extends AbstractVisitor implements Counter
39 {
40 private final String label;
41 private final CounterObserver observer;
42 private int count;
43
44 /**
45 * Create an abstract counter.
46 *
47 * @param label the name of the measure
48 * @param observer a counter observer
49 */
50 public AbstractCounter( final String label, final CounterObserver observer )
51 {
52 if( observer == null )
53 throw new IllegalArgumentException( "argument 'observer' is null" );
54 this.label = label;
55 this.observer = observer;
56 this.count = 0;
57 }
58
59 /**
60 * {@inheritDoc}
61 */
62 public final void flush( final String item, final int line )
63 {
64 observer.notify( label, item, line, count );
65 count = 0;
66 }
67
68 /**
69 * Increments the counter.
70 */
71 protected final void increment()
72 {
73 ++count;
74 }
75 }