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 import cppast.AstTranslationUnit;
33 import cpptools.FileObserver;
34
35 /**
36 * Implements a visitor for files.
37 *
38 * @author Mathieu Champlon
39 */
40 public final class FileVisitor extends AbstractVisitor implements FileObserver
41 {
42 private final Counter counter;
43 private String filename;
44
45 /**
46 * Create a function visitor.
47 *
48 * @param counter the counter to apply
49 */
50 public FileVisitor( final Counter counter )
51 {
52 if( counter == null )
53 throw new IllegalArgumentException( "argument 'counter' is null" );
54 this.counter = counter;
55 }
56
57 /**
58 * {@inheritDoc}
59 */
60 public Object visit( final AstTranslationUnit node, final Object data )
61 {
62 node.accept( counter, data );
63 counter.flush( filename, node.getFirstToken().beginLine );
64 return node.accept( this, data );
65 }
66
67 /**
68 * {@inheritDoc}
69 */
70 public void changed( final String filename )
71 {
72 this.filename = filename;
73 }
74 }