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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  }