AbstractFileSet::getDirectoryScanner PHP Method

    function getDirectoryScanner(Project $p)
    {
        if ($this->isReference()) {
            $o = $this->getRef($p);
            return $o->getDirectoryScanner($p);
        }
        if ($this->dir === null) {
            throw new BuildException("No directory specified for fileset.");
        }
        if (!$this->dir->exists()) {
            throw new BuildException("Directory " . $this->dir->getAbsolutePath() . " not found.");
        }
        if (!$this->dir->isDirectory()) {
            throw new BuildException($this->dir->getAbsolutePath() . " is not a directory.");
        }
        $ds = new DirectoryScanner();
        $this->setupDirectoryScanner($ds, $p);
        $ds->scan();
        return $ds;
    }