/**
* This constructor instantiates the class.
*
* @access public
* @param IO\File $file the file to be opened
* @throws Throwable\FileNotFound\Exception indicates the file could not be
* opened
* @throws Throwable\InvalidArgument\Exception indicates the file is not readable
*/
public function __construct(IO\File $file)
{
if (!$file->exists()) {
throw new Throwable\FileNotFound\Exception('Unable to open file :file.', array(':file' => $file));
}
if (!$file->isReadable()) {
throw new Throwable\InvalidArgument\Exception('Unable to read from file. File ":file" is not readable.', array(':file' => $file));
}
$this->file = $file;
$this->handle = null;
$this->open();
}
