protected function &migrate(&$source, $format)
{
switch ($format) {
case 'nodes':
return phpParser::toNodes($source);
case 'string':
return phpParser::toString($source);
case 'terminals':
return phpParser::toTerminals($source);
case 'tokens':
return phpParser::toTokens($source);
case 'tree':
return phpParser::toTree($source);
default:
return false;
}
}
