/**
* Skips a chain like \My\Object or My\Object
*
* @return bool, whether or not a ns chain could have been found at the current tai position.
* In case of a successful match, the cursor position is AFTER the last token
* of the ns chain.
*
*/
public static function skipNsChain(TokenArrayIteratorInterface $tai)
{
$ret = false;
if (false !== ($startKey = $tai->key())) {
$lastIsString = false;
$cur = $tai->current();
// possibly starting with backslash
if (true === TokenTool::match(T_NS_SEPARATOR, $cur)) {
$tai->next();
$cur = $tai->current();
}
// containing x repetitions of string backslash sequences
while (true === TokenTool::match(T_STRING, $cur)) {
$lastIsString = true;
$tai->next();
$cur = $tai->current();
if (true === TokenTool::match(T_NS_SEPARATOR, $cur)) {
$tai->next();
$cur = $tai->current();
$lastIsString = false;
}
}
if (true === $lastIsString) {
$ret = true;
} else {
$tai->seek($startKey);
}
}
return $ret;
}
