public function testUnionInPlace()
{
$set1 = new Set(array(1, 2, 3));
$set2 = new Set(array(2, 3, 4));
$set1->unionInPlace($set2);
$arr = array(1, 2, 3, 4);
foreach ($arr as $n) {
self::assertTrue($set1->member($n));
}
}
protected function combineFollows($exact)
{
$top = $this->state->_fsp;
$followSet = new Set(array());
for ($i = $top; $i >= 0; $i--) {
$localFollowSet = $this->state->following[$i];
/*
System.out.println("local follow depth "+i+"="+
localFollowSet.toString(getTokenNames())+")");
*/
$followSet->unionInPlace($localFollowSet);
if ($exact) {
// can we see end of rule?
if ($localFollowSet->member(TokenConst::$EOR_TOKEN_TYPE)) {
// Only leave EOR in set if at top (start rule); this lets
// us know if have to include follow(start rule); i.e., EOF
if ($i > 0) {
$followSet->remove(TokenConst::$EOR_TOKEN_TYPE);
}
} else {
// can't see end of rule, quit
break;
}
}
}
return $followSet;
}
