// what is exact? it seems to only add sets from above on stack
// if EOR is in set i. When it sees a set w/o EOR, it stops adding.
// Why would we ever want them all? Maybe no viable alt instead of
// mismatched token?
protected BitSet combineFollows(boolean exact) {
int top = state._fsp;
BitSet followSet = new BitSet();
for (int i = top; i >= 0; i--) {
BitSet localFollowSet = state.following[i];
/*
System.out.println("local follow depth "+i+"="+
localFollowSet.toString(getTokenNames())+")");
*/
followSet.orInPlace(localFollowSet);
if (exact) {
// can we see end of rule?
if (localFollowSet.member(Token.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(Token.EOR_TOKEN_TYPE);
}
} else { // can't see end of rule, quit
break;
}
}
}
return followSet;
}
protected BitSet combineFollows(boolean exact) {
int top = _fsp;
BitSet followSet = new BitSet();
for (int i = top; i >= 0; i--) {
BitSet localFollowSet = following[i];
/*
* System.out.println("local follow depth "+i+"="+
* localFollowSet.toString(getTokenNames())+")");
*/
followSet.orInPlace(localFollowSet);
if (exact && !localFollowSet.member(Token.EOR_TOKEN_TYPE)) {
break;
}
}
followSet.remove(Token.EOR_TOKEN_TYPE);
return followSet;
}
