Antlr.Runtime.BaseRecognizer.CombineFollows C# (CSharp) Method

        protected virtual BitSet CombineFollows(bool exact)
        {
            int top = state._fsp;
            BitSet followSet = new BitSet();
            for ( int i = top; i >= 0; i-- )
            {
                BitSet localFollowSet = (BitSet)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( TokenTypes.EndOfRule ) )
                    {
                        // 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( TokenTypes.EndOfRule );
                        }
                    }
                    else
                    { // can't see end of rule, quit
                        break;
                    }
                }
            }
            return followSet;
        }