Antlr4.Runtime.Atn.LexerATNSimulator.Match C# (CSharp) Метод

        public int Match(ICharStream input, int mode)
        {
            match_calls++;
            this.mode = mode;
            int mark = input.Mark();
            try
            {
                this.startIndex = input.Index;
                this.prevAccept.Reset();
                DFA dfa = decisionToDFA[mode];
                if (dfa.s0 == null)
                {
                    return MatchATN(input);
                }
                else
                {
                    return ExecATN(input, dfa.s0);
                }
            }
            finally
            {
                input.Release(mark);
            }
        }