Antlr.Runtime.BufferedTokenStream.LT C# (CSharp) Method

        public virtual IToken LT(int k)
        {
            if (_p == -1)
                Setup();
            if (k == 0)
                return null;
            if (k < 0)
                return LB(-k);

            int i = _p + k - 1;
            Sync(i);
            if (i >= _tokens.Count)
            {
                // EOF must be last token
                return _tokens[_tokens.Count - 1];
            }

            if (i > Range)
                Range = i;

            return _tokens[_p + k - 1];
        }

        public void Test2ndToken()
        {
            Grammar g = new Grammar(
                "lexer grammar t;\n" +
                "ID : 'a'..'z'+;\n" +
                "INT : '0'..'9'+;\n" +
                "SEMI : ';';\n" +
                "ASSIGN : '=';\n" +
                "PLUS : '+';\n" +
                "MULT : '*';\n" +
                "WS : ' '+;\n");
            // Tokens: 012345678901234567
            // Input:  x = 3 * 0 + 2 * 0;
            ICharStream input = new ANTLRStringStream("x = 3 * 0 + 2 * 0;");
            Interpreter lexEngine = new Interpreter(g, input);
            BufferedTokenStream tokens = new BufferedTokenStream(lexEngine);

            string result = tokens.LT(2).Text;
            string expecting = " ";
            Assert.AreEqual(expecting, result);
        }