Antlr4.Runtime.UnbufferedTokenStream.Consume C# (CSharp) Method

        public virtual void Consume()
        {
            if (LA(1) == TokenConstants.EOF)
            {
                throw new InvalidOperationException("cannot consume EOF");
            }
            // buf always has at least tokens[p==0] in this method due to ctor
            lastToken = tokens[p];
            // track last token for LT(-1)
            // if we're at last token and no markers, opportunity to flush buffer
            if (p == n - 1 && numMarkers == 0)
            {
                n = 0;
                p = -1;
                // p++ will leave this at 0
                lastTokenBufferStart = lastToken;
            }
            p++;
            currentTokenIndex++;
            Sync(1);
        }