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

        public virtual void Consume()
        {
            if (La(1) == IntStreamConstants.Eof)
            {
                throw new InvalidOperationException("cannot consume EOF");
            }
            // buf always has at least data[p==0] in this method due to ctor
            lastChar = data[p];
            // track last char for LA(-1)
            if (p == n - 1 && numMarkers == 0)
            {
                n = 0;
                p = -1;
                // p++ will leave this at 0
                lastCharBufferStart = lastChar;
            }
            p++;
            currentCharIndex++;
            Sync(1);
        }