System.Text.RegularExpressions.RegexRunner.DoubleCrawl C# (CSharp) Method

        protected void DoubleCrawl()
        {
            int[] newcrawl;

            newcrawl = new int[runcrawl.Length * 2];

            Array.Copy(runcrawl, 0, newcrawl, runcrawl.Length, runcrawl.Length);
            runcrawlpos += runcrawl.Length;
            runcrawl = newcrawl;
        }