System.Text.RegularExpressions.Interpreter.CreateMark C# (CSharp) Method

		private int CreateMark (int previous) {
			if (mark_end == marks.Length) {
				Mark [] dest = new Mark [marks.Length * 2];
				marks.CopyTo (dest, 0);
				marks = dest;
			}

			int m = mark_end ++;
			marks [m].Start = marks [m].End = -1;
			marks [m].Previous = previous;

			return m;
		}