System.Text.RegularExpressions.RegexParser.ScanReplacement C# (CSharp) Method

        internal RegexNode ScanReplacement()
        {
            int c;
            int startpos;

            _concatenation = new RegexNode(RegexNode.Concatenate, _options);

            for (; ;)
            {
                c = CharsRight();
                if (c == 0)
                    break;

                startpos = Textpos();

                while (c > 0 && RightChar() != '$')
                {
                    MoveRight();
                    c--;
                }

                AddConcatenate(startpos, Textpos() - startpos, true);

                if (c > 0)
                {
                    if (MoveRightGetChar() == '$')
                        AddUnitNode(ScanDollar());
                    AddConcatenate();
                }
            }

            return _concatenation;
        }

        /*
         * This static call constructs a flat concatenation node given
         * a replacement pattern.
         */
        internal static RegexReplacement ParseReplacement(String rep, Hashtable caps, int capsize, Hashtable capnames, RegexOptions op)
        {
            RegexParser p;
            RegexNode root;

            p = new RegexParser((op & RegexOptions.CultureInvariant) != 0 ? CultureInfo.InvariantCulture : CultureInfo.CurrentCulture);

            p._options = op;

            p.NoteCaptures(caps, capsize, capnames);
            p.SetPattern(rep);
            root = p.ScanReplacement();

            return new RegexReplacement(rep, root, caps);
        }