System.Text.RegularExpressions.RegexCompiler.GenerateMiddleSection C# (CSharp) Method

        internal void GenerateMiddleSection() {
            Label l1 = DefineLabel();
            Label[] table;
            int i;

            // Backtrack switch
            MarkLabel(_backtrack);

            // first call EnsureStorage 
            Mvlocfld(_trackposV, _trackposF);
            Mvlocfld(_stackposV, _stackposF);
            Ldthis();
            Callvirt(_ensurestorageM);
            Mvfldloc(_trackposF, _trackposV);
            Mvfldloc(_stackposF, _stackposV);
            Mvfldloc(_trackF, _trackV);
            Mvfldloc(_stackF, _stackV);


            PopTrack();

            table = new Label[_notecount];
            for (i = 0; i < _notecount; i++)
                table[i] = _notes[i]._label;

            _ilg.Emit(OpCodes.Switch, table);

        }