public ICLS_Expression Compiler_Expression_Loop_Return(IList <Token> tlist, ICLS_Environment content, int pos, int posend)
        {
            CLS_Expression_LoopReturn value = new CLS_Expression_LoopReturn(pos, posend, tlist[pos].line, tlist[posend].line);

            ICLS_Expression subvalue;
            bool            succ = Compiler_Expression(tlist, content, pos + 1, posend, out subvalue);

            if (succ)
            {
                value.listParam.Add(subvalue);
            }

            return(value);
        }
        public ICLS_Expression Compiler_Expression_Loop_Return(IList<Token> tlist, ICLS_Environment content, int pos, int posend)
        {
            CLS_Expression_LoopReturn value = new CLS_Expression_LoopReturn(pos, posend, tlist[pos].line, tlist[posend].line);

            ICLS_Expression subvalue;
            bool succ = Compiler_Expression(tlist, content, pos + 1, posend, out subvalue);
            if (succ)
            {
                value.listParam.Add(subvalue);
            }

            return value;
        }