public Parser literalValue() {
        if (literalValueParser == null) {
           FutureParser future = scoped("literalValue");
           literalValueParser = future;
           future.setParser(
               choice(
                   numericLiteral(),
                   alphanumericLiteral(),
                   figurativeConstant(),
                   bit()
               )
           );
        }

        return literalValueParser;
    }