Class EnumElementRule

base/src/main/java/net/time4j/PlainDate.java:3034–3199

    }

    private static class EnumElementRule<V extends Enum<V>>
        implements ElementRule<PlainDate, V> {

        //~ Instanzvariablen ----------------------------------------------

        private final String name;
        private final Class<V> type;
        private final V min;
        private final V max;
        private final int index;

        //~ Konstruktoren -------------------------------------------------

        EnumElementRule(
            String name,
            Class<V> type,
            V min,
            V max,
            int index
        ) {
            super();

            this.name = name;
            this.type = type;
            this.min = min;
            this.max = max;
            this.index = index;

        }

        //~ Methoden ------------------------------------------------------

        static <V extends Enum<V>> EnumElementRule<V> of(ChronoElement<V> element) {

            return new EnumElementRule<>(
                element.name(),
                element.getType(),
                element.getDefaultMinimum(),
                element.getDefaultMaximum(),
                ((EnumElement<?>) element).getIndex()
            );

        }

        @Override
        public V getValue(PlainDate context) {

            Object ret;

            switch (this.index) {
                case EnumElement.MONTH:
                    ret = Month.valueOf(context.month);
                    break;
                case EnumElement.DAY_OF_WEEK:
                    ret = context.getDayOfWeek();
                    break;
                case EnumElement.QUARTER_OF_YEAR:
                    ret = Quarter.valueOf(((context.month - 1) / 3) + 1);