Method reverse

output/java8/1.4.15/Interpreter.java:1058–1068

Return a list with the same elements as v but in reverse order. Note that null values are not stripped out; use reverse(strip(v)) to do that.

(InstanceScope scope, Object v)

     */

    public Object reverse(InstanceScope scope, Object v) {
        if ( v==null ) return null;
        v = convertAnythingIteratableToIterator(scope, v);
        if ( v instanceof Iterator ) {
            List<Object> a = new LinkedList<Object>();
            Iterator<?> it = (Iterator<?>)v;
            while ( it.hasNext() ) a.add(0, it.next());
            return a;
        }
        return v;
    }

    /**
     * Return the length of a multi-valued attribute or 1 if it is a single