--
-- anycompatible / anycompatiblearray polymorphic pseudo-types (PostgreSQL
-- 13+).  On PostgreSQL 11 and 12 the types do not exist; the alternate
-- expected file anycompat_1.out matches that case.
--
CREATE FUNCTION ac_identity(anycompatible) RETURNS anycompatible LANGUAGE plruby AS $$
    args[0]
$$;
SELECT ac_identity(42);
SELECT ac_identity('hello'::text);
SELECT ac_identity(3.5::float8);

-- anycompatible unifies its arguments to a common type before the call.
CREATE FUNCTION ac_max2(anycompatible, anycompatible) RETURNS anycompatible LANGUAGE plruby AS $$
    a, b = args
    a >= b ? a : b
$$;
SELECT ac_max2(3, 7);
SELECT ac_max2(2.5::float8, 1);

-- anycompatiblearray: the array arrives as a Ruby Array and returns unchanged.
CREATE FUNCTION ac_arr(anycompatiblearray) RETURNS anycompatiblearray LANGUAGE plruby AS $$
    args[0]
$$;
SELECT ac_arr(ARRAY[1, 2, 3]);
SELECT ac_arr(ARRAY['a', 'b']::text[]);

DROP FUNCTION ac_identity(anycompatible);
DROP FUNCTION ac_max2(anycompatible, anycompatible);
DROP FUNCTION ac_arr(anycompatiblearray);