Function wrapWithOid

postgres/parser/sem/tree/datum.go:2024–2044

wrapWithOid wraps a Datum with a custom Oid.

(d Datum, oid oid.Oid)

// wrapWithOid wraps a Datum with a custom Oid.
func wrapWithOid(d Datum, oid oid.Oid) Datum {
	switch v := d.(type) {
	case nil:
		return nil
	case *DInt:
	case *DString:
	case *DArray:
	case NullLiteral, *DOidWrapper:
		panic(errors.AssertionFailedf("cannot wrap %T with an Oid", v))
	default:
		// Currently only *DInt, *DString, *DArray are hooked up to work with
		// *DOidWrapper. To support another base Datum type, replace all type
		// assertions to that type with calls to functions like AsDInt and
		// MustBeDInt.
		panic(errors.AssertionFailedf("unsupported Datum type passed to wrapWithOid: %T", d))
	}
	return &DOidWrapper{
		Wrapped: d,
		Oid:     oid,
	}
}

// UnwrapDatum returns the base Datum type for a provided datum, stripping
// an *DOidWrapper if present. This is useful for cases like type switches,