Files
Nim/tests/generics/tptrinheritance.nim
2017-04-28 18:26:41 +03:00

21 lines
678 B
Nim

type NSPasteboardItem* = ptr object
type NSPasteboard* = ptr object
type NSArrayAbstract = ptr object {.inheritable.}
type NSMutableArrayAbstract = ptr object of NSArrayAbstract
type NSArray*[T] = ptr object of NSArrayAbstract
type NSMutableArray*[T] = ptr object of NSArray[T]
proc newMutableArrayAbstract*(): NSMutableArrayAbstract = discard
template newMutableArray*(T: typedesc): NSMutableArray[T] =
cast[NSMutableArray[T]](newMutableArrayAbstract())
proc writeObjects*(p: NSPasteboard, o: NSArray[NSPasteboardItem]) = discard
let a = newMutableArray NSPasteboardItem
var x: NSMutableArray[NSPasteboardItem]
var y: NSArray[NSPasteboardItem] = x
writeObjects(nil, a)