Open Radar

 
Summary:
Bridging swift to objective-c is very painful so far. The compiler is unforgiving about all types including integer types. For example if your obj-c function argument is declared as an (int) instead of an (NSInteger), you'll get a compile error that the function is just not found.

Example: I have this existing objective-c protocol declared in an objc PixelMapUI.h

@protocol DeleteKeyDelegate <NSTableViewDelegate>
- ( void ) deleteKeyPressed: ( NSTableView * ) view onRow: ( int ) rowIndex;
@end
And in my new swift class, I'm trying to do this:

extension NSTableView {

override func keyDown( event : NSEvent ) {
  var obj : NSTableViewDelegate = delegate()
  var obj2 = obj as? DeleteKeyDelegate;

  let characters : NSString = event.characters;
  var firstChar = Int(characters.characterAtIndex( 0 ));
  // if the user pressed delete and the delegate supports deleteKeyPressed
  if ( ( firstChar == NSDeleteFunctionKey ||
        firstChar == NSDeleteCharFunctionKey ||
        firstChar == NSDeleteCharacter) )
  {
     if let keyObj = obj as? DeleteKeyDelegate {
         keyObj.deleteKeyPressed( self, onRow: selectedRow() );
     }
  }
}

This produces a compiler error "Could not find member 'deleteKeyPressed'. After stumbling around, I finally changed my obj-c protocol from (int) to (NSInteger) and it started working. ** sigh ** if swift is going to be as unforgiving as f***ing Java, it's not going to be pretty code when every other line of code has a typecast integer.

Steps to Reproduce:
compile code listed above

Expected Results:
- a compile error that suggests a corrective action
- an llvm compiler flag to freely convert between all numeric types

Actual Results:
compiler error "Could not find member 'deleteKeyPressed'"

Version:
Version 6.0 (6A215l)

Notes:


Configuration:
Mac Pro late 2013 

Attachments: