Hi Gareth, On Nov 26, 2009, at 3:51 PM, Gareth Townsend wrote:
Hi,
I've just started playing with MacRuby. So please bear with me, there's every chance I'm doing something stupid :-) I'm using 0.5 beta 2.
I'm building a simple Cocoa App (http://github.com/quamen/noise) and am running into some problems while trying to set up a Preference Pane.
Specifically this error:
Assertion failed: (m != NULL), function rb_vm_super_lookup, file dispatcher.cpp, line 228.
Sorry about that, this shouldn't happen. I will try to reduce this and add it to our test suite.
Followed by a whole heap of warnings that seem to hard coded to Laurent's machine
Program received signal: “SIGABRT”.
sharedlibrary apply-load-rules all warning: Could not find object file "/Users/lrz/src/macruby-clean/ array.o" - no debug information available for "array.c".
warning: Could not find object file "/Users/lrz/src/macruby-clean/ bignum.o" - no debug information available for "bignum.c".
...
This occurs when I try to instantiate an NSWindowController subclass. My Code:
def open_preferences(sender) NSLog('open preferences') preference_controller ||= PreferencesController.new preference_controller.showWindow(self) end
class PreferencesController < NSWindowController def init if (super initWithWindowNibName('preferences')) self else nil end end
end
I have a .xib file called 'preferences.xib'
So can anyone spot something stupid? If not, how should I go about debugging this?
I guess you tried to translate [super initWithWindowNibName:@"preferences"] here. The problem is that super in Ruby doesn't work exactly the same as in Objective-C. super in Objective-C allows you to call any super method while in Ruby it will always call the super version of the caller (here, init). In your PreferencesController class, unless you overwrote initWithWindowNibName:, you can simply call it without super. class PreferencesController def init initWithWindowNibName('preferences') end end As John wrote earlier, init should always return self (or nil if there was an error). Here, initWithWindowNibName: is supposed to return self or nil in case of an error, so we can simply return its return value. Laurent