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Ticket #308 (assigned defect)

Opened 11 years ago

Last modified 11 years ago

cobra internal error: unknown member exception

Reported by: kobi7 Owned by: Charles
Priority: major Milestone:
Component: Cobra Compiler Version: 0.8.0
Keywords: Cc:

Description

version:

The Cobra Programming Language svn:2844 (post 0.9) / 2012-11-14
on .NET CLR v4.0.30319 on Microsoft Windows NT 5.1.2600 Service Pack 3
at C:\Cobra\Cobra-svn-2844\bin\cobra.exe

the compilation error:

Error: error: COBRA INTERNAL ERROR / UnknownMemberException / obj=MethodSig-sh(6749, name=LimitReachedHandler, didStartBindInh=true, didBindInh=true, didStartBindInt=true, didBindInt=true, didStartBindImp=true, didBindImp=true, token=Token(SIG, 'sig', 'sig', ln 36, col 2, H:\projects\generic_project\ManageProfiling.cobra), didBindInh=true, isGeneric=false, isGenericDef=false, needsConstruction=false, genericDef=nil, baseClass=Class-mi(1031, name=MulticastDelegate, didStartBindInh=true, didBindInh=true, didStartBindInt=true, didBindInt=true, didBindImp=false, token=Token.empty, didBindInh=true, isGeneric=false, isGenericDef=false, needsConstruction=false, 1031), nativeType=nil, baseNode=LibraryTypeProxy-mi(6748, didBindInh=false, didBindInt=false, didBindImp=false), 6749), name='IsPublic', type=MethodSig
 (generic_project)

okay, the code that triggered it is perhaps kinda tricky.
I have a mixin with a shared (static) event.
(basically notifying when would be a good time to do a potentially heavy operation)
and the adding part, registers a listen with a method, in the 'cue init' part, if the right option flag is set.
the problem may come from the event signature, which is empty.

here's some code:

mixin ManageProfiling
	sig LimitReachedHandler
	event reachedLimit as LimitReachedHandler is shared

class Controller
	adds ManageProfiling

    cue init(view as IView, options as Options)
		base.init
		_opts = options
		.attachView(view)
		if Options.Profile in _opts
			listen ManageProfiling.reachedLimit, ref .doSaveState

	
	def doSaveState
		pass

Thanks for all the work!

Change History

Changed 11 years ago by kobi7

after rev. 2848
this code is almost fixed.

I only get something weird with regard to an event inside a mixin.

Error: "GenericProject?.Controller" does not implement interface member "GenericProject?.ManageProfiling?.ReachedLimit?" (generic_project)

ofcourse it's a mixin, and not an interface, and the member is "there by definition". as per the idea of a mixin.

or maybe I got something mixed up?

Changed 11 years ago by Charles

  • owner set to Charles
  • status changed from new to assigned

I was working on ticket:308 when I realized there was another problem that needed fixing, which is what changeset:2848 is all about.

I'm aware that 308 is still open and needs help.

Also, in the future, if the code you include with the ticket can be self-contained with no external references to other types, libs, etc. that is always the ideal.

Changed 11 years ago by Charles

Btw it would be nice if ticket summaries started with the language feature in question when appropriate. In this case:

mixins: cobra internal error: unknown member exception

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