convert primitive

[pduti]

Hi,

While porting  Smalltalkcode to Newspeak (NSFuel) I have to port the following code (that was added by Fuel to ProtoObject):

largeIdentityHash

<primitive: 75>

self primitiveFailed

Anybody has an idea ?

[Gilad Bracha]

This is an example of a special syntax used in Smalltalk to invoke VM primitives. Primitives are a Smalltalkism that has been eradicated from Newspeak.  In Newspeak, you call VM primitives by sending messages to a VMMirror.

You can use the method primitveIdentityHash  declared in SqueakVMMirror`ObjectMirrorHelper

--
Cheers, Gilad

[Ryan Macnak]

In this case I would just replace sends of largeIdentityHash with identityHash, which is understood by all objects. Someday the object model in Cog will be replaced with one that has a larger hash field.

[Mariano Martinez Peck]

On Friday, November 9, 2012 7:36:20 PM UTC+1, Ryan Macnak wrote:

In this case I would just replace sends of largeIdentityHash with identityHash, which is understood by all objects. Someday the object model in Cog will be replaced with one that has a larger hash field.

Exactly. That was because of an optimized LargeHashedCollection specially to perform better for large sets and dictionaries since the identity hash in Cog is only a few bits (around 12 I think).

So for the moment you can use use #identityHash, or even simpler, use IdentityDictionary instead of LargeIdentityDictionary and IdentitySet instead of LargeIdentitySet. 

Cheers,