SecureSqueak and packages
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Hi Michael,
A while ago you posted how you'd managed to bootstrap a Squeak image such that all the kernel-y stuff was namespaced/packaged and nothing depended on package-less classes in the image. Is there a chance we (I!) can have a look at what you've done? frank |
Re: SecureSqueak and packages
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Replying to an email from Frank that I realised the list would be
interested in too: On Tue, Apr 17, 2012 at 10:18 PM, Frank Shearar <[hidden email]> wrote: > On 17 April 2012 03:44, Michael van der Gulik <[hidden email]> wrote: >> On Mon, Apr 16, 2012 at 10:45 PM, Frank Shearar <[hidden email]> wrote: <snip - SecureSqueak description> >> What do you want to use it for? > > I've been doing a ton of reading on modules, in Newspeak and ML > mainly. There's been a bunch of talk recently in both the Squeak and > Pharo communities on reviving modularisation efforts. > > Mainly, I want to see if your work on packages can enable something > like Newspeak and ML, where you may have multiple versions of the same > package loaded in the same image, where packages don't have full > access to other package's bits (unless you explicitly enable said > access). In essence I'd like to carve up the flat, known-by-everything > global-state-ish namespace we currently have. That's a fairly accurate description of what I did, although I'm unfamiliar with Newspeak and ML. I have done the following, all of it less than alpha-quality code. All of this is code in their own Namespaces and they don't appear in the SystemDictionary: * Namespaces and Packages implemented and used. Namespace is a subclass of Dictionary (mapping Symbols -> Classes and other Namespaces), Package is a subclass of Namespace. * NamespaceBrowser implemented (based on an old buggy PlusTools browser), tools fixed up just enough to work with namespaces. * Kernel, Collections, Morphic, Graphics, Files and System converted to Packages. * OpalCompiler, AST, SUnit, PlusTools converted to Packages. OpalCompiler still needs to be used - currently I'm using the old Compiler with modifications for namespaces. * more stuff. The new Kernel package is partially used, coincident with the original classes. I made a new Metaclass / Class singularity and all of my other classes (usually) use these. Special objects such as true, false, SmallIntegers, BlockContext, etc etc still all need porting. I haven't uncompacted any classes yet either. I'm currently working on export and import of source code to files. I hope to abandon squeak.changes and Squeak*.sources, and instead store code in the image with regular exports to a directory structure for backup and version control. I looked at Monticello and abandoned trying to modify it in preference to exporting/importing code predictably enough to be able to use existing version control tools such as Subversion or Git. I'm separating source management from Class. My philosophy here is that source code is only for developers, and that the canonical source code lives as objects in an image. I haven't touched much of this code for ages. If there is interest, I could work towards another release. The latest versions only exist in images on my local machine; I've gone far beyond being able to use Monticello now. I can't work on it particularly quickly either; I only have time for one or two hours a week. Michael. -- http://gulik.pbwiki.com/ |
Re: SecureSqueak and packages
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On Wed, Apr 18, 2012 at 9:04 AM, Michael van der Gulik
<[hidden email]> wrote: > Replying to an email from Frank that I realised the list would be > interested in too: > > On Tue, Apr 17, 2012 at 10:18 PM, Frank Shearar <[hidden email]> wrote: >> On 17 April 2012 03:44, Michael van der Gulik <[hidden email]> wrote: >>> On Mon, Apr 16, 2012 at 10:45 PM, Frank Shearar <[hidden email]> wrote: > > <snip - SecureSqueak description> > >>> What do you want to use it for? >> >> I've been doing a ton of reading on modules, in Newspeak and ML >> mainly. There's been a bunch of talk recently in both the Squeak and >> Pharo communities on reviving modularisation efforts. >> >> Mainly, I want to see if your work on packages can enable something >> like Newspeak and ML, where you may have multiple versions of the same >> package loaded in the same image, where packages don't have full >> access to other package's bits (unless you explicitly enable said >> access). In essence I'd like to carve up the flat, known-by-everything >> global-state-ish namespace we currently have. > > That's a fairly accurate description of what I did, although I'm > unfamiliar with Newspeak and ML. I have done the following, all of it > less than alpha-quality code. All of this is code in their own > Namespaces and they don't appear in the SystemDictionary: <snip> Oh yea, I haven't implemented any form of public/protected/private classes or namespaces. That's pretty easy to do if you have some idea of what you want. More info is here: http://gulik.pbworks.com/SecureSqueak which is a part of: http://gulik.pbworks.com/Unnamed%20Grand%20Project Michael. -- http://gulik.pbwiki.com/ |
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