[Cuis] [OT] AjTalk

[Angel Java Lopez]

Hi people!

Hirzel, thanks for visit my project. Ok, it's OT, but I hope you find this
topic interesting.

Yes, it uses bytecodes, but Smalltalk compiled to JavaScript too. By now,
the project doesn't compile .st to JavaScript by itself, instead, it relies
on another project:

https://github.com/ajlopez/AjTalk

written in C#, that has a project that compiles .st to .js. I have all the
parts to compile to another dynamic languages, but now I'm working on the
C# VM.

This other project is a VM, too. It has Dictionary, Array, etc..
implemented using base .NET classes. There are many samples, i.e., a web
server. It has enviroments and modules (WIP). And recently, it has
processes with the capability of stop and resume (to be tested). That's why
I have bytecodes: to make the implementation of suspending a process, more
managable. I presented this project at Smalltalks 2010, Argentina. It has
remote objects, and something like Software Transactional Objects.  I hope
to present distributed objects, STM a la GemStone, for Smalltalks 2013.

In the JavaScript project https://github.com/ajlopez/AjTalkJs, both models:
bytecode, and compile JavaScript are supported. I presented it at
Smalltalks 2011. I'm still researching my options.

There is another VM in Java https://github.com/ajlopez/AjTalkJava, but it's
more WIP.

The idea I want to implement (and I have some parts in place) in the C#
project, it's not to have a minimal image, but an image that can be managed
from other. My VM can manage MORE than one image at memory, and one image
can be managed from another. Then, you can have image A, with all the
methods (compile: etc) and classes), and the image B, that you manage from
image A, in a growing way: it was born "small", and then it grows. So my VM
can manage more than one image, no need to manage a image from a remote VM
or other solutions, or to remove unneeded classes. The baby grows ;-)

My posts
http://ajlopez.wordpress.com/category/ajtalk/
A minimal hello world, with an image < 300 bytes, the last time I tried it
http://ajlopez.wordpress.com/2012/12/12/ajtalk-in-c-1-a-minimal-hello-world-image/

Angel "Java" Lopez
@ajlopez
github:ajlopez

On Sat, Jan 5, 2013 at 10:28 AM, H. Hirzel <hannes.hirzel at gmail.com> wrote:

> Hello Angel
>
> Thank you for your interesting comments about using github for
> HelpPages. I'd like Juan et. al. to answer first about the help issue
> and write here about something which caught my interest:
>
>     AjTalk
>
>
> On 1/5/13, Angel Java Lopez <ajlopez2000 at gmail.com> wrote:
> ...
> > I put simple online demo of my AjTalkJs (Smalltalk in JavaScript) in the
> > gh-page branch of:
> > https://github.com/ajlopez/AjTalkJs
> > it was published as
> > http://ajlopez.github.com/AjTalkJs/
> >
> > As another branches, it can received pull request for improvements.
> >
>
> I quickly had a look at your AjTalk pages.
>
> For example I find your ClientCanvas class
>
>
> https://github.com/ajlopez/AjTalkJs/blob/master/examples/client/canvas/ClientCanvas.st
>
>
> Then I found the class library here
> https://github.com/ajlopez/AjTalkJs/blob/master/lib/ajtalk.js
> (1700 lines of code)
>
> It contains the class definitions for
>
> * Number
> * MetaClass
> * Protoklass
> * ProtoObject
> * Nil
> * Block
> * ExecutionBlock  (contains a big case statement for byte code
> interpretation and stack operation)
> * Compiler
> * ChunkReader
>
>
>
> And you write that it gets compiled to a ByteCode
>
> which you give as
>
>         var ByteCodes = {
> GetValue: 0,
> GetArgument: 1,
> GetLocal: 2,
> GetInstanceVariable: 3,
> GetGlobalVariable: 4,
> GetSelf: 5,
> GetNull: 6,
> GetBlock: 7,
>
> SetLocal: 10,
> SetInstanceVariable: 11,
> SetGlobalVariable: 12,
>
> Add: 20,
> Subtract: 21,
> Multiply: 22,
> Divide: 23,
> Concatenate: 24,
>
> Primitive: 30,
> NativePrimitive: 31,
> LastTarget: 32,
>
> SendMessage: 40,
> NewList: 41,
> Return: 50,
>
> // Javascript bytecodes
>
> NativeAt: 100,
> NativeAtPut: 101,
> NativeApply: 102,
> NativeNew: 103
> };
>
> Are there more classes like Dictionary, Array, OrderedCollection,
> String and Stream?
>
> Are you aware of https://github.com/ympbyc/LittleSmallscript . It
> compiles directly to JavaScript without the need for ByteCode and a
> VM?
>
> Thank you for sharing this interesting project. I think with some more
> documentation it is an interesting learning experience and playfield.
>
> And maybe you can use Cuis in some way in connection with AjTalk :-)
>
> Kind regards
> Hannes
>
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