[erlang-questions] JavaScript compiler for Erlang

[Marc van Woerkom]

Am Mon, 16 Jul 2007 10:35:49 +0200 hat
"Joe Armstrong" <erlang@REDACTED> geschrieben:
> I have on occasion thought that it would be fun to 
>implement Javascript.

You should be aware of

   http://lambda-the-ultimate.org/node/1784
   Specifying ECMAScript via ML

(Sorry, if somebody posted this already)

Regards,
Marc

> 
> The idea of having lot's of little javascripts running 
>in process and
> message parsing
> would be fun.
> 
> The first step would be a simple interpretor - from that 
>the compiler
> is easy :-)
> 
> The difficulty of wring an interpretor seems mainly to 
>do with getting
> an accurate
> parse tree of the js source into Erlang - the 
>interpretor should be pretty easy.
> 
> So now I wonder "how can I get a parse tree of some 
>javascript" - Ideally
> there would be a javascript-parser-in-javascript that 
>produced a JSON
> parse tree.
> 
> If such a parser exists please tell me where to find it 
>!!
> 
>Failing this I guess the easiest approach is to take 
>spidermonkey make
> the stand-alone
> version and fix the parser to dump the parse tree in 
>some suitable
> format. Unfortunately
> I suspect that spidermonkey make C data structures 
>suitable for
> compiling/interpreting
> rather than parse trees as such.
> 
> The next alternative would be to find a yacc grammar for 
>javascript
> and put this into yecc
> but I suspect this would be out-of-sync with real 
>javascript.
> 
>Failing that it's back to the ECMA-262 spec ( I suppose) 
>and try to convert the
> grammar in the appendices to something sensible.
> 
> In projects like this I always think that writing an 
>accurate parser
> is the tricky bit.
> 
> /Joe
> 
> 
> 
> 
> On 7/14/07, Joel Reymont <joelr1@REDACTED> wrote:
>> This is the reason I asked.
>>
>> Think scalable web development for the masses.
>>
>> In Javascript.
>>
>> On top of Erlang.
>>
>> On Jul 13, 2007, at 8:11 PM, denis wrote:
>>
>> > We are building an infrastructure allowing giving some 
>>services to our
>> > users. But external developers (same company, but 
>>other teams)
>> > could build
>> > their own custom services inside the infrastructure. 
>>Having these
>> > new users
>> > to learn a new language to build a custom services 
>>(which can be quite
>> > simple) can be badly perceived.
>>
>> --
>> http://topdog.cc      - EasyLanguage to C# compiler
>> http://wagerlabs.com  - Blog
>>
>>
>>
>>
>>
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