[racket] Creating my own series of teaching languages

You will need to implement a class that satisfies the interface. The methods are specified here: 

 http://docs.racket-lang.org/tools/drracket_language.html?q=sgn#%28def._%28%28lib._drracket%2Ftool-lib..rkt%29._drracket~3alanguage~3alanguage~3c~25~3e%29%29

(see all the indented specs). For some of them, it's probably okay to give no-action implementations. 

[[ I am not the author of any of these docs; I am working through them with you, on the list. ]]








On Jun 4, 2014, at 9:47 PM, Daniel Brady wrote:

> After re-reading that section more closely, I realize that I understand what it's saying; the part that I'm unsure about is how to actually go about implementing the drracket:language:language<%> interface. It would be nice if a small example was shown (like the examples shown when implementing a reader language). I am also unsure of where this implementation should go in my language directory: should it be in its own file? in the same file as the language module? The documentation suggests that I might be interested in the predefined simple implementation of the interface, drracket:language:simple-module-based-language%, and I think that is what I am looking for, but again there is the question of where I should be using this in my language implementation.
> 
> 
> On Wed, Jun 4, 2014 at 9:37 PM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
> 
> On Jun 4, 2014, at 9:26 PM, Daniel Brady wrote:
> 
>> Hi all,
>> I've decided to undertake the project of creating a small language, and then model the HtDP teaching languages by creating a hierarchical series of versions of that language. My current approach is to just make each of them a #lang language, but grouped together in a collection, and that's working out fine. But I would like to see if I can do it in a similar way to the HtDP languages, such that the user chooses the language from a group in the Choose Language menu, and doesn't use #lang syntax.
>> 
>> (I'm already asking about how to add a group of languages to that menu in a different thread.)
>> 
>> So I guess the question boils down to: How can I take a group of #lang languages and convert them to the teaching-language 'style', if you will?
>> ~Daniel.
>> 
>> -- 
>> SEE YOU SPACE COWBOY...
>> ____________________
>>  Racket Users list:
>>  http://lists.racket-lang.org/users
> 
> 
> So you read 
> 
>  http://docs.racket-lang.org/tools/adding-languages.html?q=drracket%20language%20menu#%28part._.Adding_.Arbitrary_.Languages_to_.Dr.Racket%29
> 
> Can you explain where you get stuck and (if possible) why you're stuck there? This would help us improve the docs and we can answer your question(s). I think it is safe to conflate the two threads here. 
> 
> -- Matthias
> 
> (p.s. I have done this language-menu thing only once, for The Little Lisper languages, but never released it.) 
> 
> 
> 
> -- 
> SEE YOU SPACE COWBOY...

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