Re: [racket-users] Creating a language that extends typed/racket

2015-08-30 Thread Alexander D. Knauth 

 On Aug 30, 2015, at 6:31 PM, Alexis King lexi.lam...@gmail.com wrote:
 
 (Disclaimer: I think this question may have been visited before on this 
 mailing list, but I couldn’t find any resolution, so I’m going to ask again.)

Yes. What came out of it was this, which they got to work:
https://github.com/khinsen/racket-typed-lang

 I would like to write a language that extends typed/racket or 
 typed/racket/base. Specifically, I have a collection, called “envy”. I would 
 like to create a `#lang envy` that is just like #lang typed/racket/base, but 
 also includes (all-from-out envy). My first instinct was just to create a 
 language using syntax/module-reader, along with a simple module language:
 
   #lang typed/racket/base
   (require envy)
   (provide (all-from-out envy typed/racket/base))
 
 Unfortunately, this doesn’t work. The `envy` module defines a macro called 
 `define-environment`, but attempting to use it in this `#lang envy` fails:
 
   Type Checker: Macro define-environment from typed module used in untyped 
 code in: (define-environment)
 
 So that doesn’t work. For some reason, the typechecker thinks `#lang envy` is 
 untyped (though it seems to typecheck properly when not using macros). 
 However, I realized that `#lang typed/racket` is a module language that 
 obviously extends typed/racket/base. It uses typed-racket/minimal, but using 
 that instead of typed/racket/base didn’t alleviate my problem.
 
 Is it possible to create a custom language that extends typed/racket/base? 
 How does typed/racket itself do it?
 
 Alexis
 
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[racket-users] Creating a language that extends typed/racket

2015-08-30 Thread Alexis King 
(Disclaimer: I think this question may have been visited before on this mailing 
list, but I couldn’t find any resolution, so I’m going to ask again.)

I would like to write a language that extends typed/racket or 
typed/racket/base. Specifically, I have a collection, called “envy”. I would 
like to create a `#lang envy` that is just like #lang typed/racket/base, but 
also includes (all-from-out envy). My first instinct was just to create a 
language using syntax/module-reader, along with a simple module language:

   #lang typed/racket/base
   (require envy)
   (provide (all-from-out envy typed/racket/base))

Unfortunately, this doesn’t work. The `envy` module defines a macro called 
`define-environment`, but attempting to use it in this `#lang envy` fails:

   Type Checker: Macro define-environment from typed module used in untyped 
code in: (define-environment)

So that doesn’t work. For some reason, the typechecker thinks `#lang envy` is 
untyped (though it seems to typecheck properly when not using macros). However, 
I realized that `#lang typed/racket` is a module language that obviously 
extends typed/racket/base. It uses typed-racket/minimal, but using that instead 
of typed/racket/base didn’t alleviate my problem.

Is it possible to create a custom language that extends typed/racket/base? How 
does typed/racket itself do it?

Alexis

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