[Larceny-users] procedure introspection

[Felix Klock]

jao-

On Mar 13, 2009, at 5:35 PM, Jose A. Ortega Ruiz wrote:

> Sorry, i forgot a question in my previous response: is there a way to
> get the list of bound identifiers in a given environment/library? (i'd
> use that to provide symbol completion in Scheme buffers).

You can query for the environments provided by an environment object,  
such as the interaction environment.  (This is not the same thing as  
the lexical environment of a particular expression.)

The relevant procedure is environment-variables -- this functionality  
is the basis of the apropos library, which I've included a  
demonstration of below.

-Felix

Larceny v0.97a3 (alpha test) (Mar  4 2009 11:51:41, precise:Posix  
Unix:unified)
/home/pnkfelix/.larceny: adding lib/Experimental to require path
larceny.heap, built on Wed Mar  4 12:44:23 EST 2009

 > (require 'apropos)
#t

 > (apropos 'macro)
(environment-get-macro
   environment-macro?
   environment-macros
   environment-set-macro!
   macro-expand
   macro-expand-expression
   macro-expander)