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Re: leaf environments vs eval environments?

From: Lars J. Aas
Subject: Re: leaf environments vs eval environments?
Date: Fri, 22 Jun 2001 15:34:11 +0200
User-agent: Mutt/1.2.5i

On Fri, Jun 22, 2001 at 02:23:47PM +0100, Neil Jerram wrote:
: >>>>> "Lars" == Lars J Aas <address@hidden> writes:
:     Lars> Forget about it - I was looking at some old docs (have to
:     Lars> fix the info search path soon), combined with not realizing
:     Lars> that the C functions and scheme hooks essentially are the
:     Lars> same...
: Also, environments.[ch], while part of libguile, is not actually used
: yet for what the module system and evaluator think of as environments.

Hmm, then I'll have to ask...

A C++ class contains a script string, and when it is going to be run I
want to create an environment where "this" is a smob for the current
class, and then evaluate the script in that environment.

I figured I would define "this" to the smob in a leaf environment, and
use that as the local part when creating an eval environment (haven't
figured out what to use as the import env yet - maybe the one returned
by scm_interaction_environment()?), and feed that env to the eval function.

If this doesn't work, what is the recommended method for doing what I'm
trying to do?  A static/global this-binding isn't an option - it must be
local to the evaluation.

  Lars J
"Imagine, the task force guy says, telling a passenger on arrival that a dildo
kept her baggage on the East Coast.  Sometimes, it's even a man.  It's airline
policy not to imply ownership in the event of a dildo.  Use the indefinite
article.  A dildo.  Never your dildo.  Never, ever say the dildo accidentally
turned itself on.  A dildo activated itself and created an emergency situation
that required evacuating your baggage."

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