Re: On-the-fly compilation and execution of C++ program

James Kanze <>
Wed, 4 Jun 2008 01:14:30 -0700 (PDT)
On Jun 3, 1:38 pm, Matthias Buelow <> wrote:

James Kanze wrote:

Lisp can execute XML? (I'll bet it couldn't 50 years ago.)


What I wanted to say is that the r=F4le that "executable XML" is
supposed to occupy is traditionally (and imho, much better)
filled in by a Lisp dialect of some sorts. They have a
head-start of almost 50 years on XML and Lisp S-expressions
are (imho) more readable than XML.

Yes, but Lisp isn't "in", and XML is. So obviously, a new
project can't use Lisp, and must use XML.

The idea, of course, being that instead of somehow trying some
awkward construct to turn XML into C++ and feed that to an
external compiler and then load the generated object file (or
somesuch), it might be more productive to use S-expressions
instead of XML, and embed a Lisp system in the (C++)

And XML probably maps easier into Lisp than into C++. (There is
a basic simimlarity of structure.) So you can still keep the
XML to show to the customer, and be in, and use a Lisp
interpreter to do the real work:-). (Most of the time I've had
to generate code automatically, it's been mainly tables, and
nested structures do map fairly easily into C++, although if the
structures are dynamic, you end up needing a lot of pointers.)

James Kanze (GABI Software)
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