From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: The wonders of partial evaluation Date: Fri, 09 Sep 2011 10:38:57 +0200 Message-ID: <87wrdijeji.fsf@gnu.org> References: <87fwk6zmvq.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: dough.gmane.org 1315557561 869 80.91.229.12 (9 Sep 2011 08:39:21 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 9 Sep 2011 08:39:21 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Fri Sep 09 10:39:17 2011 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1R1wcG-0004pa-U5 for guile-devel@m.gmane.org; Fri, 09 Sep 2011 10:39:17 +0200 Original-Received: from localhost ([::1]:49083 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R1wcG-0007HY-HQ for guile-devel@m.gmane.org; Fri, 09 Sep 2011 04:39:16 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:50067) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R1wcD-0007HT-Bu for guile-devel@gnu.org; Fri, 09 Sep 2011 04:39:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R1wcC-0006RH-F7 for guile-devel@gnu.org; Fri, 09 Sep 2011 04:39:13 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:40423) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R1wcC-0006RD-9k for guile-devel@gnu.org; Fri, 09 Sep 2011 04:39:12 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1R1wc9-0004nD-Rg for guile-devel@gnu.org; Fri, 09 Sep 2011 10:39:09 +0200 Original-Received: from 193.50.110.167 ([193.50.110.167]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 09 Sep 2011 10:39:09 +0200 Original-Received: from ludo by 193.50.110.167 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 09 Sep 2011 10:39:09 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 24 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 193.50.110.167 X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 23 Fructidor an 219 de la =?iso-8859-1?Q?R=E9volutio?= =?iso-8859-1?Q?n?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:k2fFWUEBduCQFal+njDPIqN9PiU= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 80.91.229.12 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:12751 Archived-At: Hi Noah! Noah Lavine skribis: > An interesting note from my current project: a partial evaluator means > you don't have to use macros to define the PEG parser (while keeping > exactly the same efficiency as now): instead of having (define-peg > pattern) be a macro that analyzes pattern and outputs code, you have, > (interpret-peg pattern string) be a program that parses string with > peg. Then to generate code, you just partially apply interpret-peg to > pattern, leaving string undetermined. (I'm not sure if the partial > evaluator currently does this, but it would be an interesting > approach.) I’m not sure if it does what you want, but you’re welcome to try and report back—best way to test is to run: (peval (compile exp #:to 'tree-il)) Next step will be to have peval consider local module-private bindings, which should have more visible effects. Thanks, Ludo’.