r2799: *** empty log message ***

[lml.git] / lml.cl
diff --git a/lml.cl b/lml.cl

index 2c30bbb644cf6d37d6519e6aef119b6ade7987b7..c3542bb423a88a28dc3ee5d481484b80a138f826 100644 (file)
--- a/lml.cl
+++ b/lml.cl
@@ -7,7 +7,7 @@
  ;;;; Programmer:    Kevin M. Rosenberg
  ;;;; Date Started:  Aug 2002
  ;;;;
-;;;; $Id: lml.cl,v 1.5 2002/09/16 08:16:49 kevin Exp $
+;;;; $Id: lml.cl,v 1.13 2002/09/16 10:18:19 kevin Exp $
  ;;;;
  ;;;; This file, part of LML, is Copyright (c) 2002 by Kevin M. Rosenberg
  ;;;;
@@ -23,7 +23,7 @@
    "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML//EN\">")
  
  (defun xml-prologue-string ()
-  "version=\"1.0\" encoding=\"iso-8859-1\" standalone=\"yes\"?>")
+  "<?xml version=\"1.0\" encoding=\"iso-8859-1\" standalone=\"yes\"?>")
  
  (defun xhtml-prologue-string ()
    "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">")
@@ -200,3 +200,60 @@
       (xhtml-prologue)
       (html :xmlns "http://www.w3.org/1999/xhtml"
         ,@body)))
+
+(defun new-string ()
+  (make-array 1024 :fill-pointer 0 :adjustable t :element-type 'character))
+
+(set-macro-character #\[
+  #'(lambda (stream char)
+      (declare (ignore char))
+      (let ((forms '())
+           (curr-string (new-string))
+           (paren-level 0)
+           (got-comma nil))
+       (do ((ch (read-char stream t nil t) (read-char stream t nil t)))
+           ((eql ch #\]))
+         (if got-comma
+             (if (eql ch #\()
+                 ;; Starting top-level ,(
+                 (progn
+                   (push `(lml-print ,curr-string) forms)
+                   (setq curr-string (new-string))
+                   (setq got-comma nil)
+                   (vector-push #\( curr-string)
+                   (do ((ch (read-char stream t nil t) (Read-char stream t nil t)))
+                       ((and (eql ch #\)) (zerop paren-level)))
+                     (when (eql ch #\])
+                       (format *trace-output* "Syntax error reading #\]")
+                       (return nil))
+                     (case ch
+                       (#\(
+                        (incf paren-level))
+                       (#\)
+                        (decf paren-level)))
+                     (vector-push-extend ch curr-string))
+                   (vector-push-extend #\) curr-string)
+                   (let ((eval-string (read-from-string curr-string))
+                         (res (gensym)))
+                     (push
+                      `(let ((,res ,eval-string))
+                         (when ,res
+                           (lml-print ,res)))
+                      forms))
+                   (setq curr-string (new-string)))
+               ;; read comma, then non #\( char
+               (progn
+                 (unless (eql ch #\,)
+                   (setq got-comma nil))
+                 (vector-push-extend #\, curr-string) ;; push previous command
+                 (vector-push-extend ch curr-string)))
+           ;; previous character is not a comma
+           (if (eql ch #\,)
+               (setq got-comma t)
+             (progn
+               (setq got-comma nil)
+               (vector-push-extend ch curr-string)))))
+       (push `(lml-print ,curr-string) forms)
+       `(progn ,@(nreverse forms)))))
+
+