X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;ds=sidebyside;f=macros.lisp;h=bf2714b86d441eec6f9d0c4bbce5a64f7f539d73;hb=93ac7eed8f69f19013472f078b544be145619ff5;hp=9b6150a470dc9597470fe8ad2ba8e303e9c3e853;hpb=526eef1b59e071cbb4ecd35f73a14c1a3f8e32b6;p=kmrcl.git

diff --git a/macros.lisp b/macros.lisp
index 9b6150a..bf2714b 100644
--- a/macros.lisp
+++ b/macros.lisp
@@ -239,3 +239,18 @@
      ,@(mapcar
 	(lambda (x) (list 'ignore-errors x))
 	forms)))
+
+(defmacro ppmx (form)
+  "Pretty prints the macro expansion of FORM."
+  `(let* ((exp1 (macroexpand-1 ',form))
+	  (exp (macroexpand exp1))
+	  (*print-circle* nil))
+     (cond ((equal exp exp1)
+	    (format t "~&Macro expansion:")
+	    (pprint exp))
+	   (t (format t "~&First step of expansion:")
+	      (pprint exp1)
+	      (format t "~%~%Final expansion:")
+	      (pprint exp)))
+     (format t "~%~%")
+     (values)))