X-Git-Url: http://git.kpe.io/?p=kmrcl.git;a=blobdiff_plain;f=macros.lisp;h=d0ba63c629d8e698cc011c6072ce82c20e7d604d;hp=46894ba5e6fc82e3fc728c8cf2ea5688617e8e85;hb=68c8a7d41640b4b26c0e088c752fb53703f3c548;hpb=8720caa4a3a361abfa6e4cad8128cb89c364ac81

diff --git a/macros.lisp b/macros.lisp
index 46894ba..d0ba63c 100644
--- a/macros.lisp
+++ b/macros.lisp
@@ -147,6 +147,15 @@
      ,@body))
 
 
+(defmacro time-seconds (&body body)
+  (let ((t1 (gensym)))
+    `(let ((,t1 (get-internal-real-time)))
+       (values
+	(progn ,@body)
+	(coerce (/ (- (get-internal-real-time) ,t1)
+		   internal-time-units-per-second)
+		'double-float)))))
+  
 (defmacro time-iterations (n &body body)
   (let ((i (gensym))
 	(count (gensym)))
@@ -233,3 +242,38 @@
 	 (defun ,release-name (instance)
 	   (kmrcl::with-lock-held (,lock-name)
 	     (push instance ,cache-name))))))
+
+(defmacro with-ignore-errors (&rest forms)
+  `(progn
+     ,@(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)))
+
+(defmacro defconstant* (sym value &optional doc)
+  "Ensure VALUE is evaluated only once."
+   `(defconstant ,sym (if (boundp ',sym)
+			  (symbol-value ',sym)
+			  ,value)
+     ,@(when doc (list doc))))
+
+(defmacro defvar-unbound (sym &optional (doc ""))
+    "defvar with a documentation string."
+    `(progn
+      (defvar ,sym)
+      (setf (documentation ',sym 'variable) ,doc)))
+