Add SATISFIES-TEST-P utility function, to be used by functions with key, test

and test-not keyword arguments.

diff --git a/src/utils.lisp b/src/utils.lisp
index 430b6a7..76b396d 100644 (file)
--- a/src/utils.lisp
+++ b/src/utils.lisp
@@ -84,3 +84,10 @@
 (defun float-to-string (x)
   #+jscl (float-to-string x)
   #-jscl (format nil "~f" x))
+
+(defun satisfies-test-p (x y &key key (test #'eql) testp (test-not #'eql) test-not-p)
+  (when (and testp test-not-p)
+    (error "Both test and test-not are set"))
+  (let ((key-val (if key (funcall key y) y))
+        (fn (if test-not-p (complement test-not) test)))
+    (funcall fn x key-val)))