+;;; more lambda-list checking
+;;;
+;;; DEFGENERIC lambda lists are subject to various limitations, as per
+;;; section 3.4.2 of the ANSI spec. Since Alexey Dejneka's patch for
+;;; bug 191-b ca. sbcl-0.7.22, these limitations should be enforced.
+(labels ((coerce-to-boolean (x)
+ (if x t nil))
+ (%like-or-dislike (expr expected-failure-p)
+ (declare (type boolean expected-failure-p))
+ (format t "~&trying ~S~%" expr)
+ (multiple-value-bind (fun warnings-p failure-p)
+ (compile nil
+ `(lambda ()
+ ,expr))
+ (declare (ignore fun))
+ ;; In principle the constraint on WARNINGS-P below seems
+ ;; reasonable, but in practice we get warnings about
+ ;; undefined functions from the DEFGENERICs, apparently
+ ;; because the DECLAIMs which ordinarily prevent such
+ ;; warnings don't take effect because EVAL-WHEN
+ ;; (:COMPILE-TOPLEVEL) loses its magic when compiled
+ ;; within a LAMBDA. So maybe we can't test WARNINGS-P
+ ;; after all?
+ ;;(unless expected-failure-p
+ ;; (assert (not warnings-p)))
+ (assert (eq (coerce-to-boolean failure-p) expected-failure-p))))
+ (like (expr)
+ (%like-or-dislike expr nil))
+ (dislike (expr)
+ (%like-or-dislike expr t)))
+ ;; basic sanity
+ (dislike '(defgeneric gf-for-ll-test-0 ("a" #p"b")))
+ (like '(defgeneric gf-for-ll-test-1 ()))
+ (like '(defgeneric gf-for-ll-test-2 (x)))
+ ;; forbidden default or supplied-p for &OPTIONAL or &KEY arguments
+ (dislike '(defgeneric gf-for-ll-test-3 (x &optional (y 0))))
+ (like '(defgeneric gf-for-ll-test-4 (x &optional y)))
+ (dislike '(defgeneric gf-for-ll-test-5 (x y &key (z :z z-p))))
+ (like '(defgeneric gf-for-ll-test-6 (x y &key z)))
+ (dislike '(defgeneric gf-for-ll-test-7 (x &optional (y 0) &key z)))
+ (like '(defgeneric gf-for-ll-test-8 (x &optional y &key z)))
+ (dislike '(defgeneric gf-for-ll-test-9 (x &optional y &key (z :z))))
+ (like '(defgeneric gf-for-ll-test-10 (x &optional y &key z)))
+ (dislike '(defgeneric gf-for-ll-test-11 (&optional &key (k :k k-p))))
+ (like '(defgeneric gf-for-ll-test-12 (&optional &key k)))
+ ;; forbidden &AUX
+ (dislike '(defgeneric gf-for-ll-test-13 (x y z &optional a &aux g h)))
+ (like '(defgeneric gf-for-ll-test-14 (x y z &optional a)))
+ (dislike '(defgeneric gf-for-ll-test-bare-aux-1 (x &aux)))
+ (like '(defgeneric gf-for-ll-test-bare-aux-2 (x)))
+ ;; also can't use bogoDEFMETHODish type-qualifier-ish decorations
+ ;; on required arguments
+ (dislike '(defgeneric gf-for-11-test-15 ((arg t))))
+ (like '(defgeneric gf-for-11-test-16 (arg))))
+