X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/df28942de116d6b194f0f2aee3cf20450d5e44aa..d27fd5f3469dc5e39711b8a2d94568b8a9741e5e:/doc/list-exports

diff --git a/doc/list-exports b/doc/list-exports
index 3a444e1..9fc38bb 100755
--- a/doc/list-exports
+++ b/doc/list-exports
@@ -159,6 +159,42 @@
       (and export
 	   (list* (symbolicate 'c-type- (car names)) names)))))
 
+(defmethod form-list-exports
+    ((head (eql 'sod::define-cross-product-types)) tail)
+  "Return the symbols exported by a `define-cross-product-types' form.
+
+   This is a scummy internal macro in `c-types-impl.lisp'.  The syntax is
+
+	(define-cross-product-types PIECES)
+
+   Each piece can be a list of strings, or an atomic string (which is
+   equivalent to a list containing just that string).  For each string formed
+   by concatenating one element from each list in order, define a C type with
+   that name; the Lisp name is constructed by translating the letters to
+   uppercase and replacing underscores by hyphens.  For each such name,
+   export `NAME' and `c-type-NAME'."
+
+  ;; Huh.  I feel a hack coming on.
+  (mapcar (lambda (row)
+	    (intern (with-output-to-string (out)
+		      (dolist (s row)
+			(dotimes (i (length s))
+			  (let ((ch (char s i)))
+			    (if (char= ch #\_)
+				(write-char #\- out)
+				(write-char (char-upcase ch) out))))))))
+	  (reduce (lambda (piece tails)
+		    (mapcan (lambda (tail)
+			      (mapcar (lambda (head)
+					(cons head tail))
+				      (if (listp piece) piece
+					  (list piece))))
+			    tails))
+		  (cons '("" "c-type_") tail)
+		  :from-end t
+		  :initial-value '(nil))))
+
+
 (defmethod form-list-exports ((head (eql 'cl:macrolet)) tail)
   "Return the symbols expored by a toplevel `macrolet' form.