diff options
Diffstat (limited to 'gtwiwtg.lisp')
| -rw-r--r-- | gtwiwtg.lisp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gtwiwtg.lisp b/gtwiwtg.lisp index 46f8752..c07c015 100644 --- a/gtwiwtg.lisp +++ b/gtwiwtg.lisp @@ -36,6 +36,9 @@ (with-slots (next-p-fn state) gen (funcall next-p-fn state))) + +(defun make-dirty (g) (setf (dirty-p g) t)) + ;;; CONSTRUCTORS (defun range (&key (from 0) to (by 1)) @@ -104,6 +107,7 @@ resume when the \"sub iteration\" finishes. It is kind of dark magic, and so I don't recommend using it except in the rareest of circumstances." (assert (not (eq gen1 gen2))) + (make-dirty gen2) (let ((orig-pred (next-p-fn gen1)) (orig-fn (next-fn gen1))) (with-slots ((s1 state) (p1 next-p-fn) (f1 next-fn)) gen1 @@ -135,6 +139,8 @@ THIS FUNCTION MODIFIES AND RETURNS ITS FIRST GENERATOR ARGUMENT. Also, all of the generators must be different from one another. If any compare EQL then an error is signaled." (assert (all-good (list* gen gens))) + (dolist (g gens) (make-dirty g)) ;; to ensure gens wont be re-used after use here. + (let ((orig-fns (mapcar #'next-fn (cons gen gens))) (orig-preds (mapcar #'next-p-fn (cons gen gens)))) (setf (gen-state gen) (mapcar #'gen-state (cons gen gens)) @@ -227,6 +233,7 @@ EQL, an error will be signalled. CONCAT! MODIFIES AND RETURNS ITS FIRST ARGUMENT." (assert (all-good (list* gen gens))) + (dolist (g gens) (make-dirty g)) ;; to help ensure that gens can be combined elsewhere (bind! #'identity (seq (list* gen gens)))) (defun zip! (gen &rest gens) |