diff options
Diffstat (limited to 'lisp/emacs-lisp/generator.el')
| -rw-r--r-- | lisp/emacs-lisp/generator.el | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lisp/emacs-lisp/generator.el b/lisp/emacs-lisp/generator.el index 4e21e792406..bb9fcff1408 100644 --- a/lisp/emacs-lisp/generator.el +++ b/lisp/emacs-lisp/generator.el @@ -674,10 +674,16 @@ encapsulates the state of a computation that produces a sequence of values. Callers can retrieve each value using `iter-next'." (declare (indent defun)) (cl-assert lexical-binding) - `(defun ,name ,arglist - ,(cps-generate-evaluator - `(cl-macrolet ((iter-yield (value) `(cps-internal-yield ,value))) - ,@body)))) + (let (preamble) + (when (stringp (car body)) + (push (pop body) preamble)) + (when (eq (car-safe (car body)) 'declare) + (push (pop body) preamble)) + `(defun ,name ,arglist + ,@(nreverse preamble) + ,(cps-generate-evaluator + `(cl-macrolet ((iter-yield (value) `(cps-internal-yield ,value))) + ,@body))))) (defmacro iter-lambda (arglist &rest body) "Return a lambda generator. |