Abandoned atoms work: hardly any performance benefit.

[sod] / src / lexer-impl.lisp

diff --git a/src/lexer-impl.lisp b/src/lexer-impl.lisp
index 1686179..de76371 100644 (file)
--- a/src/lexer-impl.lisp
+++ b/src/lexer-impl.lisp
@@ -67,7 +67,7 @@
     (scanner-step scanner)))
 
 (defun parse-error-recover (scanner parser recover
-                           &key ignore-unconsumed force-progress)
+                           &key ignore-unconsumed force-progress action)
   "This is the implementation of the `error' parser."
   (multiple-value-bind (result win consumedp) (funcall parser)
     (cond ((or win
@@ -93,6 +93,7 @@
           ;; simply to propagate the current failure back to the caller, but
           ;; we handled that case above.
           (syntax-error scanner result)
+          (when action (funcall action))
           (when (and force-progress (not consumedp)) (scanner-step scanner))
           (funcall recover)))))