From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 26 Mar 2017 14:16:18 +0000 (+0100)
Subject: src/module-parse.lisp (read-module): Provide sensible default error-recovery.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/sod/commitdiff_plain/a8bc78318db49efeb25d4a042fafde7c0ca1c0a5

src/module-parse.lisp (read-module): Provide sensible default error-recovery.

By default, if there's an error parsing a module item, skip and consume
until the next `;' or `}'.  This actually seems to work quite well.
---

diff --git a/src/module-parse.lisp b/src/module-parse.lisp
index 197e3e4..211f2c7 100644
--- a/src/module-parse.lisp
+++ b/src/module-parse.lisp
@@ -112,7 +112,9 @@   (define-module (pathname :location location :truename truename)
 		(parse (skip-many ()
 			  (seq ((pset (parse-property-set scanner))
 				(nil (error ()
-				       (plug module scanner pset))))
+					 (plug module scanner pset)
+				       (skip-until (:keep-end nil)
+					 #\; #\}))))
 			    (check-unused-properties pset))))
 	      (declare (ignore consumedp))
 	      (unless winp (syntax-error scanner result)))))))))