X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/sod/blobdiff_plain/118f5c0006f241bc7c03a7741f73b87b92b4e938..4ee476bc29b80fca2faabb4bd286ca70c98f7a44:/src/final.lisp

diff --git a/src/final.lisp b/src/final.lisp
index b98acd1..96e9625 100644
--- a/src/final.lisp
+++ b/src/final.lisp
@@ -39,16 +39,20 @@ (export '*debugout-pathname*)
 (defvar *debugout-pathname* #p"debugout.c")
 
 (export 'test-module)
-(defun test-module (path &key reason)
+(defun test-module (path &key reason clear backtrace)
   "Read a module from PATH, to exercise the machinery.
 
+   If CLEAR is non-nil, then reset the translator's state before proceeding.
+
    If REASON is non-nil, then output the module to `*debugout-pathname*' with
    that REASON.
 
    Return a two-element list (NERROR NWARNING) of the number of errors and
    warnings encountered while processing the module."
+  (when clear (clear-the-decks))
   (multiple-value-bind (module nerror nwarning)
-      (count-and-report-errors () (read-module path))
+      (if backtrace (read-module path)
+	  (count-and-report-errors () (read-module path)))
     (when (and module reason)
       (with-open-file (out *debugout-pathname*
 		       :direction :output
@@ -106,16 +110,16 @@ (defmacro test-parser ((scanner &key backtrace) parser input)
 			      ,scanner (make-instance
 					'sod-token-scanner
 					:char-scanner ,char-scanner))
-			(multiple-value-bind (,value ,winp ,consumedp)
-			    (parse ,parser)
-			  (declare (ignore ,consumedp))
-			  (cond (,winp ,value)
-				(t (syntax-error ,scanner ,value)
-				   nil)))))
+			(with-default-error-location (,scanner)
+			  (multiple-value-bind (,value ,winp ,consumedp)
+			      (parse ,parser)
+			    (declare (ignore ,consumedp))
+			    (cond (,winp ,value)
+				  (t (syntax-error ,scanner ,value)
+				     nil))))))
 		 (if ,backtrace (,body)
 		     (count-and-report-errors ()
-		       (with-default-error-location (,scanner)
-			 (,body)))))
+		       (,body))))
 	     (let ((,where (scanner-capture-place ,char-scanner)))
 	       (values ,value
 		       (list ,nerror ,nwarn)