X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/3109662aca9c06495ac22c5c58b46e1c036aca5c..9ec578d9fe450b7e7f9030dc9d930185593aa991:/src/parser/scanner-charbuf-impl.lisp

diff --git a/src/parser/scanner-charbuf-impl.lisp b/src/parser/scanner-charbuf-impl.lisp
index 9cafc3d..272c7ed 100644
--- a/src/parser/scanner-charbuf-impl.lisp
+++ b/src/parser/scanner-charbuf-impl.lisp
@@ -28,8 +28,9 @@
 ;;;--------------------------------------------------------------------------
 ;;; Infrastructure types.
 
-(defconstant charbuf-size 4096
-  "Number of characters in a character buffer.")
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (defconstant charbuf-size 4096
+    "Number of characters in a character buffer."))
 
 (deftype charbuf ()
   "Type of character buffers."
@@ -66,11 +67,18 @@
    We remember the buffer-chain link, so that we can retrace our steps up to
    the present.  We also need the index at which we continue reading
    characters; and the line and column numbers to resume from."
+  (scanner nil :type charbuf-scanner :read-only t)
   (link nil :type charbuf-chain-link :read-only t)
   (index 0 :type charbuf-index :read-only t)
   (line 0 :type fixnum :read-only t)
   (column 0 :type fixnum :read-only t))
 
+(defmethod file-location ((place charbuf-scanner-place))
+  (make-file-location (scanner-filename
+		       (charbuf-scanner-place-scanner place))
+		      (charbuf-scanner-place-line place)
+		      (charbuf-scanner-place-column place)))
+
 ;;;--------------------------------------------------------------------------
 ;;; Main class.
 
@@ -316,7 +324,7 @@
     (incf captures)
     (unless tail
       (setf tail (make-charbuf-chain-link :buf buf :size size)))
-    (make-charbuf-scanner-place :link tail :index index
+    (make-charbuf-scanner-place :scanner scanner :link tail :index index
 				:line line :column column)))
 
 (defmethod scanner-restore-place ((scanner charbuf-scanner) place)
@@ -330,6 +338,7 @@
 	    tail link))))
 
 (defmethod scanner-release-place ((scanner charbuf-scanner) place)
+  (declare (ignore place))
   (with-slots (captures) scanner
     (decf captures)))
 
@@ -365,7 +374,8 @@
   (let* ((slices nil)
 	 (place-b (or place-b
 		      (with-slots (index tail) scanner
-			(make-charbuf-scanner-place :link tail
+			(make-charbuf-scanner-place :scanner scanner
+						    :link tail
 						    :index index))))
 	 (last-link (charbuf-scanner-place-link place-b)))
     (flet ((bad ()
@@ -399,7 +409,8 @@
   (make-instance 'charbuf-scanner-stream :scanner scanner))
 
 (defmethod stream-read-sequence
-    ((stream charbuf-scanner-stream) (seq string) &optional (start 0) end)
+    ((stream charbuf-scanner-stream) (seq string)
+     #+clisp &key #-clisp &optional (start 0) end)
   (with-slots (scanner) stream
     (unless end (setf end (length seq)))
     (let ((i start) (n (- end start)))