X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/aa14a4cddcb96b681d5c19a2ec8bad382f43b264..9e41cce7de76880e0e61905fb37100e3fade84e7:/src/parser/scanner-impl.lisp

diff --git a/src/parser/scanner-impl.lisp b/src/parser/scanner-impl.lisp
index aa8a98a..fd50333 100644
--- a/src/parser/scanner-impl.lisp
+++ b/src/parser/scanner-impl.lisp
@@ -31,6 +31,9 @@
 (defmethod file-location ((scanner character-scanner))
   (scanner-file-location scanner))
 
+(defmethod file-location ((scanner token-scanner))
+  (scanner-file-location scanner))
+
 ;;;--------------------------------------------------------------------------
 ;;; Streams on character scanners.
 
@@ -59,12 +62,15 @@
 (defstruct (string-scanner
 	     (:constructor make-string-scanner
 		 (string &key (start 0) end
-		  &aux (index start)
+		  &aux (%string string)
+		       (index start)
 		       (limit (or end (length string))))))
   "Scanner structure for a simple string scanner."
-  (string "" :type string :read-only t)
+  (%string "" :type string :read-only t)
   (index 0 :type (and fixnum unsigned-byte))
   (limit nil :type (and fixnum unsigned-byte) :read-only t))
+(define-access-wrapper string-scanner-string string-scanner-%string
+		       :read-only t)
 
 (defmethod scanner-at-eof-p ((scanner string-scanner))
   (>= (string-scanner-index scanner) (string-scanner-limit scanner)))
@@ -83,21 +89,25 @@
 
 (defmethod scanner-interval
     ((scanner string-scanner) place-a &optional place-b)
-  (with-slots (string index) scanner
+  (with-slots ((string %string) index) scanner
     (subseq string place-a (or place-b index))))
 
+(defmethod make-scanner-stream ((scanner string-scanner))
+  (make-instance 'character-scanner-stream :scanner scanner))
+
 ;;;--------------------------------------------------------------------------
 ;;; List scanner.
 
 (export 'list-scanner)
 (defstruct (list-scanner
-	     (:constructor make-list-scanner (list)))
+	     (:constructor make-list-scanner (list &aux (%list list))))
   "Simple token scanner for lists.
 
    The list elements are the token semantic values; the token types are the
    names of the elements' classes.  This is just about adequate for testing
    purposes, but is far from ideal for real use."
-  (list nil :type list))
+  (%list nil :type list))
+(define-access-wrapper list-scanner-list list-scanner-%list)
 
 (defmethod scanner-step ((scanner list-scanner))
   (pop (list-scanner-list scanner)))