X-Git-Url: https://git.distorted.org.uk/~mdw/fwd/blobdiff_plain/77d0e3dc66ecd3028914496e4c0084bcb1f8f7af..00e3c0f1bbe99682debd4e34d3d3bd950f8c30cb:/scan.h

diff --git a/scan.h b/scan.h
index eee6f61..756029b 100644
--- a/scan.h
+++ b/scan.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: scan.h,v 1.2 1999/07/26 23:24:33 mdw Exp $
+ * $Id: scan.h,v 1.4 2002/02/22 23:44:16 mdw Exp $
  *
  * Character scanners
  *
@@ -29,6 +29,13 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: scan.h,v $
+ * Revision 1.4  2002/02/22 23:44:16  mdw
+ * Miscellaneous tidying up, to make this code independent of `fw'.  It
+ * might end up in a library somewhere.
+ *
+ * Revision 1.3  2002/01/13 14:50:07  mdw
+ * Make delimiters be a property of a scanner.
+ *
  * Revision 1.2  1999/07/26 23:24:33  mdw
  * Complete rewrite.  Allow a list of character sources to enable changes
  * during parsing of syntactic constructs.
@@ -60,7 +67,7 @@ typedef struct scansrc {
   struct scansrc_ops *ops;		/* Pointer to operations table */
   char *src;				/* Name of this source */
   int line;				/* Current line number */
-  int pushback;				/* Pushback character */
+  dstr pushback;			/* Pushback characters */
   char *tok;				/* Token pushback */
   unsigned t;				/* Token type pushback */
 } scansrc;
@@ -78,6 +85,7 @@ typedef struct scanner {
   scansrc *head, **tail;		/* Scanner list head and tail */
   int t;				/* Token type */
   dstr d;				/* Current token value */
+  const char *wbegin, *wcont;		/* Parsing exception strings */
 } scanner;
 
 /*----- Particular scanner types ------------------------------------------*/
@@ -85,7 +93,7 @@ typedef struct scanner {
 /* --- @scan_file@ --- *
  *
  * Arguments:	@FILE *fp@ = pointer to file descriptor
- *		@char *name@ = pointer to source file name
+ *		@const char *name@ = pointer to source file name
  *		@unsigned f@ = flags
  *
  * Returns:	A scanner source.
@@ -93,10 +101,10 @@ typedef struct scanner {
  * Use:		Creates a new scanner source for reading from a file.
  */
 
-extern scansrc *scan_file(FILE */*fp*/, char */*name*/, unsigned /*f*/);
+#define SCF_NOCLOSE 1u			/* Don't close @fp@ when finished */
 
-#define SCF_NOCLOSE 1u
-#define SCF_FREENAME 2u
+extern scansrc *scan_file(FILE */*fp*/, const char */*name*/,
+			  unsigned /*f*/);
 
 /* --- @scan_argv@ --- *
  *