Added %top block syntax.

Added test for %top block.
Documented %top block.

1 files changed, 6 insertions, 11 deletions

diff --git a/flexdef.h b/flexdef.h
index d704cf1..facc266 100644
--- a/flexdef.h
+++ b/flexdef.h
@@ -1094,18 +1094,13 @@ extern struct Buf *buf_prints PROTO((struct Buf *buf, const char *fmt, const cha
 extern struct Buf *buf_m4_define PROTO((struct Buf *buf, const char* def, const char* val));
 extern struct Buf *buf_m4_undefine PROTO((struct Buf *buf, const char* def));
 extern struct Buf *buf_print_strings PROTO((struct Buf * buf, FILE* out));
+extern struct Buf *buf_linedir PROTO((struct Buf *buf, const char* filename, int lineno));
 
-/* a string buffer for #define's generated by user-options on cmd line. */
-extern struct Buf userdef_buf;
-
-/* a char* buffer to save #define'd some symbols generated by flex. */
-extern struct Buf defs_buf;
-
-/* a string buffer to hold yydmap elements */
-extern struct Buf yydmap_buf;
-
-/* Holds m4 definitions. */
-extern struct Buf m4defs_buf;
+extern struct Buf userdef_buf; /* a string buffer for #define's generated by user-options on cmd line. */
+extern struct Buf defs_buf;    /* a char* buffer to save #define'd some symbols generated by flex. */
+extern struct Buf yydmap_buf;  /* a string buffer to hold yydmap elements */
+extern struct Buf m4defs_buf;  /* Holds m4 definitions. */
+extern struct Buf top_buf;     /* contains %top code. String buffer. */
 
 /* For blocking out code from the header file. */
 #define OUT_BEGIN_CODE() outn("m4_ifdef( [[M4_YY_IN_HEADER]],,[[")