vern%lbl-pistachio@LBL-RTSG.ARPA (Vern Paxson) (05/07/88)
A note of warning: the patch I just posted included some extraneous diffs
to "flex.skel" which will cause problems unless the -f/-F patch posted
earlier is present. The "pure" reject patch is as follows.
Vern
*** Release-1.0/distribution/flex.skel Sun Apr 10 21:18:34 1988
--- flex.skel Fri May 6 22:48:52 1988
***************
*** 28,33 ****
--- 28,36 ----
YY_DECL
{
int yy_n_chars, yy_lp, yy_iii, yy_buf_pos, yy_act;
+ #ifdef FLEX_REJECT_ENABLED
+ int yy_full_match;
+ #endif
%% user's declarations go here
***************
*** 41,46 ****
--- 44,55 ----
goto get_next_token;
do_action:
+
+ #ifdef FLEX_REJECT_ENABLED
+ /* remember matched text in case we back up due to trailing context */
+ yy_full_match = yy_c_buf_p;
+ #endif
+
for ( ; ; )
{
YY_DO_BEFORE_ACTION
*** Release-1.0/distribution/flexskeldef.h Sun Apr 10 21:07:36 1988
--- flexskeldef.h Fri May 6 22:51:39 1988
***************
*** 33,38 ****
--- 33,39 ----
#define REJECT \
{ \
YY_DO_BEFORE_SCAN; /* undo effects of setting up yytext */ \
+ yy_c_buf_p = yy_full_match; /* restore possibly backed-over text */ \
++yy_lp; \
goto find_rule; \
}