Hi Adrian I tried to work out with your suggestion but seeing not any reflection in output. I am not able to understand where it is going wrong?
Thanks & Regards Hardik Parikh -----Original Message----- From: Adrian Thurston [mailto:[email protected]] Sent: Sunday, December 21, 2008 9:01 AM To: [email protected] Subject: Re: [ragel-users] Problem with tag comment implementation Hi Hardik, The problem here is very subtle. Conditions are executed before the actions on the same character, so the test of stringcmp is running before it is set. Change the embedding of tagend to a "to state" action using: >to(tagend) That should do it. -Adrian Hardik Parikh wrote: > Hi, > > > > I have requirement to consider following as valid comment in source > language > > > > |abc# > > Some description ... > > #abc| > > > > And following is invalid comment > > > > |abc# > > Some description ... > > #xyz| > > > > And for above requirement I need to capture token string and performed > match operation as there is no inbuilt support for backward reference in > ragel > > I tried out with following implementation > > > > action mark_start{ > > start = fpc+1; > > // printf(" Mark start at %c\n",fc); > > } > > action tagstart{ > > size_t len = fpc - start ; > > s = calloc(len,sizeof(char)); > > strncpy(s,start,len); > > s[len]='\0'; > > // printf("Start : %s\n",s); > > } > > > > action tagend{ > > size_t len = fpc - start ; > > e = calloc(len,sizeof(char)); > > strncpy(e,start,len); > > e[len]='\0'; > > stringcmp = strncmp(e,s,sizeof(s)); > > //printf("End : %s\n",e); > > } > > > > curl_tag_comment = > > '|'@mark_start (nonnewline - ws)* '#'@tagstart @comment( > > newline %{ entity = INTERNAL_NL; } %curl_ccallback > > | > > ws > > | > > (nonnewline - ws) @comment > > )* :>> ('#'@mark_start (nonnewline - ws)* '|' @tagend when { > stringcmp == 0}) @comment; > > > > > > Now I am able to capture both start and end substring properly and able > to do math operation in when condition but it produces as a valid commet > in parser for even a non valid statement. > > > > Like > > > > curl comment |abc# > > curl comment Some description ... > > curl comment #xyz| > > > > Please provide me any suggestions where I am doing something wrong or is > there any other better way to implement the same. > > > > Thanks & Regards > > Hardik Parikh > > > > DISCLAIMER ========== This e-mail may contain privileged and > confidential information which is the property of Persistent Systems > Ltd. It is intended only for the use of the individual or entity to > which it is addressed. If you are not the intended recipient, you are > not authorized to read, retain, copy, print, distribute or use this > message. If you have received this communication in error, please notify > the sender and delete all copies of this message. Persistent Systems > Ltd. does not accept any liability for virus infected mails. > > > ------------------------------------------------------------------------ > > _______________________________________________ > ragel-users mailing list > [email protected] > http://www.complang.org/mailman/listinfo/ragel-users _______________________________________________ ragel-users mailing list [email protected] http://www.complang.org/mailman/listinfo/ragel-users DISCLAIMER ========== This e-mail may contain privileged and confidential information which is the property of Persistent Systems Ltd. It is intended only for the use of the individual or entity to which it is addressed. If you are not the intended recipient, you are not authorized to read, retain, copy, print, distribute or use this message. If you have received this communication in error, please notify the sender and delete all copies of this message. Persistent Systems Ltd. does not accept any liability for virus infected mails. _______________________________________________ ragel-users mailing list [email protected] http://www.complang.org/mailman/listinfo/ragel-users
