I haven't tried to do this, but I'd start by unravelling the code in pp_hot.c:pp_match(), and see if you can extract from that the infrastructure you need.

The guts is incorporated in the CALLREGEXEC() macro, which (via a pluggable hook, used by the re module) makes its way to regexec.c:Perl_regexec_flags() where the actual match happens - the regexp compile already happens before this - and setting things up correctly before that call is the critical bit.

It would certainly help if you can find prior art - if you have a greppable CPAN mirror handy, a search for CALLREGEXEC and/or regexec_flags should tell you if there is any to be found there.

Time permitting, I'd be happy to help debug any problems you run into, feel free to give me a shout.

Hugo

In reply to Re: Regex from XS by hv
in thread Regex from XS by creamygoodness

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