Hi

ATM I need plenty of hacks to be able to dynamically see the OP-Tree of a Regex at runtime cause use re 'debug' emits the code of a regex at compile time to STDERR.

lanx@nc10-ubuntu:~$ perl
use re 'debug';
my $a=qr/(?<C>1)(?<D>2)(3)(?<A>4)/;
Compiling REx "(?<C>1)(?<D>2)(3)(?<A>4)"
Final program:
   1: OPEN1 'C' (3)
   3:   EXACT <1> (5)
   5: CLOSE1 'C' (7)
   7: OPEN2 'D' (9)
   9:   EXACT <2> (11)
  11: CLOSE2 'D' (13)
  13: OPEN3 (15)
  15:   EXACT <3> (17)
  17: CLOSE3 (19)
  19: OPEN4 'A' (21)
  21:   EXACT <4> (23)
  23: CLOSE4 'A' (25)
  25: END (0)
anchored "1234" at 0 (checking anchored) minlen 4 
Freeing REx: "(?<C>1)(?<D>2)(3)(?<A>4)"

[download]

In Re^2: Is there really no @LAST_MATCH_START equivalent for named capture groups? I need to recompile a new regex within an eval while redirecting STDERR to a variable...

Thats hacky and cumbersome!

Is there any simpler or cleaner way to achieve this?

Cheers Rolf

In reply to Dynamically inspecting Regex OP-Codes at runtime? by LanX

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