Re: capture through regex variable

[Theo van den Heuvel]

Thanks Patrick,

it works great.

Theo

Patrick R. Michaud schreef op 2016-02-22 11:16:

Dynamic subregexes such as <$top> are non-capturing by default.  You
can easily capture the result by using something like <top=$top>
instead:

    $ cat xyz.p6
    my $match;

    my $top = rx/ \( $<core> = [ \w* ] \) /;

    given "(abc)" {
       $match = m/^ <top=$top> /;
    }

    if $match {
       say "core is { ~$<top><core> }";
    }

    $ ./perl6 xyz.p6
    core is abc

Hope this helps,

Pm

On Mon, Feb 22, 2016 at 10:25:19AM +0100, Theo van den Heuvel wrote:

Hi all,

I am trying to change a regex programmatically. For that I insert a variable in another regex. However, the match object appears to have lost the capture

of the inner regex. In a code example:

=========
my Match $match;

my $top = rx/ \( $<core> = [ \w* ] \) /;

given "(abc)" {
  $match = m/^ <$top>/;
}

if $match {
  say "core is { ~$<core> }";
}

=========

Using the latest rakudo release (2016.01.1), I find that the matching
process works but the capture gets lost. Any ideas?

Thanks,

--
Theo van den Heuvel
Van den Heuvel HLT Consultancy

--
Theo van den Heuvel
Van den Heuvel HLT Consultancy
Malden, The Netherlands
 +31 24 3736356
 +31 625492788