Re: (??{ lexical variable })

Would a closure be close to what you want?

{
    my $acc = '';
    sub inlinetag {
#   ... whatever this does
    }
}
[download]

I haven't figured out just what this is supposed to do, but it may help to note that (??{}) are done like quoted eval, compiled in an interlude during runtime.

A lexical is not constructed until the my statement declaring it hits its semicolon.

After Compline,
Zaxo

Comment on Re: (??{ lexical variable }) Download Code

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Re: Re: (??{ lexical variable }) by Juerd (Abbot) on Dec 03, 2002 at 09:09 UTC
Would a closure be close to what you want? Not really, as the snippet I pasted is part of a larger whole: { my %exlinx; my $link = qr/ \[ (?: ([^\|\]]) \\| )? ([^\]]) \] /x; # 1: u +rl 2: text my $inlinetag = do { our $acc = qr/(?> \{ (?: (?> \\. \| [^\\{}]+ \| (??{ $acc }) ) )* + \} )/x; qr/ \{ (\w+): ( (?: (?> \\. \| [^\\{}]+ \| (??{ $acc }) ) )* +) \} /x; }; # 1: tag 2: text my $overig = qr/(?: (?> \\. \| [^{\[\\]+ ) )/sx; # -: text my $stuff = qr/(?> $overig ) \| (?> $link ) \| (?> $inlinetag ) +/x; my $paratag = qr/(\w+):\s/; my $n = qr/\n\s\n/; # These return html-ified versions of the input sub inlineparse { ... } sub paraparse { ... } sub colorize { ... } } [download] it may help to note that (??{}) are done like quoted eval, compiled in an interlude during runtime.* That does help a little, but why doesn't it give me the famous Global symbol "$acc" requires explicit package name, then? I have no $acc declared in the scope where $inlinetag is being used. - Yes, I reinvent wheels. - Spam: Visit eurotraQ.	[reply] [d/l]

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Re: Re: (??{ lexical variable })
by Juerd (Abbot) on Dec 03, 2002 at 09:09 UTC

Would a closure be close to what you want?

Not really, as the snippet I pasted is part of a larger whole:

{
    my %exlinx;
    my $link       = qr/ \[ (?: ([^|\]]*) \| )? ([^\]]*) \] /x; # 1: u
+rl 2: text
    my $inlinetag = do {
        our $acc =
        qr/(?> \{          (?: (?> \\. | [^\\{}]+ | (??{ $acc }) ) )* 
+  \} )/x;
        qr/    \{ (\w+): ( (?: (?> \\. | [^\\{}]+ | (??{ $acc }) ) )* 
+) \}  /x;
    }; # 1: tag 2: text
    my $overig     = qr/(?: (?> \\. | [^{\[\\]+ ) )*/sx; # -: text
    my $stuff      = qr/(?> $overig ) | (?> $link ) | (?> $inlinetag )
+/x;
    my $paratag    = qr/(\w+):\s*/;
    my $n          = qr/\n\s*\n/;

    # These return html-ified versions of the input
    sub inlineparse { ... }
    sub paraparse { ... }
    sub colorize { ... }
}
[download]

it may help to note that (??{}) are done like quoted eval, compiled in an interlude during runtime.

That does help a little, but why doesn't it give me the famous Global symbol "$acc" requires explicit package name, then? I have no $acc declared in the scope where $inlinetag is being used.

- Yes, I reinvent wheels.
- Spam: Visit eurotraQ.

[reply]
[d/l]