package Silly;
use Sub::Quote qw(quote_sub unquote_sub quoted_from_sub);
quote_sub 'Silly::kitty', q{ print "meow" };
quote_sub 'Silly::doggy', q{ print "woof" };
my $sound = 0;
quote_sub 'Silly::dagron',
q{ print ++$sound % 2 ? 'burninate' : 'roar' },
{ '$sound' => \$sound };
And elsewhere:
Silly->kitty; # meow Silly->doggy; # woof Silly->dagron; # burninate Silly->dagron; # roar Silly->dagron; # burninate
my $coderef = quote_sub 'Foo::bar', q{ print $x++ . "\n" }, { '$x' => \0 };
Arguments: ?$name, $code, ?\%captures, ?\%options
$name is the subroutine where the coderef will be installed.
$code is a string that will be turned into code.
"\%captures" is a hashref of variables that will be made available to the code. The keys should be the full name of the variable to be made available, including the sigil. The values should be references to the values. The variables will contain copies of the values. See the ``SYNOPSIS'''s "Silly::dagron" for an example using captures.
Exported by default.
options
my $coderef = unquote_sub $sub;
Forcibly replace subroutine with actual code.
If $sub is not a quoted sub, this is a no-op.
my $data = quoted_from_sub $sub; my ($name, $code, $captures, $compiled_sub) = @$data;
Returns original arguments to quote_sub, plus the compiled version if this sub has already been unquoted.
Note that $sub can be either the original quoted version or the compiled version for convenience.
my $prelude = capture_unroll '$captures', {
'$x' => 1,
'$y' => 2,
}, 4;
my $inlined_code = inlinify q{
my ($x, $y) = @_;
print $x + $y . "\n";
}, '$x, $y', $prelude;
Takes a string of code, a string of arguments, a string of code which acts as a ``prelude'', and a Boolean representing whether or not to localize the arguments.
my $quoted_value = quotify $value;
Quotes a single (non-reference) scalar value for use in a code string. Numbers aren't treated specially and will be quoted as strings, but undef will quoted as "undef()".
my $prelude = capture_unroll '$captures', {
'$x' => 1,
'$y' => 2,
}, 4;
Arguments: $from, \%captures, $indent
Generates a snippet of code which is suitable to be used as a prelude for ``inlinify''. $from is a string will be used as a hashref in the resulting code. The keys of %captures are the names of the variables and the values are ignored. $indent is the number of spaces to indent the result by.
my $hash = {
coderef => qsub q{ print "hello"; },
other => 5,
};
Arguments: $code
Works exactly like ``quote_sub'', but includes a prototype to only accept a single parameter. This makes it easier to include in hash structures or lists.
my $var_name = '$variable_for_' . sanitize_identifier('@name');
quote_sub qq{ print \$${var_name} }, { $var_name => \$value };
Arguments: $identifier
Sanitizes a value so that it can be used in an identifier.
So when you pass in:
quote_sub q{ return 1 if $condition; $morecode }
It might turn up in the intended context as follows:
sub foo {
<important code a>
do {
return 1 if $condition;
$morecode
};
<important code b>
}
Which will obviously return from foo, when all you meant to do was return from the code context in quote_sub and proceed with running important code b.
Development and contribution IRC: #web-simple on irc.perl.org
Bugtracker: <https://rt.cpan.org/Public/Dist/Display.html?Name=Sub-Quote>
Git repository: <git://github.com/moose/Sub-Quote.git>
Git browser: <https://github.com/moose/Sub-Quote>
ribasushi - Peter Rabbitson (cpan:RIBASUSHI) <ribasushi@cpan.org>
Mithaldu - Christian Walde (cpan:MITHALDU) <walde.christian@googlemail.com>
tobyink - Toby Inkster (cpan:TOBYINK) <tobyink@cpan.org>
haarg - Graham Knop (cpan:HAARG) <haarg@cpan.org>
bluefeet - Aran Deltac (cpan:BLUEFEET) <bluefeet@gmail.com>
ether - Karen Etheridge (cpan:ETHER) <ether@cpan.org>
dolmen - Olivier Mengué (cpan:DOLMEN) <dolmen@cpan.org>
alexbio - Alessandro Ghedini (cpan:ALEXBIO) <alexbio@cpan.org>
getty - Torsten Raudssus (cpan:GETTY) <torsten@raudss.us>
arcanez - Justin Hunter (cpan:ARCANEZ) <justin.d.hunter@gmail.com>
kanashiro - Lucas Kanashiro (cpan:KANASHIRO) <kanashiro.duarte@gmail.com>
djerius - Diab Jerius (cpan:DJERIUS) <djerius@cfa.harvard.edu>