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package if; |
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our $VERSION = '0.03'; |
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sub work { |
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my $method = shift() ? 'import' : 'unimport'; |
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return unless shift; # CONDITION |
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my $p = $_[0]; # PACKAGE |
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(my $file = "$p.pm") =~ s!::!/!g; |
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require $file or die; |
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my $m = $p->can($method); |
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goto &$m if $m; |
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} |
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sub import { shift; unshift @_, 1; goto &work } |
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sub unimport { shift; unshift @_, 0; goto &work } |
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1; |
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__END__ |
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=head1 NAME |
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if - C<use> a Perl module if a condition holds |
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=head1 SYNOPSIS |
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use if CONDITION, MODULE => ARGUMENTS; |
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=head1 DESCRIPTION |
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The construct |
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use if CONDITION, MODULE => ARGUMENTS; |
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has no effect unless C<CONDITION> is true. In this case the effect is |
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the same as of |
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use MODULE ARGUMENTS; |
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=head1 BUGS |
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The current implementation does not allow specification of the |
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required version of the module. |
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=head1 AUTHOR |
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Ilya Zakharevich L<mailto:perl-module-if@ilyaz.org>. |
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=cut |
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