Commit | Line | Data |
cd16c24c |
1 | package if; |
2 | |
3 | our $VERSION = '0.01'; |
4 | |
5 | sub work { |
6 | my $method = shift() ? 'import' : 'unimport'; |
7 | return unless shift; # CONDITION |
8 | my $p = shift; # PACKAGE |
9 | eval "require $p" or die; # Adds .pm etc if needed |
10 | $p->$method(@_) if $p->can($method); |
11 | } |
12 | |
13 | sub import { shift; unshift @_, 1; goto &work } |
14 | sub unimport { shift; unshift @_, 0; goto &work } |
15 | |
16 | 1; |
17 | __END__ |
18 | |
19 | =head1 NAME |
20 | |
21 | if - C<use> a Perl module if a condition holds |
22 | |
23 | =head1 SYNOPSIS |
24 | |
25 | use if CONDITION, MODULE => ARGUMENTS; |
26 | |
27 | =head1 DESCRIPTION |
28 | |
29 | The construct |
30 | |
31 | use if CONDITION, MODULE => ARGUMENTS; |
32 | |
33 | has no effect unless C<CONDITION> is true. In this case the effect is |
34 | the same as of |
35 | |
36 | use MODULE ARGUMENTS; |
37 | |
38 | =head1 BUGS |
39 | |
40 | The current implementation does not allow specification of the |
41 | required version of the module. |
42 | |
43 | =head1 AUTHOR |
44 | |
45 | Ilya Zakharevich L<mailto:perl-module-if@ilyaz.org>. |
46 | |
47 | =cut |
48 | |