4 use warnings FATAL => 'all';
6 use constant _PERL_LT_5_8_4 => ($] < 5.008004) ? 1 : 0;
8 our $VERSION = '1.004000'; # 1.4.0
12 last unless defined && !ref && int != 1;
13 die "Major version specified as $_ - this is strictures version 1";
15 # disable this since Foo->VERSION(undef) correctly returns the version
16 # and that can happen either if our caller passes undef explicitly or
17 # because the for above autovivified $_[1] - I could make it stop but
18 # it's pointless since we don't want to blow up if the caller does
19 # something valid either.
20 no warnings 'uninitialized';
21 shift->SUPER::VERSION(@_);
24 my $extras_load_warned;
26 our $Smells_Like_VCS = -e '.git' || -e '.svn';
30 warnings->import(FATAL => 'all');
32 my $extra_tests = do {
33 if (exists $ENV{PERL_STRICTURES_EXTRA}) {
34 if (_PERL_LT_5_8_4 and $ENV{PERL_STRICTURES_EXTRA}) {
35 die 'PERL_STRICTURES_EXTRA checks are not available on perls older than 5.8.4: '
36 . "please unset \$ENV{PERL_STRICTURES_EXTRA}\n";
38 $ENV{PERL_STRICTURES_EXTRA};
39 } elsif (! _PERL_LT_5_8_4) {
40 !!((caller)[1] =~ /^(?:t|xt|lib|blib)/
46 if (eval { require indirect; 1 }) {
47 indirect->unimport(':fatal');
49 push @failed, 'indirect';
51 if (eval { require multidimensional; 1 }) {
52 multidimensional->unimport;
54 push @failed, 'multidimensional';
56 if (eval { require bareword::filehandles; 1 }) {
57 bareword::filehandles->unimport;
59 push @failed, 'bareword::filehandles';
61 if (@failed and not $extras_load_warned++) {
62 my $failed = join ' ', @failed;
64 strictures.pm extra testing active but couldn't load all modules. Missing were:
68 Extra testing is auto-enabled in checkouts only, so if you're the author
69 of a strictures using module you need to run:
71 cpan indirect multidimensional bareword::filehandles
73 but these modules are not required by your users.
84 strictures - turn on strict and make all warnings fatal
93 use warnings FATAL => 'all';
95 except when called from a file which matches:
97 (caller)[1] =~ /^(?:t|xt|lib|blib)/
99 and when either '.git' or '.svn' is present in the current directory (with
100 the intention of only forcing extra tests on the author side) - or when the
101 PERL_STRICTURES_EXTRA environment variable is set, in which case
108 use warnings FATAL => 'all';
111 no bareword::filehandles;
113 Note that _EXTRA may at some point add even more tests, with only a minor
114 version increase, but any changes to the effect of 'use strictures' in
115 normal mode will involve a major version bump.
117 If any of the extra testing modules are not present, strictures will
118 complain loudly, once, via warn(), and then shut up. But you really
119 should consider installing them, they're all great anti-footgun tools.
123 I've been writing the equivalent of this module at the top of my code for
124 about a year now. I figured it was time to make it shorter.
126 Things like the importer in 'use Moose' don't help me because they turn
127 warnings on but don't make them fatal - which from my point of view is
128 useless because I want an exception to tell me my code isn't warnings clean.
130 Any time I see a warning from my code, that indicates a mistake.
132 Any time my code encounters a mistake, I want a crash - not spew to STDERR
133 and then unknown (and probably undesired) subsequent behaviour.
135 I also want to ensure that obvious coding mistakes, like indirect object
136 syntax (and not so obvious mistakes that cause things to accidentally compile
137 as such) get caught, but not at the cost of an XS dependency and not at the
138 cost of blowing things up on another machine.
140 Therefore, strictures turns on additional checking, but only when it thinks
141 it's running in a test file in a VCS checkout - though if this causes
142 undesired behaviour this can be overridden by setting the
143 PERL_STRICTURES_EXTRA environment variable.
145 If additional useful author side checks come to mind, I'll add them to the
146 _EXTRA code path only - this will result in a minor version increase (i.e.
147 1.000000 to 1.001000 (1.1.0) or similar). Any fixes only to the mechanism of
148 this code will result in a subversion increas (i.e. 1.000000 to 1.000001
151 If the behaviour of 'use strictures' in normal mode changes in any way, that
152 will constitute a major version increase - and the code already checks
153 when its version is tested to ensure that
157 will continue to only introduce the current set of strictures even if 2.0 is
164 This method does the setup work described above in L</DESCRIPTION>
168 This method traps the strictures->VERSION(1) call produced by a use line
169 with a version number on it and does the version check.
171 =head1 COMMUNITY AND SUPPORT
175 irc.perl.org #toolchain
177 (or bug 'mst' in query on there or freenode)
179 =head2 Git repository
181 Gitweb is on http://git.shadowcat.co.uk/ and the clone URL is:
183 git clone git://git.shadowcat.co.uk/p5sagit/strictures.git
187 mst - Matt S. Trout (cpan:MSTROUT) <mst@shadowcat.co.uk>
191 None required yet. Maybe this module is perfect (hahahahaha ...).
195 Copyright (c) 2010 the strictures L</AUTHOR> and L</CONTRIBUTORS>
200 This library is free software and may be distributed under the same terms