NAME
sanity - The ONLY meta pragma you'll ever need!
SYNOPSIS
use sanity;
use sanity 'strictures';
use sanity 'Modern::Perl';
use sanity qw(
strictures -warnings/uninitialized/FATAL
NO:autovivification NO:autovivification/store
PRINT_PRAGMA_HASH
);
use sanity '!0*b^Npow{8T7_yZt<?cT6/?ZCO=Y0LV_Duoc'; # Safer ASCII version
use sanity '¡0Dz鵆㤧뱞⡫瘑빸ን둈댬嚝⠨舁聼䮋'; # Shorter UTF8 version
DESCRIPTION
Modern::Perl? common::sense? no nonsense? use latest?
Everybody has their own opinion on what pragmas and modules are
"required" for every person to use. These opinions turn into "personal
pragmas", so that people don't have to type several use lines of header
in front of every module they write.
Personal opinions and pragmas don't really belong in the CPAN
namespace. (It's CPAN, not Personal PAN. If you want a Personal PAN, go
call Pizza Hut.) But copying code on potentially hundreds of modules
doesn't make sense, either.
That was my mentality when I had a personal opinion of my own. Why
repeat the same problem like everybody else?
This "sanity" module attempts to level the playing field by making it a
customizable personal pragma, allowing you to both reduce the code
needed and still implement all of the modules/pragmas you need.
As an illustration to what it's capable of, this pragma will emulate
all of the other personal pragmas, most of them 100% working exactly
how they do it.
PARAMETERS
Sanity's parameters fall into three types: flags, aliases, and hashes.
(Oh my!)
Flags and Aliases
Flags are single pragma/module declarations, strict/warning flags, or
other items that need flags. Aliases are merely one or more flags,
grouped together to better emulate the pragma/module's functionality.
Let's start off with an example:
# These three statements do the same thing as...
use Modern::Perl;
use sanity 'Modern::Perl';
use sanity qw(strict warnings mro/dfs feature IO::File IO::Handle);
# ...these statements
use strict;
use warnings;
use mro 'dfs';
use feature ':all';
use IO::File;
use IO::Handle;
Basically, it does the same thing as the meta pragma Modern::Perl,
except you actually don't need that module for it to work. While there
is some magic to make sure, say, feature gets loaded with various
versions of Perl, it typically just works using a standard import call.
The strict and warnings flags are combined aliases that enable all of
the warnings that they would do via a standard call.
Negating flags/aliases
You can turn off flags in the statement:
use sanity qw(Modern::Perl -mro/dfs);
This does the same thing as above, except it doesn't import the mro
pragma. You can negate any flag, including combined aliases, as long as
it makes sense. In other words, you need a positive included before you
can negate something.
NO:* flags/aliases
Some pragmas work by using the unimport function, so that the English
makes sense. To keep that syntax, these pragmas are included with a NO:
prefix:
use sanity 'NO:multidimensional';
use sanity 'NO:indirect/FATAL';
This will run the unimport function on these pragmas, even though
sanity was called via the import function (via use).
Perl versions
Sanity also supports Perl versions as a special kind of alias to
specify minimum Perl versions:
# These are all the same:
use v5.10.1;
use sanity 'v5.10.1';
use sanity v5.10.1; # as a VSTRING
use sanity 5.10.1; # works too
# Upgrade the Perl version of your favorite pragma
use sanity qw(NO:nonsense v5.12);
Note that the version must be at least v5.8. This should be fine for
most people. (If I get a ticket requesting support for a Perl version
older than one released in 2002, I will hunt you down and break your
keyboard in half.)
The Default
What does sanity do without any parameters? Why my personal preference,
of course :) It's listed in the meta pragma section of the "LIST OF
FLAGS" below. I detail the reasons behind my choices here.
Hashes
So, there's all of these flags, but unless you're using one of the
combined aliases, typing them all out is usually just as much (or more)
code as the several lines of use statements. Well, they are all flags
so that it fits into a giant bitmap, and that bitmap can be compressed
into a large ASCII (or UTF-8) "number".
This number can be calculated using the flag PRINT_PRAGMA_HASH:
# This is merely the definition of uni::perl
use sanity (qw(
v5.10 strict feature/5.10
), (
map { "warnings/$_/FATAL" } qw(closed threads internal debugging pack substr malloc
unopened portable prototype inplace io pipe unpack regexp deprecated exiting glob
digit printf utf8 layer reserved parenthesis taint closure semicolon)
), qw(
-warnings/exec/FATAL
-warnings/newline/FATAL
utf8
open/utf8
open/std
mro/c3
Carp
), 'PRINT_PRAGMA_HASH');
# Outputs:
# use sanity '!04[D{9Fhfqc-7m738S4HK6B#D5=v{,T$(0)F5i'; # Safer ASCII version
# use sanity '¡05༕ቑ釩腜쥸봱楇䐍퇥熠ᾯ緻褻真堩'; # Shorter UTF8 version
You can use that hash as the output illustrates without having to type
out the entire big set of commands or flags.
Other Meta Pragmas
Have your own set that is too long, and you don't like the ugliness of
the hash? Send me your suggestion and I'll probably add it in.
CAVEATS
'NO:' ne '-'
A NO: flag is NOT the same as negating a flag! You also cannot remove
the NO: from a flag, as it's part of the name of the flag, not a
special modifier.
# These two are NOT the same!
use sanity 'NO:indirect'; # runs indirect->unimport()
use sanity '-indirect'; # Dies, as there is no such flag/alias
# This runs through the strictures alias and runs autovivification->unimport()
use sanity qw(strictures NO:autovivification);
# This runs through the strictures alias WITHOUT running indirect->unimport()
use sanity qw(strictures -NO:indirect);
use sanity '-indirect'; # This isn't what you want...
no sanity 'NO:indirect'; # ...you really meant to do this...
use indirect; # ...but this is better
Special clearing of strict/warnings
Since most people want exactly the strictness and warnings they
specify, sanity will clear these out first before running through the
list.
# This...
use sanity qw(strict -strict/vars);
# ...is the same as this...
no strict;
use strict qw(subs refs);
Also, some special magic is in place to ensure that newer
warnings/features aren't fatal to older Perls. See
https://rt.perl.org/rt3/Ticket/Display.html?id=112920.
"Author" pragmas
Certain pragmas really only exist to make sure the code is designed
right. These pragmas are deemed "optional" by sanity. In other words,
if the user doesn't have them, it will just silently ignore them and
move on. If sanity thinks you're an author/coder of the module itself
(.git/svn/$ENV checks), it will give you a warning that they are
missing, but move on.
The following modules don't "instadie". Modules that fall under this
list don't change the nature of how Perl works, or would let you do
something that would normally fatally error.
overloading
autovivification
indirect
multidimensional
bareword::filehandles
criticism
# (autovivification probably shouldn't be here, since it actually
# prevents autoviv, but it's generally used as an author tool.)
This feature was borrowed from strictures and tweaked.
LIST OF FLAGS
Emulation of "meta pragmas"
ex::caution:
strict
warnings
NO:crap: # Same as above
shit: # Same as above
latest:
strict
warnings
feature
sane:
strict
warnings
feature
utf8
NO:nonsense:
strict
warnings
true
namespace::autoclean
Modern::Perl:
strict
warnings
mro 'dfs'
feature
IO::File
IO::Handle
strictures: (without the 5.8.4 checks; that crap is old)
v5.8.4 (forced, to make sure things work)
strict
warnings FATAL => 'all'
no indirect 'fatal'
no multidimensional
no bareword::filehandles
common::sense: (without the "memory usage" BS)
utf8
strict qw(subs vars)
feature qw(say state switch)
no warnings
warnings FATAL => qw(closed threads internal debugging pack malloc portable prototype
inplace io pipe unpack deprecated glob digit printf
layer reserved taint closure semicolon)
no warnings qw(exec newline unopened);
uni::perl: (ditto)
v5.10
strict
feature qw(say state switch)
no warnings
warnings qw(FATAL closed threads internal debugging pack substr malloc
unopened portable prototype inplace io pipe unpack regexp
deprecated exiting glob digit printf utf8 layer
reserved parenthesis taint closure semicolon)
no warnings qw(exec newline)
utf8
open (:utf8 :std)
mro 'c3'
Carp
sanity:
v5.10.1
utf8
open (:utf8 :std)
mro 'c3'
strict qw(subs vars)
no strict 'refs'
warnings FATAL => 'all'
no warnings qw(uninitialized experimental::smartmatch)
feature '5.10'
no autovivification qw(fetch exists delete store strict)
no indirect 'fatal'
no multidimensional
perl5i::0 / 1 / 2 / latest:
[the real module] (the pragma is too insane to try to duplicate here)
Acme::Very::Modern::Perl: (a joke, but it's still here all the same)
strict
warnings
mro 'c3'
feature
IO::File
IO::Handle
utf8
open (:utf8 :std)
no warnings
warnings FATAL => qw(closed threads internal debugging pack malloc portable prototype
inplace io pipe unpack deprecated glob digit printf
layer reserved taint closure semicolon)
no warnings qw(exec newline unopened);
perl5i::latest
Toolkit
Carp
Other flags/aliases
strict/* => strict '[whatever]' # supports all flags
strict => strict qw(refs subs vars)
# other "hints"
integer
locale
bytes
re/taint
re/eval
filetest
utf8
NO:overloading
warnings/* => warnings NONFATAL => '[whatever]' # supports all flags, multi or not
warnings/*/FATAL => warnings FATAL => '[whatever]' # supports all flags; FATAL trumps NONFATAL
warnings => warnings NONFATAL => 'all'
warnings/FATAL => warnings FATAL => 'all'
feature/* => feature '[whatever]' # supports all flags
feature/5.## => # similar to feature enabling via 'use v5.##'; major version only
feature/5.9.5 => # also exists, just like feature/5.10
feature => feature ':all' # not exactly, but in spirit
# Perl versions, described above
v5.##.##
# autodie
autodie/* => autodie ':[whatever]' # supports all _category_ flags, like all, io, shm, etc.
# (Will expand if requested, but I don't want to waste
# all of that bit space right now.)
autodie => autodie ':default'
# other CORE pragmas
bigint
bignum
bigrat
charnames
charnames/short
charnames/full
encoding::warnings
encoding::warnings/FATAL
mro/dfs # default for 'mro'
mro/c3
open/*
# namespace cleaners
namespace::clean # included last; adds -except => 'meta'
namespace::functions # included last
namespace::autoclean
namespace::sweep
# others
NO:autovivification/*
NO:autovivification => no autovivification qw(fetch exists delete)
criticism/*
criticism => criticism 'gentle'
experimental/*
perl5i::0
perl5i::1
perl5i::2
perl5i::3
perl5i::latest
NO:indirect
NO:indirect/global
NO:indirect/fatal
NO:multidimensional
NO:bareword::filehandles
subs::auto
utf8::all
IO::File
IO::Handle
IO::All
Carp
vendorlib
true
autolocale
Toolkit
Function::Parameters
Function::Parameters/strict
Switch::Plain
Quote::Code
Am I missing something? Let me know.
TODO
Actually need to write sanity::sanity POD.
AVAILABILITY
The project homepage is https://github.com/SineSwiper/sanity.
The latest version of this module is available from the Comprehensive
Perl Archive Network (CPAN). Visit http://www.perl.com/CPAN/ to find a
CPAN site near you, or see https://metacpan.org/module/sanity/.
SUPPORT
Internet Relay Chat
You can get live help by using IRC ( Internet Relay Chat ). If you
don't know what IRC is, please read this excellent guide:
http://en.wikipedia.org/wiki/Internet_Relay_Chat. Please be courteous
and patient when talking to us, as we might be busy or sleeping! You
can join those networks/channels and get help:
* irc.perl.org
You can connect to the server at 'irc.perl.org' and talk to this
person for help: SineSwiper.
Bugs / Feature Requests
Please report any bugs or feature requests via
https://github.com/SineSwiper/sanity/issues.
AUTHOR
Brendan Byrd <BBYRD@CPAN.org>
CONTRIBUTOR
Graham Knop <haarg@haarg.org>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2014 by Brendan Byrd.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)