NAME
    Perl::Critic::Policy::logicLAB::RequireVersionFormat - assert version
    number formats

AFFILIATION
    This policy is part of Perl::Critic::logicLAB distribution.

VERSION
    This documentation describes version 0.05

DESCRIPTION
    This policy asserts that a specified version number conforms to a
    specified format.

    The default format is the defacto format used on CPAN. X.X and X.X_X
    where X is an arbitrary integer, in the code this is expressed using the
    following regular expression:

        \A\d+\.\d+(_\d+)?\z

    The following example lines would adhere to this format:

    *   0.01, a regular release

    *   0.01_1, a developer release

    Scope, quoting and representation does not matter. If the version
    specification is lazy please see "EXCEPTIONS".

    The following example lines would not adhere to this format and would
    result in a violation.

    *   our ($VERSION) = '$Revision$' =~ m{ \$Revision: \s+ (\S+) }x;

    *   $VERSION = '0.0.1';

    *   $MyPackage::VERSION = 1.0.61;

    *   use version; our $VERSION = qv(1.0.611);

    *   $VERSION = "0.01a";

    In addition to the above examples, there are variations in quoting etc.
    all would cause a violation.

  EXCEPTIONS
    In addition there are some special cases, were we simply ignore the
    version, since we cannot assert it in a reasonable manner.

    *   our $VERSION = $Other::VERSION;

        We hope that $Other::VERSION conforms where defined, so we ignore
        for now.

CONFIGURATION AND ENVIRONMENT
  strict_quotes
    Strict quotes is off by default.

    Strict quotes enforces that you version number must be quoted, like so:
    '0.01' and "0.01". 0.01 would in this case cause a violation. This would
    also go for any additional formats you could configure as valid using
    the "formats" parameter below.

        [logicLAB::RequireVersionFormat]
        strict_quotes = 1

  ignore_quotes
    Ignore quotes is on by default.

    0.01, '0.01' and "0.01" would be interpreted as the same.

    Disabling ignore quotes, would mean that: '0.01' and "0.01" would
    violate the default format since quotes are not specifed as part of the
    pattern. This would also go for any additional formats you could
    configure as valid using the "formats" parameter below.

        [logicLAB::RequireVersionFormat]
        ignore_quotes = 0

  formats
    If no formats are specified, the policy only enforces the default format
    mentioned in "DESCRIPTION" in combination with the above two
    configuration parameters of course.

        [logicLAB::RequireVersionFormat]
        formats = \A\d+\.\d+(_\d+)?\z || \Av\d+\.\d+\.\d+\z

DEPENDENCIES AND REQUIREMENTS
    *   Perl::Critic

    *   Perl::Critic::Utils

    *   Readonly

    *   Test::More

    *   Test::Perl::Critic

INCOMPATIBILITIES
    This distribution has no known incompatibilities.

BUGS AND LIMITATIONS
    I think it would be a good idea to ignore this particular version string
    and versions thereof:

        our ($VERSION) = '$Revision$' =~ m{ \$Revision: \s+ (\S+) }x;

    I am however still undecided.

BUG REPORTING
    Please use Requets Tracker for bug reporting:

            http://rt.cpan.org/NoAuth/Bugs.html?Dist=Perl-Critic-logicLAB-Prohibit-RequireVersionFormat

TEST AND QUALITY
    The following policies have been disabled for this distribution

    *   Perl::Crititc::Policy::ValuesAndExpressions::ProhibitConstantPragma

    *   Perl::Crititc::Policy::NamingConventions::Capitalization

  TEST COVERAGE
        ---------------------------- ------ ------ ------ ------ ------ ------ ------
        File                           stmt   bran   cond    sub    pod   time  total
        ---------------------------- ------ ------ ------ ------ ------ ------ ------
        ...B/RequireVersionFormat.pm   97.9   75.0   68.2  100.0  100.0  100.0   89.8
        Total                          97.9   75.0   68.2  100.0  100.0  100.0   89.8
        ---------------------------- ------ ------ ------ ------ ------ ------ ------

TODO
    *   I would like to integrate the features of this policy into
        Perl::Critic::Policy::Modules::RequireVersionVar, but I was aiming
        for a proof of concept first - so this planned patch is still in the
        pipeline.

    *   Address the limitation listed in "BUGS AND LIMITATIONS".

SEE ALSO
    *   <http://logiclab.jira.com/wiki/display/OPEN/Versioning>

    *   version

    *   <http://search.cpan.org/dist/Perl-Critic/lib/Perl/Critic/Policy/Modu
        les/RequireVersionVar.pm>

AUTHOR
    *   Jonas B. Nielsen, jonasbn "<jonasbn@cpan.org>"

LICENSE AND COPYRIGHT
    Copyright (c) 2009-2014 Jonas B. Nielsen. All rights reserved.

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.