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24 Mar 2021 03:09:35 UTC
- Distribution: Perl-Critic
- Module version: 1.140
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Bus factor: 2- 90.11% Coverage
- License: perl_5
- Perl: v5.6.1
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NAME
Perl::Critic::Policy::Objects::ProhibitIndirectSyntax - Prohibit indirect object call syntax.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Indirect object syntax is commonly used in other object-oriented languages for instantiating objects. Perl allows this, but to say that it supports it may be going too far. Instead of writing
my $foo = new Foo;
it is preferable to write
my $foo = Foo->new;
The problem is that Perl needs to make a number of assumptions at compile time to disambiguate the first form, so it tends to be fragile and to produce hard-to-track-down bugs.
CONFIGURATION
Indirect object syntax is also hard for Perl::Critic to disambiguate, so this policy only checks certain subroutine calls. The names of the subroutines can be configured using the
forbid
configuration option:[Objects::ProhibitIndirectSyntax] forbid = create destroy
The
new
subroutine is configured by default; any additionalforbid
values are in addition tonew
.CAVEATS
The general situation can not be handled via static analysis.
SEE ALSO
Perl::Critic::Policy::Dynamic::NoIndirect and indirect both do a better job with this, but they require that you compile/execute your code.
AUTHOR
Thomas R. Wyant, III wyant at cpan dot org
COPYRIGHT
Copyright (c) 2009-2011 Tom Wyant.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.
Module Install Instructions
To install Perl::Critic, copy and paste the appropriate command in to your terminal.
cpanm Perl::Critic
perl -MCPAN -e shell install Perl::Critic
For more information on module installation, please visit the detailed CPAN module installation guide.