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.IX Title "Perl::Critic::Policy::Objects::ProhibitIndirectSyntax 3pm"
.TH Perl::Critic::Policy::Objects::ProhibitIndirectSyntax 3pm 2023-07-26 "perl v5.38.0" "User Contributed Perl Documentation"
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.SH NAME
Perl::Critic::Policy::Objects::ProhibitIndirectSyntax \- Prohibit indirect object call syntax.
.SH AFFILIATION
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH DESCRIPTION
.IX Header "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
.PP
.Vb 1
\&    my $foo = new Foo;
.Ve
.PP
it is preferable to write
.PP
.Vb 1
\&    my $foo = Foo\->new;
.Ve
.PP
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.
.SH CONFIGURATION
.IX Header "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 \f(CW\*(C`forbid\*(C'\fR configuration option:
.PP
.Vb 2
\&    [Objects::ProhibitIndirectSyntax]
\&    forbid = create destroy
.Ve
.PP
The \f(CW\*(C`new\*(C'\fR subroutine is configured by default; any additional \f(CW\*(C`forbid\*(C'\fR
values are in addition to \f(CW\*(C`new\*(C'\fR.
.SH CAVEATS
.IX Header "CAVEATS"
The general situation can not be handled via static analysis.
.SH "SEE ALSO"
.IX Header "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.
.SH AUTHOR
.IX Header "AUTHOR"
Thomas R. Wyant, III \fIwyant at cpan dot org\fR
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (c) 2009\-2011 Tom Wyant.
.PP
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.