NAME
Perl::Phase - Check if you are currently in compile time or run time
VERSION
This document describes Perl::Phase version 0.03
SYNOPSIS
use Perl::Phase ();
sub init_data {
Perl::Phase::assert_is_run_time(); # so we don’t forever bake the data in if this is perlcc’d
…
}DESCRIPTION
Some code should only run at runtime some only at compile time.
This functions let you check (boolean) or assert (die) either.
INTERFACE
None of these functions take any arguments.
Perl::Phase::is_compile_time()
Returns true if executed at compile time, false if executed at run time.
Perl::Phase::assert_is_compile_time()
Dies if executed at run time, otherwise returns true.
Perl::Phase::is_run_time()
Returns true if executed at run time, false if executed at compile time.
Perl::Phase::assert_is_run_time()
Dies if executed at compile time, otherwise returns true.
Perl::Phase::current_phase()
Returns perl’s internal numeric id of the phase perl is currently in.
Much faster than string comparing ${^GLOBAL_PHASE} in a string comparison.
CONSTANTS
These are perl’s internal numeric id of the ${^GLOBAL_PHASE} in the name.
PERL_PHASE_CONSTRUCT
PERL_PHASE_START
PERL_PHASE_CHECK
PERL_PHASE_INIT
PERL_PHASE_RUN
PERL_PHASE_END
PERL_PHASE_DESTRUCT
If you care about the exact stage you are in …
This module aims to give you the fastest and smallest way to determine if you are in run time or compile time.
If you care about the exact stage you are in you have some options:
Look at ${^GLOBAL_PHASE}
This module, as well as Check::GlobalPhase, use XS to do this logic via perl’s internal numeric id which is much faster.
Note that ${^GLOBAL_PHASE} only works on perl 5.14 and newer or unless you use a module that sets it on earlier versions like Devel::GlobalPhase.
use Check::GlobalPhase’s is_global_phase_<lc phase name()> functions
Most of the time we really only care if we are in compile time or run time so this module does not implement these.
Use current_phase() and constants
if (Perl::Phase::current_phase() == Perl::Phase::PERL_PHASE_INIT ) { … we are in INIT … }
if (Perl::Phase::current_phase() & (Perl::Phase::PERL_PHASE_INIT | Perl::Phase::PERL_PHASE_RUN) ) { … we are either in INIT or RUN … }DIAGNOSTICS
Assert can have two types of die messages depending on the caller information:
%s() called at (run|compile) time at %s line %nThis code should not be executed at (run|compile) time
CONFIGURATION AND ENVIRONMENT
None.
DEPENDENCIES
INCOMPATIBILITIES AND LIMITATIONS
None reported.
BUGS AND FEATURES
Please report any bugs or feature requests (and a pull request for bonus points) through the issue tracker at https://github.com/drmuey/p5-Perl-Phase/issues.
AUTHOR
Daniel Muey <http://drmuey.com/cpan_contact.pl>
LICENCE AND COPYRIGHT
Copyright (c) 2019, Daniel Muey <http://drmuey.com/cpan_contact.pl>. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
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