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.\" ========================================================================
.\"
.IX Title "PPIx::Regexp::Util 3pm"
.TH PPIx::Regexp::Util 3pm "2019-04-03" "perl v5.28.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
PPIx::Regexp::Util \- Utility functions for PPIx::Regexp;
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 6
\& use PPIx::Regexp::Util qw{ _\|_instance };
\&     .
\&     .
\&     .
\& _\|_instance( $foo, \*(AqBar\*(Aq )
\&     or die \*(Aq$foo is not a Bar\*(Aq;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module contains utility functions for PPIx::Regexp
which it is convenient to centralize.
.PP
The contents of this module are \fBprivate\fR to the
PPIx::Regexp package. This documentation is provided for
the author's convenience only. Anything in this module is subject to
change without notice. \fICaveat user.\fR
.PP
This module exports nothing by default.
.SH "SUBROUTINES"
.IX Header "SUBROUTINES"
This module can export the following subroutines:
.SS "_\|_instance"
.IX Subsection "__instance"
.Vb 2
\& _\|_instance( $foo, \*(AqBar\*(Aq )
\&     and print \*(Aq$foo isa Bar\*(Aq, "\en";
.Ve
.PP
This subroutine returns true if its first argument is an instance of the
class specified by its second argument. Unlike \f(CW\*(C`UNIVERSAL::isa\*(C'\fR, the
result is always false unless the first argument is a reference.
.SS "_\|_is_ppi_regexp_element"
.IX Subsection "__is_ppi_regexp_element"
.Vb 2
\& _\|_is_ppi_regexp_element( $elem )
\&   and print "$elem is a regexp of some sort\en";
.Ve
.PP
This subroutine takes as its argument a PPI::Element. It
returns a true value if the argument represents a regular expression of
some sort, and a false value otherwise.
.SS "_\|_ns_can"
.IX Subsection "__ns_can"
This method is analogous to \f(CW\*(C`can()\*(C'\fR, but returns a reference to the
code only if it is actually implemented by the invoking name space.
.SS "_\|_to_ordinal_en"
.IX Subsection "__to_ordinal_en"
This subroutine takes as its argument an integer and returns a string
representing its ordinal in English. For example
.PP
.Vb 2
\& say _\|_to_ordinal_en( 17 );
\& # 17th
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Params::Util, which I recommend, but in the case of
\&\f(CW\*(C`PPIx::Regexp\*(C'\fR I did not want to introduce a dependency on an \s-1XS\s0 module
when all I really wanted was the function of that module's
\&\f(CW\*(C`_INSTANCE()\*(C'\fR subroutine.
.SH "SUPPORT"
.IX Header "SUPPORT"
Support is by the author. Please file bug reports at
<http://rt.cpan.org>, or in electronic mail to the author.
.SH "AUTHOR"
.IX Header "AUTHOR"
Thomas R. Wyant, \s-1III\s0 \fIwyant at cpan dot org\fR
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (C) 2010\-2019 by Thomas R. Wyant, \s-1III\s0
.PP
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl 5.10.0. For more details, see the full text
of the licenses in the directory \s-1LICENSES.\s0
.PP
This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.