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Perl::PrereqScanner

NAME

Perl::PrereqScanner − a tool to scan your Perl code for its prerequisites

VERSION

version 1.014

SYNOPSIS

  use Perl::PrereqScanner;
  my $scanner = Perl::PrereqScanner−>new;
  my $prereqs = $scanner−>scan_ppi_document( $ppi_doc );
  my $prereqs = $scanner−>scan_file( $file_path );
  my $prereqs = $scanner−>scan_string( $perl_code );

DESCRIPTION

The scanner will extract loosely your distribution prerequisites from your files.

The extraction may not be perfect but tries to do its best. It will currently find the following prereqs:

plain lines beginning with "use" or "require" in your perl modules and scripts, including minimum perl version

regular inheritance declared with the "base" and "parent" pragmata

Moose inheritance declared with the "extends" keyword

Moose roles included with the "with" keyword

OO namespace aliasing using the "aliased" module

Scanner Plugins
Perl::PrereqScanner works by running a series of scanners over a PPI::Document representing the code to scan. By default the "Perl5", "Moose", "TestMore", " POE ", and "Aliased" scanners are run. You can supply your own scanners when constructing your PrereqScanner:

  # Us only the Perl5 scanner:
  my $scanner = Perl::PrereqScanner−>new({ scanners => [ qw(Perl5) ] });
  # Use any stock scanners, plus Example:
  my $scanner = Perl::PrereqScanner−>new({ extra_scanners => [ qw(Example) ] });

METHODS

scan_string

  my $prereqs = $scanner−>scan_string( $perl_code );

Given a string containing Perl source code, this method returns a CPAN::Meta::Requirements object describing the modules it requires.

This method will throw an exception if PPI fails to parse the code.

scan_file

  my $prereqs = $scanner−>scan_file( $path );

Given a file path to a Perl document, this method returns a CPAN::Meta::Requirements object describing the modules it requires.

This method will throw an exception if PPI fails to parse the code.

scan_ppi_document

  my $prereqs = $scanner−>scan_ppi_document( $ppi_doc );

Given a PPI::Document, this method returns a CPAN::Meta::Requirements object describing the modules it requires.

AUTHORS

Jerome Quelin

Ricardo Signes <rjbs AT cpan DOT org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2009 by Jerome Quelin.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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