VERSION

version 1.023

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 );
my $prereqs = $scanner->scan_module( $module_name );

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.

Warning! It isn't entirely clear whether PPI prefers to receive strings as octet strings or character strings. For now, my advice is to pass octet strings.

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.

scan_module

  my $prereqs = $scanner->scan_module( $module_name );

Given the name of a module, eg 'PPI::Document', this method returns a CPAN::Meta::Requirements object describing the modules it requires.

AUTHORS

• Jerome Quelin
• Ricardo Signes <[email protected]>

CONTRIBUTORS

• bowtie <[email protected]>
• celogeek <[email protected]>
• Christopher J. Madsen <[email protected]>
• David Golden <[email protected]>
• David Steinbrunner <[email protected]>
• Ed J <[email protected]>
• Florian Ragwitz <[email protected]>
• Jakob Voss <[email protected]>
• Jerome Quelin <[email protected]>
• Jerome Quelin <[email protected]>
• John SJ Anderson <[email protected]>
• Karen Etheridge <[email protected]>
• Mark Gardner <[email protected]>
• Neil Bowers <[email protected]>
• Randy Stauner <[email protected]>
• Tina Mueller <[email protected]>
• Vyacheslav Matjukhin <[email protected]>

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.