PPI::Statement::Package(3) User Contributed Perl Documentation PPI::Statement::Package(3)

PPI::Statement::Package - A package statement

  PPI::Statement::Package
  isa PPI::Statement
      isa PPI::Node
          isa PPI::Element

Most PPI::Statement subclasses are assigned based on the value of the first token or word found in the statement. When PPI encounters a statement starting with 'package', it converts it to a "PPI::Statement::Package" object.

When working with package statements, please remember that packages only exist within their scope, and proper support for scoping has yet to be completed in PPI.

However, if the immediate parent of the package statement is the top level PPI::Document object, then it can be considered to define everything found until the next top-level "file scoped" package statement.

A file may, however, contain nested temporary package, in which case you are mostly on your own :)

"PPI::Statement::Package" has a number of methods in addition to the standard PPI::Statement, PPI::Node and PPI::Element methods.

Most package declarations are simple, and just look something like

  package Foo::Bar;

The "namespace" method returns the name of the declared package, in the above case 'Foo::Bar'. It returns this exactly as written and does not attempt to clean up or resolve things like ::Foo to main::Foo.

If the package statement is done any different way, it returns false.

Some package declarations may include a version:

  package Foo::Bar 1.23;
  package Baz v1.23;

The "version" method returns the stringified version as seen in the document (if any), otherwise the empty string.

Regardless of whether it is named or not, the "file_scoped" method will test to see if the package declaration is a top level "file scoped" statement or not, based on its location.

In general, returns true if it is a "file scoped" package declaration with an immediate parent of the top level Document, or false if not.

Note that if the PPI DOM tree does not have a PPI::Document object at as the root element, this will return false. Likewise, it will also return false if the root element is a PPI::Document::Fragment, as a fragment of a file does not represent a scope.

See the support section in the main module.

Adam Kennedy <adamk@cpan.org>

Copyright 2001 - 2011 Adam Kennedy.

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

The full text of the license can be found in the LICENSE file included with this module.

2019-07-09 perl v5.34.0