PPI::Statement::Sub - Subroutine declaration
PPI::Statement::Sub isa PPI::Statement isa PPI::Node isa PPI::Element
Except for the special BEGIN, CHECK, INIT, and END subroutines (which are part of PPI::Statement::Scheduled) all subroutine declarations are lexed as a PPI::Statement::Sub object.
Primarily, this means all of the various sub foo {} statements, but also forward declarations such as sub foo; or sub foo($);. It does not include anonymous subroutines, as these are merely part of a normal statement.
sub foo {}
sub foo;
sub foo($);
PPI::Statement::Sub has a number of methods in addition to the standard PPI::Statement, PPI::Node and PPI::Element methods.
PPI::Statement::Sub
The name method returns the name of the subroutine being declared.
name
In some rare cases such as a naked sub at the end of the file, this may return false.
sub
If it has one, the prototype method returns the subroutine's prototype. It is returned in the same format as "prototype" in PPI::Token::Prototype, cleaned and removed from its brackets.
prototype
Returns false if the subroutine does not define a prototype
With its name and implementation shared with PPI::Statement::Scheduled, the block method finds and returns the actual Structure object of the code block for this subroutine.
block
Returns false if this is a forward declaration, or otherwise does not have a code block.
The forward method returns true if the subroutine declaration is a forward declaration.
forward
That is, it returns false if the subroutine has a code block, or true if it does not.
The reserved method provides a convenience method for checking to see if this is a special reserved subroutine. It does not check against any particular list of reserved sub names, but just returns true if the name is all uppercase, as defined in perlsub.
reserved
Note that in the case of BEGIN, CHECK, INIT and END, these will be defined as PPI::Statement::Scheduled objects, not subroutines.
Returns true if it is a special reserved subroutine, or false if not.
- Write unit tests for this package
See the support section in the main module
Adam Kennedy, http://ali.as/, cpan@ali.as
Copyright (c) 2001 - 2005 Adam Kennedy. All rights reserved.
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.
To install PPI, copy and paste the appropriate command in to your terminal.
cpanm
cpanm PPI
CPAN shell
perl -MCPAN -e shell install PPI
For more information on module installation, please visit the detailed CPAN module installation guide.