PPI::Statement::Sub(3)User Contributed Perl DocumentatioPPI::Statement::Sub(3)NAME
PPI::Statement::Sub - Subroutine declaration
INHERITANCE
PPI::Statement::Sub
isa PPI::Statement
isa PPI::Node
isa PPI::Element
DESCRIPTION
Except for the special BEGIN, CHECK, UNITCHECK, 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.
METHODS
"PPI::Statement::Sub" has a number of methods in addition to the
standard PPI::Statement, PPI::Node and PPI::Element methods.
name
The "name" method returns the name of the subroutine being declared.
In some rare cases such as a naked "sub" at the end of the file, this
may return false.
prototype
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.
Returns false if the subroutine does not define a prototype
block
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.
Returns false if this is a forward declaration, or otherwise does not
have a code block.
forward
The "forward" method returns true if the subroutine declaration is a
forward declaration.
That is, it returns false if the subroutine has a code block, or true
if it does not.
reserved
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.
Note that in the case of BEGIN, CHECK, UNITCHECK, 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.
TO DO
- Write unit tests for this package
SUPPORT
See the support section in the main module.
AUTHOR
Adam Kennedy <adamk@cpan.org>
COPYRIGHT
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.
perl v5.12.5 2011-02-25 PPI::Statement::Sub(3)
