PPI::Token::Comment(3) A comment in Perl source code


  isa PPI::Token
      isa PPI::Element


# This is a PPI::Token::Comment

print "Hello World!"; # So it this

$string =~ s/ foo # This, unfortunately, is not :(


In PPI, comments are represented by "PPI::Token::Comment" objects.

These come in two flavours, line comment and inline comments.

A "line comment" is a comment that stands on its own line. These comments hold their own newline and whitespace (both leading and trailing) as part of the one "PPI::Token::Comment" object.

An inline comment is a comment that appears after some code, and continues to the end of the line. This does not include whitespace, and the terminating newlines is considered a separate PPI::Token::Whitespace token.

This is largely a convenience, simplifying a lot of normal code relating to the common things people do with comments.

Most commonly, it means when you "prune" or "delete" a comment, a line comment disappears taking the entire line with it, and an inline comment is removed from the inside of the line, allowing the newline to drop back onto the end of the code, as you would expect.

It also means you can move comments around in blocks much more easily.

For now, this is a suitably handy way to do things. However, I do reserve the right to change my mind on this one if it gets dangerously anachronistic somewhere down the line.


Only very limited methods are available, beyond those provided by our parent PPI::Token and PPI::Element classes.


The "line" accessor returns true if the "PPI::Token::Comment" is a line comment, or false if it is an inline comment.


See the support section in the main module.


Adam Kennedy <[email protected]>


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.