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MDOM::Token::Whitespace - Tokens representing ordinary white space


  isa MDOM::Token
      isa MDOM::Element


As a full "round-trip" parser, MDOM records every last byte in a file and ensure that it is included in the MDOM::Document object.

This even includes whitespace. In fact, Perl documents are seen as "floating in a sea of whitespace", and thus any document will contain vast quantities of MDOM::Token::Whitespace objects.

For the most part, you shouldn't notice them. Or at least, you shouldn't have to notice them.

This means doing things like consistently using the "S for significant" series of MDOM::Node and MDOM::Element methods to do things.

If you want the nth child element, you should be using schild rather than child, and likewise snext_sibling, sprevious_sibling, and so on and so forth.


Again, for the most part you should really not need to do anything very significant with whitespace.

But there are a couple of convenience methods provided, beyond those provided by the parent MDOM::Token and MDOM::Element classes.


Because MDOM sees documents as sitting on a sort of substrate made of whitespace, there are a couple of corner cases that get particularly nasty if they don't find whitespace in certain places.

Imagine walking down the beach to go into the ocean, and then quite unexpectedly falling off the side of the planet. Well it's somewhat equivalent to that, including the whole screaming death bit.

The null method is a convenience provided to get some internals out of some of these corner cases.

Specifically it create a whitespace token that represents nothing, or at least the null string ''. It's a handy way to have some "whitespace" right where you need it, without having to have any actual characters.


tidy is a convenience method for removing unneeded whitespace.

Specifically, it removes any whitespace from the end of a line.

Note that this doesn't include POD, where you may well need to keep certain types of whitespace. The entire POD chunk lives in its own MDOM::Token::Pod object.


See the support section in the main module.


Adam Kennedy <adamk@cpan.org>


Copyright 2001 - 2006 Adam Kennedy.



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