You don't want to use this class. Really. Use XPath, which is a wrapper for this class. Believe me. You don't want to poke around in here. There is strange, dark magic at work in this code. Beware. Go back! Go back while you still can!


Constants


Expr takes a stack of path elements and a set of nodes (either a Parent or an Array and returns an Array of matching nodes

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Class Methods


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Instance Methods


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FIXME The next two methods are BAD MOJO! This is my achilles heel. If anybody thinks of a better way of doing this, be my guest. This really sucks, but it is a wonder it works at all. ########################################################

Reorders an array of nodes so that they are in document order It tries to do this efficiently.

FIXME: I need to get rid of this, but the issue is that most of the XPath interpreter functions as a filter, which means that we lose context going in and out of function calls. If I knew what the index of the nodes was, I wouldn't have to do this. Maybe add a document IDX for each node? Problems with mutable documents. Or, rewrite everything.

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Performs a depth-first (document order) XPath search, and returns the first match. This is the fastest, lightest way to return a single result.

FIXME: This method is incomplete!

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Returns a String namespace for a node, given a prefix The rules are:

1. Use the supplied namespace mapping first.
2. If no mapping was supplied, use the context node to look up the namespace
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Builds a nodeset of all of the preceding nodes of the supplied node, in reverse document order

preceding

includes every element in the document that precedes this node,

except for ancestors

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