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authorArseny Kapoulkine <arseny.kapoulkine@gmail.com>2014-10-05 04:20:47 +0000
committerArseny Kapoulkine <arseny.kapoulkine@gmail.com>2014-10-05 04:20:47 +0000
commita3b23751aeb6c9e84829010e20b44545ef4da9ff (patch)
tree40ea920ba064d1f0ddcc8e3fe25c8d159c2f5b61 /Jamrules.jam
parente66356715c8ab207350bc30904b30c4de4515506 (diff)
Optimize XPath document order comparator
Node ancestor search now terminates early if ancestor is found before the document root (only happens if nodes were at the same depth). Sibling search now steps synchronously for left and right nodes to avoid worst-case performance when we go in the wrong direction and have to scan a big list (this comes at the cost of average performance since in the best case we do 2x more operations). Node comparison is now done using node pointers to elide some null comparisons since the structure of the search guarantees that they are handled properly. All of the above results in ~2x faster document order comparison on complex documents. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1050 99668b35-9821-0410-8761-19e4c4f06640
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