[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: XML Memory Requirements (was Re: Feeling good about SML)
Tim Bray wrote: > > The performance is good enough that in Lark, the limiting factor was > my lousy input buffering, not the character class checking; and Lark > was always in the top half of the performance table. -Tim I think that's pretty typical. I've profiled several parsers by now, and character class checking hasn't been a major issue ... usually one or two percentage points CPU time for testing whether a character works in a name (first/rest) or not. The technique I used in Sun's parser may be good for many folk to steal. It involves using the standard Character.getType() method (which has access to lots of Unicode tables, and in recent JVMs uses native code to quickly access them) and then filtering that output by the rules in the XML spec. - Dave xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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