Dmitry Astapov wrote:
JE> and the Hugs interpreter just isn't designed to work with large JE> inputs. Try compiling the program instead. well, ghc-5.02 seems to dislike something inside XmlLib.hs - it could not find interface defs file for modules IOExts .. I plan to look more deeply into it though.
I got it to compile with ghc 5.02 using ghc --make -package lang translate.hs The compiled version succeeds, but on a large document it uses a *lot* of memory and starts paging pretty badly.
JE> Try the identity transform 'main = processXmlWith keep' on your sample JE> document and see if that runs out of heap too. If so, there's not JE> much you can do short of replacing the HaXml parser.
I tried this as well, modifying your program to use an XML parser I wrote a while ago that has better laziness properties than the HaXML one. Alas, my parser also suffers from a space leak under Hugs, so this only deferred the problem. Under ghc/ghci, though, it has modest memory requirements and runs without paging. --Joe English jenglish@flightlab.com