[CEDET-devel] bison->wisent
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From: Eric M. L. <er...@si...> - 2002-09-11 01:09:28
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Howdy, I checked in the file bison->wisent.el which has my simple regexp translator in it. It seems to do an ok job. Unfortunately, I can't test that assumption at the moment because the resultant 3000 line file hangs my emacs when wisent kicks off a parse. I used `toggle-debug-on-quit' and discovered that the lexer is actually slurping up lots of time and not showing a progress bar. I waited over 60 seconds before I got bored and killed it. This caused me to go snoop some more in semantic-grammar.el with an eye on the lexical analyzer. I have several questions about it: * Why does semantic's grammar need such a complicated number regexp? * Why does it need it's own symbol matcher? Why not use the symbol-keyword matcher? * Why is the comment-start-skip so complicated? This is used in the lexer, and that complexity probably slows things down. Perhaps semantic-lex-comment-regex could be specified with something simpler? After wondering these things, I discovered the real problem. The lexer actually had a progress hang as soon as it hit the valid bison/yacc rule: .hush_warning: ;; action ; or any reference to .hush_warning. This lead me to wonder about `wisent-lex-punctuation' which just sort of confused me when I tried to understand its purpose. In general, however, would it make sense to move this and others into semantic-grammar.el or semantic-lex.el instead of wisent-bovine.el? I know you explained some of these files' purpose in the past but I don't remember. Perhaps we should check in a MANIFEST file to help explain to each other. Anyway, I've got some html hacking to do, so I'll examine this more on another day. Have fun Eric -- Eric Ludlam: za...@gn..., er...@si... Home: http://www.ludlam.net Siege: www.siege-engine.com Emacs: http://cedet.sourceforge.net GNU: www.gnu.org |