Hi.
I have completed a draft of a CSS lexer, using Alex.
http://hg.mperillo.ath.cx/haskell/webtools/file/tip/src/CSS/Lexer.x
The lexer use the posn wrapper.
Now I'm starting to write the parser with Happy, however for the final
product I would like to:
1) Be able to do I/O in the lexer, for stylesheets inclusion
(@import rule)
2) be able to keep state in the parser (or lexer?), for character
transcoding (@charset rule)
This should be possible with Happy (and there are some example), however
I don't find examples that make use of a lexer written with Alex.
Should I write a lexer using only the Alex basic interface (without
wrappers)?
Thanks Manlio Perillo
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