Ha! I finally managed to use any kinds of tokens in Happy parsers ...
Will post the code soon.
---
Ömer Sinan Ağacan
http://osa1.net
2014-03-09 13:44 GMT+02:00 Mateusz Kowalczyk
On 09/03/14 11:15, Ömer Sinan Ağacan wrote:
I think GHC uses alex+happy in very different way than explained in the docs.. For example it doesn't use "posn", "monadUserState" etc. wrappers as explained in alex documentations. I also can't figure out how does it keep track of token locations.. I guess It's just too complicated for me to understand without spending several hours.
--- Ömer Sinan Ağacan http://osa1.net
It doesn't use the wrappers provided, it instead uses its own data structures to do what the wrappers let you do and more. You can look for the data types defined in those modules to try and shed some light on how it's all done. I did mention it's not the most lightweight example ;)
-- Mateusz K.