Hi all,
With the following module:
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module Main (main) where
import Language.Haskell.THSyntax
import Text.PrettyPrint.HughesPJ
main :: IO ()
main = do ds <- runQ [d| {x = x+y; y = x+y; z = z} |]
putStrLn $ render $ vcat $ map pprDec ds
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the output looks like this:
-----8<----------8<----------8<----------8<----------8<-----
z = z
x = x GHC.Num:+ y
y = x GHC.Num:+ y
-----8<----------8<----------8<----------8<----------8<-----
This is far from ideal if you want to have [def_x, def_y, def_z] rather
than ds on the left hand side (as I do, and it doesn't seem unreasonable
to me to expect it to do the obvious). At first I thought this was just
caused by reversed lists in the parser, but then I discovered that
something seems to be then reordering declarations that depend on each
other - I'm guessing the type checker or possibly renamer, but I'm not
familiar enough with the code to know. Is fixing this (and similar
reorderings) an easy task? Any pointers?
Thanks
Ian
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