| '..' { ([], True) }
fbind :: { HsRecField RdrName (LHsExpr RdrName) }
- : qvar '=' exp { HsRecField $1 $3 False }
- | qvar { HsRecField $1 (L (getLoc $1) placeHolderPunRhs) True }
- -- Here's where we say that plain 'x'
- -- means exactly 'x = x'. The pun-flag boolean is
- -- there so we can still print it right
+ : qvar '=' exp { HsRecField $1 $3 False }
+ | qvar { HsRecField $1 placeHolderPunRhs True }
+ -- In the punning case, use a place-holder
+ -- The renamer fills in the final value
-----------------------------------------------------------------------------
-- Implicit Parameter Bindings
HsType ty -> return (TypePat ty)
_ -> patFail loc
-placeHolderPunRhs :: HsExpr RdrName
+placeHolderPunRhs :: LHsExpr RdrName
-- The RHS of a punned record field will be filled in by the renamer
-- It's better not to make it an error, in case we want to print it when debugging
-placeHolderPunRhs = HsVar pun_RDR
+placeHolderPunRhs = noLoc (HsVar pun_RDR)
plus_RDR, bang_RDR, pun_RDR :: RdrName
plus_RDR = mkUnqual varName (fsLit "+") -- Hack