therefore, is almost nothing but re-exporting.
\begin{code}
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
--- for details
-
module HsSyn (
module HsBinds,
module HsDecls,
-- often empty, downstream.
[LHsDecl name] -- Type, class, value, and interface signature decls
(Maybe DeprecTxt) -- reason/explanation for deprecation of this module
- (Maybe String) -- Haddock options, declared with the {-# DOCOPTIONS ... #-} pragma
(HaddockModInfo name) -- Haddock module info
(Maybe (HsDoc name)) -- Haddock module description
instance (OutputableBndr name)
=> Outputable (HsModule name) where
- ppr (HsModule Nothing _ imports decls _ _ _ mbDoc)
+ ppr (HsModule Nothing _ imports decls _ _ mbDoc)
= pp_mb mbDoc $$ pp_nonnull imports $$ pp_nonnull decls
- ppr (HsModule (Just name) exports imports decls deprec opts _ mbDoc)
+ ppr (HsModule (Just name) exports imports decls deprec _ mbDoc)
= vcat [
pp_mb mbDoc,
case exports of
pp_modname = ptext SLIT("module") <+> ppr name
+pp_mb :: Outputable t => Maybe t -> SDoc
pp_mb (Just x) = ppr x
pp_mb Nothing = empty
+pp_nonnull :: Outputable t => [t] -> SDoc
pp_nonnull [] = empty
pp_nonnull xs = vcat (map ppr xs)
\end{code}