HsImpExp: Abstract syntax: imports, exports, interfaces
\begin{code}
-{-# OPTIONS -fno-warn-incomplete-patterns #-}
--- 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/Commentary/CodingStyle#Warnings
--- for details
+{-# LANGUAGE DeriveDataTypeable #-}
module HsImpExp where
import Module ( ModuleName )
-import HsDoc ( HsDoc )
+import HsDoc ( HsDocString )
import Outputable
import FastString
import SrcLoc ( Located(..) )
+
+import Data.Data
\end{code}
%************************************************************************
ideclQualified :: Bool, -- ^ True => qualified
ideclAs :: Maybe ModuleName, -- ^ as Module
ideclHiding :: Maybe (Bool, [LIE name]) -- ^ (True => hiding, names)
- }
+ } deriving (Data, Typeable)
\end{code}
\begin{code}
pp_qual True = ptext (sLit "qualified")
pp_as Nothing = empty
- pp_as (Just a) = ptext (sLit "as ") <+> ppr a
+ pp_as (Just a) = ptext (sLit "as") <+> ppr a
ppr_imp True = ptext (sLit "{-# SOURCE #-}")
ppr_imp False = empty
- pp_spec Nothing = empty
- pp_spec (Just (False, spec))
- = parens (interpp'SP spec)
- pp_spec (Just (True, spec))
- = ptext (sLit "hiding") <+> parens (interpp'SP spec)
+ pp_spec Nothing = empty
+ pp_spec (Just (False, ies)) = ppr_ies ies
+ pp_spec (Just (True, ies)) = ptext (sLit "hiding") <+> ppr_ies ies
+
+ ppr_ies [] = ptext (sLit "()")
+ ppr_ies ies = char '(' <+> interpp'SP ies <+> char ')'
\end{code}
%************************************************************************
| IEThingAll name -- ^ Class/Type plus all methods/constructors
| IEThingWith name [name] -- ^ Class/Type plus some methods/constructors
| IEModuleContents ModuleName -- ^ (Export Only)
- | IEGroup Int (HsDoc name) -- ^ Doc section heading
- | IEDoc (HsDoc name) -- ^ Some documentation
+ | IEGroup Int HsDocString -- ^ Doc section heading
+ | IEDoc HsDocString -- ^ Some documentation
| IEDocNamed String -- ^ Reference to named doc
+ deriving (Data, Typeable)
\end{code}
\begin{code}
ieName (IEThingAbs n) = n
ieName (IEThingWith n _) = n
ieName (IEThingAll n) = n
+ieName _ = panic "ieName failed pattern match!"
ieNames :: IE a -> [a]
ieNames (IEVar n ) = [n]
ppr (IEThingAll thing) = hcat [ppr thing, text "(..)"]
ppr (IEThingWith thing withs)
= ppr thing <> parens (fsep (punctuate comma (map pprHsVar withs)))
- ppr (IEModuleContents mod)
- = ptext (sLit "module") <+> ppr mod
+ ppr (IEModuleContents mod')
+ = ptext (sLit "module") <+> ppr mod'
ppr (IEGroup n _) = text ("<IEGroup: " ++ (show n) ++ ">")
ppr (IEDoc doc) = ppr doc
ppr (IEDocNamed string) = text ("<IEDocNamed: " ++ string ++ ">")