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--
-- Haddock - A Haskell Documentation Tool
--
-- (c) Simon Marlow 2003
--
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-# OPTIONS_HADDOCK hide #-}
module Haddock.GHC.Utils where
import Data.Char
import Data.Version
import qualified Data.Map as Map
import GHC
import HsSyn
import SrcLoc
import Outputable
import Name
import Packages
unL :: Located a -> a
unL (L _ x) = x
reL :: a -> Located a
reL = L undefined
moduleString :: Module -> String
moduleString = moduleNameString . moduleName
-- return the name of the package, with version info
modulePackageString = packageIdString . modulePackageId
-- return the (name,version) of the package
modulePackageInfo mod = case unpackPackageId pkg of
Nothing -> (packageIdString pkg, "")
Just x -> (pkgName x, showVersion (pkgVersion x))
where pkg = modulePackageId mod
mkModuleNoPackage :: String -> Module
mkModuleNoPackage str = mkModule (stringToPackageId "") (mkModuleName str)
instance (Outputable a, Outputable b) => Outputable (Map.Map a b) where
ppr m = ppr (Map.toList m)
isNameSym :: Name -> Bool
isNameSym = isSymOcc . nameOccName
isVarSym :: OccName -> Bool
isVarSym = isLexVarSym . occNameFS
getMainDeclBinder :: HsDecl name -> Maybe name
getMainDeclBinder (TyClD d) = Just (tcdName d)
getMainDeclBinder (ValD d)
= case collectAcc d [] of
[] -> Nothing
(name:_) -> Just (unLoc name)
getMainDeclBinder (SigD d) = sigNameNoLoc d
getMainDeclBinder (ForD (ForeignImport name _ _)) = Just (unLoc name)
getMainDeclBinder (ForD (ForeignExport _ _ _)) = Nothing
getMainDeclBinder _ = Nothing
isTyClD (TyClD _) = True
isTyClD _ = False
isClassD (TyClD d) = isClassDecl d
isClassD _ = False
isDocD (DocD _) = True
isDocD _ = False
isInstD (InstD _) = True
isInstD (TyClD d) = isFamInstDecl d
isInstD _ = False
pretty :: Outputable a => a -> String
pretty x = showSDoc (ppr x)
trace_ppr :: Outputable a => a -> b -> b
trace_ppr x y = trace (pretty x) y
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