{-# LANGUAGE TypeFamilies #-}
----------------------------------------------------------------------------
-- |
-- Module : Haddock.Interface.Rename
-- Copyright : (c) Simon Marlow 2003-2006,
-- David Waern 2006-2009
-- License : BSD-like
--
-- Maintainer : haddock@projects.haskell.org
-- Stability : experimental
-- Portability : portable
-----------------------------------------------------------------------------
module Haddock.Interface.Rename (renameInterface) where
import Data.Traversable (mapM)
import Haddock.GhcUtils
import Haddock.Types
import Bag (emptyBag)
import GHC hiding (NoLink)
import Name
import NameSet
import Coercion
import Control.Applicative
import Control.Monad hiding (mapM)
import Data.List
import qualified Data.Map as Map hiding ( Map )
import Prelude hiding (mapM)
renameInterface :: DynFlags -> LinkEnv -> Bool -> Interface -> ErrMsgM Interface
renameInterface dflags renamingEnv warnings iface =
-- first create the local env, where every name exported by this module
-- is mapped to itself, and everything else comes from the global renaming
-- env
let localEnv = foldl fn renamingEnv (ifaceVisibleExports iface)
where fn env name = Map.insert name (ifaceMod iface) env
-- rename names in the exported declarations to point to things that
-- are closer to, or maybe even exported by, the current module.
(renamedExportItems, missingNames1)
= runRnFM localEnv (renameExportItems (ifaceExportItems iface))
(rnDocMap, missingNames2) = runRnFM localEnv (mapM renameDoc (ifaceDocMap iface))
(rnArgMap, missingNames3) = runRnFM localEnv (mapM (mapM renameDoc) (ifaceArgMap iface))
(finalModuleDoc, missingNames4)
= runRnFM localEnv (renameDocumentation (ifaceDoc iface))
-- combine the missing names and filter out the built-ins, which would
-- otherwise allways be missing.
missingNames = nub $ filter isExternalName -- XXX: isExternalName filters out too much
(missingNames1 ++ missingNames2 ++ missingNames3 ++ missingNames4)
-- filter out certain built in type constructors using their string
-- representation. TODO: use the Name constants from the GHC API.
-- strings = filter (`notElem` ["()", "[]", "(->)"])
-- (map pretty missingNames)
strings = map (pretty dflags) . filter (\n -> not (isSystemName n || isBuiltInSyntax n)) $ missingNames
in do
-- report things that we couldn't link to. Only do this for non-hidden
-- modules.
unless (OptHide `elem` ifaceOptions iface || null strings || not warnings) $
tell ["Warning: " ++ moduleString (ifaceMod iface) ++
": could not find link destinations for:\n"++
unwords (" " : strings) ]
return $ iface { ifaceRnDoc = finalModuleDoc,
ifaceRnDocMap = rnDocMap,
ifaceRnArgMap = rnArgMap,
ifaceRnExportItems = renamedExportItems }
--------------------------------------------------------------------------------
-- Monad for renaming
--
-- The monad does two things for us: it passes around the environment for
-- renaming, and it returns a list of names which couldn't be found in
-- the environment.
--------------------------------------------------------------------------------
newtype RnM a =
RnM { unRn :: (Name -> (Bool, DocName)) -- name lookup function
-> (a,[Name])
}
instance Monad RnM where
(>>=) = thenRn
return = returnRn
instance Functor RnM where
fmap f x = do a <- x; return (f a)
instance Applicative RnM where
pure = return
(<*>) = ap
returnRn :: a -> RnM a
returnRn a = RnM (const (a,[]))
thenRn :: RnM a -> (a -> RnM b) -> RnM b
m `thenRn` k = RnM (\lkp -> case unRn m lkp of
(a,out1) -> case unRn (k a) lkp of
(b,out2) -> (b,out1++out2))
getLookupRn :: RnM (Name -> (Bool, DocName))
getLookupRn = RnM (\lkp -> (lkp,[]))
outRn :: Name -> RnM ()
outRn name = RnM (const ((),[name]))
lookupRn :: Name -> RnM DocName
lookupRn name = do
lkp <- getLookupRn
case lkp name of
(False,maps_to) -> do outRn name; return maps_to
(True, maps_to) -> return maps_to
runRnFM :: LinkEnv -> RnM a -> (a,[Name])
runRnFM env rn = unRn rn lkp
where
lkp n = case Map.lookup n env of
Nothing -> (False, Undocumented n)
Just mdl -> (True, Documented n mdl)
--------------------------------------------------------------------------------
-- Renaming
--------------------------------------------------------------------------------
rename :: Name -> RnM DocName
rename = lookupRn
renameL :: Located Name -> RnM (Located DocName)
renameL = mapM rename
renameExportItems :: [ExportItem Name] -> RnM [ExportItem DocName]
renameExportItems = mapM renameExportItem
renameDocForDecl :: DocForDecl Name -> RnM (DocForDecl DocName)
renameDocForDecl (doc, fnArgsDoc) =
(,) <$> renameDocumentation doc <*> renameFnArgsDoc fnArgsDoc
renameDocumentation :: Documentation Name -> RnM (Documentation DocName)
renameDocumentation (Documentation mDoc mWarning) =
Documentation <$> mapM renameDoc mDoc <*> mapM renameDoc mWarning
renameLDocHsSyn :: LHsDocString -> RnM LHsDocString
renameLDocHsSyn = return
renameDoc :: Traversable t => t Name -> RnM (t DocName)
renameDoc = traverse rename
renameFnArgsDoc :: FnArgsDoc Name -> RnM (FnArgsDoc DocName)
renameFnArgsDoc = mapM renameDoc
renameLType :: LHsType Name -> RnM (LHsType DocName)
renameLType = mapM renameType
renameLKind :: LHsKind Name -> RnM (LHsKind DocName)
renameLKind = renameLType
renameMaybeLKind :: Maybe (LHsKind Name) -> RnM (Maybe (LHsKind DocName))
renameMaybeLKind = traverse renameLKind
renameType :: HsType Name -> RnM (HsType DocName)
renameType t = case t of
HsForAllTy expl extra tyvars lcontext ltype -> do
tyvars' <- renameLTyVarBndrs tyvars
lcontext' <- renameLContext lcontext
ltype' <- renameLType ltype
return (HsForAllTy expl extra tyvars' lcontext' ltype')
HsTyVar n -> return . HsTyVar =<< rename n
HsBangTy b ltype -> return . HsBangTy b =<< renameLType ltype
HsAppTy a b -> do
a' <- renameLType a
b' <- renameLType b
return (HsAppTy a' b')
HsFunTy a b -> do
a' <- renameLType a
b' <- renameLType b
return (HsFunTy a' b')
HsListTy ty -> return . HsListTy =<< renameLType ty
HsPArrTy ty -> return . HsPArrTy =<< renameLType ty
HsIParamTy n ty -> liftM (HsIParamTy n) (renameLType ty)
HsEqTy ty1 ty2 -> liftM2 HsEqTy (renameLType ty1) (renameLType ty2)
HsTupleTy b ts -> return . HsTupleTy b =<< mapM renameLType ts
HsOpTy a (w, L loc op) b -> do
op' <- rename op
a' <- renameLType a
b' <- renameLType b
return (HsOpTy a' (w, L loc op') b')
HsParTy ty -> return . HsParTy =<< renameLType ty
HsKindSig ty k -> do
ty' <- renameLType ty
k' <- renameLKind k
return (HsKindSig ty' k')
HsDocTy ty doc -> do
ty' <- renameLType ty
doc' <- renameLDocHsSyn doc
return (HsDocTy ty' doc')
HsTyLit x -> return (HsTyLit x)
HsWrapTy a b -> HsWrapTy a <$> renameType b
HsRecTy a -> HsRecTy <$> mapM renameConDeclFieldField a
HsCoreTy a -> pure (HsCoreTy a)
HsExplicitListTy a b -> HsExplicitListTy a <$> mapM renameLType b
HsExplicitTupleTy a b -> HsExplicitTupleTy a <$> mapM renameLType b
HsQuasiQuoteTy a -> HsQuasiQuoteTy <$> renameHsQuasiQuote a
HsSpliceTy _ _ -> error "renameType: HsSpliceTy"
HsWildcardTy -> pure HsWildcardTy
HsNamedWildcardTy a -> HsNamedWildcardTy <$> rename a
renameHsQuasiQuote :: HsQuasiQuote Name -> RnM (HsQuasiQuote DocName)
renameHsQuasiQuote (HsQuasiQuote a b c) = HsQuasiQuote <$> rename a <*> pure b <*> pure c
renameLTyVarBndrs :: LHsTyVarBndrs Name -> RnM (LHsTyVarBndrs DocName)
renameLTyVarBndrs (HsQTvs { hsq_kvs = _, hsq_tvs = tvs })
= do { tvs' <- mapM renameLTyVarBndr tvs
; return (HsQTvs { hsq_kvs = error "haddock:renameLTyVarBndrs", hsq_tvs = tvs' }) }
-- This is rather bogus, but I'm not sure what else to do
renameLTyVarBndr :: LHsTyVarBndr Name -> RnM (LHsTyVarBndr DocName)
renameLTyVarBndr (L loc (UserTyVar n))
= do { n' <- rename n
; return (L loc (UserTyVar n')) }
renameLTyVarBndr (L loc (KindedTyVar (L lv n) kind))
= do { n' <- rename n
; kind' <- renameLKind kind
; return (L loc (KindedTyVar (L lv n') kind')) }
renameLContext :: Located [LHsType Name] -> RnM (Located [LHsType DocName])
renameLContext (L loc context) = do
context' <- mapM renameLType context
return (L loc context')
renameInstHead :: InstHead Name -> RnM (InstHead DocName)
renameInstHead (className, k, types, rest) = do
className' <- rename className
k' <- mapM renameType k
types' <- mapM renameType types
rest' <- case rest of
ClassInst cs -> ClassInst <$> mapM renameType cs
TypeInst ts -> TypeInst <$> traverse renameType ts
DataInst dd -> DataInst <$> renameTyClD dd
return (className', k', types', rest')
renameLDecl :: LHsDecl Name -> RnM (LHsDecl DocName)
renameLDecl (L loc d) = return . L loc =<< renameDecl d
renameDecl :: HsDecl Name -> RnM (HsDecl DocName)
renameDecl decl = case decl of
TyClD d -> do
d' <- renameTyClD d
return (TyClD d')
SigD s -> do
s' <- renameSig s
return (SigD s')
ForD d -> do
d' <- renameForD d
return (ForD d')
InstD d -> do
d' <- renameInstD d
return (InstD d')
_ -> error "renameDecl"
renameLThing :: (a Name -> RnM (a DocName)) -> Located (a Name) -> RnM (Located (a DocName))
renameLThing fn (L loc x) = return . L loc =<< fn x
renameTyClD :: TyClDecl Name -> RnM (TyClDecl DocName)
renameTyClD d = case d of
-- TyFamily flav lname ltyvars kind tckind -> do
FamDecl { tcdFam = decl } -> do
decl' <- renameFamilyDecl decl
return (FamDecl { tcdFam = decl' })
SynDecl { tcdLName = lname, tcdTyVars = tyvars, tcdRhs = rhs, tcdFVs = _fvs } -> do
lname' <- renameL lname
tyvars' <- renameLTyVarBndrs tyvars
rhs' <- renameLType rhs
return (SynDecl { tcdLName = lname', tcdTyVars = tyvars', tcdRhs = rhs', tcdFVs = placeHolderNames })
DataDecl { tcdLName = lname, tcdTyVars = tyvars, tcdDataDefn = defn, tcdFVs = _fvs } -> do
lname' <- renameL lname
tyvars' <- renameLTyVarBndrs tyvars
defn' <- renameDataDefn defn
return (DataDecl { tcdLName = lname', tcdTyVars = tyvars', tcdDataDefn = defn', tcdFVs = placeHolderNames })
ClassDecl { tcdCtxt = lcontext, tcdLName = lname, tcdTyVars = ltyvars
, tcdFDs = lfundeps, tcdSigs = lsigs, tcdATs = ats, tcdATDefs = at_defs } -> do
lcontext' <- renameLContext lcontext
lname' <- renameL lname
ltyvars' <- renameLTyVarBndrs ltyvars
lfundeps' <- mapM renameLFunDep lfundeps
lsigs' <- mapM renameLSig lsigs
ats' <- mapM (renameLThing renameFamilyDecl) ats
at_defs' <- mapM renameLTyFamDefltEqn at_defs
-- we don't need the default methods or the already collected doc entities
return (ClassDecl { tcdCtxt = lcontext', tcdLName = lname', tcdTyVars = ltyvars'
, tcdFDs = lfundeps', tcdSigs = lsigs', tcdMeths= emptyBag
, tcdATs = ats', tcdATDefs = at_defs', tcdDocs = [], tcdFVs = placeHolderNames })
where
renameLFunDep (L loc (xs, ys)) = do
xs' <- mapM rename (map unLoc xs)
ys' <- mapM rename (map unLoc ys)
return (L loc (map noLoc xs', map noLoc ys'))
renameLSig (L loc sig) = return . L loc =<< renameSig sig
renameFamilyDecl :: FamilyDecl Name -> RnM (FamilyDecl DocName)
renameFamilyDecl (FamilyDecl { fdInfo = info, fdLName = lname
, fdTyVars = ltyvars, fdKindSig = tckind }) = do
info' <- renameFamilyInfo info
lname' <- renameL lname
ltyvars' <- renameLTyVarBndrs ltyvars
tckind' <- renameMaybeLKind tckind
return (FamilyDecl { fdInfo = info', fdLName = lname'
, fdTyVars = ltyvars', fdKindSig = tckind' })
renameFamilyInfo :: FamilyInfo Name -> RnM (FamilyInfo DocName)
renameFamilyInfo DataFamily = return DataFamily
renameFamilyInfo OpenTypeFamily = return OpenTypeFamily
renameFamilyInfo (ClosedTypeFamily eqns)
= do { eqns' <- mapM renameLTyFamInstEqn eqns
; return $ ClosedTypeFamily eqns' }
renameDataDefn :: HsDataDefn Name -> RnM (HsDataDefn DocName)
renameDataDefn (HsDataDefn { dd_ND = nd, dd_ctxt = lcontext, dd_cType = cType
, dd_kindSig = k, dd_cons = cons }) = do
lcontext' <- renameLContext lcontext
k' <- renameMaybeLKind k
cons' <- mapM (mapM renameCon) cons
-- I don't think we need the derivings, so we return Nothing
return (HsDataDefn { dd_ND = nd, dd_ctxt = lcontext', dd_cType = cType
, dd_kindSig = k', dd_cons = cons', dd_derivs = Nothing })
renameCon :: ConDecl Name -> RnM (ConDecl DocName)
renameCon decl@(ConDecl { con_names = lnames, con_qvars = ltyvars
, con_cxt = lcontext, con_details = details
, con_res = restype, con_doc = mbldoc }) = do
lnames' <- mapM renameL lnames
ltyvars' <- renameLTyVarBndrs ltyvars
lcontext' <- renameLContext lcontext
details' <- renameDetails details
restype' <- renameResType restype
mbldoc' <- mapM renameLDocHsSyn mbldoc
return (decl { con_names = lnames', con_qvars = ltyvars', con_cxt = lcontext'
, con_details = details', con_res = restype', con_doc = mbldoc' })
where
renameDetails (RecCon (L l fields)) = do
fields' <- mapM renameConDeclFieldField fields
return (RecCon (L l fields'))
renameDetails (PrefixCon ps) = return . PrefixCon =<< mapM renameLType ps
renameDetails (InfixCon a b) = do
a' <- renameLType a
b' <- renameLType b
return (InfixCon a' b')
renameResType (ResTyH98) = return ResTyH98
renameResType (ResTyGADT l t) = return . ResTyGADT l =<< renameLType t
renameConDeclFieldField :: LConDeclField Name -> RnM (LConDeclField DocName)
renameConDeclFieldField (L l (ConDeclField names t doc)) = do
names' <- mapM renameL names
t' <- renameLType t
doc' <- mapM renameLDocHsSyn doc
return $ L l (ConDeclField names' t' doc')
renameSig :: Sig Name -> RnM (Sig DocName)
renameSig sig = case sig of
TypeSig lnames ltype _ -> do
lnames' <- mapM renameL lnames
ltype' <- renameLType ltype
return (TypeSig lnames' ltype' PlaceHolder)
PatSynSig lname (flag, qtvs) lreq lprov lty -> do
lname' <- renameL lname
qtvs' <- renameLTyVarBndrs qtvs
lreq' <- renameLContext lreq
lprov' <- renameLContext lprov
lty' <- renameLType lty
return $ PatSynSig lname' (flag, qtvs') lreq' lprov' lty'
FixSig (FixitySig lnames fixity) -> do
lnames' <- mapM renameL lnames
return $ FixSig (FixitySig lnames' fixity)
MinimalSig src s -> MinimalSig src <$> traverse renameL s
-- we have filtered out all other kinds of signatures in Interface.Create
_ -> error "expected TypeSig"
renameForD :: ForeignDecl Name -> RnM (ForeignDecl DocName)
renameForD (ForeignImport lname ltype co x) = do
lname' <- renameL lname
ltype' <- renameLType ltype
return (ForeignImport lname' ltype' co x)
renameForD (ForeignExport lname ltype co x) = do
lname' <- renameL lname
ltype' <- renameLType ltype
return (ForeignExport lname' ltype' co x)
renameInstD :: InstDecl Name -> RnM (InstDecl DocName)
renameInstD (ClsInstD { cid_inst = d }) = do
d' <- renameClsInstD d
return (ClsInstD { cid_inst = d' })
renameInstD (TyFamInstD { tfid_inst = d }) = do
d' <- renameTyFamInstD d
return (TyFamInstD { tfid_inst = d' })
renameInstD (DataFamInstD { dfid_inst = d }) = do
d' <- renameDataFamInstD d
return (DataFamInstD { dfid_inst = d' })
renameClsInstD :: ClsInstDecl Name -> RnM (ClsInstDecl DocName)
renameClsInstD (ClsInstDecl { cid_overlap_mode = omode
, cid_poly_ty =ltype, cid_tyfam_insts = lATs
, cid_datafam_insts = lADTs }) = do
ltype' <- renameLType ltype
lATs' <- mapM (mapM renameTyFamInstD) lATs
lADTs' <- mapM (mapM renameDataFamInstD) lADTs
return (ClsInstDecl { cid_overlap_mode = omode
, cid_poly_ty = ltype', cid_binds = emptyBag
, cid_sigs = []
, cid_tyfam_insts = lATs', cid_datafam_insts = lADTs' })
renameTyFamInstD :: TyFamInstDecl Name -> RnM (TyFamInstDecl DocName)
renameTyFamInstD (TyFamInstDecl { tfid_eqn = eqn })
= do { eqn' <- renameLTyFamInstEqn eqn
; return (TyFamInstDecl { tfid_eqn = eqn'
, tfid_fvs = placeHolderNames }) }
renameLTyFamInstEqn :: LTyFamInstEqn Name -> RnM (LTyFamInstEqn DocName)
renameLTyFamInstEqn (L loc (TyFamEqn { tfe_tycon = tc, tfe_pats = pats_w_bndrs, tfe_rhs = rhs }))
= do { tc' <- renameL tc
; pats' <- mapM renameLType (hswb_cts pats_w_bndrs)
; rhs' <- renameLType rhs
; return (L loc (TyFamEqn { tfe_tycon = tc'
, tfe_pats = HsWB pats' PlaceHolder PlaceHolder PlaceHolder
, tfe_rhs = rhs' })) }
renameLTyFamDefltEqn :: LTyFamDefltEqn Name -> RnM (LTyFamDefltEqn DocName)
renameLTyFamDefltEqn (L loc (TyFamEqn { tfe_tycon = tc, tfe_pats = tvs, tfe_rhs = rhs }))
= do { tc' <- renameL tc
; tvs' <- renameLTyVarBndrs tvs
; rhs' <- renameLType rhs
; return (L loc (TyFamEqn { tfe_tycon = tc'
, tfe_pats = tvs'
, tfe_rhs = rhs' })) }
renameDataFamInstD :: DataFamInstDecl Name -> RnM (DataFamInstDecl DocName)
renameDataFamInstD (DataFamInstDecl { dfid_tycon = tc, dfid_pats = pats_w_bndrs, dfid_defn = defn })
= do { tc' <- renameL tc
; pats' <- mapM renameLType (hswb_cts pats_w_bndrs)
; defn' <- renameDataDefn defn
; return (DataFamInstDecl { dfid_tycon = tc'
, dfid_pats
= HsWB pats' PlaceHolder PlaceHolder PlaceHolder
, dfid_defn = defn', dfid_fvs = placeHolderNames }) }
renameExportItem :: ExportItem Name -> RnM (ExportItem DocName)
renameExportItem item = case item of
ExportModule mdl -> return (ExportModule mdl)
ExportGroup lev id_ doc -> do
doc' <- renameDoc doc
return (ExportGroup lev id_ doc')
ExportDecl decl doc subs instances fixities splice -> do
decl' <- renameLDecl decl
doc' <- renameDocForDecl doc
subs' <- mapM renameSub subs
instances' <- forM instances $ \(inst, idoc, L l n) -> do
inst' <- renameInstHead inst
n' <- rename n
idoc' <- mapM renameDoc idoc
return (inst', idoc',L l n')
fixities' <- forM fixities $ \(name, fixity) -> do
name' <- lookupRn name
return (name', fixity)
return (ExportDecl decl' doc' subs' instances' fixities' splice)
ExportNoDecl x subs -> do
x' <- lookupRn x
subs' <- mapM lookupRn subs
return (ExportNoDecl x' subs')
ExportDoc doc -> do
doc' <- renameDoc doc
return (ExportDoc doc')
renameSub :: (Name, DocForDecl Name) -> RnM (DocName, DocForDecl DocName)
renameSub (n,doc) = do
n' <- rename n
doc' <- renameDocForDecl doc
return (n', doc')
type instance PostRn DocName NameSet = PlaceHolder
type instance PostRn DocName Fixity = PlaceHolder
type instance PostRn DocName Bool = PlaceHolder
type instance PostRn DocName [Name] = PlaceHolder
type instance PostTc DocName Kind = PlaceHolder
type instance PostTc DocName Type = PlaceHolder
type instance PostTc DocName Coercion = PlaceHolder