module Language.Haskell.Refact.Renaming(rename) where -- import qualified Data.Generics.Schemes as SYB import qualified Data.Generics.Aliases as SYB import qualified GHC.SYB.Utils as SYB import qualified GHC import qualified Name as GHC import qualified RdrName as GHC import Control.Monad import Data.List import Exception import Language.Haskell.GhcMod import Language.Haskell.Refact.Utils import Language.Haskell.Refact.Utils.GhcUtils import Language.Haskell.Refact.Utils.GhcVersionSpecific import Language.Haskell.Refact.Utils.LocUtils import Language.Haskell.Refact.Utils.Monad import Language.Haskell.Refact.Utils.MonadFunctions import Language.Haskell.Refact.Utils.TypeSyn import Language.Haskell.Refact.Utils.TypeUtils {-This refactoring renames an indentifier to a user-specified name. Conditions: a: the indentifier to be renamed should be defined in the current module. b. the user provided name should be a valid name with regard to the name space of the identifier. c. the new name should not change the semantics of the program, and should not cause any name clash/conflict/ambiguity problem in the program. Attention: a. To select an identifier, stop the cursor at the beginning position of any occurrence of the identifier. b. Renaming a qualified name will not change the qualifier; c. In current module, an unqualified name won't become qualified after renaming; but, in client modules, an unqualified name might become qualified after renaming to avoid ambiguity prolem. In case the new name, say 'f', will cause ambiguous occurrence in the current module (this is because the identifier 'f' is imported from other modules), the user will be prompted to choose another new name or qualify the use of 'f' before doing renaming. -} {-In the current implementation, we assume that module name is same as the file name, but we should keep in mind that people also use unnamed modules. -} -- | Rename the given identifier. rename :: RefactSettings -> Cradle -> FilePath -> String -> SimpPos -> IO [FilePath] rename settings cradle fileName newName (row,col) = runRefacSession settings cradle (comp fileName newName (row,col)) -- | Body of the refactoring comp :: FilePath -> String -> SimpPos -> RefactGhc [ApplyRefacResult] comp fileName newName (row,col) = do logm $ "Renaming.comp: (fileName,newName,(row,col))=" ++ (show (fileName,newName,(row,col))) getModuleGhc fileName renamed <- getRefactRenamed parsed <- getRefactParsed logm $ "comp:renamed=" ++ (SYB.showData SYB.Renamer 0 renamed) -- ++AZ++ -- logm $ "comp:parsed=" ++ (SYB.showData SYB.Parser 0 parsed) -- ++AZ++ let (GHC.L _ rdrName') = gfromJust "Renaming.comp" $ locToRdrName (row, col) parsed logm $ "Renaming.comp:rdrName'=" ++ (showGhc rdrName') modu <- getModule -- let (Just (modName,_)) = getModuleName parsed let modName = case (getModuleName parsed) of Just (mn,_) -> mn Nothing -> GHC.mkModuleName "Main" let maybePn = locToName (row, col) renamed logm $ "Renamed.comp:maybePn=" ++ (showGhc maybePn) -- ++AZ++ case maybePn of Just pn@(GHC.L _ n) -> do logm $ "Renaming:(n,modu)=" ++ (showGhc (n,modu)) let (GHC.L _ rdrName) = gfromJust "Renaming.comp" $ locToRdrName (row, col) parsed let rdrNameStr = GHC.occNameString $ GHC.rdrNameOcc rdrName logm $ "Renaming: rdrName=" ++ (SYB.showData SYB.Parser 0 rdrName) logm $ "Renaming: occname rdrName=" ++ (show $ GHC.occNameString $ GHC.rdrNameOcc rdrName) unless (nameToString n /= newName) $ error "The new name is same as the old name" unless (isValidNewName n rdrNameStr newName) $ error $ "Invalid new name:" ++ newName ++ "!" logm $ "Renaming.comp: before GHC.nameModule,n=" ++ (showGhc n) -- let defineMod = GHC.moduleName $ GHC.nameModule n let defineMod = case GHC.nameModule_maybe n of Just mn -> GHC.moduleName mn Nothing -> modName -- TODO: why do we have this restriction? unless (defineMod == modName ) ( error ("This identifier is defined in module " ++ (show defineMod) ++ ", please do renaming in that module!")) -- logm $ "Renaming.comp:(isMainModule modu,pn)=" ++ (showGhc (isMainModule modu,pn)) if isMainModule modu && (showGhc pn) == "Main.main" then error ("The 'main' function defined in a 'Main' module should not be renamed!") else do logm $ "Renaming.comp: not main module" newNameGhc <- mkNewGhcName (Just modu) newName (refactoredMod,nIsExported) <- applyRefac (doRenaming pn rdrNameStr newName newNameGhc modName) RSAlreadyLoaded logm $ "Renaming:nIsExported=" ++ (show nIsExported) if nIsExported --no matter whether this pn is used or not. then do clients <- clientModsAndFiles modName logm ("Renaming: clients=" ++ (showGhc clients)) -- ++AZ++ debug refactoredClients <- mapM (renameInClientMod n newName newNameGhc) clients return $ refactoredMod:(concat refactoredClients) else return [refactoredMod] Nothing -> error "Invalid cursor position!" {- original rename args = do let fileName = args!!0 newName = args!!1 row = read (args!!2)::Int col = read (args!!3)::Int modName <- fileNameToModName fileName AbstractIO.putStrLn $ show modName (inscps, exps, mod,tokList) <- parseSourceFile fileName --AbstractIO.putStrLn x -- i <- lift $ ghcTypeCheck "Fish.hs" -- AbstractIO.putStrLn i let pnt = locToPNT fileName (row, col) mod defineMod = if isTopLevelPN (pNTtoPN pnt) then (fromJust (hasModName pnt)) else modName unless (pnt /= defaultPNT && isValidNewName pnt newName) $ error "Invalid cursor position or the new name is invalid!\n" unless (pNTtoName pnt/=newName) $ error "The new name is same as the old name" unless (defineMod == modName ) ( error ("This idenifier is defined in module " ++ modNameToStr defineMod ++ ", please do renaming in that module!")) if isMainModule modName && pNTtoName pnt == "main" then error ("The 'main' function defined in a 'Main' module should not be renamed!") else do (mod',((tokList',modified),_))<-doRenaming pnt newName modName mod inscps exps ((tokList,unmodified),fileName) if isExported pnt exps --no matter whether this pn is used or not. then do clients<-clientModsAndFiles modName --returns [(module name ,filename)] refactoredClients <- mapM (renameInClientMod pnt newName) clients writeRefactoredFiles False $ ((fileName,modified),(tokList',mod')):refactoredClients else writeRefactoredFiles False [((fileName,modified), (tokList',mod'))] -} -- |Actually do the renaming, split into the various things that can -- be renamed. Returns True if the name is exported doRenaming :: GHC.Located GHC.Name -> String -> String -> GHC.Name -> GHC.ModuleName -> RefactGhc Bool -- doRenaming pn@(GHC.L _ n) rdrNameStr newNameStr = do -- logm $ "doRenaming:(pn,rdrNameStr,newNameStr) = " ++ (showGhc (pn,rdrNameStr,newNameStr)) -- error "fubar" {- doRenaming pn@(GHC.L _ n) newNameStr = do logm $ "doRenaming:(pn,newNameStr) = " ++ (showGhc (pn,newNameStr)) renamed <- getRefactRenamed logm $ "doRenaming:renamed=" ++ (SYB.showData SYB.Renamer 0 renamed) -- ++AZ++ newName <- mkNewGhcName newNameStr renamePN n newName True renamed return () -} {- ---------Rename a type constructor-------------------------- doRenaming oldPNT@(PNT (PN _ (G _ _ _)) (Type _) _) newName modName mod inscps exps env =doRenaming' oldPNT newName mod mod (hsTypeConstrsAndClasses modName) exps env ---------Rename a class name--------------------------------- doRenaming oldPNT@(PNT _ (Class _ _) _) newName modName mod inscps exps env =doRenaming' oldPNT newName mod mod (hsTypeConstrsAndClasses modName) exps env ---------Rename a data structure----------------------------- doRenaming oldPNT@(PNT _ (ConstrOf _ _) _) newName modName mod inscps exps env =doRenaming' oldPNT newName mod mod (hsDataConstrs modName) exps env ---------Rename an instance name----------------------------- doRenaming oldPNT@(PNT _ (MethodOf i _ _) _) newName modName mod inscps exps env -- Claus =runStateT (renameTopLevelVarName oldPNT newName modName inscps exps mod True True) env ---------Rename a type variable name------------------------------ doRenaming oldPNT@(PNT oldPN@(PN i (S loc)) (Type _) _) newName modName mod inscps exps env = do let (before, parent, after)=divideDecls (hsDecls mod) oldPNT (parent',toks)<-doRenaming' oldPNT newName parent mod hsTypeVbls exps env return ((replaceDecls mod (before++parent'++after)),toks) -} {- ---------Rename a field name ------------------------------------- doRenaming pn@(GHC.L _ n) newNameStr | isFieldName n = do logm $ "doRenaming:fieldName=" ++ (showGhc n) -} {- old doRenaming oldPNT@(PNT _ (FieldOf con typeInfo) _) newName modName mod inscps exps env =do let (before,parent,after)=divideDecls (hsDecls mod) oldPNT siblingNames=siblingFieldNames oldPNT (f',d') <- hsFDsFromInside (before++after) if elem newName (siblingNames ++ map pNtoName d') then error("Name '"++newName++"' already existed\n") else if elem newName $ fieldNames oldPNT then runStateT (renameTopLevelVarName oldPNT newName modName inscps exps mod False False) env else runStateT (renameTopLevelVarName oldPNT newName modName inscps exps mod False True) env -} --------Rename a value variable name-------------------------------- doRenaming pn@(GHC.L _ oldn) rdrNameStr newNameStr newNameGhc modName = do logm $ "doRenaming:(pn,rdrNameStr,newNameStr) = " ++ (showGhc (pn,rdrNameStr,newNameStr)) renamed <- getRefactRenamed {- r' <- applyTP (once_buTPGhc (failTP `adhocTP` renameInMod -- `adhocTP` renameInMatch -- `adhocTP` renameInPattern -- `adhocTP` renameInExp -- `adhocTP` renameInAlt -- `adhocTP` renameInStmts )) renamed -} -- somewhereMStagedBu SYB.Renamer (SYB.mkM renameInMod everywhereMStaged SYB.Renamer (SYB.mkM renameInMod ) renamed logm $ "doRenaming done" nIsExported <- isExported oldn return nIsExported where -- 1. The name is declared in a module(top level name) -- renameInMod (mod::HsModuleP) renameInMod :: GHC.RenamedSource -> RefactGhc GHC.RenamedSource renameInMod ren -- was | isDeclaredIn oldn ren = do | True = do logm $ "renameInMod" renameTopLevelVarName oldn newNameStr newNameGhc modName ren True True -- renameInMod _ren = mzero {- original doRenaming oldPNT@(PNT oldPN Value loc) newName modName mod inscps exps env = runStateT (applyTP (once_buTP (failTP `adhocTP` renameInMod `adhocTP` renameInMatch `adhocTP` renameInPattern `adhocTP` renameInExp `adhocTP` renameInAlt `adhocTP` renameInStmts)) mod) env where -- 1. The name is declared in a module(top level name) renameInMod (mod::HsModuleP) |isDeclaredIn oldPN mod=renameTopLevelVarName oldPNT newName modName inscps exps mod True True renameInMod mod=mzero -- 2. The name is declared in a match renameInMatch (match::HsMatchP) |isDeclaredIn oldPN match=renameLocalVarName oldPN newName match renameInMatch match=mzero -- 3. The name is declared in a pattern binding. renameInPattern (pat:: HsDeclP) |isDeclaredIn oldPN pat=renameLocalVarName oldPN newName pat renameInPattern pat=mzero --4.The name is declared in a expression renameInExp (exp::HsExpP) |isDeclaredIn oldPN exp=renameLocalVarName oldPN newName exp renameInExp exp=mzero --5.The name is declared in a case alternative renameInAlt (alt::HsAltP) |isDeclaredIn oldPN alt=renameLocalVarName oldPN newName alt renameInAlt alt=mzero --6: The name is declared in a statment expression renameInStmts (stmts::HsExpP) |isDeclaredIn oldPN stmts=renameLocalVarName oldPN newName stmts renameInStmts stmts=mzero -} {- doRenaming' :: GHC.Name -> String -> RefactGhc () -- doRenaming' oldPNT@(PNT oldPN _ _) newName parent mod fun exps env doRenaming' oldPN newName = error "undefined doRenaming'" -} {- = let (f',d')= fun parent (f,d) =((nub.map pNtoName.filter (not.isQualifiedPN)) f', (nub.map pNtoName) d') in if elem newName (d \\ [pNtoName oldPN]) then error("Name '"++newName++"' already existed\n") else if elem newName f then error ("The new name will cause ambiguous occurrence problem," ++" please select another new name or qualify the use of " ++ newName ++ " before renaming!\n") else if causeNameClashInExports oldPN newName mod exps then error ("The new name will cause cause conflicting exports, please select another new name!") else runStateT (renamePN oldPN Nothing newName True parent) env -} {- old doRenaming' oldPNT@(PNT oldPN _ _) newName parent mod fun exps env = let (f',d')= fun parent (f,d) =((nub.map pNtoName.filter (not.isQualifiedPN)) f', (nub.map pNtoName) d') in if elem newName (d \\ [pNtoName oldPN]) then error("Name '"++newName++"' already existed\n") else if elem newName f then error ("The new name will cause ambiguous occurrence problem," ++" please select another new name or qualify the use of " ++ newName ++ " before renaming!\n") else if causeNameClashInExports oldPN newName mod exps then error ("The new name will cause cause conflicting exports, please select another new name!") else runStateT (renamePN oldPN Nothing newName True parent) env -} renameTopLevelVarName :: GHC.Name -> String -> GHC.Name -> GHC.ModuleName -> GHC.RenamedSource -> Bool -> Bool -> RefactGhc GHC.RenamedSource renameTopLevelVarName oldPN newName newNameGhc modName renamed existChecking exportChecking = do logm $ "renameTopLevelVarName:(existChecking,exportChecking)=" ++ (show (existChecking,exportChecking)) causeAmbiguity <- causeAmbiguityInExports oldPN newNameGhc -- f' contains names imported from other modules; -- d' contains the top level names declared in this module; let (f',d') = hsFDsFromInside renamed --filter those qualified free variables in f' -- let (f,d) = ((nub.map pNtoName.filter (not.isQualifiedPN)) f', (nub.map pNtoName) d') let (f,d) = (map nameToString f',map nameToString d') logm $ "renameTopLevelVarName:f=" ++ (show f) logm $ "renameTopLevelVarName:d=" ++ (show d) let newNameStr = nameToString newNameGhc logm $ "renameTopLevelVarName:(newName,newNameStr)=" ++ (show (newName,newNameStr)) scopeClashNames <- inScopeNames newName logm $ "renameTopLevelVarName:(scopeClashNames,intersection)=" ++ (showGhc (scopeClashNames,intersect scopeClashNames f')) logm $ "renameTopLevelVarName:(oldPN,modName)=" ++ (showGhc (oldPN,modName)) if (nonEmptyList $ intersect scopeClashNames f') -- if elem newNameStr f then error ("The new name will cause ambiguous occurrence problem," ++" please select another new name or qualify the use of ' " ++ newName ++ "' before renaming!\n") -- Another implementation option is to add the qualifier -- to newName automatically. else if existChecking && elem newNameStr (d \\ [nameToString oldPN]) --only check the declared names here. then error ("Name '"++newName++"' already existed\n") --the same name has been declared in this module. else if exportChecking && causeNameClashInExports oldPN newNameGhc modName renamed then error ("The new name will cause conflicting exports, please select another new name!") else if exportChecking && causeAmbiguity -- causeAmbiguityInExports oldPN newNameGhc {- inscps -} renamed then error $"The new name will cause ambiguity in the exports of module "++ show modName ++ ", please select another name!" else do -- get all of those declared names visible to oldPN at where oldPN is used. logm $ "renameTopLevelVarName:basic tests done" -- isInScopeUnqual <- isInScopeAndUnqualifiedGhc newName Nothing isInScopeUnqual <- isInScopeAndUnqualifiedGhc newName (Just newNameGhc) logm $ "renameTopLevelVarName:after isInScopeUnqual" let ds = hsVisibleNames oldPN renamed logm $ "renameTopLevelVarName:ds computed=" ++ (show ds) -- '\\[pNtoName oldPN]' handles the case in which the new name is same as the old name if existChecking && elem newName ((nub (ds `union` f)) \\[nameToString oldPN]) then error ("Name '"++newName++"' already existed, or rename '" ++nameToString oldPN++ "' to '"++newName++ "' will change the program's semantics!\n") else if exportChecking && isInScopeUnqual -- isInScopeAndUnqualifiedGhc newName Nothing then do logm $ "renameTopLevelVarName start..:should have qualified" renamePN oldPN newNameGhc True True renamed logm $ "renameTopLevelVarName done:should have qualified" -- drawTokenTreeDetailed "should be qualified" -- ++AZ++ debug r' <- getRefactRenamed return r' else do logm $ "renameTopLevelVarName start.." void $ renamePN oldPN newNameGhc True False renamed logm $ "renameTopLevelVarName done" r' <- getRefactRenamed return r' {- original renameTopLevelVarName oldPNT@(PNT oldPN _ _) newName modName inscps exps mod existChecking exportChecking =do -- f' contains names imported from other modules; -- d' contains the top level names declared in this module; (f',d') <- hsFDsFromInside mod --filter those qualified free variables in f' let (f,d) = ((nub.map pNtoName.filter (not.isQualifiedPN)) f', (nub.map pNtoName) d') if elem newName f then error ("The new name will cause ambiguous occurrence problem," ++" please select another new name or qualify the use of ' " ++ newName ++ "' before renaming!\n") -- Another implementation option is to add the qualifier -- to newName automatically. else if existChecking && elem newName (d \\ [pNtoName oldPN]) --only check the declared names here. then error ("Name '"++newName++"' already existed\n") --the same name has been declared in this module. else if exportChecking && causeNameClashInExports oldPN newName mod exps then error ("The new name will cause conflicting exports, please select another new name!") else if exportChecking && causeAmbiguityInExports oldPN newName inscps mod then error $"The new name will cause ambiguity in the exports of module "++ show modName ++ ", please select another name!" else do -- get all of those declared names visible to oldPN at where oldPN is used. ds<-hsVisibleNames oldPN mod -- '\\[pNtoName oldPN]' handles the case in which the new name is same as the old name if existChecking && elem newName ((nub (ds `union` f)) \\[pNtoName oldPN]) then error ("Name '"++newName++"' already existed, or rename '" ++pNtoName oldPN++ "' to '"++newName++ "' will change the program's semantics!\n") else if exportChecking && isInScopeAndUnqualified newName inscps then renamePN oldPN (Just modName) newName True mod else renamePN oldPN Nothing newName True mod -} {- renameLocalVarName oldPN newName t =do (f,d) <- hsFDNamesFromInside t if elem newName (d \\ [pNtoName oldPN]) --only check the declared names here. then error ("Name '"++newName++"' already existed\n") else do -- get all of those declared names visible to oldPN at where oldPN is used. ds<-hsVisibleNames oldPN t -- '\\[pNtoName oldPN]' handles the case in which the new name is same as the old name if elem newName ((nub (ds `union` f)) \\[pNtoName oldPN]) then error ("Name '"++newName++"' already existed, or rename '" ++pNtoName oldPN++ "' to '"++newName++ "' will change the program's semantics!\n") else renamePN oldPN Nothing newName True t -} renameInClientMod :: GHC.Name -> String -> GHC.Name -> TargetModule -> RefactGhc [ApplyRefacResult] renameInClientMod oldPN newName newNameGhc targetModule@(_,modSummary) = do logm $ "renameInClientMod:(oldPN,newNameGhc,modSummary)=" ++ (showGhc (oldPN,newNameGhc,targetModule)) -- ++AZ++ activateModule targetModule {- ++AZ++ debug stuff -} names <- ghandle handler (GHC.parseName $ nameToString oldPN) nameInfo <- mapM GHC.lookupName names logm $ "renameInClientMod: nameInfo=" ++ (showGhc nameInfo) {- ++AZ++ debug stuff end -} renamed <- getRefactRenamed let modName = GHC.moduleName $ GHC.ms_mod modSummary -- causeNameClashInExports oldPN newName mod exps -- logm $ "renameInClientMod:causeNameClashInExports oldPN modName renamed=" ++ (show $ causeNameClashInExports oldPN modName renamed) -- There are two different tests we need to do here -- 1. Does the new name clash with some existing name in the -- client mod, in which case it must be qualified -- 2. Is the new name module imported qualified, and so needs to -- be qualified in the replacement, according to the import isInScopeUnqual <- isInScopeAndUnqualifiedGhc (nameToString oldPN) Nothing isInScopeUnqualNew <- isInScopeAndUnqualifiedGhc newName Nothing logm $ "renameInClientMod: (isInScopeAndUnqual,isInScopeUnqualNew)=" ++ (show (isInScopeUnqual,isInScopeUnqualNew)) -- ++AZ++ -- if qualifier == [] --this name is not imported, but it maybe used in the import list -- if isInScopeUnqual if isInScopeUnqualNew then -- do (mod', ((ts',m),f))<-runStateT (renamePN oldPN Nothing newName True mod) ((ts,unmodified), fileName) do (refactoredMod,_) <- applyRefac (refactRenameSimple oldPN newName newNameGhc True) RSAlreadyLoaded return [refactoredMod] else do if causeNameClashInExports oldPN newNameGhc modName renamed then error $"The new name will cause conflicting exports in module "++ show newName ++ ", please select another name!" else do (refactoredMod,_) <- applyRefac (refactRenameComplex oldPN newName newNameGhc) RSAlreadyLoaded -- TODO: implement rest of this return [refactoredMod] where handler:: (GHC.GhcMonad m) => SomeException -> m [GHC.Name] handler _ = return [] refactRenameSimple :: GHC.Name -> String -> GHC.Name -> Bool -> RefactGhc () refactRenameSimple old newStr new useQual = do qualifyTopLevelVar newStr renamed <- getRefactRenamed logm $ "renameInClientMod.refactRename:renamed=" ++ (SYB.showData SYB.Renamer 0 renamed) -- ++AZ++ renamePN old new True useQual renamed return () refactRenameComplex :: GHC.Name -> String -> GHC.Name -> RefactGhc () refactRenameComplex old new newGhc = do qualifyTopLevelVar new worker old new newGhc qualifyTopLevelVar :: String -> RefactGhc () qualifyTopLevelVar new = do toQualify <- inScopeNames new logm $ "renameInClientMod.qualifyTopLevelVar:new:toQualify=" ++ (show new) ++ ":" ++ (showGhc toQualify) -- renamed <- getRefactRenamed -- renamePN new new True True renamed mapM_ qualifyToplevelName toQualify return () worker :: GHC.Name -> String -> GHC.Name -> RefactGhc () worker oldPN' newName' newNameGhc' = do logm $ "renameInClientMod.worker" renamed <- getRefactRenamed isInScopeUnqualNew <- isInScopeAndUnqualifiedGhc newName' Nothing let vs = hsVisibleNames oldPN' renamed --Does this check names other than variable names? if elem newName' ((nub vs) \\ [nameToString oldPN']) || isInScopeUnqualNew then void $ renamePN oldPN' newNameGhc' True True renamed --rename to qualified Name else void $ renamePN oldPN' newNameGhc' True False renamed -- do not qualify return () {- original renameInClientMod pnt@(PNT oldPN _ _) newName (m, fileName) =do (inscps, exps ,mod ,ts) <-parseSourceFile fileName let qualifier= hsQualifier pnt inscps if qualifier == [] --this name is not imported, but it maybe used in the import list then do (mod', ((ts',m),f))<-runStateT (renamePN oldPN Nothing newName True mod) ((ts,unmodified), fileName) return ((f,m),(ts',mod')) else do if causeNameClashInExports oldPN newName mod exps then error $"The new name will cause conflicting exports in module "++ show m ++ ", please select another name!" else do (mod',((ts',modified),f))<-runStateT (do mod'<-qualifyTopLevelVar newName inscps mod worker oldPN newName mod' inscps (head qualifier)) ((ts,unmodified),fileName) return ((f,modified), (ts',mod')) where qualifyTopLevelVar name inscps t = applyTP(full_tdTP(adhocTP idTP atPnt)) t where atPnt pnt@(PNT pn ty loc@(N (Just (SrcLoc fileName _ row col)))) | isTopLevelPNT pnt && pNTtoName pnt == name && canBeQualified pnt t = do let qualifier = ghead "qualfyTopLevelVar" $ hsQualifier pnt inscps renamePN pn (Just qualifier) name True pnt atPnt x = return x worker oldPN newName mod inscps qual = do vs<-hsVisibleNames oldPN mod --Does this check names other than variable names? if elem newName ((nub vs) \\[pNtoName oldPN]) || isInScopeAndUnqualified newName inscps then renamePN oldPN (Just qual) newName True mod --rename to qualified Name else do renamePN oldPN Nothing newName True mod --------------------------------------------- -} causeAmbiguityInExports :: GHC.Name -> GHC.Name -> RefactGhc Bool causeAmbiguityInExports old newName {- inscps -} = do (GHC.L _ (GHC.HsModule _ exps _imps _decls _ _)) <- getRefactParsed isInScopeUnqual <- isInScopeAndUnqualifiedGhc (nameToString old) Nothing let usedUnqual = usedWithoutQualR newName exps logm $ "causeAmbiguityInExports:(isInScopeUnqual,usedUnqual)" ++ (show (isInScopeUnqual,usedUnqual)) return (isInScopeUnqual && usedUnqual) {- siblingFieldNames (PNT pn (FieldOf con typeInfo) loc) = let cons=constructors typeInfo orig1 = pNtoLoc pn con=filter (\x->elem orig1 (map pNtoLoc (fromMaybe [] (conFields x)))) cons in if con==[] then [] else (map pNtoName1 (fromMaybe [] (conFields (head con))))\\ [pNtoName pn] where pNtoLoc (PN _ orig1) = orig1 pNtoName1 (PN i _) = i fieldNames (PNT pn (FieldOf con typeInfo) _) =let cons=constructors typeInfo in (nub. map pNtoName) $ concatMap (fromMaybe [].conFields) cons where pNtoName (PN i _) = i -} isValidNewName :: GHC.Name -> String -> String -> Bool isValidNewName oldName rdrNameStr newName = res where doTest :: Bool -> Bool -> String -> Bool doTest isCategory isRightType errStr = if isCategory then if isRightType then True else error errStr else True tyconOk = doTest (GHC.isTyConName oldName) (isConId newName) "Invalid type constructor/class name!" -- classOk = if isClassName oldName && isConId newName -- then True -- else error "Invalid class name!" dataConOk = doTest (GHC.isDataConName oldName) (isConId newName) "Invalid data constructor name!" fieldOk = doTest (isFieldName oldName) (isVarId newName) "Invalid field name!" -- instanceOk = doTest (isInstanceName oldName) -- (isVarId newName) -- "Invalid class instance name!" tyVarOk = doTest (GHC.isTyVarName oldName) (isVarId newName) "Invalid type variable name!" oldName' = rdrNameStr matchNamesOk | {- GHC.isValName oldName || -} GHC.isVarName oldName = if isVarId oldName' && not (isVarId newName) then error "The new name should be an identifier!" else if isOperator oldName' && not (isOperator newName) then error "The new name should be an operator!" else if (isVarId oldName' && isVarId newName) || (isOperator oldName' && isOperator newName) then True -- else error "Invalid new name!" else error $ "Invalid new name!" ++ (show (oldName',newName,isVarId oldName',isVarId newName,isOperator oldName',isOperator newName)) | otherwise = True res = tyconOk && dataConOk {- && fieldOk && instanceOk -} && tyVarOk && matchNamesOk -- res = error $ "isValidNewName:(tyconOk,dataConOk`,fieldOk,instanceOk,tyVarOk,matchNamesOk)=" ++ (show (tyconOk,dataConOk,fieldOk,instanceOk,tyVarOk,matchNamesOk)) {- old isValidNewName oldName newName = case oldName of (PNT (PN i (G _ _ _)) (Type _) _) ->if isConId newName then True else error "Invalid type constructor name!" (PNT _ (Class _ _) _) ->if isConId newName then True else error "Invalid class name!" (PNT _ (ConstrOf _ _) _) ->if isConId newName then True else error "Invalid data constructor name!" (PNT _ (FieldOf _ _ ) _ ) ->if isVarId newName then True else error "Invalid field name!" (PNT _ (MethodOf i _ _) _) ->if isVarId newName then True else error "Invalid class instance name!" (PNT (PN i (S loc)) (Type _) _) ->if isVarId newName then True else error "Invalid type variable name!" (PNT oldPN Value loc) -> let oldName' = pNTtoName oldName in if isVarId oldName' && not (isVarId newName) then error "The new name should be an identifier!" else if isOperator oldName' && not (isOperator newName) then error "The new name should be an operator!" else if (isVarId oldName' && isVarId newName) || (isOperator oldName' && isOperator newName) then True else error "Invalid new name!" -- |Divide a declaration list into three parts (before, parent, after) according to the PNT, -- where 'parent' is the first decl containing the PNT, 'before' are those decls before 'parent' -- and 'after' are those decls after 'parent'. divideDecls::[HsDeclP]->PNT->([HsDeclP],[HsDeclP],[HsDeclP]) divideDecls ds pnt = let (before,after)=break (\x->findPNT pnt x) ds in if (after/=[]) then (before, [head after], tail after) else (ds,[],[]) -}