ExtName(..), isDynamicExtName, extNameStatic,
ConDecl(..), ConDetails(..),
BangType(..), getBangType,
- IfaceSig(..), SpecDataSig(..),
DeprecDecl(..), DeprecTxt,
- hsDeclName, instDeclName, tyClDeclName, isClassDecl, isSynDecl, isDataDecl, countTyClDecls, toHsRule
+ hsDeclName, instDeclName, tyClDeclName, tyClDeclNames, tyClDeclSysNames,
+ isClassDecl, isSynDecl, isDataDecl, isIfaceSigDecl, countTyClDecls,
+ mkClassDeclSysNames, isIfaceRuleDecl, ifaceRuleDeclName,
+ getClassDeclSysNames, conDetailsTys
) where
#include "HsVersions.h"
-- friends:
-import HsBinds ( HsBinds, MonoBinds, Sig(..), FixitySig(..), nullMonoBinds )
+import HsBinds ( HsBinds, MonoBinds, Sig(..), FixitySig(..) )
import HsExpr ( HsExpr )
-import HsPragmas ( DataPragmas, ClassPragmas )
-import HsImpExp ( IE(..) )
import HsTypes
import PprCore ( pprCoreRule )
-import HsCore ( UfExpr(UfVar), UfBinder, IfaceSig(..), eq_ufBinders, eq_ufExpr, pprUfExpr, toUfExpr, toUfBndr )
+import HsCore ( UfExpr, UfBinder, HsIdInfo, pprHsIdInfo,
+ eq_ufBinders, eq_ufExpr, pprUfExpr
+ )
import CoreSyn ( CoreRule(..) )
-import BasicTypes ( Fixity, NewOrData(..) )
+import BasicTypes ( NewOrData(..) )
import CallConv ( CallConv, pprCallConv )
-import Name ( toRdrName )
-- others:
+import Name ( NamedThing )
import FunDeps ( pprFundeps )
-import Class ( FunDep )
+import Class ( FunDep, DefMeth(..) )
import CStrings ( CLabelString, pprCLabelString )
import Outputable
-import SrcLoc ( SrcLoc, noSrcLoc )
+import SrcLoc ( SrcLoc )
\end{code}
| DefD (DefaultDecl name)
| ValD (HsBinds name pat)
| ForD (ForeignDecl name)
- | SigD (IfaceSig name)
| FixD (FixitySig name)
| DeprecD (DeprecDecl name)
| RuleD (RuleDecl name pat)
\begin{code}
#ifdef DEBUG
-hsDeclName :: (Outputable name, Outputable pat)
+hsDeclName :: (NamedThing name, Outputable name, Outputable pat)
=> HsDecl name pat -> name
#endif
hsDeclName (TyClD decl) = tyClDeclName decl
hsDeclName (InstD decl) = instDeclName decl
-hsDeclName (SigD (IfaceSig name _ _ _)) = name
hsDeclName (ForD (ForeignDecl name _ _ _ _ _)) = name
hsDeclName (FixD (FixitySig name _ _)) = name
-- Others don't make sense
#endif
-tyClDeclName :: TyClDecl name pat -> name
-tyClDeclName (TyData _ _ name _ _ _ _ _ _) = name
-tyClDeclName (TySynonym name _ _ _) = name
-tyClDeclName (ClassDecl _ name _ _ _ _ _ _ _ _ _ _) = name
-
instDeclName :: InstDecl name pat -> name
instDeclName (InstDecl _ _ _ (Just name) _) = name
+
\end{code}
\begin{code}
-instance (Outputable name, Outputable pat)
+instance (NamedThing name, Outputable name, Outputable pat)
=> Outputable (HsDecl name pat) where
ppr (TyClD dcl) = ppr dcl
- ppr (SigD sig) = ppr sig
ppr (ValD binds) = ppr binds
ppr (DefD def) = ppr def
ppr (InstD inst) = ppr inst
ppr (DeprecD dd) = ppr dd
\end{code}
-\begin{code}
-instance Ord name => Eq (HsDecl name pat) where
- -- Used only when comparing interfaces,
- -- at which time only signature and type/class decls
- (SigD s1) == (SigD s2) = s1 == s2
- (TyClD d1) == (TyClD d2) = d1 == d2
- _ == _ = False
-\end{code}
-
%************************************************************************
%* *
\begin{code}
data TyClDecl name pat
- = TyData NewOrData
+ = IfaceSig name -- It may seem odd to classify an interface-file signature
+ (HsType name) -- as a 'TyClDecl', but it's very convenient. These three
+ [HsIdInfo name] -- are the kind that appear in interface files.
+ SrcLoc
+
+ | TyData NewOrData
(HsContext name) -- context
name -- type constructor
[HsTyVarBndr name] -- type variables
-- (i.e., derive default); Just [] => derive
-- *nothing*; Just <list> => as you would
-- expect...
- (DataPragmas name)
SrcLoc
+ name -- generic converter functions
+ name -- generic converter functions
- | TySynonym name -- type constructor
- [HsTyVarBndr name] -- type variables
- (HsType name) -- synonym expansion
+ | TySynonym name -- type constructor
+ [HsTyVarBndr name] -- type variables
+ (HsType name) -- synonym expansion
SrcLoc
| ClassDecl (HsContext name) -- context...
[FunDep name] -- functional dependencies
[Sig name] -- methods' signatures
(MonoBinds name pat) -- default methods
- (ClassPragmas name)
- name name name [name] -- The names of the tycon, datacon wrapper, datacon worker,
- -- and superclass selectors for this class.
- -- These are filled in as the ClassDecl is made.
+ (ClassDeclSysNames name)
SrcLoc
+\end{code}
+
+Simple classifiers
+
+\begin{code}
+isIfaceSigDecl, isDataDecl, isSynDecl, isClassDecl :: TyClDecl name pat -> Bool
+
+isIfaceSigDecl (IfaceSig _ _ _ _) = True
+isIfaceSigDecl other = False
+
+isSynDecl (TySynonym _ _ _ _) = True
+isSynDecl other = False
+
+isDataDecl (TyData _ _ _ _ _ _ _ _ _ _) = True
+isDataDecl other = False
+
+isClassDecl (ClassDecl _ _ _ _ _ _ _ _ ) = True
+isClassDecl other = False
+\end{code}
+
+Dealing with names
+
+\begin{code}
+--------------------------------
+tyClDeclName :: TyClDecl name pat -> name
+tyClDeclName (IfaceSig name _ _ _) = name
+tyClDeclName (TyData _ _ name _ _ _ _ _ _ _) = name
+tyClDeclName (TySynonym name _ _ _) = name
+tyClDeclName (ClassDecl _ name _ _ _ _ _ _) = name
+
+
+--------------------------------
+tyClDeclNames :: Eq name => TyClDecl name pat -> [(name, SrcLoc)]
+-- Returns all the binding names of the decl, along with their SrcLocs
+-- The first one is guaranteed to be the name of the decl
+-- For record fields, the first one counts as the SrcLoc
+-- We use the equality to filter out duplicate field names
+
+tyClDeclNames (TySynonym name _ _ loc)
+ = [(name,loc)]
+
+tyClDeclNames (ClassDecl _ cls_name _ _ sigs _ _ loc)
+ = (cls_name,loc) : [(n,loc) | ClassOpSig n _ _ loc <- sigs]
+
+tyClDeclNames (TyData _ _ tc_name _ cons _ _ loc _ _)
+ = (tc_name,loc) : conDeclsNames cons
-instance Ord name => Eq (TyClDecl name pat) where
+tyClDeclNames (IfaceSig name _ _ loc) = [(name,loc)]
+
+--------------------------------
+tyClDeclSysNames :: TyClDecl name pat -> [(name, SrcLoc)]
+-- Similar to tyClDeclNames, but returns the "implicit"
+-- or "system" names of the declaration
+
+tyClDeclSysNames (ClassDecl _ _ _ _ _ _ names loc) = [(n,loc) | n <- names]
+tyClDeclSysNames (TyData _ _ _ _ cons _ _ _ _ _) = [(wkr_name,loc) | ConDecl _ wkr_name _ _ _ loc <- cons]
+tyClDeclSysNames decl = []
+
+
+--------------------------------
+type ClassDeclSysNames name = [name]
+ -- [tycon, datacon wrapper, datacon worker,
+ -- superclass selector 1, ..., superclass selector n]
+ -- They are kept in a list rather than a tuple to make the
+ -- renamer easier.
+
+mkClassDeclSysNames :: (name, name, name, [name]) -> [name]
+getClassDeclSysNames :: [name] -> (name, name, name, [name])
+mkClassDeclSysNames (a,b,c,ds) = a:b:c:ds
+getClassDeclSysNames (a:b:c:ds) = (a,b,c,ds)
+\end{code}
+
+\begin{code}
+instance (NamedThing name, Ord name) => Eq (TyClDecl name pat) where
-- Used only when building interface files
- (==) (TyData nd1 cxt1 n1 tvs1 cons1 _ _ _ _)
- (TyData nd2 cxt2 n2 tvs2 cons2 _ _ _ _)
+ (==) (IfaceSig n1 t1 i1 _)
+ (IfaceSig n2 t2 i2 _) = n1==n2 && t1==t2 && i1==i2
+
+ (==) (TyData nd1 cxt1 n1 tvs1 cons1 _ _ _ _ _)
+ (TyData nd2 cxt2 n2 tvs2 cons2 _ _ _ _ _)
= n1 == n2 &&
nd1 == nd2 &&
eqWithHsTyVars tvs1 tvs2 (\ env ->
= n1 == n2 &&
eqWithHsTyVars tvs1 tvs2 (\ env -> eq_hsType env ty1 ty2)
- (==) (ClassDecl cxt1 n1 tvs1 fds1 sigs1 _ _ _ _ _ _ _)
- (ClassDecl cxt2 n2 tvs2 fds2 sigs2 _ _ _ _ _ _ _)
+ (==) (ClassDecl cxt1 n1 tvs1 fds1 sigs1 _ _ _ )
+ (ClassDecl cxt2 n2 tvs2 fds2 sigs2 _ _ _ )
= n1 == n2 &&
eqWithHsTyVars tvs1 tvs2 (\ env ->
eq_hsContext env cxt1 cxt2 &&
(==) _ _ = False -- default case
-
eq_hsFD env (ns1,ms1) (ns2,ms2)
= eqListBy (eq_hsVar env) ns1 ns2 && eqListBy (eq_hsVar env) ms1 ms2
eq_cls_sig env (ClassOpSig n1 dm1 ty1 _) (ClassOpSig n2 dm2 ty2 _)
= n1==n2 && dm1 `eq_dm` dm2 && eq_hsType env ty1 ty2
where
- -- Ignore the name of the default method.
+ -- Ignore the name of the default method for (DefMeth id)
-- This is used for comparing declarations before putting
-- them into interface files, and the name of the default
-- method isn't relevant
- (Just (_,explicit_dm1)) `eq_dm` (Just (_,explicit_dm2)) = explicit_dm1 == explicit_dm2
- Nothing `eq_dm` Nothing = True
- dm1 `eq_dm` dm2 = False
+ Nothing `eq_dm` Nothing = True
+ (Just NoDefMeth) `eq_dm` (Just NoDefMeth) = True
+ (Just GenDefMeth) `eq_dm` (Just GenDefMeth) = True
+ (Just (DefMeth _)) `eq_dm` (Just (DefMeth _)) = True
+ dm1 `eq_dm` dm2 = False
+
+
\end{code}
\begin{code}
-countTyClDecls :: [TyClDecl name pat] -> (Int, Int, Int, Int)
+countTyClDecls :: [TyClDecl name pat] -> (Int, Int, Int, Int, Int)
-- class, data, newtype, synonym decls
countTyClDecls decls
- = (length [() | ClassDecl _ _ _ _ _ _ _ _ _ _ _ _ <- decls],
- length [() | TyData DataType _ _ _ _ _ _ _ _ <- decls],
- length [() | TyData NewType _ _ _ _ _ _ _ _ <- decls],
- length [() | TySynonym _ _ _ _ <- decls])
-
-isDataDecl, isSynDecl, isClassDecl :: TyClDecl name pat -> Bool
-
-isSynDecl (TySynonym _ _ _ _) = True
-isSynDecl other = False
-
-isDataDecl (TyData _ _ _ _ _ _ _ _ _) = True
-isDataDecl other = False
-
-isClassDecl (ClassDecl _ _ _ _ _ _ _ _ _ _ _ _) = True
-isClassDecl other = False
+ = (length [() | ClassDecl _ _ _ _ _ _ _ _ <- decls],
+ length [() | TyData DataType _ _ _ _ _ _ _ _ _ <- decls],
+ length [() | TyData NewType _ _ _ _ _ _ _ _ _ <- decls],
+ length [() | TySynonym _ _ _ _ <- decls],
+ length [() | IfaceSig _ _ _ _ <- decls])
\end{code}
\begin{code}
-instance (Outputable name, Outputable pat)
+instance (NamedThing name, Outputable name, Outputable pat)
=> Outputable (TyClDecl name pat) where
+ ppr (IfaceSig var ty info _) = hsep [ppr var, dcolon, ppr ty, pprHsIdInfo info]
+
ppr (TySynonym tycon tyvars mono_ty src_loc)
= hang (ptext SLIT("type") <+> pp_decl_head [] tycon tyvars <+> equals)
4 (ppr mono_ty)
- ppr (TyData new_or_data context tycon tyvars condecls ncons derivings pragmas src_loc)
+ ppr (TyData new_or_data context tycon tyvars condecls ncons
+ derivings src_loc gen_conv1 gen_conv2) -- The generic names are not printed out ATM
= pp_tydecl
(ptext keyword <+> pp_decl_head context tycon tyvars <+> equals)
(pp_condecls condecls ncons)
NewType -> SLIT("newtype")
DataType -> SLIT("data")
- ppr (ClassDecl context clas tyvars fds sigs methods pragmas _ _ _ _ src_loc)
+ ppr (ClassDecl context clas tyvars fds sigs methods _ src_loc)
| null sigs -- No "where" part
= top_matter
pp_methods = getPprStyle $ \ sty ->
if ifaceStyle sty then empty else ppr methods
-
pp_decl_head :: Outputable name => HsContext name -> name -> [HsTyVarBndr name] -> SDoc
pp_decl_head context thing tyvars = hsep [pprHsContext context, ppr thing, interppSP tyvars]
])
\end{code}
-A type for recording what types a datatype should be specialised to.
-It's called a ``Sig'' because it's sort of like a ``type signature''
-for an datatype declaration.
-
-\begin{code}
-data SpecDataSig name
- = SpecDataSig name -- tycon to specialise
- (HsType name)
- SrcLoc
-
-instance (Outputable name)
- => Outputable (SpecDataSig name) where
-
- ppr (SpecDataSig tycon ty _)
- = hsep [text "{-# SPECIALIZE data", ppr ty, text "#-}"]
-\end{code}
%************************************************************************
%* *
name -- Name of the constructor's 'worker Id'
-- Filled in as the ConDecl is built
- [HsTyVarBndr name] -- Existentially quantified type variables
+ [HsTyVarBndr name] -- Existentially quantified type variables
(HsContext name) -- ...and context
-- If both are empty then there are no existentials
| RecCon -- record-style con decl
[([name], BangType name)] -- list of "fields"
+\end{code}
+
+\begin{code}
+conDeclsNames :: Eq name => [ConDecl name] -> [(name,SrcLoc)]
+ -- See tyClDeclNames for what this does
+ -- The function is boringly complicated because of the records
+ -- And since we only have equality, we have to be a little careful
+conDeclsNames cons
+ = snd (foldl do_one ([], []) cons)
+ where
+ do_one (flds_seen, acc) (ConDecl name _ _ _ details loc)
+ = do_details ((name,loc):acc) details
+ where
+ do_details acc (RecCon flds) = foldl do_fld (flds_seen, acc) flds
+ do_details acc other = (flds_seen, acc)
+
+ do_fld acc (flds, _) = foldl do_fld1 acc flds
+
+ do_fld1 (flds_seen, acc) fld
+ | fld `elem` flds_seen = (flds_seen,acc)
+ | otherwise = (fld:flds_seen, (fld,loc):acc)
+\end{code}
+
+\begin{code}
+conDetailsTys :: ConDetails name -> [HsType name]
+conDetailsTys (VanillaCon btys) = map getBangType btys
+conDetailsTys (InfixCon bty1 bty2) = [getBangType bty1, getBangType bty2]
+conDetailsTys (RecCon fields) = [getBangType bty | (_, bty) <- fields]
+
eq_ConDecl env (ConDecl n1 _ tvs1 cxt1 cds1 _)
(ConDecl n2 _ tvs2 cxt2 cds2 _)
= n1 == n2 &&
- (eqWithHsTyVars tvs1 tvs2 $ \ env ->
+ (eq_hsTyVars env tvs1 tvs2 $ \ env ->
eq_hsContext env cxt1 cxt2 &&
eq_ConDetails env cds1 cds2)
eq_ConDetails env _ _ = False
eq_fld env (ns1,bt1) (ns2, bt2) = ns1==ns2 && eq_btype env bt1 bt2
-
+\end{code}
+\begin{code}
data BangType name
= Banged (HsType name) -- HsType: to allow Haskell extensions
| Unbanged (HsType name) -- (MonoType only needed for straight Haskell)
name -- Head of LHS
CoreRule
+isIfaceRuleDecl (HsRule _ _ _ _ _ _) = False
+isIfaceRuleDecl other = True
+
+ifaceRuleDeclName :: RuleDecl name pat -> name
+ifaceRuleDeclName (IfaceRule _ _ n _ _ _) = n
+ifaceRuleDeclName (IfaceRuleOut n r) = n
+ifaceRuleDeclName (HsRule fs _ _ _ _ _) = pprPanic "ifaceRuleDeclName" (ppr fs)
data RuleBndr name
= RuleBndr name
| RuleBndrSig name (HsType name)
-instance Ord name => Eq (RuleDecl name pat) where
+instance (NamedThing name, Ord name) => Eq (RuleDecl name pat) where
-- Works for IfaceRules only; used when comparing interface file versions
(IfaceRule n1 bs1 f1 es1 rhs1 _) == (IfaceRule n2 bs2 f2 es2 rhs2 _)
= n1==n2 && f1 == f2 &&
eq_ufBinders emptyEqHsEnv bs1 bs2 (\env ->
eqListBy (eq_ufExpr env) (rhs1:es1) (rhs2:es2))
-instance (Outputable name, Outputable pat)
+instance (NamedThing name, Outputable name, Outputable pat)
=> Outputable (RuleDecl name pat) where
ppr (HsRule name tvs ns lhs rhs loc)
= sep [text "{-# RULES" <+> doubleQuotes (ptext name),
instance Outputable name => Outputable (RuleBndr name) where
ppr (RuleBndr name) = ppr name
ppr (RuleBndrSig name ty) = ppr name <> dcolon <> ppr ty
-
-toHsRule id (BuiltinRule _)
- = pprTrace "toHsRule: builtin" (ppr id) (bogusIfaceRule id)
-
-toHsRule id (Rule name bndrs args rhs)
- = IfaceRule name (map toUfBndr bndrs) (toRdrName id)
- (map toUfExpr args) (toUfExpr rhs) noSrcLoc
-
-bogusIfaceRule id
- = IfaceRule SLIT("bogus") [] (toRdrName id) [] (UfVar (toRdrName id)) noSrcLoc
\end{code}
%* *
%************************************************************************
-We use exported entities for things to deprecate. Cunning trick (hack?):
-`IEModuleContents undefined' is used for module deprecation.
+We use exported entities for things to deprecate.
\begin{code}
-data DeprecDecl name = Deprecation (IE name) DeprecTxt SrcLoc
+data DeprecDecl name = Deprecation name DeprecTxt SrcLoc
type DeprecTxt = FAST_STRING -- reason/explanation for deprecation
instance Outputable name => Outputable (DeprecDecl name) where
- ppr (Deprecation (IEModuleContents _) txt _)
- = hsep [text "{-# DEPRECATED", doubleQuotes (ppr txt), text "#-}"]
- ppr (Deprecation thing txt _)
+ ppr (Deprecation thing txt _)
= hsep [text "{-# DEPRECATED", ppr thing, doubleQuotes (ppr txt), text "#-}"]
\end{code}
projects / ghc-hetmet.git / blobdiff