X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FBasicTypes.lhs;h=8cd5c35900cf29cae439b220b3a29a521d7729fb;hb=7998a24404ffa577a3c303e37e4cfe0baf846454;hp=b151f5b3cb85cf8f3d4cbbdfeac3b40481447bef;hpb=77166b1729061531eeb77c33f4d3b2581f7d4c41;p=ghc-hetmet.git diff --git a/compiler/basicTypes/BasicTypes.lhs b/compiler/basicTypes/BasicTypes.lhs index b151f5b..8cd5c35 100644 --- a/compiler/basicTypes/BasicTypes.lhs +++ b/compiler/basicTypes/BasicTypes.lhs @@ -14,12 +14,14 @@ types that \end{itemize} \begin{code} +{-# LANGUAGE DeriveDataTypeable #-} + module BasicTypes( Version, bumpVersion, initialVersion, Arity, - FunctionOrData(..), + FunctionOrData(..), WarningTxt(..), @@ -52,7 +54,10 @@ module BasicTypes( EP(..), - StrictnessMark(..), isMarkedUnboxed, isMarkedStrict, + HsBang(..), isBanged, isMarkedUnboxed, + StrictnessMark(..), isMarkedStrict, + + DefMethSpec(..), CompilerPhase, Activation(..), isActive, isNeverActive, isAlwaysActive, isEarlyActive, @@ -67,6 +72,8 @@ module BasicTypes( import FastString import Outputable + +import Data.Data hiding (Fixity) \end{code} %************************************************************************ @@ -87,7 +94,7 @@ type Arity = Int \begin{code} data FunctionOrData = IsFunction | IsData - deriving (Eq, Ord) + deriving (Eq, Ord, Data, Typeable) instance Outputable FunctionOrData where ppr IsFunction = text "(function)" @@ -122,7 +129,7 @@ initialVersion = 1 -- reason/explanation from a WARNING or DEPRECATED pragma data WarningTxt = WarningTxt [FastString] | DeprecatedTxt [FastString] - deriving Eq + deriving (Eq, Data, Typeable) instance Outputable WarningTxt where ppr (WarningTxt ws) = doubleQuotes (vcat (map ftext ws)) @@ -141,8 +148,9 @@ early in the hierarchy), but also in HsSyn. \begin{code} newtype IPName name = IPName name -- ?x - deriving( Eq, Ord ) -- Ord is used in the IP name cache finite map - -- (used in HscTypes.OrigIParamCache) + deriving( Eq, Ord, Data, Typeable ) + -- Ord is used in the IP name cache finite map + -- (used in HscTypes.OrigIParamCache) ipNameName :: IPName name -> name ipNameName (IPName n) = n @@ -173,6 +181,7 @@ type RuleName = FastString \begin{code} ------------------------ data Fixity = Fixity Int FixityDirection + deriving (Data, Typeable) instance Outputable Fixity where ppr (Fixity prec dir) = hcat [ppr dir, space, int prec] @@ -182,7 +191,7 @@ instance Eq Fixity where -- Used to determine if two fixities conflict ------------------------ data FixityDirection = InfixL | InfixR | InfixN - deriving(Eq) + deriving (Eq, Data, Typeable) instance Outputable FixityDirection where ppr InfixL = ptext (sLit "infixl") @@ -263,7 +272,7 @@ instance Outputable TopLevelFlag where data Boxity = Boxed | Unboxed - deriving( Eq ) + deriving( Eq, Data, Typeable ) isBoxed :: Boxity -> Bool isBoxed Boxed = True @@ -280,7 +289,7 @@ isBoxed Unboxed = False \begin{code} data RecFlag = Recursive | NonRecursive - deriving( Eq ) + deriving( Eq, Data, Typeable ) isRec :: RecFlag -> Bool isRec Recursive = True @@ -315,6 +324,7 @@ data OverlapFlag -- -- Example: constraint (Foo [Int]) -- instances (Foo [Int]) + -- (Foo [a]) OverlapOk -- Since the second instance has the OverlapOk flag, -- the first instance will be chosen (otherwise @@ -515,7 +525,7 @@ instance Show OccInfo where %************************************************************************ %* * -\subsection{Strictness indication} + Strictness indication %* * %************************************************************************ @@ -523,29 +533,73 @@ The strictness annotations on types in data type declarations e.g. data T = MkT !Int !(Bool,Bool) \begin{code} -data StrictnessMark -- Used in interface decls only - = MarkedStrict - | MarkedUnboxed - | NotMarkedStrict - deriving( Eq ) +------------------------- +-- HsBang describes what the *programmer* wrote +-- This info is retained in the DataCon.dcStrictMarks field +data HsBang = HsNoBang -isMarkedUnboxed :: StrictnessMark -> Bool -isMarkedUnboxed MarkedUnboxed = True -isMarkedUnboxed _ = False + | HsStrict -isMarkedStrict :: StrictnessMark -> Bool -isMarkedStrict NotMarkedStrict = False -isMarkedStrict _ = True -- All others are strict + | HsUnpack -- {-# UNPACK #-} ! (GHC extension, meaning "unbox") + + | HsUnpackFailed -- An UNPACK pragma that we could not make + -- use of, because the type isn't unboxable; + -- equivalant to HsStrict except for checkValidDataCon + deriving (Eq, Data, Typeable) + +instance Outputable HsBang where + ppr HsNoBang = empty + ppr HsStrict = char '!' + ppr HsUnpack = ptext (sLit "{-# UNPACK #-} !") + ppr HsUnpackFailed = ptext (sLit "{-# UNPACK (failed) #-} !") + +isBanged :: HsBang -> Bool +isBanged HsNoBang = False +isBanged _ = True + +isMarkedUnboxed :: HsBang -> Bool +isMarkedUnboxed HsUnpack = True +isMarkedUnboxed _ = False + +------------------------- +-- StrictnessMark is internal only, used to indicate strictness +-- of the DataCon *worker* fields +data StrictnessMark = MarkedStrict | NotMarkedStrict instance Outputable StrictnessMark where ppr MarkedStrict = ptext (sLit "!") - ppr MarkedUnboxed = ptext (sLit "!!") - ppr NotMarkedStrict = ptext (sLit "_") + ppr NotMarkedStrict = empty + +isMarkedStrict :: StrictnessMark -> Bool +isMarkedStrict NotMarkedStrict = False +isMarkedStrict _ = True -- All others are strict \end{code} %************************************************************************ %* * + Default method specfication +%* * +%************************************************************************ + +The DefMethSpec enumeration just indicates what sort of default method +is used for a class. It is generated from source code, and present in +interface files; it is converted to Class.DefMeth before begin put in a +Class object. + +\begin{code} +data DefMethSpec = NoDM -- No default method + | VanillaDM -- Default method given with polymorphic code + | GenericDM -- Default method given with generic code + +instance Outputable DefMethSpec where + ppr NoDM = empty + ppr VanillaDM = ptext (sLit "{- Has default method -}") + ppr GenericDM = ptext (sLit "{- Has generic default method -}") +\end{code} + +%************************************************************************ +%* * \subsection{Success flag} %* * %************************************************************************ @@ -587,21 +641,28 @@ data Activation = NeverActive | AlwaysActive | ActiveBefore CompilerPhase -- Active only *before* this phase | ActiveAfter CompilerPhase -- Active in this phase and later - deriving( Eq ) -- Eq used in comparing rules in HsDecls + deriving( Eq, Data, Typeable ) -- Eq used in comparing rules in HsDecls data RuleMatchInfo = ConLike -- See Note [CONLIKE pragma] | FunLike - deriving( Eq ) + deriving( Eq, Data, Typeable ) data InlinePragma -- Note [InlinePragma] = InlinePragma { inl_inline :: Bool -- True <=> INLINE, -- False <=> no pragma at all, or NOINLINE + , inl_sat :: Maybe Arity -- Just n <=> Inline only when applied to n -- explicit (non-type, non-dictionary) args + -- That is, inl_sat describes the number of *source-code* + -- arguments the thing must be applied to. We add on the + -- number of implicit, dictionary arguments when making + -- the InlineRule, and don't look at inl_sat further + , inl_act :: Activation -- Says during which phases inlining is allowed + , inl_rule :: RuleMatchInfo -- Should the function be treated like a constructor? - } deriving( Eq ) + } deriving( Eq, Data, Typeable ) \end{code} Note [InlinePragma] @@ -673,8 +734,13 @@ defaultInlinePragma = InlinePragma { inl_act = AlwaysActive alwaysInlinePragma = defaultInlinePragma { inl_inline = True } neverInlinePragma = defaultInlinePragma { inl_act = NeverActive } -dfunInlinePragma = defaultInlinePragma { inl_rule = ConLike } - + +-- A DFun has an always-active inline activation so that +-- exprIsConApp_maybe can "see" its unfolding +-- (However, its actual Unfolding is a DFunUnfolding, which is +-- never inlined other than via exprIsConApp_maybe.) +dfunInlinePragma = defaultInlinePragma { inl_act = AlwaysActive + , inl_rule = ConLike } isDefaultInlinePragma :: InlinePragma -> Bool isDefaultInlinePragma (InlinePragma { inl_act = activation @@ -701,8 +767,8 @@ setInlinePragmaRuleMatchInfo :: InlinePragma -> RuleMatchInfo -> InlinePragma setInlinePragmaRuleMatchInfo prag info = prag { inl_rule = info } instance Outputable Activation where - ppr AlwaysActive = ptext (sLit "ALWAYS") - ppr NeverActive = ptext (sLit "NEVER") + ppr AlwaysActive = brackets (ptext (sLit "ALWAYS")) + ppr NeverActive = brackets (ptext (sLit "NEVER")) ppr (ActiveBefore n) = brackets (char '~' <> int n) ppr (ActiveAfter n) = brackets (int n) @@ -713,18 +779,18 @@ instance Outputable RuleMatchInfo where instance Outputable InlinePragma where ppr (InlinePragma { inl_inline = inline, inl_act = activation , inl_rule = info, inl_sat = mb_arity }) - = pp_inline <> pp_sat <+> pp_info <+> pp_activation + = pp_inl_act (inline, activation) <+> pp_sat <+> pp_info where - pp_inline | inline = ptext (sLit "INLINE") - | otherwise = ptext (sLit "NOINLINE") - pp_sat | Just ar <- mb_arity = braces (int ar) + pp_inl_act (False, AlwaysActive) = empty -- defaultInlinePragma + pp_inl_act (False, NeverActive) = ptext (sLit "NOINLINE") + pp_inl_act (False, act) = ptext (sLit "NOINLINE") <> ppr act + pp_inl_act (True, AlwaysActive) = ptext (sLit "INLINE") + pp_inl_act (True, act) = ptext (sLit "INLINE") <> ppr act + + pp_sat | Just ar <- mb_arity = parens (ptext (sLit "sat-args=") <> int ar) | otherwise = empty pp_info | isFunLike info = empty | otherwise = ppr info - pp_activation - | inline && isAlwaysActive activation = empty - | not inline && isNeverActive activation = empty - | otherwise = ppr activation isActive :: CompilerPhase -> Activation -> Bool isActive _ NeverActive = False