\end{itemize}
\begin{code}
+{-# LANGUAGE DeriveDataTypeable #-}
+
module BasicTypes(
Version, bumpVersion, initialVersion,
Arity,
- FunctionOrData(..),
+ FunctionOrData(..),
WarningTxt(..),
EP(..),
- StrictnessMark(..), isMarkedUnboxed, isMarkedStrict,
+ HsBang(..), isBanged, isMarkedUnboxed,
+ StrictnessMark(..), isMarkedStrict,
+
+ DefMethSpec(..),
CompilerPhase,
Activation(..), isActive, isNeverActive, isAlwaysActive, isEarlyActive,
RuleMatchInfo(..), isConLike, isFunLike,
- InlinePragma(..), defaultInlinePragma, neverInlinePragma, dfunInlinePragma,
- isDefaultInlinePragma, isInlinePragma,
+ InlinePragma(..), defaultInlinePragma, alwaysInlinePragma, neverInlinePragma, dfunInlinePragma,
+ isDefaultInlinePragma, isInlinePragma, inlinePragmaSat,
inlinePragmaActivation, inlinePragmaRuleMatchInfo,
setInlinePragmaActivation, setInlinePragmaRuleMatchInfo,
import FastString
import Outputable
+
+import Data.Data hiding (Fixity)
\end{code}
%************************************************************************
\begin{code}
data FunctionOrData = IsFunction | IsData
- deriving (Eq, Ord)
+ deriving (Eq, Ord, Data, Typeable)
instance Outputable FunctionOrData where
ppr IsFunction = text "(function)"
-- 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))
\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
\begin{code}
------------------------
data Fixity = Fixity Int FixityDirection
+ deriving (Data, Typeable)
instance Outputable Fixity where
ppr (Fixity prec dir) = hcat [ppr dir, space, int prec]
------------------------
data FixityDirection = InfixL | InfixR | InfixN
- deriving(Eq)
+ deriving (Eq, Data, Typeable)
instance Outputable FixityDirection where
ppr InfixL = ptext (sLit "infixl")
data Boxity
= Boxed
| Unboxed
- deriving( Eq )
+ deriving( Eq, Data, Typeable )
isBoxed :: Boxity -> Bool
isBoxed Boxed = True
\begin{code}
data RecFlag = Recursive
| NonRecursive
- deriving( Eq )
+ deriving( Eq, Data, Typeable )
isRec :: RecFlag -> Bool
isRec Recursive = True
%************************************************************************
%* *
-\subsection{Strictness indication}
+ Strictness indication
%* *
%************************************************************************
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}
%* *
%************************************************************************
| 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]
It's not possible to get that combination by *writing* something, so
if an Id has defaultInlinePragma it means the user didn't specify anything.
+If inl_inline = True, then the Id should have an InlineRule unfolding.
+
Note [CONLIKE pragma]
~~~~~~~~~~~~~~~~~~~~~
The ConLike constructor of a RuleMatchInfo is aimed at the following.
isFunLike FunLike = True
isFunLike _ = False
-defaultInlinePragma, neverInlinePragma, dfunInlinePragma :: InlinePragma
-defaultInlinePragma
- = InlinePragma { inl_act = AlwaysActive, inl_rule = FunLike, inl_inline = False }
-neverInlinePragma
- = InlinePragma { inl_act = NeverActive, inl_rule = FunLike, inl_inline = False }
-dfunInlinePragma
- = InlinePragma { inl_act = AlwaysActive, inl_rule = ConLike, inl_inline = False }
-
+defaultInlinePragma, alwaysInlinePragma, neverInlinePragma, dfunInlinePragma
+ :: InlinePragma
+defaultInlinePragma = InlinePragma { inl_act = AlwaysActive
+ , inl_rule = FunLike
+ , inl_inline = False
+ , inl_sat = Nothing }
+
+alwaysInlinePragma = defaultInlinePragma { inl_inline = True }
+neverInlinePragma = defaultInlinePragma { inl_act = NeverActive }
+
+-- 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
isInlinePragma :: InlinePragma -> Bool
isInlinePragma prag = inl_inline prag
+inlinePragmaSat :: InlinePragma -> Maybe Arity
+inlinePragmaSat = inl_sat
+
inlinePragmaActivation :: InlinePragma -> Activation
inlinePragmaActivation (InlinePragma { inl_act = activation }) = activation
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)
ppr FunLike = ptext (sLit "FUNLIKE")
instance Outputable InlinePragma where
- ppr (InlinePragma { inl_inline = inline, inl_act = activation, inl_rule = info })
- = pp_inline <+> pp_info <+> pp_activation
+ ppr (InlinePragma { inl_inline = inline, inl_act = activation
+ , inl_rule = info, inl_sat = mb_arity })
+ = pp_inl_act (inline, activation) <+> pp_sat <+> pp_info
where
- pp_inline | inline = ptext (sLit "INLINE")
- | otherwise = ptext (sLit "NOINLINE")
+ 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
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