\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,
+ CompilerPhase(..), PhaseNum,
+ Activation(..), isActive, isActiveIn,
+ isNeverActive, isAlwaysActive, isEarlyActive,
RuleMatchInfo(..), isConLike, isFunLike,
- InlinePragma(..), defaultInlinePragma, neverInlinePragma, dfunInlinePragma,
- isDefaultInlinePragma, isInlinePragma,
+ InlineSpec(..),
+ InlinePragma(..), defaultInlinePragma, alwaysInlinePragma,
+ neverInlinePragma, dfunInlinePragma,
+ isDefaultInlinePragma,
+ isInlinePragma, isInlinablePragma, isAnyInlinePragma,
+ inlinePragmaSpec, inlinePragmaSat,
inlinePragmaActivation, inlinePragmaRuleMatchInfo,
setInlinePragmaActivation, setInlinePragmaRuleMatchInfo,
- SuccessFlag(..), succeeded, failed, successIf
+ SuccessFlag(..), succeeded, failed, successIf,
+
+ FractionalLit(..)
) where
import FastString
import Outputable
+
+import Data.Data hiding (Fixity)
+import Data.Function (on)
\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
--
-- 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
%************************************************************************
%* *
-\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}
%* *
%************************************************************************
When a rule or inlining is active
\begin{code}
-type CompilerPhase = Int -- Compilation phase
- -- Phases decrease towards zero
- -- Zero is the last phase
+type PhaseNum = Int -- Compilation phase
+ -- Phases decrease towards zero
+ -- Zero is the last phase
+
+data CompilerPhase
+ = Phase PhaseNum
+ | InitialPhase -- The first phase -- number = infinity!
+
+instance Outputable CompilerPhase where
+ ppr (Phase n) = int n
+ ppr InitialPhase = ptext (sLit "InitialPhase")
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
+ | ActiveBefore PhaseNum -- Active only *before* this phase
+ | ActiveAfter PhaseNum -- Active in this phase and later
+ 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, Show )
+ -- Show needed for Lexer.x
data InlinePragma -- Note [InlinePragma]
= InlinePragma
- { inl_inline :: Bool -- True <=> INLINE,
- -- False <=> no pragma at all, or NOINLINE
+ { inl_inline :: InlineSpec
+
+ , 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 )
+
+data InlineSpec -- What the user's INLINE pragama looked like
+ = Inline
+ | Inlinable
+ | NoInline
+ | EmptyInlineSpec
+ deriving( Eq, Data, Typeable, Show )
+ -- Show needed for Lexer.x
\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 }
-
+isEmptyInlineSpec :: InlineSpec -> Bool
+isEmptyInlineSpec EmptyInlineSpec = True
+isEmptyInlineSpec _ = False
+
+defaultInlinePragma, alwaysInlinePragma, neverInlinePragma, dfunInlinePragma
+ :: InlinePragma
+defaultInlinePragma = InlinePragma { inl_act = AlwaysActive
+ , inl_rule = FunLike
+ , inl_inline = EmptyInlineSpec
+ , inl_sat = Nothing }
+
+alwaysInlinePragma = defaultInlinePragma { inl_inline = Inline }
+neverInlinePragma = defaultInlinePragma { inl_act = NeverActive }
+
+inlinePragmaSpec :: InlinePragma -> InlineSpec
+inlinePragmaSpec = inl_inline
+
+-- 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
, inl_rule = match_info
, inl_inline = inline })
- = not inline && isAlwaysActive activation && isFunLike match_info
+ = isEmptyInlineSpec inline && isAlwaysActive activation && isFunLike match_info
isInlinePragma :: InlinePragma -> Bool
-isInlinePragma prag = inl_inline prag
+isInlinePragma prag = case inl_inline prag of
+ Inline -> True
+ _ -> False
+
+isInlinablePragma :: InlinePragma -> Bool
+isInlinablePragma prag = case inl_inline prag of
+ Inlinable -> True
+ _ -> False
+
+isAnyInlinePragma :: InlinePragma -> Bool
+-- INLINE or INLINABLE
+isAnyInlinePragma prag = case inl_inline prag of
+ Inline -> True
+ Inlinable -> True
+ _ -> False
+
+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 ConLike = ptext (sLit "CONLIKE")
ppr FunLike = ptext (sLit "FUNLIKE")
+instance Outputable InlineSpec where
+ ppr Inline = ptext (sLit "INLINE")
+ ppr NoInline = ptext (sLit "NOINLINE")
+ ppr Inlinable = ptext (sLit "INLINABLE")
+ ppr EmptyInlineSpec = empty
+
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 })
+ = ppr inline <> pp_act inline activation <+> pp_sat <+> pp_info
where
- pp_inline | inline = ptext (sLit "INLINE")
- | otherwise = ptext (sLit "NOINLINE")
+ pp_act Inline AlwaysActive = empty
+ pp_act NoInline NeverActive = empty
+ pp_act _ act = 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
-isActive _ AlwaysActive = True
-isActive p (ActiveAfter n) = p <= n
-isActive p (ActiveBefore n) = p > n
+isActive InitialPhase AlwaysActive = True
+isActive InitialPhase (ActiveBefore {}) = True
+isActive InitialPhase _ = False
+isActive (Phase p) act = isActiveIn p act
+
+isActiveIn :: PhaseNum -> Activation -> Bool
+isActiveIn _ NeverActive = False
+isActiveIn _ AlwaysActive = True
+isActiveIn p (ActiveAfter n) = p <= n
+isActiveIn p (ActiveBefore n) = p > n
isNeverActive, isAlwaysActive, isEarlyActive :: Activation -> Bool
isNeverActive NeverActive = True
isEarlyActive _ = False
\end{code}
+
+
+\begin{code}
+-- Used to represent exactly the floating point literal that we encountered in
+-- the user's source program. This allows us to pretty-print exactly what the user
+-- wrote, which is important e.g. for floating point numbers that can't represented
+-- as Doubles (we used to via Double for pretty-printing). See also #2245.
+data FractionalLit
+ = FL { fl_text :: String -- How the value was written in the source
+ , fl_value :: Rational -- Numeric value of the literal
+ }
+ deriving (Data, Typeable)
+
+-- Comparison operations are needed when grouping literals
+-- for compiling pattern-matching (module MatchLit)
+
+instance Eq FractionalLit where
+ (==) = (==) `on` fl_value
+
+instance Ord FractionalLit where
+ compare = compare `on` fl_value
+\end{code}
projects / ghc-hetmet.git / blobdiff