-%
+
% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
%
\section[Id]{@Ids@: Value and constructor identifiers}
\begin{code}
-#include "HsVersions.h"
-
module Id (
-- TYPES
- GenId(..), -- *naughtily* used in some places (e.g., TcHsSyn)
- SYN_IE(Id), IdDetails,
+ GenId, -- Abstract
+ Id,
+ IdDetails(..), -- Exposed only to MkId
StrictnessMark(..),
- SYN_IE(ConTag), fIRST_TAG,
- SYN_IE(DataCon), SYN_IE(DictFun), SYN_IE(DictVar),
-
- -- CONSTRUCTION
- mkConstMethodId,
- mkDataCon,
- mkDefaultMethodId,
- mkDictFunId,
- mkIdWithNewUniq, mkIdWithNewName,
- mkImported,
- mkInstId,
- mkMethodSelId,
- mkRecordSelId,
- mkSuperDictSelId,
- mkSysLocal,
- mkTemplateLocals,
- mkTupleCon,
- mkUserId,
- mkUserLocal,
- mkWorkerId,
- mkPrimitiveId,
- setIdVisibility,
+ ConTag, fIRST_TAG,
+ DataCon, DictFun, DictVar,
+
+ -- Construction and modification
+ mkId, mkIdWithNewUniq, mkIdWithNewName, mkIdWithNewType,
+ mkTemplateLocals,
+ setIdVisibility, mkVanillaId,
-- DESTRUCTION (excluding pragmatic info)
idPrimRep,
idType,
idUnique,
+ idName,
+ -- Extracting pieces of particular sorts of Ids
dataConRepType,
dataConArgTys,
dataConNumFields,
-- PREDICATES
omitIfaceSigForId,
- cmpEqDataCon,
cmpId,
- cmpId_withSpecDataCon,
externallyVisibleId,
idHasNoFreeTyVars,
idWantsToBeINLINEd, getInlinePragma,
idMustBeINLINEd, idMustNotBeINLINEd,
isBottomingId,
- isConstMethodId,
- isConstMethodId_maybe,
- isDataCon, isAlgCon, isNewCon,
- isDefaultMethodId,
- isDefaultMethodId_maybe,
- isDictFunId,
- isImportedId,
- isRecordSelector,
- isMethodSelId_maybe,
+
+ isDataCon, isAlgCon, isNewCon, isTupleCon,
isNullaryDataCon,
- isSpecPragmaId,
- isSuperDictSelId_maybe,
+
+ isRecordSelector, isSpecPragmaId,
isPrimitiveId_maybe,
- isSysLocalId,
- isTupleCon,
- isWorkerId,
- isWrapperId,
- toplevelishId,
- unfoldingUnfriendlyId,
-
- -- SUBSTITUTION
- applyTypeEnvToId,
- apply_to_Id,
-
+
-- PRINTING and RENUMBERING
- addId,
- nmbrDataCon,
- nmbrId,
pprId,
showId,
- -- Specialialisation
- getIdSpecialisation,
- addIdSpecialisation,
-
-- UNFOLDING, ARITY, UPDATE, AND STRICTNESS STUFF (etc)
+ idInfo,
addIdUnfolding,
addIdArity,
addIdDemandInfo,
addIdStrictness,
addIdUpdateInfo,
- addIdDeforestInfo,
getIdArity,
getIdDemandInfo,
- getIdInfo,
getIdStrictness,
getIdUnfolding,
getIdUpdateInfo,
- getPragmaInfo,
- replaceIdInfo, replacePragmaInfo,
+ replaceIdInfo,
addInlinePragma, nukeNoInlinePragma, addNoInlinePragma,
+ getIdSpecialisation,
+ setIdSpecialisation,
-- IdEnvs AND IdSets
- SYN_IE(IdEnv), SYN_IE(GenIdSet), SYN_IE(IdSet),
+ IdEnv, GenIdSet, IdSet,
addOneToIdEnv,
addOneToIdSet,
combineIdEnvs,
intersectIdSets,
isEmptyIdSet,
isNullIdEnv,
- lookupIdEnv,
+ lookupIdEnv, lookupIdSubst,
lookupNoFailIdEnv,
mapIdEnv,
minusIdSet,
- mkIdEnv,
+ mkIdEnv, elemIdEnv,
mkIdSet,
modifyIdEnv,
modifyIdEnv_Directly,
unitIdSet
) where
-IMP_Ubiq()
-
-IMPORT_DELOOPER(IdLoop) -- for paranoia checking
-IMPORT_DELOOPER(TyLoop) -- for paranoia checking
+#include "HsVersions.h"
+import {-# SOURCE #-} CoreUnfold ( Unfolding )
+import CmdLineOpts ( opt_PprStyle_All )
import Bag
-import Class ( classOpString, SYN_IE(Class), GenClass, SYN_IE(ClassOp), GenClassOp )
import IdInfo
-import Maybes ( maybeToBool )
-import Name ( nameUnique, mkLocalName, mkSysLocalName, isLocalName,
- mkCompoundName, mkInstDeclName,
- isLocallyDefinedName, occNameString, modAndOcc,
- isLocallyDefined, changeUnique, isWiredInName,
- nameString, getOccString, setNameVisibility,
- isExported, ExportFlag(..), DefnInfo, Provenance,
- OccName(..), Name, SYN_IE(Module),
+import Name ( nameUnique, isLocalName, mkSysLocalName,
+ isWiredInName, setNameVisibility, changeUnique,
+ ExportFlag(..), Provenance,
+ OccName(..), Name, Module,
NamedThing(..)
)
+import PrimOp ( PrimOp )
import PrelMods ( pREL_TUP, pREL_BASE )
-import Lex ( mkTupNameStr )
-import FieldLabel ( fieldLabelName, FieldLabel(..){-instances-} )
-import PragmaInfo ( PragmaInfo(..) )
-#if __GLASGOW_HASKELL__ >= 202
-import PrimOp ( PrimOp )
-#endif
-import PprEnv -- ( SYN_IE(NmbrM), NmbrEnv(..) )
-import PprType ( getTypeString, specMaybeTysSuffix,
- nmbrType, nmbrTyVar,
- GenType, GenTyVar
- )
-import Pretty
-import MatchEnv ( MatchEnv )
-import SrcLoc --( mkBuiltinSrcLoc )
+import FieldLabel ( fieldLabelName, FieldLabel(..) )
+import SrcLoc ( mkBuiltinSrcLoc )
import TysWiredIn ( tupleTyCon )
-import TyCon --( TyCon, tyConDataCons )
-import Type {- ( mkSigmaTy, mkTyVarTys, mkFunTys, mkDictTy,
- applyTyCon, instantiateTy, mkForAllTys,
- tyVarsOfType, applyTypeEnvToTy, typePrimRep,
- GenType, SYN_IE(ThetaType), SYN_IE(TauType), SYN_IE(Type)
- ) -}
-import TyVar --( alphaTyVars, isEmptyTyVarSet, SYN_IE(TyVarEnv) )
-import Usage ( SYN_IE(UVar) )
+import TyCon ( TyCon, isDataTyCon, isNewTyCon )
+import Type ( mkSigmaTy, mkTyVarTys, mkFunTys,
+ mkTyConApp, instantiateTy, mkForAllTys,
+ tyVarsOfType, instantiateTy, typePrimRep,
+ instantiateTauTy,
+ ThetaType, TauType, Type, GenType
+ )
+import TyVar ( TyVar, alphaTyVars, isEmptyTyVarSet,
+ TyVarEnv, zipTyVarEnv, mkTyVarEnv
+ )
import UniqFM
import UniqSet -- practically all of it
-import Unique ( getBuiltinUniques, pprUnique, showUnique,
- incrUnique,
- Unique{-instance Ord3-}
- )
-import Outputable ( ifPprDebug, Outputable(..), PprStyle(..) )
-import Util {- ( mapAccumL, nOfThem, zipEqual, assoc,
- panic, panic#, pprPanic, assertPanic
- ) -}
+import Unique ( Unique, Uniquable(..), getBuiltinUniques )
+import Outputable
+import SrcLoc ( SrcLoc )
+import Util ( nOfThem, assoc )
+import GlaExts ( Int# )
\end{code}
Here are the @Id@ and @IdDetails@ datatypes; also see the notes that
ToDo: possibly cache other stuff in the single-constructor @Id@ type.
\begin{code}
-data GenId ty = Id
- Unique -- Key for fast comparison
- Name
- ty -- Id's type; used all the time;
- IdDetails -- Stuff about individual kinds of Ids.
- PragmaInfo -- Properties of this Id requested by programmer
- -- eg specialise-me, inline-me
- IdInfo -- Properties of this Id deduced by compiler
+data GenId ty = Id {
+ idUnique :: Unique, -- Key for fast comparison
+ idName :: Name,
+ idType :: ty, -- Id's type; used all the time;
+ idDetails :: IdDetails, -- Stuff about individual kinds of Ids.
+ idInfo :: IdInfo -- Properties of this Id deduced by compiler
+ }
type Id = GenId Type
---------------- Local values
- = LocalId Bool -- Local name; mentioned by the user
+ = VanillaId Bool -- Ordinary Id
-- True <=> no free type vars
- | SysLocalId Bool -- Local name; made up by the compiler
- -- as for LocalId
-
| PrimitiveId PrimOp -- The Id for a primitive operation
-
- | SpecPragmaId -- Local name; introduced by the compiler
- (Maybe Id) -- for explicit specid in pragma
- Bool -- as for LocalId
-
- ---------------- Global values
-
- | ImportedId -- Global name (Imported or Implicit); Id imported from an interface
+
---------------- Data constructors
[FieldLabel] -- Field labels for this constructor;
--length = 0 (not a record) or arity
- [TyVar] [(Class,Type)] -- Type vars and context for the data type decl
- [TyVar] [(Class,Type)] -- Ditto for the context of the constructor,
+ [TyVar] ThetaType -- Type vars and context for the data type decl
+ [TyVar] ThetaType -- Ditto for the context of the constructor,
-- the existentially quantified stuff
[Type] TyCon -- Args and result tycon
-- the type is:
| RecordSelId FieldLabel
- ---------------- Things to do with overloading
-
- | SuperDictSelId -- Selector for superclass dictionary
- Class -- The class (input dict)
- Class -- The superclass (result dict)
-
- | MethodSelId Class -- An overloaded class operation, with
- -- a fully polymorphic type. Its code
- -- just selects a method from the
- -- dictionary. The class.
- ClassOp -- The operation
-
- -- NB: The IdInfo for a MethodSelId has all the info about its
- -- related "constant method Ids", which are just
- -- specialisations of this general one.
-
- | DefaultMethodId -- Default method for a particular class op
- Class -- same class, <blah-blah> info as MethodSelId
- ClassOp -- (surprise, surprise)
- Bool -- True <=> I *know* this default method Id
- -- is a generated one that just says
- -- `error "No default method for <op>"'.
-
- -- see below
- | DictFunId Class -- A DictFun is uniquely identified
- Type -- by its class and type; this type has free type vars,
- -- whose identity is irrelevant. Eg Class = Eq
- -- Type = Tree a
- -- The "a" is irrelevant. As it is too painful to
- -- actually do comparisons that way, we kindly supply
- -- a Unique for that purpose.
-
- -- see below
- | ConstMethodId -- A method which depends only on the type of the
- -- instance, and not on any further dictionaries etc.
- Class -- Uniquely identified by:
- Type -- (class, type, classop) triple
- ClassOp
- Module -- module where instance came from
-
- | InstId -- An instance of a dictionary, class operation,
- -- or overloaded value (Local name)
- Bool -- as for LocalId
-
- | SpecId -- A specialisation of another Id
- Id -- Id of which this is a specialisation
- [Maybe Type] -- Types at which it is specialised;
- -- A "Nothing" says this type ain't relevant.
- Bool -- True <=> no free type vars; it's not enough
- -- to know about the unspec version, because
- -- we may specialise to a type w/ free tyvars
- -- (i.e., in one of the "Maybe Type" dudes).
-
--- Scheduled for deletion: SLPJ Nov 96
--- Nobody seems to depend on knowing this.
- | WorkerId -- A "worker" for some other Id
- Id -- Id for which this is a worker
+ | SpecPragmaId -- This guy exists only to make Ids that are
+ -- on the *LHS* of bindings created by SPECIALISE
+ -- pragmas; eg: s = f Int d
+ -- The SpecPragmaId is never itself mentioned; it
+ -- exists solely so that the specialiser will find
+ -- the call to f, and make specialised version of it.
+ -- The SpecPragmaId binding is discarded by the specialiser
+ -- when it gathers up overloaded calls.
+ -- Meanwhile, it is not discarded as dead code.
+
+
type ConTag = Int
type DictVar = Id
type DataCon = Id
\end{code}
-DictFunIds are generated from instance decls.
-\begin{verbatim}
- class Foo a where
- op :: a -> a -> Bool
-
- instance Foo a => Foo [a] where
- op = ...
-\end{verbatim}
-generates the dict fun id decl
-\begin{verbatim}
- dfun.Foo.[*] = \d -> ...
-\end{verbatim}
-The dfun id is uniquely named by the (class, type) pair. Notice, it
-isn't a (class,tycon) pair any more, because we may get manually or
-automatically generated specialisations of the instance decl:
-\begin{verbatim}
- instance Foo [Int] where
- op = ...
-\end{verbatim}
-generates
-\begin{verbatim}
- dfun.Foo.[Int] = ...
-\end{verbatim}
-The type variables in the name are irrelevant; we print them as stars.
-
-
-Constant method ids are generated from instance decls where
-there is no context; that is, no dictionaries are needed to
-construct the method. Example
-\begin{verbatim}
- instance Foo Int where
- op = ...
-\end{verbatim}
-Then we get a constant method
-\begin{verbatim}
- Foo.op.Int = ...
-\end{verbatim}
-
-It is possible, albeit unusual, to have a constant method
-for an instance decl which has type vars:
-\begin{verbatim}
- instance Foo [a] where
- op [] ys = True
- op (x:xs) ys = False
-\end{verbatim}
-We get the constant method
-\begin{verbatim}
- Foo.op.[*] = ...
-\end{verbatim}
-So a constant method is identified by a class/op/type triple.
-The type variables in the type are irrelevant.
-
-
-For Ids whose names must be known/deducible in other modules, we have
-to conjure up their worker's names (and their worker's worker's
-names... etc) in a known systematic way.
-
%************************************************************************
%* *
-\subsection[Id-documentation]{Documentation}
+\subsection{Construction}
%* *
%************************************************************************
-[A BIT DATED [WDP]]
-
-The @Id@ datatype describes {\em values}. The basic things we want to
-know: (1)~a value's {\em type} (@idType@ is a very common
-operation in the compiler); and (2)~what ``flavour'' of value it might
-be---for example, it can be terribly useful to know that a value is a
-class method.
-
-\begin{description}
-%----------------------------------------------------------------------
-\item[@AlgConId@:] For the data constructors declared by a @data@
-declaration. Their type is kept in {\em two} forms---as a regular
-@Type@ (in the usual place), and also in its constituent pieces (in
-the ``details''). We are frequently interested in those pieces.
-
-%----------------------------------------------------------------------
-\item[@TupleConId@:] This is just a special shorthand for @DataCons@ for
-the infinite family of tuples.
-
-%----------------------------------------------------------------------
-\item[@ImportedId@:] These are values defined outside this module.
-{\em Everything} we want to know about them must be stored here (or in
-their @IdInfo@).
-
-%----------------------------------------------------------------------
-\item[@MethodSelId@:] A selector from a dictionary; it may select either
-a method or a dictionary for one of the class's superclasses.
-
-%----------------------------------------------------------------------
-\item[@DictFunId@:]
-
-@mkDictFunId [a,b..] theta C T@ is the function derived from the
-instance declaration
-
- instance theta => C (T a b ..) where
- ...
-
-It builds function @Id@ which maps dictionaries for theta,
-to a dictionary for C (T a b ..).
-
-*Note* that with the ``Mark Jones optimisation'', the theta may
-include dictionaries for the immediate superclasses of C at the type
-(T a b ..).
-
-%----------------------------------------------------------------------
-\item[@InstId@:]
-
-%----------------------------------------------------------------------
-\item[@SpecId@:]
-
-%----------------------------------------------------------------------
-\item[@WorkerId@:]
-
-%----------------------------------------------------------------------
-\item[@LocalId@:] A purely-local value, e.g., a function argument,
-something defined in a @where@ clauses, ... --- but which appears in
-the original program text.
-
-%----------------------------------------------------------------------
-\item[@SysLocalId@:] Same as a @LocalId@, except does {\em not} appear in
-the original program text; these are introduced by the compiler in
-doing its thing.
-
-%----------------------------------------------------------------------
-\item[@SpecPragmaId@:] Introduced by the compiler to record
-Specialisation pragmas. It is dead code which MUST NOT be removed
-before specialisation.
-\end{description}
-
-Further remarks:
-\begin{enumerate}
-%----------------------------------------------------------------------
-\item
-
-@DataCons@ @TupleCons@, @Importeds@, @SuperDictSelIds@,
-@MethodSelIds@, @DictFunIds@, and @DefaultMethodIds@ have the following
-properties:
-\begin{itemize}
-\item
-They have no free type variables, so if you are making a
-type-variable substitution you don't need to look inside them.
-\item
-They are constants, so they are not free variables. (When the STG
-machine makes a closure, it puts all the free variables in the
-closure; the above are not required.)
-\end{itemize}
-Note that @InstIds@, @Locals@ and @SysLocals@ {\em may} have the above
-properties, but they may not.
-\end{enumerate}
+\begin{code}
+mkId :: Name -> ty -> IdDetails -> IdInfo -> GenId ty
+mkId name ty details info
+ = Id {idName = name, idUnique = nameUnique name, idType = ty,
+ idDetails = details, idInfo = info}
+
+mkVanillaId :: Name -> (GenType flexi) -> IdInfo -> GenId (GenType flexi)
+mkVanillaId name ty info
+ = Id {idName = name, idUnique = nameUnique name, idType = ty,
+ idDetails = VanillaId (isEmptyTyVarSet (tyVarsOfType ty)),
+ idInfo = info}
+
+mkIdWithNewUniq :: Id -> Unique -> Id
+mkIdWithNewUniq id uniq = id {idUnique = uniq, idName = changeUnique (idName id) uniq}
+
+mkIdWithNewName :: Id -> Name -> Id
+mkIdWithNewName id new_name
+ = id {idUnique = uniqueOf new_name, idName = new_name}
+
+mkIdWithNewType :: GenId ty1 -> ty2 -> GenId ty2
+mkIdWithNewType id ty = id {idType = ty}
+\end{code}
+
+
+Make some local @Ids@ for a template @CoreExpr@. These have bogus
+@Uniques@, but that's OK because the templates are supposed to be
+instantiated before use.
+
+\begin{code}
+mkTemplateLocals :: [Type] -> [Id]
+mkTemplateLocals tys
+ = zipWith3 mk (getBuiltinUniques (length tys)) tys [1..]
+ where
+ mk uniq ty n = mkVanillaId (mkSysLocalName uniq (_PK_ ("x"++show n)) mkBuiltinSrcLoc)
+ ty noIdInfo
+\end{code}
+
+
+\begin{code}
+-- See notes with setNameVisibility (Name.lhs)
+setIdVisibility :: Maybe Module -> Unique -> Id -> Id
+setIdVisibility maybe_mod u id
+ = id {idName = setNameVisibility maybe_mod u (idName id)}
+
+replaceIdInfo :: GenId ty -> IdInfo -> GenId ty
+replaceIdInfo id info = id {idInfo = info}
+\end{code}
%************************************************************************
%* *
%************************************************************************
\begin{code}
+fIRST_TAG :: ConTag
+fIRST_TAG = 1 -- Tags allocated from here for real constructors
+
-- isDataCon returns False for @newtype@ constructors
-isDataCon (Id _ _ _ (AlgConId _ _ _ _ _ _ _ _ tc) _ _) = isDataTyCon tc
-isDataCon (Id _ _ _ (TupleConId _) _ _) = True
-isDataCon (Id _ _ _ (SpecId unspec _ _) _ _) = isDataCon unspec
-isDataCon other = False
+isDataCon (Id {idDetails = AlgConId _ _ _ _ _ _ _ _ tc}) = isDataTyCon tc
+isDataCon (Id {idDetails = TupleConId _}) = True
+isDataCon other = False
-isNewCon (Id _ _ _ (AlgConId _ _ _ _ _ _ _ _ tc) _ _) = isNewTyCon tc
-isNewCon other = False
+isNewCon (Id {idDetails = AlgConId _ _ _ _ _ _ _ _ tc}) = isNewTyCon tc
+isNewCon other = False
-- isAlgCon returns True for @data@ or @newtype@ constructors
-isAlgCon (Id _ _ _ (AlgConId _ _ _ _ _ _ _ _ _) _ _) = True
-isAlgCon (Id _ _ _ (TupleConId _) _ _) = True
-isAlgCon (Id _ _ _ (SpecId unspec _ _) _ _) = isAlgCon unspec
-isAlgCon other = False
-
-isTupleCon (Id _ _ _ (TupleConId _) _ _) = True
-isTupleCon (Id _ _ _ (SpecId unspec _ _) _ _) = isTupleCon unspec
-isTupleCon other = False
-\end{code}
+isAlgCon (Id {idDetails = AlgConId _ _ _ _ _ _ _ _ _}) = True
+isAlgCon (Id {idDetails = TupleConId _}) = True
+isAlgCon other = False
-@toplevelishId@ tells whether an @Id@ {\em may} be defined in a nested
-@let(rec)@ (returns @False@), or whether it is {\em sure} to be
-defined at top level (returns @True@). This is used to decide whether
-the @Id@ is a candidate free variable. NB: you are only {\em sure}
-about something if it returns @True@!
+isTupleCon (Id {idDetails = TupleConId _}) = True
+isTupleCon other = False
+\end{code}
\begin{code}
-toplevelishId :: Id -> Bool
idHasNoFreeTyVars :: Id -> Bool
-toplevelishId (Id _ _ _ details _ _)
- = chk details
- where
- chk (AlgConId _ __ _ _ _ _ _ _) = True
- chk (TupleConId _) = True
- chk (RecordSelId _) = True
- chk ImportedId = True
- chk (SuperDictSelId _ _) = True
- chk (MethodSelId _ _) = True
- chk (DefaultMethodId _ _ _) = True
- chk (DictFunId _ _) = True
- chk (ConstMethodId _ _ _ _) = True
- chk (SpecId unspec _ _) = toplevelishId unspec
- -- depends what the unspecialised thing is
- chk (WorkerId unwrkr) = toplevelishId unwrkr
- chk (InstId _) = False -- these are local
- chk (LocalId _) = False
- chk (SysLocalId _) = False
- chk (SpecPragmaId _ _) = False
- chk (PrimitiveId _) = True
-
-idHasNoFreeTyVars (Id _ _ _ details _ info)
+idHasNoFreeTyVars (Id {idDetails = details})
= chk details
where
chk (AlgConId _ _ _ _ _ _ _ _ _) = True
- chk (TupleConId _) = True
- chk (RecordSelId _) = True
- chk ImportedId = True
- chk (SuperDictSelId _ _) = True
- chk (MethodSelId _ _) = True
- chk (DefaultMethodId _ _ _) = True
- chk (DictFunId _ _) = True
- chk (ConstMethodId _ _ _ _) = True
- chk (WorkerId unwrkr) = idHasNoFreeTyVars unwrkr
- chk (SpecId _ _ no_free_tvs) = no_free_tvs
- chk (InstId no_free_tvs) = no_free_tvs
- chk (LocalId no_free_tvs) = no_free_tvs
- chk (SysLocalId no_free_tvs) = no_free_tvs
- chk (SpecPragmaId _ no_free_tvs) = no_free_tvs
- chk (PrimitiveId _) = True
+ chk (TupleConId _) = True
+ chk (RecordSelId _) = True
+ chk (VanillaId no_free_tvs) = no_free_tvs
+ chk (PrimitiveId _) = True
+ chk SpecPragmaId = False -- Play safe
-- omitIfaceSigForId tells whether an Id's info is implied by other declarations,
-- so we don't need to put its signature in an interface file, even if it's mentioned
:: Id
-> Bool
-omitIfaceSigForId (Id _ name _ details _ _)
+omitIfaceSigForId (Id {idName = name, idDetails = details})
| isWiredInName name
= True
| otherwise
= case details of
- ImportedId -> True -- Never put imports in interface file
(PrimitiveId _) -> True -- Ditto, for primitives
-- This group is Ids that are implied by their type or class decl;
-- The dfun id must *not* be omitted, because it carries version info for
-- the instance decl
(AlgConId _ _ _ _ _ _ _ _ _) -> True
- (TupleConId _) -> True
- (RecordSelId _) -> True
- (SuperDictSelId _ _) -> True
- (MethodSelId _ _) -> True
+ (TupleConId _) -> True
+ (RecordSelId _) -> True
- other -> False -- Don't omit!
+ other -> False -- Don't omit!
-- NB DefaultMethodIds are not omitted
\end{code}
\begin{code}
-isImportedId (Id _ _ _ ImportedId _ _) = True
-isImportedId other = False
-
-isBottomingId (Id _ _ _ _ _ info) = bottomIsGuaranteed (strictnessInfo info)
-
-isSysLocalId (Id _ _ _ (SysLocalId _) _ _) = True
-isSysLocalId other = False
-
-isSpecPragmaId (Id _ _ _ (SpecPragmaId _ _) _ _) = True
-isSpecPragmaId other = False
-
-isMethodSelId_maybe (Id _ _ _ (MethodSelId cls op) _ _) = Just (cls,op)
-isMethodSelId_maybe _ = Nothing
-
-isDefaultMethodId (Id _ _ _ (DefaultMethodId _ _ _) _ _) = True
-isDefaultMethodId other = False
-
-isDefaultMethodId_maybe (Id _ _ _ (DefaultMethodId cls clsop err) _ _)
- = Just (cls, clsop, err)
-isDefaultMethodId_maybe other = Nothing
-
-isDictFunId (Id _ _ _ (DictFunId _ _) _ _) = True
-isDictFunId other = False
-
-isConstMethodId (Id _ _ _ (ConstMethodId _ _ _ _) _ _) = True
-isConstMethodId other = False
-
-isConstMethodId_maybe (Id _ _ _ (ConstMethodId cls ty clsop _) _ _)
- = Just (cls, ty, clsop)
-isConstMethodId_maybe other = Nothing
-
-isSuperDictSelId_maybe (Id _ _ _ (SuperDictSelId c sc) _ _) = Just (c, sc)
-isSuperDictSelId_maybe other_id = Nothing
-
-isWorkerId (Id _ _ _ (WorkerId _) _ _) = True
-isWorkerId other = False
-
-isWrapperId id = workerExists (getIdStrictness id)
-
-isPrimitiveId_maybe (Id _ _ _ (PrimitiveId primop) _ _) = Just primop
-isPrimitiveId_maybe other = Nothing
-\end{code}
-
-Tell them who my wrapper function is.
-\begin{code}
-{-LATER:
-myWrapperMaybe :: Id -> Maybe Id
+isBottomingId id = bottomIsGuaranteed (strictnessInfo (idInfo id))
-myWrapperMaybe (Id _ _ _ (WorkerId my_wrapper) _ _) = Just my_wrapper
-myWrapperMaybe other_id = Nothing
--}
-\end{code}
-
-\begin{code}
-unfoldingUnfriendlyId -- return True iff it is definitely a bad
- :: Id -- idea to export an unfolding that
- -> Bool -- mentions this Id. Reason: it cannot
- -- possibly be seen in another module.
+isPrimitiveId_maybe (Id {idDetails = PrimitiveId primop}) = Just primop
+isPrimitiveId_maybe other = Nothing
-unfoldingUnfriendlyId id = not (externallyVisibleId id)
+isSpecPragmaId (Id {idDetails = SpecPragmaId}) = True
+isSpecPragmaId _ = False
\end{code}
@externallyVisibleId@: is it true that another module might be
\begin{code}
externallyVisibleId :: Id -> Bool
-externallyVisibleId id@(Id _ name _ _ _ _) = not (isLocalName name)
+externallyVisibleId id = not (isLocalName (idName id))
-- not local => global => externally visible
\end{code}
-CLAIM (not ASSERTed) for @applyTypeEnvToId@ and @applySubstToId@:
-`Top-levelish Ids'' cannot have any free type variables, so applying
-the type-env cannot have any effect. (NB: checked in CoreLint?)
-
-The special casing is in @applyTypeEnvToId@, not @apply_to_Id@, as the
-former ``should be'' the usual crunch point.
\begin{code}
-type TypeEnv = TyVarEnv Type
-
-applyTypeEnvToId :: TypeEnv -> Id -> Id
-
-applyTypeEnvToId type_env id@(Id _ _ ty _ _ _)
- | idHasNoFreeTyVars id
- = id
- | otherwise
- = apply_to_Id ( \ ty ->
- applyTypeEnvToTy type_env ty
- ) id
+idPrimRep id = typePrimRep (idType id)
\end{code}
-\begin{code}
-apply_to_Id :: (Type -> Type) -> Id -> Id
-
-apply_to_Id ty_fn (Id u n ty details prag info)
- = let
- new_ty = ty_fn ty
- in
- Id u n new_ty (apply_to_details details) prag (apply_to_IdInfo ty_fn info)
- where
- apply_to_details (SpecId unspec ty_maybes no_ftvs)
- = let
- new_unspec = apply_to_Id ty_fn unspec
- new_maybes = map apply_to_maybe ty_maybes
- in
- SpecId new_unspec new_maybes (no_free_tvs ty)
- -- ToDo: gratuitous recalc no_ftvs???? (also InstId)
- where
- apply_to_maybe Nothing = Nothing
- apply_to_maybe (Just ty) = Just (ty_fn ty)
-
- apply_to_details (WorkerId unwrkr)
- = let
- new_unwrkr = apply_to_Id ty_fn unwrkr
- in
- WorkerId new_unwrkr
-
- apply_to_details other = other
-\end{code}
-
-Sadly, I don't think the one using the magic typechecker substitution
-can be done with @apply_to_Id@. Here we go....
-
-Strictness is very important here. We can't leave behind thunks
-with pointers to the substitution: it {\em must} be single-threaded.
-
-\begin{code}
-{-LATER:
-applySubstToId :: Subst -> Id -> (Subst, Id)
-
-applySubstToId subst id@(Id u n ty info details)
- -- *cannot* have a "idHasNoFreeTyVars" get-out clause
- -- because, in the typechecker, we are still
- -- *concocting* the types.
- = case (applySubstToTy subst ty) of { (s2, new_ty) ->
- case (applySubstToIdInfo s2 info) of { (s3, new_info) ->
- case (apply_to_details s3 new_ty details) of { (s4, new_details) ->
- (s4, Id u n new_ty new_info new_details) }}}
- where
- apply_to_details subst _ (InstId inst no_ftvs)
- = case (applySubstToInst subst inst) of { (s2, new_inst) ->
- (s2, InstId new_inst no_ftvs{-ToDo:right???-}) }
-
- apply_to_details subst new_ty (SpecId unspec ty_maybes _)
- = case (applySubstToId subst unspec) of { (s2, new_unspec) ->
- case (mapAccumL apply_to_maybe s2 ty_maybes) of { (s3, new_maybes) ->
- (s3, SpecId new_unspec new_maybes (no_free_tvs new_ty)) }}
- -- NB: recalc no_ftvs (I think it's necessary (?) WDP 95/04)
- where
- apply_to_maybe subst Nothing = (subst, Nothing)
- apply_to_maybe subst (Just ty)
- = case (applySubstToTy subst ty) of { (s2, new_ty) ->
- (s2, Just new_ty) }
-
- apply_to_details subst _ (WorkerId unwrkr)
- = case (applySubstToId subst unwrkr) of { (s2, new_unwrkr) ->
- (s2, WorkerId new_unwrkr) }
-
- apply_to_details subst _ other = (subst, other)
--}
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[Id-type-funs]{Type-related @Id@ functions}
-%* *
-%************************************************************************
-
-\begin{code}
-idType :: GenId ty -> ty
-
-idType (Id _ _ ty _ _ _) = ty
-\end{code}
-
-\begin{code}
-{-LATER:
-getMentionedTyConsAndClassesFromId :: Id -> (Bag TyCon, Bag Class)
-
-getMentionedTyConsAndClassesFromId id
- = getMentionedTyConsAndClassesFromType (idType id)
--}
-\end{code}
-
-\begin{code}
-idPrimRep i = typePrimRep (idType i)
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[Id-overloading]{Functions related to overloading}
-%* *
-%************************************************************************
-
-\begin{code}
-mkSuperDictSelId u clas sc ty
- = addStandardIdInfo $
- Id u name ty details NoPragmaInfo noIdInfo
- where
- name = mkCompoundName name_fn u (getName clas)
- details = SuperDictSelId clas sc
- name_fn clas_str = SLIT("scsel_") _APPEND_ clas_str _APPEND_ mod _APPEND_ occNameString occ
- (mod,occ) = modAndOcc sc
-
- -- For method selectors the clean thing to do is
- -- to give the method selector the same name as the class op itself.
-mkMethodSelId op_name rec_c op ty
- = addStandardIdInfo $
- Id (uniqueOf op_name) op_name ty (MethodSelId rec_c op) NoPragmaInfo noIdInfo
-
-mkDefaultMethodId dm_name rec_c op gen ty
- = Id (uniqueOf dm_name) dm_name ty (DefaultMethodId rec_c op gen) NoPragmaInfo noIdInfo
-
-mkDictFunId dfun_name full_ty clas ity
- = Id (nameUnique dfun_name) dfun_name full_ty details NoPragmaInfo noIdInfo
- where
- details = DictFunId clas ity
-
-mkConstMethodId uniq clas op ity full_ty from_here locn mod info
- = Id uniq name full_ty details NoPragmaInfo info
- where
- name = mkInstDeclName uniq mod (VarOcc occ_name) locn from_here
- details = ConstMethodId clas ity op mod
- occ_name = classOpString op _APPEND_
- SLIT("_cm_") _APPEND_ renum_type_string full_ty ity
-
-mkWorkerId u unwrkr ty info
- = Id u name ty details NoPragmaInfo info
- where
- name = mkCompoundName name_fn u (getName unwrkr)
- details = WorkerId unwrkr
- name_fn wkr_str = SLIT("$w") _APPEND_ wkr_str
-
-mkInstId u ty name
- = Id u name ty (InstId (no_free_tvs ty)) NoPragmaInfo noIdInfo
-
-{-LATER:
-getConstMethodId clas op ty
- = -- constant-method info is hidden in the IdInfo of
- -- the class-op id (as mentioned up above).
- let
- sel_id = getMethodSelId clas op
- in
- case (lookupConstMethodId (getIdSpecialisation sel_id) ty) of
- Just xx -> xx
- Nothing -> pprError "ERROR: getConstMethodId:" (vcat [
- hsep [ppr PprDebug ty, ppr PprDebug ops, ppr PprDebug op_ids,
- ppr PprDebug sel_id],
- text "(This can arise if an interface pragma refers to an instance",
- text "but there is no imported interface which *defines* that instance.",
- text "The info above, however ugly, should indicate what else you need to import."
- ])
--}
-
-
-renum_type_string full_ty ity
- = initNmbr (
- nmbrType full_ty `thenNmbr` \ _ -> -- so all the tyvars get added to renumbering...
- nmbrType ity `thenNmbr` \ rn_ity ->
- returnNmbr (getTypeString rn_ity)
- )
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[local-funs]{@LocalId@-related functions}
-%* *
-%************************************************************************
-
-\begin{code}
-mkImported n ty info = Id (nameUnique n) n ty ImportedId NoPragmaInfo info
-
-mkPrimitiveId n ty primop
- = addStandardIdInfo $
- Id (nameUnique n) n ty (PrimitiveId primop) IMustBeINLINEd noIdInfo
- -- The pragma @IMustBeINLINEd@ says that this Id absolutely must be inlined.
- -- It's only true for primitives, because we don't want to make a closure for each of them.
-\end{code}
-
-\begin{code}
-
-type MyTy a b = GenType (GenTyVar a) b
-type MyId a b = GenId (MyTy a b)
-
-no_free_tvs ty = isEmptyTyVarSet (tyVarsOfType ty)
-
--- SysLocal: for an Id being created by the compiler out of thin air...
--- UserLocal: an Id with a name the user might recognize...
-mkSysLocal :: FAST_STRING -> Unique -> MyTy a b -> SrcLoc -> MyId a b
-mkUserLocal :: OccName -> Unique -> MyTy a b -> SrcLoc -> MyId a b
-
-mkSysLocal str uniq ty loc
- = Id uniq (mkSysLocalName uniq str loc) ty (SysLocalId (no_free_tvs ty)) NoPragmaInfo noIdInfo
-
-mkUserLocal occ uniq ty loc
- = Id uniq (mkLocalName uniq occ loc) ty (LocalId (no_free_tvs ty)) NoPragmaInfo noIdInfo
-
-mkUserId :: Name -> MyTy a b -> PragmaInfo -> MyId a b
-mkUserId name ty pragma_info
- = Id (nameUnique name) name ty (LocalId (no_free_tvs ty)) pragma_info noIdInfo
-\end{code}
-
-
-\begin{code}
-{-LATER:
-
--- for a SpecPragmaId being created by the compiler out of thin air...
-mkSpecPragmaId :: OccName -> Unique -> Type -> Maybe Id -> SrcLoc -> Id
-mkSpecPragmaId str uniq ty specid loc
- = Id uniq (mkShortName str loc) ty noIdInfo (SpecPragmaId specid (no_free_tvs ty))
-
--- for new SpecId
-mkSpecId u unspec ty_maybes ty info
- = ASSERT(not (maybeToBool (isSpecId_maybe unspec)))
- Id u n ty info (SpecId unspec ty_maybes (no_free_tvs ty))
-
--- Specialised version of constructor: only used in STG and code generation
--- Note: The specialsied Id has the same unique as the unspeced Id
-
-mkSameSpecCon ty_maybes unspec@(Id u n ty info details)
- = ASSERT(isDataCon unspec)
- ASSERT(not (maybeToBool (isSpecId_maybe unspec)))
- Id u n new_ty info (SpecId unspec ty_maybes (no_free_tvs new_ty))
- where
- new_ty = specialiseTy ty ty_maybes 0
-
-localiseId :: Id -> Id
-localiseId id@(Id u n ty info details)
- = Id u (mkShortName name loc) ty info (LocalId (no_free_tvs ty))
- where
- name = getOccName id
- loc = getSrcLoc id
--}
-
--- See notes with setNameVisibility (Name.lhs)
-setIdVisibility :: Module -> Id -> Id
-setIdVisibility mod (Id uniq name ty details prag info)
- = Id uniq (setNameVisibility mod name) ty details prag info
-
-mkIdWithNewUniq :: Id -> Unique -> Id
-mkIdWithNewUniq (Id _ n ty details prag info) u
- = Id u (changeUnique n u) ty details prag info
-
-mkIdWithNewName :: Id -> Name -> Id
-mkIdWithNewName (Id _ _ ty details prag info) new_name
- = Id (uniqueOf new_name) new_name ty details prag info
-\end{code}
-
-Make some local @Ids@ for a template @CoreExpr@. These have bogus
-@Uniques@, but that's OK because the templates are supposed to be
-instantiated before use.
-\begin{code}
-mkTemplateLocals :: [Type] -> [Id]
-mkTemplateLocals tys
- = zipWith (\ u -> \ ty -> mkSysLocal SLIT("tpl") u ty mkBuiltinSrcLoc)
- (getBuiltinUniques (length tys))
- tys
-\end{code}
-
-\begin{code}
-getIdInfo :: GenId ty -> IdInfo
-getPragmaInfo :: GenId ty -> PragmaInfo
-
-getIdInfo (Id _ _ _ _ _ info) = info
-getPragmaInfo (Id _ _ _ _ info _) = info
-
-replaceIdInfo :: Id -> IdInfo -> Id
-replaceIdInfo (Id u n ty details pinfo _) info = Id u n ty details pinfo info
-
-replacePragmaInfo :: Id -> PragmaInfo -> Id
-replacePragmaInfo (Id u sn ty details _ info) prag = Id u sn ty details prag info
-\end{code}
%************************************************************************
%* *
\begin{code}
getIdArity :: Id -> ArityInfo
-getIdArity id@(Id _ _ _ _ _ id_info)
- = arityInfo id_info
+getIdArity id = arityInfo (idInfo id)
addIdArity :: Id -> ArityInfo -> Id
-addIdArity (Id u n ty details pinfo info) arity
- = Id u n ty details pinfo (info `addArityInfo` arity)
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[Id-arities]{Deforestation related functions}
-%* *
-%************************************************************************
-
-\begin{code}
-addIdDeforestInfo :: Id -> DeforestInfo -> Id
-addIdDeforestInfo (Id u n ty details pinfo info) def_info
- = Id u n ty details pinfo (info `addDeforestInfo` def_info)
+addIdArity id@(Id {idInfo = info}) arity
+ = id {idInfo = arity `setArityInfo` info}
\end{code}
%************************************************************************
%* *
%************************************************************************
-\begin{code}
-mkDataCon :: Name
- -> [StrictnessMark] -> [FieldLabel]
- -> [TyVar] -> ThetaType
- -> [TyVar] -> ThetaType
- -> [TauType] -> TyCon
- -> Id
- -- can get the tag and all the pieces of the type from the Type
-
-mkDataCon n stricts fields tvs ctxt con_tvs con_ctxt args_tys tycon
- = ASSERT(length stricts == length args_tys)
- addStandardIdInfo data_con
- where
- -- NB: data_con self-recursion; should be OK as tags are not
- -- looked at until late in the game.
- data_con
- = Id (nameUnique n)
- n
- data_con_ty
- (AlgConId data_con_tag stricts fields tvs ctxt con_tvs con_ctxt args_tys tycon)
- IWantToBeINLINEd -- Always inline constructors if possible
- noIdInfo
-
- data_con_tag = assoc "mkDataCon" (data_con_family `zip` [fIRST_TAG..]) data_con
- data_con_family = tyConDataCons tycon
-
- data_con_ty
- = mkSigmaTy (tvs++con_tvs) (ctxt++con_ctxt)
- (mkFunTys args_tys (applyTyCon tycon (mkTyVarTys tvs)))
-
-
-mkTupleCon :: Arity -> Name -> Type -> Id
-mkTupleCon arity name ty
- = addStandardIdInfo tuple_id
- where
- tuple_id = Id (nameUnique name) name ty
- (TupleConId arity)
- IWantToBeINLINEd -- Always inline constructors if possible
- noIdInfo
-
-fIRST_TAG :: ConTag
-fIRST_TAG = 1 -- Tags allocated from here for real constructors
-\end{code}
dataConNumFields gives the number of actual fields in the
{\em representation} of the data constructor. This may be more than appear
\begin{code}
dataConNumFields id
- = ASSERT(isDataCon id)
+ = ASSERT( if (isDataCon id) then True else
+ pprTrace "dataConNumFields" (ppr id) False )
case (dataConSig id) of { (_, _, _, con_theta, arg_tys, _) ->
length con_theta + length arg_tys }
isNullaryDataCon con = dataConNumFields con == 0 -- function of convenience
+
\end{code}
\begin{code}
dataConTag :: DataCon -> ConTag -- will panic if not a DataCon
-dataConTag (Id _ _ _ (AlgConId tag _ _ _ _ _ _ _ _) _ _) = tag
-dataConTag (Id _ _ _ (TupleConId _) _ _) = fIRST_TAG
-dataConTag (Id _ _ _ (SpecId unspec _ _) _ _) = dataConTag unspec
+dataConTag (Id {idDetails = AlgConId tag _ _ _ _ _ _ _ _}) = tag
+dataConTag (Id {idDetails = TupleConId _}) = fIRST_TAG
dataConTyCon :: DataCon -> TyCon -- will panic if not a DataCon
-dataConTyCon (Id _ _ _ (AlgConId _ _ _ _ _ _ _ _ tycon) _ _) = tycon
-dataConTyCon (Id _ _ _ (TupleConId a) _ _) = tupleTyCon a
+dataConTyCon (Id {idDetails = AlgConId _ _ _ _ _ _ _ _ tycon}) = tycon
+dataConTyCon (Id {idDetails = TupleConId a}) = tupleTyCon a
dataConSig :: DataCon -> ([TyVar], ThetaType, [TyVar], ThetaType, [TauType], TyCon)
-- will panic if not a DataCon
-dataConSig (Id _ _ _ (AlgConId _ _ _ tyvars theta con_tyvars con_theta arg_tys tycon) _ _)
+dataConSig (Id {idDetails = AlgConId _ _ _ tyvars theta con_tyvars con_theta arg_tys tycon})
= (tyvars, theta, con_tyvars, con_theta, arg_tys, tycon)
-dataConSig (Id _ _ _ (TupleConId arity) _ _)
+dataConSig (Id {idDetails = TupleConId arity})
= (tyvars, [], [], [], tyvar_tys, tupleTyCon arity)
where
tyvars = take arity alphaTyVars
-- dataConRepType returns the type of the representation of a contructor
-- This may differ from the type of the contructor Id itself for two reasons:
-- a) the constructor Id may be overloaded, but the dictionary isn't stored
+-- e.g. data Eq a => T a = MkT a a
+--
-- b) the constructor may store an unboxed version of a strict field.
+--
-- Here's an example illustrating both:
-- data Ord a => T a = MkT Int! a
-- Here
-- Trep :: Int# -> a -> T a
-- Actually, the unboxed part isn't implemented yet!
-dataConRepType :: GenId (GenType tv u) -> GenType tv u
-dataConRepType con
- = mkForAllTys tyvars tau
- where
- (tyvars, theta, tau) = splitSigmaTy (idType con)
+dataConRepType :: Id -> Type
+dataConRepType (Id {idDetails = AlgConId _ _ _ tyvars theta con_tyvars con_theta arg_tys tycon})
+ = mkForAllTys (tyvars++con_tyvars)
+ (mkFunTys arg_tys (mkTyConApp tycon (mkTyVarTys tyvars)))
+dataConRepType other_id
+ = ASSERT( isDataCon other_id )
+ idType other_id
dataConFieldLabels :: DataCon -> [FieldLabel]
-dataConFieldLabels (Id _ _ _ (AlgConId _ _ fields _ _ _ _ _ _) _ _) = fields
-dataConFieldLabels (Id _ _ _ (TupleConId _) _ _) = []
+dataConFieldLabels (Id {idDetails = AlgConId _ _ fields _ _ _ _ _ _}) = fields
+dataConFieldLabels (Id {idDetails = TupleConId _}) = []
+#ifdef DEBUG
+dataConFieldLabels x@(Id {idDetails = idt}) =
+ panic ("dataConFieldLabel: " ++
+ (case idt of
+ VanillaId _ -> "l"
+ PrimitiveId _ -> "p"
+ RecordSelId _ -> "r"))
+#endif
dataConStrictMarks :: DataCon -> [StrictnessMark]
-dataConStrictMarks (Id _ _ _ (AlgConId _ stricts _ _ _ _ _ _ _) _ _) = stricts
-dataConStrictMarks (Id _ _ _ (TupleConId arity) _ _)
- = nOfThem arity NotMarkedStrict
+dataConStrictMarks (Id {idDetails = AlgConId _ stricts _ _ _ _ _ _ _}) = stricts
+dataConStrictMarks (Id {idDetails = TupleConId arity}) = nOfThem arity NotMarkedStrict
dataConRawArgTys :: DataCon -> [TauType] -- a function of convenience
dataConRawArgTys con = case (dataConSig con) of { (_,_, _, _, arg_tys,_) -> arg_tys }
= map (instantiateTy tenv) arg_tys
where
(tyvars, _, _, _, arg_tys, _) = dataConSig con_id
- tenv = zipEqual "dataConArgTys" tyvars inst_tys
+ tenv = zipTyVarEnv tyvars inst_tys
\end{code}
\begin{code}
-mkRecordSelId field_label selector_ty
- = addStandardIdInfo $ -- Record selectors have a standard unfolding
- Id (nameUnique name)
- name
- selector_ty
- (RecordSelId field_label)
- NoPragmaInfo
- noIdInfo
- where
- name = fieldLabelName field_label
-
recordSelectorFieldLabel :: Id -> FieldLabel
-recordSelectorFieldLabel (Id _ _ _ (RecordSelId lbl) _ _) = lbl
+recordSelectorFieldLabel (Id {idDetails = RecordSelId lbl}) = lbl
-isRecordSelector (Id _ _ _ (RecordSelId lbl) _ _) = True
-isRecordSelector other = False
+isRecordSelector (Id {idDetails = RecordSelId lbl}) = True
+isRecordSelector other = False
\end{code}
-Data type declarations are of the form:
-\begin{verbatim}
-data Foo a b = C1 ... | C2 ... | ... | Cn ...
-\end{verbatim}
-For each constructor @Ci@, we want to generate a curried function; so, e.g., for
-@C1 x y z@, we want a function binding:
-\begin{verbatim}
-fun_C1 = /\ a -> /\ b -> \ [x, y, z] -> Con C1 [a, b] [x, y, z]
-\end{verbatim}
-Notice the ``big lambdas'' and type arguments to @Con@---we are producing
-2nd-order polymorphic lambda calculus with explicit types.
-
%************************************************************************
%* *
\subsection[unfolding-Ids]{Functions related to @Ids@' unfoldings}
\begin{code}
getIdUnfolding :: Id -> Unfolding
-getIdUnfolding (Id _ _ _ _ _ info) = unfoldInfo info
+getIdUnfolding id = unfoldingInfo (idInfo id)
addIdUnfolding :: Id -> Unfolding -> Id
-addIdUnfolding id@(Id u n ty details prag info) unfolding
- = Id u n ty details prag (info `addUnfoldInfo` unfolding)
+addIdUnfolding id@(Id {idInfo = info}) unfolding
+ = id {idInfo = unfolding `setUnfoldingInfo` info}
\end{code}
The inline pragma tells us to be very keen to inline this Id, but it's still
OK not to if optimisation is switched off.
\begin{code}
-getInlinePragma :: Id -> PragmaInfo
-getInlinePragma (Id _ _ _ _ prag _) = prag
+getInlinePragma :: Id -> InlinePragInfo
+getInlinePragma id = inlinePragInfo (idInfo id)
idWantsToBeINLINEd :: Id -> Bool
-idWantsToBeINLINEd (Id _ _ _ _ IWantToBeINLINEd _) = True
-idWantsToBeINLINEd (Id _ _ _ _ IMustBeINLINEd _) = True
-idWantsToBeINLINEd _ = False
+idWantsToBeINLINEd id = case getInlinePragma id of
+ IWantToBeINLINEd -> True
+ IMustBeINLINEd -> True
+ other -> False
-idMustNotBeINLINEd (Id _ _ _ _ IMustNotBeINLINEd _) = True
-idMustNotBeINLINEd _ = False
+idMustNotBeINLINEd id = case getInlinePragma id of
+ IMustNotBeINLINEd -> True
+ other -> False
-idMustBeINLINEd (Id _ _ _ _ IMustBeINLINEd _) = True
-idMustBeINLINEd _ = False
+idMustBeINLINEd id = case getInlinePragma id of
+ IMustBeINLINEd -> True
+ other -> False
addInlinePragma :: Id -> Id
-addInlinePragma (Id u sn ty details _ info)
- = Id u sn ty details IWantToBeINLINEd info
+addInlinePragma id@(Id {idInfo = info})
+ = id {idInfo = setInlinePragInfo IWantToBeINLINEd info}
nukeNoInlinePragma :: Id -> Id
-nukeNoInlinePragma id@(Id u sn ty details IMustNotBeINLINEd info)
- = Id u sn ty details NoPragmaInfo info
-nukeNoInlinePragma id@(Id u sn ty details _ info) = id -- Otherwise no-op
+nukeNoInlinePragma id@(Id {idInfo = info})
+ = case inlinePragInfo info of
+ IMustNotBeINLINEd -> id {idInfo = setInlinePragInfo NoPragmaInfo info}
+ other -> id
addNoInlinePragma :: Id -> Id
-addNoInlinePragma id@(Id u sn ty details _ info)
- = Id u sn ty details IMustNotBeINLINEd info
+addNoInlinePragma id@(Id {idInfo = info})
+ = id {idInfo = IMustNotBeINLINEd `setInlinePragInfo` info}
+
+mustInlineInfo = IMustBeINLINEd `setInlinePragInfo` noIdInfo
+wantToInlineInfo = IWantToBeINLINEd `setInlinePragInfo` noIdInfo
\end{code}
\begin{code}
getIdDemandInfo :: Id -> DemandInfo
-getIdDemandInfo (Id _ _ _ _ _ info) = demandInfo info
+getIdDemandInfo id = demandInfo (idInfo id)
addIdDemandInfo :: Id -> DemandInfo -> Id
-addIdDemandInfo (Id u n ty details prags info) demand_info
- = Id u n ty details prags (info `addDemandInfo` demand_info)
-\end{code}
+addIdDemandInfo id@(Id {idInfo = info}) demand_info
+ = id {idInfo = demand_info `setDemandInfo` info}
+\end{code}p
\begin{code}
getIdUpdateInfo :: Id -> UpdateInfo
-getIdUpdateInfo (Id _ _ _ _ _ info) = updateInfo info
+getIdUpdateInfo id = updateInfo (idInfo id)
addIdUpdateInfo :: Id -> UpdateInfo -> Id
-addIdUpdateInfo (Id u n ty details prags info) upd_info
- = Id u n ty details prags (info `addUpdateInfo` upd_info)
+addIdUpdateInfo id@(Id {idInfo = info}) upd_info
+ = id {idInfo = upd_info `setUpdateInfo` info}
\end{code}
\begin{code}
-{- LATER:
-getIdArgUsageInfo :: Id -> ArgUsageInfo
-getIdArgUsageInfo (Id u n ty info details) = argUsageInfo info
-
-addIdArgUsageInfo :: Id -> ArgUsageInfo -> Id
-addIdArgUsageInfo (Id u n ty info details) au_info
- = Id u n ty (info `addArgusageInfo` au_info) details
--}
-\end{code}
+getIdSpecialisation :: Id -> IdSpecEnv
+getIdSpecialisation id = specInfo (idInfo id)
-\begin{code}
-{- LATER:
-getIdFBTypeInfo :: Id -> FBTypeInfo
-getIdFBTypeInfo (Id u n ty info details) = fbTypeInfo info
-
-addIdFBTypeInfo :: Id -> FBTypeInfo -> Id
-addIdFBTypeInfo (Id u n ty info details) upd_info
- = Id u n ty (info `addFBTypeInfo` upd_info) details
--}
+setIdSpecialisation :: Id -> IdSpecEnv -> Id
+setIdSpecialisation id@(Id {idInfo = info}) spec_info
+ = id {idInfo = spec_info `setSpecInfo` info}
\end{code}
\begin{code}
-getIdSpecialisation :: Id -> SpecEnv
-getIdSpecialisation (Id _ _ _ _ _ info) = specInfo info
-
-addIdSpecialisation :: Id -> SpecEnv -> Id
-addIdSpecialisation (Id u n ty details prags info) spec_info
- = Id u n ty details prags (info `addSpecInfo` spec_info)
-\end{code}
-
-Strictness: we snaffle the info out of the IdInfo.
-
-\begin{code}
-getIdStrictness :: Id -> StrictnessInfo Id
-
-getIdStrictness (Id _ _ _ _ _ info) = strictnessInfo info
+getIdStrictness :: Id -> StrictnessInfo
+getIdStrictness id = strictnessInfo (idInfo id)
-addIdStrictness :: Id -> StrictnessInfo Id -> Id
-addIdStrictness (Id u n ty details prags info) strict_info
- = Id u n ty details prags (info `addStrictnessInfo` strict_info)
+addIdStrictness :: Id -> StrictnessInfo -> Id
+addIdStrictness id@(Id {idInfo = info}) strict_info
+ = id {idInfo = strict_info `setStrictnessInfo` info}
\end{code}
%************************************************************************
Comparison: equality and ordering---this stuff gets {\em hammered}.
\begin{code}
-cmpId (Id u1 _ _ _ _ _) (Id u2 _ _ _ _ _) = cmp u1 u2
--- short and very sweet
+cmpId (Id {idUnique = u1}) (Id {idUnique = u2}) = compare u1 u2
\end{code}
\begin{code}
-instance Ord3 (GenId ty) where
- cmp = cmpId
-
instance Eq (GenId ty) where
- a == b = case (a `cmp` b) of { EQ_ -> True; _ -> False }
- a /= b = case (a `cmp` b) of { EQ_ -> False; _ -> True }
+ a == b = case (a `compare` b) of { EQ -> True; _ -> False }
+ a /= b = case (a `compare` b) of { EQ -> False; _ -> True }
instance Ord (GenId ty) where
- a <= b = case (a `cmp` b) of { LT_ -> True; EQ_ -> True; GT__ -> False }
- a < b = case (a `cmp` b) of { LT_ -> True; EQ_ -> False; GT__ -> False }
- a >= b = case (a `cmp` b) of { LT_ -> False; EQ_ -> True; GT__ -> True }
- a > b = case (a `cmp` b) of { LT_ -> False; EQ_ -> False; GT__ -> True }
- _tagCmp a b = case (a `cmp` b) of { LT_ -> _LT; EQ_ -> _EQ; GT__ -> _GT }
-\end{code}
-
-@cmpId_withSpecDataCon@ ensures that any spectys are taken into
-account when comparing two data constructors. We need to do this
-because a specialised data constructor has the same Unique as its
-unspecialised counterpart.
-
-\begin{code}
-cmpId_withSpecDataCon :: Id -> Id -> TAG_
-
-cmpId_withSpecDataCon id1 id2
- | eq_ids && isDataCon id1 && isDataCon id2
- = cmpEqDataCon id1 id2
-
- | otherwise
- = cmp_ids
- where
- cmp_ids = cmpId id1 id2
- eq_ids = case cmp_ids of { EQ_ -> True; other -> False }
-
-cmpEqDataCon (Id _ _ _ (SpecId _ mtys1 _) _ _) (Id _ _ _ (SpecId _ mtys2 _) _ _)
- = panic# "Id.cmpEqDataCon:cmpUniTypeMaybeList mtys1 mtys2"
-
-cmpEqDataCon _ (Id _ _ _ (SpecId _ _ _) _ _) = LT_
-cmpEqDataCon (Id _ _ _ (SpecId _ _ _) _ _) _ = GT_
-cmpEqDataCon _ _ = EQ_
+ a <= b = case (a `compare` b) of { LT -> True; EQ -> True; GT -> False }
+ a < b = case (a `compare` b) of { LT -> True; EQ -> False; GT -> False }
+ a >= b = case (a `compare` b) of { LT -> False; EQ -> True; GT -> True }
+ a > b = case (a `compare` b) of { LT -> False; EQ -> False; GT -> True }
+ compare a b = cmpId a b
\end{code}
%************************************************************************
\begin{code}
instance Outputable ty => Outputable (GenId ty) where
- ppr sty id = pprId sty id
+ ppr id = pprId id
--- and a SPECIALIZEd one:
-instance Outputable {-Id, i.e.:-}(GenId Type) where
- ppr sty id = pprId sty id
-
-showId :: PprStyle -> Id -> String
-showId sty id = show (pprId sty id)
+showId :: Id -> String
+showId id = showSDoc (pprId id)
\end{code}
Default printing code (not used for interfaces):
\begin{code}
-pprId :: Outputable ty => PprStyle -> GenId ty -> Doc
+pprId :: Outputable ty => GenId ty -> SDoc
-pprId sty (Id u n _ _ prags _)
- = hcat [ppr sty n, pp_prags]
+pprId Id {idUnique = u, idName = n, idInfo = info}
+ = hcat [ppr n, pp_prags]
where
- pp_prags = ifPprDebug sty (case prags of
- IMustNotBeINLINEd -> text "{n}"
- IWantToBeINLINEd -> text "{i}"
- IMustBeINLINEd -> text "{I}"
- other -> empty)
-
- -- WDP 96/05/06: We can re-elaborate this as we go along...
+ pp_prags | opt_PprStyle_All = case inlinePragInfo info of
+ IMustNotBeINLINEd -> text "{n}"
+ IWantToBeINLINEd -> text "{i}"
+ IMustBeINLINEd -> text "{I}"
+ other -> empty
+ | otherwise = empty
\end{code}
\begin{code}
-idUnique (Id u _ _ _ _ _) = u
-
instance Uniquable (GenId ty) where
uniqueOf = idUnique
instance NamedThing (GenId ty) where
- getName this_id@(Id u n _ details _ _) = n
+ getName = idName
\end{code}
Note: The code generator doesn't carry a @UniqueSupply@, so it uses
isNullIdEnv :: IdEnv a -> Bool
lookupIdEnv :: IdEnv a -> GenId ty -> Maybe a
lookupNoFailIdEnv :: IdEnv a -> GenId ty -> a
+elemIdEnv :: Id -> IdEnv a -> Bool
\end{code}
\begin{code}
+elemIdEnv = elemUFM
addOneToIdEnv = addToUFM
combineIdEnvs = plusUFM_C
delManyFromIdEnv = delListFromUFM
nullIdEnv = emptyUFM
rngIdEnv = eltsUFM
unitIdEnv = unitUFM
+isNullIdEnv = isNullUFM
growIdEnvList env pairs = plusUFM env (listToUFM pairs)
-isNullIdEnv env = sizeUFM env == 0
lookupNoFailIdEnv env id = case (lookupIdEnv env id) of { Just xx -> xx }
+lookupIdSubst :: IdEnv Id -> Id -> Id
+lookupIdSubst env id = case lookupIdEnv env id of
+ Just id' -> id' -- Return original if
+ Nothing -> id -- it isn't in subst
+
-- modifyIdEnv: Look up a thing in the IdEnv, then mash it with the
-- modify function, and put it back.
isEmptyIdSet = isEmptyUniqSet
mkIdSet = mkUniqSet
\end{code}
-
-\begin{code}
-addId, nmbrId, nmbrDataCon :: Id -> NmbrM Id
-
-addId id@(Id u n ty det prag info) nenv@(NmbrEnv ui ut uu idenv tvenv uvenv)
- = case (lookupUFM_Directly idenv u) of
- Just xx -> trace "addId: already in map!" $
- (nenv, xx)
- Nothing ->
- if toplevelishId id then
- trace "addId: can't add toplevelish!" $
- (nenv, id)
- else -- alloc a new unique for this guy
- -- and add an entry in the idenv
- -- NB: *** KNOT-TYING ***
- let
- nenv_plus_id = NmbrEnv (incrUnique ui) ut uu
- (addToUFM_Directly idenv u new_id)
- tvenv uvenv
-
- (nenv2, new_ty) = nmbrType ty nenv_plus_id
- (nenv3, new_det) = nmbr_details det nenv2
-
- new_id = Id ui n new_ty new_det prag info
- in
- (nenv3, new_id)
-
-nmbrId id@(Id u n ty det prag info) nenv@(NmbrEnv ui ut uu idenv tvenv uvenv)
- = case (lookupUFM_Directly idenv u) of
- Just xx -> (nenv, xx)
- Nothing ->
- if not (toplevelishId id) then
- trace "nmbrId: lookup failed" $
- (nenv, id)
- else
- let
- (nenv2, new_ty) = nmbrType ty nenv
- (nenv3, new_det) = nmbr_details det nenv2
-
- new_id = Id u n new_ty new_det prag info
- in
- (nenv3, new_id)
-
- -- used when renumbering TyCons to produce data decls...
-nmbrDataCon id@(Id _ _ _ (TupleConId _) _ _) nenv
- = (nenv, id) -- nothing to do for tuples
-
-nmbrDataCon id@(Id u n ty (AlgConId tag marks fields tvs theta con_tvs con_theta arg_tys tc) prag info)
- nenv@(NmbrEnv ui ut uu idenv tvenv uvenv)
- = case (lookupUFM_Directly idenv u) of
- Just xx -> trace "nmbrDataCon: in env???\n" (nenv, xx)
- Nothing ->
- let
- (nenv2, new_fields) = (mapNmbr nmbrField fields) nenv
- (nenv3, new_arg_tys) = (mapNmbr nmbrType arg_tys) nenv2
-
- new_det = AlgConId tag marks new_fields (bottom "tvs") (bottom "theta") (bottom "tvs") (bottom "theta") new_arg_tys tc
- new_id = Id u n (bottom "ty") new_det prag info
- in
- (nenv3, new_id)
- where
- bottom msg = panic ("nmbrDataCon"++msg)
-
-------------
-nmbr_details :: IdDetails -> NmbrM IdDetails
-
-nmbr_details (AlgConId tag marks fields tvs theta con_tvs con_theta arg_tys tc)
- = mapNmbr nmbrTyVar tvs `thenNmbr` \ new_tvs ->
- mapNmbr nmbrTyVar con_tvs `thenNmbr` \ new_con_tvs ->
- mapNmbr nmbrField fields `thenNmbr` \ new_fields ->
- mapNmbr nmbr_theta theta `thenNmbr` \ new_theta ->
- mapNmbr nmbr_theta con_theta `thenNmbr` \ new_con_theta ->
- mapNmbr nmbrType arg_tys `thenNmbr` \ new_arg_tys ->
- returnNmbr (AlgConId tag marks new_fields new_tvs new_theta new_con_tvs new_con_theta new_arg_tys tc)
- where
- nmbr_theta (c,t)
- = --nmbrClass c `thenNmbr` \ new_c ->
- nmbrType t `thenNmbr` \ new_t ->
- returnNmbr (c, new_t)
-
- -- ToDo:add more cases as needed
-nmbr_details other_details = returnNmbr other_details
-
-------------
-nmbrField (FieldLabel n ty tag)
- = nmbrType ty `thenNmbr` \ new_ty ->
- returnNmbr (FieldLabel n new_ty tag)
-\end{code}
projects / ghc-hetmet.git / blobdiff