[project @ 2006-01-18 12:15:37 by simonpj]

[ghc-hetmet.git] / ghc / compiler / prelude / PrelInfo.lhs

diff --git a/ghc/compiler/prelude/PrelInfo.lhs b/ghc/compiler/prelude/PrelInfo.lhs
index 0a532a1..31457b2 100644 (file)
--- a/ghc/compiler/prelude/PrelInfo.lhs
+++ b/ghc/compiler/prelude/PrelInfo.lhs
@@ -5,50 +5,41 @@
 
 \begin{code}
 module PrelInfo (
-       module PrelNames,
        module MkId,
 
-       wiredInNames,   -- Names of wired in things
-       wiredInThings,
-
+       ghcPrimExports,
+       wiredInThings, basicKnownKeyNames,
+       primOpId,
        
-       -- Primop RdrNames
-       eqH_Char_RDR,   ltH_Char_RDR,   eqH_Word_RDR,  ltH_Word_RDR, 
-       eqH_Addr_RDR,   ltH_Addr_RDR,   eqH_Float_RDR, ltH_Float_RDR, 
-       eqH_Double_RDR, ltH_Double_RDR, eqH_Int_RDR,   ltH_Int_RDR,
-       geH_RDR, leH_RDR, minusH_RDR, tagToEnumH_RDR, 
-
        -- Random other things
        maybeCharLikeCon, maybeIntLikeCon,
 
        -- Class categories
-       isCcallishClass, isCreturnableClass, isNoDictClass, 
        isNumericClass, isStandardClass
 
     ) where
 
 #include "HsVersions.h"
 
--- friends:
-import PrelNames       -- Prelude module names
+import PrelNames       ( basicKnownKeyNames, 
+                         hasKey, charDataConKey, intDataConKey,
+                         numericClassKeys, standardClassKeys )
 
-import PrimOp          ( PrimOp(..), allThePrimOps, primOpRdrName )
-import DataCon         ( DataCon, dataConId, dataConWrapId )
+import PrimOp          ( PrimOp, allThePrimOps, primOpOcc, primOpTag, maxPrimOpTag )
+import DataCon         ( DataCon )
+import Id              ( Id, idName )
 import MkId            ( mkPrimOpId, wiredInIds )
 import MkId            -- All of it, for re-export
+import Name            ( nameOccName )
 import TysPrim         ( primTyCons )
 import TysWiredIn      ( wiredInTyCons )
-import HscTypes                ( TyThing(..) )
-
--- others:
-import RdrName         ( RdrName )
-import Name            ( Name, getName )
-import TyCon           ( tyConDataConsIfAvailable, TyCon )
+import HscTypes        ( TyThing(..), implicitTyThings, GenAvailInfo(..), RdrAvailInfo )
 import Class           ( Class, classKey )
 import Type            ( funTyCon )
-import Bag
-import BasicTypes      ( Boxity(..) )
+import TyCon           ( tyConName )
 import Util            ( isIn )
+
+import Array           ( Array, array, (!) )
 \end{code}
 
 %************************************************************************
@@ -62,10 +53,11 @@ We have two ``builtin name funs,'' one to look up @TyCons@ and
 
 \begin{code}
 wiredInThings :: [TyThing]
-wiredInThings
+wiredInThings          
   = concat
-    [          -- Wired in TyCons
-         map ATyCon ([funTyCon] ++ primTyCons ++ wiredInTyCons)
+    [          -- Wired in TyCons and their implicit Ids
+         tycon_things
+       , concatMap implicitTyThings tycon_things
 
                -- Wired in Ids
        , map AnId wiredInIds
@@ -73,50 +65,47 @@ wiredInThings
                -- PrimOps
        , map (AnId . mkPrimOpId) allThePrimOps
     ]
-
-wiredInNames :: [Name]
-wiredInNames = [n | thing <- wiredInThings, n <- tyThingNames]
-
-tyThingNames :: TyCon -> [Name]
-tyThingNames (AnClass cl) = pprPanic "tyThingNames" (ppr cl)   -- Not used
-tyThingNames (AnId    id) = [getName id]
-tyThingNames (ATyCon  tc) = getName tycon : [ getName n | dc <- tyConDataConsIfAvailable tycon, 
-                                                         n  <- [dataConId dc, dataConWrapId dc] ]
-                                               -- Synonyms return empty list of constructors
+  where
+    tycon_things = map ATyCon ([funTyCon] ++ primTyCons ++ wiredInTyCons)
 \end{code}
 
 We let a lot of "non-standard" values be visible, so that we can make
 sense of them in interface pragmas. It's cool, though they all have
 "non-standard" names, so they won't get past the parser in user code.
 
+%************************************************************************
+%*                                                                     *
+               PrimOpIds
+%*                                                                     *
+%************************************************************************
+
+\begin{code}
+primOpIds :: Array Int Id      -- Indexed by PrimOp tag
+primOpIds = array (1,maxPrimOpTag) [ (primOpTag op, mkPrimOpId op) 
+                                  | op <- allThePrimOps]
+
+primOpId :: PrimOp -> Id
+primOpId op = primOpIds ! primOpTag op
+\end{code}
+
 
 %************************************************************************
 %*                                                                     *
-\subsection{RdrNames for the primops}
+\subsection{Export lists for pseudo-modules (GHC.Prim)}
 %*                                                                     *
 %************************************************************************
 
-These can't be in PrelNames, because we get the RdrName from the PrimOp,
-which is above PrelNames in the module hierarchy.
+GHC.Prim "exports" all the primops and primitive types, some 
+wired-in Ids.
 
 \begin{code}
-eqH_Char_RDR   = primOpRdrName CharEqOp
-ltH_Char_RDR   = primOpRdrName CharLtOp
-eqH_Word_RDR   = primOpRdrName WordEqOp
-ltH_Word_RDR   = primOpRdrName WordLtOp
-eqH_Addr_RDR   = primOpRdrName AddrEqOp
-ltH_Addr_RDR   = primOpRdrName AddrLtOp
-eqH_Float_RDR  = primOpRdrName FloatEqOp
-ltH_Float_RDR  = primOpRdrName FloatLtOp
-eqH_Double_RDR = primOpRdrName DoubleEqOp
-ltH_Double_RDR = primOpRdrName DoubleLtOp
-eqH_Int_RDR    = primOpRdrName IntEqOp
-ltH_Int_RDR    = primOpRdrName IntLtOp
-geH_RDR                = primOpRdrName IntGeOp
-leH_RDR                = primOpRdrName IntLeOp
-minusH_RDR     = primOpRdrName IntSubOp
-
-tagToEnumH_RDR = primOpRdrName TagToEnumOp
+ghcPrimExports :: [RdrAvailInfo]
+ghcPrimExports
+ = map (Avail . nameOccName . idName) ghcPrimIds ++
+   map (Avail . primOpOcc) allThePrimOps ++
+   [ AvailTC occ [occ] |
+     n <- funTyCon : primTyCons, let occ = nameOccName (tyConName n) 
+   ]
 \end{code}
 
 
@@ -142,13 +131,9 @@ maybeIntLikeCon  con = con `hasKey` intDataConKey
 %************************************************************************
 
 \begin{code}
-isCcallishClass, isCreturnableClass, isNoDictClass, 
-  isNumericClass, isStandardClass :: Class -> Bool
+isNumericClass, isStandardClass :: Class -> Bool
 
 isNumericClass     clas = classKey clas `is_elem` numericClassKeys
 isStandardClass    clas = classKey clas `is_elem` standardClassKeys
-isCcallishClass           clas = classKey clas `is_elem` cCallishClassKeys
-isCreturnableClass clas = classKey clas == cReturnableClassKey
-isNoDictClass      clas = classKey clas `is_elem` noDictClassKeys
 is_elem = isIn "is_X_Class"
 \end{code}