rebase to ghc main repo

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

diff --git a/compiler/prelude/TysWiredIn.lhs b/compiler/prelude/TysWiredIn.lhs
index db2ea1b..29fa628 100644 (file)
--- a/compiler/prelude/TysWiredIn.lhs
+++ b/compiler/prelude/TysWiredIn.lhs
@@ -47,6 +47,12 @@ module TysWiredIn (
         -- * Unit
        unitTy,
 
+        -- * Heterogeneous Metaprogramming
+       mkHetMetCodeTypeTy,
+        hetMetCodeTypeTyConName,
+       hetMetCodeTypeTyCon,     isHetMetCodeTypeTyCon,
+       hetMetCodeTypeTyCon_RDR,
+
         -- * Parallel arrays
        mkPArrTy,
        parrTyCon, parrFakeCon, isPArrTyCon, isPArrFakeCon,
@@ -124,6 +130,7 @@ wiredInTyCons = [ unitTyCon -- Not treated like other tuples, because
              , intTyCon
              , listTyCon
              , parrTyCon
+             , hetMetCodeTypeTyCon
               , unsafeCoercionTyCon
               , symCoercionTyCon
               , transCoercionTyCon
@@ -174,8 +181,14 @@ parrTyConName   = mkWiredInTyConName   BuiltInSyntax
 parrDataConName = mkWiredInDataConName UserSyntax    
                     gHC_PARR' (fsLit "PArr") parrDataConKey parrDataCon
 
+hetMetCodeTypeTyConName :: Name
+hetMetCodeTypeTyConName        = mkWiredInTyConName   BuiltInSyntax gHC_HETMET_CODETYPES (fsLit "<[]>@")      hetMetCodeTypeTyConKey   hetMetCodeTypeTyCon 
+hetMetCodeTypeDataConName :: Name
+hetMetCodeTypeDataConName      =
+    mkWiredInDataConName  BuiltInSyntax gHC_HETMET_CODETYPES (fsLit "<[]>")      hetMetCodeTypeDataConKey hetMetCodeTypeDataCon
+
 boolTyCon_RDR, false_RDR, true_RDR, intTyCon_RDR, charTyCon_RDR,
-    intDataCon_RDR, listTyCon_RDR, consDataCon_RDR, parrTyCon_RDR:: RdrName
+    intDataCon_RDR, listTyCon_RDR, consDataCon_RDR, parrTyCon_RDR, hetMetCodeTypeTyCon_RDR :: RdrName
 boolTyCon_RDR   = nameRdrName boolTyConName
 false_RDR      = nameRdrName falseDataConName
 true_RDR       = nameRdrName trueDataConName
@@ -185,6 +198,7 @@ intDataCon_RDR      = nameRdrName intDataConName
 listTyCon_RDR  = nameRdrName listTyConName
 consDataCon_RDR = nameRdrName consDataConName
 parrTyCon_RDR  = nameRdrName parrTyConName
+hetMetCodeTypeTyCon_RDR        = nameRdrName hetMetCodeTypeTyConName
 \end{code}
 
 
@@ -612,3 +626,26 @@ isPArrFakeCon dcon  = dcon == parrFakeCon (dataConSourceArity dcon)
 \end{code}
 
 
+Heterogeneous Metaprogramming
+
+\begin{code}
+-- | Construct a type representing the application of the box type
+mkHetMetCodeTypeTy    :: TyVar -> Type -> Type
+mkHetMetCodeTypeTy ecn ty = mkTyConApp hetMetCodeTypeTyCon [(mkTyVarTy ecn), ty]
+
+-- | Represents the type constructor of box types
+hetMetCodeTypeTyCon :: TyCon
+hetMetCodeTypeTyCon  = pcNonRecDataTyCon hetMetCodeTypeTyConName [alphaTyVar, betaTyVar] [hetMetCodeTypeDataCon]
+
+-- | Check whether a type constructor is the constructor for box types
+isHetMetCodeTypeTyCon    :: TyCon -> Bool
+isHetMetCodeTypeTyCon tc  = tyConName tc == hetMetCodeTypeTyConName
+
+hetMetCodeTypeDataCon :: DataCon
+hetMetCodeTypeDataCon  = pcDataCon 
+                hetMetCodeTypeDataConName 
+                [betaTyVar]            -- forall'ed type variables
+                [betaTy] 
+                hetMetCodeTypeTyCon
+
+\end{code}