X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fprelude%2FTysWiredIn.lhs;h=aaef16439b5cc8daaf25ff24d7ecb0d0ded11def;hp=f77b272b31743f9286ee00c24fcead582a80b095;hb=34c8d0312071f7d0f4d221a997d3408c653ef9e5;hpb=cb8fb4dc68b503474bd65c0a669d9018a3ce96fe

diff --git a/compiler/prelude/TysWiredIn.lhs b/compiler/prelude/TysWiredIn.lhs
index f77b272..aaef164 100644
--- 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
@@ -172,8 +179,14 @@ parrTyConName, parrDataConName :: Name
 parrTyConName	  = mkWiredInTyConName   BuiltInSyntax gHC_PARR (fsLit "[::]") parrTyConKey parrTyCon 
 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
@@ -183,6 +196,7 @@ intDataCon_RDR	= nameRdrName intDataConName
 listTyCon_RDR	= nameRdrName listTyConName
 consDataCon_RDR = nameRdrName consDataConName
 parrTyCon_RDR	= nameRdrName parrTyConName
+hetMetCodeTypeTyCon_RDR	= nameRdrName hetMetCodeTypeTyConName
 \end{code}
 
 
@@ -610,3 +624,26 @@ 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}