[project @ 2000-05-25 12:41:14 by simonpj]

[ghc-hetmet.git] / ghc / compiler / basicTypes / BasicTypes.lhs

diff --git a/ghc/compiler/basicTypes/BasicTypes.lhs b/ghc/compiler/basicTypes/BasicTypes.lhs
index 5ddc452..14c9893 100644 (file)
--- a/ghc/compiler/basicTypes/BasicTypes.lhs
+++ b/ghc/compiler/basicTypes/BasicTypes.lhs
@@ -14,7 +14,7 @@ types that
 
 \begin{code}
 module BasicTypes(
-       Version,
+       Version, bumpVersion, initialVersion, bogusVersion,
 
        Arity, 
 
@@ -29,7 +29,10 @@ module BasicTypes(
 
        TopLevelFlag(..), isTopLevel, isNotTopLevel,
 
+       Boxity(..), isBoxed, tupleParens,
+
        OccInfo(..), seqOccInfo, isFragileOccInfo, isLoopBreaker,
+
        InsideLam, insideLam, notInsideLam,
        OneBranch, oneBranch, notOneBranch
 
@@ -75,6 +78,15 @@ type Arity = Int
 
 \begin{code}
 type Version = Int
+
+bogusVersion :: Version        -- Shouldn't look at these
+bogusVersion = error "bogusVersion"
+
+bumpVersion :: Version -> Version 
+bumpVersion v = v+1
+
+initialVersion :: Version
+initialVersion = 1
 \end{code}
 
 
@@ -146,6 +158,28 @@ isTopLevel NotTopLevel  = False
 
 %************************************************************************
 %*                                                                     *
+\subsection[Top-level/local]{Top-level/not-top level flag}
+%*                                                                     *
+%************************************************************************
+
+\begin{code}
+data Boxity
+  = Boxed
+  | Unboxed
+  deriving( Eq )
+
+isBoxed :: Boxity -> Bool
+isBoxed Boxed   = True
+isBoxed Unboxed = False
+
+tupleParens :: Boxity -> SDoc -> SDoc
+tupleParens Boxed   p = parens p
+tupleParens Unboxed p = ptext SLIT("(#") <+> p <+> ptext SLIT("#)")
+\end{code}
+
+
+%************************************************************************
+%*                                                                     *
 \subsection[Recursive/Non-Recursive]{Recursive/Non-Recursive flag}
 %*                                                                     *
 %************************************************************************