Add a WARNING pragma

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

diff --git a/compiler/basicTypes/BasicTypes.lhs b/compiler/basicTypes/BasicTypes.lhs
index 9d5b481..f782da3 100644 (file)
--- a/compiler/basicTypes/BasicTypes.lhs
+++ b/compiler/basicTypes/BasicTypes.lhs
@@ -19,7 +19,7 @@ module BasicTypes(
 
        Arity, 
        
-       DeprecTxt,
+       WarningTxt(..),
 
        Fixity(..), FixityDirection(..),
        defaultFixity, maxPrecedence, 
@@ -95,7 +95,14 @@ initialVersion = 1
 
 
 \begin{code}
-type DeprecTxt = FastString    -- reason/explanation for deprecation
+-- reason/explanation from a WARNING or DEPRECATED pragma
+data WarningTxt = WarningTxt FastString
+                | DeprecatedTxt FastString
+    deriving Eq
+
+instance Outputable WarningTxt where
+    ppr (WarningTxt    w) =                        doubleQuotes (ftext w)
+    ppr (DeprecatedTxt d) = text "Deprecated:" <+> doubleQuotes (ftext d)
 \end{code}
 
 %************************************************************************