Let exprToVar give a useful error message.

[matthijs/master-project/cλash.git] / Pretty.hs

diff --git a/Pretty.hs b/Pretty.hs
index 43e0e49bf7aa6c2dc3ce6822bf47306d57136175..7896372f2d27dd01603664e4602dac15901dce70 100644 (file)
--- a/Pretty.hs
+++ b/Pretty.hs
@@ -1,4 +1,4 @@
-module Pretty (prettyShow) where
+module Pretty (prettyShow, pprString) where
 
 
 import qualified Data.Map as Map
@@ -76,8 +76,8 @@ instance Pretty SigDef where
 instance Pretty SignalExpr where
   pPrint (EqLit id lit) =
     parens $ pPrint id <> text " = " <> text lit
-  pPrint (Literal lit) =
-    text lit
+  pPrint (Literal lit ty) =
+    text "(" <> text (show ty) <> text ") " <> text lit
   pPrint (Eq a b) =
     parens $ pPrint a <> text " = " <> pPrint b
 
@@ -132,6 +132,9 @@ instance (OutputableBndr b, Show b) => Pretty (CoreSyn.Bind b) where
   pPrint (CoreSyn.Rec binds) =
     text "Rec: " $$ nest 10 (vcat $ map (prettyBind) binds)
 
+instance (OutputableBndr b, Show b) => Pretty (CoreSyn.Expr b) where
+  pPrint = text . show
+
 instance Pretty AST.VHDLId where
   pPrint id = ForSyDe.Backend.Ppr.ppr id
 
@@ -141,3 +144,14 @@ prettyBind (b, expr) =
   where
     b' = show b
     expr' = show expr
+
+instance (Pretty k, Pretty v) => Pretty (Map.Map k v) where
+  pPrint = 
+    vcat . map ppentry . Map.toList
+    where
+      ppentry (k, v) =
+        pPrint k <> text " : " $$ nest 15 (pPrint v)
+
+-- Convenience method for turning an Outputable into a string
+pprString :: (Outputable x) => x -> String
+pprString = showSDoc . ppr