Add an (Outputable Word16) instance

[ghc-hetmet.git] / compiler / utils / Outputable.lhs

diff --git a/compiler/utils/Outputable.lhs b/compiler/utils/Outputable.lhs
index 023d7d0..fc5a87e 100644 (file)
--- a/compiler/utils/Outputable.lhs
+++ b/compiler/utils/Outputable.lhs
@@ -37,13 +37,13 @@ module Outputable (
        printForC, printForAsm, printForUser, printForUserPartWay,
        pprCode, mkCodeStyle,
        showSDoc, showSDocOneLine,
-    showSDocForUser, showSDocDebug, showSDocDump, showSDocDumpOneLine,
-    showPpr,
+        showSDocForUser, showSDocDebug, showSDocDump, showSDocDumpOneLine,
+        showPpr,
        showSDocUnqual, showsPrecSDoc,
 
        pprInfixVar, pprPrefixVar,
        pprHsChar, pprHsString, pprHsInfix, pprHsVar,
-    pprFastFilePath,
+        pprFastFilePath,
 
         -- * Controlling the style in which output is printed
        BindingSite(..),
@@ -71,12 +71,11 @@ import FastString
 import FastTypes
 import qualified Pretty
 import Pretty          ( Doc, Mode(..) )
-import Char            ( isAlpha )
 import Panic
 
-import Data.Word       ( Word32 )
+import Data.Char
+import Data.Word
 import System.IO       ( Handle, stderr, stdout, hFlush )
-import Data.Char        ( ord )
 import System.FilePath
 \end{code}
 
@@ -129,6 +128,7 @@ data Depth = AllTheWay
 -- in source code, names are qualified by ModuleNames.
 type QueryQualifyName = Module -> OccName -> QualifyName
 
+-- See Note [Printing original names] in HscTypes
 data QualifyName                        -- given P:M.T
         = NameUnqual                    -- refer to it as "T"
         | NameQual ModuleName           -- refer to it as "X.T" for the supplied X
@@ -228,9 +228,9 @@ pprDeeperList f ds (PprUser q (PartWay n))
 pprDeeperList f ds other_sty
   = f ds other_sty
 
-pprSetDepth :: Int -> SDoc -> SDoc
-pprSetDepth  n d (PprUser q _) = d (PprUser q (PartWay n))
-pprSetDepth _n d other_sty     = d other_sty
+pprSetDepth :: Depth -> SDoc -> SDoc
+pprSetDepth depth  doc (PprUser q _) = doc (PprUser q depth)
+pprSetDepth _depth doc other_sty     = doc other_sty
 
 getPprStyle :: (PprStyle -> SDoc) -> SDoc
 getPprStyle df sty = df sty sty
@@ -495,6 +495,9 @@ instance Outputable Bool where
 instance Outputable Int where
    ppr n = int n
 
+instance Outputable Word16 where
+   ppr n = integer $ fromIntegral n
+
 instance Outputable Word32 where
    ppr n = integer $ fromIntegral n