X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FcoreSyn%2FPprExternalCore.lhs;h=5303b0d1b68ffed31265e510bf9547e3c116a907;hb=5c0a4132eb1fe60daa69a1d23c1de0715c8fdab0;hp=e33c7a018eb449eac67955882fcd03333001a376;hpb=1e50fd4185479a62e02d987bdfcb1c62712859ca;p=ghc-hetmet.git

diff --git a/compiler/coreSyn/PprExternalCore.lhs b/compiler/coreSyn/PprExternalCore.lhs
index e33c7a0..5303b0d 100644
--- a/compiler/coreSyn/PprExternalCore.lhs
+++ b/compiler/coreSyn/PprExternalCore.lhs
@@ -10,6 +10,7 @@ import ExternalCore
 
 import Pretty
 import Data.Char
+import Data.Ratio
 
 instance Show Module where
   showsPrec _ m = shows (pmodule m)
@@ -105,10 +106,8 @@ pty (SymCoercion t) =
   sep [text "%sym", paty t]
 pty (UnsafeCoercion t1 t2) =
   sep [text "%unsafe", paty t1, paty t2]
-pty (LeftCoercion t) =
-  sep [text "%left", paty t]
-pty (RightCoercion t) =
-  sep [text "%right", paty t]
+pty (NthCoercion n t) =
+  sep [text "%nth", int n, paty t]
 pty (InstCoercion t1 t2) =
   sep [text "%inst", paty t1, paty t2]
 pty t = pbty t
@@ -188,9 +187,12 @@ palt (Adefault e) =
 
 plit :: Lit -> Doc
 plit (Lint i t) = parens (integer i <> text "::" <> pty t)
--- we use (text (show r)) because "(rational r)" was printing out things
--- like "2.0e-2" (which isn't External Core)
-plit (Lrational r t) = parens (text (show r) <>  text "::" <> pty t)
+-- we use (text (show (numerator r))) (and the same for denominator)
+-- because "(rational r)" was printing out things like "2.0e-2" (which
+-- isn't External Core), and (text (show r)) was printing out things
+-- like "((-1)/5)" which isn't either (it should be "(-1/5)").
+plit (Lrational r t) = parens (text (show (numerator r)) <+> char '%'
+   <+> text (show (denominator r)) <>  text "::" <> pty t)
 plit (Lchar c t) = parens (text ("\'" ++ escape [c] ++ "\'") <> text "::" <> pty t)
 plit (Lstring s t) = parens (pstring s <> text "::" <> pty t)