Fix Trac #2310: result type signatures are not supported any more

[ghc-hetmet.git] / compiler / hsSyn / HsExpr.lhs

diff --git a/compiler/hsSyn/HsExpr.lhs b/compiler/hsSyn/HsExpr.lhs
index cef711f..78508c8 100644 (file)
--- a/compiler/hsSyn/HsExpr.lhs
+++ b/compiler/hsSyn/HsExpr.lhs
@@ -491,6 +491,9 @@ pprCmdArg (HsCmdTop cmd@(L _ (HsArrForm _ Nothing [])) _ _ _)
 pprCmdArg (HsCmdTop cmd _ _ _)
   = parens (ppr_lexpr cmd)
 
 pprCmdArg (HsCmdTop cmd _ _ _)
   = parens (ppr_lexpr cmd)
 

+instance OutputableBndr id => Outputable (HsCmdTop id) where
+    ppr = pprCmdArg
+

 -- Put a var in backquotes if it's not an operator already
 pprInfix :: Outputable name => name -> SDoc
 pprInfix v | isOperator ppr_v = ppr_v
 -- Put a var in backquotes if it's not an operator already
 pprInfix :: Outputable name => name -> SDoc
 pprInfix v | isOperator ppr_v = ppr_v

@@ -1113,3 +1116,15 @@ matchContextErrString (StmtCtxt (MDoExpr _))     = "'mdo' expression"
 matchContextErrString (StmtCtxt ListComp)        = "list comprehension"
 matchContextErrString (StmtCtxt PArrComp)        = "array comprehension"
 \end{code}
 matchContextErrString (StmtCtxt ListComp)        = "list comprehension"
 matchContextErrString (StmtCtxt PArrComp)        = "array comprehension"
 \end{code}

+
+\begin{code}
+pprMatchInCtxt :: (OutputableBndr idL, OutputableBndr idR)
+              => HsMatchContext idL -> Match idR -> SDoc
+pprMatchInCtxt ctxt match  = hang (ptext (sLit "In") <+> pprMatchContext ctxt <> colon) 
+                            4 (pprMatch ctxt match)
+
+pprStmtInCtxt :: (OutputableBndr idL, OutputableBndr idR)
+              => HsStmtContext idL -> StmtLR idL idR -> SDoc
+pprStmtInCtxt ctxt stmt = hang (ptext (sLit "In a stmt of") <+> pprStmtContext ctxt <> colon)
+                         4 (ppr stmt)
+\end{code}