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-rw-r--r--haddock-api/src/Haddock/Backends/Hoogle.hs15
1 files changed, 9 insertions, 6 deletions
diff --git a/haddock-api/src/Haddock/Backends/Hoogle.hs b/haddock-api/src/Haddock/Backends/Hoogle.hs
index 71e7cbc4..f4f5be90 100644
--- a/haddock-api/src/Haddock/Backends/Hoogle.hs
+++ b/haddock-api/src/Haddock/Backends/Hoogle.hs
@@ -175,6 +175,12 @@ ppClass dflags decl subdocs = (out dflags decl' ++ " " ++ ppTyFams) : ppMethods
, map (ppr . tyFamEqnToSyn . unLoc) (tcdATDefs decl)
]
+ whereWrapper elems = vcat'
+ [ text "where" <+> lbrace
+ , nest 4 . vcat . map (<> semi) $ elems
+ , rbrace
+ ]
+
addContext (TypeSig name (L l sig) nwcs) = TypeSig name (L l $ f sig) nwcs
addContext (MinimalSig src sig) = MinimalSig src sig
addContext _ = error "expected TypeSig"
@@ -390,9 +396,6 @@ escape = concatMap f
f x = [x]
-semiSeparate :: [SDoc] -> SDoc
-semiSeparate = sep . punctuate semi
-
-
-whereWrapper :: [SDoc] -> SDoc
-whereWrapper xs = text "where" <+> braces (space <> semiSeparate xs <> space)
+-- | Just like 'vcat' but uses '($+$)' instead of '($$)'.
+vcat' :: [SDoc] -> SDoc
+vcat' = foldr ($+$) empty