Make record declarations respect alignment

This commit introduces tests for aligned record declarations. It
utilizes docCols and introduces a new `ColSig` for for record
declarations.

src-literatetests/10-tests.blt

@@ -295,6 +295,47 @@ func = f
   f = id
 
 
+###############################################################################
+###############################################################################
+###############################################################################
+#group data type declarations
+###############################################################################
+###############################################################################
+###############################################################################
+
+#test single record
+data Foo = Bar { foo :: Baz }
+
+#test record multiple names
+data Foo = Bar { foo, bar :: Baz }
+
+#test record multiple types
+data Foo = Bar
+  { foo  :: Baz
+  , bars :: Bizzz
+  }
+
+#test record multiple types and names
+data Foo = Bar
+  { foo, biz :: Baz
+  , bar      :: Bizzz
+  }
+
+#test record multiple types deriving
+data Foo = Bar
+  { fooz :: Baz
+  , bar  :: Bizzz
+  }
+  deriving Show
+
+#test record multiple types deriving
+data Foo = Bar
+  { foo  :: Baz
+  , bars :: Bizzz
+  }
+  deriving (Show, Eq, Monad, Functor, Traversable, Foldable)
+
+
 ###############################################################################
 ###############################################################################
 ###############################################################################

src/Language/Haskell/Brittany/Internal/Backend.hs

@@ -434,6 +434,7 @@ alignColsLines bridocs = do -- colInfos `forM_` \colInfo -> do
           (BDCols ColBindStmt           _) -> True
           (BDCols ColDoLet              _) -> True
           (BDCols ColRecUpdate          _) -> False
+          (BDCols ColRecDecl            _) -> False
           (BDCols ColListComp           _) -> False
           (BDCols ColList               _) -> False
           (BDCols ColApp                _) -> True

src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs

@@ -173,7 +173,7 @@ createDetailsDoc consNameStr details = case details of
     [ docLit consNameStr
     , docSeparator
     , appSep $ docLit $ Text.pack "{"
-    , createNamesAndTypeDoc names t
+    , docSeq $ createNamesAndTypeDoc names t
     , docSeparator
     , docLit $ Text.pack "}"
     ]
@@ -181,14 +181,13 @@ createDetailsDoc consNameStr details = case details of
     docAddBaseY BrIndentRegular $ docPar
       (docLit consNameStr)
       (docLines
-        [ docSeq
-          [ docLit $ Text.pack "{ "
-          , let L _ (ConDeclField names t _) = fstField
+        [ docCols ColRecDecl
+          $ docLit (Text.pack "{ ")
+          : let L _ (ConDeclField names t _) = fstField
               in createNamesAndTypeDoc names t
-          ]
         , docLines
           $ (\(L _ (ConDeclField names t _)) ->
-              docSeq [docCommaSep, createNamesAndTypeDoc names t])
+              docCols ColRecDecl $ docCommaSep : createNamesAndTypeDoc names t)
           <$> fields
         , docLit $ Text.pack "}"
         ]
@@ -213,15 +212,19 @@ createForallDoc (Just (HsQTvs _ bs _)) = do
     ]
 
 createNamesAndTypeDoc
-  :: [GenLocated t (FieldOcc u)] -> Located (HsType RdrName) -> ToBriDocM BriDocNumbered
-createNamesAndTypeDoc names t = docSeq
+  :: [GenLocated t (FieldOcc u)] -> Located (HsType RdrName) -> [ToBriDocM BriDocNumbered]
+createNamesAndTypeDoc names t =
   [ docSeq
-    $   List.intersperse docCommaSep
-    $   names
-    <&> \(L _ (FieldOcc fieldName _)) ->
-          docLit =<< lrdrNameToTextAnn fieldName
-  , docSeparator
-  , docLit $ Text.pack "::"
-  , docSeparator
-  , layoutType t
+    [ docSeq
+      $   List.intersperse docCommaSep
+      $   names
+      <&> \(L _ (FieldOcc fieldName _)) ->
+            docLit =<< lrdrNameToTextAnn fieldName
+    , docSeparator
+    ]
+  , docSeq
+    [ docLit $ Text.pack "::"
+    , docSeparator
+    , layoutType t
+    ]
   ]

src/Language/Haskell/Brittany/Internal/Types.hs

@@ -172,6 +172,7 @@ data ColSig
   | ColBindStmt
   | ColDoLet -- the non-indented variant
   | ColRecUpdate -- used for both RecCon and RecUpd. TODO: refactor to reflect?
+  | ColRecDecl
   | ColListComp
   | ColList
   | ColApp