From bd8a41c76ed405f06c09e2594bcec37e85d51e22 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Mon, 29 Dec 2014 16:32:59 -0500
Subject: [PATCH] Use Generics.to_tuple in TSN.XML.AutoRacingDriverList.

---
 src/TSN/XML/AutoRacingDriverList.hs | 30 ++++++++++++-----------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/src/TSN/XML/AutoRacingDriverList.hs b/src/TSN/XML/AutoRacingDriverList.hs
index 327c358..b1a611e 100644
--- a/src/TSN/XML/AutoRacingDriverList.hs
+++ b/src/TSN/XML/AutoRacingDriverList.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE QuasiQuotes #-}
@@ -36,6 +37,7 @@ import Database.Groundhog.Sqlite ( withSqliteConn )
 import Database.Groundhog.TH (
   groundhog,
   mkPersist )
+import qualified GHC.Generics as GHC ( Generic )
 import Test.Tasty ( TestTree, testGroup )
 import Test.Tasty.HUnit ( (@?=), testCase )
 import Text.XML.HXT.Core (
@@ -50,6 +52,7 @@ import Text.XML.HXT.Core (
   xpWrap )
 
 -- Local imports.
+import Generics ( Generic(..), to_tuple )
 import TSN.Codegen ( tsn_codegen_config )
 import TSN.DbImport ( DbImport(..), ImportResult(..), run_dbmigrate )
 import TSN.Picklers ( xp_date, xp_time_stamp )
@@ -101,7 +104,11 @@ data Message =
     xml_title :: String,
     xml_listings :: [AutoRacingDriverListListingXml],
     xml_time_stamp :: UTCTime }
-  deriving (Eq, Show)
+  deriving (Eq, GHC.Generic, Show)
+
+-- | For 'Generics.to_tuple'.
+--
+instance Generic Message
 
 
 instance ToDb Message where
@@ -165,8 +172,11 @@ data AutoRacingDriverListListingXml =
     xml_nationality :: Maybe String,
     xml_car_number :: Int,
     xml_car :: String }
-  deriving (Eq, Show)
+  deriving (Eq, GHC.Generic, Show)
 
+-- | For 'Generics.to_tuple'.
+--
+instance Generic AutoRacingDriverListListingXml
 
 instance ToDb AutoRacingDriverListListingXml where
   -- | The database analogue of an 'AutoRacingDriverListListingXml' is
@@ -272,15 +282,6 @@ pickle_listing =
              (xpElem "Car" xpText)
   where
     from_tuple = uncurryN AutoRacingDriverListListingXml
-    to_tuple m = (xml_driver_id m,
-                  xml_driver m,
-                  xml_height m,
-                  xml_weight m,
-                  xml_date_of_birth m,
-                  xml_hometown m,
-                  xml_nationality m,
-                  xml_car_number m,
-                  xml_car m)
 
 -- | Pickler for the top-level 'Message'.
 --
@@ -297,13 +298,6 @@ pickle_message =
              (xpElem "time_stamp" xp_time_stamp)
   where
     from_tuple = uncurryN Message
-    to_tuple m = (xml_xml_file_id m,
-                  xml_heading m,
-                  xml_category m,
-                  xml_sport m,
-                  xml_title m,
-                  xml_listings m,
-                  xml_time_stamp m)
 
 
 
-- 
2.43.2