From 42fc137f64aab9242aab9bdb2f5da0a6d892f09c Mon Sep 17 00:00:00 2001
From: Alexander Foremny <aforemny@posteo.de>
Date: Sat, 14 Oct 2023 14:56:42 +0200
Subject: fix UTCTime serialization
---
app/Issue.hs | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
(limited to 'app')
diff --git a/app/Issue.hs b/app/Issue.hs
index c9d18f8..256947b 100644
--- a/app/Issue.hs
+++ b/app/Issue.hs
@@ -3,17 +3,20 @@
{-# LANGUAGE DisambiguateRecordFields #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE OverloadedStrings #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
module Issue (Issue (..), Provenance (..), fromMatch, id) where
-import Data.Binary (Binary, get, put)
+import Data.Binary (Binary, Put, get, put)
import Data.ByteString.Lazy (toStrict)
+import Data.Fixed (Pico)
import Data.Function ((&))
import Data.List (find, foldl')
import Data.Text (Text)
import Data.Text qualified as T
import Data.Text.Encoding (decodeUtf8)
-import Data.Time.Clock (UTCTime)
+import Data.Time.Calendar (Day (..), toModifiedJulianDay)
+import Data.Time.Clock (DiffTime, UTCTime (..), picosecondsToDiffTime)
import GHC.Generics (Generic)
import Issue.Tag (Tag (..))
import Issue.Tag qualified as I
@@ -46,10 +49,21 @@ data Provenance = Provenance
}
deriving (Show, Generic, Binary)
+-- XXX These are taken from `Data.Binary.Orphans` [1]. I cannot get importing
+-- the instance from the package to work.. so we use `-fno-warn-orphans` here.
+--
+-- [1] https://hackage.haskell.org/package/binary-orphans-0.1.5.1/docs/src/Data-Binary-Orphans.html#line-132
instance Binary UTCTime where
- -- TODO Serialize UTCTime using POSIX time stamps
- put = put . show
- get = fmap read get
+ get = UTCTime <$> get <*> get
+ put (UTCTime d dt) = put d >> put dt
+
+instance Binary Day where
+ get = fmap ModifiedJulianDay get
+ put = put . toModifiedJulianDay
+
+instance Binary DiffTime where
+ get = fmap picosecondsToDiffTime get
+ put = (put :: Pico -> Put) . realToFrac
id :: Issue -> Maybe String
id issue =
--
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