ghcup-hs/lib/GHCup/Version.hs
2023-10-21 19:23:25 +08:00

80 lines
2.7 KiB
Haskell

{-# LANGUAGE QuasiQuotes #-}
{-|
Module : GHCup.Version
Description : Version information and version handling.
Copyright : (c) Julian Ospald, 2020
License : LGPL-3.0
Maintainer : hasufell@hasufell.de
Stability : experimental
Portability : portable
-}
module GHCup.Version where
import GHCup.Types
import Paths_ghcup (version)
import Data.Version (Version(versionBranch))
import URI.ByteString
import URI.ByteString.QQ
import qualified Data.List.NonEmpty as NE
import qualified Data.Text as T
import qualified Data.Versions as V
import Control.Exception.Safe (MonadThrow)
import Data.Text (Text)
import Control.Monad.Catch (throwM)
import GHCup.Errors (ParseError(..))
import Text.Megaparsec
import Data.Void (Void)
-- | This reflects the API version of the YAML.
--
-- Note that when updating this, CI requires that the file exsists AND the same file exists at
-- 'https://www.haskell.org/ghcup/exp/ghcup-<ver>.yaml' with some newlines added.
ghcupURL :: URI
ghcupURL = [uri|https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-0.0.8.yaml|]
-- | The current ghcup version.
ghcUpVer :: V.PVP
ghcUpVer = V.PVP . NE.fromList . fmap fromIntegral $ versionBranch version
-- | ghcup version as numeric string.
numericVer :: String
numericVer = T.unpack . V.prettyPVP $ ghcUpVer
versionCmp :: V.Versioning -> VersionCmp -> Bool
versionCmp ver1 (VR_gt ver2) = ver1 > ver2
versionCmp ver1 (VR_gteq ver2) = ver1 >= ver2
versionCmp ver1 (VR_lt ver2) = ver1 < ver2
versionCmp ver1 (VR_lteq ver2) = ver1 <= ver2
versionCmp ver1 (VR_eq ver2) = ver1 == ver2
versionRange :: V.Versioning -> VersionRange -> Bool
versionRange ver' (SimpleRange cmps) = all (versionCmp ver') cmps
versionRange ver' (OrRange cmps range) =
versionRange ver' (SimpleRange cmps) || versionRange ver' range
pvpToVersion :: MonadThrow m => V.PVP -> Text -> m V.Version
pvpToVersion pvp_ rest =
either (\_ -> throwM $ ParseError "Couldn't convert PVP to Version") pure . V.version . (<> rest) . V.prettyPVP $ pvp_
-- | Convert a version to a PVP and unparsable rest.
--
-- -- prop> \v -> let (Just (pvp', r)) = versionToPVP v in pvpToVersion pvp' r === Just v
versionToPVP :: MonadThrow m => V.Version -> m (V.PVP, Text)
versionToPVP (V.Version (Just _) _ _ _) = throwM $ ParseError "Unexpected epoch"
versionToPVP v = case parse pvp'' "Version->PVP" $ V.prettyVer v of
Left _ -> throwM $ ParseError "Couldn't convert Version to PVP"
Right r -> pure r
where
pvp'' :: Parsec Void T.Text (V.PVP, T.Text)
pvp'' = do
p <- V.pvp'
s <- getParserState
pure (p, stateInput s)
pvpFromList :: [Int] -> V.PVP
pvpFromList = V.PVP . NE.fromList . fmap fromIntegral