import Data.Typeable ( Typeable )
#endif
-import Data.List ( intersperse )
+import Data.List ( intersperse, sort )
import Control.Monad ( liftM )
import Data.Char ( isDigit, isAlphaNum )
etc.). This is expected to be sufficient for many uses, but note that
you may need to use a more specific ordering for your versioning
scheme. For example, some versioning schemes may include pre-releases
-which have tags @"pre1"@, @"pre2"@, and so on, and these would need to
+which have tags @\"pre1\"@, @\"pre2\"@, and so on, and these would need to
be taken into account when determining ordering. In some cases, date
ordering may be more appropriate, so the application would have to
look for @date@ tags in the 'versionTags' field and compare those.
instance Eq Version where
v1 == v2 = versionBranch v1 == versionBranch v2
- && all (`elem` (versionTags v2)) (versionTags v1)
- -- tags may be in any order
+ && sort (versionTags v1) == sort (versionTags v2)
+ -- tags may be in any order
instance Ord Version where
v1 `compare` v2 = versionBranch v1 `compare` versionBranch v2
-- | Provides one possible concrete representation for 'Version'. For
-- a version with 'versionBranch' @= [1,2,3]@ and 'versionTags'
--- @= ["tag1","tag2"]@, the output will be @1.2.3-tag1-tag2@.
+-- @= [\"tag1\",\"tag2\"]@, the output will be @1.2.3-tag1-tag2@.
--
showVersion :: Version -> String
showVersion (Version branch tags)
-- | A parser for versions in the format produced by 'showVersion'.
--
-#if __GLASGOW_HASKELL__ <= 602 && !__HUGS__ && !__NHC__
-parseVersion :: ReadP r Version
+#if __GLASGOW_HASKELL__ >= 603 || __HUGS__
+parseVersion :: ReadP Version
#elif __NHC__
parseVersion :: ReadPN r Version
#else
-parseVersion :: ReadP Version
+parseVersion :: ReadP r Version
#endif
parseVersion = do branch <- sepBy1 (liftM read $ munch1 isDigit) (char '.')
tags <- many (char '-' >> munch1 isAlphaNum)