-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | ZoneInfo library.
--   
--   ZoneInfo library.
@package zoneinfo
@version 0.5


-- | Provides access to the Olson zone-info database, using an adapted
--   version
module Data.Time.ZoneInfo

-- | Library context.
type Context = ForeignPtr CContext
class ZoneInfo a
zoneInfoName :: (ZoneInfo a) => a -> Bool -> IO (String)
zoneInfoMinutes :: (ZoneInfo a) => a -> Bool -> IO Int
posixToZonedTime :: (ZoneInfo a) => a -> POSIXTime -> IO ZonedTime
utcToZonedTime' :: (ZoneInfo a) => a -> UTCTime -> IO ZonedTime
localToPOSIXZoned :: (ZoneInfo a) => a -> LocalTime -> IO (POSIXTime, TimeZone)
localToUTCZoned :: (ZoneInfo a) => a -> LocalTime -> IO (UTCTime, TimeZone)
convertTimeZone :: (ZoneInfo a, ZoneInfo b) => a -> LocalTime -> b -> IO ZonedTime

-- | Create a <a>Context</a> object. A path to the zone-info database may
--   be specified. Otherwise, the TZDIR environment variable, or a
--   reasonable default, will be used. An <a>IOError</a> will be thrown on
--   failure.
newContext :: Maybe String -> IO Context

-- | Obtain an <a>OlsonZone</a> object based on the specified Olson
--   identifier or time-zone. If the zone-info database cannot be found, or
--   the time-zone not recognised, then an <a>IOError</a> will be thrown.
--   Calls to this function for a given <a>Context</a> must be serialised
--   across threads.
newOlsonZone :: Context -> String -> IO OlsonZone

-- | <a>OlsonZone</a> for the UTC time-zone.
utcOlsonZone :: Context -> OlsonZone
instance ZoneInfo TimeZone
instance ZoneInfo OlsonZone