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


-- | ZoneInfo library.
--   
--   ZoneInfo library.
@package zoneinfo
@version 0.4


-- | Provides access to the Olson zone-info database, using an adapted
--   version of the Olson zone-info library.
module Data.Time.ZoneInfo
type Olson = ForeignPtr COlson
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 an <a>Olson</a> context 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.
newOlson :: Maybe String -> IO Olson

-- | 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>Olson</a> object must be
--   serialised across threads.
newOlsonZone :: Olson -> String -> IO OlsonZone

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